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Dias BB, da Silva Dantas FG, Galvão F, Cupozak-Pinheiro WJ, Wender H, Pizzuti L, Rosa PP, Tenório KV, Gatto CC, Negri M, Casagrande GA, de Oliveira KMP. Synthesis, structural characterization, and prospects for new cobalt (II) complexes with thiocarbamoyl-pyrazoline ligands as promising antifungal agents. J Inorg Biochem 2020; 213:111277. [PMID: 33045593 DOI: 10.1016/j.jinorgbio.2020.111277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/29/2020] [Accepted: 10/03/2020] [Indexed: 01/08/2023]
Abstract
Candida spp. cause invasive fungal infections. One species, Candida glabrata, may present intrinsic resistance to conventional antifungal agents, thereby increasing mortality rates in hospitalized patients. In this context, metal complexes present an alternative for the development of new antifungal drugs owing to their biological and pharmacological activities demonstrated in studies in the last decades. Accordingly, in this study we have synthesized and characterized two new Co(II) complexes with thiocarbamoyl-pyrazoline ligands to assess their antimicrobial, mutagenic, and cytotoxic potential. For antimicrobial activity, the broth microdilution method was performed against ATCC strains of Candida spp. and fluconazole dose-dependent isolates of C. glabrata obtained from urine samples. The Ames test was used to assess mutagenic potential. The reduction method of the MTS reagent (3 [4,5-dimethylthiazol-2-yl]-5-[3-carboxymethoxyphenyl]-2-[4-sulfophenyl]-2H-tetrazolium) was performed with HeLa, SiHa, and Vero cells to determine cytotoxicity. Both complexes exhibited fungistatic and fungicidal activity for the yeasts used in the study, demonstrating greater potential for C. glabrata ATCC 2001 and the C. glabrata CG66 isolate with a Minimum Inhibitory Concentration MIC from 3.90 to 7.81 μg mL-1 and fungicidal action from 7.81 to 15.62 μg mL-1. The complexes inhibited and degraded biofilms by up to 90% and did not present mutagenic and cytotoxic potential at the concentrations evaluated for MIC. Thus, the complexes examined herein suggest promising alternatives for the development of new antifungal drugs.
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Affiliation(s)
- Bianca Boni Dias
- Faculdade de Ciências da Saúde, Universidade Federal da Grande Dourados, Dourados, MS 79070-900, Brazil
| | - Fabiana Gomes da Silva Dantas
- Faculdade de Ciências Biológicas e Ambientais, Universidade Federal da Grande Dourados, Dourados, MS 79804-970, Brazil
| | - Fernanda Galvão
- Faculdade de Ciências da Saúde, Universidade Federal da Grande Dourados, Dourados, MS 79070-900, Brazil
| | | | - Heberton Wender
- Instituto de Física, Universidade Federal do Mato Grosso do Sul, Campo Grande, MS 79070-900, Brazil
| | - Lucas Pizzuti
- Grupo de Pesquisa em Síntese e Caracterização Molecular de Mato Grosso do Sul, Instituto de Química, Universidade Federal de Mato Grosso do Sul (Laboratório 2), Campo Grande, MS 79074-460, Brazil
| | - Persiely Pires Rosa
- Grupo de Pesquisa em Síntese e Caracterização Molecular de Mato Grosso do Sul, Instituto de Química, Universidade Federal de Mato Grosso do Sul (Laboratório 2), Campo Grande, MS 79074-460, Brazil
| | - Kátia Veronica Tenório
- Grupo de Pesquisa em Síntese e Caracterização Molecular de Mato Grosso do Sul, Instituto de Química, Universidade Federal de Mato Grosso do Sul (Laboratório 2), Campo Grande, MS 79074-460, Brazil
| | - Claudia Cristina Gatto
- Laboratório de Síntese Inorgânica e Cristalografia, Universidade de Brasília, Campus Universitário Darcy Ribeiro, 70.904-970 Brasília, DF, Brazil
| | - Melyssa Negri
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, Maringá, PR 87020-900, Brazil
| | - Gleison Antônio Casagrande
- Grupo de Pesquisa em Síntese e Caracterização Molecular de Mato Grosso do Sul, Instituto de Química, Universidade Federal de Mato Grosso do Sul (Laboratório 2), Campo Grande, MS 79074-460, Brazil.
| | - Kelly Mari Pires de Oliveira
- Faculdade de Ciências da Saúde, Universidade Federal da Grande Dourados, Dourados, MS 79070-900, Brazil; Faculdade de Ciências Biológicas e Ambientais, Universidade Federal da Grande Dourados, Dourados, MS 79804-970, Brazil.
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