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Table 2 LC-MS-MS analysis of sphingolipid composition in HDL-containing fractions from CCHS serum samples.

From: S1P, dihydro-S1P and C24:1-ceramide levels in the HDL-containing fraction of serum inversely correlate with occurrence of ischemic heart disease

Sphingolipid1

Concentration (nM)

 

High HDL-C, IHD2

High HDL-C, No IHD2

 

Low HDL-C, IHD2

Low HDL-C, No IHD2

 
 

Mean

Std

Mean

Std

P value 3

Mean

Std

Mean

Std

P value 3

S1P

1362.7

349.6

1643.4

256.2

<0.0001

1220.0

279.6

1569.1

357.0

<0.0001

Sph

10.4

8.5

BDL

NA

BDL

BDL

NA

DHSph

BDL

BDL

NA

BDL

9.9

22.9

NA

DH-S1P

95.4

49.1

150.5

42.1

<0.0001

82.1

38.1

122.3

45.5

<0.0001

C16-Cer

45.2

60.2

25.6

10.1

<0.0001

BDL

19.7

28.9

NA

DHC16-Cer

9.4

11.5

6.9

3.5

0.5122

BDL

BDL

NA

C14-Cer

BDL

BDL

NA

BDL

BDL

NA

C18:1-Cer

15.7

5.2

BDL

NA

BDL

BDL

NA

C18-Cer

42.2

14.4

41.8

15.9

0.9872

36.9

8.1

34.2

6.6

0.4587

C20:1-Cer

26.9

11.8

BDL

NA

BDL

BDL

NA

C20-Cer

103.6

52.3

94.9

37.4

0.8361

43.1

19.7

43.8

17.7

0.9542

C22-Cer

168.5

94.3

208.1

95.8

0.0999

65.4

39.6

79.9

47.7

0.2406

C20:4-Cer

10.1

4.0

BDL

NA

BDL

BDL

NA

C22:1-Cer

61.0

32.3

60.7

33.9

0.9851

19.2

8.0

24.9

9.1

0.0223

C24-Cer

1253.8

843.0

2008.3

858.6

<0.0001

708.2

309.9

785.8

392.2

0.8214

C24:1-Cer

699.1

437.5

912.4

348.8

0.0002

320.6

152.5

435.4

163.1

0.0027

C26-Cer

47.1

186.4

38.5

81.0

<0.0001

7.6

3.9

BDL

NA

C26:1-Cer

36.5

106.3

27.1

16.2

0.0008

8.4

4.6

8.4

5.4

0.9629

  1. 1Abbrevations used: Sph, sphingosine; DH, dihydro; Cer, ceramide; P, phosphate; BDL, below detection limit, NA, not applicable since at least one group in the pair was below detection limit.
  2. 2Sample sizes are High HDL-C, IHD, n = 53; High HDL-C, no IHD, n = 55; Low HDL-C, IHD, n = 42; Low HDL-C, no IHD, n = 54.
  3. 3p-values are derived from a Tukey's comparison following a one-way ANOVA test conducted at level of significance 0.05.