文摘
The rs1333049 (G/C) polymorphism located on chromosome 9p21.3 is a candidate to influence extreme longevity owing to its association with age-related diseases, notably coronary artery disease (CAD). We compared allele/genotype distributions of rs1333049 in cases (centenarians) and controls (younger adults, without (healthy) or with CAD) in two independent cohorts: Spanish (centenarians: n--52, 128 women, 100-11?years; healthy controls: n--43, 212 women, age <50?years; CAD controls: n--8, 32 women, age ?5?years) and Japanese (centenarians: n--42, 623 women, 100-15?years; healthy controls: n--20, 511 women, < 60?years; CAD controls: n--95, 45 women, age ?5?years). The frequency of the “risk-C-allele tended to be lower in Spanish centenarians (47.0?%) than in their healthy (52.9?%, P--.088) or CAD controls (55.1?%, P--.078), and significant differences were found in genotype distributions (P--.034 and P--.045), with a higher frequency of the GG genotype in cases than in both healthy and CAD controls as well as a lower proportion of the CG genotype compared with healthy controls. In the Japanese cohort, the main finding was that the frequency of the C-allele did not differ between centenarians (46.4?%) and healthy controls (47.3?%, P--.602), but it was significantly lower in the former than in CAD controls (57.2?%, P-lt;-.001). Although more research is needed, the present and recent pioneer findings (Rejuvenation Res 13:23-6, 2010) suggest that the rs1333049 polymorphism could be among the genetic contributors to exceptional longevity in Southern European populations, albeit this association does not exist in the healthy (CAD-free) Japanese population.