نتایج جستجو برای: leptin is a hormone
تعداد نتایج: 14157392 فیلتر نتایج به سال:
The leptin plays an important role in the physiology of the reproductive system. This hormone acts as a critical link between the adipose tissue and the reproductive system, indicating mainly whether the level of energetic reserves is adequate for a normal reproductive function. Leptin presents complex interactions at all the levels of the hypothalamo-hypophyso-gonadal axis, exerting stimulatin...
Leptin is a polypeptide hormone produced predominantly in adipocytes. It has been found to be implicated in the regulation of satiety and energy homeostasis. A role for leptin in reproduction was later suggested by findings that this hormone may be involved in the regulation of the hypothalamic-pituitary-gonadal axis via endocrine, paracrine and/or autocrine pathways. The objective of the study...
Pelvic endometriosis is an immune-related chronic inflammatory disease, characterized by ectopic implants of endometrium in the peritoneal cavity and associated with increased secretion of proinflammatory cytokines and neoangiogenesis. Leptin, the adipocyte-derived hormone, has been shown to have a role in food intake, basal metabolism, and reproductive function. Leptin levels are dynamically r...
the aim of this study was to investigate the effects of 12 weeks of walking on plasma levels of leptin in postmenopausal women with breast cancer. nineteen postmenopausal women with breast cancer (age: 55.05+2.7 years) who received surgery, chemotherapy and radiation-therapy and were receiving hormone therapy by letrozol were divided into two groups: control (n=8) and experimental (n=11). subje...
This special issue of Journal of Endocrinology celebrates the 20th anniversary of the discovery of leptin, a hormone produced by adipose tissue, which provides critical signals to the organism regarding the status of its energy stores. The discovery of leptin not only revolutionised our understanding of endocrine physiology but has also resulted in a registered medicinal product which is alread...
Leptin, a peptide hormone released by adipose tissue, acts on the hypothalamus to control cravings and appetite. Leptin also acts to decrease taste responses to sweet substances, though there is little detailed information regarding where leptin acts in the taste transduction cascade. The present study examined the effects of leptin on sweet-evoked responses and neuro transmitter release from i...
We investigated the effect of daily intracerebroventricular (ICV) leptin administration (neonatal age 2-7 days) on hypothalamic neuropeptides (neuropeptide Y, alpha-melanocyte-stimulating hormone) that regulate food intake, body weight (BW) gain, and the metabolic/hormonal profile in suckling (8 and 21 days) and adult rat (35, 60, 90, and 120 days). ICV leptin (0.16 mug.g BW(-1).dose(-1); n = 7...
Obesity is a recently established risk factor for breast cancer incidence and mortality. A characteristic of obesity is elevated circulating levels of adipocyte-derived hormone leptin. Evidence indicates that leptin plays an important role in mammary tumor formation; however, the mechanisms involved are poorly understood. Toward better defining the role of leptin in breast cancer, we describe t...
BACKGROUND Human leptin is a peptide hormone that is released from white adipocytes. The absence of leptin or its receptor leads to uncontrolled food intake, leading to obesity. In the present work, the effects of auricular acupressure combined with low-calorie diet on the leptin hormone level were investigated. METHODS Volunteers (n=86) with body mass indices (BMI) between 25 and 45 kg/m² we...
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