Brain-derived neurotrophic factor, corticotropin-releasing factor, and hypothalamic neuronal histamine interact to regulate feeding behavior

2013 ◽  
Vol 125 (4) ◽  
pp. 588-598 ◽  
Author(s):  
Koro Gotoh ◽  
Takayuki Masaki ◽  
Seiichi Chiba ◽  
Hisae Ando ◽  
Kansuke Fujiwara ◽  
...  

Endocrinology ◽  
2010 ◽  
Vol 151 (4) ◽  
pp. 1532-1540 ◽  
Author(s):  
Motoyuki Kohjima ◽  
Yuxiang Sun ◽  
Lawrence Chan

Recent studies suggest that hyperinsulinemia and insulin resistance are linked to Alzheimer’s disease (AD). In this study, we used Tg2576 transgenic (Tg) mice, a widely used transgenic mouse model for AD, to explore the relationship between increased amyloid β-peptide (Aβ) and insulin resistance. When fed a high-fat diet (HFD), Tg mice developed obesity and insulin resistance at 16 wk of age. Furthermore, HFD-fed Tg mice displayed abnormal feeding behavior and increased caloric intake with time. Although caloric intake of HFD-fed Tg mice was similar to that of normal diet-fed Tg or wild-type mice during 4 to 8 wk of age, it increased sharply at 12 wk, and went up further at 16 wk, which paralleled changes in the level of Aβ40 and Aβ42 in the brain of these mice. Limiting food intake in HFD-fed Tg mice by pair-feeding a caloric intake identical with that of normal diet-fed mice completely prevented the obesity and insulin intolerance of HFD-fed Tg mice. The hypothalamus of HFD-fed Tg mice had a significant decrease in the expression of the anorexigenic neuropeptide, brain-derived neurotrophic factor, at both the mRNA and protein levels. These findings suggest that the increased Aβ in the brain of HFD-fed Tg2576 mice is associated with reduced brain-derived neurotrophic factor expression, which led to abnormal feeding behavior and increased food intake, resulting in obesity and insulin resistance in these animals.



2007 ◽  
Vol 293 (3) ◽  
pp. R1037-R1045 ◽  
Author(s):  
ChuanFeng Wang ◽  
Eric Bomberg ◽  
Allen Levine ◽  
Charles Billington ◽  
Catherine M. Kotz

Recent studies show that brain-derived neurotrophic factor (BDNF) decreases feeding and body weight after peripheral and ventricular administration. BDNF mRNA and protein, and its receptor TrkB, are widely distributed in the hypothalamus and other brain regions. However, there are few reports on specific brain sites of actions for BDNF. We evaluated the effect of BDNF, given into the ventromedial nucleus of the hypothalamus (VMH), on normal and deprivation- and neuropeptide Y (NPY)-induced feeding behavior and body weight. BDNF injected unilaterally or bilaterally into the VMH of food-deprived and nondeprived rats significantly decreased feeding and body weight gain within the 0- to 24-h and the 24- to 48-h postinjection intervals. Doses effectively producing inhibition of feeding behavior did not establish a conditioned taste aversion. BDNF-induced feeding inhibition was attenuated by pretreatment of the TrkB-Fc fusion protein that blocks binding between BDNF and its receptor TrkB. VMH-injected BDNF significantly decreased VMH NPY-induced feeding at 1, 2, and 4 h after injection. In summary, BDNF in the VMH significantly decreases food intake and body weight gain, by TrkB receptor-mediated actions. Furthermore, the anorectic effects of BDNF in this site appear to be mediated by NPY. These data suggest that the VMH is an important site of action for BDNF in its effects on energy metabolism.



2004 ◽  
Vol 118 (6) ◽  
pp. 1378-1390 ◽  
Author(s):  
Jacqueline D. Van Hoomissen ◽  
Philip V. Holmes ◽  
Andrew S. Zellner ◽  
Adeline Poudevigne ◽  
Rod K. Dishman


2007 ◽  
Author(s):  
Scott H. Fraundorf ◽  
Brad E. Sheese ◽  
Lauren K. White ◽  
Mary K. Rothbart ◽  
Michael I. Posner






2008 ◽  
Vol 46 (09) ◽  
Author(s):  
M Steinkamp ◽  
N Degenkolb ◽  
H Gundel ◽  
S Kunsch ◽  
G Adler ◽  
...  


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