Journal of Lipid Research, Vol 26, 1036-1046, Copyright © 1985 by Lipid Research, Inc.
Longitudinal study of adipose cell size in the dorsoscapular and perirenal depots of the growing rabbit
Y Reyne, J Teyssier, J Nougues and S Tebibel
The changes in fat cell size during normal growth of New Zealand rabbits
were investigated longitudinally with serial dorsoscapular and perirenal
fat biopsies. A remarkably complex pattern of changes appeared when
individual evolutions were considered. About 50% of the rabbits were
characterized by "significant drops" of mean diameter during fat tissue
growth with shifting of distributions toward the smaller cells. These
"drops" could not be attributed to regional variation observed within each
depot or to growth or food intake disorders. Differences in behavior of
perirenal and dorsoscapular depots were noted. The "drops" occurred earlier
in perirenal than in dorsoscapular depots. The meaning of these "drops"
remains unclear, but the results suggest that they may be due to a
discontinuous recruitment of new observable cells. These results are
discussed in relation to the hypothesis of a "critical size" of adipocytes.