Abstract:
:Murine spinal cord primary mixed cultures were treated with the respiratory inhibitor, rotenone, to mimic hypoxic conditions. Under these conditions neurons rapidly underwent oncosis (necrosis) with a complete loss in viability occurring within 260 min; however, astrocytes, which accounted for most of the cell population, died more slowly with 50% viability occurring at 565 min. Inosine preserved both total cell and neuronal viability in a concentration-dependent manner. The time of inosine addition relative to hypoxic insult was critical with the most effective protection occurring when inosine was added just prior to or within 5 min after insult. Inosine was ineffective when added 30 min after hypoxic insult. The effect of guanosine was similar to that of inosine. Treatment of cultures with BCX-34, a purine nucleoside phosphorylase inhibitor, prevented protection by inosine or guanosine, suggesting involvement of a purine nucleoside phosphorylase in the nucleoside protective effect.
journal_name
Brain Resjournal_title
Brain researchauthors
Litsky ML,Hohl CM,Lucas JH,Jurkowitz MSdoi
10.1016/s0006-8993(99)01086-0subject
Has Abstractpub_date
1999-03-13 00:00:00pages
426-32issue
2eissn
0006-8993issn
1872-6240pii
S0006-8993(99)01086-0journal_volume
821pub_type
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