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A Correlative Study of Vitamin D Receptor Variants Fok1, Apa1, Bsm1, and Taq1 Polymorphism and Vitamin D Deficiency with Higher Risk Ratio of Coronary Artery Disease in Female Population

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Primers used in the study and RFLP fragment sizes for VDR SNP genotyping.

VDR gene Restriction site Primers RFLP fragments (bp) Restriction enzyme
31236 F:CAGAGCATGGACAGGGAGCAAGR:GCAACTCCTCATGGCTGAGGTCTCA 494, 293, 251, 201 Taq I
1544410 F:CAACCAAGACTACAAGTACCGCGTCAGTGAR:AACCAGCGGGAAGAGGTCAAGGG 800, 650, 150 Bsm I
7975232 F:CAGAGCATGGACAGGGAGCAAR:TCATGGCTGAGGTCTCAAGGG 740, 520, 220 Apa I
10735810 F:AGCTGGCCCTGGCACTGACTCTGCTCTR:ATGGAAACACCTTGCTTCTTCTCCCTC 96, 169, 265 Fok I

Taq I VDR gene polymorphism in cases and control subjects.

Model Genotype Control N=100 Cases N=100 OR (95% CI) p-value
  T/T 27 (54%) 46 (46%) 1.00  
Co-dominant T/t 18 (36%) 38 (38%) 1.24 (0.59–2.58) 0.64
  t/t 5 (10%) 14 (14) 1.64 (0.53–5.07)  
Dominant T/T 27 (54%) 46 (46%) 1.00  
T/t-t/t 23 (46%) 53 (53%) 1.33 (0.67–2.63) 0.42
Recessive T/T-T/t 45 (90%) 85 (85%) 1.00  
t/t 5 (10%) 14 (14%) 1.50 (0.51–4.43) 0.45
Over-dominant T/T-t/t 32 (64%) 61 (61%) 1.00  
T/t 18 (36%) 38 (38%) 1.13 (0.56–2.28) 0.74
Allele T 72 (72%) 132 (66%)    
t 28 (28%) 68 (34%) 1.30 (0.77–2.21) 0.35

Apa-I VDR gene polymorphism in cases and control subjects.

Model Genotype Control N=100 Cases N=100 OR (95% CI) p-value
  A/A 58 (58%) 46 (46%) 1.00  
Co-dominant A/a 26 (26%) 31 (31%) 1.50 (0.68–3.34)  
  a/a 16 (16%) 21 (21%) 1.65 (0.65–4.23) 0.44
Dominant A/A 58 (58%) 46 (46%) 1.00  
A/a-a/a 42 (42%) 53 (53%) 1.56 (0.78–3.10) 0.2
Recessive A/A-A/a 84 (84%) 78 (78%) 1.00  
a/a 16 (16%) 21 (21%) 1.43 (0.58–3.51) 0.43
Over-dominant A/A-a/a 74 (74%) 68 (68%) 1.00  
A/a 26 (26%) 31 (31%) 1.32 (0.61–2.82) 0.48
Allele A 142 (71%) 126 (63%)    
a 58 (29%) 74 (37%) 1.45 (0.86–2.44) 0.19

Demographics, clinical, and biochemical variables in cases and control subjects.

Demographics Controls (Mean±SD) Cases (Mean±SD) p-value
Age 49.5±16.5 51.65±17.5 >0.05
SBP 115.5±7.5 116.5±8.5 0.0001
DBP 77.8±9.5 89.5±10.9 0.0001
25-hydroxy vitamin D (ng/ml) 51.52±11.5 20.2±8.5 0.0001
Fasting blood sugar (mg/dl) 113.2±10.5 119.8±11.5 >0.05
Total cholesterol (mg/dl) 185.5±20.8 255.5±50.5 0.0001
Triglycerides (mg/dl) 99.7±19.5 240.31±52.5 0.0001
HDL-C (mg/dl) 49.6±8.5 42.18±10.5 0.0001
LDL-C (mg/dl) 58.5±12.5 131.5±45.8 0.0001
VLDL-C (mg/dl) 21.3±10.6 49.9±11.2 0.0001
hsCRP (mg/L) 0.61±1.5 6.22±2.5 >0.05
Serum creatinine (mg/dl) 0.85±0.075 0.92±0.08 >0.05

Fok I VDR gene polymorphism in cases and control subjects.

Model Genotype Control N=100 Cases N=100 OR (95% CI) p-value
  F/F 70 (70%) 68 (68%) 1.00  
Co-dominant F/f 14 (14%) 29 (29%) 2.16 (0.86–5.44)  
  f/f 16 (16%) 2 (2%) 0.13 (0.03–0.65) 0.0018
Dominant F/F 70 (70%) 68 (68%) 1.00  
  F/f-f/f 15 (30%) 31 (31%) 1.08 (0.52–2.26) 0.84
Recessive F/F-F/f 84 (84%) 97 (97%) 1.00  
f/f 16 (16%) 2 (2%) 0.11 (0.02–0.54) 0.0018
Over-dominant F/F-f/f 86 (86%) 70 (70%) 1.00  
F/f 14 (14%) 29 (29%) 2.58 (1.04–6.41) 0.031
Allele F 144 (77%) 166 (83%) 0.67 (0.37–1.23)  
f 46 (23%) 34 (17%) 0.21

Bsm I VDR gene polymorphism in cases and control subjects.

Model Genotype Control N=100 Cases N=102 OR (95% CI) p-value
  B/B 62 (62%) 61 (61%) 1.00  
Co-dominant B/b 12 (12%) 26 (26%) 2.24 (0.83–6.01)  
  b/b 26 (26%) 12 (12%) 0.48 (0.19–1.17) 0.029
Dominant B/B 62 (62%) 61 (61%) 1.00  
B/b-b/b 38 (38%) 38 (38%) 1.03 (0.51–2.08) 0.93
Recessive B/B-B/b 37 (74%) 86 (86%) 1.00  
b/b 26 (26%) 12 (12%) 0.40 (0.17–0.95) 0.039
Over-dominant B/B-b/b 88 (88%) 73 (73%) 1.00  
B/b 12 (12%) 26 (26%) 2.65 (1.01–6.94) 0.035
Allele B 136 (68%) 148 (74%)    
b 64 (32%) 52 (26%) 0.72 (0.42–1.23) 0.27