Results 151 to 160 of about 74,629 (302)

Pubertal Dynamics of Sertoli and Leydig Cell Dysfunction in Klinefelter Syndrome

Clinical Endocrinology, EarlyView.
ABSTRACT Context Klinefelter syndrome (KS), defined by a 47, XXY karyotype, is commonly associated with progressive testicular failure. The precise timing of Sertoli and Leydig cell dysfunction during puberty remains unclear. Objective To determine the onset and progression of testicular insufficiency during puberty in KS, and to assess whether ...
Tredez Axelle, Christine Lefevre, Simon Boussion, Cindy Colson, Iva Gueorguieva, Francois Marcelli, Anne Laure Barbotin, Pascal Pigny, Hamza Benderradji, Clara Leroy   +9 more
wiley   +1 more source

Ligand-induced selective signalling at the gonadotrophin releasing hormone receptor

, 2008
Includes abstract.Includes bibliographical references (p. 179-202).The pituitary gonadotrophin releasing hormone (GnRH) receptor regulates reproduction by activation of Gq/11 proteins.
Coetsee, Marla Catherine
core  

Inositol and Berberine Synergistically Reprogram Endocrine and Ovarian Metabolism in Polycystic Ovary Syndrome

Cell Proliferation, EarlyView.
In a DHEA+HFD‐induced mouse model, Ins/BBR alleviated mitochondrial defects and broadly reprogrammed metabolic landscape in granulosa cells, in specific, restoring nucleotide pools and amino acid turnover, and preventing abnormal long‐chain fatty acid accumulation.
Juan Ge, Chenxiang Zhang, Yilong Zhao, Haiyang Zhao, Shuai Zhu, Tao Tang, Guorui Zhang, Qiang Wang, Hui Wang   +8 more
wiley   +1 more source

High Uric Acid Promotes Stem Leydig Cell Senescence by CCDC90B Mediates Mitochondrial Quality Control Imbalance

Cell Proliferation, EarlyView.
In hyperuricemia, uric acid inhibits CCDC90B ubiquitination degradation by binding to it. Excessive CCDC90B induces mitochondrial calcium overload, leading to mitochondrial quality control imbalance and ultimately resulting in SLC senescence and decreased testosterone levels.
Jiayu Huang, Ao Wang, Xiangyu Li, Peng Huang, Kaixuan Zeng, Lu Sun, Moxuan Li, Yixiang Chen, Jiancheng Wang   +8 more
wiley   +1 more source

Investigating crosstalk in lipid rafts between the glucocorticoid receptor and gonadotropin-releasing hormone receptor signaling pathways in a gonadotrope cell line

, 2010
Includes abstract.Includes bibliographical references (leaves 121-158).A recent study from the Hapgood laboratory demonstrated the presence of a novel crosstalk mechanism between the glucocorticoid receptor (GR) and gonadotropin-releasing hormone ...
Wehmeyer, Lance
core  

Short‐Term Combined Treatment With Tirzepatide and Metformin for Overweight/Obese Chinese Women With Polycystic Ovary Syndrome: A Prospective, Open‐Label, Randomised Controlled Trial

Diabetes, Obesity and Metabolism, EarlyView.
ABSTRACT Aims This study aimed to assess the effects of low‐dose tirzepatide combined with metformin (COM) versus metformin (MET) monotherapy in overweight/obese women with polycystic ovary syndrome (PCOS). Materials and Methods Sixty overweight/obese women with PCOS were randomised to the MET group (1000 mg twice daily [BID]) or the COM group (MET ...
Zhuoran Yang, Yuxin Xu, Hu Du, Wenya Liu, Haiyan Chen, Dongfang Liu, Lili Zhang, Cong Wang   +7 more
wiley   +1 more source

Genetic Parameters and Genome‐Wide Association Studies for Fertility and Reproduction Traits in U.S. Katahdin Sheep Based on the Single‐Step GBLUP Methodology

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sheep production contributes to a secure and diverse food and fibre supply in the United States, with growing ethnic diversity strengthening demand. Katahdin is a composite hair‐type sheep breed developed in the United States that has become the most popular breed in many regions of the country and the first one to have genomic selection ...
Alejandra Toro Ospina, Ronald M. Lewis, Bradley A. Freking, Joan M. Burke, Thomas W. Murphy, Carrie S. Wilson, Luiz F. Brito   +6 more
wiley   +1 more source

opioid peptides modulate luteinizing hormone secretion during sexual maturation

, 1979
Subcutaneous injections of naloxone, an opiate antagonist, lead to an increase in serum luteinizing hormone concentrations in female but not in male rats before they reach puberty.
M. S. Blank, H. G. Friesen, A.E. Panerai
core  

Hypothalamic-superior frontal gyrus functional connectivity alterations and luteinizing hormone correlations in girls with central precocious puberty. [PDF]

Ann Pediatr Endocrinol Metab
Cai H, Su L, Chen X, Yang M, Xu J, Shan Y, Zhao R, Wang L, Yu Y, Zou L.   +9 more
europepmc   +1 more source

Dietary L‐Tyrosine Sustains Egg Production and Quality by Modulating Promoter CpG Methylation, Gene Expression, and Hormone Profiles in Reproductive Signalling Pathways of Aged Laying Hens

Journal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Managing prolactin (PRL)‐mediated reproductive suppression is critical for maintaining egg production in commercial laying hens. L‐tyrosine (TYR), a precursor of dopamine (DA), may counteract age‐related reproductive decline by suppressing PRL, thereby sustaining productivity and egg quality in late‐phase laying hens.
Hasan Hüseyin İpçak
wiley   +1 more source