PMID: 9555055May 16, 1998Paper

Caloric restriction retards the aging associated changes in gamma-aminobutyric acidA receptor gene expression in rat cerebellum

Brain Research. Molecular Brain Research
M C Mhatre, M K Ticku

Abstract

It is widely accepted that calorie restriction is an effective way of delaying the aging process. Also, there is an indication that the beneficial effects exerted by dietary manipulation may be due to a direct effect at the molecular level like gene expression. The studies were conducted to determine whether calorie restriction prevents any age-related changes in the structural and molecular aspects of the GABAA-BZ receptor. In aged (24-month old diet ad libitum) rats, the binding of [35S]t-butyl-bicyclophosphorothionate (TBPS) was significantly reduced in the cerebellum. In contrast, [35S]TBPS binding remained unchanged in the cerebellum of calorie restricted old rats. In order to evaluate the molecular basis of these changes, the alpha sub-unit mRNA levels were measured. The GABAA receptor alpha1 sub-unit mRNA level remained unchanged in both the old groups of rats. The alpha2 subunit mRNA level was significantly decreased in the cerebellum of aged rats (24-month old ad libitum), whereas it remained unchanged in the cerebellum of calorie restricted old animals. These findings indicate a selective age and diet related modulation in the stoichiometry of the GABAA receptor in aging.

References

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Citations

Aug 31, 2001·Pharmacology, Biochemistry, and Behavior·S I WikinskiM C Rubio
Jun 16, 2011·Pharmacology, Biochemistry, and Behavior·Sandra Olvera-Hernández, Alonso Fernández-Guasti
Dec 1, 2004·Alcohol and Alcoholism : International Journal of the Medical Council on Alcoholism·Travis J Worst, Kent E Vrana

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