Abstract:
:The aim of the present investigation was to assess neuroprotection exerted by diazepam (0.1-25 microM) in rat cortical brain slices subjected to oxygen-glucose deprivation and reoxygenation. Neuronal injury and neuroprotection were assessed by measuring the release of glutamate and lactate dehydrogenase and tissue water content. Results demonstrate that diazepam exerted neuroprotective effects according to a "U-shaped", hormetic-like, concentration-response curve, with an efficacy window of 0.5-5 microM concentration. Flumazenil (20 microM) fully antagonised neuroprotection afforded by 5 microM diazepam. In conclusion, the hormetic response of diazepam should be taken into consideration when designing experiments aimed at assessing diazepam neuroprotection against ischemia/reoxygenation injury.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Ricci L,Valoti M,Sgaragli G,Frosini Mdoi
10.1016/j.ejphar.2006.12.030subject
Has Abstractpub_date
2007-04-30 00:00:00pages
80-4issue
1-3eissn
0014-2999issn
1879-0712pii
S0014-2999(07)00051-9journal_volume
561pub_type
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