Research Topics
Species | RICHARD LEGROSummaryAffiliation: Pennsylvania State University Country: USA Publications
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Publications
Obesity and PCOS: implications for diagnosis and treatmentRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Semin Reprod Med 30:496-506. 2012..However, further studies are needed to identify the best treatments, and the role of lifestyle therapies in women of normal weight with PCOS is uncertain...
Effects of gastric bypass surgery on female reproductive functionRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, 500 University Drive, H103, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 97:4540-8. 2012..Reproductive function may improve after bariatric surgery, although the mechanisms and time-related changes are unclear...
Disclosure of duplicative studies: damned if you don'tRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania Electronic address
Fertil Steril 98:1347-9. 2012..These practices result in publication bias. We have revised our instructions to authors to include disclosure of similar articles that are published, in press, or submitted to other journals to the editors upon submission...
Turner syndrome: new insights into an old disorderRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Fertil Steril 98:773-4. 2012..But many perplexing ethical and clinical issues persist...
The Pregnancy in Polycystic Ovary Syndrome II (PPCOS II) trial: rationale and design of a double-blind randomized trial of clomiphene citrate and letrozole for the treatment of infertility in women with polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University, Hershey, PA, United States
Contemp Clin Trials 33:470-81. 2012..5mg of letrozole a day (×5 days). The primary analysis will use an intent-to-treat approach to examine differences in the live birth rate in the two treatment arms...
Superovulation and multiple birth: in search of kryptoniteRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Fertil Steril 97:793-4. 2012..The contribution of superovulation and ovulation induction to the multiple pregnancy epidemic in the U.S. is substantial. Further understanding of the contributing factors and, most importantly, preventive strategies are needed...
Associations of birthweight and gestational age with reproductive and metabolic phenotypes in women with polycystic ovarian syndrome and their first-degree relativesRichard S Legro
Department of Obstetrics and Gynecology, Penn State University College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 95:789-99. 2010..S. population data, even corrected for gestational age, and has no substantive association with reproductive and metabolic abnormalities in women with PCOS, their female relatives, or their male relatives...
A variant in the fibrillin-3 gene is associated with TGF-β and inhibin B levels in women with polycystic ovary syndromeNazia Raja-Khan
Department of Medicine, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Fertil Steril 94:2916-9. 2010....
A 27-year-old woman with a diagnosis of polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, Penn State College of Medicine, Milton S Hershey Medical Center, Hershey, PA 17033, USA
JAMA 297:509-19. 2007..Treatment options for Ms R, including those that may affect her weight gain, are reviewed and implications for future fertility are discussed...
Surrogate end-points or primary outcomes in clinical trials in women with polycystic ovary syndrome?Richard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, PA, USA
Hum Reprod 19:1697-704. 2004..Future multicentre trials in women with PCOS should focus on primary clinical end-points...
Total testosterone assays in women with polycystic ovary syndrome: precision and correlation with hirsutismRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University, College of Medicine, M S Hershey Medical Center, 500 University Drive, H103, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 95:5305-13. 2010..There is no standardized assay of testosterone in women. Liquid chromatography mass spectrometry (LC/MS) has been proposed as the preferable assay by an Endocrine Society Position Statement...
Detecting insulin resistance in polycystic ovary syndrome: purposes and pitfallsRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Obstet Gynecol Surv 59:141-54. 2004..All obese women with PCOS should be screened for the presence of insulin resistance by looking for other stigmata of the insulin resistance syndrome such as hypertension, dyslipidemia, central obesity, and glucose intolerance...
Insulin resistance in women's health: why it matters and how to identify itRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, M S Hershey Medical Center, 500 University Drive, H103, Hershey, PA 17033, USA
Curr Opin Obstet Gynecol 21:301-5. 2009..To examine the significance of insulin resistance in women's health and review methods for diagnosing it...
The effects of metformin and rosiglitazone, alone and in combination, on the ovary and endometrium in polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, The Pennsylvania State University College of Medicine, Hershey, PA, USA
Am J Obstet Gynecol 196:402.e1-10; discussion 402.e10-1. 2007..To examine the effects of metformin and rosiglitazone, alone and in combination, on endometrial histology and ovarian steroid production...
Polycystic ovaries are common in women with hyperandrogenic chronic anovulation but do not predict metabolic or reproductive phenotypeRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, P O Box 850, 500 University Drive, M S Hershey Medical Center, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 90:2571-9. 2005..These data support the hypothesis that polycystic ovaries are an abnormal finding. However, neither the morphology nor the volume of the ovaries is associated with distinctive metabolic or reproductive phenotypes in women with PCOS...
The Pregnancy in Polycystic Ovary Syndrome study: baseline characteristics of the randomized cohort including racial effectsRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University, Hershey, Pennsylvania 17033, USA
Fertil Steril 86:914-33. 2006..To report the baseline characteristics and racial differences in the polycystic ovary syndrome (PCOS) phenotype from a large multicenter clinical trial (PPCOS)...
Clomiphene, metformin, or both for infertility in the polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, M S Hershey Medical Center, Hershey, PA 17033, USA
N Engl J Med 356:551-66. 2007..The polycystic ovary syndrome is a common cause of infertility. Clomiphene and insulin sensitizers are used alone and in combination to induce ovulation, but it is unknown whether one approach is superior...
Long-term, low-dose flutamide does not cause hepatotoxicity in hyperandrogenic womenRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State College of Medicine, Milton S Hershey Medical Center, Hershey, PA 17033, USA
Nat Clin Pract Endocrinol Metab 2:188-9. 2006
Pregnancy considerations in women with polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, Penn State College of Medicine, Milton S Hershey Medical Center, Hershey, Pennsylvania, USA
Clin Obstet Gynecol 50:295-304. 2007..There are few data to support treatment during pregnancy with metformin in women with PCOS to prevent pregnancy loss or pregnancy complications...
Type 2 diabetes and polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Fertil Steril 86:S16-7. 2006..Additionally there is some evidence to suggest that polycystic ovaries and chronic anovulation per se are risk factors. Identifying glucose intolerance and treating it are important aspects of the care for women with PCOS...
Ovulatory response to treatment of polycystic ovary syndrome is associated with a polymorphism in the STK11 geneRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University, M S Hershey Medical Center, 500 University Drive, H103, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 93:792-800. 2008..Clomiphene and insulin sensitizers such as metformin are used to induce ovulation in polycystic ovary syndrome (PCOS), but the ovulatory response is variable, and the causes of this variation are poorly understood...
Effects of continuous versus cyclical oral contraception: a randomized controlled trialRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, M S Hershey Medical Center, 500 University Drive, H103, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 93:420-9. 2008..Continuous oral contraception may better suppress the ovary and endometrium, lending itself to the treatment of other medical conditions...
A twenty-first century research agenda for polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, M S Hershey Medical Center, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
Best Pract Res Clin Endocrinol Metab 20:331-6. 2006..Overall, this disorder is a prototype for the benefits of translational science and a transdisciplinary approach to understanding the pathophysiology and therapy for anovulatory infertility...
Changes in glucose tolerance over time in women with polycystic ovary syndrome: a controlled studyRichard S Legro
Department of Obstetrics Gynecology, 500 University Drive, Pennsylvania State University College of Medicine, M S Hershey Medical Center, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 90:3236-42. 2005..Our study supports that women with PCOS (especially with NGT) should be periodically rescreened for diabetes due to worsening glucose intolerance over time, but this interval may be over several years and not annually...
Minimal response of circulating lipids in women with polycystic ovary syndrome to improvement in insulin sensitivity with troglitazoneRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 88:5137-44. 2003..Treatment with an insulin-sensitizing agent may have minimal impact on circulating lipids. Further surveillance and treatment of abnormal lipid levels may be necessary in these women...
Oocyte donors as gynecologic teaching associatesR S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, M S Hershey Medical Center, Hershey 17033, USA
Obstet Gynecol 93:147-50. 1999..Oocyte donors were hypothesized as a useful potential pool of gynecologic teaching associates...
Polycystic ovary syndrome: the new milleniumR S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, M S Hershey Medical Center, PO Box 850, Hershey, PA 17033, USA
Mol Cell Endocrinol 184:87-93. 2001..Improving insulin sensitivity has become established as a baseline treatment strategy in PCOS. There are, however, few randomized controlled trials of adequate power to provide an evidence based guide to treatment in PCOS...
Is there a male phenotype in polycystic ovary syndrome families?R S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, USA
J Pediatr Endocrinol Metab 13:1307-9. 2000..Identifying a male phenotype would increase the sample size for genetic analyses of the causative gene. It may also improve the phenotyping of female family members by identifying familial traits that are gender independent...
The genetics of obesity. Lessons for polycystic ovary syndromeR S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey 17033, USA
Ann N Y Acad Sci 900:193-202. 2000..Isolation of PCOS and obesity genes may allow the development of targeted interventions that will lead to effective and safe treatment of both obesity and PCOS...
Rapid maturation of the reproductive axis during perimenarche independent of body compositionR S Legro
Department of Obstetrics and Gynecology, College of Medicine and University Hospitals, Pennsylvania State University, Milton S Hershey Medical Center, Hershey 17033, USA
J Clin Endocrinol Metab 85:1021-5. 2000..These events appear to develop independent of changes in body composition and diet, but may reflect the improved nutrition and socioeconomic status of the late 20th century...
Alterations in low-density lipoprotein and high-density lipoprotein subclasses among Hispanic women with polycystic ovary syndrome: influence of insulin and genetic factorsR S Legro
Department of Obstetrics and Gynecology, University of Southern California School of Medicine, Los Angeles, USA
Fertil Steril 72:990-5. 1999..To examine the influence of hyperandrogenism on low-density lipoprotein (LDL) and high-density lipoprotein (HDL) subclass levels as well as lipoprotein (a) levels in hyperandrogenic women compared with a control group...
Polycystic ovary syndrome. Phenotype to genotypeR S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, USA
Endocrinol Metab Clin North Am 28:379-96. 1999..Linkage analysis should be performed between polymorphic markers spaced at regular genetic intervals, and these familial traits may identify critical regions for further investigation...
Polycystic ovary syndrome and cardiovascular disease: a premature association?Richard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Endocr Rev 24:302-12. 2003....
Insulin resistance in the sisters of women with polycystic ovary syndrome: association with hyperandrogenemia rather than menstrual irregularityRichard S Legro
Division of Women s Health, Department of Medicine, Brigham and Women s Hospital, Boston Massachusetts 02115, USA
J Clin Endocrinol Metab 87:2128-33. 2002..Menstrual irregularity may be related to the magnitude of insulin sensitivity or insulin secretion or to other factors associated with obesity...
Elevated dehydroepiandrosterone sulfate levels as the reproductive phenotype in the brothers of women with polycystic ovary syndromeRichard S Legro
Division of Women s Health, Department of Medicine, Brigham and Women s Hospital, Boston, Massachusetts 02115, USA
J Clin Endocrinol Metab 87:2134-8. 2002..Balding was not increased in the brothers of women with PCOS. We conclude that there is a biochemical reproductive endocrine phenotype in men in PCOS families...
Insulin resistance in polycystic ovary syndrome: treating a phenotype without a genotypeR S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey 17033, USA
Mol Cell Endocrinol 145:103-10. 1998..These initial results with anti-diabetic agents, though promising, need to be confirmed in larger, randomized studies...
Barriers to conducting clinical research in reproductive medicine: United States of AmericaRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Fertil Steril 96:817-9. 2011..A decrease in National Institute of Health funding and an increase regulations are significant barriers in conducting research in the United States of America...
Urinary free cortisol increases in adolescent caucasian females during perimenarcheRichard S Legro
Department of Obstetrics and Gynecology, College of Medicine and University Hospitals, Penn State College of Medicine, The Milton S Hershey Medical Center, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 88:215-9. 2003..3 +/- 3.1 microg/mg per square meter per 24 h) over the age range 12-17 yr represented in this study. An increase in cortisol excretion may be part of normal reproductive maturation...
Detection of insulin resistance and its treatment in adolescents with polycystic ovary syndromeRichard S Legro
Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, PA 17003, USA
J Pediatr Endocrinol Metab 15:1367-78. 2002..The findings of diabetes prevention trials suggest that these interventions may be more efficacious than pharmacological therapy...
Molecular progress in infertility: polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey 17033, USA
Fertil Steril 78:569-76. 2002..To review the evidence that polycystic ovary syndrome is a genetic disease...
Self-selected women with polycystic ovary syndrome are reproductively and metabolically abnormal and undertreatedRichard S Legro
M S Hershey Medical Center, Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Hershey, Pennsylvania 17033, USA
Fertil Steril 78:51-7. 2002..To determine whether self-selected women with polycystic ovary syndrome (PCOS) are abnormal compared with a control population...
Polycystic ovary syndrome. Long term sequelae and managementR S Legro
Department of Obstetrics and Gynaecology, M S Hershey Medical Center Pennsylvania State, University College of Medicine, Hershey, PA, USA
Minerva Ginecol 54:97-114. 2002..Further indications for these agents such as the prevention of pregnancy loss or the conversion to type 2 diabetes still need to be investigated in properly designed studies...
Diabetes prevalence and risk factors in polycystic ovary syndromeR S Legro
Department of Obstetrics and Gynecology, Milton S Hershey Medical Center, Penn State College of Medicine, Hershey, Pennsylvania, USA
Obstet Gynecol Clin North Am 28:99-109. 2001..Further study is necessary to document conversion rates to worsening glucose tolerance over time, as well as the cardiovascular risk associated with glucose intolerance in PCOS...
Troglitazone decreases adrenal androgen levels in women with polycystic ovary syndromeRicardo Azziz
Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, Alabama, USA
Fertil Steril 79:932-7. 2003..To determine whether amelioration of insulin resistance in polycystic ovary syndrome (PCOS) with the insulin sensitizer troglitazone (TGZ) decreases circulating adrenal androgens (AAs), as reflected by DHEAS levels...
Prevalence and predictors of the metabolic syndrome in women with polycystic ovary syndromeDavid A Ehrmann
Department of Medicine, Section of Endocrinology, The University of Chicago, Chicago, Illinois 60637, USA
J Clin Endocrinol Metab 91:48-53. 2006..Polycystic ovary syndrome (PCOS) and the metabolic syndrome have many features in common and may share the same pathogenesis...
Evidence for metabolic and reproductive phenotypes in mothers of women with polycystic ovary syndromeSusan Sam
Division of Endocrinology, Metabolism, and Molecular Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
Proc Natl Acad Sci U S A 103:7030-5. 2006..Obese mothers have a very high prevalence of metabolic syndrome. These findings suggest that both the reproductive and metabolic abnormalities persist with age in PCOS...
Diagnostic criteria in polycystic ovary syndromeRichard S Legro
Department of Obstetrics and Gynecology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
Semin Reprod Med 21:267-75. 2003..There are no simple clinically validated biochemical tests of insulin resistance. Further identification of specific causes, and elimination of the multiple phenocopies that make up PCOS, will ease its diagnosis...
Polycystic ovary syndrome in adolescentsSarah C Kent
Pennsylvania State University College of Medicine, M S Hershey Medical Center, Hershey, 17003, USA
Adolesc Med 13:73-88, vi. 2002....
The Androgen Excess and PCOS Society criteria for the polycystic ovary syndrome: the complete task force reportRicardo Azziz
Cedars Sinai Medical Center, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
Fertil Steril 91:456-88. 2009..To review all available data and recommend a definition for polycystic ovary syndrome (PCOS) based on published peer-reviewed data, whether already in use or not, to guide clinical diagnosis and future research...
The effects of a whole grain-enriched hypocaloric diet on cardiovascular disease risk factors in men and women with metabolic syndromeHeather I Katcher
The Huck Institutes of the Life Sciences, Department of Nutritional Sciences, Core Endocrine Laboratory, Pennsylvania State University, University Park 16802, USA
Am J Clin Nutr 87:79-90. 2008..However, few clinical trials have tested whether incorporating whole grains into a hypocaloric diet increases weight loss and improves CVD risk factors...
Comparison of hormonal and metabolic markers after a high-fat, Western meal versus a low-fat, high-fiber meal in women with polycystic ovary syndromeHeather I Katcher
The Huck Institutes of the Life Sciences, Hershey, Pennsylvania, USA
Fertil Steril 91:1175-82. 2009..To determine the effect of meal composition on postprandial T levels in women with polycystic ovary syndrome (PCOS)...
Hyperandrogenism and hyperinsulinism in children of women with polycystic ovary syndrome: a controlled studySarah C Kent
Department of Obstetrics and Gynecology, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, USA
J Clin Endocrinol Metab 93:1662-9. 2008..Hyperandrogenia and insulin resistance are heritable family traits, likely to cluster in children of polycystic ovary syndrome (PCOS) mothers...
High prevalence of metabolic syndrome in first-degree male relatives of women with polycystic ovary syndrome is related to high rates of obesityAndrea D Coviello
Division of Endocrinology, Boston University School of Medicine, Boston, Massachusetts 02118, USA
J Clin Endocrinol Metab 94:4361-6. 2009..Women with polycystic ovary syndrome (PCOS) have twice the risk for metabolic syndrome (MetS) compared to women from the general population. Mothers and sisters of affected women also have an increased prevalence of MetS...
Predictors of pregnancy in women with polycystic ovary syndromeMary E Rausch
Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
J Clin Endocrinol Metab 94:3458-66. 2009..Polycystic ovary syndrome (PCOS) is the most common cause of anovulatory infertility. The selection of first-line therapies for ovulation induction is empiric...
Femoral bone structural geometry adapts to mechanical loading and is influenced by sex steroids: the Penn State Young Women's Health StudyMoira A Petit
Department of Health Evaluation Sciences, Pennsylvania State University, College of Medicine, Hershey, PA 17033, USA
Bone 35:750-9. 2004..These data suggest that bone adapts its bending strength primarily to mechanical loading (represented by lean mass and sports exercise score) and that sex steroids are associated with bone geometric structure...
Diminished paternity and gonadal function with increasing obesity in menEric M Pauli
Department of Surgery, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA
Fertil Steril 90:346-51. 2008..To examine the relationship of male obesity and reproductive function...
Oral contraceptive use by teenage women does not affect body compositionTom Lloyd
Department of Health Evaluation Sciences, Penn State College of Medicine, The Milton S Hershey Medical Center, Hershey, Pennsylvania17033, USA
Obstet Gynecol 100:235-9. 2002..To assess the effect of oral contraceptive (OC) use during adolescence on body composition parameters and cardiovascular disease risk factors...
Association of obesity with treatment outcomes in ovulatory infertile women undergoing superovulation and intrauterine inseminationWilliam C Dodson
Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, Pennsylvania, USA
Fertil Steril 86:642-6. 2006..To evaluate the association between obesity and the outcome of superovulation and intrauterine insemination (IUI) in infertile ovulatory women...
Erectile dysfunction: does insulin resistance play a part?J C Trussell
Division of Urology, Penn State Milton S Hershey Medical Center and Penn State College of Medicine, Hershey, PA 17033 0850, USA
Fertil Steril 88:771-8. 2007..To review MEDLINE literature for correlations between insulin resistance and erectile dysfunction (ED)...
Epinephrine is associated with both erectile dysfunction and lower urinary tract symptomsJ C Trussell
Division of Urology, Penn State Milton S Hershey Medical Center, 500 University Drive, P O Box 850, Hershey, PA 17033, USA
Fertil Steril 93:837-42. 2010..To determine whether patients with erectile dysfunction (ED) have a higher incidence of insulin resistance (IR) when compared with controls...
Plasma interleukin 6 levels are elevated in polycystic ovary syndrome independently of obesity or sleep apneaAlexandros N Vgontzas
Sleep Research and Treatment Center, Department of Psychiatry H073, Penn State University College of Medicine, Hershey, PA 17033, USA
Metabolism 55:1076-82. 2006..We conclude that IL-6 levels are elevated in obese women with PCOS independently of obesity or sleep apnea and may represent a pathophysiologic link to insulin resistance...
PDE8A genetic variation, polycystic ovary syndrome and androgen levels in womenChen Chen
Department of Obstetrics and Gynecology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA
Mol Hum Reprod 15:459-69. 2009..These findings exclude a significant role for PDE8A as a PCOS candidate gene, and as a Las major determinant of androgen levels in women...
Adolescent Caucasian mothers have reduced adult hip bone densityTom Lloyd
Department of Health Evaluation Sciences, Pennsylvania State College of Medicine, Hershey, Pennsylvania 17033, USA
Fertil Steril 77:136-40. 2002..To determine the long-term effect of full term teen pregnancy on peak hip bone mineral density...
A randomized trial of the effects of two types of short-term hypocaloric diets on weight loss in women with polycystic ovary syndromeKelly Stamets
Department of Obstetrics and Gynecology, Pennsylvania State University, Hershey, Pennsylvania 17033, USA
Fertil Steril 81:630-7. 2004..There was no increased benefit to a high-protein diet. Future diet studies evaluating the ideal composition of a hypocaloric diet in women with PCOS will require a large study population, and will most likely require a multicenter trial...
Effects of race and family history of type 2 diabetes on metabolic status of women with polycystic ovary syndromeDavid A Ehrmann
Department of Medicine, University of Chicago Medical Center, Chicago, Illinois 60637, USA
J Clin Endocrinol Metab 90:66-71. 2005..Finally, the fasting glucose concentration was poorly associated with 2-h glucose concentrations among PCOS women with IGT, suggesting that the fasting glucose concentration is inadequate to predict the presence of IGT in PCOS...
Retinoids and retinol differentially regulate steroid biosynthesis in ovarian theca cells isolated from normal cycling women and women with polycystic ovary syndromeJessica K Wickenheisser
Department of Cellular and Molecular Physiology, Pennsylvania State Hershey College of Medicine, 500 University Drive, C4723, Hershey, Pennsylvania 17033, USA
J Clin Endocrinol Metab 90:4858-65. 2005..CONCLUSIONS: Differential responses to retinol and retinoids in normal and PCOS theca suggest that altered retinoic acid synthesis and action may be involved in augmented CYP17 gene expression and androgen production in PCOS...
Does polycystic ovary syndrome increase the disparity in metabolic syndrome and cardiovascular-related health for African-American women?PONJOLA CONEY
Department of Obstetrics and Gynecology, Meharry Medical College, Nashville, Tennessee, USA
Semin Reprod Med 26:35-8. 2008....
Screening for abnormal glucose tolerance in adolescents with polycystic ovary syndromeMark R Palmert
Division of Endocrinology, Department of Medicine, Children s Hospital, Boston, Massachusetts 02115, USA
J Clin Endocrinol Metab 87:1017-23. 2002..However, as DM may be preventable by lifestyle modifications, we would recommend that adolescents with PCOS undergo periodic screening for abnormal glucose tolerance using 2-h postchallenge plasma glucose levels...
Variation in resistin gene promoter not associated with polycystic ovary syndromeMargrit Urbanek
Department of Genetics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA
Diabetes 52:214-7. 2003..3 and PCOS. Instead, this association is most likely due to a gene or genetic element in this region that has not been identified...
Valproate potentiates androgen biosynthesis in human ovarian theca cellsVelen L Nelson-Degrave
Department of Cellular and Molecular Physiology, Pennsylvania State Hershey College of Medicine, 500 University Drive, C4723, Hershey, PA 17033, USA
Endocrinology 145:799-808. 2004..These studies provide the first biochemical evidence to support a role for VPA in the genesis of polycystic ovary syndrome-like symptoms, and establish a direct link between VPA treatment and increased ovarian androgen biosynthesis...
Family-based analysis of candidate genes for polycystic ovary syndromeKathryn G Ewens
Department of Genetics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA
J Clin Endocrinol Metab 95:2306-15. 2010..D19S884, a polymorphic marker in fibrillin 3 (FBN3), is one of the few association findings that has been replicated in independent sets of families...
Alterations in mitogen-activated protein kinase kinase and extracellular regulated kinase signaling in theca cells contribute to excessive androgen production in polycystic ovary syndromeVelen L Nelson-Degrave
Department of Cellular and Molecular Physiology, Pennsylvania State University College of Medicine 500 University Drive H166, Hershey, Pennsylvania 17033, USA
Mol Endocrinol 19:379-90. 2005..These findings implicate alterations in the MAPK pathway in the pathogenesis of excessive ovarian androgen production in PCOS...
Histological dating of timed endometrial biopsy tissue is not related to fertility statusChristos Coutifaris
Department of Obstetrics and Gynecology, University of Pennsylvania School of Medicine, Philadelphia 19104, USA
Fertil Steril 82:1264-72. 2004..To assess the ability of histological dating to discriminate between women of fertile and infertile couples. The utility of histological dating of endometrium in the evaluation of infertile couples is uncertain...
Absence of secretory endometrium after false-positive home urine luteinizing hormone testingPeter G McGovern
Department of Obstetrics and Gynecology, University of Medicine and Dentistry of New Jersey, Newark 07103, USA
Fertil Steril 82:1273-7. 2004..To examine the proportion of cases with proliferative endometrium on biopsies performed after positive home urine LH testing...
Positions statement: criteria for defining polycystic ovary syndrome as a predominantly hyperandrogenic syndrome: an Androgen Excess Society guidelineRicardo Azziz
Cedars-Sinai Medical Center and the David Geffen School of Medicine at the University of California, Los Angeles, California, USA
J Clin Endocrinol Metab 91:4237-45. 2006..Finally, the task force recognized, and fully expects, that the definition of this syndrome will evolve over time to incorporate new research findings...
Hysterectomy and loss of fertility: implications for women's mental healthPhyllis C Leppert
Department of Obstetrics and Gynecology, Duke University School of Medicine, Durham, NC, USA
J Psychosom Res 63:269-74. 2007..The objective of this study was to assess the percentage of women scheduled for hysterectomy who would have liked to have had a child or more children and associated factors...
Difference in body weight between American and Italian women with polycystic ovary syndrome: influence of the dietEnrico Carmina
Department of Clinical Medicine, University of Palermo, Italy
Hum Reprod 18:2289-93. 2003..It is hypothesized that diet alone does not explain differences in body mass; genetic and lifestyle factors likely contribute. An increased saturated fat intake may worsen the cardiovascular risk profile...
Extended-release metformin does not reduce the clomiphene citrate dose required to induce ovulation in polycystic ovary syndromeNicholas A Cataldo
Stanford University School of Medicine, Stanford, CA 94305, USA
J Clin Endocrinol Metab 93:3124-7. 2008..It has been suggested that metformin in combination with clomiphene can restore ovulation to some clomiphene-resistant anovulators with polycystic ovary syndrome (PCOS)...
Utility of screening for other causes of infertility in women with "known" polycystic ovary syndromePeter G McGovern
Department of Obstetrics, Gynecology and Women s Health, UMDNJ New Jersey Medical School, Newark, New Jersey 07101 1709, USA
Fertil Steril 87:442-4. 2007..Other than failure to demonstrate laboratory evidence of hyperandrogenemia, the most common reasons for subject exclusion were persistent oligospermia and tubal factor infertility...
Polycystic ovary syndromeRobert J Norman
Research Centre for Reproductive Health, School of Paediatrics and Reproductive Health, University of Adelaide, Adelaide, South Australia, Australia
Lancet 370:685-97. 2007..The cause of polycystic ovary syndrome is unknown, but studies suggest a strong genetic component that is affected by gestational environment, lifestyle factors, or both...
Identification of a polycystic ovary syndrome susceptibility variant in fibrillin-3 and association with a metabolic phenotypeMargrit Urbanek
Division of Endocrinology, Metabolism, and Molecular Medicine, 303 East Chicago Avenue, Tarry 15 717, Chicago, Illinois 60611, USA
J Clin Endocrinol Metab 92:4191-8. 2007..We previously mapped a PCOS susceptibility locus to chromosome 19p13.2 near the dinucleotide repeat marker D19S884...
Obesity and the role of gut and adipose hormones in female reproductionGabriella G Gosman
Department of Obstetrics and Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
Hum Reprod Update 12:585-601. 2006....
Evidence for pancreatic beta-cell dysfunction in brothers of women with polycystic ovary syndromeSusan Sam
Division of Endocrinology, Metabolism and Molecular Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
Metabolism 57:84-9. 2008..4 [1.9, 2.7] vs 2.0 [1.8, 2.2], P = .02) in brothers compared with control men. We conclude that brothers of women with PCOS have evidence for pancreatic beta-cell dysfunction and may be at increased risk for type 2 diabetes mellitus...
A comparison of methods and results in recruiting white and black women into reproductive studies: the MMC-PSU cooperative center on reproduction experienceStephanie Sweet
Department of Medical Education Meharry Medical College, Nashville, TN 37208, USA
Contemp Clin Trials 29:478-81. 2008....
Medication adherence and treatment success in the National Institute of Child Health and Human Development-Reproductive Medicine Network's Pregnancy in Polycystic Ovary Syndrome TrialPeter G McGovern
Department of Obstetrics, UMDNJ, New Jersey Medical School, Newark, New Jersey 07101 1709, USA
Fertil Steril 90:1283-6. 2008....
Adolescent girls with polycystic ovary syndrome have an increased risk of the metabolic syndrome associated with increasing androgen levels independent of obesity and insulin resistanceAndrea D Coviello
Division of Endocrinology, Metabolism, and Molecular Medicine, Northwestern University Feinberg School of Medicine, 303 East Chicago Avenue, Tarry Building 15-709, Chicago, IL 60611-3008, USA
J Clin Endocrinol Metab 91:492-7. 2006..4-10.2; P = 0.008). CONCLUSIONS: Adolescent girls with PCOS have a higher prevalence of MBS than the general adolescent population. Hyperandrogenemia is a risk factor for MBS independent of obesity and insulin resistance...
Estimating live birth rates after ovulation induction in polycystic ovary syndrome: sample size calculations for the pregnancy in polycystic ovary syndrome trialEvan R Myers
Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710, United States
Contemp Clin Trials 26:271-80. 2005..The PPCOS trial should definitively answer the question of the relative efficacy of metformin, clomiphene, and combination therapy in the treatment of infertile women with PCOS...
Dyslipidemia and metabolic syndrome in the sisters of women with polycystic ovary syndromeSusan Sam
Division of Endocrinology, Metabolism, and Molecular Medicine, Northwestern University Feinberg School of Medicine, 303 East Chicago Avenue, Tarry Building 15-709, Chicago, Illinois 60611-3008, USA
J Clin Endocrinol Metab 90:4797-802. 2005..001 and P < 0.05, respectively). CONCLUSIONS: Low-density lipoprotein levels are increased in affected sisters of women with PCOS consistent with a heritable trait. The prevalence of metabolic syndrome is increased in affected sisters...
Metabolic phenotype in the brothers of women with polycystic ovary syndromeSusan Sam
Division of Endocrinology, Metabolism and Molecular Medicine, The Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
Diabetes Care 31:1237-41. 2008..Hyperandrogenemia also appears to be the male reproductive phenotype. We performed this study to test the hypothesis that brothers of women with PCOS have metabolic defects similar to those of their proband sisters...
The role of genes and environment in the etiology of PCOSEvanthia Diamanti-Kandarakis
Endocrine Section, First Department of Medicine, University of Athens Medical School, Athens, Greece
Endocrine 30:19-26. 2006..However, the responsible gene at chromosome 19p13.3 remains to be identified. To date, no gene has been identified that causes or contributes substantially to the development of a PCOS phenotype...
Research Grants
- PHENOTYPE AND GENOTYPE IN FAMILIAL POLYCYSTIC OVARY SYNDROMERICHARD LEGRO; Fiscal Year: 2002..We will also attempt to determine whether a male, a premenarchal and/or a post-menopausal phenotype exists in familial PCOS. This study is also being performed at the Hershey Campus. ..
- GENOTYPING FAMILIES OF WOMEN WITH PCOS--POLYCYSTIC OVARY SYNDROMERICHARD LEGRO; Fiscal Year: 2002..We will also attempt to determine whether a male, a premenarchal and/or a post-menopausal phenotype exists in familial PCOS. ..
- ASSESSING SAFETY/EFFICACY OF TROGLITAZONE IN PCOS--POLYCYSTIC OVARY SYNDROMERICHARD LEGRO; Fiscal Year: 2002..Premenopausal women with PCOS between the ages of 18-40 will be studied. ..
- PHENOTYPING KINDRIDS OF FAMILIAL POLYCYSTIC OVARY SYNDROMERICHARD LEGRO; Fiscal Year: 2002..We propose to fully phenotype previously identified kindreds of familial PCOS for clinical, biometric and biochemical abnormalities. ..
- COOPERATIVE MULTICENTER REPRODUCTIVE MEDICINE NETWORKRICHARD LEGRO; Fiscal Year: 2004..This study could have a major impact on infertility in PCOS women while avoiding the risks and costly burden of OHSS and multiple pregnancy. ..
- Effect of Continuous vs. Sequential Oral ContraceptionRICHARD LEGRO; Fiscal Year: 2004..Therefore, the risks and benefits of a CCOCP regimen are an important women's health issue that warrant investigation. ..
- INSULIN RESISTANCE IN PCOS--SEQUELAE AND TREATMENTRICHARD LEGRO; Fiscal Year: 2005..Improving insulin action through diet and exercise, with and without weight loss, will result in lowered circulating insulin levels, lowered androgens and increased ovulatory frequency rate in PCOS women. ..
- A Randomized Trial of Letrozole vs Clomiphene in Infertile Women with PCOSRICHARD LEGRO; Fiscal Year: 2007....
- EXERCISE ON INSULIN TOLERANCE IN WOMEN WITH PCOSRICHARD LEGRO; Fiscal Year: 2000..The purpose of this study is to examine the effects of a low intensity exercise training on insulin action in women with PCOS. Insulin action will be determined using the minimal model FSIGT. ..
- PHENOTYPING KINDRIDS OF FAMILIAL POLYCYSTIC OVARY SYNDROMERICHARD LEGRO; Fiscal Year: 2000..We propose to fully phenotype previously identified kindreds of familial PCOS for clinical, biometric and biochemical abnormalities. ..
- BONE DENSITY IN WOMEN WITH POLYCYSTIC OVARY SYNDROMERICHARD LEGRO; Fiscal Year: 1999..Lumbar and femur bone density measurements will also be obtained. This same tests will be used to calculate total body lean mass and total body fat mass. ..
- EFFECTS OF 3 ORAL CONTRACEPTIVES ON VARIOUS METABOLIC PARAMETERSRICHARD LEGRO; Fiscal Year: 1999..Descriptive statistics will be provided to assist in evaluation of the metabolic effects of the three regimens. ..
- Treatment of Hyperandrogenism vs. Insulin Resistance in Infertile PCOS WomenRichard S Legro; Fiscal Year: 2010..Our goal is to develop safe and effective treatments to improve the treatment of infertility in women with PCOS, but the findings can be generalized to all women with PCOS. ..
