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Table 4 Comparison of FA profile in cheek cells, plasma, RBC and PBMC (baseline; n = 38)

From: Cheek cell fatty acids reflect n-3 PUFA in blood fractions during linseed oil supplementation: a controlled human intervention study

FA [% FAME]

Cheek cells

Plasma

RBC

PBMC

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

SFA

    

 C16:0

17.1 ± 1.95a

23.9 ± 1.46b

28.2 ± 1.46c

19.3 ± 1.32d

 C18:0

16.5 ± 3.39a

6.57 ± 0.73b

10.7 ± 1.14c

20.5 ± 1.16d

n-9 MUFA

    

 C18:1n-9 (OA)

26.7 ± 3.29 a

20.9 ± 1.99 b

17.2 ± 1.06c

16.3 ± 0.85c

 Total n-9

27.2 ± 3.30a

21.2 ± 2.00b

17.6 ± 1.09c

17.2 ± 0.86c

n-6 PUFA

    

 C18:2n-6 (LA)

17.1 ± 2.10a

30.8 ± 3.15b

13.6 ± 1.14c

5.76 ± 1.51d

 C18:3n-6

0.10 ± 0.03a

0.29 ± 0.09b

0.05 ± 0.01c

0.05 ± 0.01c

 C20:3n-6

1.16 ± 0.24a

1.50 ± 0.31b

1.56 ± 0.31b

1.40 ± 0.30b

 C20:4n-6 (AA)

3.32 ± 0.76a

6.39 ± 1.05b

13.9 ± 0.93c

24.8 ± 1.42d

 C22:5n- 6

0.06 ± 0.02a

0.12 ± 0.04b

0.38 ± 0.10c

0.24 ± 0.07d

 Total n-6

22.3 ± 2.52a

39.4 ± 3.18b

32.7 ± 1.42c

34.8 ± 1.62d

n-3 PUFA

    

 C18:3n-3 (ALA)

0.29 ± 0.13a

0.40 ± 0.07b

0.14 ± 0.03c

0.06 ± 0.02d

 C20:4n-3 (ETA)

0.05 ± 0.02a

0.07 ± 0.03b

0.06 ± 0.02b

0.04 ± 0.01b

 C20:5n-3 (EPA)

0.22 ± 0.08a

0.51 ± 0.16b

0.75 ± 0.28c

0.31 ± 0.08d

 C22:5n-3 (DPA)

0.22 ± 0.08a

0.39 ± 0.11b

2.09 ± 0.33c

1.56 ± 0.28d

 C22:6n-3 (DHA)

0.79 ± 0.25a

1.44 ± 0.39b

3.91 ± 0.90c

1.66 ± 0.32d

 Total n-3

1.68 ± 0.43a

3.06 ± 0.55b

7.07 ± 1.21c

3.69 ± 0.45d

Sum

    

 Σ SFA

40.4 ± 5.24ac

32.6 ± 1.25b

40.4 ± 0.89a

41.9 ± 1.27c

 Σ MUFA

35.5 ± 4.24a

25.0 ± 2.53b

19.8 ± 1.19c

19.7 ± 0.94c

 Σ PUFA

24.1 ± 2.77a

42.4 ± 3.20b

39.8 ± 1.11c

38.5 ± 1.42d

Ratio

    

n-6/n-3

13.9 ± 3.01a

13.3 ± 2.79a

4.77 ± 0.94b

9.58 ± 1.45c

 AA/EPA

16.6 ± 4.81a

13.7 ± 4.67a

20.5 ± 6.45b

85.4 ± 21.5c

  1. Values are presented as Mean ± SD.
  2. abcdIndicates significant differences between FA of the different matrices (one-way ANOVA; post-hoc Dunnett-T3 test for multiple comparison; P ≤ 0.05).