TABLE 1. Effect of 4 wk of CR or ADF on circulating hormones and growth factors.
Hormone or growth factor | Control | CR-25% | ADF-75% | ADF-85% | ADF-100% |
---|---|---|---|---|---|
IGF-1 (ng/ml) | 359 ± 52* | 197 ± 18# | 303 ± 39* | 270 ± 44* | 190 ± 19# |
IGFBP-3 (ng/ml) | 9.07 ± 1.21 | 8.16 ± 1.14 | 8.29 ± 0.91 | 7.92 ± 0.95 | 7.78 ± 0.87 |
Total ghrelin (pg/ml)a | 1003 ± 181 | 1229 ± 125 | 1244 ± 91 | 995 ± 101 | 1283 ± 140 |
Oct ghrelin (pg/ml)a | 155 ± 27* | 160 ± 19* | 191 ± 79* | 187 ± 63* | 292 ± 64 |
Des ghrelin (pg/ml)a | 847 ± 188 | 1068 ±144 | 1053 ± 30 | 807 ± 88 | 991 ± 91 |
Values are expressed as means ± SE. Means not sharing a common symbol are significantly different (P<0.05; one-way ANOVA with Tukey post hoc test for IGF-1; t test for ghrelin).
Ghrelin levels were analyzed in a subset of mice (n=3 per group), whereas IGF-1 and IGFBP-3 levels were analyzed in all mice (n=6 per group).