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Table 2 Analysis of the association between the MTHF methylation profile and A1298C polymorphism of MTHFR and the biochemical, inflammatory and oxidative stress variables

From: The MTHFR promoter hypermethylation pattern associated with the A1298C polymorphism influences lipid parameters and glycemic control in diabetic patients

 

Methylated (42)

Partially methylated (65)

AA (22)

AC (17) + CC (3)

p

AA (36)

AC (23) + CC (6)

p

HbA1c

Mean  ±  SD

Median

8.6 ± 1.7

8.4

7.9 ± 2.3

7.2

0.0718

7.9 ± 1.8

7.6

8.7 ± 1.8

9.0

0.0516

Min.–Max.

5.7–13.0

5.3–14.4

4.1–12.7

4.3–11.2

GLIC

Mean  ±  SD

Median

186.1 ± 52.5

163.5

157.4 ± 51.5

135.0

0.0366*

159.8 ± 60.7

151.0

166.4 ± 70.0

145.0

0.8794

Min.–Max.

121.0–301.0

85.0–282.0

72.0–308.0

85.0 ± 359.0

TC

Mean  ±  SD

Median

222.1 ± 47.6

214.3

164.6 ± 28.3

163.0

0.0001*

195.5 ± 56.5

187.0

195.7 ± 47.1

192.0

0.8225

Min.–Max.

133.0–345.0

93.0–224.0

96.0 ± 320.0

127.0–316.0

HDL

Mean  ±  SD

Median

43.6 ± 9.4

42.0

46.1 ± 9.5

45.0

0.3918

46.1 ± 10.8

45.0

39.8 ± 11.6

39.0

0.0179*

Min.–Max.

27.0–62.0

30.0–61.0

30.0–75.0

21.0–75.0

LDL

Mean  ±  SD

Median

134.8 ± 48.0

131.7

86.1 ± 30.7

84.7

0.0006*

119.0 ± 51.2

114.5

112.6 ± 50.6

110.4

0.7565

Min.–Max.

29.0–227.0

29.4–158.4

46.8 ± 218.8

30.0–251.6

TRIG

Mean  ±  SD

Median

216.0 ± 129.1

196.5

184.0 ± 86.4

165.5

0.4350

177.8 ± 91.4

158.0

211.2 ± 106.8

177.0

0.1937

Min.–Max.

56.0–650.0

55.0–398.0

67.0–488.0

53.0–484.0

CREA-S

Mean  ±  SD

Median

0.8 ± 0.3

0.8

0.8 ± 0.3

0.8

0.7529

0.9 ± 0.4

0.8

0.9 ± 0.3

0.8

0.4362

Min.–Max.

0.4–1.4

0.4–1.7

0.5–2.2

0.5–2.2

M. ALB

Mean  ±  SD

Median

61.7 ± 140.5

18.0

20.4 ± 22.9

9.3

0.4651

79.8 ± 161.6

21.3

48.9 ± 129.9

7.2

0.0705

Min.–Max.

1.0–650.0

1.0–76.0

1.0–650.0

1.0–525.0

RCP

Mean  ±  SD

Median

4.2 ± 3.7

3.8

3.3 ± 2.5

2.5

0.5839

3.6 ± 3.6

1.8

3.1 ± 2.9

2.2

0.7766

Min.–Max.

0.4–13.3

0.4–9.5

0.3 ± 11.7

0.1–11.7

AGP

Mean  ±  SD

Median

95.0 ± 40.8

86.0

84.0–21.8

83.0

0.4652

74.5 ± 29.2

71.0

80.0 ± 25.8

76.0

0.3454

Min.–Max.

59.0–263.0

55.0–140.0

4.0–176.0

21.0–172.0

TAC

Mean  ±  SD

Median

40.8 ± 28.0

42.0

55.0 ± 27.0

61.0

0.1337

24.8 ± 25.6

12.0

26.9 ± 25.0

13.0

0.4800

Min.–Max.

5.0–91.0

8.0–94.0

2.0–96.0

4.0–84.0

MDA

Mean  ±  SD

Median

3.4 ± 1.1

3.7

3.9 ± 0.6

3.7

0.3579

3.5 ± 1.3

3.7

3.3 ± 1.4

3.4

0.4843

Min.–Max.

1.1–4.9

3.1–5.1

1.0–6.2

1.4–6.3

  1. HbA1C (%) glycated haemoglobin, GLIC (mg/dL) fasting glycemia, TC (mg/dL) total cholesterol, HDL (mg/dL) high density lipoprotein, LDL (mg/dL) light density lipoprotein cholesterol, TRIG (mg/dL) triglycerides, CREA-S (mg/dL) serum creatinine, M. ALB (mg/dL) 24 h albumin excreted in the urine, RCP (mg/dL) reactive C protein, AGP (mg/dL) alfa 1 acid glycoprotein, TAC (%) total antioxidant capacity, MDA (µM) malondialdehyde
  2. * Statistically significant (p < 0.05), Mann–Whitney test