Table 3.
Relative mRNA concentrations of PPARα and PPARδ target genes involved in β-oxidation (ACOX1, SCAD, MCAD, LCAD) and genes involved in carnitine uptake (OCTN2) and biosynthesis (BBD, TMABA-DH) in liver and gastrocnemius muscle of lean rats (Lean), obese Zucker rats fed a control diet (Obese Control) or obese Zucker rats fed a diet supplemented with 780 mg niacin/kg diet (Obese Niacin) for 4 wk 1
| |
Lean |
Obese control |
Obese niacin |
|---|---|---|---|
| Relative mRNA concentration (fold of obese control = 1.00) | |||
|
Skeletal muscle |
|
|
|
| ACOX1 |
1.49 ± 0.29ab |
1.00 ± 0.21b |
1.89 ± 0.36a |
| SCAD |
1.68 ± 0.46ab |
1.00 ± 0.40b |
2.69 ± 0.70a |
| MCAD |
1.40 ± 0.30ab |
1.00 ± 0.34b |
2.24 ± 0.47a |
| LCAD |
1.43 ± 0.46ab |
1.00 ± 0.25b |
3.78 ± 1.32a |
| SLC22A5 |
1.25 ± 0.31ab |
1.00 ± 0.18b |
1.93 ± 0.42a |
|
Liver |
|
|
|
| ACOX1 |
0.92 ± 0.14b |
1.00 ± 0.12b |
1.42 ± 0.07a |
| SCAD |
0.91 ± 0.09b |
1.00 ± 0.14b |
1.57 ± 0.08a |
| MCAD |
1.19 ± 0.13b |
1.00 ± 0.14b |
1.76 ± 0.22a |
| LCAD |
0.99 ± 0.17b |
1.00 ± 0.14b |
1.57 ± 0.08a |
| SLC22A5 |
0.78 ± 0.06b |
1.00 ± 0.07b |
1.42 ± 0.12a |
| BBOX1 |
0.76 ± 0.08b |
1.00 ± 0.08b |
1.54 ± 0.06a |
| ALDH9 | 1.00 ± 0.08b | 1.00 ± 0.08b | 1.40 ± 0.14a |
1Data are expressed as means ± SEM. n = 10 rats/group. a,bValues with different superscript letters differ, P < 0.05.