Skip to main content

Table 5 The mRNA levels of genes involved in different metabolic pathways in liver

From: Exploring the effects of dietary inulin in rainbow trout fed a high-starch, 100% plant-based diet

Liver gene expression

LS-0

LS-In

HS-0

HS-In

P values

CHO/protein

Inulin

Interaction

Glucose transport

glut2a

0.75 ± 0.46

1.11 ± 0.50

1.16 ± 1.13

0.70 ± 0.63

NS

NS

NS

glut2b

0.79 ± 0.71b

2.12 ± 1.67a

1.13 ± 0.65ab

0.82 ± 0.86b

NS

NS

**

Glycolysis

gcka

0.24 ± 0.35

2.59 ± 4.09

17.89 ± 8.13

12.07 ± 10.43

***

NS

NS

gckb

0.27 ± 0.58c

1.53 ± 1.34bc

15.03 ± 7.15a

5.58 ± 3.86b

***

**

***

pfkla

1.03 ± 1.05b

2.71 ± 2.30a

1.13 ± 0.62b

0.73 ± 0.72b

*

NS

*

pfklb

0.97 ± 0.81b

2.43 ± 2.15a

1.33 ± 0.75ab

0.84 ± 0.85b

NS

NS

*

pk

0.93 ± 0.81b

2.23 ± 1.56a

1.05 ± 0.74b

0.67 ± 0.55b

*

NS

**

Gluconeogenesis

pck1

1.85 ± 1.62

2.26 ± 2.42

0.98 ± 1.26

0.94 ± 1.38

*

NS

NS

pck2

1.26 ± 1.31

2.09 ± 2.22

1.44 ± 0.80

0.96 ± 1.32

NS

NS

NS

fbp1a

0.59 ± 0.52

1.72 ± 1.44

0.76 ± 0.81

1.13 ± 1.48

NS

*

NS

fbp1b1

1.11 ± 1.21ab

2.32 ± 1.68a

0.76 ± 0.45b

0.59 ± 0.68b

**

NS

*

fbp1b2

1.35 ± 1.71

1.97 ± 1.47

1.01 ± 0.76

0.46 ± 0.38

*

NS

NS

g6pca

1.07 ± 1.18

2.45 ± 2.01

1.20 ± 0.83

1.01 ± 1.10

NS

NS

NS

g6pcb1b

1.09 ± 0.70

1.31 ± 1.28

1.28 ± 1.00

1.32 ± 1.25

NS

NS

NS

g6pcb2a

0.59 ± 0.65b

2.75 ± 2.58a

2.55 ± 2.08ab

0.88 ± 1.23ab

NS

NS

**

Lipogenesis

srebf1

0.61 ± 0.77b

2.77 ± 2.10a

1.90 ± 1.34ab

0.89 ± 1.27b

NS

NS

***

g6pdb

0.67 ± 0.66

2.11 ± 1.75

1.07 ± 0.75

1.02 ± 1.49

NS

NS

NS

aclyb

0.76 ± 0.66b

1.60 ± 1.03ab

2.16 ± 1.37a

0.80 ± 1.01b

NS

NS

**

aclyc

0.85 ± 0.81b

2.76 ± 2.33a

2.18 ± 1.29ab

0.75 ± 0.52ab

NS

NS

***

aca-aa

1.20 ± 1.72

2.67 ± 2.74

3.28 ± 2.89

2.65 ± 3.29

NS

NS

NS

aca-ba

1.59 ± 1.37

2.84 ± 2.27

0.84 ± 0.53

0.80 ± 0.75

**

NS

NS

fasna

0.81 ± 0.48

1.06 ± 0.56

1.43 ± 1.17

1.37 ± 1.70

NS

NS

NS

fasnb

1.24 ± 1.00

1.40 ± 0.503

1.25 ± 0.81

1.22 ± 1.06

NS

NS

NS

Cholesterol biosynthesis

srepb2a

1.05 ± 1.15

1.79 ± 1.20

1.19 ± 0.59

1.06 ± 1.15

NS

NS

NS

srepb2b

1.04 ± 0.90

1.70 ± 1.18

0.88 ± 0.35

0.70 ± 0.63

*

NS

NS

hmgcra

0.94 ± 0.74

1.19 ± 0.80

1.11 ± 0.85

1.01 ± 1.12

NS

NS

NS

hmgcrb

1.58 ± 1.21

1.26 ± 0.84

0.92 ± 0.59

0.70 ± 0.63

*

NS

NS

dhcr7a

1.34 ± 0.99

1.43 ± 1.09

0.77 ± 0.59

0.76 ± 0.78

*

NS

NS

dhcr7b

0.99 ± 0.41

1.16 ± 0.85

0.49 ± 0.22

0.85 ± 0.78

NS

NS

NS

  1. The four feeding groups (LS-0: Low-starch with 0 inulin; LS-In: Low-starch with 2% inulin; HS-0: high-starch with 0 inulin; and HS-In: high-starch with 2% inulin) were given to 63 fish per group (3 tanks per group) for 12 weeks. Data are presented as mean ± SD (n = 12 fish). Statistical differences were analyzed with a two-way ANOVA test and were considered statistically significant for P < 0.05
  2. In case of interaction, a post-hoc Tukey’s test was performed (P < 0.05). a,bDifferent superscripts indicated significant differences between groups. glut2a and glut2b: glucose transporter paralogs. gcka and gckb: glucokinase paralogs. pfkla and pfklb: 6-phosphofructokinase paralogues. Pk: pyruvate kinase. pck1 and pck2: phosphoenolpyruvate carboxykinase paralogs. fbp1a, fbp1b1, and fbp1b2: fructose 1.6-bisphosphatase paralogues. g6pca, g6pcb1b, and g6pcb2a: glucose-6-phosphatase paralogs. srebf1: sterol regulatory element binding factor 1. g6pdb: glucose-6-phosphatase dehydrogenase. aclyb, and aclyc: adenosine triphosphate citrate lyase paralogues. aca-aa and aca-ba: acetylcoA carboxylase paralogues. fasna and fasnb: fatty acid synthase paralogs. srebp-2a and srebp-2b: sterol regulatory element-binding protein 2 paralogues. hmgcra, and hmgcrb: hydroxymethylglutaryl-CoA synthase paralogues. dhcr7a, and dhcr7b: 7-dehydrocholesterol reductase paralogues
  3. NS Not significant, *P < 0.05, **P < 0.01, ***P < 0.001