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Buckminsterfullerenol free radical scavengers reduce excitotoxic and apoptotic death of cultured cortical neurons.

Abstract：

:Novel anti-oxidants based on the buckminsterfullerene molecule were explored as neuroprotective agents in cortical cell cultures exposed to excitotoxic and apoptotic injuries. Two polyhydroxylated C60 derivatives, C60(OH)n, n = 12, and C60(OH)nOm, n = 18-20, m = 3-7 hemiketal groups, demonstrated excellent anti-oxidant capabilities when tested by electron paramagnetic spectroscopy with a spin-trapping agent and a hydroxyl radical-generating system. These water-soluble agents decreased excitotoxic neuronal death following brief exposure to NMDA (by 80%), alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA; by 65%), or kainate (by 50%). Electrophysiology and tracer 45Ca(2+)-uptake studies verified that buckminsterfullerenois are not NMDA or AMPA/kainate receptor antagonists. Buckminsterfullerenols also reduced neuronal apoptosis induced by serum deprivation. These results support the idea that oxidative stress contributes to both excitotoxic and apoptotic neuronal death, and furthermore suggest that fullerenols represent a novel type of biological anti-oxidant compound.

journal_name

Neurobiol Dis

journal_title

Neurobiology of disease

authors

Dugan LL,Gabrielsen JK,Yu SP,Lin TS,Choi DW

doi

10.1006/nbdi.1996.0013

subject

Has Abstract

pub_date

1996-04-01 00:00:00

pages

129-35

issue

2

eissn

0969-9961

issn

1095-953X

pii

S0969-9961(96)90013-3

journal_volume

3

pub_type

杂志文章

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