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Association of hyperuricemia with valvular heart disease and the modifying effect of obesity
Seung Min Jung1, Sang-Hyuk Jung2,3, Su-Nam Lee4
1Division of Rheumatology, Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
Insights
Elevated serum uric acid (SUA) levels, or hyperuricemia, are linked to increased valvular heart disease (VHD) risk. This association was observed across a large cohort, with very high SUA levels posing the greatest risk for VHD development.
Area of Science:
- Cardiology
- Metabolic Health
- Epidemiology
Background:
- Hyperuricemia is associated with cardiovascular disease, but its link to incident valvular heart disease (VHD) is unclear.
- Understanding this relationship is crucial for cardiovascular risk stratification.
Purpose of the Study:
- To investigate the association between serum uric acid (SUA) levels and incident VHD.
- To explore the influence of weight management and obesity on this association.
Main Methods:
- Utilized UK Biobank cohort data from 462,705 participants.
- Categorized participants by SUA levels: normal (<6.0 mg/dL), high (6.0-8.9 mg/dL), and very high (≥9.0 mg/dL).
- Assessed VHD risk based on SUA, metabolic profiles, BMI, and waist circumference over a 12.3-year follow-up.
Main Results:
- Significantly higher adjusted VHD risk observed with very high SUA (2.31x) and high SUA (1.25x) compared to normal SUA.
- A dose-response relationship between SUA levels and VHD risk was evident, particularly with metabolic disorders.
- Obesity's impact on VHD was more pronounced at lower SUA levels (<9.0 mg/dL).
Conclusions:
- Hyperuricemia is significantly associated with an increased risk of incident valvular heart disease.
- Elevated SUA levels may be relevant for VHD risk stratification.
- Weight management's role in mitigating VHD risk in hyperuricemia warrants further investigation.
Background/Aims:
Hyperuricemia has been widely associated with cardiovascular health, but its relationship with incident valvular heart disease (VHD) remains uncertain. This study investigated the association between hyperuricemia and VHD, and further explored the role of weight management within this context.
Methods:
Participants from the UK Biobank cohort were categorized into three groups based on serum uric acid (SUA) level: normal (< 6.0 mg/dL), high (6.0-8.9 mg/dL), and very high (≥ 9.0 mg/dL). The risk of VHD associated with SUA level was assessed in the overall population and across subgroups with differing metabolic profiles. To examine the impact of obesity on VHD development, the relative risk of VHD was analyzed based on body mass index and waist circumference.
Results:
Among 462,705 participants, 340,793 (73.7%) had normal SUA levels, 118,861 (25.7%) had high levels, and 3,051 (0.7%) had very high levels. Over an average follow-up period of 12.3 years, the adjusted risk of VHD was significantly higher in individuals with very high SUA, followed by those with high and normal SUA (2.31 vs. 1.25 vs. reference, respectively). Stratifying VHD risk by metabolic disorders revealed a dose-response relationship between SUA level and VHD risk. The impact of obesity on VHD development was notable among individuals with SUA below 9.0 mg/dL, but less pronounced in those with SUA exceeding 9.0 mg/dL.
Conclusion:
This finding suggests a significant association between hyperuricemia and VHD, highlighting the potential relevance of elevated SUA levels in VHD risk stratification.
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