Relationships among hyperuricemia, metabolic syndrome, and endothelial function
Hirofumi Tomiyama1, Yukihito Higashi, Bonpei Takase
1Second Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan. tomiyama@tokyo-med.ac.jp
American Journal of Hypertension
|April 15, 2011
Summary
In Japanese men, mild to severe hyperuricemia is linked to endothelial dysfunction, particularly in those without metabolic syndrome. Severe hyperuricemia exacerbates this dysfunction in individuals with metabolic syndrome.
Area of Science:
- Cardiovascular Health
- Metabolic Disorders
- Endocrinology
Background:
- Investigated the link between hyperuricemia severity and brachial artery flow-mediated dilation (FMD).
- Examined this relationship in Japanese men with and without metabolic syndrome (MetS).
Purpose of the Study:
- To determine if hyperuricemia severity impacts endothelial function (FMD).
- To assess if metabolic syndrome modifies this impact.
Main Methods:
- Cross-sectional study of 2,732 healthy Japanese men (mean age 49).
- Measured FMD and categorized hyperuricemia (mild/severe) based on serum uric acid levels.
- Defined MetS using Japanese criteria.
Main Results:
- Lower FMD observed in subjects with MetS compared to those without.
- In men without MetS, both mild and severe hyperuricemia were associated with lower FMD.
- In men with MetS, only severe hyperuricemia was linked to significantly lower FMD.
Conclusions:
- Mild and severe hyperuricemia are independent risk factors for endothelial dysfunction in men without MetS.
- Severe hyperuricemia exacerbates endothelial dysfunction in men with MetS, while mild hyperuricemia does not.
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