dihydrotestosterone

Summary

Summary: A potent androgenic metabolite of TESTOSTERONE. Dihydrotestosterone (DHT) is generated by a 5-alpha reduction of testosterone. Unlike testosterone, DHT cannot be aromatized to ESTRADIOL therefore DHT is considered a pure androgenic steroid.

Top Publications

  1. ncbi Testosterone and dihydrotestosterone tissue levels in recurrent prostate cancer
    Mark A Titus
    Department of Pathology, UNC Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, 27599 7295, USA
    Clin Cancer Res 11:4653-7. 2005
  2. ncbi The androgen axis in recurrent prostate cancer
    James L Mohler
    Department of Surgery, Division of Urology, Pathology and Laboratory Medicine, University of North Carolina Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, USA
    Clin Cancer Res 10:440-8. 2004
  3. ncbi A mechanism for androgen receptor-mediated prostate cancer recurrence after androgen deprivation therapy
    C W Gregory
    Laboratory for Reproductive Biology, Department of Pediatrics, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA
    Cancer Res 61:4315-9. 2001
  4. ncbi Reference ranges and determinants of testosterone, dihydrotestosterone, and estradiol levels measured using liquid chromatography-tandem mass spectrometry in a population-based cohort of older men
    Bu B Yeap
    School of Medicine and Pharmacology, Level 2, T Block, Fremantle Hospital, Alma Street, Fremantle, Western Australia 6160, Australia
    J Clin Endocrinol Metab 97:4030-9. 2012
  5. ncbi Serum testosterone, dihydrotestosterone and estradiol concentrations in older men self-reporting very good health: the healthy man study
    Gideon Sartorius
    Andrology Department, Concord Hospital, Clayton, Vic, Australia
    Clin Endocrinol (Oxf) 77:755-63. 2012
  6. pmc Activation of the androgen receptor by intratumoral bioconversion of androstanediol to dihydrotestosterone in prostate cancer
    James L Mohler
    Department of Urology, Roswell Park Cancer Institute, Buffalo, New York, USA
    Cancer Res 71:1486-96. 2011
  7. pmc Dihydrotestosterone synthesis bypasses testosterone to drive castration-resistant prostate cancer
    Kai Hsiung Chang
    Division of Hematology and Oncology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390 8852, USA
    Proc Natl Acad Sci U S A 108:13728-33. 2011
  8. pmc Developmental time course of estradiol, testosterone, and dihydrotestosterone levels in discrete regions of male and female rat brain
    Anne T M Konkle
    Faculty of Health Sciences, Interdisciplinary School of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
    Endocrinology 152:223-35. 2011
  9. pmc Mild exercise increases dihydrotestosterone in hippocampus providing evidence for androgenic mediation of neurogenesis
    Masahiro Okamoto
    Laboratory of Exercise Biochemistry and Neuroendocrinology, Faculty of Health and Sports Sciences, University of Tsukuba, Tsukuba, Ibaraki 305 8574, Japan
    Proc Natl Acad Sci U S A 109:13100-5. 2012
  10. pmc Dihydrotestosterone stimulates amino acid uptake and the expression of LAT2 in mouse skeletal muscle fibres through an ERK1/2-dependent mechanism
    M M Hamdi
    Biomedical and Clinical Sciences Research Institute, School of Medicine, Health Policy and Practice, University of East Anglia, Norwich NR4 7TJ, UK
    J Physiol 589:3623-40. 2011

Detail Information

Publications284 found, 100 shown here

  1. ncbi Testosterone and dihydrotestosterone tissue levels in recurrent prostate cancer
    Mark A Titus
    Department of Pathology, UNC Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, 27599 7295, USA
    Clin Cancer Res 11:4653-7. 2005
    ..Many groups have pursued mechanisms of ligand-independent androgen receptor activation but we found high levels of testicular androgens in recurrent prostate cancer tissue using RIA...
  2. ncbi The androgen axis in recurrent prostate cancer
    James L Mohler
    Department of Surgery, Division of Urology, Pathology and Laboratory Medicine, University of North Carolina Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, USA
    Clin Cancer Res 10:440-8. 2004
    ..High levels of expression of androgen receptor and androgen receptor-regulated genes in recurrent prostate cancer suggest a role for androgen receptor and its ligands in prostate cancer recurrence...
  3. ncbi A mechanism for androgen receptor-mediated prostate cancer recurrence after androgen deprivation therapy
    C W Gregory
    Laboratory for Reproductive Biology, Department of Pediatrics, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA
    Cancer Res 61:4315-9. 2001
    ..development and growth of prostate cancer depends on the androgen receptor and its high-affinity binding of dihydrotestosterone, which derives from testosterone...
  4. ncbi Reference ranges and determinants of testosterone, dihydrotestosterone, and estradiol levels measured using liquid chromatography-tandem mass spectrometry in a population-based cohort of older men
    Bu B Yeap
    School of Medicine and Pharmacology, Level 2, T Block, Fremantle Hospital, Alma Street, Fremantle, Western Australia 6160, Australia
    J Clin Endocrinol Metab 97:4030-9. 2012
    Testosterone (T) levels decline with increasing age. Controversy exists over the threshold for classifying T as low vs. normal in older men. The relevance of assessing dihydrotestosterone (DHT) and estradiol (E2) remains unclear.
  5. ncbi Serum testosterone, dihydrotestosterone and estradiol concentrations in older men self-reporting very good health: the healthy man study
    Gideon Sartorius
    Andrology Department, Concord Hospital, Clayton, Vic, Australia
    Clin Endocrinol (Oxf) 77:755-63. 2012
    To determine serum concentrations, intra-individual variability and impact of age-related co-morbidities on serum testosterone (T), dihydrotestosterone (DHT), estradiol (E(2)) and estrone (E(1)) in older men.
  6. pmc Activation of the androgen receptor by intratumoral bioconversion of androstanediol to dihydrotestosterone in prostate cancer
    James L Mohler
    Department of Urology, Roswell Park Cancer Institute, Buffalo, New York, USA
    Cancer Res 71:1486-96. 2011
    The androgen receptor (AR) mediates the growth of benign and malignant prostate in response to dihydrotestosterone (DHT)...
  7. pmc Dihydrotestosterone synthesis bypasses testosterone to drive castration-resistant prostate cancer
    Kai Hsiung Chang
    Division of Hematology and Oncology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390 8852, USA
    Proc Natl Acad Sci U S A 108:13728-33. 2011
    ..The development of CRPC is dependent upon the intratumoral generation of the potent androgen, dihydrotestosterone (DHT), from adrenal precursor steroids...
  8. pmc Developmental time course of estradiol, testosterone, and dihydrotestosterone levels in discrete regions of male and female rat brain
    Anne T M Konkle
    Faculty of Health Sciences, Interdisciplinary School of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5
    Endocrinology 152:223-35. 2011
    ..profile of steroids in the rat brain using RIA to quantify the level of estradiol, testosterone, and dihydrotestosterone in discrete subregions of the brain from embryonic d 19 to adulthood...
  9. pmc Mild exercise increases dihydrotestosterone in hippocampus providing evidence for androgenic mediation of neurogenesis
    Masahiro Okamoto
    Laboratory of Exercise Biochemistry and Neuroendocrinology, Faculty of Health and Sports Sciences, University of Tsukuba, Tsukuba, Ibaraki 305 8574, Japan
    Proc Natl Acad Sci U S A 109:13100-5. 2012
    ..A mass-spectrometric analysis demonstrated that hippocampal dihydrotestosterone increased significantly, whereas testosterone levels did not increase significantly after 2 wk of treadmill ..
  10. pmc Dihydrotestosterone stimulates amino acid uptake and the expression of LAT2 in mouse skeletal muscle fibres through an ERK1/2-dependent mechanism
    M M Hamdi
    Biomedical and Clinical Sciences Research Institute, School of Medicine, Health Policy and Practice, University of East Anglia, Norwich NR4 7TJ, UK
    J Physiol 589:3623-40. 2011
    b>Dihydrotestosterone (DHT) has acute/non-genomic actions in adult mammalian skeletal muscles whose physiological functions are still poorly understood...
  11. ncbi A new rat model exhibiting both ovarian and metabolic characteristics of polycystic ovary syndrome
    Louise Mannerås
    Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, Goteborg University, Box 434, SE 405 30 Goteborg, Sweden
    Endocrinology 148:3781-91. 2007
    ..Female rats received the nonaromatizable androgen dihydrotestosterone (DHT) or the aromatase inhibitor letrozole by continuous administration, beginning before puberty, to ..
  12. ncbi Acupuncture and exercise restore adipose tissue expression of sympathetic markers and improve ovarian morphology in rats with dihydrotestosterone-induced PCOS
    Louise Mannerås
    Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Goteborg, Sweden
    Am J Physiol Regul Integr Comp Physiol 296:R1124-31. 2009
    ..expression of sympathetic markers in adipose tissue and on ovarian morphology in female rats that received dihydrotestosterone (DHT) continuously, starting before puberty, to induce PCOS...
  13. ncbi Human type 3 3alpha-hydroxysteroid dehydrogenase (aldo-keto reductase 1C2) and androgen metabolism in prostate cells
    Tea Lanisnik Rizner
    Department of Pharmacology, University of Pennsylvania School of Medicine, 3620 Hamilton Walk, Philadelphia, PA 19104 6084, USA
    Endocrinology 144:2922-32. 2003
    ..adenine dinucleotide (NAD(+))-dependent oxidation of 3alpha-androstanediol (3alpha-diol) to 5alpha-dihydrotestosterone (5alpha-DHT)...
  14. pmc Dihydrotestosterone activates the MAPK pathway and modulates maximum isometric force through the EGF receptor in isolated intact mouse skeletal muscle fibres
    M M Hamdi
    Biomedical and Clinical Sciences Research Institute, School of Medicine, Health Policy and Practice, University of East Anglia, Norwich NR4 7TJ, UK
    J Physiol 588:511-25. 2010
    ..Therefore, the primary aim of this study was to investigate the non-genomic actions of dihydrotestosterone (DHT) and their physiological role in isolated intact mammalian skeletal muscle fibre bundles...
  15. ncbi Low-frequency electro-acupuncture and physical exercise improve metabolic disturbances and modulate gene expression in adipose tissue in rats with dihydrotestosterone-induced polycystic ovary syndrome
    Louise Mannerås
    Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
    Endocrinology 149:3559-68. 2008
    ..b>Dihydrotestosterone (inducing PCOS) or vehicle (control) was administrated continuously, beginning before puberty...
  16. pmc Membrane androgen receptors may mediate androgen reinforcement
    Satoru M Sato
    Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
    Psychoneuroendocrinology 35:1063-73. 2010
    ..Tfm males and wild-type (WT) littermates self-administered the non-aromatizable androgen dihydrotestosterone (DHT) or vehicle intracerebroventricularly (ICV) at fixed-ratio (FR) schedules up to FR5...
  17. ncbi Androgens induce increases in intracellular calcium via a G protein-coupled receptor in LNCaP prostate cancer cells
    Ying Hao Sun
    Department of Urology, Changhai Hospital, 174 Changhai Road, Shanghai 200433, China
    J Androl 27:671-8. 2006
    ..5alpha-dihydrotestosterone (DHT) produced fast and transient increases in intracellular Ca2+ in LNCaP cells in a concentration-..
  18. ncbi Dihydrotestosterone inhibits murine hair growth via the androgen receptor
    A Naito
    Biological Science Research Laboratories, Research and Development Headquarters, Lion Corporation, 100 Tajima, Odawara, Kanagawa 256 0811, Japan
    Br J Dermatol 159:300-5. 2008
    ..Although many investigators have elucidated the effect of androgens on hair growth by using rodents and other animals, some of the evidence is conflicting...
  19. pmc An alternate pathway for androgen regulation of brain function: activation of estrogen receptor beta by the metabolite of dihydrotestosterone, 5alpha-androstane-3beta,17beta-diol
    Robert J Handa
    Department of Biomedical Sciences Neurosciences Division, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA
    Horm Behav 53:741-52. 2008
    ..The goal of this review is to highlight recent data delineating the specific brain targets for the dihydrotestosterone metabolite, 5alpha-androstane, 3beta,17beta-diol (3beta-Diol)...
  20. ncbi Rapid membrane responses to dihydrotestosterone are sex dependent in growth plate chondrocytes
    Khairat Elbaradie
    Wallace H Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States
    J Steroid Biochem Mol Biol 132:15-23. 2012
    ..female rat growth plate chondrocytes convert testosterone to 17β-estradiol, male chondrocytes produce 5α-dihydrotestosterone (DHT)...
  21. ncbi Activation of PKR/eIF2α signaling cascade is associated with dihydrotestosterone-induced cell cycle arrest and apoptosis in human liver cells
    Rongyang Dai
    Department of Biochemistry of Luzhou Medical College, Luzhou, Sichuan, China
    J Cell Biochem 113:1800-8. 2012
    ..b>Dihydrotestosterone (DHT) is the active metabolite of the major circulating androgen, testosterone...
  22. ncbi The effect of dihydrotestosterone exposure during or prior to the masculinization programming window on reproductive development in male and female rats
    A Dean
    MRC Centre for Reproductive Health, University of Edinburgh, The Queen s Medical Research Institute, Edinburgh, UK
    Int J Androl 35:330-9. 2012
    ..masculinization could be advanced or enhanced by treating pregnant rats with either 1 or 10 mg/kg/day dihydrotestosterone (DHT) prior to (early window, EW; e11.5-e14.5) or during the MPW (e15.5-e18...
  23. ncbi Effect of dihydrotestosterone on hydrogen peroxide-induced apoptosis of mouse embryonic stem cells
    Sang Hun Lee
    Department of Veterinary Physiology, BK21 Biotherapy Human Resources Center, College of Veterinary Medicine, Chonnam National University, Gwangju 500 757, Korea
    J Cell Physiol 216:269-75. 2008
    ..Therefore, using mouse embryonic stem (ES) cells as a model system, this study evaluated the effects of dihydrotestosterone (DHT), a biologically active testosterone metabolite, on H2O2-induced apoptosis...
  24. ncbi Prostate cancer stromal cells and LNCaP cells coordinately activate the androgen receptor through synthesis of testosterone and dihydrotestosterone from dehydroepiandrosterone
    Atsushi Mizokami
    Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Sciences, Takaramachi, Kanazawa City, Japan
    Endocr Relat Cancer 16:1139-55. 2009
    ..Biosynthesis of testosterone or dihydrotestosterone from DHEA in stromal cells and LNCaP cells was involved in this stimulation of LNCaP cell proliferation...
  25. pmc Stereo-selective inhibition of transient receptor potential TRPC5 cation channels by neuroactive steroids
    Y Majeed
    Multidisciplinary Cardiovascular Research Centre, University of Leeds, Leeds, UK
    Br J Pharmacol 162:1509-20. 2011
    ..Steroids are known to modulate fear and anxiety states, and we therefore investigated whether TRPC5 exhibited sensitivity to steroids...
  26. ncbi The androgen 5alpha-dihydrotestosterone and its metabolite 5alpha-androstan-3beta, 17beta-diol inhibit the hypothalamo-pituitary-adrenal response to stress by acting through estrogen receptor beta-expressing neurons in the hypothalamus
    Trent D Lund
    Department of Biomedical Sciences, Colorado State University, Fort Collins, Colorado 80523, USA
    J Neurosci 26:1448-56. 2006
    ..action on these neurons, we examined the effects of central implants of 17beta-estradiol (E2), 5alpha-dihydrotestosterone (DHT), the DHT metabolite 5alpha-androstan-3beta, 17beta-diol (3beta-diol), and several ER subtype-..
  27. ncbi Endothelial regulation of eNOS, PAI-1 and t-PA by testosterone and dihydrotestosterone in vitro and in vivo
    L Goglia
    Department of Reproductive Medicine and Child Development, Molecular and Cellular Gynecological Endocrinology Laboratory MCGEL, University of Pisa, Pisa, Italy
    Mol Hum Reprod 16:761-9. 2010
    ..of this study is the identification of direct endothelial regulation by the androgens testosterone (T) and dihydrotestosterone (DHT)...
  28. ncbi Marked suppression of dihydrotestosterone in men with benign prostatic hyperplasia by dutasteride, a dual 5alpha-reductase inhibitor
    Richard V Clark
    Clinical Pharmacology, GlaxoSmithKline Research and Development, Research Triangle Park, North Carolina 27709, USA
    J Clin Endocrinol Metab 89:2179-84. 2004
    b>Dihydrotestosterone (DHT) is the primary metabolite of testosterone in the prostate and skin. Testosterone is converted to DHT by 5alpha-reductase, which exists in two isoenzyme forms (types 1 and 2)...
  29. pmc A sex-specific role for androgens in angiogenesis
    Daniel P Sieveking
    Heart Research Institute, Sydney 2042, Australia
    J Exp Med 207:345-52. 2010
    ..Our findings suggest that endogenous androgens modulate angiogenesis in a sex-dependent manner, with implications for the role of androgen replacement in men...
  30. pmc Reexamination of testosterone, dihydrotestosterone, estradiol and estrone levels across the menstrual cycle and in postmenopausal women measured by liquid chromatography-tandem mass spectrometry
    Micol S Rothman
    Department of Medicine, University of Colorado Denver, Aurora, CO 80045, USA
    Steroids 76:177-82. 2011
    ..liquid chromatography-tandem mass spectrometry (LC-MS/MS) assays to determine testosterone (T) and dihydrotestosterone (DHT) along with estradiol (E2) and estrone (E1) levels across the menstrual cycle of 31 healthy ..
  31. ncbi Glucocorticoids can promote androgen-independent growth of prostate cancer cells through a mutated androgen receptor
    X Y Zhao
    Department of Medicine, Stanford University School of Medicine, Stanford, California 94305, USA
    Nat Med 6:703-6. 2000
    ..Understanding this mechanism and recognizing the presence of glucocorticoid-responsive AR mutants are important for the development of new forms of therapy for the treatment of this subset of CaP...
  32. pmc Tissue culture media supplemented with 10% fetal calf serum contains a castrate level of testosterone
    J P Michiel Sedelaar
    Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins University, School of Medicine, Baltimore, MD 21231, USA
    Prostate 69:1724-9. 2009
    ..e., DC-FCS) is often used instead of FCS to minimize the level of androgen provided in 10% serum supplemented media. Therefore, total and free testosterone levels in 10%DC-FCS containing media were likewise determined...
  33. ncbi Testosterone and dihydrotestosterone, but not estradiol, enhance survival of new hippocampal neurons in adult male rats
    Mark D Spritzer
    Department of Psychology, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
    Dev Neurobiol 67:1321-33. 2007
    ..We next tested the role of testosterone's two major metabolites, dihydrotestosterone (DHT), and estradiol, upon neurogenesis. Thirty days of injections of DHT (0.25 and 0...
  34. ncbi The influence of androgen deprivation therapy on dihydrotestosterone levels in the prostatic tissue of patients with prostate cancer
    Tsutomu Nishiyama
    Division of Urology, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan nisiyamamed niigata u ac jp
    Clin Cancer Res 10:7121-6. 2004
    The influence of androgen deprivation therapy on dihydrotestosterone levels in the prostatic tissue is not clearly known...
  35. ncbi Inhibition of glycogen synthase kinase-3beta promotes nuclear export of the androgen receptor through a CRM1-dependent mechanism in prostate cancer cell lines
    Stefanie V Schütz
    Institute of General Zoology and Endocrinology, Ulm University, Albert Einstein Allee 11, 89069 Ulm, Germany
    J Cell Biochem 109:1192-200. 2010
    ..In advanced prostate cancer (PCa) cell lines, an increased sensitivity to dihydrotestosterone (DHT), enabling the cells to proliferate under sub-physiological levels of androgens, has been associated ..
  36. ncbi 17beta-hydroxysteroid dehydrogenase type 1 stimulates breast cancer by dihydrotestosterone inactivation in addition to estradiol production
    Juliette A Aka
    Research Center of the Laval University Hospital Center CHUQ CHUL and Laval University, Quebec, Canada
    Mol Endocrinol 24:832-45. 2010
    The active estrogen estradiol (E2) stimulates breast cancer cell (BCC) growth, whereas the androgen dihydrotestosterone (DHT) has shown an antiproliferative effect...
  37. ncbi Effects of dihydrotestosterone on synaptic plasticity of hippocampus in male SAMP8 mice
    Sha Li
    Department of Human Anatomy, Hebei Medical University, Shijiazhuang 050017, PR China
    Exp Gerontol 48:778-85. 2013
    ..of androgen deficiency on the synaptic plasticity of hippocampus in male SAMP8 mice after castration and dihydrotestosterone (DHT) administration...
  38. ncbi Pharmacologic basis for the enhanced efficacy of dutasteride against prostatic cancers
    Yi Xu
    Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland 21231, USA
    Clin Cancer Res 12:4072-9. 2006
    Prostatic dihydrotestosterone (DHT) concentration is regulated by precursors from systemic circulation and prostatic enzymes of androgen metabolism, particularly 5alpha-reductases (i.e., SRD5A1 and SRD5A2)...
  39. ncbi Androgens activate mitogen-activated protein kinase signaling: role in neuroprotection
    Thuy Vi V Nguyen
    Neuroscience Graduate Program, University of Southern California, Los Angeles, California 90089 0191, USA
    J Neurochem 94:1639-51. 2005
    ..We observed that testosterone and its non-aromatizable metabolite dihydrotestosterone (DHT) rapidly and transiently activate MAPK in cultured hippocampal neurons, as evidenced by ..
  40. ncbi 5alpha-reductase activity in the prostate
    W D Steers
    Department of Urology, University of Virginia School of Medicine, Charlottesville, Virginia 22908, USA
    Urology 58:17-24; discussion 24. 2001
    ..Testosterone is converted to dihydrotestosterone (DHT) by the enzyme Delta(4), 3 ketosteroid, 5alpha-reductase in prostatic stromal and basal cells...
  41. ncbi Dihydrotestosterone treatment results in obesity and altered lipid metabolism in orchidectomized mice
    Sofia Movérare-Skrtic
    Center for Bone Research at the Sahlgrenska Academy CBS, Department of Internal Medicine, Goteborg, Sweden
    Obesity (Silver Spring) 14:662-72. 2006
    ..Previous studies have shown that estrogen receptor alpha stimulation results in reduced fat mass in men...
  42. ncbi A double-blind, placebo-controlled, randomized clinical trial of transdermal dihydrotestosterone gel on muscular strength, mobility, and quality of life in older men with partial androgen deficiency
    L P Ly
    Department of Andrology, Concord Hospital, Concord, New South Wales 2139, Australia
    J Clin Endocrinol Metab 86:4078-88. 2001
    ..b>Dihydrotestosterone is the highest potency natural androgen with the additional features that it is neither aromatizable nor ..
  43. ncbi Changes in androgen receptor nongenotropic signaling correlate with transition of LNCaP cells to androgen independence
    Emmanual Unni
    Department of Medicine, Baylor College of Medicine and VA Medical Center, Houston, Texas, USA
    Cancer Res 64:7156-68. 2004
    ..In AD LNCaP(nan) cells, dihydrotestosterone (DHT) stimulated in an androgen receptor (AR)-dependent way a phosphorylation signaling pathway involving ..
  44. ncbi Development of highly sensitive quantification method for testosterone and dihydrotestosterone in human serum and prostate tissue by liquid chromatography-electrospray ionization tandem mass spectrometry
    Kouwa Yamashita
    Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4 1 Komatsushima 4 chome, Aoba ku, Sendai, Miyagi 981 8558, Japan
    Steroids 74:920-6. 2009
    We developed highly sensitive detection of testosterone (T) and 5alpha-dihydrotestosterone (DHT) by liquid chromatography-electrospray ionization tandem mass spectrometry using high proton affinitive derivatization of 17beta-hydroxyl ..
  45. ncbi Persistent intraprostatic androgen concentrations after medical castration in healthy men
    Stephanie T Page
    University of Washington Medical Center, Division of Metabolism, Endocrinology and Nutrition, Box 357138, 1959 NE Pacific, Seattle, WA 98195
    J Clin Endocrinol Metab 91:3850-6. 2006
    ..Studies of men with prostate cancer have suggested that prostatic androgens are preserved in the setting of castration. Tissue androgens might stimulate prostate growth, producing adverse clinical consequences...
  46. ncbi Prostatic tissue testosterone and dihydrotestosterone in African-American and white men
    Leonard S Marks
    Department of Urology, University of California, Los Angeles, Geffen School of Medicine, Los Angeles, California, USA
    Urology 68:337-41. 2006
    ..To compare tissue androgen levels in the prostate gland of African-American and white men, looking for a possible explanation of the increased incidence of cancer in the former...
  47. ncbi Androgens stimulate hypoxia-inducible factor 1 activation via autocrine loop of tyrosine kinase receptor/phosphatidylinositol 3'-kinase/protein kinase B in prostate cancer cells
    Nicola J Mabjeesh
    Winship Cancer Institute, Department of Hematology and Oncology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
    Clin Cancer Res 9:2416-25. 2003
    ..Experimental Design: Androgen and antiandrogen effects were evaluated on HIF-1alpha protein and HIF-1 transcriptional activation in human PCA cells...
  48. ncbi Development of a quantitative RT-PCR method to study 5alpha-reductase mRNA isozymes in rat prostate in different androgen status
    Jesus M Torres
    Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Granada, Granada, Spain
    Prostate 56:74-9. 2003
    ..The development and growth of the prostate gland depends on androgen stimulation. Dihydrotestosterone (DHT) is the primary androgen responsible for prostate development and also for the pathogenesis of benign ..
  49. ncbi The change in the dihydrotestosterone level in the prostate before and after androgen deprivation therapy in connection with prostate cancer aggressiveness using the Gleason score
    Tsutomu Nishiyama
    Division of Urology, Department of Regenerative and Transplant Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
    J Urol 178:1282-8; discussion 1288-9. 2007
    We investigated the change in dihydrotestosterone in the prostate during androgen deprivation therapy in connection with prostate cancer aggressiveness using the Gleason score.
  50. ncbi Inhibition of the dihydrotestosterone-activated androgen receptor by nuclear receptor corepressor
    Shinta Cheng
    Cancer Biology Program, Division of Hematology Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA
    Mol Endocrinol 16:1492-501. 2002
    ..This report demonstrates that NCoR interacts directly with the androgen receptor (AR) and represses dihydrotestosterone-stimulated AR transcriptional activity...
  51. ncbi Postnatal testosterone exposure results in insulin resistance, enlarged mesenteric adipocytes, and an atherogenic lipid profile in adult female rats: comparisons with estradiol and dihydrotestosterone
    Camilla Alexanderson
    Institute of Neuroscience and Physiology, Department of Physiology Endocrinology, Sahlgrenska Academy, Goteborg University, Box 434, 405 30, Goteborg, Sweden
    Endocrinology 148:5369-76. 2007
    ..in these programming effects, we compared testosterone-exposed rats to rats exposed to estradiol or dihydrotestosterone (DHT)...
  52. ncbi Dihydrotestosterone-inducible dickkopf 1 from balding dermal papilla cells causes apoptosis in follicular keratinocytes
    Mi Hee Kwack
    Department of Immunology, School of Medicine, Kyungpook National University, Daegu, Korea
    J Invest Dermatol 128:262-9. 2008
    ..Here, we screened dihydrotestosterone (DHT)-regulated genes in balding DP cells and found that dickkopf 1 (DKK-1) is one of the most upregulated ..
  53. pmc Deleterious effects of dihydrotestosterone on cerebral ischemic injury
    Jian Cheng
    Department of Anesthesiology and Peri Operative Medicine, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    J Cereb Blood Flow Metab 27:1553-62. 2007
    ..The present study determined if the potent and nonaromatizable androgen, dihydrotestosterone (DHT), exacerbates ischemic damage in the male rat and alters postischemic gene expression after middle ..
  54. ncbi Repression of activated aryl hydrocarbon receptor-induced transcriptional activation by 5alpha-dihydrotestosterone in human prostate cancer LNCaP and human breast cancer T47D cells
    Noriko Sanada
    Faculty of Pharmaceutical Sciences, Doshisha Women s College of Liberal Arts, Japan
    J Pharmacol Sci 109:380-7. 2009
    ..These results suggest that complex formation between activated AR and AhR plays an important role in the suppression of 3MC-induced transcription of CYP1 family genes by DHT...
  55. ncbi Effect of 5alpha-dihydrotestosterone and testosterone on apoptosis in human dermal papilla cells
    A Winiarska
    Department of Dermatology and Allergy, Charite Universitatsmedizin Berlin, Berlin, Germany
    Skin Pharmacol Physiol 19:311-21. 2006
    ..not yet fully understood; however, it is commonly accepted that androgens like testosterone (T) and 5alpha-dihydrotestosterone (5alpha-DHT) inhibit hair follicle activity with early induction of the catagen...
  56. ncbi Dihydrotestosterone-inducible IL-6 inhibits elongation of human hair shafts by suppressing matrix cell proliferation and promotes regression of hair follicles in mice
    Mi Hee Kwack
    Department of Immunology, Kyungpook National University School of Medicine, Daegu, Korea
    J Invest Dermatol 132:43-9. 2012
    Autocrine and paracrine factors are produced by balding dermal papilla (DP) cells following dihydrotestosterone (DHT)-driven alterations and are believed to be key factors involved in male pattern baldness...
  57. pmc Cloning and characterization of a specific coactivator, ARA70, for the androgen receptor in human prostate cells
    S Yeh
    Department of Medicine and University of Wisconsin Comprehensive Cancer Center, University of Wisconsin, Madison 53792, USA
    Proc Natl Acad Sci U S A 93:5517-21. 1996
    ..which functions as an activator to enhance AR transcriptional activity 10-fold in the presence of 10(-10) M dihydrotestosterone or 10(-9) M testosterone, but not 10(-6) M hydroxyflutamide in human prostate cancer DU145 cells...
  58. ncbi Dihydrotestosterone inhibits interleukin-1α or tumor necrosis factor α-induced proinflammatory cytokine production via androgen receptor-dependent inhibition of nuclear factor-κB activation in rheumatoid fibroblast-like synovial cell line
    Jian Xu
    Department of Molecular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3 1 Tanabe dori, Mizuho ku, Nagoya, Japan
    Biol Pharm Bull 34:1724-30. 2011
    ..We found that a potent androgen, 5α-dihydrotestosterone (DHT) inhibits IL-1α-induced production and mRNA expression of IL-8, IL-6 and IL-1β from RA patient-..
  59. pmc Cloning and characterization of TDD5, an androgen target gene that is differentially repressed by testosterone and dihydrotestosterone
    T M Lin
    Department of Medicine, University of Wisconsin Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53792, USA
    Proc Natl Acad Sci U S A 94:4988-93. 1997
    ..blot analysis further demonstrated that the expression of TDD5 was differentially repressed by T and dihydrotestosterone (DHT) at the mRNA level...
  60. pmc Dihydrotestosterone administration does not increase intraprostatic androgen concentrations or alter prostate androgen action in healthy men: a randomized-controlled trial
    Stephanie T Page
    Division of Metabolism, Endocrinology, and Nutrition, University of Washington School of Medicine, Box 357138, 1959 NE Pacific Street, Seattle, Washington 98195, USA
    J Clin Endocrinol Metab 96:430-7. 2011
    Concern exists that androgen treatment might adversely impact prostate health in older men. Dihydrotestosterone (DHT), derived from local conversion of testosterone to DHT by 5α-reductase enzymes, is the principal androgen within the ..
  61. ncbi Long-term effects of dihydrotestosterone treatment on prostate growth in healthy, middle-aged men without prostate disease: a randomized, placebo-controlled trial
    Amanda Idan
    Concord Hospital, ANZAC Research Institute, University of Sydney, Sydney, Australia
    Ann Intern Med 153:621-32. 2010
    ..Surgery is often required to control symptoms. It has been hypothesized that long-term administration of a nonamplifiable pure androgen might decrease prostate growth, thereby decreasing or delaying the need for surgical intervention...
  62. ncbi Of marsupials and men: "Backdoor" dihydrotestosterone synthesis in male sexual differentiation
    Anna Biason-Lauber
    Department of Medicine, Division of Endocrinology, University of Fribourg, Chemin du Musee 5, 1700 Fribourg, Switzerland
    Mol Cell Endocrinol 371:124-32. 2013
    ..Fetal Leydig cells produce testosterone that is converted to dihydrotestosterone in genital skin, resulting in labio-scrotal fusion...
  63. ncbi Persistent organic pollutants have dose and CAG repeat length dependent effects on androgen receptor activity in vitro
    Christel Björk
    Department of Clinical Sciences, Molecular Genetic Reproductive Medicine, Lund University, Malmo, Sweden
    Reprod Toxicol 32:293-7. 2011
    ..CB-153) and 1,1-bis-(4-chlorophenyl)-2,2-dichloroethene (4,4'-DDE) on 5α-dihydrotestosterone activated ARs containing 16, 22 and 28 CAG repeats, respectively...
  64. pmc Thrombospondin-1 regulates the normal prostate in vivo through angiogenesis and TGF-beta activation
    Philip P Fitchev
    Department of Surgery, NorthShore University HealthSystem Research Institute, Evanston, IL 60201, USA
    Lab Invest 90:1078-90. 2010
    ..Therefore, loss of TSP-1 during tumorigenesis would eliminate two barriers to cancer progression...
  65. ncbi Dihydrotestosterone suppresses foam cell formation and attenuates atherosclerosis development
    Yang Qiu
    Department of Medicine and Bioregulatory Science, Kyushu University, Higashi ku, Fukuoka 812 8582, Japan
    Endocrinology 151:3307-16. 2010
    ..We investigated the effect of the nonaromatized natural androgen 5alpha-dihydrotestosterone (DHT) on the rabbit atherogenesis in relation to the proatherogenic molecule lectin-like oxidized-low-..
  66. ncbi Dihydrotestosterone interacts with EGFR/MAPK signalling and modulates EGFR levels in androgen receptor-positive LNCaP prostate cancer cells
    Biswajit Mukherjee
    Hormones and Signal Transduction Group, German Cancer Research Centre, D 69120 Heidelberg, Germany
    Int J Oncol 33:623-9. 2008
    ..We found that 5alpha-dihydrotestosterone (DHT) and EGF had a synergistic effect on AR activity as detected by a luciferase reporter system, although ..
  67. ncbi Dihydrotestosterone protects human vascular endothelial cells from H(2)O(2)-induced apoptosis through inhibition of caspase-3, caspase-9 and p38 MAPK
    Zhe rong Xu
    Department of Geriatrics, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
    Eur J Pharmacol 643:254-9. 2010
    ..This study was designed to investigate the protective effect and potential mechanisms of dihydrotestosterone (DHT) against H(2)O(2)-induced apoptosis of human umbilical vein endothelial cells (ECV-304)...
  68. ncbi Organizational effects of testosterone, estradiol, and dihydrotestosterone on vasopressin mRNA expression in the bed nucleus of the stria terminalis
    Tina M Han
    Center for Neuroendocrine Studies, University of Massachusetts, Amherst, Massachusetts 01003, USA
    J Neurobiol 54:502-10. 2003
    ..We then sought to determine the effects of testosterone metabolites, estradiol and dihydrotestosterone, given alone or in combination, on AVP expression in the BST...
  69. pmc Androgen-dependent regulation of human MUC1 mucin expression
    Stephen Mitchell
    Department of Histopathology, Faculty of Medicine, Imperial College, Hammersmith Hospital, London, UK
    Neoplasia 4:9-18. 2002
    ..This is also functionally associated with decreased cell-cell adhesion, a recognised feature of progressive malignancy. These findings have important implications for physiological and pathological processes...
  70. ncbi Dihydrotestosterone and the prostate: the scientific rationale for 5alpha-reductase inhibitors in the treatment of benign prostatic hyperplasia
    Gerald Andriole
    Division of Urological Surgery, Washington University in St Louis, St Louis, Missouri 63110, USA
    J Urol 172:1399-403. 2004
    We reviewed the physiological and pathogenic role of dihydrotestosterone (DHT), evidence for the beneficial effects of decreasing DHT through 5alpha-reductase inhibition and the effects of altering the androgen balance with these agents.
  71. pmc Developmental programming: differential effects of prenatal testosterone and dihydrotestosterone on follicular recruitment, depletion of follicular reserve, and ovarian morphology in sheep
    Peter Smith
    AgResearch Wallaceville, Upper Hutt, New Zealand
    Biol Reprod 80:726-36. 2009
    ..Pregnant sheep were given twice-weekly injections of testosterone or dihydrotestosterone (DHT), a nonaromatizable androgen, from Days 30 to 90 of gestation...
  72. ncbi Sex differences in brain and plasma beta-endorphin content following testosterone, dihydrotestosterone and estradiol administration to gonadectomized rats
    Nicola Pluchino
    Department of Reproductive Medicine and Child Development, Division of Gynecology and Obstetrics, University of Pisa, Pisa, Italy
    Neuroendocrinology 89:411-23. 2009
    The present study aims at evaluating the effect of a 2-week treatment with testosterone (T), dihydrotestosterone (DHT) and estradiol valerate (E(2)V) on brain and plasma beta-endorphin (beta-END) concentrations in gonadectomized rats of ..
  73. pmc Isoflavone supplements stimulated the production of serum equol and decreased the serum dihydrotestosterone levels in healthy male volunteers
    M Tanaka
    Department of Urology, Nara Medical University, Kashihara, Japan
    Prostate Cancer Prostatic Dis 12:247-52. 2009
    ..of sex hormone-binding globulin significantly increased, and the serum levels of free testosterone and dihydrotestosterone (DHT) decreased significantly after 3-month supplementation...
  74. pmc Prenatal testosterone and dihydrotestosterone exposure disrupts ovine testicular development
    Charles L Bormann
    Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan 48109, USA
    Reproduction 142:167-73. 2011
    ..The objectives of this study were to determine the effects of prenatal 5α-dihydrotestosterone (DHT) and testosterone treatment during ovine sexual differentiation on post-pubertal testicular formation ..
  75. pmc Estrogen receptor β and 17β-hydroxysteroid dehydrogenase type 6, a growth regulatory pathway that is lost in prostate cancer
    Selvaraj Muthusamy
    Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, TX 77204, USA
    Proc Natl Acad Sci U S A 108:20090-4. 2011
    ..The proliferative action of the androgen receptor is activated by 5α-dihydrotestosterone (DHT). Thus, prostate growth is governed by the balance between androgen receptor and ERβ activation...
  76. ncbi Electrical and manual acupuncture stimulation affect oestrous cyclicity and neuroendocrine function in an 5α-dihydrotestosterone-induced rat polycystic ovary syndrome model
    Yi Feng
    Institute of Neuroscience and Physiology, Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Sweden
    Exp Physiol 97:651-62. 2012
    ..than manual stimulation in regulating disturbed oestrous cyclicity in rats with PCOS induced by 5α-dihydrotestosterone. To identify the central mechanisms of the effects of stimulation, we assessed hypothalamic mRNA expression ..
  77. pmc Modulation of androgen receptor activation function 2 by testosterone and dihydrotestosterone
    Emily B Askew
    Curriculum in Toxicology, Laboratories for Reproductive Biology, Lineberger Comprehensive Cancer Center, Department of Pediatrics, University of North Carolina, Chapel Hill 27599, USA
    J Biol Chem 282:25801-16. 2007
    ..transcriptionally activated by high affinity binding of testosterone (T) or its 5alpha-reduced metabolite, dihydrotestosterone (DHT), a more potent androgen required for male reproductive tract development...
  78. pmc The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men
    Kishore M Lakshman
    Division of Endocrinology, Diabetes and Nutrition, Boston Claude D Pepper Older Americans Independence Center for Function Promoting Therapies, Boston University School of Medicine, Boston Medical Center, 670 Albany Street, Second Floor, Boston, Massachusetts 02118, USA
    J Clin Endocrinol Metab 95:3955-64. 2010
    During testosterone (T) therapy, T is partly converted to 17beta-estradiol (E2) and 5alpha-dihydrotestosterone (DHT). Effects of age, testosterone dose, and body composition on total and free E2 and DHT levels are unknown.
  79. ncbi Steroid 5alpha-reductase isozymes in the adult female rat brain: central role of dihydrotestosterone
    J M Torres
    Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Granada, Avda de Madrid s n, 18012 Granada, Spain
    J Mol Endocrinol 36:239-45. 2006
    ..In this work, we studied the effects of testosterone (T) and dihydrotestosterone (DHT) on mRNA levels of both 5alpha-R isoforms in the prefrontal cortex of the adult female rat by one-step ..
  80. pmc Estradiol induction of spermatogenesis is mediated via an estrogen receptor-{alpha} mechanism involving neuroendocrine activation of follicle-stimulating hormone secretion
    Charles M Allan
    ANZAC Research Institute, Sydney, New South Wales 2139, Australia
    Endocrinology 151:2800-10. 2010
    Both testosterone and its nonaromatizable metabolite dihydrotestosterone (DHT) induce spermatogenesis in gonadotropin-deficient hpg mice...
  81. pmc Androgen decreases dopamine neurone survival in rat midbrain
    M L Johnson
    Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, USA
    J Neuroendocrinol 22:238-47. 2010
    ..Replacement with testosterone or the non-aromatisable analogue dihydrotestosterone (DHT) in castrated animals reduced TH-IR cell number in the SNpc and VTA in rats...
  82. pmc Nuclear compartmentalization of N-CoR and its interactions with steroid receptors
    Yin Wu
    Department of Geriatric Medicine, Graduate School of Medical Sciences, Kyushu University, 3 1 1 Maidashi, Higashi ku, Fukuoka 812 8582, Japan
    Mol Cell Biol 26:6633-55. 2006
    ..In fluorescence recovery after photobleaching analysis, mobility of the N-CoR was reduced by 5alpha-dihydrotestosterone (DHT)-bound AR...
  83. ncbi Androgen receptor signaling induced by supraphysiological doses of dihydrotestosterone in human peripheral blood lymphocytes
    Esther Imperlini
    Fondazione SDN IRCCS, Napoli, Italy
    Proteomics 10:3165-75. 2010
    ..Testosterone, the main male sexual hormone, binds AR directly and indirectly, through conversion into dihydrotestosterone (DHT), its more active metabolite...
  84. ncbi Sexual dimorphism of growth plate prehypertrophic and hypertrophic chondrocytes in response to testosterone requires metabolism to dihydrotestosterone (DHT) by steroid 5-alpha reductase type 1
    P Raz
    Hebrew University Hadassah, Jerusalem, Israel
    J Cell Biochem 95:108-19. 2005
    ..response of rat costochondral cartilage cells to testosterone requires further metabolism of the hormone to dihydrotestosterone (DHT)...
  85. ncbi Androgens and estrogens induce seasonal-like growth of song nuclei in the adult songbird brain
    Anthony D Tramontin
    Department of Neurosurgery Research, University of California, San Francisco, California 94143, USA
    J Neurobiol 57:130-40. 2003
    ..regressed song control nuclei were implanted with silastic capsules containing either crystalline T, 5alpha-dihydrotestosterone (DHT), estradiol (E(2)), or a combination of DHT+E(2). Control animals received empty implants...
  86. ncbi Upregulation of prostate specific membrane antigen/folate hydrolase transcription by an enhancer
    Kenneth R Noss
    Research Service 151, Overton Brooks Veterans Administration Medical Center, Shreveport, LA 71101 4295, USA
    Gene 285:247-56. 2002
    ..These results demonstrate significant upregulation of transcription by the PSMA promoter/enhancer, with specificity for the LNCaP prostate cell line, and downregulation of transcription in response to physiological levels of androgen...
  87. ncbi Estrogen receptor-beta mediates dihydrotestosterone-induced stimulation of the arginine vasopressin promoter in neuronal cells
    Toni R Pak
    Department of Biomedical Science, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins 80523, USA
    Endocrinology 148:3371-82. 2007
    ..However, 5alpha-dihydrotestosterone (DHT) has also been shown to play a role in the regulation of AVP expression, thus implicating the ..
  88. ncbi A novel spreadsheet method for calculating the free serum concentrations of testosterone, dihydrotestosterone, estradiol, estrone and cortisol: with illustrative examples from male and female populations
    Norman A Mazer
    Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston, MA, United States
    Steroids 74:512-9. 2009
    In humans, testosterone (T), dihydrotestosterone (DHT), estradiol (E2), estrone (E1) and cortisol (C) bind to the serum proteins sex hormone-binding globulin (SHBG), albumin (Alb) and corticosteroid-binding globulin (CBG)...
  89. ncbi The role of 5alpha-reduction in steroid hormone physiology
    J D Wilson
    Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas 75390 8857, USA
    Reprod Fertil Dev 13:673-8. 2001
    A role for 5alpha-reduction in androgen physiology was first established with the recognition that dihydrotestosterone, the 5alpha-reduced metabolite of testosterone, is formed in many androgen target tissues, binds to the androgen ..
  90. pmc Potential prostate cancer drug target: bioactivation of androstanediol by conversion to dihydrotestosterone
    James L Mohler
    Department of Urology, Roswell Park Cancer Institute, Department of Urology, University at Buffalo, State University of New York, Buffalo, New York, USA
    Clin Cancer Res 17:5844-9. 2011
    High-affinity binding of dihydrotestosterone (DHT) to the androgen receptor (AR) initiates androgen-dependent gene activation, required for normal male sex development in utero, and contributes to prostate cancer development and ..
  91. ncbi Role of androgens on MCF-7 breast cancer cell growth and on the inhibitory effect of letrozole
    Luciana F Macedo
    Department of Pharmacology and Experimental Therapeutics, University of Maryland, 685 West Baltimore Street, Baltimore, MD 21201, USA
    Cancer Res 66:7775-82. 2006
    ..Here, we report that androgens, such as the aromatizable androstenedione and the non-aromatizable 5alpha-dihydrotestosterone, inhibit MCF-7 cell proliferation...
  92. ncbi Lack of effect of testosterone and dihydrotestosterone compared to 17beta-oestradiol in 1-methyl-4-phenyl-1,2,3,6, tetrahydropyridine-mice
    A Ekue
    Molecular Endocrinology and Oncology Research Center, Laval University Medical Center, CHUL and Faculty of Pharmacy, Laval University, Quebec, Canada
    J Neuroendocrinol 14:731-6. 2002
    ..The effects of 17beta-oestradiol (2 microg/day), testosterone (100 microg/day) and dihydrotestosterone (DHT) (2 microg/day or 100 microg/day) were studied during 5 days before and after an acute treatment of ..
  93. ncbi A novel ultrapressure liquid chromatography tandem mass spectrometry method for the simultaneous determination of androstenedione, testosterone, and dihydrotestosterone in pediatric blood samples: age- and sex-specific reference data
    A E Kulle
    Department of Pediatrics, Christian Albrechts University of Kiel, 24105 Kiel, Germany
    J Clin Endocrinol Metab 95:2399-409. 2010
    ..Mass spectrometry-based methods are available for individual steroids but need complex sample preparation and report only fragmentary reference data for the pediatric population...
  94. pmc Testosterone, not 5α-dihydrotestosterone, stimulates LRH-1 leading to FSH-independent expression of Cyp19 and P450scc in granulosa cells
    Yan Guang Wu
    Department of Physiology and Biophysics, College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, USA
    Mol Endocrinol 25:656-68. 2011
    ..T can be converted into estradiol, a classical estrogen, by Cyp19 and into 5α-dihydrotestosterone, a pure androgen, by 5α-reductase...
  95. ncbi Dihydrotestosterone decreases tumor necrosis factor-alpha and lipopolysaccharide-induced inflammatory response in human endothelial cells
    Giuseppe Danilo Norata
    Department of Pharmacological Sciences, University of Milan, Italy, Via Balzaretti 9, 20133 Milan, Italy
    J Clin Endocrinol Metab 91:546-54. 2006
    ..It was suggested that testosterone may act after conversion into estradiol and activation of the estrogen receptors; however, a direct role of androgens on the vascular wall has been proposed...
  96. ncbi Androgen receptor (AR) NH2- and COOH-terminal interactions result in the differential influences on the AR-mediated transactivation and cell growth
    Cheng Lung Hsu
    The George H Whipple Laboratory for Cancer Research, Department of Pathology, and the Cancer Center, University of Rochester Medical Center, Rochester, New York 14642, USA
    Mol Endocrinol 19:350-61. 2005
    ..peptides can suppress prostate cancer LNCaP cell growth at different levels in the presence of 5alpha-dihydrotestosterone, but only the tested FXXLF-containing peptides, not FXXMF-containing peptides, can suppress prostate cancer ..
  97. pmc Activated androgen receptor downregulates E-cadherin gene expression and promotes tumor metastasis
    Yan Nian Liu
    Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan
    Mol Cell Biol 28:7096-108. 2008
    ..Treating cells with the AR ligand, dihydrotestosterone (DHT), triggered the reduction of E-cadherin expression and induced changes in cell morphology from an ..
  98. pmc Androgen treatment and muscle strength in elderly men: A meta-analysis
    Kenneth J Ottenbacher
    Division of Rehabilitation Sciences, Sealy Center on Aging, Houston, Texas, USA
    J Am Geriatr Soc 54:1666-73. 2006
    ..To review published, randomized trials examining the effect of androgen treatment on muscle strength in older men...
  99. ncbi Differential regulation of steroid 5alpha-reductase isozymes expression by androgens in the adult rat brain
    J M Torres
    Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Granada, Avda de Madrid s n, 18012 Granada, Spain
    FASEB J 17:1428-33. 2003
    ..of 5alpha-R in the brain derives from its capability to convert testosterone (T) to a more potent androgen, dihydrotestosterone (DHT), and to convert progesterone and deoxycorticosterone (DOC) to their respective 5alpha-reduced ..
  100. ncbi p66Shc protein is upregulated by steroid hormones in hormone-sensitive cancer cells and in primary prostate carcinomas
    Ming Shyue Lee
    Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
    Int J Cancer 108:672-8. 2004
    ..05). The data collectively indicate that p66(Shc) protein levels correlate with steroid hormone-stimulated cell growth and prostate carcinogenesis...
  101. ncbi Androgen biosynthetic pathways in the human prostate
    Van Luu-The
    Laboratory of Molecular Endocrinology and Oncology, Laval University Hospital Research Center, Laval University, Quebec, Canada
    Best Pract Res Clin Endocrinol Metab 22:207-21. 2008
    It is well recognized that there are two androgens, namely testosterone (T) and dihydrotestosterone (DHT); T plays an important role in the testis and muscle, and DHT is crucial for the development, function and pathology of the prostate...

Research Grants65

  1. Role of 5-alpha Reductase in Testosterone Actions
    Shalendar Bhasin; Fiscal Year: 2007
    ..as a prohormone that is converted in the body to two active metabolites, estradiol 17beta and 5-alpha dihydrotestosterone (DHT)...
  2. A Soft Topical Antiandrogenic Drug
    Wei Chu Xu; Fiscal Year: 2013
    ..is now widely recognized that testosterone (T) is an androgenic precursor of the more potent 5[unreadable]-dihydrotestosterone (DHT), produced by 5[unreadable]-reductase type 2...
  3. Equol and Regulation of Prostate Growth
    Robert J Handa; Fiscal Year: 2011
    ..circulating testosterone;inhibition of 5-alpha reductase, an enzyme that synthesizes the potent androgen, dihydrotestosterone;or blocking the actions of the androgen receptor...
  4. Interactions of MAO A with vulnerability factors for aggression
    Marco Bortolato; Fiscal Year: 2012
    ..found that 5-1 reductase (5AR), the enzyme that converts testosterone into its potent androgenic metabolite dihydrotestosterone (DHT), is affected by early stress and MAO-A deficiency;furthermore, its inhibition by finasteride reduces ..
  5. Metformin as a novel chemopreventive agent for prostate cancer
    Xin Li; Fiscal Year: 2013
    ..treated with metformin, metformin plus rapamycin or vehicle for 12- and 24-weeks and MYC, testosterone (T), dihydrotestosterone (DHT), androgen receptor levels, proliferation, apoptosis indices and microvessel density will be ..
  6. Androgen Modulation of Neurodegeneration in Dopamine Neurons
    Rebecca L Cunningham; Fiscal Year: 2010
    ..gonadally intact aged males, and gonadectomized aged males plus replacement androgen (testosterone or dihydrotestosterone) for either a chronic (3 months) or acute (1 week) treatment time length prior to 6-OHDA lesion...
  7. A Novel Synthetic Androgen Receptor Antagonist
    Zhongyun Dong; Fiscal Year: 2012
    ..DL3 inhibits dihydrotestosterone (DHT)-stimulated cell growth and gene expression in all prostate cancer cell lines tested, including ..
  8. Ovarian Androgen Production and Control of Follicular Funtion
    K M JAIRAM MENON; Fiscal Year: 2010
    ..The specific step(s) in this pathway affected by dihydrotestosterone will also be determined...
  9. Androgen Receptor Function in Prostate Cancer
    Richard G Pestell; Fiscal Year: 2013
    ..AR acetylation and phosphorylation are linked, 2. SirT1 expression and function are regulated by dihydrotestosterone (DHT) and metabolism 3. AR is repressed by the NAD-dependent histone deacetylases (SirT1), and 4...
  10. Prenatal androgen exposure: adverse effects and novel treatment strategies.
    FARAH H MORGAN; Fiscal Year: 2010
    ..In mice, in utero exposure to the non-aromatizable androgen dihydrotestosterone (DHT) generates female offspring that exhibit androgen excess, increased excitatory neurotransmission to ..
  11. Elucidating a novel molecular biomarker for castration-resistant prostate cancer
    Nima Sharifi; Fiscal Year: 2013
    ..that has been clinically validated has demonstrated that conversion from adrenal precursor steroids to dihydrotestosterone (DHT), the most potent androgen that drives CRPC progression, unexpectedly bypasses testosterone...
  12. In vivo effects of sulforaphane supplementation on normal human prostate
    Daniel W Lin; Fiscal Year: 2013
    ..and reduces oxidative damage in human prostate and (2) increases DHT catabolism and reduces intra-prostatic dihydrotestosterone (DHT) concentration...
  13. Non-AR mediated DHT-promoted Bladder Cancer initiation and progression
    Chawnshang Chang; Fiscal Year: 2013
    ..we found near 25% of ARKO mice develop BBN-induced bladder tumor after supplementation with the androgen, dihydrotestosterone (DHT), suggesting DHT is able to function through non-AR pathways to promote bladder tumor progression...
  14. Cooperative steroidogenic inhibition for treatment of advanced prostate cancer
    Nima Sharifi; Fiscal Year: 2013
    ..Recent studies have shown that synthesis of dihydrotestosterone (DHT), the most potent androgen that drives CRPC progression, unexpectedly bypasses testosterone...
  15. MECHANISM OF SELENIUM POTENTIATION OF FINASTERIDE EFFICACY
    CLEMENT C IP; Fiscal Year: 2011
    ..inhibitor of 5a-reductase, an enzyme responsible for the irreversible conversion of testosterone to dihydrotestosterone (DHT)...
  16. Dose-response relationships between circulating and intraprostatic androgens in m
    Stephanie T Page; Fiscal Year: 2013
    DESCRIPTION (provided by applicant): Testosterone (T) and dihydrotestosterone (DHT) are the major androgens in the human prostate and are required for normal prostate development and homeostasis...
  17. Development of New therapies for Advanced Prostate Cancer
    Kimberly M Jackson; Fiscal Year: 2011
    ..The AR mediates the response to androgens (hormones) such as dihydrotestosterone making it a validated drug target in prostate cancer and other human diseases...
  18. Association between the Y chromosome and androgens
    Kathryn Sandberg; Fiscal Year: 2007
    ..Serum concentrations of free testosterone, dehydroepiandrosterone, dehydroepiandrosterone sulfate and dihydrotestosterone will be assessed by radioimmunoassay...
  19. BPH AND PROSTATE CA IN 5A-REDUCTASE-2 DEFICIENT CARRIERS
    Julianne Imperato McGinley; Fiscal Year: 2000
    The major phase of this study if designed to test the hypothesis that a mild decrease in dihydrotestosterone (DHT) throughout life will prevent the development of benign prostatic hyperplasia and prostate cancer...
  20. Impact of Puberty on the Kidney in Diabetes
    PASCALE LANE; Fiscal Year: 2005
    ..the role of the androgen receptor in the renal response to DM; and 5)Determine whether conversion to dihydrotestosterone is necessary for the post-pubertal renal response to STZ DM...
  21. STEROID 5 ALPHA REDUCTASE--STRUCTURE/FUNCTION
    Shutsung Liao; Fiscal Year: 2000
    ..5a-Reductase converts testosterone, the major circulating androgen in men, to dihydrotestosterone, a process believed to amplify the androgenic signal...
  22. Mechanisms of Testosterone Effects on Body Composition
    Shalendar Bhasin; Fiscal Year: 2007
    ..We hypothesize that testosterone and dihydrotestosterone (DHT), two prototypical androgens, promote the differentiation of adult, pluripotent mesenchymal stem cells ..
  23. Testosterone:Physical Function in Men on Hemodialysis
    Shalender Bhasin; Fiscal Year: 2004
    ..Total and free testosterone and dihydrotestosterone levels will be measured as markers of androgen bioavailability, and LH, FSH, and SHBG as markers of ..
  24. Hypospadias: Interactions of Sex Steroids and Fgfr2
    Martin Cohn; Fiscal Year: 2006
    ..second phase of male phallic development requires embryonic exposure to an androgen, either testosterone or dihydrotestosterone (DHT). Disruption of androgen signaling can induce hypospadias both in mammals and in alligators...
  25. Estrogen Metabolism and Action in Prostate Cancer Etiology in PCPT
    Ashraful Hoque; Fiscal Year: 2007
    ..inhibitor finasteride (versus placebo) found that inhibiting SRD5A2 from converting testosterone into dihydrotestosterone reduced total prostate cancer risk by 25%, but also increased the risk of high-grade cancer...
  26. TESTOSTERONE EFFECTS ON GONADOTROPINS AND LIPIDS IN MEN
    CARRIE BAGATELL; Fiscal Year: 1992
    ..T may exert its regulatory effects directly or via the actions of its metabolites dihydrotestosterone (DHT) and estradiol (E2)...
  27. Allium Compounds in Control of Human Prostate Cancer
    JOHN PINTO; Fiscal Year: 2003
    ..To test I validity of this hypothesis, we shall measure the conversion rate of testosterone to dihydrotestosterone (DHT), a more potent metabolite, through 5-alpha reductase, and the formation rate of a series of inactive ..
  28. Formulated Phytosterols - A New Treatment For Benign Prostatic Hyperplasia
    CURTIS SPILBURG; Fiscal Year: 2006
    ..This unchecked growth is most likely caused by dihydrotestosterone (DHT), and it produces a decreasing quality of life because of deterioration of urinary flow rate, nocturia ..
  29. ANDROGENS REGULATE IGF PATHWAY AND PROSTATE DISEASES
    Julianne Imperato McGinley; Fiscal Year: 2001
    ..Blocking conversion of testosterone to 5 alpha-dihydrotestosterone (DHT), inhibits prostatic IGF-I and IGF-I receptor gene expression while inducing IGFBP-3 gene expression...
  30. ANDROGEN REGULATION OF HUMAN SEBACEOUS GLANDS
    Diane Thiboutot; Fiscal Year: 2001
    ..individual transcripts, will enable us to test the following hypotheses: i) Conversion of testosterone to dihydrotestosterone by type 1 5a-reductase in fibroblasts and sebocytes is an obligatory step in the modulation of SG growth ..
  31. Pharmacogenetics of Alcohol: Treatment Implications
    Jonathan Covault; Fiscal Year: 2009
    ..Dutasteride is a 5-alpha steroid reductase (5AR) inhibitor that limits the production of dihydrotestosterone and the 5alpha-reduced neuroactive steroids allopregnanolone, pregnanolone and 3alpha, 5alpha-THDOC...
  32. DIAGNOSTIC CENTER
    M Lucia; Fiscal Year: 2004
    ..centers; these assays will include prostate specific antigen, luteinizing hormone, testosterone, and dihydrotestosterone. Blood chemistries will be carried out initially and annually for the duration of the trial (described in ..
  33. PHARMACOLOGICAL STUDIES OF CENTRAL SYNAPTIC TRANSMISSION
    SOLOMON ERULKAR; Fiscal Year: 1990
    ..By the use of patch clamp techniques, we have shown that 5-alpha-dihydrotestosterone (5 alpha-DHT) added to the bath can induce: 1) "anesthetic-like" effects at Acetylcholine (ACh)-activated ..
  34. ABP AND THE REGULATION OF GERM CELL APOPTOSIS IN TESTIS
    Peter Petrusz; Fiscal Year: 2000
    ..This may involve not only testosterone, but also is biologically active intratesticular metabolites dihydrotestosterone and estradiol...
  35. METABOLISM & CONTROL OF TESTOSTERONE ANDROGENS IN MAN
    Richard Horton; Fiscal Year: 1990
    ..While it is generally agreed that dihydrotestosterone (DHT) is synthesized peripherally and is the nuclear androgen in sexual tissue, markers of these events, ..
  36. Inhibitors of 5alpha-reductase for acne therapy
    Lingna Li; Fiscal Year: 2002
    ..4-MA) incorporated into liposomes selectively induces apoptosis and inhibits growth of the dihydrotestosterone (DHT)-dependent hamster flank organ sebaceous gland...
  37. 5 ALPHA REDUCTASE GENOTYPE, RACE PROSTATE CANCER RISK
    Laurence Kedes; Fiscal Year: 2003
    ..Regulation of prostatic cell growth is largely controlled by androgens including especially dihydrotestosterone (DHT)...
  38. Mechanisms of sex-determined resistance to L. mexicana
    Abhay Satoskar; Fiscal Year: 2005
    ..Moreover, we also found that ovactomized female DBA/2 mice treated with dihydrotestosterone (DHT); a derivative of testosterone that can not be converted to estradiol, become susceptible to L...
  39. Developmental toxicity of environmental chemicals
    FREDERICK VOM SAAL; Fiscal Year: 2006
    ..occurs; preliminary evidence suggests this is due to a decrease in the enzyme 5a-reductase, required for dihydrotestosterone (DHT) formation...
  40. FACTORS INFLUENCING TESTICULAR DESCENT
    FREDRICK GEORGE; Fiscal Year: 1992
    ..The role of 5 alpha-dihydrotestosterone in gubernacular differentiation and development will be examined in vivo by determining the effect of ..
  41. MALE PSEUDOHERMAPHRODITISM--THE BIOLOGY OF ANDROGENS
    Julianne Imperato McGinley; Fiscal Year: 1992
    ..are unique experiments of nature to elucidate the differential effects of testosterone (T) and dihydrotestosterone (DHT) in male sexual differentiation and development as well as other androgen mediated physiologic ..
  42. ANDROGEN GLUCURONIDES AS MARKERS OF ANDROGEN ACTION
    DELWOOD COLLINS; Fiscal Year: 1991
    Androgen action appears to occur only after conversion of testosterone (T) to dihydrotestosterone (DHT) or 5 alpha-androstanediol (3 alpha A) in some androgen responsive tissues...
  43. Membrane Androgen Receptors in Neuroprotection
    Meharvan Singh; Fiscal Year: 2007
    ..Classically, the effects of androgens like dihydrotestosterone (DHT) are attributed to the regulation of gene transcription through the androgen receptor, a member of the ..
  44. Anti-androgenic mechanism of a new compound
    Charles Shih; Fiscal Year: 2002
    ..We recently found that a derivative of diferuloylmethane (Compound 4) inhibited dihydrotestosterone-induced androgen receptor transactivation in human prostate cancer cells...
  45. Saw Palmetto Use and Risk of Prostate Cancer
    I Min Lee; Fiscal Year: 2004
    ..5-alpha reductase, the enzyme that converts testosterone to dihydrotestosterone, has been proposed to play a key role in the etiology of prostate cancer; thus, the NCI is currently ..
  46. Coronary Reactivity and Thromboxane Receptor Expression
    R Hermsmeyer; Fiscal Year: 2005
    ..The androgen path, particularly dihydrotestosterone (DHT), appears to be important...
  47. ANDROGEN RECEPTOR MEDIATED DETECTION OF PROSTATE CANCER
    Pradeep Garg; Fiscal Year: 2000
    ..We plan to explore this newly developed tracer for its potential as clinically utilizable imaging agent. ..
  48. Hormonal Control of SBMA Pathogenesis
    Diane Merry; Fiscal Year: 2007
    ..findings have shown that the disease is initiated by the binding of the AR to its ligand, testosterone or dihydrotestosterone, and its subsequent translocation to the nucleus...
  49. Biology of the Prostate Cancer Prevention Trial (PCPT)
    Scott Lippman; Fiscal Year: 2009
    ..and finasteride inhibits 5a-reductase, thus blocking the conversion of testosterone (by 5a-reductase) to dihydrotestosterone, the most active prostate androgen...
  50. Metabolic effects of steroid hormones in obese men
    Karen Herbst; Fiscal Year: 2007
    ..randomized, double-blind trial to determine the effects of T and its metabolites, estradiol (E2) and 5alpha-dihydrotestosterone (DHT) on insulin sensitivity, body composition and lipid metabolism in obese men with low or low-normal T ..
  51. HUMAN PROSTATIC 3A HYDROXYSTEROID DEHYDROGENASE
    Hsueh Kung Lin; Fiscal Year: 2002
    ..dehydrogenases (3a-HSDs) may regulate the occupancy of androgen receptor (AR) by interconverting 5a-dihydrotestosterone (5a-DHT, a potent androgen) with 5a-androstane-3a,17b-diol (3a-diol, a weak androgen)...
  52. REGULATION OF ANDROGEN RECEPTOR ACTIVITY IN THE PROSTATE
    Michael Garabedian; Fiscal Year: 2003
    ..Although androgen hormones, such as dihydrotestosterone (DHT), act as the primary signal in activating AR's transcriptional regulatory functions, AR-mediated ..
  53. SIGNIFICANCE OF ANTINUCLEIC ACID ANTIBODIES IN LUPUS
    Norman Talal; Fiscal Year: 1980
    ..autoimmune disease in NZB/NZW F1 mice (B/W) has been studied in four main areas: 1) Ability of 5-alpha dihydrotestosterone to suppress autoimmune disease in older animals...
  54. CELLULAR INTERACTIONS AND PROSTATE GROWTH
    Leland Chung; Fiscal Year: 1993
    ..In this study, we will pursue two major objectives: 1. We will define the role of dihydrotestosterone (DHT) in stromal-epithelial interactions in the rat prostate gland...
  55. HORMONAL VS CHEMICAL CARCINOGENESIS IN THE RAT PROSTATE
    Maarten Bosland; Fiscal Year: 1992
    ..1) Is the DLP dysplasia induced by administration of estradiol-17beta(E2) in combination with 5alpha-dihydrotestosterone (DHT) a preneoplastic lesion, and what is the most effective dose of E2 for studying the long term effects ..
  56. Molecular Determinants of Androgen Receptor Pharmacology
    Donald McDonnell; Fiscal Year: 2006
    ..Compounds like dihydrotestosterone (DHT) functioned as agonists by binding to and inducing a change in receptor structure...
  57. Northeast Under/Grad Research Organization for Neuroscience
    Cheryl Frye; Fiscal Year: 2008
    ..Both of these outcomes are congruous with the Public Health Service's mission to ensure that there is a resource of well-trained scientists and health-care providers in the United States. [unreadable] [unreadable] [unreadable]..
  58. Androgen action in bone: Overexpression of AR
    Kristine M Wiren; Fiscal Year: 2010
    ..These studies will identify specific molecular events/pathways influenced by androgen treatment in bone, and should lead to an improved understanding of mechanisms that influence adult bone size and quality. ..
  59. Persistent changes in brain expression after withdrawal
    KRISTINE WIREN; Fiscal Year: 2003
    ..e. physical dependence leading to withdrawal seizures) are regulated at the genetic level. This knowledge may help in the development of new strategies for the treatment of alcohol dependence. ..
  60. Symposium on Aldo-Keto Reductases & Toxicant Metabolism
    TREVOR PENNING; Fiscal Year: 2002
    ..abstract_text> ..
  61. Molecular Mechanisms of Multistage Carcinogenesis
    TREVOR PENNING; Fiscal Year: 2006
    ..By studying the discrete molecular events responsible for the causation of cancer this Program may lead to the early prevention and intervention of this disease. ..
  62. FEMALE SEXUAL AROUSAL: CLITORAL AND VAGINAL PHYSIOLOGY
    Abdulmaged Traish; Fiscal Year: 2003
    ....
  63. Oral Androgen Administration and Function in Man
    JOHN AMORY; Fiscal Year: 2008
    ..Matsumoto M.D., Director, Clinical Research Unit VA-Puget Sound and Professor of Medicine, University of Washington School of Medicine will co-mentor this award. [unreadable] [unreadable]..
  64. Harbor-UCLA Initiative for Minority Student Development
    Christina Wang; Fiscal Year: 2005
    ....
  65. MOLECULAR BASIS OF SEX STEROID ACTION IN PROSTATE CANCER
    Yuan Shan Zhu; Fiscal Year: 2005
    ..Androgens especially dihydrotestosterone (DHT) play a critical role in prostate development, growth and pathogenesis of benign prostate hyperplasia ..