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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).