نتایج جستجو برای: leptin is a hormone
تعداد نتایج: 14157392 فیلتر نتایج به سال:
A critical amount of energy reserve is necessary for puberty initiation, for normal sexual maturation and maintenance of cyclicity and fertility in females of most species. Therefore, the existence of circulating metabolic cues which directly modulate the hypothalamus-pituitary-gonad axis is predictable. The adipocyte-derived hormone leptin is one of these cues having been studied extensively i...
for the first time nakayama introduced qf-ring. in 1967 carl. faith and elbert a. walker showed that r is qf-ring if and only if each injective right r-module is projective if and only if each injective left r-modules is projective. in 1987 s.k.jain and s.r.lopez-permouth proved that every ring homomorphic images of r has the property that each cyclic s-module is essentialy embeddable in dire...
چکیده ندارد.
The adipocyte-derived hormone/cytokine leptin acts as a metabolic switch, connecting the body's nutritional status to high energy consuming processes such as reproduction and immune responses. Inappropriate leptin responses can promote autoimmune diseases and tumorigenesis. In this review we discuss the current strategies to modulate leptin signaling and the possibilities for their use in resea...
Leptin was first characterized as a hormone that plays a central role in the control of body adiposity. A number of studies later revealed several other functions for leptin, including the capacity to modulate immune system activity. Currently, leptin occupies an important position as a unifying mechanism integrating nutritional status and immune function. Here, we will review some of the actio...
the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...
OBJECTIVE To investigate plasma leptin response to short term exercise in college level male rowers. METHODS Thirteen rowers performed a 30 minute maximal rowing ergometer test. Venous blood samples were obtained before, immediately after, and after 30 minutes of recovery. Concentrations of leptin, insulin, growth hormone, insulin-like growth factor-I (IGF-I), and IGF binding protein-3 (IGFBP...
The adipocyte-derived hormone leptin is a central modulator of food intake, metabolism and neuroendocrine functions. It is also involved in a physiological loop linking the activity of the hypothalamo-pituitary-adrenal axis and adipose tissue. At the adrenal level, leptin has been shown to antagonize the effects of ACTH on glucocorticoid biosynthesis by decreasing the expression of various enzy...
Inflammatory response and articular destruction are common symptoms of osteoarthritis (OA) and rheumatoid arthritis (RA). Leptin, an adipocyte-secreted hormone that centrally regulates weight control, may exert proinflammatory effects in the joint, depending on the immune response. Yet, the mechanism of leptin interacting with the arthritic inflammatory response is unclear. This study finds tha...
The discovery of leptin revolutionised the field of obesity research since this hormone represents the long postulated ‘adiposity signal’ that provides the afferent signal required for the lipostatic theory (1), conveying information about the status of body fat stores to the brain. Despite the outstanding anorexigenic potential of leptin, catabolic effects are not always apparent. Since circul...
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