[Modification of malate dehydrogenase and glutamate dehydrogenase in hearts of rats exposed to a double stress (dry heat - fasting). III]. / Modificazioni dell'attivita' della malico-deidrogenasi i della glutammato-deidrogenasi nel cuore di ratti sottoposti a duplice stress (caldo secco - digiuno). Nota III.

MDH and GLDH activity modifications have been studied in heart homogenized of rats exposed to double stress (dry heat and starvation). MDH activity shows statistically significant variations only after 72 hours. This induces to suspect a decrease of energetic metabolism due to a probable substratum lack. GLDH activity shows a statistically significant decrease after 24 hours, and this decrease increases after 72 hours. This behaviour could be explained by an acclimatization reaction of such an amount to delete the hunger effect on protein catabolism.