Table 5.

Basolateral ${\mathit{Na}}^{+}-{\mathit{HCO}}_3^{-}$ cotransporter activity: effect of basolateral Na⁺ addition on pH_i in presence of EIPA and EIPA + DIDS

	n	0 Na+	High Na+	0 Na+
Neonatal PST
0.05 mM EIPA	6	7.41±0.06	7.97±0.04*	7.46±0.04
0.05 mM EIPA+0.1 mM
DIDS		7.34±0.10	7.55±0.08*	7.31±0.10
Adult PST
0.05 mM EIPA	5	7.43±0.14	7.92±0.11*	7.48±0.18
0.05 mM EIPA+0.1 mM
DIDS		7.28±0.13	7.47±0.13†	7.38±0.14

Values are means ± SE; n = no. of experiments.

^*P < 0.001 vs. 0 Na⁺-containing control and recovery;

^†P < 0.05 vs. 0 Na⁺-containing control.