Table 3.
Leptin |
|||||
---|---|---|---|---|---|
Saline | 0.005 μg | 0.01 μg | 0.05 μg | 0.1 μg | |
Fat depots | |||||
Inguinal, g | 4.79 ± 0.35a | 5.00 ± 0.20a | 5.49 ± 0.24a | 2.06 ± 0.62b | 1.04 ± 0.04b |
Epididymal, g | 3.03 ± 0.19a | 3.28 ± 0.22a | 3.16 ± 0.18a | 1.35 ± 0.43b | 0.28 ± 0.08b |
Retroperitoneal, g | 1.32 ± 0.18a | 1.58 ± 0.12a | 1.53 ± 0.14a | 0.42 ± 0.16b | 0.25 ± 0.03b |
Mesenteric, g | 1.26 ± 0.20a | 1.59 ± 0.12a | 1.53 ± 0.14a | 0.42 ± 0.16b | 0.25 ± 0.28b |
Carcass composition | |||||
Weight, g | 308 ± 7a | 315 ± 5a | 312 ± 5a | 263 ± 14b | 228 ± 6b |
Fat, g | 19.1 ± 1.9a | 21.4 ± 0.9a | 22.0 ± 1.2a | 7.7 ± 2.6b | 2.5 ± 0.1b |
Lean, g | 275 ± 6a | 279 ± 5a | 277 ± 5a | 246 ± 11b | 217 ± 6b |
Ash, g | 13.1 ± 0.8 | 14.8 ± 1.2 | 13.1 ± 0.6 | 10.0 ± 0.7 | 8.4 ± 0.9 |
Serum assays | |||||
Leptin, ng/ml | 2.2 ± 0.4a | 2.2 ± 0.4a | 1.9 ± 0.2a | 0.7 ± 0.2b | 0.3 ± 0.1b |
Glucose, mg/dl | 200 ± 7 | 215 ± 15 | 198 ± 23 | 158 ± 14 | 193 ± 8 |
Insulin, ng/ml | 0.82 ± 0.28 | 1.69 ± 0.48 | 1.94 ± 0.26 | 0.90 ± 0.30 | 1.41 ± 0.51 |
Values are means ± SE for groups of 7–9 rats euthanized after 16 days of third-ventricle infusions of different doses of leptin in experiment 3. Values for a specific measure that do not share a common superscripted letter are significantly different at P < 0.05.