Selective inhibition of acetylcholinesterase in the cerebellum and hippocampus of mice following an acute treatment with malathion.

Abstract:

:Adult male ICR mice were treated by intraperitoneal injection with 250 mg/kg of bodyweight of commercial malathion (a dose corresponding to 1/12 the LD50). After 6 h, acetylcholinesterase (AChE) activity in blood, liver, and six brain regions was determined. A statistically significant inhibition was observed in whole blood (23%), liver (21%), and, in particular, the central nervous system; the greatest degree of AChE inhibition was observed in the cerebellum (45%), followed by the hippocampus (29%). There was no significant change in AChE activity in the caudate putamen, frontal cortex, midbrain, or pons medulla. These results demonstrate that the magnitude of AChE inhibition in peripheral tissues does not accurately reflect the central-inhibitory effects of malathion on AChE activity in specific brain regions.

authors

Banasik M,Stedeford T,Persad AS,Ueda K,Tanaka S,Muro-Cacho C,Harbison RD

doi

10.1080/1475636032000141908

keywords:

subject

Has Abstract

pub_date

2003-12-01 00:00:00

pages

551-5

issue

6

eissn

1475-6366

issn

1475-6374

journal_volume

18

pub_type

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