Nitric oxide is involved in heat-induced HSP70 accumulation

FEBS Lett. 1995 Aug 21;370(3):159-62. doi: 10.1016/0014-5793(95)00801-f.

Abstract

Heat shock potentiated the nitric oxide production (EPR assay) in the liver, kidney, heart, spleen, intestine, and brain. The heat shock-induced sharp transient increase in the rate of nitric oxide production preceded the accumulation of heat shock proteins (HSP70) (Western blot analysis) as measured in the heart and liver. In all organs the nitric oxide formation was completely blocked by the NO-synthase inhibitor N omega-nitro-L-arginine (L-NNA). L-NNA also markedly attenuated the heat shock-induced accumulation of HSP70. The results suggests that nitric oxide is involved in the heat shock-induced activation of HSP70 synthesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Oxidoreductases / antagonists & inhibitors
  • Animals
  • Arginine / analogs & derivatives
  • Arginine / pharmacology
  • Brain / metabolism
  • Brain Chemistry
  • HSP70 Heat-Shock Proteins / biosynthesis
  • HSP70 Heat-Shock Proteins / drug effects
  • HSP70 Heat-Shock Proteins / metabolism*
  • Hot Temperature*
  • Intestinal Mucosa / metabolism
  • Intestines / chemistry
  • Kidney / chemistry
  • Kidney / metabolism
  • Liver / chemistry
  • Liver / metabolism
  • Male
  • Myocardium / chemistry
  • Myocardium / metabolism
  • Nitric Oxide / analysis
  • Nitric Oxide / metabolism*
  • Nitric Oxide Synthase
  • Nitroarginine
  • Rats
  • Rats, Wistar
  • Spleen / chemistry
  • Spleen / metabolism

Substances

  • HSP70 Heat-Shock Proteins
  • Nitroarginine
  • Nitric Oxide
  • Arginine
  • Nitric Oxide Synthase
  • Amino Acid Oxidoreductases