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https://www.readbyqxmd.com/read/29148520/an-in-vitro-prototype-of-a-porcine-biomimetic-testis-like-cell-culture-system-a-novel-tool-for-the-study-of-reassembled-sertoli-and-leydig-cells
#1
Iva Arato, Giovanni Luca, Francesca Mancuso, Catia Bellucci, Cinzia Lilli, Mario Calvitti, Barbara C Hansen, Domenico Milardi, Giuseppe Grande, Riccardo Calafiore
At present, there is no reliable in vitro assembled prepubertal testis-like biomimetic organ culture system designed to assess the functional effects of human gonadotropins on Sertoli and Leydig cells. Spermatogenesis is regulated by endocrine, paracrine, and juxtacrine factors (testicular cross-talk), mainly orchestrated by gonadotropins such as luteinizing hormone (LH) and follicle-stimulating hormone (FSH) that play a pivotal role by stimulating Leydig and Sertoli cells, respectively. The aim of our study was to set up an in vitro prepubertal porcine bioengineered construct as a new model for experimental studies on reassembled Sertoli and Leydig cells...
November 10, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29144548/anti-m%C3%A3-llerian-hormone-measurement-for-the-diagnosis-of-polycystic-ovary-syndrome
#2
Thozhukat Sathyapalan, Ahmed Al-Qaissi, Eric S Kilpatrick, Soha R Dargham, Stephen L Atkin
OBJECTIVE: Anti-Müllerian hormone (AMH) is derived from the small antral follicles and an elevated level has been suggested to add value to the Rotterdam criteria for the diagnosis of PCOS in cases of diagnostic uncertainty. Therefore, the role of AMH in the classical phenotype of PCOS was defined within a Caucasian population. DESIGN: This was a cross sectional study. PATIENTS: 65 women without PCOS and 110 women with PCOS fulfilling all 3 diagnostic Rotterdam criteria...
November 16, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29142448/expression-of-the-bone-morphogenetic-protein-2-bmp2-in-the-human-cumulus-cells-as-a-biomarker-of-oocytes-and-embryo-quality
#3
Sirin B Demiray, Ozlem Yilmaz, Ege N T Goker, Erol Tavmergen, Nilufer Calimlioglu, Ugur Sezerman, Huseyin O Soykam, Gulperi Oktem
Background: The members of the transforming growth factor-B superfamily, as the bone morphogenetic proteins (BMPs) subfamily and anti-Müllerian hormone (AMH), play a role during follicular development, and the bone morphogenetic protein-2 (BMP2), AMH, and THY1 are expressed in ovaries. Aim: This study was designed to define whether or not the expressions of these proteins in human cumulus cells (CCs) can be used as predictors of the oocyte and embryo competence...
July 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29141509/relative-morphokinetics-assessed-by-time-lapse-imaging-are-altered-in-embryos-from-patients-with-endometriosis
#4
Alexander Freis, Jens Erik Dietrich, Moritz Binder, Verena Holschbach, Thomas Strowitzki, Ariane Germeyer
INTRODUCTION: Time-lapse technology allows almost continuous noninvasive assessment of embryonic development. It was shown previously that relative kinetics defining cleavage synchronicity are better predictors of blastocyst quality than absolute time points. This study aims to compare relative kinetics in embryos from patients with and without endometriosis. METHODS: Time-lapse data were collected retrospectively from 596 patients undergoing infertility treatment for in vitro fertilization from January 2011 to July 2016...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29141508/anti-m%C3%A3-llerian-hormone-amh-may-stall-ovarian-cortex-function-through-modulation-of-hormone-receptors-other-than-the-amh-receptor
#5
Laura Detti, Nicole M Fletcher, Ghassan M Saed, Irene Peregrin-Alvarez, Rebecca A Uhlmann
OBJECTIVE: To test whether recombinant anti-Müllerian hormone (AMH) can inhibit ovarian cortex function by modulating the expression of other hormone receptors. MATERIALS AND METHODS: Pilot experimental study with ovarian cortex obtained from 5 patients. Immediately after explant, the ovarian cortex specimens were divided into 5 equal fragments. One fragment was flash-frozen (uncultured) and 4 were incubated for 48 hours at 37°C in a pH-adjusted gamete buffer medium with increasing AMH concentrations of 0, 5, 25, and 50 ng/mL...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29137935/prostatic-adenocarcinoma-in-the-setting-of-persistent-m%C3%A3-llerian-duct-syndrome-a-case-report
#6
Zulfia McCroskey, Tracie M Koen, David J Lim, Mukul K Divatia, Steven S Shen, Alberto G Ayala, Jae Y Ro
Persistent Müllerian Duct Syndrome (PMDS) is a form of disordered sex development in which rudimentary Müllerian structures are identified in phenotypically and genotypically normal males. It is caused by defects in the anti-Müllerian hormone (AMH) system. Since patients with PMDS present with undescended testes, testosterone production by Leydig cells later in life is often decreased. The role of androgens in prostate cancerogenesis is well known. Cryptorchid testes and diminished testosterone levels in post pubertal life in patients with PMDS play a protective role against prostate cancer, and hence, prostate cancer is a rare event in patients with PMDS...
November 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/29137549/the-impact-of-a-long-acting-oral-sphingosine-1-phosphate-analogue-on-ovarian-aging-in-a-rat-model
#7
Sezcan Mumusoglu, Volkan Turan, Hasan Uckan, Aysegul Suzer, Lale Karakoc Sokmensuer, Gurkan Bozdag
In animal studies, intravenous continuous infusion or peritoneal injection of sphingosine-1-phosphate (S1P) has been shown to decrease chemotherapy- and radiotherapy-induced apoptosis on primordial follicles. Although a long-acting oral form of an S1P analogue (FTY720, fingolimod) has been recently developed and utilized in women with multiple sclerosis, there are no data exploring its ability to avoid spontaneous follicle apoptosis. Thirty 10-month-old female rats were randomly assigned to 3 groups to investigate whether fingolimod would be able to decrease the spontaneous ovarian follicle apoptosis ratio...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29121350/individualized-fsh-dosing-based-on-ovarian-reserve-testing-in-women-starting-ivf-icsi-a-multicentre-trial-and-cost-effectiveness-analysis
#8
Theodora C van Tilborg, Simone C Oudshoorn, Marinus J C Eijkemans, Monique H Mochtar, Ron J T van Golde, Annemieke Hoek, Walter K H Kuchenbecker, Kathrin Fleischer, Jan Peter de Bruin, Henk Groen, Madelon van Wely, Cornelis B Lambalk, Joop S E Laven, Ben Willem J Mol, Frank J M Broekmans, Helen L Torrance
STUDY QUESTION: Is there a difference in live birth rate and/or cost-effectiveness between antral follicle count (AFC)-based individualized FSH dosing or standard FSH dosing in women starting IVF or ICSI treatment? SUMMARY ANSWER: In women initiating IVF/ICSI, AFC-based individualized FSH dosing does not improve live birth rates or reduce costs as compared to a standard FSH dose. WHAT IS KNOWN ALREADY: In IVF or ICSI, ovarian reserve testing is often used to adjust the FSH dose in order to normalize ovarian response and optimize live birth rates...
November 7, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29121326/individualized-versus-standard-fsh-dosing-in-women-starting-ivf-icsi-an-rct-part-1-the-predicted-poor-responder
#9
Theodora C van Tilborg, Helen L Torrance, Simone C Oudshoorn, Marinus J C Eijkemans, Carolien A M Koks, Harold R Verhoeve, Annemiek W Nap, Gabrielle J Scheffer, A Petra Manger, Benedictus C Schoot, Alexander V Sluijmer, Arie Verhoeff, Henk Groen, Joop S E Laven, Ben Willem J Mol, Frank J M Broekmans
STUDY QUESTION: Does an increased FSH dose result in higher cumulative live birth rates in women with a predicted poor ovarian response, apparent from a low antral follicle count (AFC), scheduled for IVF or ICSI? SUMMARY ANSWER: In women with a predicted poor ovarian response (AFC < 11) undergoing IVF/ICSI, an increased FSH dose (225/450 IU/day) does not improve cumulative live birth rates as compared to a standard dose (150 IU/day). WHAT IS KNOWN ALREADY: In women scheduled for IVF/ICSI, an ovarian reserve test (ORT) can predict ovarian response to stimulation...
November 7, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29117576/the-utility-of-anti-m%C3%A3-llerian-hormone-in-the-diagnosis-and-prediction-of-loss-of-ovarian-function-following-chemotherapy-for-early-breast-cancer
#10
R A Anderson, J Mansi, R E Coleman, D J A Adamson, R C F Leonard
AIM: Chemotherapy results in permanent loss of ovarian function in some premenopausal women. Accurate identification in women with hormone-sensitive early breast cancer (eBC) would allow optimisation of subsequent endocrine treatment. We sought to assess whether analysis of anti-Müllerian hormone (AMH) using a sensitive automated assay could identify women who would not regain ovarian function after chemotherapy. METHODS: Data from women in the Ovarian Protection Trial in Premenopausal Breast Cancer Patients (OPTION) trial of goserelin (a gonadotrophin-releasing hormone (GnRH) analogue) for ovarian protection were analysed...
November 5, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/29111311/establishment-and-validation-of-a-score-to-predict-ovarian-response-to-stimulation-in-ivf
#11
Clelia Chalumeau, Jessika Moreau, Nicolas Gatimel, Clementine Cohade, Florence Lesourd, Jean Parinaud, Roger Leandri
This study aimed to integrate clinical and biological parameters in a score able to predict ovarian response to stimulation for IVF in gonadotrophin-releasing hormone (GnRH) antagonist protocols. A progressive discriminant analysis to establish a score including the main clinical and biological parameters predicting ovarian response was performed by retrospectively analysing data from the first ovarian stimulation cycle of 494 patients. The score was validated in a prospectively enrolled, independent set of 257 patients undergoing their first ovarian stimulation cycle...
October 12, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29106305/prediction-of-age-at-menopause-in-women-with-polycystic-ovary-syndrome
#12
S Minooee, F Ramezani Tehrani, M Rahmati, M Ali Mansournia, F Azizi
OBJECTIVE: Considering the role of anti-Müllerian hormone (AMH) in female fertility and its high levels in women with polycystic ovary syndrome (PCOS), the longer reproductive span of these women is in doubt. In the present study, we aimed to improve earlier predictions using a non-linear model to substantiate the question as to whether PCOS women reach menopause later. METHODS: In total, 1162 women aged 20-50 years, comprising 378 PCOS cases and 784 eumenorrheic non-hirsute women, met the eligibility criteria...
November 6, 2017: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/29105518/relationship-between-serum-anti-mullerian-hormone-with-vitamin-d-and-metabolic-syndrome-risk-factors-in-late-reproductive-age-women
#13
Sunmie Kim, Jin Ju Kim, Min-Jeong Kim, Kyung Hee Han, Jung Ryeol Lee, Chang Suk Suh, Young Min Choi, Seok Hyun Kim
The relationship between serum anti-Mullerian hormone (AMH) with vitamin D (25OH-D) and metabolic syndrome (MetS) risk was evaluated in healthy, late reproductive-age (35-49 years) women with regular menstrual cycles. Among the 291 participants (mean age = 42.5 years), most (76.6%, n = 223) were serum vitamin D insufficient (<20 ng/ml). Mean serum levels of AMH and vitamin D were 2.04 ng/mL and 15.9 ng/mL, respectively. There was no correlation between AMH and 25OH-D after adjustment for age (r = -0...
November 5, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29101609/assessment-of-ovarian-function-after-chemotherapy-in-women-with-early-and-locally-advanced-breast-cancer-from-serbia
#14
Emina Malisic, Snezana Susnjar, Jelena Milovanovic, Natasa Todorovic-Rakovic, Vesna Kesic
PURPOSE: Among harmful effects of chemotherapy is the reduction of ovarian function. The aim was to determine the serum levels of FSH, LH, estradiol and AMH after chemotherapy followed by endocrine therapy in breast cancer patients. METHODS: The study included 40 premenopausal hormone receptor-positive breast cancer patients aged 33-50 years. Anthracycline-based chemotherapy received 14/40 while anthracycline-taxane combination received 26/40 of patients, followed by tamoxifen (30/40) or tamoxifen plus goserelin (10/40)...
November 3, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29096268/serum-anti-m%C3%A3-llerian-hormone-dynamics-in-mares-following-immunocontraception-with-anti-zona-pellucida-or-gnrh-vaccines
#15
C J Joonè, M L Schulman, G T Fosgate, A N J Claes, S K Gupta, A E Botha, A Human, H J Bertschinger
Circulating anti-Müllerian hormone concentration (AMH) is positively correlated to the number of small growing follicles in the mare and may reflect ovarian function. Dynamics of AMH during immunocontraception have not previously been investigated. This study aimed to compare serum AMH in mares following treatment with native porcine zona pellucida (pZP), recombinant pZP3 and pZP4 (reZP) or gonadotrophin releasing hormone (GnRH) vaccines, and saline-treated controls. Stored sera collected during two previous studies examining ovarian activity in mares during zona pellucida (ZP) or GnRH immunocontraception were analysed for serum AMH...
October 5, 2017: Theriogenology
https://www.readbyqxmd.com/read/29082109/supporting-the-one-carbon-cycle-restores-ovarian-reserve-in-subfertile-women-absence-of-correlation-with-urinary-bisphenol-a-concentration
#16
Erica Silvestris, Marc Cohen, Dominique Cornet, Laetitia Jacquesson-Fournols, Patrice Clement, Jacques Chouteau, Marc Schneider, Thierry Besnard, Yves Ménézo
Environmental endocrine disrupting chemicals (EDCs), including bisphenol A (BPA), induce DNA methylation errors and oxidative stress, and alter fertility. Animal studies have demonstrated that supporting the one-carbon cycle (1-CC) with appropriate dietary supplements can reduce the effects of EDCs. Anti-Mullerian hormone (AMH), a marker of ovarian functionality, has been tested in subfertile female patients, to control this hypothesis in humans. Fifty-five women with a history of 3-7 years of infertility, with at least two assisted reproductive technology (ART) treatment failures, and low serum levels of AMH were enrolled in the study...
2017: BioResearch Open Access
https://www.readbyqxmd.com/read/29079276/efficacy-of-predictive-models-for-polycystic-ovary-syndrome-using-serum-levels-of-two-antim%C3%A3-llerian-hormone-isoforms-proamh-and-amhn-c
#17
Michael W Pankhurst, Soulmaz Shorakae, Raymond J Rodgers, Helena J Teede, Lisa J Moran
OBJECTIVE: To compare total antimüllerian hormone (AMH), proAMH, AMHN,C, and the ratio of the two forms in predictive models for polycystic ovary syndrome (PCOS) diagnosis. Total AMH consists of proAMH (inactive precursor) and AMHN,C (receptor-competent), but neither isoform has been tested individually for their ability to predict PCOS diagnosis. DESIGN: Cross-sectional study using biobanked samples collected between July 2008 and January 2010. SETTING: Not applicable...
November 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/29077845/direct-actions-of-androgen-estrogen-and-anti-m%C3%A3-llerian-hormone-on-primate-secondary-follicle-development-in-the-absence-of-fsh-in-vitro
#18
T Baba, A Y Ting, O Tkachenko, J Xu, R L Stouffer
STUDY QUESTION: What are effects of androgen, estrogen and anti-Müllerian hormone (AMH), independent of FSH action, on the development and function of primate follicles from the preantral to small antral stage in vitro? SUMMARY ANSWER: Androgen and estrogen, but not AMH, promote follicle survival and growth in vitro, in the absence of FSH. However, their growth-promoting effects are limited to the preantral to early antral stage. WHAT IS KNOWN ALREADY: FSH supports primate preantral follicle development in vitro...
October 25, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29073797/features-of-polycystic-ovary-syndrome-pcos-in-women-with-functional-hypothalamic-amenorrhea-fha-may-be-reversible-with-recovery-of-menstrual-function
#19
Enrico Carmina, Franca Fruzzetti, Roger A Lobo
OBJECTIVE: Since features of polycystic ovary syndrome (PCOS) have been found to be prevalent in women with functional hypothalamic amenorrhea (FHA), we wished to determine what happens to these features after recovery of menstrual function in FHA Design: Prospective cohort study. Twenty-eight women with FHA and 30 age-matched ovulatory controls were studied. METHODS: Twenty-eight women with FHA and 30 age-matched ovulatory controls were studied. We measured serum estradiol, LH, FSH, testosterone, DHEAS, anti-Mullerian hormone (AMH), body mass index, and ovarian morphology on transvaginal ultrasound...
October 27, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29070461/-rictor-mtorc2-regulates-blood-testis-barrier-and-spermatogenesis-in-mice
#20
He-Ling Dong, Hong-Yuan Wu, You Fu, Meng Dai, Xiao-Chun Bai, Hong Wang
OBJECTIVE: To investigate the role of Rictor/mTORC2 in the formation of blood testis barrier (BTB), testicular development, and spermatogenesis. METHODS: Amh Cre positive mice homozygous for rictor loxP with Sertoli cell specific deletion of rictor were obtained by cross breeding Amh Cre mice with rictor loxP mice. The histology of the reproductive organs, seminiferous tubules and epididymis of the transgenic mice was observed with HE staining. The cell subgroups of the germ cells in the seminiferous tubule were detected by flow cytometry with propidium iodide labeling...
October 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
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