Table 3.

Glomerular filtration rate (GFR) after infusion of sodium phosphate or sodium chloride in groups of rats

Group (n)	GFR, ml/min, mean (SD)					Slope/min	P value: slope = 0
	Time, min
	0	5	10	20	30
A: Intact + intestinal	4.21	3.92	4.04	3.63	3.60	−0.020	0.0082
Na phosphate infusion (7)	(1.15)	(0.82	(0.73)	(0.94)	(0.64)	(0.014)
B: Intact + intestinal	4.01	4.99	4.29	4.34	3.35	−0.031	0.012
NaCl infusion (5)	(1.70)	(0.98	(1.31)	(1.82)	(1.02)	(0.016)
C: Intact + gastric	4.13	4.55	5.06	5.38	4.03	0.009	0.63
Na phosphate infusion (7)	(1.01)	(1.67)	(1.97)	(1.58)	(0.97)	(0.045)
D: TPTX + intestinal	6.01	5.17	4.34	4.09	3.58	−0.074	0.0015
Na phosphate infusion (5)	(2.15)	(1.24)	(1.78)	(1.78)	(1.23)	(0.021)
E: TPTX + intestinal	4.45	6.19	4.23	3.93	3.69	−0.069	0.091
NaCl infusion (5)	(1.97)	(3.95)	(1.92)	(1.52)	(0.98)	(0.069)
F: Denervated + intestinal	1.42	1.84	1.61	1.50	1.60	−0.001	0.94
Na phosphate infusion (4)	(0.38)	(0.75)	(0.53)	(0.56)	(0.83)	(0.207)