Age-related changes in glutamine synthetase activity of rat brain, liver and heart.

Abstract:

:Glutamine synthetase (GS) activity was measured in whole brain, different brain areas, liver and heart of 23- to 26-month-old rats, and then compared to matched animals of 3 months. A significant increase of GS activity was found in whole brain (25%) of old rats, as well as in all brain areas studied, but particularly in midbrain (36%), hypothalamus (32%), brainstem (32%), striatum (27%) and cerebellum (22%). A significant decrease of GS activity (21%) was found in liver and no significant difference in heart of old rats when compared to matched animals of 3 months. The present results suggest that an increase of GS activity in brain of old rats may be an adaptive phenomenon, and the regulatory mechanisms for GS with increasing age are different, depending on the tissues.

journal_name

Gerontology

journal_title

Gerontology

authors

Cao Danh H,Strolin Benedetti M,Dostert P

doi

10.1159/000212686

subject

Has Abstract

pub_date

1985-01-01 00:00:00

pages

95-100

issue

2

eissn

0304-324X

issn

1423-0003

journal_volume

31

pub_type

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