Enhancement of endogenous excitatory amino acids by theophylline does not modify the behavioral and histological consequences of forebrain ischemia.
The neuroprotective role of endogenous adenosine during forebrain ischemia elicited by 4-vessel occlusion in rats was assessed using the adenosine antagonist, theophylline (32 mg/kg). Despite an increase in the release of glutamate in the hippocampus during ischemia, theophylline did not alter the neurological and histological outcomes. These results indicate that endogenous adenosine does not act as an endogenous neuroprotector by modulating glutamate release in this model.
Lekieffre
D
D
Laboratoire de Pharmacologie, Faculté des Sciences Pharmaceutiques et Biologiques Université René Descartes, Paris, France.
Callebert
J
J
Plotkine
M
M
Allix
M
M
Boulu
R G
RG
D000241:Adenosine / Q000037:antagonists & inhibitors*; D000596:Amino Acids / Q000378:metabolism*; D000818:Animals; D002545:Brain Ischemia / Q000378:metabolism* / Q000473:pathology / Q000523:psychology; D003956:Dialysis; D008297:Male; D016548:Prosencephalon / Q000098:blood supply*; D011597:Psychomotor Performance / Q000187:drug effects*; D051381:Rats; D017208:Rats, Wistar; D013806:Theophylline / Q000494:pharmacology*
D000596:Amino Acids; D013806:Theophylline; D000241:Adenosine