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Kopecký, J. et al.

Energy metabolism of adipose tissue--physiological aspects and target in obesity treatment.

Body fat content is controlled, at least in part, by energy charge of adipocytes. In vitro studies indicated that lipogenesis as well as lipolysis depend on cellular ATP levels. Respiratory uncoupling may, through the depression of ATP synthesis, control lipid metabolism of adipose cells. Expression of some uncoupling proteins (UCP2 and UCP5) as well as other protonophoric transporters can be detected in the adipose tissue. Expression of other UCPs (UCP1 and UCP3) can be induced by pharmacological treatments that reduce adiposity. A negative correlation between the accumulation of fat and the expression of UCP2 in adipocytes was also found. Ectopic expression of UCP1 in the white fat of aP2-Ucp1 transgenic mice mitigated obesity induced by genetic or dietary factors. In these mice, changes in lipid metabolism of adipocytes were associated with the depression of intracellular energy charge. Recent data show that AMP-activated protein kinase may be involved in the complex changes elicited by respiratory uncoupling in adipocytes. Changes in energy metabolism of adipose tissue may mediate effects of treatments directed against adiposity, dyslipidemia, and insulin resistance.[1]

References

Energy metabolism of adipose tissue--physiological aspects and target in obesity treatment. Kopecký, J., Rossmeisl, M., Flachs, P., Brauner, P., Sponarová, J., Matejková, O., Prazák, T., Růzicková, J., Bardová, K., Kuda, O. Physiological research / Academia Scientiarum Bohemoslovaca. (2004) [Pubmed]

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