Author(s): Block F, Schmidt W, NoldenKoch M, Schwarz M
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Abstract Proinflammatory cytokines are supposed to be involved in the pathophysiology of neuronal damage following excitotoxic lesions. We examined the effect of rolipram, a TNF-alpha-inhibitor, on excitotoxic neuronal damage. Quinolinic acid (240 nmol in 1 microl) was injected stereotactically into the striatum of male Wistar rats. Four groups of QA rats were treated i.p. with solvent, MK-801 (4 mg/kg) or rolipram (0.3 mg/kg) which was started either 6 or 24 h after QA injection and continued with daily applications for 14 days. QA injection induced neuronal damage which affected 93\% of the striatal area. MK-801 reduced this damage to 12\% of the striatal area. Treatment with rolipram when started at 6 h after QA injection resulted in neuronal damage amounting to 60\%; the result after starting at 24 h was not different from solvent (91\%). The present results demonstrate that rolipram reduces neuronal damage induced by intrastriatal QA application.
This article was published in Neuroreport
and referenced in Clinical Pharmacology & Biopharmaceutics