Relationship between serum uric acid, metabolic syndrome and resting heart rate in Chinese elderly

Association Between Baseline Uric Acid and the Risk of Acute Pancreatitis: A Prospective Cohort Study

OBJECTIVES

The aim of the study is explore the association between serum uric acid (UA) and acute pancreatitis (AP) risk in a Chinese population.

METHODS

We included 124,316 participants who enrolled in the Kailuan cohort from 2006 to 2009. We fitted Cox models to estimate the correlation between UA and AP.

RESULT

During an average follow-up of 11.97 years (standard deviation, 2.16 years), 396 AP developed. The incidence rates from quartile 1 to quartile 4 of AP were 20.76, 18.78, 30.58, and 36.79 per 100,000 person-years, respectively. Multivariate analysis showed a significantly increased risk in quartile 3 (hazard ratio [HR], 1.42; 95% confidence interval [CI], 1.05-1.91) and quartile 4 (HR, 1.61; 95% CI, 1.19-2.17) compared with quartile 1. The association may be modified by alcohol use (P for interaction = 0.017). The quartile 4 group with excessive alcohol consumption showed an enormously increased risk of AP (HR, 9.09; 95% CI, 1.18-70.21) than those without (HR, 1.46; 95% CI, 1.07-2.00).

CONCLUSIONS

Elevated serum UA is an independent risk factor for AP. Surveillance of serum UA, especially among heavy drinkers, may be helpful for AP prevention.

Hyperuricemia is associated with sympathovagal imbalance in older adults

PURPOSE

This study aimed to compare heart rate variability (HRV) parameters obtained through symbolic analysis (SA), between older adults with and without hyperuricemia.

METHODS

This is a cross-sectional study including 202 community-dwelling old adults, which was clinically stratified as with or without hyperuricemia, according to the cutoff point of serum uric acid ≥ 6 mg/dL for women and ≥ 7 mg/dL for men. Successive RR intervals were recorded along 5 min and analyzed with SA method. 0 V%, 1 V% and 2 V% patterns were quantified and compared between groups. Comparisons were carried out through parametric or nonparametric tests, according to the data distribution characteristics, evaluated by Kolmogorov-Smirnov test. The significance level was set as p ≤ 0.05 for all statistical procedures.

RESULTS

The prevalence of hyperuricemia was 67.8 %, and the hyperuricemic older adults exhibited significant higher values for V0% and lower values for V2% parameters when compared to normouricemic older adults.

CONCLUSION

These results suggesting a sympathovagal imbalance in hyperuricemic older adults, characterized by greater sympathetic predominance (0 V%) and lower vagal modulation (2 V%) at rest conditions.