Abstract
In adult Wistar rats both limiting of the food intake for 2 hours per day, or refeeding for 72 and 120 hours after a previous 72-hour fast, led to an increase in the number of fat cells in epididymal and parametrial adipose tissue, respectively. This conclusion is based on the following findings: (a) an absolute increase in the DNA content of the epididymal adipose tissue, (b) an increase in the 14C-2-thymidine incorporation into DNA of epididymal and parametrial adipose tissue, and (c) histologically there is an increase of smaller fat cells which are more uniform in size. The mainly perivascular appearance of the new small fat cells, and the perivascular localization of cells labeled with 14C-2-thymidine, provide further evidence that refeeding after a previous fast and meal feeding produce adipose tissue growth by enhanced cell proliferation.
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