Antibacterial, antifungal, and anti-biofilm effects of sulfamethoxazole-complexes against pulmonary infection agents.

Autor: Siqueira FDS; Mycobacteriology Laboratory, Graduate Program in Pharmaceutical Sciences, Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil., Siqueira JD; Inorganic Materials Laboratory, Graduate Program in Chemistry, Department of Chemistry Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil., Denardi LB; Mycobacteriology Laboratory, Graduate Program in Pharmaceutical Sciences, Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil., Moreira KS; Coulomb Electrostatic and Mechanochemical Laboratory, Graduate Program in Chemistry, Department of Chemistry, Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil., Lima Burgo TA; Coulomb Electrostatic and Mechanochemical Laboratory, Graduate Program in Chemistry, Department of Chemistry, Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil., de Lourenço Marques L; Inorganic Materials Laboratory, Graduate Program in Chemistry, Department of Chemistry Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil., Machado AK; Laboratory of Genetics and Cell Culture, Graduate Program in Nanosciences, Franciscan University, Andradas' Street, 1614, zip code:, 97010-032, Santa Maria, Brazil., Davidson CB; Laboratory of Genetics and Cell Culture, Graduate Program in Nanosciences, Franciscan University, Andradas' Street, 1614, zip code:, 97010-032, Santa Maria, Brazil., Chaves OA; Coimbra Chemistry Center - Institute of Molecular Sciences (CQC-IMS), Faculty of Science and Technology, Department of Chemistry, University of Coimbra, Rua Larga, 3004-535, Coimbra, Portugal., Anraku de Campos MM; Mycobacteriology Laboratory, Graduate Program in Pharmaceutical Sciences, Department of Clinical and Toxicological Analysis, Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil. Electronic address: laboratoriomycobacteriologia@gmail.com., Back DF; Inorganic Materials Laboratory, Graduate Program in Chemistry, Department of Chemistry Federal University of Santa Maria, Roraima Avenue 1000, zip code:, 97105-900, Santa Maria, Brazil. Electronic address: davi.f.back@ufsm.br.
Jazyk: angličtina
Zdroj: Microbial pathogenesis [Microb Pathog] 2023 Feb; Vol. 175, pp. 105960. Date of Electronic Publication: 2022 Dec 29.
DOI: 10.1016/j.micpath.2022.105960
Abstrakt: Antibiotic resistance associated with pulmonary infection agents has become a public health problem, being considered one of the main priorities for immediate resolution. Thus, to increase the therapeutic options in the fight against resistant microorganisms, the synthesis of molecules from pre-existing drugs has shown to be a promising alternative. In this sense, the present work reports the synthesis, characterization, and biological evaluation (against fungal and bacterial agents that cause lung infections) of potential metallodrugs based on sulfamethoxazole complexed with Au I , Ag I , Hg II , Cd II , Ni II , and Cu II . The minimal inhibitory concentration (MIC) value was used to evaluate the antifungal and antibacterial properties of the compounds. In addition, it was also evaluated the antibiofilm capacity in Pseudomonas aeruginosa, through the quantification of its biomass and visualization using atomic force microscopy. For each case, molecular docking calculations were carried out to suggest the possible biological target of the assayed inorganic complexes. Our results indicated that the novel inorganic complexes are better antibacterial and antifungal than the commercial antibiotic sulfamethoxazole, highlighting the Ag I -complex, which was able to inhibit the growth of microorganisms that cause lung diseases with concentrations in the 2-8 μg mL -1 range, probably at targeting dihydropteroate synthetase - a key enzyme involved in the folate synthesis. Furthermore, sulfamethoxazole complexes were able to inhibit the formation of bacterial biofilms at significantly lower concentrations than free sulfamethoxazole, probably mainly targeting the active site of LysR-type transcriptional regulator (PqsR). Overall, the present study reports preliminary results that demonstrate the derivatization of sulfamethoxazole with transition metal cations to obtain potential metallodrugs with applications as antimicrobial and antifungal against pulmonary infections, being an alternative for drug-resistant strains.
Competing Interests: Declaration of competing interest There are no conflicts of interest regarding the possible publication of our results related to the article Antibacterial, antifungal, and anti-biofilm effects of sulfamethoxazole-complexes against pulmonary infection agents.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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