Table 3. White adipose tissue mass and cell size in adipose tissue sites of control and cafeteria diet-fed rats.
| parameter | units | site | male control | male cafeteria | female control | female cafeteria | P-site | P sex | i | P diet |
|---|---|---|---|---|---|---|---|---|---|---|
| WAT site mass | g | SC | 12.3±0.2 | 19.9±1.0 | 7.02±0.25 | 12.3±0.6 | <0.0001 S>P>M≈R | <0.0001 | <0.0001 | |
| ME | 4.94±0.64 | 8.38±0.95 | 3.92±0.33 | 9.02±1.25 | NS | <0.0001 | ||||
| PG | 7.34±0.50 | 12.8±1.6 | 4.83±0.39 | 11.8±1.70 | NS | <0.0001 | ||||
| RP | 6.29±0.80 | 9.98±1.38 | 2.79±0.35 | 7.81±0.77 | 0.0051 | 0.0001 | ||||
| mean cell size | nL | SC | 7.72±0.88 | 8.34±0.49 | 7.15±0.39 | 9.89±0.25 | <0.0001 R>P≈S>M | NS | 0.0088 | |
| ME | 6.76±0.21 | 7.12±1.28 | 4.19±0.84 | 9.33±0.61 | NS | i | 0.0065 | |||
| PG | 7.72±0.66 | 9.16±0.84 | 8.35±0.58 | 11.1±0.6 | NS | 0.0061 | ||||
| RP | 9.74±0.25 | 9.48±0.56 | 9.43±0.78 | 12.1±0.4 | NS | i | 0.0439 | |||
| number of cells in the whole site | 106·cells | SC | 1474±121 | 2556±69 | 1000±73 | 1473±213 | <0.0001 S>P≈M>R | <0.0001 | i | <0.0001 |
| ME | 658±69 | 1392±265 | 906±129 | 959±116 | NS | 0.0411 | ||||
| PG | 883±25 | 1382±85 | 579±31 | 1069±145 | 0.0019 | <0.0001 | ||||
| RP | 681±65 | 1072±165 | 298±37 | 639±46 | 0.0003 | 0.0009 | ||||
| number of cells /g tissue | 106·cells/g | SC | 122±9 | 122±8 | 142±7 | 101±3 | 0.0005 M>S≈P≈R | NS | i | 0.0122 |
| ME | 149±5 | 134±21 | 230±35 | 109±7 | NS | i | 0.0051 | |||
| PG | 134±10 | 104±7 | 123±8 | 87±4 | NS | 0.0007 | ||||
| RP | 103±3 | 102±5 | 110±9 | 83.0±2.6 | NS | i | 0.0262 | |||
| protein content/g tissue | mg/g | SC | 63.1±11.6 | 35.0±3.9 | 51.2±3.8 | 41.2±4.4 | <0.0001 M>R>S≈P | NS | 0.0105 | |
| ME | 74.2±7.4 | 60.9±4.7 | 86.2±4.2 | 57.5±2.9 | NS | 0.0010 | ||||
| PG | 44.3±1.6 | 35.0±2.0 | 54.4±2.4 | 47.6±2.6 | <0.0001 | 0.0015 | ||||
| RP | 65.1±6.3 | 63.7±5.2 | 62.9±4.7 | 50.7±1.3 | NS | NS |
The data are the mean ± sem of 6 different animals. Up to three significant digits are shown for each mean value. SC/S = subcutaneous inguinal: ME/M = mesenteric; PG/P = perigonadal (periovaric, epididymal), RP/R = retroperitoneal. Statistical significance of the differences between groups (2-way anova): the columns show the P values for sex, diet and their interaction. A i in the interaction column indicates a significant interaction between the two factors analysed. The statistical significance of differences between sites was estimated by a 3-way-ANOVA. P values >0.05 are presented as NS; the sequences indicate overall significant differences between sites; post-hoc Duncan test: the sign > indicates significantly higher values at the left; commas are equivalent to NS.