Relationship of serum vitamin D deficiency with coronary artery disease severity using multislice CT coronary angiography

Background. Vitamin D, a fat-soluble vitamin, has various extraskeletal effects, and several human and animal studies have suggested that vitamin D deficiency may be a contributory factor in the pathogenesis of coronary artery disease (CAD). However, such studies in the Indian subcontinent are either lacking or have shown conflicting results. Methods. This was a descriptive cross-sectional study involving 121 patients with CAD from a tertiary care center and their 80 age-matched healthy controls. Serum vitamin D levels along with serum and urine chemistries were measured in both the groups. The average duration of sun exposure/day and use of sunscreen were also considered in the study cohort using a questionnaire. Serum vitamin D levels were categorized into deficient (<30 nmol/lit), insufficient (30–75 nmol/lit), and sufficient (>75 nmol/lit) groups. Results. Among the cases, 51.2% of the patients were vitamin D deficient and 44.6% patients had insufficient vitamin D levels, whereas among controls, 40% and 31% of the population had deficient and insufficient levels of vitamin D, respectively. However, the mean value of the serum vitamin D level was not statistically different in the cases as compared to that of the controls (34.06 vs 40.19 nmol/lit) (P=0.08). Corrected serum calcium (9.26 vs 9.59 mg%) (P≤0.0001) and serum albumin levels (4.21 vs 4.75 gm%) (P≤0.0001) were lower in the cases than those of the controls. The average sun exposure/day was higher among the cases than that among the controls (2.93 vs 1.85 hours) (P=0.001). Conclusion. Vitamin D deficiency is widely prevalent in Indian population despite abundant sunshine, and the duration of sun exposure is not correlated with serum vitamin D levels. Vitamin D deficiency is not associated with CAD. However, serum calcium is deficient in CAD patients as compared to the controls. Large-scale studies are required to explore the association further to evaluate the benefits of screening and correction of vitamin D deficiency in patients with CAD.

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PRESENCE OF LOW VITAMIN D AND HIGH SERUM LIPOPROTEIN 'A' LEVELS IN CAD: DO THEY IMPART RISK IN SYNERGISM?

10.36106/ijsr/0303309 ◽

2021 ◽

pp. 1-3

Author(s):

Prabhash Bhavsar ◽

Charanjeet Kaur ◽

BC Kabi

Keyword(s):

Coronary Artery Disease ◽

Vitamin D ◽

Risk Factor ◽

Coronary Artery ◽

Serum Vitamin ◽

Inflammatory Disorder ◽

Lipoprotein A ◽

Serum Vitamin D ◽

Triple Vessel Disease ◽

Artery Disease

Aims: Coronary artery disease (CAD) is an inflammatory disorder. Recently low vitamin D and high lipoprotein ‘a’ (Lp‘a’) have been linked in causation of coronary artery disease. This study was conducted to see the the combined effect of these two modifiable risk factors i.e. low vitamin D and high Lp‘a’ in etiology of CAD. Methods: It was a cross sectional study. Triple vessel disease patients (n=31) admitted for bypass surgery were taken as cases and age and gender matched healthy persons were taken as controls (n=30). Serum vitamin D estimation was done by competitive ELISA method. Serum Lp‘a’ estimation was done by immunoturbidimetric assay. Results: when subjects were compared for dual risk factor (Vitamin D deficiency and Hyperlipoproteinemia‘a’), it was observed that the odds of having disease were very high (OR=30.00; p=0.0004) than the single risk factor (OR for Hypovitaminosis D = 3.33; p=0.03 and OR for Hyperlipoproteinemia ‘a’ = 5.00; p=0.004). The Pearson’s correlation coefficient for the relationship between serum Vitamin D and Lipoprotein ‘a’ shows no correlation (r = ̶ 0.1019). Conclusion: Risk of having CAD increases many folds when subject has vitamin D deficiecy as well as high Lp‘a’.

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Investigating the Relationship the Severity of Coronary Artery Disease with Serum Levels of Vitamin D in Men after Eliminating the Effect of Diet

Current Nutrition & Food Science ◽

10.2174/1573401314666181105143051 ◽

2020 ◽

Vol 16 (4) ◽

pp. 508-513

Author(s):

Farshad K. Birgani ◽

Majid M. Shahi ◽

Bahman Cheraghian ◽

Habib Haybar

Keyword(s):

Coronary Artery Disease ◽

Vitamin D ◽

Coronary Artery ◽

Serum Vitamin ◽

Serum Levels ◽

Serum Vitamin D ◽

Vitamin D Levels ◽

Significant Difference ◽

Artery Disease ◽

The Relationship

Background: Coronary artery disease (CAD) is one of the most common cardiovascular diseases that can lead to mortality, inability, and lower productivity levels. Objective: The aim of this study was to determine the relationship between serum vitamin D level and cardiovascular risk factors and the severity of CAD after determining and eliminating the confounding effects of dietary patterns in male patients undergoing angiography. Methods: This descriptive-analytic study was carried out on 132 men undergoing angiography during 2017 and 2018. To this end, food frequency questionnaire (FFQ) and physical activity questionnaire (PAQ) were completed for the patients. Fasting blood sugar (FBS), triglyceride, total cholesterol, HDL-C, LDL-C and vitamin D levels were also investigated. Results: Serum vitamin D levels significantly decreased with an increase in CAD severity (p=0.001). Also, low serum levels led to the highest severity of CAD (p=0.005). However, there was no significant difference between patients with vitamin D deficiency with different degrees of CAD (p=0.084). Also, the highest percentage of individuals with normal serum levels of vitamin D was observed in the group without any blocked blood arteries (normal) (p=0.023). Conclusion: This study shows an inverse relationship between serum 25(OH) D level and the severity of CAD. Our data show that vitamin D plays an important role in preventing CAD. These findings could help design prospective studies and clinical trials on a wider scale to investigate the effects of vitamin D interventions in preventing the development of CAD.

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