W de Ronde

Summary

Affiliation: VU University Medical Center
Country: The Netherlands

Publications

  1. doi request reprint Reduction in 24-hour plasma testosterone levels in subjects who showered 15 or 30 minutes after application of testosterone gel
    Willem de Ronde
    Department of Endocrinology, VU University Medical Center, Amsterdam, The Netherlands
    Pharmacotherapy 31:248-52. 2011
  2. ncbi request reprint Therapeutic uses of aromatase inhibitors in men
    Willem de Ronde
    Department of Endocrinology, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
    Curr Opin Endocrinol Diabetes Obes 14:235-40. 2007
  3. ncbi request reprint [Use of androgenic anabolic steroids before and during the Olympic Games: less but has not died out]
    W de Ronde
    VU Medisch Centrum, Afd Endocrinologie, De Boelelaan 1117, 1081 HV Amsterdam
    Ned Tijdschr Geneeskd 152:1820-4. 2008
  4. ncbi request reprint [Some new aspects of the Klinefelter syndrome]
    L J G Gooren
    VU Medisch Centrum, Afd Endocrinologie, De Boelelaan III7, 108I HV Amsterdam
    Ned Tijdschr Geneeskd 150:2693-6. 2006
  5. ncbi request reprint Calculation of bioavailable and free testosterone in men: a comparison of 5 published algorithms
    Willem de Ronde
    Department of Endocrinology, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
    Clin Chem 52:1777-84. 2006
  6. doi request reprint Hyperandrogenism after transfer of topical testosterone gel: case report and review of published and unpublished studies
    Willem de Ronde
    Department of Endocrinology, VU University Medical Center, De Boelelaan 1117, PO Box 7057, 1007 MB Amsterdam, The Netherlands
    Hum Reprod 24:425-8. 2009
  7. doi request reprint Quality of life is reduced in patients with Klinefelter syndrome on androgen replacement therapy
    Willem de Ronde
    Department of Endocrinology, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
    Eur J Endocrinol 160:465-8. 2009
  8. ncbi request reprint Testosterone gel for the treatment of male hypogonadism
    Willem de Ronde
    VU University Medical Center, Department of Endocrinology, De Boelelaan 1117, PO Box 7057, 1007 MB Amsterdam, The Netherlands
    Expert Opin Biol Ther 9:249-53. 2009
  9. ncbi request reprint A direct approach to the estimation of the origin of oestrogens and androgens in elderly men by comparison with hormone levels in postmenopausal women
    Willem de Ronde
    Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
    Eur J Endocrinol 152:261-8. 2005
  10. ncbi request reprint ['Hungry bone' syndrome, characterized by prolonged symptomatic hypocalcemia, as a complication of the treatment for hyperthyroidism]
    W de Ronde
    afd Inwendige Geneeskunde, sectie Endocrinologie, Erasmus Medisch Centrum, Rotterdam
    Ned Tijdschr Geneeskd 148:231-4. 2004

Collaborators

Detail Information

Publications23

  1. doi request reprint Reduction in 24-hour plasma testosterone levels in subjects who showered 15 or 30 minutes after application of testosterone gel
    Willem de Ronde
    Department of Endocrinology, VU University Medical Center, Amsterdam, The Netherlands
    Pharmacotherapy 31:248-52. 2011
    ..To investigate whether showering, to prevent the involuntary transfer of testosterone to others through skin contact, either 15 or 30 minutes after application of testosterone gel would significantly affect plasma testosterone levels...
  2. ncbi request reprint Therapeutic uses of aromatase inhibitors in men
    Willem de Ronde
    Department of Endocrinology, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
    Curr Opin Endocrinol Diabetes Obes 14:235-40. 2007
    ..Potent aromatase inhibitors offer a convenient way to suppress estrogen production in men. This review aims to present an overview of the potential indications for aromatase inhibitors in men and to discuss results of clinical trials...
  3. ncbi request reprint [Use of androgenic anabolic steroids before and during the Olympic Games: less but has not died out]
    W de Ronde
    VU Medisch Centrum, Afd Endocrinologie, De Boelelaan 1117, 1081 HV Amsterdam
    Ned Tijdschr Geneeskd 152:1820-4. 2008
    ..The performance-enhancing effects of doping and the introduction of intensive doping surveillance are reflected in the decline in performance in several women's track and field events...
  4. ncbi request reprint [Some new aspects of the Klinefelter syndrome]
    L J G Gooren
    VU Medisch Centrum, Afd Endocrinologie, De Boelelaan III7, 108I HV Amsterdam
    Ned Tijdschr Geneeskd 150:2693-6. 2006
    ..New reproductive techniques no longer automatically mean that men with KS will remain infertile. Treatment with testosterone is in principle life-long to prevent osteoporosis and loss of muscle mass and strength...
  5. ncbi request reprint Calculation of bioavailable and free testosterone in men: a comparison of 5 published algorithms
    Willem de Ronde
    Department of Endocrinology, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
    Clin Chem 52:1777-84. 2006
    ..Estimation of serum concentrations of free testosterone (FT) and bioavailable testosterone (bioT) by calculation is an inexpensive and uncomplicated method. We compared results obtained with 5 different algorithms...
  6. doi request reprint Hyperandrogenism after transfer of topical testosterone gel: case report and review of published and unpublished studies
    Willem de Ronde
    Department of Endocrinology, VU University Medical Center, De Boelelaan 1117, PO Box 7057, 1007 MB Amsterdam, The Netherlands
    Hum Reprod 24:425-8. 2009
    ..Thus, the potential of testosterone transfer in gel users should be recognized as a possible side effect of this form of testosterone replacement therapy...
  7. doi request reprint Quality of life is reduced in patients with Klinefelter syndrome on androgen replacement therapy
    Willem de Ronde
    Department of Endocrinology, Vrije Universiteit Medical Center, Amsterdam, The Netherlands
    Eur J Endocrinol 160:465-8. 2009
    ..Klinefelter syndrome (KS) is a genetic disorder, characterized by an XXY karyotype, hypergonadotrophic hypogonadism and infertility, which affects approximately 1 in 700 men. KS has also been associated with neuropsychological alterations...
  8. ncbi request reprint Testosterone gel for the treatment of male hypogonadism
    Willem de Ronde
    VU University Medical Center, Department of Endocrinology, De Boelelaan 1117, PO Box 7057, 1007 MB Amsterdam, The Netherlands
    Expert Opin Biol Ther 9:249-53. 2009
    ..Several modes of testosterone replacement are available including capsules, patches, injections, buccal tablets and gels...
  9. ncbi request reprint A direct approach to the estimation of the origin of oestrogens and androgens in elderly men by comparison with hormone levels in postmenopausal women
    Willem de Ronde
    Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
    Eur J Endocrinol 152:261-8. 2005
    ..From infusion studies with radioactively labelled hormones, we know that oestradiol (E2) and oestrone (E1) are either directly secreted by the testes and adrenal glands or peripherally produced from testicular or adrenal androgens...
  10. ncbi request reprint ['Hungry bone' syndrome, characterized by prolonged symptomatic hypocalcemia, as a complication of the treatment for hyperthyroidism]
    W de Ronde
    afd Inwendige Geneeskunde, sectie Endocrinologie, Erasmus Medisch Centrum, Rotterdam
    Ned Tijdschr Geneeskd 148:231-4. 2004
    ..In this patient, calcium suppletion led to normalisation of the serum calcium level two weeks postoperatively; she was discharged from the hospital in good condition after 3 weeks...
  11. ncbi request reprint [Hormonal contraception in men]
    W de Ronde
    VU Medisch Centrum, De Boelelaan 1117, 1081 HV Amsterdam
    Ned Tijdschr Geneeskd 151:2558-61. 2007
    ..It is not to be expected that male hormonal contraception will become a serious alternative to the already existing female equivalent during the coming 5 years...
  12. doi request reprint Serum testosterone levels measured by isotope dilution-liquid chromatography-tandem mass spectrometry in postmenopausal women versus those in women who underwent bilateral oophorectomy
    Hong N Bui
    Department of Clinical Chemistry, VU University Medical Center, PO Box 7057, Amsterdam 1007MB, The Netherlands
    Ann Clin Biochem 47:248-52. 2010
    ....
  13. ncbi request reprint In men, peripheral estradiol levels directly reflect the action of estrogens at the hypothalamo-pituitary level to inhibit gonadotropin secretion
    Garrett Raven
    Department of Endocrinology, VU University Medical Center, De Boelelaan 1117, P O Box 7057, 1007 MB Amsterdam, The Netherlands
    J Clin Endocrinol Metab 91:3324-8. 2006
    ..Estradiol inhibits gonadotropin release in men by an action at the hypothalamus and pituitary. Because of the tissue-specific regulation of aromatase, peripheral estradiol levels may not reflect brain estradiol concentrations...
  14. ncbi request reprint Associations of sex-hormone-binding globulin (SHBG) with non-SHBG-bound levels of testosterone and estradiol in independently living men
    Willem de Ronde
    Department of Internal Medicine, Erasmus Medical Center, PO Box 1738, 3000 DR Rotterdam, The Netherlands
    J Clin Endocrinol Metab 90:157-62. 2005
    ..Therefore, we conclude that in eugonadal men, higher SHBG levels are associated with lower levels of non-SHBG-E2 but slightly higher levels of non-SHBG-T. This means that SHBG cannot be regarded as an estrogen amplifier in eugonadal men...
  15. ncbi request reprint The importance of oestrogens in males
    Willem de Ronde
    Department of Internal Medicine, University Hospital Dijkzigt, Rotterdam, The Netherlands
    Clin Endocrinol (Oxf) 58:529-42. 2003
  16. ncbi request reprint Serum levels of sex hormone-binding globulin (SHBG) are not associated with lower levels of non-SHBG-bound testosterone in male newborns and healthy adult men
    Willem de Ronde
    Department of Internal Medicine, Erasmus Medical Center, 3000 DR Rotterdam, The Netherlands
    Clin Endocrinol (Oxf) 62:498-503. 2005
    ..In in vitro experiments increased levels of SHBG will be associated with decreased levels of non-SHBG bound testosterone (non-SHBG-T). However, in vivo SHBG can alter both production and clearance rates and thus plasma levels of T...
  17. ncbi request reprint Effect of testosterone administration on serum and urine kallikrein concentrations in female-to-male transsexuals
    Margrita H Slagter
    Department of Endocrinology, Vrije Universiteit University Medical Centre, Amsterdam, The Netherlands, and Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, Toronto, ON, Canada
    Clin Chem 52:1546-51. 2006
    ..To gain insight into in vivo kallikrein regulation we measured kallikrein concentrations in serum and urinary tissue in female-to-male transsexuals before and after testosterone administration...
  18. doi request reprint In young men, a moderate inhibition of testosterone synthesis capacity is only partly compensated by increased activity of the pituitary and the hypothalamus
    Jorn Woerdeman
    Department of Endocrinology, VU University Medical Center, Amsterdam, The Netherlands
    Clin Endocrinol (Oxf) 72:76-80. 2010
    ..The question arises as to whether such a compensation is complete or that decreased T synthesis may result in a lower plasma T concentration...
  19. ncbi request reprint Endogenous sex hormones, sex hormone-binding globulin, and the risk of incident vertebral fractures in elderly men and women: the Rotterdam Study
    Hermien W Goderie-Plomp
    Department of Internal Medicine, Erasmus Medical Center, P O Box 1738, 3000 DR Rotterdam, The Netherlands
    J Clin Endocrinol Metab 89:3261-9. 2004
    ..For men, no clear association was found, possibly due to insufficient power. No clear association between testosterone and incident vertebral fractures was observed in either men or women...
  20. ncbi request reprint The association of sex hormone levels with quantitative ultrasound, bone mineral density, bone turnover and osteoporotic fractures in older men and women
    Natalia O Kuchuk
    Department of Endocrinology, VU University Medical Centre, 1007 MB Amsterdam, The Netherlands
    Clin Endocrinol (Oxf) 67:295-303. 2007
    ..Our objective was to examine whether serum oestradiol (E2) and testosterone (T) are associated with quantitative ultrasound (QUS), bone mineral density (BMD), bone turnover markers and fracture incidence...
  21. doi request reprint Therapeutic effects of anabolic androgenic steroids on chronic diseases associated with muscle wasting
    Jorn Woerdeman
    VU University Medical Center, Department of Endocrinology, De Boelelaan 1117, PO Box 7057, 1007 MB Amsterdam, The Netherlands
    Expert Opin Investig Drugs 20:87-97. 2011
    ..Anabolic androgenic steroids have been demonstrated to increase fat-free mass, muscle mass and strength in healthy men and women without major adverse events and therefore could be beneficial in these conditions...
  22. ncbi request reprint Serum and urine tissue kallikrein concentrations in male-to-female transsexuals treated with antiandrogens and estrogens
    Margrita H Slagter
    Department of Endocrinology, VU University Medical Centre, Amsterdam, The Netherlands
    Clin Chem 52:1356-65. 2006
    ..Our purpose was to examine serum and urinary tissue kallikrein concentration changes in male-to-female transsexuals before and after treatment with antiandrogens and estrogens...
  23. doi request reprint Low free testosterone levels are associated with prevalence and incidence of depressive symptoms in older men
    Devina Joshi
    EMGO Institute, VU University Medical Center, Amsterdam, The Netherlands
    Clin Endocrinol (Oxf) 72:232-40. 2010
    ..Our study analyses the cross-sectional association of testosterone levels with depressive symptoms and its prospective association with the development of incident depressive symptoms...