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. 1990 Jan;87(2):846–850. doi: 10.1073/pnas.87.2.846

Decreased expression of heat shock protein 70 mRNA and protein after heat treatment in cells of aged rats.

J Fargnoli 1, T Kunisada 1, A J Fornace Jr 1, E L Schneider 1, N J Holbrook 1
PMCID: PMC53363  PMID: 2300568

Abstract

The effect of aging on the induction of heat shock protein 70 (HSP70)-encoding gene expression by elevated temperatures was studied in cultures of lung- or skin-derived fibroblasts from young (5 mo) and old (24 mo) male Wistar rats. Although the kinetics of the heat shock response were found to be similar in the two age groups, we observed lower levels of induction of HSP70 mRNA and HSP70 protein in confluent primary lung and skin fibroblast cultures derived from aged animals. Additional experiments with freshly excised lung tissue showed a similar age-related decline in the heat-induced expression of HSP70.

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