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Are centenarians genetically predisposed to lower disease risk?

机译:百岁老人在遗传上是否倾向于降低疾病风险?

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摘要

Our study purpose was to compare a disease-related polygenic profile that combined a total of 62 genetic variants among (i) people reaching exceptional longevity, i.e., centenarians (n = 54, 100–108 years, 48 women) and (ii) ethnically matched healthy controls (n = 87, 19–43 years, 47 women). We computed a ‘global’ genotype score (GS) for 62 genetic variants (mutations/polymorphisms) related to cardiometabolic diseases, cancer or exceptional longevity, and also specific GS for main disease categories (cardiometabolic risk and cancer risk, including 36 and 24 genetic variations, respectively) and for exceptional longevity (7 genetic variants). The ‘global’ GS was similar among groups (centenarians: 31.0 ± 0.6; controls 32.0 ± 0.5, P = 0.263). We observed that the GS for hypertension, cancer (global risk), and other types of cancer was lower in the centenarians group compared with the control group (all P < 0.05), yet the difference became non significant after adjusting for sex. We observed significant between-group differences in the frequency of GSTT1 and GSTM1 (presence/absence) genotypes after adjusting for multiple comparisons. The likelihood of having the GSTT1 low-risk (functional) allele was higher in centenarians (odds ratio [OR] 5.005; 95% confidence interval [CI], 1.810–13.839), whereas the likelihood of having the GSTMI low-risk (functional) allele was similar in both groups (OR 1.295; 95% CI, 0.868 –1.931). In conclusion, we found preliminary evidence that Spanish centenarians have a lower genetic predisposition for cancer risk. The wild-type (i.e., functional) genotype of GSTT1, which is associated with lower cancer risk, might be associated with exceptional longevity, yet further studies with larger sample sizes must confirm these findings.
机译:我们的研究目的是比较与疾病相关的多基因谱图,该谱图组合了(i)达到超长寿命的人,即百岁老人(n = 54、100-108岁,48位妇女)和(ii)匹配健康对照者(n = 87,19-43岁,47位女性)。我们计算了62种与心脏代谢疾病,癌症或长寿相关的遗传变异(突变/多态性)的“全球”基因型评分(GS),还针对主要疾病类别(心脏代谢风险和癌症风险,包括36和24种遗传)变异)和超长寿命(7个遗传变异)。各组之间的“全球” GS相似(百岁老人:31.0±0.6;对照组32.0±0.5,P = 0.263)。我们观察到,百岁老人组的高血压,癌症(全球风险)和其他类型癌症的GS低于对照组(所有P <0.05),但在调整性别后,差异变得不显着。在调整了多个比较之后,我们观察到了GSTT1和GSTM1(存在/不存在)基因型频率的显着组间差异。百岁老人中具有GSTT1低风险(功能性)等位基因的可能性更高(优势比[OR] 5.005; 95%置信区间[CI],1.810-13.839),而具有GSTMI低风险(功能性)等位基因的可能性更高)两组的等位基因相似(OR 1.295; 95%CI,0.868 –1.931)。总之,我们发现初步证据表明,西班牙百岁老人的遗传易感性较低。 GSTT1的野生型(即功能性)基因型与较低的癌症风险有关,可能与超长的寿命有关,但是对更大样本量的进一步研究必须证实这些发现。

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