Antileishmanial activity of sulphonamide nanoemulsions targeting the β-carbonic anhydrase from Leishmania species.

Autor: da Silva Cardoso V; a Bioinovar-Biotecnologia: Unidade de Biocatálise, Bioprodutos e Bioenergia (BIOINOVAR) , Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil., Vermelho AB; a Bioinovar-Biotecnologia: Unidade de Biocatálise, Bioprodutos e Bioenergia (BIOINOVAR) , Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil., Ricci Junior E; b Departamento de Medicamentos, Laboratório de Desenvolvimento Galênico (LADEG) , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil., Almeida Rodrigues I; c Departamento de Produtos Naturais e Alimentos, Faculdade de Farmácia, Laboratório de Bioprospecção de Antimicrobianos Naturais (LABAN) , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil., Mazotto AM; a Bioinovar-Biotecnologia: Unidade de Biocatálise, Bioprodutos e Bioenergia (BIOINOVAR) , Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil., Supuran CT; d NEUROFARBA Department, Università degli Studi di Firenze , Sezione di Scienze Farmaceutiche , Florence , Italy.
Jazyk: angličtina
Zdroj: Journal of enzyme inhibition and medicinal chemistry [J Enzyme Inhib Med Chem] 2018 Dec; Vol. 33 (1), pp. 850-857.
DOI: 10.1080/14756366.2018.1463221
Abstrakt: The β-carbonic anhydrase (CA, EC 4.2.1.1) from Leishmania spp. (LdcCA) is effectively inhibited by aromatic/heterocyclic sulphonamides, in the low nanomolar range, but no in vitro antileishmanial activity was detected for such compounds. We formulated some of these sulphonamides as nanoemulsions (NEs) in clove oil, and tested them in vitro against Leishmania infantum MHOM/BR/1974/PP75 and Leishmania amazonensis IFLA/BR/1967/PH8 strains. Interesting inhibitory concentrations IC 50 were observed for some of the sulphonamides NEs, with IC 50 as low as 3.90 µM (NE-3F) and 2.24 µM (NE-5B) for L. amazonensis and 3.47 µM (NE-5B) for L. infantum. Some of the investigated NEs displayed toxicity for macrophages beyond the parasites. For the same nonoemulsions, a selective index (SI) greater than for Amphotericin B. Haemolytic assay using human red blood cells indicate that the NEs were less cytotoxic than amphotericin B, a widely used antifungal agent. NEs demonstrated to be an excellent strategy for increasing the penetration of these hydrophilic drugs through membranes, with a huge increase of efficacy over the sulphonamide CA inhibitor (CAI) alone.
Databáze: MEDLINE
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