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. 1989 Jun;86(11):4273–4276. doi: 10.1073/pnas.86.11.4273

Inhibition of K+ efflux and dehydration of sickle cells by [(dihydroindenyl)oxy]alkanoic acid: an inhibitor of the K+ Cl- cotransport system.

D Vitoux 1, O Olivieri 1, R P Garay 1, E J Cragoe Jr 1, F Galacteros 1, Y Beuzard 1
PMCID: PMC287433  PMID: 2726772

Abstract

[(Dihydroindenyl)oxy]alkanoic acid (DIOA) was recently introduced as a potent inhibitor of the K+Cl- cotransport system without side effects on other cation transport systems [Garay, R. P., Nazaret, C., Hannaert, P.A. & Cragoe, E. J., Jr. (1988) Mol. Pharmacol. 33, 696-701]. In sickle cells, an abnormal activation of this K+Cl- cotransport system was proposed to be involved in cell K+ loss and dehydration. We found that DIOA inhibited the abnormal sickle cell K+ loss and specifically reduced sickle cell density upon stimulation of the net outward K+Cl- cotransport--i.e., low pH, hypoosmolarity, and activation by N-ethylmaleimide. DIOA opens another therapeutic approach to sickle cell disease by inhibiting cell dehydration, which favors HbS polymerization and reduces erythrocyte deformability.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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