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Resveratrol Longevity Science Makes Dramatic U-Turn, But Resveratrol Supplements Remain Unchanged
Date:9/10/2008

sume about 35% fat calories). The fat-engorged mice did live longer on resveratrol, but this experiment is not comparable to humans eating a normal diet. [Resveratrol improves health and survival of mice on a high-calorie diet. Nature 2006 Nov 16; 444(7117):337-42]

The Sirtuin1 gene does not appear to be the "holy grail" of longevity by itself, as once claimed. The Sirtuin family of genes works in tandem with other genes, such as FOXO1 and PGc1alpha. [Interaction of aging-associated signaling cascades: inhibition of NF-kappaB signaling by longevity factors Foxos and SIRT1. Cell Mol Life Science. 2008 Apr; 65(7-8):1049-58; Acetylation of Foxo1 alters its DNA-binding ability and sensitivity to phosphorylation. Proceedings National Academy of Science: 2005 Aug 9; 102(32):11278-83]

Nor does a singular molecule such as resveratrol appear to work as well as resveratrol combined with quercetin or other small molecules. [Combined resveratrol, quercetin, and catechin treatment reduces breast tumor growth in a nude mouse model. Translational Oncology 2008 March; 1(1):19-27; Enhanced inhibition of adipogenesis and induction of apoptosis in 3T3-L1 adipocytes with combinations of resveratrol and quercetin. Life Science 2008 May 7; 82(19-20):1032-9]

Sardi says other key genes, particularly the FOXO1 gene, which plays a key role in a variety of biological processes, including metabolism, cell proliferation, and oxidative stress response, may play a stronger role than the Sirtuin1 gene in producing longevity.

At the National Library of Medicine online there are now 706 published journal reports on FOXO1, and 471 on Sirtuin1. In the gene array study published in the September 2008 issue of Experimental Gerontology, only Longevinex(R), and not calorie restriction of plain resveratrol, activated the FOXO1 gene.

Longevinex(R) has since abandoned the Sirtuin1 gene activation test as a measure of dietary supplement activity. In the Longevinex(R) mouse s
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SOURCE Resveratrol Partners, LLC
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