Bioenergetics of different brain areas after experimental subarachnoid hemorrhage in rats

Fulvio Marzatico, Paolo Gaetani, Riccardo Rodriguez Y Baena, Vittorio Silvani, Pietro Paoletti, Gianni Benzi

Research output: Contribution to journalArticlepeer-review

Abstract

We studied energy metabolism after experimental subarachnoid hemorrhage in rats. Four different cerebral areas were tested: frontal cortex, occipital cortex, hippocampus, and brainstem. of the following enzymatic activities was evaluated: in the homogenate: hexokinase, phosphofnictokinase, and lactate dehydrogenase for the glycolytic pathway, and glucose-6-phosphate dehydrogenase for the hexose monophosphate shunt; in the purified non synaptic mitochondria: NAD+-isocitrate dehydrogenase, citrate synthase, and succinate dehydrogenase for the Krebs cycle, and cytochrome oxidase for the electron transfer chain. We also evaluated some parameters related to the respiration of nonsynaptic mitochondria (State 3, State 4, uncoupled state, respiratory control ratio, and ADP: O ratio). Subarachnoid hemorrhage did not significantly affect V„ of the enzymatic activities related to anaerobic and aerobic metabolism; however, mitochondrial respiration was affected, particularly in the presence of NADH-producing substrates (glutamate+ malate).

Original languageEnglish
Pages (from-to)378-384
Number of pages7
JournalStroke
Volume19
Issue number3
Publication statusPublished - 1983

Keywords

  • Enzymes
  • Mitochondria
  • Rats
  • Subarachnoid hemorrhage

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Clinical Neurology
  • Advanced and Specialised Nursing
  • Neuroscience(all)

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