Leptin is a protein hormone synthesized and secreted by adipose tissue and also probably in other organs and systems in human body. It has multiple functions such as to regulate feed intake and energy balance, gonadal regulation, action in the hypothalamo-pituitary-gonadal axis, regulates the metabolism of the fetal-placental unit in the pregnancy, fertility and reproductive systems, actions in the endometrium, mammary gland with corresponding influences on important physiologic processes such as menstruation, pregnancy and lactation. In the gynecologic surgery the serum leptin concentration is also modified. The knowledge of serum leptin concentration in the oncological diseases is going-up. Leptin is modified in the choriocarcinoma, Meigs' syndrome and other tumors. A better understanding of regulatory mechanisms will have direct clinical significance, as leptin has been proposed to impact on those causes of human perinatal morbidity and mortality that are associated with abnormalities of fetal maturity and development, general concept growth, trophoblast endocrinology, and placental sufficiency. Further investigations in this area will be necessary to improve new knowledge and a better understanding of the actions about this hormone.
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Front Vet Sci
December 2024
Sichuan Academy of Grassland Sciences, Chengdu, China.
The transition period is a crucial stage in the reproductive cycle for dams and is linked closely with postpartum recovery, reproduction performance, and health. The confronting problem in the yak industry is that transition yaks under a conventional grazing feeding regime endure nutritional deficiency since this period is in late winter and early spring of the Qinghai-Tibet Plateau with the lack of grass on natural pasture. Therefore, this study aimed to investigate the effects of perinatal nutritional supplementation and early weaning on serum biochemistry, reproductive performance, and metabolomics in transition yaks.
View Article and Find Full Text PDFAndrology
January 2025
Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Background: Although some studies have revealed the close relationship between leptin and premature ejaculation in clinical practice, whether and how leptin participates in the regulation of ejaculatory behaviors are still unknown.
Objective: To explore the role of leptin on ejaculatory behaviors and its underlying mechanism.
Materials And Methods: Copulation behavior tests were performed after acute and chronic leptin administration at peripheral and central levels.
Diabetes Obes Metab
January 2025
State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Anesthesiology, School of Stomatology, The Fourth Military Medical University, Xi'an, China.
Background: Given the potential role of brown adipose tissue (BAT) in stimulating energy expenditure, activating BAT can be an effective anti-obesity treatment. Here, we aimed to use adenoviruses to establish the effect of the inducible degrader of the low density lipoprotein receptor (IDOL) in the formation of BAT.
Methods: IDOL or green fluorescent protein was overexpressed by adenovirus and injected into the scapula of C57BL/6J mice and fed with high-fat diet for 12 weeks.
Biol Trace Elem Res
December 2024
Department of Biochemistry, Faculty of Pharmacy, University of Sadat City (USC), Menoufia, Egypt.
Metabolic syndrome during menopause can lead to diabetes, cardiovascular problems, and increased mortality rates. Hormone replacement therapy is recommended to manage climacteric complications, but it has serious adverse effects. This study, therefore, investigated the potential of supplementing some minerals, vitamins, and natural products like boric acid, magnesium, vitamin D3, and extra virgin olive oil on metabolic status of menopausal ovariectomized rats.
View Article and Find Full Text PDFBone
December 2024
Division of Clinical Anatomy, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University Tygerberg Campus, PO Box 241, Cape Town 8000, South Africa. Electronic address:
Obesogenic feeding can affect systemic metabolism and impact bone health and microarchitecture, but the findings of published studies often appear contradictory. This study aimed to compare the effects of a medium-fat/high-sugar (MF/HS) and a high-fat/high-fructose (HF/Fr) diet on the femora of weanling male Wistar rats, examining bone mineral content and density (BMC, BMD), cortical and cancellous bone microarchitecture and the cell populations within bone. Furthermore, we explored the correlations between circulating bone-targeting factors (in particular leptin, adiponectin and insulin) and bone parameters.
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