Nicotine and neurodegeneration in ageing.

Abstract:

:Impairment in cholinergic systems is a highly consistent finding in human dementia. Among cholinergic markers, marked decreases in nicotine binding have been most consistently observed in the telencephalic regions of demented patients and are thought to contribute to the cognitive deficits associated with ageing and age-related neurodegenerative diseases. New evidence that the cholinergic system has a specific pathogenic role in the neurodegenerative alterations of aged and, especially, demented patients is fast accumulating. Both in vivo and in culture, nicotine protects striatal, hippocampal and cortical neurons against the neurotoxicity induced by excitotoxic amino acids as well as the toxicity caused by beta-amyloid, the major component of senile plaques. Further support for the implication of nicotinic receptors in brain ageing is come from recent studies on transgenic animals lacking nicotinic receptor subtypes, which shed light on the mechanisms of nicotine neuroprotection and neurotoxicity.

journal_name

Toxicol Lett

journal_title

Toxicology letters

authors

Zanardi A,Leo G,Biagini G,Zoli M

doi

10.1016/s0378-4274(01)00502-1

keywords:

subject

Has Abstract

pub_date

2002-02-28 00:00:00

pages

207-15

issue

1-3

eissn

0378-4274

issn

1879-3169

pii

S0378427401005021

journal_volume

127

pub_type

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