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Inhibin B

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https://www.readbyqxmd.com/read/29471425/foxl2c134w-induced-cyp19-expression-via-cooperation-with-smad3-in-hgrc1-cells
#1
Martina Belli, Nahoko Iwata, Tomoko Nakamura, Akira Iwase, Dwayne Stupack, Shunichi Shimasaki
Germline knockout studies in female mice demonstrated an essential role for FOXL2 in early follicle development, while an inducible granulosa cell (GC) specific deletion of Foxl2 in adults has shown ovary-to-testis somatic sex reprogramming. In women, over 120 different germline mutations in the FOXL2 gene have been shown to cause blepharophimosis/ptosis/epicantus inversus syndrome associated with or without primary ovarian insufficiency. By contrast, a single somatic mutation (FOXL2C134W) accounts for almost all adult-type GC tumors (aGCTs)...
February 19, 2018: Endocrinology
https://www.readbyqxmd.com/read/29456864/curative-gnrha-treatment-has-an-unexpected-repressive-effect-on-sertoli-cell-specific-genes
#2
Katharina Gegenschatz-Schmid, Gilvydas Verkauskas, Philippe Demougin, Vytautas Bilius, Darius Dasevicius, Michael B Stadler, Faruk Hadziselimovic
Background: Follicle stimulating hormone and testosterone stimulate Sertoli cells to support germ cell function and differentiation. During mini-puberty, when gonadotropin (GnRH) stimulates increases in plasma luteinizing hormone (LH) and testosterone levels, gonocytes are transformed into Ad spermatogonia. In cryptorchidism, impaired gonadotropin secretion during mini-puberty results in insufficient LH and testosterone secretion, impaired gonocyte transition to Ad spermatogonia, and perturbed Sertoli cell proliferation...
2018: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/29449081/urinary-concentrations-of-benzophenone-type-ultra-violet-light-filters-and-reproductive-parameters-in-young-men
#3
Evdochia Adoamnei, Jaime Mendiola, Miriam Moñino-García, Fernando Vela-Soria, Luz M Iribarne-Durán, Mariana F Fernández, Nicolás Olea, Niels Jørgensen, Shanna H Swan, Alberto M Torres-Cantero
BACKGROUND: Benzophenone (BP)-type ultraviolet (UV) light filters are chemicals frequently added to personal care products, insect repellents, sunscreens, and beverage and food packaging to diminish the harmful effects of UV sunlight on human skin or foodstuffs. BP-type UV filters have shown negative effects on male reproduction function in in vitro and animal models, but human epidemiologic studies are limited. The goal of this study was to examine associations between urinary concentrations of BP-type UV filters and semen quality and reproductive hormone levels...
February 9, 2018: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/29446833/body-fat-content-fat-distribution-and-adipocytokine-production-and-their-correlation-with-fertility-markers-in-young-adult-men-and-women-conceived-by-icsi
#4
F Belva, J De Schepper, M Roelants, H Tournaye, M Bonduelle, S Provyn
OBJECTIVE: Differences in body fat content during childhood and adolescence have been described in offspring conceived by In Vitro Fertilisation (IVF) and Intracytoplasmic Sperm Injection (ICSI). However, data on body fat and its distribution as well as on adipocytokine production in young adults conceived by ICSI are non-existent. We investigated if young adult men and women conceived by ICSI have a normal body fat patterning and adipocytokine production. DESIGN: Cohort study...
February 15, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29420188/human-3beta-hydroxysteroid-dehydrogenase-deficiency-associated-with-normal-spermatic-numeration-despite-a-severe-enzyme-deficit
#5
Bruno Donadille, Muriel Houang, Irene Netchine, Jean-Pierre Siffroi, Sophie Christin-Maitre
Human 3 beta-hydroxysteroid dehydrogenase deficiency (3b-HSD) is a very rare form of congenital adrenal hyperplasia resulting from HSD3B2 gene mutations. Its estimated prevalence is less than 1/1,000,000 male neonates. It leads to steroidogenesis impairment in both adrenals and gonads. Few data are available on adult testicular function in such patients. Therefore, we evaluated gonadal axis and testicular function in a 46,XY adult patient, carrying a HSD3B2 mutation. The patient presented at birth with neonatal salt wasting syndrome, a micropenis, perineal hypospadias and intrascrotal testes...
February 2, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29409132/leydig-cell-insufficiency-in-hypospermatogenesis-a-paracrine-effect-of-activin-inhibin-signaling
#6
REVIEW
S J Winters, J P Moore, B J Clark
Clinical findings and a variety of experimental models indicate that Leydig cell dysfunction accompanies damage to the seminiferous tubules with increasing severity. Most studies support the idea that intratesticular signaling from the seminiferous tubules to Leydig cells regulates steroidogenesis, which is disrupted when hypospermatogenesis occurs. Sertoli cells seem to play a pivotal role in this process. In this review, we summarize relevant clinical and experimental observations and present evidence to support the hypothesis that testicular activin signaling and its regulation by testicular inhibin may link seminiferous tubular dysfunction to reduced testosterone biosynthesis...
February 6, 2018: Andrology
https://www.readbyqxmd.com/read/29408984/postnatal-changes-in-testicular-position-are-associated-with-igf-i-and-function-of-sertoli-and-leydig-cells
#7
Jaakko J Koskenniemi, Helena E Virtanen, Christine Wohlfahrt-Veje, Eliisa Löyttyniemi, Niels E Skakkebaek, Anders Juul, Anna-Maria Andersson, Katharina M Main, Jorma Toppari
Context: Despite clinical guidelines calling for repetitive examination of testicular position during childhood, little is known of normal changes in testicular position during childhood, let alone factors that control it. Objective: To assess changes in, and factors associated with testicular position during childhood. Design: Testicular position (the distance from the pubic bone to the upper pole of the testes) at birth, 3 months, 18 months, 36 months, 7 years and reproductive hormones at three months were measured...
February 1, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29378377/anti-mullerian-hormone-and-inhibin-b-levels-in-obese-boys-relations-with-cardiovascular-risk-factors
#8
Muammer Buyukinan, Muge Atar, Ozgur Pirgon, Huseyin Kurku, S Sami Erdem, Isa Deniz
OBJECTIVE: Obesity may reduce sertoli cell functions in men. The aim of the study was to investigate antimullerian hormone (AMH) and inhibin B levels (sertoli cell markers) in obese boys and their relations to cardiovascular risk factors such as insulin sensitivity index, aortic intima media thickness (aIMT) and high sensitive c-reactive protein (hsCRP). PATIENTS, METHODS: 121 obese and 38 healthy lean adolescents were included in the study. Serum AMH, inhibin B, gonadotropins, total testosterone, lipids, hsCRP, glucose and insulin levels were detected and analyzed...
January 29, 2018: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29371337/endocrine-and-metabolic-evaluation-of-classic-klinefelter-syndrome-and-high-grade-aneuploidies-of-sexual-chromosomes-with-male-phenotype-are-they-different-clinical-conditions
#9
Matteo Spaziani, Mileno Benedetta, Fabio Rossi, Simona Granato, Natascia Tahani, Antonella Anzuini, Andrea Lenzi, Antonio F Radicioni
OBJECTIVE: Klinefelter Syndrome (KS) is the most common sex chromosome aneuploidy in males. As well as classic KS, less frequent higher-grade aneuploidies (HGAs) are also possible. While KS and HGAs both involve testicular dysgenesis with hypergonadotropic hypogonadism, they differ in many clinical features. The aim of this study was to investigate the endocrinal and metabolic differences between KS and HGAs. DESIGN: Cross-sectional, case-control study. METHODS: 88 patients with KS, 24 with an HGA and 60 healthy controls...
January 25, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29354933/-clinical-therapeutic-effects-of-acupuncture-combined-with-chinese-herbal-medicine-on-infertility-of-polycystic-ovary-syndrome-in-the-patients-with-ovulation-induction-with-letrozole
#10
Yan Yin, Yingchun Zhang, Hua Zhang, Duosheng Jiang, Guirong Guo
OBJECTIVE: To evaluate the clinical therapeutic effects and safety on infertility of polycystic ovary syndrome (PCOS) in the patients with ovulation induction with letrozole in the treatment with the formula for regulating menstruation and removing phlegm and electroacupuncture (EA). METHODS: A total of 120 patients of PCOS infertility were randomized into 3 groups, 40 cases in each one. In the group A, diane-35 was prescribed for oral administration (one tablet a day since the 5th day of menstruation, continuously for 21 days)...
January 12, 2018: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29334660/global-proteomic-analysis-of-water-buffalo-bubalus-bubalis-saliva-at-different-stages-of-estrous-cycle-using-high-throughput-mass-spectrometry
#11
N G Shashikumar, R K Baithalu, S Bathla, S A Ali, P Rawat, A Kumaresan, S Kumar, B R Maharana, G Singh, D S Puneeth Kumar, S K Singh, S S Lathwal, L Jaiswal, T K Mohanty, A K Mohanty
Accurate and efficient detection of estrus is one of the major constraints for exploitation of the production potential of buffalo owing to its poor manifestation of estrus signs, seasonal differences in expression and higher incidences of silent estrus (29%). The current study focused on identification of estrus specific candidate proteins in saliva of buffaloes. Estrus was detected based on behavioral signs in response to the teaser and changes in reproductive organs and confirmed by per-rectal examination, trans-rectal USG of reproductive organs, cervico-vaginal mucus characteristics and blood serum progesterone estimation...
January 9, 2018: Theriogenology
https://www.readbyqxmd.com/read/29306929/comparison-between-two-inhibin-b-elisa-assays-in-46-xy-testicular-disorders-of-sex-development-dsd-with-normal-testosterone-secretion
#12
Guilherme Guaragna-Filho, Antônio Ramos Calixto, Georgette Beatriz De Paula, Laurione Cândido De Oliveira, André Moreno Morcillo, Maricilda Palandi De Mello, Andrea Trevas Maciel-Guerra, Gil Guerra-Junior
BACKGROUND: Inhibin B is a hormone produced by the Sertoli cells that can provide important information for the investigation of disorders of sex development (DSD) with 46,XY karyotype. The aim of this study is to compare two enzyme-linked immunosorbent assay (ELISA) assays for dosage of serum inhibin B in patients with 46,XY DSD with normal testosterone secretion. METHODS: Twenty-nine patients with 46,XY DSD and normal testosterone secretion (partial androgen insensitivity syndrome [PAIS] [n=8]; 5α-reductase deficiency [n=7] and idiopathic 46,XY DSD [n=14]) were included...
January 8, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29273543/acute-effects-of-lead-on-porcine-neonatal-sertoli-cells-in-vitro
#13
Francesca Mancuso, Iva Arato, Cinzia Lilli, Catia Bellucci, Maria Bodo, Mario Calvitti, Maria Chiara Aglietti, Marco dell'Omo, Claudio Nastruzzi, Riccardo Calafiore, Giovanni Luca, Lorella Marinucci
Environmental pollution is one of the main factors responsible for reducing fertility in males. Lead is one of the major heavy metal contaminants that impairs several organs; it preferentially accumulates in male reproductive organs and alters sperm quality both in vivo and in vitro. However, the underlying mechanisms remain unclear. Sertoli cells (SCs) provide structural and physiological support to spermatogenic cells within seminiferous tubules. Therefore, changes in SCs affect the developing germ cells and alter spermatogenesis...
December 19, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29248921/impact-of-kidney-transplantation-on-reproductive-hormone-levels-in-males-a-longitudinal-study
#14
Dag Eckersten, Aleksander Giwercman, Mats Pihlsgård, Laila Bruun, Anders Christensson
BACKGROUND/AIMS: Male patients with end-stage renal disease suffer from sexual disturbances and infertility. Disturbances in the hypothalamic-pituitary-gonadal axis are one of the causes of this. Decreased testosterone synthesis in Leydig cells of the testes and hyperprolactinemia are common. Kidney transplantation, unlike hemodialysis, normalizes these changes. However, how kidney transplantation affects Sertoli cell function is poorly understood. This study is aimed at investigating the changes in fertility-related hormones in men before, during, and after renal transplantation...
December 14, 2017: Nephron
https://www.readbyqxmd.com/read/29231589/-effects-of-moxibustion-at-shenshu-bl-23-on-level-of-sex-hormones-and-amh-in-sub-health-peri-menopausal-women
#15
Jie Shen, Meihong Shen, Zhongren Li, Rongli Zhang, Xia Li, Bingwei Ai
OBJECTIVE: To compare the effects between moxibustion at Shenshu (BL 23) and oral administration of Vitamin E on quality of life and mechanism in sub-health perimenopausal women, aiming to provide clinical evidence of moxibustion for health care of sub-health female. METHODS: Sixty participants were randomly divided into a moxibustion group and a medication group, 30 cases in each one. The volunteers in the moxibustion group were treated with mild moxibustion at bilateral Shenshu (BL 23) for 15 min, once a day; five treatments were considered as a course of treatment, and totally 4 courses were given with an interval of 2 days between courses...
April 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29228129/prenatal-exposure-to-di-2-ethylhexyl-phthalate-causes-long-term-transgenerational-effects-on-female-reproduction-in-mice
#16
Emily Brehm, Saniya Rattan, Liying Gao, Jodi A Flaws
Di(2-ethylhexyl) phthalate (DEHP) is a plasticizer in many consumer products. Although DEHP is a known endocrine disruptor, little is known about the effects of DEHP exposure on female reproduction. Thus, this study tested the hypothesis that prenatal DEHP exposure affects follicle numbers, estrous cyclicity, and hormone levels in multiple generations of mice. Pregnant CD-1 mice were orally dosed with corn oil (vehicle control) or DEHP (20 and 200 µg/kg/day, and 500 and 750 mg/kg/day) from gestation day 10...
December 7, 2017: Endocrinology
https://www.readbyqxmd.com/read/29227911/inhibin-a-and-inhibin-b-in-cyclic-and-pregnant-mares-and-mares-with-granulosa-theca-cell-tumors-physiological-and-diagnostic-implications
#17
A J Conley, E L Scholtz, G Dujovne, R F Cotterman, E L Legacki, R C Uliani, M A Alvarenga, B A Ball, B Kalra, G V Savjani, A Kumar
Studies in mares have examined serum inhibin concentrations using immuno-assays unable to distinguish dimeric inhibin-A from inhibin-B isoforms. Inhibin-A and inhibin-B immuno-assays were used to investigate concentrations in cyclic mares, young and old (6 vs 19 years old, respectively) mares following hemi-ovariectomy, mares during pregnancy and in mares with confirmed granulosa cell tumors (GCTs). Mares with inter-ovulatory intervals of 26 days had ovulatory peaks of inhibin-A averaging 80 pg/mL with a mid-cycle nadir of 5 pg/mL...
December 7, 2017: Theriogenology
https://www.readbyqxmd.com/read/29222425/polymorphisms-in-jmjd1c-are-associated-with-pubertal-onset-in-boys-and-reproductive-function-in-men
#18
Nina Mørup, Alexander Siegfried Busch, Anne Kirstine Bang, Loa Nordkap, John E Nielsen, Ewa Rajpert-De Meyts, Anders Juul, Niels Jørgensen, Kristian Almstrup
JMJD1C, a member of the Jumonji-domain containing histone demethylases protein family, has been associated with levels of sex-hormone binding globulin (SHBG) and testosterone in men, and knock-out rodent models show age-dependent infertility. The objective of this study was to investigate whether single nucleotide polymorphisms (SNPs) nearby JMJD1C are associated with pubertal onset in boys and with male reproduction. 671 peri-pubertal boys, 1,027 young men, 315 fertile men, and 252 infertile men were genotyped for two JMJD1C SNPs (rs7910927 and rs10822184)...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29198592/can-tangier-disease-cause-male-infertility-a-case-report-and-an-overview-on-genetic-causes-of-male-infertility-and-hormonal-axis-involved
#19
Laura Stocchi, Emiliano Giardina, Luigia Varriale, Annalisa Sechi, Andrea Vagnini, Gianni Parri, Massimo Valentini, Maria Capalbo
Tangier disease is an autosomal recessive disorder caused by mutations in the ABCA1 gene and characterized by the accumulation of cholesteryl ester in various tissues and a near absence of high-density lipoprotein. The subject in this investigation was a 36-year-old Italian man with Tangier disease. He and his wife had come to the In Vitro Fertilization Unit, Pesaro Hospital (Azienda Ospedaliera Ospedali Riuniti Marche Nord) seeking help regarding fertility issues. The man was diagnosed with severe oligoasthenoteratozoospermia...
November 26, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29179076/urinary-concentrations-of-parabens-and-reproductive-parameters-in-young-men
#20
Evdochia Adoamnei, Jaime Mendiola, Miriam Moñino-García, Fernando Vela-Soria, Luz M Iribarne-Durán, Mariana F Fernández, Nicolás Olea, Niels Jørgensen, Shanna H Swan, Alberto M Torres-Cantero
Parabens are a group of alkyl esters of p-hydroxybenzoic acid that are commonly added to personal care products, cosmetics, pharmaceuticals and beverage and food processing as antimicrobial preservatives. Parabens have been reported to show estrogenic effects and affect male reproduction function in animal models, but human epidemiologic studies are still scarce. The objective of this study was to examine associations between urinary concentrations of parabens and semen quality and reproductive hormone levels...
November 24, 2017: Science of the Total Environment
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