Studies on the morphologic and metabolic changes of human fat cells maintained in culture

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Abstract
Summary Specimens of human adipose tissue were maintainedin vitro for one week and cell size as well as metabolic rates determined before and after the culture period. Large fat cells from obese donors decreased towards ‘normal’ cell size while this was not the case for cells from non-obese donors. This decrease was probably due to the increased lipolysis found while glucose incorporation was unchanged. Analogous to the findings with obese subjects placed on a weight-reducing regimen, the present data show that when large fat cells are removed from their anabolic, hyperinsulinic environment, ‘normalization’ in cell size occurs.