Table 7.

DN transport with furosemide: maneuvers to enhance urine acidification

	HCO3−	TA	NH4+	Net Acid	Urine pH
Absolute excretion, μmol/min
HCO3− = 4 mM (Table 6)	0.37	0.49	0.97	1.09	6.23
HCO3− = 2 mM	0.36	0.50	0.99	1.12	6.22
Phosphate = 8 mM	0.32	1.02	0.99	1.68	6.16
Principal cell × 2	0.34	0.47	0.92	1.06	6.27
β-Cell × 10%	0.04	0.63	1.05	1.64	5.47
α-Cell × 2	0.13	0.58	1.24	1.68	5.88
Principal and α × 2	0.12	0.57	1.19	1.64	5.90
α-Cell × 3	0.02	0.65	1.50	2.13	5.15
Absolute reabsorption, μmol/min
HCO3− = 4 mM (Table 6)	0.49	−0.10	−0.29	0.88
HCO3− = 2 mM	0.07	0.01	−0.30	0.36
Phosphate = 8 mM	0.54	−0.24	−0.30	1.08
Principal cell × 2	0.53	−0.08	−0.24	0.85
β-Cell × 10%	0.82	−0.24	−0.37	1.43
α-Cell × 2	0.73	−0.19	−0.55	1.47
Principal and α × 2	0.75	−0.18	−0.50	1.43
α-Cell × 3	0.85	−0.26	−0.81	1.92