In type 2 diabetes mellitus (DM2), the impaired functions of brain insulin system are associated with weakened transport through blood-brain barrier due to resistance. Insulin deficiency in can be corrected by intranasal administration (II), whose effect may enhanced C-peptide (ICP). this work, we study treating hyperinsulinemic and normoinsulinemic DM2 rats ICP (36 µg/rat/day), II (20 µg/rat/d...

10 The morphology and gene expression of neurokinin B (NKB) neurons is altered in the human infundibular (arcuate) nucleus in association with the ovarian failure of menopause. Also, gonadotropin releasing-hormone (GnRH) mRNA is elevated and proopiomelanocortin (POMC) mRNA decreased. To determine if loss of ovarian steroids could produce comparable changes in gene expression in primates, we mea...

objective(s): leptin exerts various effects on appetite and body weight. disruption of the obesitygene is precedent to fatness. insulin or glucose elevates leptin, but streptozotocin reduces it. however, controversial data exist for the effects of leptin on diabetes and leptin level in each gender. leptin can damage the kidney function but little evidence exists for its hepatic effects. the aim...

Leptin is a 16 kDa protein mainly produced by adipose tissue in proportion to adipose tissue mass. Originally thought to be a satiety factor, leptin is a pleiotropic molecule. In addition to playing a role in energy regulation, leptin also regulates endocrine and immune functions. Both the structure of leptin and that of its receptor suggest that leptin might be classified as a cytokine. The se...

A specific leptin RIA was developed to assess concentrations of leptin in ovine plasma, and was shown to be efficient with bovine and caprine plasma. A specific, high-affinity antibody was generated against recombinant ovine leptin which, when used in a competitive leptin RIA, provided valid estimates of linearity (r=+0.989-0.998), recovery (102%), repeatability (13%) and limit of sensitivity (...

Leptin is an adipocyte-derived hormone that has been implicated to serve as a metabolic signal to the reproductive axis. The role of leptin in pubertal maturation, however, has been a much-debated topic. We have previously reported that leptin serves as a permissive signal to the onset of puberty in the female rat. In an attempt to further understand the mechanics of leptin during pubertal matu...

Objective(s): Genistein, as a phytoestrogen found in legumes, has several biological activities in general and anti-diabetic activity particularly. In this study, we investigated the effect of genistein on proteins involved in β-cell proliferation, survival and apoptosis to further reveal its anti-diabetic potential in the ovariectomized diabetic rat. Materials and Methods: We used three-month-...