Table 1. Plasma biochemical parameters and hormones in the groups fed a low phosphorus diet at the end of the experiment.

	LP	LP-Rap	NxLP	NxLP-Rap
Calcium, mg/dl	9.7 ± 0.1	9.8 ± 0.3	8.2 ± 0.2a	9.4 ± 0.2a
Phosphorus, mg/dl	7.9 ± 0.7	7.1 ± 0.4	7.7 ± 0.3	6.8 ± 0.3
Creatinine, mg/dl	0.53 ± 0.01	0.59 ± 0.01	0.93 ± 0.04a	1.05 ± 0.07a
Urea, mg/dl	31.0 ± 1.6	29.7 ± 1.7	62.3 ± 5.1a	81.6 ± 7.9a*
Cystatin C (ng/ml)	1315 ± 59	1212 ± 27	2496 ± 151a	2650 ± 171a
FGF23, pg/ml	310 ± 30	205 ± 19a*	641 ± 423	1201 ± 319 a
PTH, pg/ml	131.6 ± 15.5	141.3 ± 39.2	386.4 ± 64.0a	315.6 ± 73.1

FGF23, fibroblast growth factor 23; LP, rats with intact renal function fed a low phosphorus diet; LP-Rap, rats with intact renal function fed a low phosphorus diet and treated with rapamycin; NxLP, nephrectomized rats fed a low phosphorus diet; NxLP-Rap, nephrectomized rats fed a low phosphorus diet and treated with rapamycin; PTH, parathyroid hormone. Values are means ± SE.

^ap < 0.05 vs LP

*p < 0.05 vs its placebo counterpart.