Thursday, December 19, 2013

We are not the only ones looking into Sirtuins and how to reduce cellular stress response in the Brain:

Cellular stress response, sirtuins and UCP proteins in Alzheimer disease: role of vitagenes

Carolin Cornelius1, Angela Trovato Salinaro1, Maria Scuto1, Vincenzo Fronte1, Maria Teresa Cambria1, Manuela Pennisi2, Rita Bella2, Pietro Milone3, Antonio Graziano3, Rosalia Crupi4, Salvatore Cuzzocrea4, Giovanni Pennisi2 and Vittorio Calabrese1*
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Immunity & Ageing 2013, 10:41  doi:10.1186/1742-4933-10-41
Published: 17 October 2013

Abstract

Alzheimer’s Disease (AD) is a neurodegenerative disorder affecting up to one third of individuals reaching the age of 80. Different integrated responses exist in the brain to detect oxidative stress which is controlled by several genes termed Vitagenes. Vitagenes encode for cytoprotective heat shock proteins (Hsp), as well as thioredoxin, sirtuins and uncouple proteins (UCPs). In the present study we evaluate stress response mechanisms in plasma and lymphocytes of AD patients, as compared to controls, in order to provide evidence of an imbalance of oxidant/antioxidant mechanisms and oxidative damage in AD patients and the possible protective role of vitagenes.
We found that the levels of Sirt-1 and Sirt-2 in AD lymphocytes were significantly higher than in control subjects. Interestingly, analysis of plasma showed in AD patients increased expression of Trx, a finding associated with reduced expression of UCP1, as compared to control group.
This finding can open up new neuroprotective strategies, as molecules inducing this defense mechanisms can represent a therapeutic target to minimize the deleterious consequences associated to oxidative stress, such as in brain aging and neurodegenerative disorders.

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