Alpha2-adrenoreceptor agonist, dexmedetomidine, alters acute gene expression after global ischemia in gerbils.

Abstract:

:The effect of dexmedetomidine, a selective alpha2-adrenoreceptor agonist and neuroprotective agent on the expression of immediate early genes and heat shock protein hsp70, was studied using quantitative in situ hybridization in a global ischemia model. At the dose previously shown to be neuroprotective dexmedetomidine inhibited the expression of c-fos and hsp70 mRNA, did not affect jun-B mRNA, and enhanced the induction of NGFI-A mRNA in the postischemic gerbil hippocampus. The reduced gene expression of c-fos and hsp70 was detected in the CA1 pyramidal cells which are prone to ischemic degeneration, whereas the increased gene expression of NGFI-A was measured from the CA3 and dentate gyrus, areas relatively resistant to ischemia. These alterations in early gene expression possibly reflect the mechanisms mediating the neuroprotective effects of alpha2-adrenoreceptor agonists.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Wittner M,Sivenius J,Koistinaho J

doi

10.1016/s0304-3940(97)00585-5

subject

Has Abstract

pub_date

1997-08-29 00:00:00

pages

75-8

issue

2

eissn

0304-3940

issn

1872-7972

pii

S0304-3940(97)00585-5

journal_volume

232

pub_type

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