In vitro evaluation of antileishmanial activity of copper (I) complexes

Abstract

In the research for the development of new drugs for the therapy of American tegumentary leishmaniasis, copper has been studied for its antileishmania activity. This study aims to report the activity of three copper(I) complexes on parasites of the species L. amazonensis and L. guyanensis. The metal complexes were tested according to in vitro antileishmanial assays, against promastigote and amastigote forms of the most prevalent species in the state of Amazonas, Brazil. Cytotoxicity of the complexes was evaluated in murine macrophage-like cell line (MJ774). The results of the in vitro assays indicated that, among the copper complexes tested, the homoleptic phosphine complex [Cu(thp)4][PF6](thp=tris-hydroxymethylphosphine) presented promising activity against the evolutionary forms of L. amazonensis, and obtained a IC50 of  26.45 and 24.61 µM in a period of 48 and 72 h, respectively. The results for copper complex at concentration 160 µM in amastigote forms showed a decrease in the infection index (32% of infected cells) and, in the cytotoxicity assay with MJ774, 52.43% of cell viability was observed. The results showed that the complex [Cu(thp)4][PF6] presented significant biological activity, indicating a need for future in vivo studies.

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Published
2021-01-27
How to Cite
CHAGAS, Ana Flávia da Silva et al. In vitro evaluation of antileishmanial activity of copper (I) complexes. Acta Brasiliensis, [S.l.], v. 5, n. 1, p. 1-6, jan. 2021. ISSN 2526-4338. Available at: <http://revistas.ufcg.edu.br/actabra/index.php/actabra/article/view/474>. Date accessed: 02 dec. 2024. doi: https://doi.org/10.22571/2526-4338474.
Section
Parasitology