Words similar to diet-induced
Example sentences for: diet-induced
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In contrast to other models of obesity, however, diet-induced obesity was not associated with either elevated glucocorticoid levels or reduced hypothalamic POMC mRNA.
Furthermore, the effect of adrenalectomy on hypothalamic POMC mRNA may also depend genetic background [ 6 26 27 ] . Nevertheless, we hypothesized that if adrenalectomy enhanced hypothalamic POMC mRNA in diet-induced obesity in mice, as in leptin-deficient mice, adrenalectomy would also reverse obese phenotypes in mice that became obese due to a high-fat diet.
Although the mechanisms through which adrenalectomy acts to reverse obesity is not entirely clear, it is plausible that the mechanisms entail enhanced hypothalamic POMC production [ 6 ] . Hypothalamic POMC mRNA is reduced in several forms of obesity [ 18 19 20 ] . Conversely, reversal of obese phenotypes by adrenalectomy is associated with a restoration of hypothalamic POMC mRNA tone in leptin-deficient ob/ob mice [ 6 ] . Furthermore, the melanocortin agonist MTII (which mimics the key anti-obesity product of POMC, alpha-MSH) reduces body weight in diet-induced obesity [ 21 ] . On the other hand, the effect of diet-induced obesity on hypothalamic POMC mRNA is somewhat complex and may depend on the genetic background [ 22 23 ] , and duration of the diet [ 24 25 ] or composition [ 23 ] of the diet.
As observed in leptin-deficient ob/ob mice, adrenalectomy in diet-induced obese mice led to a striking increase in hypothalamic POMC mRNA (Fig.
Nevertheless, pharmacological antagonism of glucocorticoid (type II) receptor by mifepristone (RU486) was reported to reverse high fat diet-induced obesity [ 14 ] . Since diet-induced obesity does not entail elevated glucocorticoid levels [ 15 16 17 ] , this result suggests that reduction of glucocorticoid levels would reverse obesity even when glucocorticoid levels are not elevated.
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