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growth hormone and male infertility

Chieh-Ying Wang, Ming-Chu Tang, Wen-Chi Chang, Kenryo Furushima, Chuan-Wei Jang, Richard R Behringer, Chun-Ming Chen
Bobby sox homolog (Bbx) is an evolutionally conserved gene, but its biological function remains elusive. Here, we characterized defects of Bbx mutant rats that were created by PiggyBac-mediated insertional mutagenesis. Smaller body size and male infertility were the two major phenotypes of homozygous Bbx mutants. Bbx expression profile analysis showed that Bbx was more highly expressed in the testis and pituitary gland than in other organs. Histology and hormonal gene expression analysis of control and Bbx-null pituitary glands showed that loss of Bbx appeared to be dispensable for pituitary histogenesis and the expression of major hormones...
September 2016: Biology of Reproduction
R M Salgado, M H Marques-Silva, E Gonçalves, A C Mathias, J G Aguiar, P Wolff
Male fertility can be evaluated through complete semen analysis. Plants belonging to the Tribulus genus are known for their role in enhancing sex hormone levels and semen quality. The aim of this study was to evaluate the effects of T. terrestris on semen quality and physiological parameters. Sixty-five men with abnormal semen evaluation were included in this study, in which they were prescribed with oral administration of Androsten(®) (250 mg of Tribulus terrestris dried extract per capsule). Body fat percentage, lean muscle mass gain, fluctuation in steroid hormone levels and all semen parameters were analysed during the period of treatment...
July 12, 2016: Andrologia
Hyo Serk Lee, Yong-Seog Park, Joong Shik Lee, Ju Tae Seo
OBJECTIVE: Growth hormone and its mediator, insulin-like growth factor-1 (IGF-1), have been suggested to exert gonadotropic actions in both humans and animals. The present study was conducted to assess the relationship between serum IGF-1 concentration, seminal plasma concentration, and sperm parameter abnormalities. METHODS: A total of 79 men were enrolled in this study from December 2011 to July 2012 and were prospectively analyzed. Patient parameters analyzed included age, body mass index, smoking status, urological history, and fertility history...
June 2016: Clinical and Experimental Reproductive Medicine
L M Rudolph, G E Bentley, R S Calandra, A H Paredes, M Tesone, T J Wu, P E Micevych
Reproduction involves the integration of hormonal signals acting across multiple systems to generate a synchronised physiological output. A critical component of reproduction is the luteinising hormone (LH) surge, which is mediated by oestradiol (E2 ) and neuroprogesterone interacting to stimulate kisspeptin release in the rostral periventricular nucleus of the third ventricle in rats. Recent evidence indicates the involvement of both classical and membrane E2 and progesterone signalling in this pathway. A metabolite of gonadotrophin-releasing hormone (GnRH), GnRH-(1-5), has been shown to stimulate GnRH expression and secretion, and has a role in the regulation of lordosis...
July 2016: Journal of Neuroendocrinology
Hongjuan Fang, Jian Xu, Huanwen Wu, Hong Fan, Liyong Zhong
Klinefelter syndrome (KS) is the most common chromosomal aneuploidy in male population, which demonstrates an unusual association with acromegaly. We herein present a rare case involving the confirmation of KS 2 years after surgical treatment for acromegaly.A 27-year-old man presented with an acromegalic appearance. Endocrinological examination revealed a high growth hormone (GH) concentration, low testosterone concentration, and high follicle-stimulating hormone and luteinizing hormone concentration. Brain imaging revealed a 9 × 6 × 7- mm sellar low-density nodule suggestive of a microadenoma...
April 2016: Medicine (Baltimore)
Arianna Mareri, MariaLaura Iezzi, Alessia Salvatore, Claudio Ligas, Elvira D'Alessandro
Maleness associated with a 45,X karyotype is a rare condition in childhood. It is usually diagnosed in adult age because of infertility. We report a unique case of an unbalanced translocation t(Y;21) in a 14-year-old boy with 45,X karyotype referred because of short stature, thin habitus and puberty delay. Hormone analysis showed low serum levels of basal testosterone, insulin-like growth factor (IGF-I) and gonadotrophins. Diagnosis of GH deficiency and puberty delay were made. He was treated with human chorionic gonadotropin (hCG) and GH therapy, respectively, for 6 and 24 months...
July 1, 2016: Journal of Pediatric Endocrinology & Metabolism: JPEM
Kaisa M Kettunen, Riitta Karikoski, Riikka H Hämäläinen, Teija T Toivonen, Vasily D Antonenkov, Natalia Kulesskaya, Vootele Voikar, Maarit Hölttä-Vuori, Elina Ikonen, Kirsi Sainio, Anu Jalanko, Susann Karlberg, Niklas Karlberg, Marita Lipsanen-Nyman, Jorma Toppari, Matti Jauhiainen, J Kalervo Hiltunen, Hannu Jalanko, Anna-Elina Lehesjoki
Mulibrey nanism (MUL) is a rare autosomal recessive multi-organ disorder characterized by severe prenatal-onset growth failure, infertility, cardiopathy, risk for tumors, fatty liver, and type 2 diabetes. MUL is caused by loss-of-function mutations in TRIM37, which encodes an E3 ubiquitin ligase belonging to the tripartite motif (TRIM) protein family and having both peroxisomal and nuclear localization. We describe a congenic Trim37 knock-out mouse (Trim37(-/-)) model for MUL. Trim37(-/-) mice were viable and had normal weight development until approximately 12 months of age, after which they started to manifest increasing problems in wellbeing and weight loss...
2016: Biology Open
Huizhen Wang, Vladimir Butnev, George R Bousfield, T Rajendra Kumar
Follicle-stimulating hormone (FSH) is a gonadotrope-derived heterodimeric glycoprotein. Both the common α- and hormone-specific β subunits contain Asn-linked N-glycan chains. Recently, macroheterogeneous FSH glycoforms consisting of β-subunits that differ in N-glycan number were identified in pituitaries of several species and subsequently the recombinant human FSH glycoforms biochemically characterized. Although chemical modification and in vitro site-directed mutagenesis studies defined the roles of N-glycans on gonadotropin subunits, in vivo functional analyses in a whole-animal setting are lacking...
May 5, 2016: Molecular and Cellular Endocrinology
A Yaba, E R Bozkurt, N Demir
The mammalian target of rapamycin (TOR) has been implicated in the control of different stressors, growth factors, nutrients and hormones, participating in the control of key cellular functions. Controlling this many pathways poses mTOR signalling as a potential new target in new treatment strategies for multiple cancer types. mTOR components could potentially mislocated in tumour cells, which could lead to activation of signalling pathway that should not be active. Therefore, we aimed to show localisation of mTOR signal proteins in testicular seminoma...
August 2016: Andrologia
Min Kyung Yu, Mo Kyung Jung, Ki Eun Kim, Ah Reum Kwon, Hyun Wook Chae, Duk Hee Kim, Ho-Seong Kim
PURPOSE: In male patients with congenital adrenal hyperplasia (CAH), the presence of testicular adrenal rest tumors (TARTs) have been reported, however their prevalence and clinical manifestations are not well known. Untreated TARTs may lead to testicular structural damage and infertility. This study was conducted to investigate the prevalence of TARTs in male patients with CAH, and characterize the manifestations to identify contributing factors to TART. METHODS: Among 102 CAH patients aged 0-30 years, 24 male patients have been regularly followed up in our outpatient clinic at Severance Children's Hospital from January 2000 to December 2014...
September 2015: Annals of Pediatric Endocrinology & Metabolism
Lianhe Chu, Jianzhen Li, Yun Liu, Christopher H K Cheng
Using the transcription activator-like effectors nucleases-mediated gene knockout technology, we have previously demonstrated that LH signaling is required for oocyte maturation and ovulation but is dispensable for testis development in zebrafish. Here, we have further established the fshb and fshr knockout zebrafish lines. In females, fshb mutant is subfertile, whereas fshr mutant is infertile. Folliculogenesis is partially affected in the fshb mutant but is completely arrested at the primary growth stage in the fshr mutant...
December 2015: Molecular Endocrinology
Letteria Minutoli, Antonio Micali, Antonina Pisani, Domenico Puzzolo, Alessandra Bitto, Mariagrazia Rinaldi, Gabriele Pizzino, Natasha Irrera, Federica Galfo, Salvatore Arena, Giovanni Pallio, Anna Mecchio, Antonino Germanà, Daniele Bruschetta, Rosaria Laurà, Carlo Magno, Herbert Marini, Francesco Squadrito, Domenica Altavilla
Cadmium (Cd) causes male infertility. There is the need to identify safe treatments counteracting this toxicity. Flavocoxid is a flavonoid that induces a balanced inhibition of cyclooxygenase (COX)-1 and COX-2 peroxidase moieties and of 5-lipoxygenase (LOX) and has efficacy in the male genitourinary system. We investigated flavocoxid effects on Cd-induced testicular toxicity in mice. Swiss mice were divided into 4 groups: 2 control groups received 0.9% NaCl (vehicle; 1 ml/kg/day) or flavocoxid (20 mg/kg/day ip); 2 groups were challenged with cadmium chloride (CdCl2; 2 mg/kg/day ip) and administered with vehicle or flavocoxid...
November 2015: Toxicological Sciences: An Official Journal of the Society of Toxicology
V Ntala, B Asimakopoulos, S Veletza, E Alexandris, V Karachaiou, N Nikolettos
PURPOSE: The intracytoplasmic sperm injection (ICSI) outcome is depended mainly on oocyte quality. Cytokines and their receptors play a critical role in oocyte maturation, fertilization, and embryo implantation. The purpose of the study was to study the levels of vascular endothelial growth factors (VEGFA, VEGFR1, VEGFA) in follicular fluids (FF) women participating in ICSI-in vitro fertilization (IVF) cycles in relation to cycle's outcome. MATERIAL AND METHODS: One hundred and fifty three samples of 70 women participating in ICSI cycles were classified in three infertility groups: male factor, female factor, and low responders...
2015: Clinical and Experimental Obstetrics & Gynecology
Jannine D Cody, Courtney Sebold, Patricia Heard, Erika Carter, Bridgette Soileau, Minire Hasi-Zogaj, Annice Hill, David Rupert, Brian Perry, Louise O'Donnell, Jon Gelfond, Jack Lancaster, Peter T Fox, Daniel E Hale
Providing clinically relevant prognoses and treatment information for people with a chromsome18q deletion is particularly challenging because every unrelated person has a unique region of hemizygosity. The hemizygous region can involve almost any region of 18q including between 1 and 101 genes (30 Mb of DNA). Most individuals have terminal deletions, but in our cohort of over 350 individuals 23% have interstitial deletions. Because of this heterogeneity, we take a gene by gene approach to understanding the clinical consequences...
September 2015: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
Xiaoying Yu, Jian Ruan, Lian-Ping He, Weihua Hu, Qinyang Xu, Jingwen Tang, Jian Jiang, Jun Han, Yi-Feng Peng
Growth hormone (GH) is involved in the regulation of male and female infertility. Several clinical studies reveal that adjuvant GH treatment has a possible role in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI), especially in poor ovarian responders (POR) undergoing IVF/ICSI. Recent studies suggest that GH addition in POR patients significantly improves the rate of clinical pregnancy and live birth. Databases including PubMed, Embase, the Cochrane Central China National Knowledge Infrastructure (CNKI) and Google Scholar were searched for randomized controlled trials (RCTs) or controlled clinical trials (CCTs) on the effectiveness of GH supplementation with gonadotrophins in IVF/ICSI for POR...
2015: International Journal of Clinical and Experimental Medicine
Shiming Jiang, Tiffany A Katz, Jason P Garee, Francesco J DeMayo, Adrian V Lee, Steffi Oesterreich
Scaffold attachment factors SAFB1 and SAFB2 are multifunctional proteins that share >70% sequence similarity. SAFB1-knockout (SAFB1(-/-)) mice display a high degree of lethality, severe growth retardation, and infertility in male mice. To assess the in vivo role of SAFB2, and to identify unique functions of the two paralogs, we generated SAFB2(-/-) mice. In stark contrast to SAFB1(-/-), SAFB2(-/-) offspring were born at expected Mendelian ratios and did not show any obvious defects in growth or fertility...
September 2015: Disease Models & Mechanisms
Zhiwei Zhang, Shuk-Wa Lau, Lingling Zhang, Wei Ge
Gonadotropins are primary hormones that control vertebrate reproduction. In a recent study, we analyzed the impacts of FSH and LH on zebrafish reproduction by disrupting FSH and LH-β genes (fshb and lhb) using transcription activator-like effector nuclease (TALEN) technology. Using the same approach, we successfully deleted FSH and LH receptor genes (fshr and lhcgr) in the present study. In contrast to the deficiency of its cognate ligand FSH, the fshr-deficient females showed a complete failure of follicle activation with all ovarian follicles arrested at the primary growth-previtellogenic transition, which is the marker for puberty onset in females...
October 2015: Endocrinology
Merlin G Butler, Ann M Manzardo
PURPOSE: Total body mass impacts reproductive health and infertility which has increased in the United States with rising rates of obesity. Overlapping genetic and environmental factors contribute to obesity and infertility including the androgen receptor (AR), a steroid hormone-activated transcription factor that is key in regulating androgen activity and sensitivity to sex hormones, weight and body composition in both males and females. The AR gene which is X-linked contains a polymorphic CAG trinucleotide repeat which varies in length and inversely correlated with gene expression...
June 2015: Journal of Assisted Reproduction and Genetics
Guan-Chung Wu, Hau-Wen Li, Jia-Wun Luo, Chi Chen, Ching-Fong Chang
In most vertebrates, hermaphroditism results in infertility. However, hermaphroditism occurs in 6% of teleosts, which primarily undergo protogyny. Here, to elucidate the transient stage from gonochorism to hermaphroditism, juvenile black porgies as a model animal were fed a diet containing estradiol (E2) for 3 mo, followed by withdrawal of E2 treatment. The E2-terminated fish had ectopically located oocytes in the regenerated testes. Antimüllerian hormone (amh) was strongly expressed in the Sertoli cells with type A spermatogonia and follicle cells with vitellogenic oocytes...
June 2015: Biology of Reproduction
Shannon D Whirledge, Jose M Garcia, Roy G Smith, Dolores J Lamb
The chemotherapeutic drug cisplatin causes a number of dose-dependent side effects, including cachexia and testicular damage. Patients receiving a high cumulative dose of cisplatin may develop permanent azoospermia and subsequent infertility. Thus, the development of chemotherapeutic regimens with the optimal postsurvival quality of life (fertility) is of high importance. This study tested the hypothesis that ghrelin administration can prevent or minimize cisplatin-induced testicular damage and cachexia. Ghrelin and its receptor, the growth hormone secretagogue receptor (GHSR-1a), are expressed and function in the testis...
March 2015: Biology of Reproduction
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