A curated database of genes associated with dietary restriction in model organisms either from genetic manipulation experiments or gene expression profiling.
Functional SNPs have been determined for 1071 unrelated healthy individuals (502 males and 569 females) from Central Italy, 18-106 years old, divided into three gender-specific age classes defined according to demographic information and accounting for the different survivals between sexes. The categories for men were: individuals <66 years old, individuals 66-88 years old, and individuals > 88 years old. The categories for women were: individuals <73 years old, individuals 73-91 years old, and individuals > 91 years old.
Conclusions
When comparing all 3 age groups, both two-loci and three-loci interaction are significantly associated with life-expectancy in males. For females, a significant two-loci interaction occurs in females between ADA 22G>A (rs73598374) and TNF-a 238G>A (rs361525) only when comparing young and mid-aged individuals.
This gene encodes an enzyme that catalyzes the hydrolysis of adenosine to inosine. Various mutations have been described for this gene and have been linked to human diseases. Deficiency in this enzyme causes a form of severe combined immunodeficiency disease (SCID), in which there is dysfunction of both B and T lymphocytes with impaired cellular immunity and decreased production of immunoglobulins, whereas elevated levels of this enzyme have been associated with congenital hemolytic anemia. [provided by RefSeq, Jul 2008]
This gene encodes a multifunctional proinflammatory cytokine that belongs to the tumor necrosis factor (TNF) superfamily. This cytokine is mainly secreted by macrophages. It can bind to, and thus functions through its receptors TNFRSF1A/TNFR1 and TNFRSF1B/TNFBR. This cytokine is involved in the regulation of a wide spectrum of biological processes including cell proliferation, differentiation, apoptosis, lipid metabolism, and coagulation. This cytokine has been implicated in a variety of diseases, including autoimmune diseases, insulin resistance, and cancer. Knockout studies in mice also suggested the neuroprotective function of this cytokine. [provided by RefSeq, Jul 2008]
