Effect of Cold Adaptation on Liver Peroxisomes and Peroxisomal Oxidative Activities of Rat. A Morphometric/Stereologic and Biochemical Study

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Abstract
The variations in liver peroxisomes and in peroxisomal enzymes were studied in the rat during adaptation to cold (5 °C). An increase in the number and in the volume and surface fractions of peroxisomes was detected by day 7. Qualitative ultrastructural changes of the peroxisome compartment were observed. Several peroxisomal enzyme activities were found to exhibit a significant increase with different temporal patterns. These results are discussed with regard to the possible contribution of liver peroxisomes to non-shivering thermogenesis.

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