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- W1991978045 abstract "We characterized glutamate receptor-mediated toxicity in mouse fibroblasts expressing the human NR1a/2A or NR1a/2B NMDA receptor. After induction of NMDA receptors, cells in both lines died over a 24 h time period. This toxicity was associated with a progressive increase in the glutamate content of the media. Cell death could be prevented by including either the non-competitive NMDA receptor antagonist ketamine or the competitive antagonist D,L-AP5. Cells expressing NR1a/2A receptors were maximally protected by 0.5 mM D,L -AP-5, while those expressing NR1a/2B receptors required 2 mM D,L -AP-5 for maximal protection. The neurosteroid pregnenolone sulfate, which negatively modulates NMDA receptor function, partially protected fibroblasts containing NR1a/2A or NR1a/2B NMDA receptor constructs. However, the neurosteroid pregnenolone sulfate, which has been reported to act as a positive allosteric modulator of the NMDA receptor, had no effect on the toxicity caused by endogenous glutamate. Our results on cells expressing human NMDA receptors suggest that certain neurosteroids may protect against NMDA induced toxicity while having low neurotoxic liabilities of their own." @default.
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- W1991978045 date "2002-01-01" @default.
- W1991978045 modified "2023-09-24" @default.
- W1991978045 title "Neurosteroids and glutamate toxicity in fibroblasts expressing human NMDA receptors" @default.
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- W1991978045 doi "https://doi.org/10.1080/10298420290033223" @default.
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