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A switch from oral (2 mg/day) to transdermal (50 microg/day) 17beta-estradiol therapy increases serum insulin-like growth factor-I levels in recombinant human growth hormone (GH)-substituted women with GH deficiency.
Janssen YJ, Helmerhorst F, Frölich M, Roelfsema F. Janssen YJ, et al. Among authors: helmerhorst f. J Clin Endocrinol Metab. 2000 Jan;85(1):464-7. doi: 10.1210/jcem.85.1.6311. J Clin Endocrinol Metab. 2000. PMID: 10634425 Clinical Trial.
The influence of ovarian steroids on hypothalamic-pituitary-adrenal regulation in the female rat.
Carey MP, Deterd CH, de Koning J, Helmerhorst F, de Kloet ER. Carey MP, et al. Among authors: helmerhorst f. J Endocrinol. 1995 Feb;144(2):311-21. doi: 10.1677/joe.0.1440311. J Endocrinol. 1995. PMID: 7706984
Sex hormone-binding globulin as a marker for the thrombotic risk of hormonal contraceptives.
Raps M, Helmerhorst F, Fleischer K, Thomassen S, Rosendaal F, Rosing J, Ballieux B, VAN Vliet H. Raps M, et al. Among authors: helmerhorst f. J Thromb Haemost. 2012 Jun;10(6):992-7. doi: 10.1111/j.1538-7836.2012.04720.x. J Thromb Haemost. 2012. PMID: 22469296
Resistance to APC and SHBG levels during use of a four-phasic oral contraceptive containing dienogest and estradiol valerate: a randomized controlled trial.
Raps M, Rosendaal F, Ballieux B, Rosing J, Thomassen S, Helmerhorst F, van Vliet H. Raps M, et al. Among authors: helmerhorst f. J Thromb Haemost. 2013 May;11(5):855-61. doi: 10.1111/jth.12172. J Thromb Haemost. 2013. PMID: 23410231 Clinical Trial.
Effect of two monophasic oral contraceptives containing gestodene or desogestrel on serum lipoprotein lipid levels.
Leuven JA, de Pagter HA, Dersjant-Roorda MA, Helmerhorst FA, Roelofsen J. Leuven JA, et al. Among authors: helmerhorst fa. Int J Fertil. 1989 Sep;34 Suppl:55-60. Int J Fertil. 1989. PMID: 2576261 Clinical Trial.
Steroids and cytokines in endometrial angiogenesis.
Kapiteijn K, Koolwijk P, Van Der Weiden R, Helmerhorst F, Kooistra T, Van Hinsbergh VW. Kapiteijn K, et al. Among authors: helmerhorst f. Anticancer Res. 2001 Nov-Dec;21(6B):4231-42. Anticancer Res. 2001. PMID: 11908676 Review.
Invasive prenatal diagnosis after intracytoplasmic sperm injection.
van der Westerlaken L, Verburg H, Naaktgeboren N, Breuning M, Helmerhorst F. van der Westerlaken L, et al. Among authors: helmerhorst f. Fertil Steril. 2001 Jun;75(6):1240-1. doi: 10.1016/s0015-0282(01)01800-3. Fertil Steril. 2001. PMID: 11384662 No abstract available.
Genetic variation in the first-pass metabolism of ethinylestradiol, sex hormone binding globulin levels and venous thrombosis risk.
Stegeman BH, Vos HL, Helmerhorst FM, Rosendaal FR, Reitsma PH, van Hylckama Vlieg A. Stegeman BH, et al. Among authors: helmerhorst fm. Eur J Intern Med. 2017 Jul;42:54-60. doi: 10.1016/j.ejim.2017.05.019. Epub 2017 Jun 1. Eur J Intern Med. 2017. PMID: 28579309
Human Extravillous Trophoblasts Penetrate Decidual Veins and Lymphatics before Remodeling Spiral Arteries during Early Pregnancy.
He N, van Iperen L, de Jong D, Szuhai K, Helmerhorst FM, van der Westerlaken LA, Chuva de Sousa Lopes SM. He N, et al. Among authors: helmerhorst fm. PLoS One. 2017 Jan 12;12(1):e0169849. doi: 10.1371/journal.pone.0169849. eCollection 2017. PLoS One. 2017. PMID: 28081266 Free PMC article.
Gonadotropin-releasing hormone agonist against severe aggression in autism.
van der Weiden RM, Helmerhorst FM, Eriksson T. van der Weiden RM, et al. Among authors: helmerhorst fm. BMJ Case Rep. 2016 Sep 21;2016:bcr2016216378. doi: 10.1136/bcr-2016-216378. BMJ Case Rep. 2016. PMID: 27655876 Free PMC article.
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