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Table 3 LC-MS-MS analysis of sphingolipid composition in total serum 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

1889.9

546.0

1849.8

407.6

O-NS

1879.2

549.0

2053.0

628.0

O-NS

Sph

BDL

22.3

11.0

NA

16.0

11.6

52.3

59.9

<0.0001

DHSph

BDL

14.8

9.2

NA

10.1

5.1

16.6

11.6

<0.0001

DH-S1P

213.0

76.1

276.8

96.5

0.0032

273.9

98.2

271.3

106.0

0.9992

C16-Cer

171.4

70.7

212.0

86.8

0.0276

360.1

163.9

222.5

78.7

<0.0001

DHC16-Cer

139.1

74.9

60.1

38.5

<0.0001

77.1

39.7

75.5

31.6

0.9958

C14-Cer

54.6

8.9

92.3

19.7

<0.0001

117.0

34.4

103.0

35.1

0.0412

C-18:1-Cer

91.6

33.3

49.5

13.5

<0.0001

63.7

25.6

65.2

13.6

0.5492

C18-Cer

163.8

51.0

123.9

42.3

0.0002

171.2

69.9

123.2

31.9

<0.0001

C20:1-Cer

57.5

38.5

17.4

6.1

<0.0001

28.4

15.4

25.0

9.7

0.9997

C20-Cer

481.1

205.9

249.9

94.2

<0.0001

320.9

153.3

270.8

120.0

0.3547

C22-Cer

1045.2

347.4

758.2

194.0

<0.0001

1116.0

420.3

915.4

317.9

0.0147

C20:4-Cer

BDL

BDL

NA

BDL

6.7

10.1

NA

C22:1-Cer

128.7

118.9

62.3

37.3

0.0061

206.5

160.1

61.4

47.9

<0.0001

C24-Cer

6026.3

1816.2

5522.0

1381.9

O-NS

5577.5

2080.1

5724.1

1715.1

O-NS

C24:1-Cer

3433.4

847.9

2424.3

545.8

<0.0001

2838.6

951.2

3223.2

688.7

0.0681

C26-Cer

40.7

32.8

33.8

15.7

O-NS

38.9

30.2

36.0

18.8

O-NS

C26:1-Cer

30.7

20.0

30.8

11.9

0.8093

40.3

21.2

29.8

15.9

0.0140

  1. 1Abbrevations used: Sph, sphingosine; DH, dihydro; Cer, ceramide; P, phosphate; BDL, below detection limit; O-NS, Overall not significant by ANOVA; 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.