. Author manuscript; available in PMC: 2008 Dec 6.

Published in final edited form as: Endocrinology. 2006 Oct 12;148(1):433–440. doi: 10.1210/en.2006-0672

TABLE 1.

Comparison of body weight and composition between 8- and 20-wk-old rats

	8 wk	20 wk
Body weight (g)	268.1 ± 6.3	471.3 ± 4.88^a
Epididymal weight (g)	1.91 ± 0.04	5.3 ± 0.45^a
Epididymal weight (%BW)	0.71 ± 0.04	1.12 ± 0.09^a
Retroperitoneal weight (g)	0.67 ± 0.1	3.3 ± 0.5^a
Retroperitoneal weight (%BW)	0.25 ± 0.04	0.70±.11^a
Leptin (ng/ml)	1.79 ± 0.23	2.84 ± 040^a
Insulin (ng/ml)	1.64 ± 0.39	3.04 ± 0.48^a

Sprague Dawley rats fed standard chow ad libitum were killed at 8 and 20 wk of age (five rats per age) for measures of body weight, retroperitoneal and epididymal fat pad weights, and serum leptin and insulin levels. Fat pad weights are presented as raw weights and as a percentage per gram of body weight (%BW). Data are presented as mean ± SEM.

P < 0.05, 8 vs. 20 wk.