Tumor Necrosis Factor-alpha Confers Resistance to Hypoxic Injury in the Adult Mammalian Cardiac Myocyte

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Abstract

Background

Previous studies in isolated cardiac myocytes have shown that tumor necrosis factor (TNF)-alpha provokes increased expression of 27- and 70-kD stress proteins as well as manganese superoxide dismutase, suggesting that TNF-alpha might play a role in mediating stress responses in the heart.

Conclusions

Taken together, the above observations demonstrate that TNF-alpha pretreatment confers resistance to hypoxic stress in the adult cardiac myocyte through a novel mechanism that appears to be different from but not necessarily exclusive of the protective response conferred by HSP 72 expression. (Circulation. 1998;97:1392-1400.)

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