Background: Few data are available comparing homocysteine (Hcy) levels in patients with hypertension in different ethnic groups.
Objectives: This study sought to determine whether there are associations of blood pressure and Hcy levels in patients with hypertension from Xinjiang Province, China.
Methods: We examined the serum total Hcy levels in a total of 451 Chinese of various ethnic groups (Han n=234 [51.9%], Uygur n=102 [22.6%], Kazak n=61 [13.5%], Hui n=54 [12.0%]) aged 18-78 years. Two groups of subjects were studied: 1) non-hypertensive, n=101; (2) hypertensive, n=350. We investigated the serum Hcy levels relationship with hypertension.
Results: Hcy levels of Kazak in no hypertension and hypertension patients were highest (11.9 +/- 9.8 vs 19.0 +/- 11.8 umol/L, respectively, unadjusted P=.004, adjusted P=.016). This pattern of higher Hcy values in hypertension patients was consistent across all ethnic groups even after adjustment (all P<0.05). The hypertension risks in the elevated Hcy (>13.9 umol/L) was 3.5 (95% CI, 2.2-5.4) times the normal Hcy (< or = 13.9 umol/L) (P<0.001). Even after adjustment for potential confounders, this difference remained 3.1 times higher (95% CI, 1.9-4.8) (P<.001). Bivariate correlation analysis revealed a statistically significant relationship of Hcy with systolic or diastolic blood pressure across all ethnic groups.
Conclusion: This study confirms the existence of a significant association between hypertension and Hcy in Chinese population groups.
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