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Patricia Lacourt, Julio Soto, Hana Rumié, Roger Gejman, Juan Carlos Pattillo, Cristián García, Hernán García
INTRODUCTION: Juvenile granulosa cell tumors (JGCT) are very rare, especially in infants under the age of one. The most frequent presentation is with signs of precocious puberty. OBJECTIVE: Present an in fant with peripheral precocious puberty, diagnosis of JGCT and follow up. CLINICAL CASE: 10-month-old female infant with thelarche, pubic hair and palpable abdominal mass accompanied with eleva ted levels of estradiol, very low gonadotrophins and images that show a very large ovarian mass...
December 2017: Revista Chilena de Pediatría
Priyanka Singh, Laura M Jenkins, Ben Horst, Victoria Alers, Shrikant Pradhan, Prabhjot Kaur, Tapasya Srivastava, Nadine Hempel, Balázs Győrffy, Eugenia V Broude, Nam Y Lee, Karthikeyan Mythreye
Inhibin is a heterodimeric TGF-β family ligand that is expressed in many cancers and is a selective biomarker for ovarian cancers, however its tumor-specific functions remain unknown. Here we demonstrate that the α subunit of Inhibin (INHA), which is critical for the functionality of dimeric Inhibin A/B, correlates with microvessel density (MVD) in human ovarian tissues and xenografts and is predictive of poor clinical outcomes in multiple cancers. We demonstrate that Inhibin regulated angiogenesis is necessary for metastasis...
March 13, 2018: Cancer Research
C L Depoix, F Haegemann, F Debiève, C Hubinont
STUDY QUESTION: Is 8% O2 a better percentage of atmospheric oxygen for long-term cultures of human primary term cytotrophoblasts than the conventional 21% O2 traditionally used in cell culture? SUMMARY ANSWER: Human primary term cytotrophoblasts are able to differentiate into syncytiotrophoblasts under both atmospheric oxygen levels. WHAT IS KNOWN ALREADY: Cell culture is traditionally done under 21% O2, which is equal to a pO2 of ~160 mm Hg...
March 9, 2018: Molecular Human Reproduction
Mikkel Andreassen, Anders Juul, Ulla Feldt-Rasmussen, Niels Joergensen
Gonadotropins (luteinizing hormone (LH) and follicle stimulating hormone (FSH)) are released from the pituitary gland and stimulate Leydig cells to produce testosterone and initiates spermatogenesis. Little is known about how and when the deterioration of semen quality occurs in patients with adult onset gonadotropin insufficiency Design and methods: A retrospective study comprising 20 testosterone deficient men (median age 29 years) with acquired pituitary disease, who delivered semen for cryopreservation before initiation of testosterone therapy...
March 7, 2018: Endocrine Connections
Jabbar Abbas Ahmed Al-Saaidi, Khalisa Khadim Khudair, Sura Safe Aubaes Al-Kafaji
Objective: The present study was conducted to investigate the impacts of active and passive immunization against synthetic inhibin and steroid-free bovine follicular fluid, respectively, on reproductive fecundity out of breeding season in Iraqi Awassi ewes. Methods: Follicular fluid was aspired from mature bovine follicles, treated with activated charcoal, and used for immunization of male rabbits for obtaining steroid free bovine follicular fluid (SFBFF) antiserum...
March 2, 2018: Asian-Australasian Journal of Animal Sciences
Anne Marie Z Jukic, Donna D Baird, Allen J Wilcox, Clarice R Weinberg, Anne Z Steiner
OBJECTIVE: The aim of the study was to examine the associations between 25-hydroxyvitamin D (25(OH)D) and biomarkers of ovarian reserve in a large community-based sample of women. METHODS: In 2010 to 2016, women aged 30 to 44 years without any known fertility problems were recruited from the Chapel Hill, NC area for a prospective time-to-pregnancy cohort study. At enrollment 561 women provided a blood sample that was used to measure 25(OH)D, anti-Müllerian hormone (AMH), follicle-stimulating hormone, and inhibin-B...
March 5, 2018: Menopause: the Journal of the North American Menopause Society
Hamid Rashtbari, Mazdak Razi, Hassan Hassani-Bafrani, Hamed Najaran
BACKGROUND: Varicocele is present in 10-20% of the male infertile population. PURPOSE: Present study was done to demonstrate the reinforcing effect of berberine (BBR), as an antioxidant and anti-inflammatory agent, on Sertoli cells-related niche and spermatogonial stem cells (SSCs) self-renewal in experimentally-induced VCL condition. STUDY DESIGN: 50 mature male Wistar rats were divided into control, control-sham, non-treated VCL-induced, 50 mg kg-1 and 100 mg kg-1 BBR-treated VCL-induced groups...
February 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
A Karatug Kacar, S Gezginci-Oktayoglu, S Bolkent
Insulinoma INS-1 cell line is a pancreatic beta cell tumor which is characterized with high insulin content and secretion in response to increasing glucose levels. 4-Methylcatechol (4-MC) is a metabolite of quercetin, which is known as a potential drug for inhibition of tumorigenesis. The aim of this study was to determine the applying doses of 4-methylcatechol (4-MC) for triggening cell death and decreasing the cell function of rat insulinoma INS-1 beta cells. The rate of apoptosis and the amount of insulin in the cell and the secretions were determined by the ELISA method...
January 1, 2018: Human & Experimental Toxicology
Yao-Yao Du, Na Guo, Yi-Xin Wang, Xiang Hua, Tao-Ran Deng, Xue-Mei Teng, Yang-Cheng Yao, Yu-Feng Li
BACKGROUND: Phthalates, a class of endocrine disruptors, have been demonstrated to accelerate loss of ovarian follicle pool via disrupting folliculogenesis, and lead to diminished ovarian reserve. However, human data are limited. Here, we aimed to examine whether urinary phthalate metabolites are correlated with markers of ovarian reserve among women attending a fertility clinic. METHODS: We measured eight phthalate metabolites in urine samples collected from 415 women seeking infertility treatment at the Reproductive Medicine Center of Tongji Hospital, Wuhan, China...
February 23, 2018: Reproductive Health
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
Emrah Altindis, Weikang Cai, Masaji Sakaguchi, Fa Zhang, Wang GuoXiao, Fa Liu, Pierre De Meyts, Vasily Gelfanov, Hui Pan, Richard DiMarchi, C Ronald Kahn
Viruses are the most abundant biological entities and carry a wide variety of genetic material, including the ability to encode host-like proteins. Here we show that viruses carry sequences with significant homology to several human peptide hormones including insulin, insulin-like growth factors (IGF)-1 and -2, FGF-19 and -21, endothelin-1, inhibin, adiponectin, and resistin. Among the strongest homologies were those for four viral insulin/IGF-1-like peptides (VILPs), each encoded by a different member of the family Iridoviridae VILPs show up to 50% homology to human insulin/IGF-1, contain all critical cysteine residues, and are predicted to form similar 3D structures...
March 6, 2018: Proceedings of the National Academy of Sciences of the United States of America
Jian Wu, Olan Jackson-Weaver, Jian Xu
TGFβ superfamily includes the transforming growth factor βs (TGFβs), bone morphogenetic proteins (BMPs), growth and differentiation factors (GDFs) and Activin/Inhibin families of ligands. Among the 33 members of TGFβ superfamily ligands, many act on multiple types of cells within the heart, including cardiomyocytes, cardiac fibroblasts/myofibroblasts, coronary endothelial cells, smooth muscle cells, and immune cells (e.g. monocytes/macrophages and neutrophils). In this review, we highlight recent discoveries on TGFβs, BMPs, and GDFs in different cardiac residential cellular components, in association with functional impacts in heart development, injury repair, and dysfunction...
February 15, 2018: Acta Biochimica et Biophysica Sinica
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
App Teh, U Z Izzati, K Mori, N Fuke, T Hirai, G Kitahara, R Yamaguchi
Bovine granulosa cells (GC) vary in their morphological aspect during different stages of folliculogenesis. In this study, 10 morphologically normal bovine ovaries were collected to study the structural aspects of different stages of GC using intermediate filament protein antibodies including cytokeratin AE1/AE3 (AE1/AE3), vimentin, nectin-4 and desmin. Hormonal immunolocalization was assessed using the immunomarkers anti-Müllerian hormone (AMH) and inhibin alpha. In addition, tumour markers and proliferation markers using c-erbB-2 oncoprotein and proliferating cell nuclear antigen, respectively, were investigated...
February 15, 2018: Reproduction in Domestic Animals, Zuchthygiene
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
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
Irshad Ahmad, Dhanashree D Jagtap, C Selvaa Kumar, Nafisa H Balasinor, A M Babitha Rani, Deepak Agarwal, Neelam Saharan
The inhibins are disulphide-linked heterodimeric glycoproteins that belong to the TGFβ superfamily. Inhibins have been well studied in mammals but the information about their structure and function is very limited in lower vertebrates. The aim of the present study was to characterize inhibin-A and to understand its receptor binding interaction, and to evaluate its biological function in Clarias batrachus. Structure prediction of inhibin-A revealed two glycosylation sites on inhibin-α (Asp262 and Asn334). Docking of inhibin-A with its receptor; betaglycan and Act RIIA showed that residues Ser321, Gly324 and Leu325 of inhibin-α are involved in high affinity binding with betaglycan while inhibin-βA bound to Act RIIA by forming hydrogen bonds...
February 10, 2018: General and Comparative Endocrinology
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
Jiaheng Li, Riqiang Bao, Shiwei Peng, Chunping Zhang
Over these years, more and more sex cord-stromal tumors have been reported. Granulosa cell tumor (GCT) is a rare tumor in ovaries, accounts for 2% to 5% of ovarian cancers. The main different feature of GCTs from other ovarian cancers is that GCTs can lead to abnormally secreted hormones (estrogen, inhibin and Müllerian inhibiting substance). The GCT is divided into two categories according to the age of patients, namely AGCT (adult granulosa cell tumor) and JGCT (Juvenile granulosa cell tumor). AGCT patients accounts for 95%...
February 6, 2018: Journal of Ovarian Research
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
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