Results 91 to 100 of about 126,611 (274)

Effect of Salinity Stress on Gut–Brain–Gonad Axis in the Red‐Eared Slider (Trachemys scripta elegans)

Integrative Zoology, EarlyView.
The increase in salinity leads to changes in the gut microbiota and metabolites of Trachemys scripta elegans, affecting the synthesis and secretion of neurotransmitters or precursors, which can inhibit the secretion of reproductive hormones and affect the self‐renewal and differentiation process of spermatogonial stem cells.
Qiongyu Zhang, Na Li, Xue Tang, Hanru Chen, Meiling Hong, Li Ding   +5 more
wiley   +1 more source

Hypersecretion of the alpha-subunit in clinically non-functioning pituitary adenomas: Diagnostic accuracy is improved by adding alpha-subunit/gonadotropin ratio to levels of alpha-subunit

, 2010
In vitro, the majority of clinically non-functioning pituitary adenomas (NFPAs) produce gonadotropins or their alpha-subunit; however, in vivo, measurements of alpha-subunit levels may not accurately detect the hypersecretion of the alpha ...
Jørgensen, Jens O L, Petersen, Per H, Hagen, Claus, Ganc-Petersen, Joanna, Mellemkjaer, Søren, Blaabjerg, Ole, Andersen, Marianne   +6 more
core   +1 more source

Semen quality in patients with testicular cancer is associated with age and with greatly elevated levels of beta human chorionic gonadotropin

Andrology, EarlyView.
Abstract Background Poor semen quality is a well‐known feature in patients with testicular germ cell tumours (GCTs) at the time of diagnosis but the underlying biological reasons are incompletely understood. Objectives This study aimed to identify GCT‐specific clinical factors that are involved with poor semen quality in GCT patients.
Klaus‐Peter Dieckmann, Johanna Hochmuth‐Tisch, Andrea Salzbrunn, Cord Matthies, Kathrein von Kopylow, Marta Godlewska, Christian Wülfing, Uwe Pichlmeier, Armin Soave, Christian Guido Ruf   +9 more
wiley   +1 more source

Pituitary gonadotropins regulate spermatogonial differentiation and proliferation in the rat [PDF]

, 1996
The relative regulatory roles of the pituitary gonadotropins, luteinizing hormone and follicle stimulating hormone in the spermatogonial proliferation has been studied using specific antibodies against these hormones in the immature rats ...
Dighe, Rajan R, Ramaswamy, Suresh, Shetty, Jagatpala, Marathe, Gopal K   +3 more
core   +2 more sources

Assessing a Model for a Complex Systemic Disorder—The Value of Male Mice With a Supernumerary X Chromosome for Klinefelter Syndrome Research

Andrology, EarlyView.
ABSTRACT Introduction Direct experimental investigation of Klinefelter syndrome (KS) in patients is limited because the syndrome manifests heterogeneously and affects multiple organ systems. Studying KS therefore requires a model that captures this complexity as accurately as possible while still permitting controlled experimental manipulation ...
Fariba Saadati, Joachim Wistuba
wiley   +1 more source

Supposed pituitary-production of human chorionic Gonadotropin induced by androgen deprivation therapy

International Brazilian Journal of Urology
Introduction: The main cause of slightly elevated human chorionic gonadotropin (HCG) after successful treatment of male germ cell tumors is considered to be pituitary-derived HCG.
Koji Yoshimura, Yoshiharu Nakashima, Kyohei Sugiyama, Naoki Kohei, Akitoshi Takizawa   +4 more
doaj   +1 more source

Lipolytic activity of gonadotropins and their subunits

, 1972
The lipolytic activity of highly purified gonadotropins (LH, FSH, PMSG and hCG) and the related glycoprotein, TSH, was evaluated in rat adipose cells. It was found that LH, FSH and TSH were able to stimulate glycerol release.
Farmer, Susan W., Ramachandran, J., Papkoff, Harold, J. RAMACHANDRAN, HAROLD PAPKOFF, SUSAN W. FARMER   +5 more
core   +1 more source

Association Between FTO rs1558902 Polymorphism, Age‐Related Hypogonadism, and Central Obesity in Japanese Men

Andrology, EarlyView.
ABSTRACT Background Obesity and low testosterone levels are closely interconnected, with the FTO gene being the most robust genetic determinant of body mass index (BMI). However, whether this primary genetic driver of obesity directly influences the hypothalamic‐pituitary‐testicular (HPT) axis remains unclear.
Takahiro Tsutsumi, Hideyuki Okuma, Fuminori Kazama, Masumi Endo, Yuna Takato, Hitomi Nara, Asako Miyazaki, Nozomi Harai, Kyoichiro Tsuchiya   +8 more
wiley   +1 more source

Managing infertility with the follitropin alfa prefilled pen injector – patient considerations

Therapeutics and Clinical Risk Management, 2015
Klaus Bühler Centre for Gynaecological Endocrinology and Reproductive Medicine, Stuttgart, Germany Abstract: Gonadotropin treatment has been used in fertility treatment since the 1930s.
Bühler K
doaj  

Intrauterine Growth and Male Reproductive Health: A Follow‐up Study From the Danish National Birth Cohort

Andrology, EarlyView.
ABSTRACT Background Reduced intrauterine growth might affect male reproductive health later in life, however, existing research remain inconclusive. Objectives To investigate the association between placental weight and birthweight Z‐scores and semen characteristics, testes volume, and reproductive hormone levels in young men.
Anne Gaml‐Sørensen, Nis Brix, Andreas Ernst, Sandra Søgaard Tøttenborg, Mette Møller Dornfeldt, Karin Sørig Hougaard, Siri Eldevik Håberg, Mikko Myrskylä, Gunnar Toft, Jens Peter Ellekilde Bonde, Cecilia Høst Ramlau‐Hansen   +10 more
wiley   +1 more source