Linear and non-linear Mendelian randomization analyses of sex-specific associations between sleep duration and hyperuricemia

Abstract

BackgroundObservational studies have suggested a potential non-linear association between sleep duration and hyperuricemia. However, the causal nature and sex-specific differences are poorly understood. We aimed to determine the shape of sex-specific causal associations between sleep duration and hyperuricemia in the UK Biobank.MethodsLogistic regression was used to investigate the observational association between self-reported sleep duration and hyperuricemia among 387,980 white British participants (mean age: 56.9 years and 46.0% males). Linear and non-linear Mendelian Randomization (MR) analyses were performed to assess the causal association between continuous sleep duration and hyperuricemia. The causal effects of genetically predicted short (<7 h) and long (>8 h) sleep durations on hyperuricemia were further estimated, respectively.ResultsTraditional observational analysis suggested U- and J-shaped associations between sleep duration and hyperuricemia in females and males, respectively. Linear MR did not support the causal effect of sleep duration on hyperuricemia. Non-linear MR demonstrated an approximately U-shaped causal association between continuous sleep duration and hyperuricemia in overall participants and females, but not in males. Genetically predicted short sleep duration was significantly associated with hyperuricemia in females (OR [95% CI]: 1.21 [1.08–1.36]; P = 0.001), but not in males (1.08 [0.98–1.18]; P = 0.137). By contrast, genetically predicted long sleep duration was not significantly associated with the risk of hyperuricemia in either females or males.ConclusionGenetically predicted short sleep duration is a potential causal risk factor for hyperuricemia for females but has little effect on males. Long sleep duration does not appear to be causally associated with hyperuricemia.

The development and validation of a non-invasive prediction model of hyperuricemia based on modifiable risk factors: baseline findings of a health examination population cohort

“…For example, Zou et al found that short sleep is genetically associated with an increased risk of HUA among the white British population. 22 A study among Chinese government employees found that short nocturnal sleep duration was associated with a higher risk of HUA. 20 The mechanisms of the short sleep duration and HUA is still unclear.…”

Association between serum uric acid and age and the prevalence of hyperuricemia in patients with psychiatric disorders: A cross-section study

“…Thirdly, different types of diseases also affect SUA. Relevant evidence pointed out that SUA, a major antioxidant agent, might play a key role in oxidative stress [52]. Previous articles have shown that oxidative stress might be of importance in the pathophysiology of bipolar disorder, schizophrenia, and major depressive disorder [53][54][55].…”