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Unlabelled: Growth hormone (GH) plays a crucial role in various physiological functions, with its secretion tightly regulated by complex endocrine mechanisms. Pathological conditions such as acromegaly or pituitary tumors result in elevated circulating GH levels, which have been implicated in a spectrum of metabolic disorders, potentially by regulating liver metabolism. In this study, we focused on the liver, a key organ in metabolic regulation and a primary target of GH, to investigate the impact of high circulating GH on liver metabolism.
View Article and Find Full Text PDFInvolvement of ATF6 in Octreotide-Induced Endothelial Barrier Enhancement.
Pharmaceuticals (Basel)
November 2024
School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA.
: Endothelial hyperpermeability is the hallmark of severe disease, including sepsis and acute respiratory syndrome (ARDS). The development of medical countermeasures to treat the corresponding illness is of utmost importance. Synthetic somatostatin analogs (SSA) are FDA-approved drugs prescribed in patients with neuroendocrine tumors, and they act via growth hormone (GH) suppression.
View Article and Find Full Text PDFLinsitinib Decreases Thyrotropin-Induced Thyroid Hormone Synthesis by Inhibiting Crosstalk Between Thyroid-Stimulating Hormone and Insulin-Like Growth Factor 1 Receptors in Human Thyrocytes and in Mice.
Thyroid
December 2024
Laboratory of Endocrinology and Receptor Biology, Bethesda, Maryland, USA.
Thyrotropin receptor (TSHR) and insulin-like growth factor 1 receptor (IGF-1R) have been shown to crosstalk in primary cultures of human thyrocytes (hThyros) and Graves' orbital fibroblasts. The phenomenon of TSHR/IGF-1R crosstalk has been largely studied in the pathogenesis of thyroid eye disease (TED) in human orbital fibroblasts. Here, we investigated the effects of inhibiting the IGF-1R-mediated contribution to crosstalk by linsitinib (Lins), a small-molecule IGF-1R kinase inhibitor, on TSH-induced regulation of thyroperoxidase (TPO) and thyroglobulin (TG) mRNAs and proteins in hThyros and on TPO and TG mRNAs and free thyroxine (fT4) levels in mice.
View Article and Find Full Text PDFThe biogeography of gastrointestinal mucosal microbiota of beef cattle at harvest.
Front Microbiol
December 2024
VERO Program, Texas A&M University, Canyon, TX, United States.
Introduction: The gastrointestinal microbiota profoundly influences the health and productivity of animals. This study aimed to characterize microbial community structures of the mouth, gastrointestinal tract (GIT), and feces of cattle.
Methods: Samples were collected from 18 Akaushi crossbred steers at harvest from multiple locations, including the oral cavity, rumen, abomasum, duodenum, jejunum, ileum, cecum, spiral colon, distal colon, and feces.
Optimization of ovum pick-up-in vitro fertilization and in vitro growth of immature oocytes in ruminants.
J Reprod Dev
December 2024
Laboratory of Veterinary Theriogenology, Joint Department of Veterinary Medicine, Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan.
Due to the strong demand for embryo production from young and genotyped superior animals using ovum-pick up (OPU) combined with in vitro fertilization (IVF), the number of in vitro-produced embryos has exceeded that of in vivo-derived embryos globally since 2016. One of the merits of OPU-IVF is that the administration of follicle-stimulating hormone (FSH) is not essential, while FSH treatment prior to OPU promotes oocyte developmental competence. Thus, investigations are needed to optimize OPU-IVF protocols with and without FSH.
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