alexa Neuronal death and tumor necrosis factor-alpha response to glutamate-induced excitotoxicity in the cerebral cortex of neonatal rats.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): ChaparroHuerta V, RiveraCervantes MC, TorresMendoza BM, BeasZrate C

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Abstract Neuronal death and lactate dehydrogenase (LDH) activity were evaluated in the cerebral cortices of neonatal rats after exposure to monosodium L-glutamate (MSG) to induce neuroexcitotoxicity. A time-response profile for tumor necrosis factor-alpha (TNF-alpha) expression was drawn, with measurements taken every 6 h after the first dose of MSG during the first 8 postnatal days, and at days 10 and 14 after birth. An increase in neuronal loss accompanied by high LDH activity and high TNF-alpha levels was observed at 8 and 10 days. These results indicate that neuronal loss may occur via an apoptosis-like mechanism directed selectively against neurons that express glutamate receptors, mainly the N-methyl-D-aspartate, which it may be strengthen by high TNF-alpha levels through a feedback mechanism to induce cell death via apoptosis.
This article was published in Neurosci Lett and referenced in Pharmaceutica Analytica Acta

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