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Research Articles

Calcium channel blockers: molecular docking and inhibition studies on carbonic anhydrase I and II isoenzymes

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Pages 1672-1680 | Received 13 Feb 2020, Accepted 25 Feb 2020, Published online: 09 Mar 2020
 

Abstract

Carbonic anhydrases (CAs) are potent dehydration of carbonic acid and catalyst of the reversible hydration of carbon dioxide. Here, CA I and CA II was purified from human erythrocytes using the simple chromatographic method and determined the interactions between some calcium channel blockers and the enzymes. Molecular docking studies were performed these compounds. It was found that calcium channel blockers (nimodipine, nilvadipine, nitrendipine, isradipine, and nifedipine) exhibit potential inhibitor properties for hCA I and hCA II. IC50 values of hCA I were in the range of 9.24-58.00 μM, and Ki constants were in the range of 7.60 ± 2.68-35.92 ± 16.01 μM. IC50 values of hCA II were in the range of 70.00-138.60 μM, and Ki constants were in the range of 48.30 ± 9.81-162.35 ± 20.47 μM. Nimodipine presented the highest docking score and had competitive inhibition, the benzene and pyridine rings were found to enter the cavity for hCA I. Nifedipine and isradipine did not affect hCA II. Among these drugs, nitrendipine was found to be the most potent inhibitor for hCA I and nimodipine for hCA II. These compounds may be useful for CA inhibitors.

Communicated by Ramaswamy H. Sarma

Acknowledgements

The authors thank Deniz Neziroğlu and Oya Büyükemir for their kind help suggestions during the preparation of the manuscript.

Disclosure statement

No potential conflict of interest was reported by the authors.

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