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do Prado Schneidewind FCC, de Castilho PF, Galvão F, de Andrade Dos Santos JV, da Silva Dantas FG, Negri M, da Silva Pinto L, Moraes CAF, Freitas J, de Souza PRB, Nogueira CR, de Oliveira KMP. Effects of bioconversion by Battus polydamas on the chemical composition of Aristolochia spp. and evaluation of antimicrobial activity and biocompatibility. Fitoterapia 2024; 175:105949. [PMID: 38583636 DOI: 10.1016/j.fitote.2024.105949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/04/2023] [Revised: 03/13/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
Aristolochia plants are emblematic from an ethnopharmacological viewpoint and are know to possess numerous biological properties, including antiseptic. However, the medicinal potential of these species is debatable because of their representative chemical constituents, aristolochic acids (AAs) and aristolactams (ALs), which are associated, for instance, with nephropathy and cancer. These contrasting issues have stimulated the development of approaches intended to detoxification of aristoloquiaceous biomasses, among which is included the bioconversion method using larvae of the specialist phytophagous insect Battus polydamas, previously shown to be viable for chemical diversification and to reduce toxicity. Thus, eleven Aristolochia spp. were bioconverted, and the antimicrobial activities of the plant methanolic extracts and its respective bioconversion products were evaluated. The best results were found for Aristolochia esperanzae, Aristolochia gibertii, and Aristolochia ringens against Bacillus cereus, with MIC ranging from 7.8 to 31.25 μg/mL. These three species were selected for chemical, antioxidant, cytotoxic, hemolytic, and mutagenic analyses. Chemical analysis revealed 65 compounds, 21 of them possible bioconversion products. The extracts showed potential to inhibit the formation and degradation of B. cereus biofilms. Extracts of A. gibertii and its bioconverted biomass showed antioxidant activity comparable to dibutylhydroxytoluene (BHT) standard. Bioconversion decreased the hemolytic activity of A. esperanzae and the cytotoxicities of A. esperanzae and A. gibertii. None of the extracts was found to be mutagenic. The bioactivities of the fecal extracts were maintained, and biocompatibility was improved. Therefore, the results obtained in this study reveal positive expectations about the natural detoxification process of the Aristolochia species.
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Affiliation(s)
| | | | - Fernanda Galvão
- Faculdade de Ciências de Saúde, Universidade Federal da Grande Dourados, Dourados, MS, Brazil
| | | | | | - Melyssa Negri
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, Maringá, PR, Brazil
| | - Luciano da Silva Pinto
- Centro de Ciências Exatas e de Tecnologia, Departamento de Química, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Carlos André Ferreira Moraes
- Centro de Ciências Exatas e de Tecnologia, Departamento de Química, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Joelcio Freitas
- Instituto Nacional da Mata Atlântica, Divisão de Ciências, Santa Teresa, ES, Brazil
| | | | - Cláudio Rodrigo Nogueira
- Faculdade de Ciências Exatas e Tecnologia, Universidade Federal da Grande Dourados, Dourados, MS, Brazil.
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de Campos LJ, Seleem MA, Feng J, Pires de Oliveira KM, de Andrade Dos Santos JV, Hayer S, Clayton JB, Kathi S, Fisher DJ, Ouellette SP, Conda-Sheridan M. Design, Biological Evaluation, and Computer-Aided Analysis of Dihydrothiazepines as Selective Antichlamydial Agents. J Med Chem 2023; 66:2116-2142. [PMID: 36696579 PMCID: PMC10056257 DOI: 10.1021/acs.jmedchem.2c01894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Chlamydia trachomatis (CT) causes the most prevalent sexually transmitted bacterial disease in the United States. The lack of drug selectivity is one of the main challenges of the current antichlamydial pharmacotherapy. The metabolic needs of CT are controlled, among others, by cylindrical proteases and their chaperones (e.g., ClpX). It has been shown that dihydrothiazepines can disrupt CT-ClpXP. Based on this precedent, we synthesized a dihydrothiazepine library and characterized its antichlamydial activity using a modified semi-high-throughput screening assay. Then, we demonstrated their ability to inhibit ClpX ATPase activity in vitro, supporting ClpX as a target. Further, our lead compound displayed a promising selectivity profile against CT, acceptable cytotoxicity, no mutagenic potential, and good in vitro stability. A two-dimensional quantitative structure-activity relationship (2D QSAR) model was generated as a support tool in the identification of more potent antichlamydial molecules. This study suggests dihydrothiazepines are a promising starting point for the development of new and selective antichlamydial drugs.
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Affiliation(s)
- Luana Janaína de Campos
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Mohamed A Seleem
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Jiachen Feng
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Kelly Mari Pires de Oliveira
- Faculty of Biological and Environmental Science, Federal University of Grande Dourados, Dourados, MS 79804-970, Brazil
| | | | - Shivdeep Hayer
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska 68182, United States
| | - Jonathan B Clayton
- Department of Biology, University of Nebraska at Omaha, Omaha, Nebraska 68182, United States.,Department of Food Science and Technology, University of Nebraska─Lincoln, Lincoln, Nebraska 68588, United States.,Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States.,Nebraska Food for Health Center, University of Nebraska─Lincoln, Lincoln, Nebraska 68508, United States
| | - Sharvath Kathi
- School of Biological Sciences, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Derek J Fisher
- School of Biological Sciences, Southern Illinois University, Carbondale, Illinois 62901, United States
| | - Scot P Ouellette
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Martin Conda-Sheridan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
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Cupozak-Pinheiro WJ, Araújo de Almeida-Apolonio A, Sasaki MH, Maran NH, Pires de Araújo R, Silva DBDS, Víctor de Andrade Dos Santos J, Barufatti A, Chang MR, Pires de Oliveira KM. Candida species contamination in drinking groundwater from residence wells in three municipalities of midwestern Brazil and the potential human health risks. Microb Pathog 2022; 169:105660. [PMID: 35764189 DOI: 10.1016/j.micpath.2022.105660] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 04/27/2022] [Revised: 06/03/2022] [Accepted: 06/25/2022] [Indexed: 10/17/2022]
Abstract
Groundwater represents one of the largest safe drinking water sources worldwide; however, it has been threatened by increased human activities in recent years. Candida species express virulence factors that contribute to the establishment and worsening of infections, although little is known about the virulence profiles of these species in potable groundwater. The aim of this study was to detect the presence of yeasts in groundwater from residential wells and to evaluate the antifungal susceptibility profile, hydrolytic enzyme production, adhesion capacity, and biofilm formation of Candida spp. Fifty yeasts representing nine genera were isolated: Candida (48%), Meyerozyma (20%), Pichia (8%), Exophiala (8%), Clavispora (4%), Kodamaea (4%), Rhodotorula (4%), Hanseniaspora (2%), and Kazachstania (2%). Candida parapsilosis was the most commonly isolated species, and approximately 29% of the Candida isolates were resistant to at least one azole. All Candida isolates were able to produce hydrolytic enzymes and adhere to polystyrene, and most were classified as hydrophobic. Candida spp. can establish and form biofilms when cultivated in different media such as Sabouraud broth, water, and calcium hypochlorite. The use of contaminated groundwater for human consumption represents a possible route for the transmission of clinically relevant yeasts that can cause fungal infections, especially in immunocompromised individuals. Therefore, it is important to evaluate and establish effective measures for groundwater treatment to ensure the quality and safety for consumption.
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Affiliation(s)
| | | | - Melina Hatsue Sasaki
- Faculty of Health Sciences, Federal University of Grande Dourados, Dourados, MS, 79804-970, Brazil
| | - Nayara Halimy Maran
- Faculty of Exact Sciences and Technology, Federal University of Grande Dourados, Dourados, MS, 79804-970, Brazil
| | - Renata Pires de Araújo
- Faculty of Exact Sciences and Technology, Federal University of Grande Dourados, Dourados, MS, 79804-970, Brazil
| | | | | | - Alexeia Barufatti
- Faculty of Biological and Environmental Science, Federal University of Grande Dourados, Dourados, MS, 79804-970, Brazil
| | - Marilene Rodrigues Chang
- Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, 79070-900, Brazil
| | - Kelly Mari Pires de Oliveira
- Faculty of Biological and Environmental Science, Federal University of Grande Dourados, Dourados, MS, 79804-970, Brazil.
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