Impaired recognition memory and decreased prefrontal cortex spine density in aged female rats.

Abstract:

:Aged F344 female rats (21 months) showed decreased performance, as compared to young rats (4 months), on an object recognition memory task. Golgi impregnation measured dendritic spine density of pyramidal neurons in the prefrontal cortex (layer II-III), a brain area important for recognition memory. Densities of spines in aged rats were 16% lower in tertiary, apical dendrites, but not significantly different in secondary basal dendrites. Concurrent measures of memory and spine density in the young and aged subjects show that age-related declines in recognition memory are associated with decreased cortical spine density.

journal_name

Ann N Y Acad Sci

authors

Wallace M,Frankfurt M,Arellanos A,Inagaki T,Luine V

doi

10.1196/annals.1379.026

subject

Has Abstract

pub_date

2007-02-01 00:00:00

pages

54-7

eissn

0077-8923

issn

1749-6632

pii

1097/1/54

journal_volume

1097

pub_type

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