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Am J Physiol Regul Integr Comp Physiol 233: R162-R168, 1977;
0363-6119/77 $5.00
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AJP - Regulatory, Integrative and Comparative Physiology, Vol 233, Issue 3 162-R168, Copyright © 1977 by American Physiological Society

ARTICLES

Comparison of metabolic alterations in hypothalamic and high fat diet-induced obesity

S. Inoue, L. A. Campfield and G. A. Bray

The heterogeneous nature of the experimental obesities induced by ventromedial hypothalamic (VMH) lesion and high fat diet (HFD) have been demonstrated by comparing VMH-lesioned and sham-operated rats fed a HFD or low fat diet (LFD). VMH rats had increased fat mass serum insulin and serum triglycerides but lower serum glucagon and smaller salivary glands than sham-operated animals. The body weight of HFD obese rats was intermediate between VMH and sham-operated animals on the LDF. Liver and fat pad weights showed effects of lesions and diet. Diet did not affect plasma glucagon or insulin. Pair-feeding VMH rats with sham-operated rats prevented weight gain but did not prevent the increase in insulin and fall in glucagon. Studies of insulin secretion from isolated perifused islets showed that basal and both phases of stimulated secretion were significantly increased in VMH groups. The changes in plasma insulin, plasma glucagon, and salivary gland weight in VMH groups are interpreted as showing decreased activity of the sympathetic nervous system following VMH lesions.


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C. Wang, E. Bomberg, A. Levine, C. Billington, and C. M. Kotz
Brain-derived neurotrophic factor in the ventromedial nucleus of the hypothalamus reduces energy intake
Am J Physiol Regulatory Integrative Comp Physiol, September 1, 2007; 293(3): R1037 - R1045.
[Abstract] [Full Text] [PDF]


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