Chronic lithium chloride treatment has variable effects on motor behaviour and survival of mice transgenic for the Huntington's disease mutation.

Abstract:

:Expression of the Huntington's disease (HD) mutation in mice (R6/2 line) causes a progressive neurological phenotype that includes deterioration of motor function resembling that seen in HD. The current study sought to determine whether or not chronic treatment of R6/2 mice with lithium chloride would have an effect on the progression of the phenotype, in light of lithium's reported neuroprotective and anti-depressive properties. Treatment began either before or after the onset of symptoms. Chronic treatment with lithium caused a significant improvement in rotarod performance when treatment was started post- but not pre-symptomatically. There was no overall effect on survival in either group, but further analysis revealed that in the post-symptomatic group, mice could be assigned to one of two distinct groups, depending on the effects of lithium. One subgroup of mice lost weight faster, died earlier and showed rotarod performance similar to the vehicle-treated controls. The other subgroup lost weight at a normal rate, died at a similar age, but showed greatly improved motor performance compared to controls. The improvement in rotarod performance suggests that lithium may improve motor symptoms as well as depression in some HD patients.

journal_name

Brain Res Bull

journal_title

Brain research bulletin

authors

Wood NI,Morton AJ

doi

10.1016/s0361-9230(03)00141-2

keywords:

subject

Has Abstract

pub_date

2003-08-30 00:00:00

pages

375-83

issue

4

eissn

0361-9230

issn

1873-2747

pii

S0361923003001412

journal_volume

61

pub_type

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