Abstract:
:Quinolinic acid (QUIN) is a tryptophan metabolite which has been found to be an excitotoxin in rats, although its toxicity in humans is unknown. QUIN has been implicated in the pathogenesis of AIDS dementia complex. This study examined the effect of QUIN on human fetal brain tissue in vitro. After at least 14 days in vitro, QUIN was added to the cultures in the feeding medium, and lactate dehydrogenase (LDH) efflux at 20 h and neuronal morphology were used as a measure of neuronal injury. LDH levels in media from cultures exposed to QUIN concentrations of 5 and 10 mM were consistently elevated compared to controls. Overall, LDH levels in media from cultures exposed to lower QUIN concentrations did not differ significantly from controls. These data are comparable to animal in vitro studies, and support the hypothesis that QUIN is toxic to human central nervous system neurons and further strengthen its potential role in the pathogenesis of AIDS dementia complex.
journal_name
J Neuroviroljournal_title
Journal of neurovirologyauthors
Kerr SJ,Armati PJ,Brew BJdoi
10.3109/13550289509111027subject
Has Abstractpub_date
1995-12-01 00:00:00pages
375-80issue
5-6eissn
1355-0284issn
1538-2443journal_volume
1pub_type
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journal_title:Journal of neurovirology
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journal_title:Journal of neurovirology
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