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Abstract
Numerous studies have shown that uric acid (UA) is associated with cerebrovascular disease, but whether UA is a protective factor or worsens the risk of developing cerebrovascular disease remains controversial. This study investigated the relationship between UA levels detected at admission and the severity of acute primary cerebral infarction. This cross-sectional study enrolled patients with acute primary cerebral infarction (N = 238, 157 men). We designated the levels of serum UA measured at the time of admission as the independent variable and the degree of neurological impairment at admission as the dependent variable. The National Institutes of Health Stroke Scale (NIHSS) was used to assess the extent of neurological dysfunction: NIHSS ≤ 5, minor stroke; NIHSS > 5, moderate to severe stroke. There was a statistically significant difference in UA levels between patients with mild cerebral infarctions (NIHSS ≤ 5) and those with moderate or severe cerebral infarctions (NIHSS > 5) (P < 0.0001). After adjusting for confounding factors, the serum UA level was found to be nonlinearly related to NIHSS, and the inflection point was 372 μmol/L. The extent of the influence and confidence interval was 0.99 (0.98, 0.99) on the left side of the inflection point and 1.00 (1.00, 1.01) on the right side. There was a nonlinear relationship between the UA level measured on admission and the degree of neurological impairment in patients with acute primary cerebral infarction. When UA was <372 μmol/L, it was negatively correlated with the degree of neurological impairment in patients with acute cerebral infarction, but when UA was ≥372 μmol/L, the protective effect of UA disappeared.
Highlights
With its highest incidences in Asia—especially in China—and Eastern Europe, cerebral infarction remains a global concern
While some research has shown that uric acid (UA) is involved in the formation of cerebral atherosclerosis, is a risk factor for cerebral infarction, and can cause cardiovascular and cerebrovascular accidents [7, 8], a study has shown that serum UA has no relationship to cerebral infarction [9]
To help resolve this controversy, the present study investigated whether UA levels at admission were independently associated with the severity of acute primary cerebral infarction
Summary
With its highest incidences in Asia—especially in China—and Eastern Europe, cerebral infarction remains a global concern. While some research has shown that UA is involved in the formation of cerebral atherosclerosis, is a risk factor for cerebral infarction, and can cause cardiovascular and cerebrovascular accidents [7, 8], a study has shown that serum UA has no relationship to cerebral infarction [9]. To help resolve this controversy, the present study investigated whether UA levels at admission were independently associated with the severity of acute primary cerebral infarction
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