Abstract：
:Observational studies suggest associations of triglyceride levels with longevity and frailty. This study aimed to test whether the associations are causal. We used data from the Rugao Longevity and Ageing Study, a population-based cohort study performed in Rugao, China. A variant in the APOA5 gene region (rs662799) was used as the genetic instrument. Mendelian randomization (MR) analyses were performed to examine the associations of genetically predicted triglycerides with two ageing phenotypes - longevity ( ≥95 years) and frailty (modified Fried frailty phenotype and Rockwood frailty index). C allele of rs662799 was robustly associated with higher triglyceride levels in the comparison group (β = 0.301 mmol/L per allele, p < 0.001), with an F statistic of 95.3 and R2 = 0.040. However MR analysis did not provide strong evidence for an association between genetically predicted triglyceride levels and probability of longevity (OR: 0.61; 95% CI: 0.35, 1.07 per 1 mmol/L increase in triglycerides). In the ageing arm (70-84 years), genetically predicted triglyceride levels were not associated with the frailty index (β = 0.008; 95% CI: -0.013, 0.029) or the frailty phenotype (OR: 1.91; 95% CI: 0.84, 4.37). In conclusion, there is currently a lack of sufficient evidence to support causal associations of triglyceride levels with longevity and frailty in elderly populations.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Liu Z,Burgess S,Wang Z,Deng W,Chu X,Cai J,Zhu Y,Shi J,Xie X,Wang Y,Jin L,Wang Xdoi
10.1038/srep41579subject
Has Abstractpub_date
2017-01-30 00:00:00pages
41579issn
2045-2322pii
srep41579journal_volume
7pub_type
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