Envejecimiento y restricción calórica

Investigando cosas para mi tesis me topé con este abstract de 1999. Aparentemente, por lo menos en músculo esquelético de ratón, la restricción calórica retarda el envejecimiento por menor daño macromolecular. Aqui les dejo el abstract:

Gene Expression Profile of Aging and Its Retardation by Caloric Restriction

Cheol-Koo Lee, ¹³ Roger G. Klopp, ² Richard Weindruch, ^4* Tomas A. Prolla^3*

Science 27 August 1999:
Vol. 285. no. 5432, pp. 1390 - 1393
DOI: 10.1126/science.285.5432.1390

The gene expression profile of the aging process was analyzed in skeletal muscle of mice. Use of high-density oligonucleotide arrays representing 6347 genes revealed that aging resulted in a differential gene expression pattern indicative of a marked stress response and lower expression of metabolic and biosynthetic genes. Most alterations were either completely or partially prevented by caloric restriction, the only intervention known to retard aging in mammals. Transcriptional patterns of calorie-restricted animals suggest that caloric restriction retards the aging process by causing a metabolic shift toward increased protein turnover and decreased macromolecular damage.

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