The role of leptin in the control of body weight.
نویسنده
چکیده
Physiologic responses to high and low leptin concentrations are strikingly asymmetrical. High concentrations often produce minimal effects, whereas low concentrations provoke strong counterregulatory responses. A model and rationale for the physiology is presented.
منابع مشابه
مقایسه سطح خونی هورمون لپتین در بیماران چاق دیابتی و غیردیابتی
Introduction: Leptin was first discovered from the "Ob Gene" by Friedwan and co-workers in 1994. It is a small peptide with 167 amino acids and molecular weight of 16 Kd . It is secreted by adipose tissues. Leptin has two type of receptors in Hypothalamus and other tissues including muscles, liver and intestines. Leptin inhibits neuropeptide Y resulting in decreased appetite and on the other ha...
متن کاملA Comparative Study of Serum and Follicular Fluid Leptin Concentrations among Explained Infertile, Unexplained Infertile and Fertile Women
Background The relationship between metabolism and reproduction has been always considered as an important topic in female endocrinology. It seems that leptin is one of the involved factors in infertility. Leptin, in addition to regulating body weight plays an important role in regulation of endocrine, reproductive and immune systems. The aim of this stduy is to compare serum and follicular flu...
متن کاملرابطه وزن تولد با لپتین و آدیپونکتین
Background: Adiponectin and leptin are hormones which are related to body fat tissues and body weight. In pregnant women, conflicting associations have been reported between the role of serum concentrations of adiponectin and leptin with infant birth weight. The aim of this study was to determine the association between maternal and cord blood adiponectin and leptin concentrations with birth w...
متن کاملEffect of Folic Acid on serum Leptin, Grehlin concentration, and feed intake in male Wistar rats
Introduction: There is no comprehensive study on the effect of Folate on food intake therefore the present study was carried out to determine the effect of Folate supplementation on serum concentrations of Leptin and Grehlin and food intake in male Wistar rats. Methods: The study was carried out for 42 days during which the animals were weighed weekly their food and water intakes were measu...
متن کاملLeptin and sex hormones in psoriasis and correlation with disease severity
Background: Leptin, a 16-KDa peptide hormone secreted from theadipose tissue, plays an important role in the regulation of energyintake and expenditure and body weight regulation; furthermore,it has a regulatory function on the reproductive system. The aimof this study was to assess the relationship between serum leptinlevels and sex hormones in psoriatic patients and control groupand to determ...
متن کاملThe effects of morphine and nicotine co-administration on body weight, food intake and appetite-regulating peptides in rats
Previous studies in humans and animals have reported that nicotine administration decreases body weightand caloric intake. Opiate and cigarette have been used concomitantly as drug abuse. The aim of the present study was, therefore, to analyze the effect of chronic co-administration of nicotine and morphine on food intake, body weight and on some feeding-associated peptides. All experiments wer...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Nutrition reviews
دوره 60 10 Pt 2 شماره
صفحات -
تاریخ انتشار 2002