Title : Intracellular pH regulation in freshly isolated suspensions of rabbit inner medullary collecting duct cells: role of Na+:H+ antiporter and H(+)-ATPase.

Pub. Date : 1990 Dec

PMID : 1966525






3 Functional Relationships(s)
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1 When cells were acidified by ammonium withdrawal, the initial pHi recovery rate was 0.33 +/- 0.02 pH unit/min; replacement of extracellular Na+ (130 mM) with N-methyl-D-glucamine+ reduced the pHi recovery rate to 0.08 +/- 0.02 pH unit/min, while addition of 0.1 mM amiloride in the presence of extracellular Na+ reduced the rate of pHi recovery to 0.02 +/- 0.02 pH unit/min. Amiloride glucose-6-phosphate isomerase Oryctolagus cuniculus
2 When cells were acidified by ammonium withdrawal, the initial pHi recovery rate was 0.33 +/- 0.02 pH unit/min; replacement of extracellular Na+ (130 mM) with N-methyl-D-glucamine+ reduced the pHi recovery rate to 0.08 +/- 0.02 pH unit/min, while addition of 0.1 mM amiloride in the presence of extracellular Na+ reduced the rate of pHi recovery to 0.02 +/- 0.02 pH unit/min. Amiloride glucose-6-phosphate isomerase Oryctolagus cuniculus
3 When cells were acidified by ammonium withdrawal, the initial pHi recovery rate was 0.33 +/- 0.02 pH unit/min; replacement of extracellular Na+ (130 mM) with N-methyl-D-glucamine+ reduced the pHi recovery rate to 0.08 +/- 0.02 pH unit/min, while addition of 0.1 mM amiloride in the presence of extracellular Na+ reduced the rate of pHi recovery to 0.02 +/- 0.02 pH unit/min. Amiloride glucose-6-phosphate isomerase Oryctolagus cuniculus