Abstract:
:The neuroprotective efficacy of 2-aminobicyclo[2.1.1]hexane-2,5-dicarboxylic acid-I (ABHxD-I), a rigid agonist of metabotropic glutamate receptors, was studied using a 3-min global cerebral ischaemia model in Mongolian gerbils and the hypoxia/ischaemia model in 7-day-old rats. The effects on brain damage of ABHxD-I (30 mg/kg, intraperitoneally or 7.5 microg intracerebroventricularly) administered 30 min before global ischaemia or 30 min after hypoxia/ischaemia was evaluated 14 days after the insults. Treatment of adult gerbils with ABHxD-I injected i.c.v. but not systemically, prevented post-ischaemic hyperthermia and substantially reduced brain damage. These effects may reflect low permeability of the adult blood-brain barrier to ABHxD-I, and the role of reduced body and brain temperature in neuroprotection after its i.c.v. administration. ABHxD-I given either i.p. or i.c.v. to developing rats reduced brain damage by 55 and 37%, respectively, without affecting the body temperature. Due to immaturity and increased post-ischaemic permeability of the blood-brain barrier in developing rats, ABHxD-I may induce neuroprotection by direct interference with brain metabotropic glutamate receptors.
journal_name
Resuscitationjournal_title
Resuscitationauthors
Makarewicz D,Gadamski R,Ziembowicz A,Kozikowski AP,Wroblewski JT,Lazarewicz JWdoi
10.1016/j.resuscitation.2005.05.018keywords:
subject
Has Abstractpub_date
2006-01-01 00:00:00pages
119-26issue
1eissn
0300-9572issn
1873-1570pii
S0300-9572(05)00241-8journal_volume
68pub_type
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