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Abstract
ObjectiveTo explore the risk factors for carotid atherosclerosis in the rural areas of Northwest China, and to assess whether reducing serum homocysteine can prevent carotid atherosclerosis in subjects with hyperhomocysteinemia. MethodThis observational study with 767 participants aged 40 years or older was conducted over 3 years. Color Doppler ultrasonography was performed to measure carotid atherosclerosis. We recorded biochemical indexes and carotid ultrasound results in the first and fourth years. ResultA total of 767 individuals (48.5 % men) were analyzed. Older age, hypertension, and higher levels of baseline low-density lipoprotein cholesterol (LDL-C) were risk factors for increased carotid intima-media thickness (CIMT), carotid plaque, and carotid stenosis (All P < 0.05). No association was found between decreased serum homocysteine (Hcy) levels and CIMT, carotid plaque, or carotid stenosis in individuals with hyperhomocysteinemia. ConclusionOlder age, hypertension, and higher baseline levels of LDL-C were independent risk factors for carotid atherosclerosis. Reducing serum Hcy levels may not prevent carotid atherosclerosis in the general population with hyperhomocysteinemia.
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