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BMC Cardiovasc Disord. 2019 Jun 17;19(1):145. doi: 10.1186/s12872-019-1125-0.

Vitamin D deficiency is associated with risk of developing peripheral arterial disease in type 2 diabetic patients.

Author information

1
Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, 1 Dong Jiao Min Xiang, Beijing, 100730, China.
2
Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
3
Department of Mathematics, School of Biomedical Engineering, Capital Medical University, Beijing, 100069, China.
4
Department of Endocrinology, Beijing Tongren Hospital, Capital Medical University, 1 Dong Jiao Min Xiang, Beijing, 100730, China. jkyang@ccmu.edu.cn.

Abstract

BACKGROUND:

The relationship between vitamin D levels and peripheral arterial disease (PAD) remains unclear. We assessed the association of serum 25-hydroxyvitamin D (25(OH)D) levels with the prevalence of PAD in patients with type 2 diabetes mellitus(T2DM).

METHODS:

A total of 1018 T2DM patients participated in this cross-sectional study. Serum 25(OH)D levels were measured and risk factors of PAD were recorded. PAD was diagnosed as an ankle-brachial index (ABI) < 0.9.

RESULTS:

The mean age of the diabetic patients was 58.59 ± 11.34 years. Of all the patients, only 20.1% had a 25(OH)D level ≥ 20 ng/mL. Compared to patients without PAD, serum 25(OH)D levels were significantly lower in those with PAD (14.81 ± 8.43 vs. 11.55 ± 5.65 ng/mL, P < 0.001). The overall prevalence of PAD was 7.7%. From the highest level (≥ 20 ng/mL) to the lowest level (< 10 ng/mL) of serum 25(OH)D, the prevalence of PAD was 2.8, 7.5 and 10.7% respectively. After adjustment for age, sex, body mass index (BMI), smoking status and season, compared to patients with serum 25(OH)D levels ≥20 ng/mL, the odds ratios of PAD in patients with a level of 10 to < 20 ng/mL and < 10 ng/mL was 3.587(95% CI: 1.314-9.790) and 5.540(95% CI: 2.004-15.320), respectively. When further considering the influence of coronary heart disease (CHD), hypertension and cerebral infarction, the ratios changed to 3.824(95% CI: 1.378-10.615) and 5.729(95% CI: 2.028-16.187), respectively. And after further adjustment for the duration of diabetes, glycated hemoglobin (HbA1c) and glomerular filtration rate (GFR), the ratios changed to 3.489(95% CI: 1.100-11.062) and 3.872(95% CI: 1.168-12.841), respectively.

CONCLUSIONS:

Reduced serum vitamin D levels were associated with an increased risk of PAD in T2DM patients. Randomized interventive clinical studies are required to verify the effects of vitamin D supplementation on PAD.

KEYWORDS:

25-hydroxyvitamin D; Peripheral arterial disease; Type 2 diabetes; Vitamin D deficiency

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