Beta-N-methylamino-L-alanine neurotoxicity: requirement for bicarbonate as a cofactor.
Beta-N-methylamino-L-alanine neurotoxicity: requirement for bicarbonate as a cofactor.
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β-N-甲氨基-L-丙氨酸神经毒性:需要碳酸氢盐作为辅助因子。
DOI:
10.1126/science.3136549
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发表时间:
1988
期刊:
影响因子:
--
通讯作者:
Choi,DW
中科院分区:
文献类型:
--
作者:
Weiss,JH;Choi,DW
Ingestion of the excitotoxic cycad seed amino acid β-N-methylamino-L-alanine may be responsible for the neuronal degeneration associated with Guam amyotrophic lateral sclerosis-parkinsonism-dementia in man. However, the basis for the central neurotoxicity of β-N-methylamino-L-alanine has been unclear, as it lacks the omega acidic (or equivalent electronegative) moiety characteristic of other excitatory amino acids. β-N-methylamino-L-alanine produced neurotoxic and neuroexcitatory effects in murine cortical cell cultures only when physiological concentrations of bicarbonate were available in the extracellular bathing medium. Bicarbonate may interact noncovalently with β-N-methylamino-L-alanine to produce, in combination, a molecular configuration that activates glutamate receptors.
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