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Table 7 Sarcoplasmic reticulum fatty acid profiles (% of total fatty acids) from rats fed experimental diets for 2 or 6 months.

From: Effects of alpha-linolenic acid vs. docosahexaenoic acid supply on the distribution of fatty acids among the rat cardiac subcellular membranes after a short- or long-term dietary exposure

Duration (months)

2

2

2

6

6

6

 

Dietary groups

CTL

DHA

ALA

CTL

DHA

ALA

 

Fatty acids

      

CI

16:0

9.1 ± 0.36c

11.2 ± 0.35a

10.5 ± 0.33b

9.5 ± 0.46b

11 ± 0.22a

10.2 ± 0.05ab

-

18:0

22.9 ± 0.31

22.5 ± 0.36

22.3 ± 0.26

23.2 ± 0.4

22.6 ± 0.22

22.8 ± 0.12

-

18:1 n-9

4.6 ± 0.18a

3.7 ± 0.13b

4.9 ± 0.10a

4.1 ± 0.13a **

3.4 ± 0.14b

4.1 ± 0.1a **

-

18:1 n-7

2.9 ± 0.06a

2.3 ± 0.05c

2.6 ± 0.07b

2.5 ± 0.08a ***

2.1 ± 0.07b ***

2.6 ± 0.05a

$

18:2 n-6

25.8 ± 0.54b

20.9 ± 0.76c

26.9 ± 0.61a

26.1 ± 0.45a

23.4 ± 0.36b *

26.8 ± 0.65a

-

18:3 n-3

<0.01

<0.01

1.3 ± 0.05

<0.01

<0.01

1.2 ± 0.04**

 

20:4 n-6

23.3 ± 0.57a

11.7 ± 0.27b

14.8 ± 0.41b

24.4 ± 0.64a

11.8 ± 0.51b

15.1 ± 0.58b

-

20:5 n-3

<0.01

0.9 ± 0.04

1.1 ± 0.28

<0.01

1.0 ± 0.03b

1.5 ± 0.03a*

 

22:4 n-6

1.3 ± 0.03

<0.01

<0.01

1.1 ± 0.04***

<0.01

<0.01

 

22:5 n-6

3.1 ± 0.23a

0.8 ± 0.02a

<0.01

2.8 ± 0.24b

0.7 ± 0.01a

<0.01

 

22:5 n-3

0.7 ± 0.03b

0.8 ± 0.04b

3.5 ± 0.13a

0.6 ± 0.03b

0.7 ± 0.03b

3.9 ± 0.06a *

$

22:6 n-3

4.2 ± 0.16c

23 ± 0.70a

8.9 ± 0.46b

3.2 ± 0.14c

20.9 ± 0.24a **

9 ± 0.36b

$

SFA

32.8 ± 0.41

34.4 ± 0.32

33.8 ± 0.33

33.2 ± 0.84

34.2 ± 0.12

33.6 ± 0.09

-

MUFA

8.2 ± 0.24a

6.9 ± 0.16b

8.6 ± 0.28a

7.8 ± 0.30a

6.6 ± 0.23b

8 ± 0.08a

-

PUFA

59 ± 0.63

58.7 ± 0.38

57.6 ± 0.52

58.9 ± 1.11

59.1 ± 0.26

58.4 ± 0.09

-

n-6 PUFA

54 ± 0.65a

34 ± 0.79c

42.7 ± 0.66b

54.9 ± 1.01a

36.4 ± 0.43c *

42.6 ± 0.35b

-

n-3 PUFA

5 ± 0.17c

24.8 ± 0.70a

14.8 ± 0.68b

4 ± 0.16c *

22.7 ± 0.24a *

15.7 ± 0.36b

$

LA/AA

1.1 ± 0.05b

1.8 ± 0.08a

1.8 ± 0.07a

1.1 ± 0.02b

2 ± 0.10a

1.8 ± 0.10a

-

AA/DHA

5.6 ± 0.20a

0.5 ± 0.02c

1.7 ± 0.09b

7.7 ± 0.26a ***

0.6 ± 0.03c

1.7 ± 0.10b

$

n-6/n-3 ratio

10.9 ± 0.43a

1.4 ± 0.07c

2.9 ± 0.18b

13.9 ± 0.41a ***

1.6 ± 0.03c

2.7 ± 0.09b

$

P/S ratio

1.8 ± 0.04

1.7 ± 0.03

1.7 ± 0.03

1.7 ± 0.07

1.7 ± 0.01

1.7 ± 0.01

-

  1. SFA. MUFA. and PUFA. saturated. monounsaturated. and polyunsaturated FA; CTL. n-3 PUFA free diet; DHA. docosahexaenoic acid-rich diet; ALA. alpha linolenic acid-rich diet.
  2. Data are means ± SEM. n = 6. Dietary effect (CTL versus DHA versus ALA) was compared in rats from the same dietary treatment duration and values with different letters are statistically different. a>b>c. p < 0.01. Time effect (2 months versus 6 months) was compared between rats from the same dietary group. with * = p < 0.05; ** = p < 0.01. *** = p < 0.001). Symbol $ denoted significant cross-interaction. p < 0.05.