1
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Dal Molin TR, Pappis L, Kolinski Machado A, Domingos da Silveira G, Rorato Sagrillo M, Gonzalez Urquhart C, de Carvalho LM, Noremberg S, Viana C. Adulterated dietary supplements commercialized in Brazil: development of a screening method and a preliminary study of cytotoxicity. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2024:1-22. [PMID: 39083485 DOI: 10.1080/19440049.2024.2385712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 08/02/2024]
Abstract
The high consumption of dietary supplements was a fundamental driver for the creation of the regulatory framework by the Brazilian governmental authorities. However, the regulatory agencies lack official low-cost methodologies to evaluate the quality of food supplements. A preliminary screening method by HPLC-DAD was proposed and validated for screening and quantification of adulterants in dietary supplements. The limits of detection and quantification were <0.11 and 0.37 µg.g-1, respectively. The method was applied for the investigation of ten unauthorized substances (spironolactone, hydrochlorothiazide, furosemide, clenbuterol, testosterone, testosterone propionate, yohimbine, vardenafil, tadalafil, and sildenafil) with a time of analysis of <5 min. Sixteen percent of the 44 samples analyzed had at least one adulterant at or above therapeutic concentrations. Subsequently, in vitro evaluations were performed of the potential cytotoxicity to evaluate the cell viability, DNA damage, determination of nitric oxide levels, and quantification of reactive oxygen species. Despite the necessity of further studies, the results indicate a relationship between the presence of adulterants in food supplements and a potential cytotoxic effect.
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Affiliation(s)
- Thaís R Dal Molin
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | - Lauren Pappis
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
- Graduate Program in Nanosciences, Franciscan University, Santa Maria, Brazil
| | | | | | | | - Carolina Gonzalez Urquhart
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | - Leandro M de Carvalho
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
- Department of Chemistry, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | - Simone Noremberg
- Department of Chemistry, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
| | - Carine Viana
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria (UFSM), Santa Maria, Brazil
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2
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Oliveira LM, Siqueira FS, Silva MT, Machado JVC, Cordeiro CF, Diniz LF, Campos MMA, Franco LL, Souza TB, Hawkes JA, Carvalho DT. Synthesis and antimicrobial activity of molecular hybrids based on eugenol and chloramphenicol pharmacophores. Folia Microbiol (Praha) 2023; 68:823-833. [PMID: 37118368 DOI: 10.1007/s12223-023-01057-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/14/2023] [Indexed: 04/30/2023]
Abstract
In the constant search for new pharmacological compounds, molecular hybridisation is a well-known technique whereby two or more known pharmacophoric subunits are combined to create a new "hybrid" compound. This hybrid is expected to maintain the characteristics of the original compounds whilst demonstrating improvements to their pharmacological action. Accordingly, we report here a series of molecular hybrid compounds based upon eugenol and chloramphenicol pharmacophores. The hybrid compounds were screened for their in vitro antimicrobial potential against Gram-negative and Gram-positive bacteria and also rapidly growing mycobacteria (RGM). The results highlight that the antimicrobial profiles of the hybrid compounds improve in a very clear fashion when moving through the series. The most prominent results were found when comparing the activity of the hybrid compounds against some of the multidrug-resistant clinical isolates of Pseudomonas aeruginosa, methicillin-resistant clinical isolates of Staphylococcus aureus (MRSA) and clinical isolates of rapidly growing mycobacteria.
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Affiliation(s)
- Lucas M Oliveira
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Fallon S Siqueira
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Michelle T Silva
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - José V C Machado
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Cleydson F Cordeiro
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Lívia F Diniz
- Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, MG, 37130-001, Brazil
| | - Marli M A Campos
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil
| | - Lucas L Franco
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Thiago B Souza
- Escola de Farmácia, Universidade Federal de Ouro Preto, Ouro Preto, MG, 35400-000, Brazil
| | - Jamie A Hawkes
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil
| | - Diogo T Carvalho
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, D-208E, Alfenas, MG, Brazil.
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3
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Lapa IR, Dos Santos Siqueira F, Cordeiro CF, de Campos MMA, Bonfilio R, de Figueiredo Diniz L, Pereira GM, Hawkes JA, Franco LL, Carvalho DT. Combining eugenol and dihydroeugenol with a piperazine moiety to create new antimicrobial agents that are effective against resistant species. Microb Pathog 2023; 184:106369. [PMID: 37778705 DOI: 10.1016/j.micpath.2023.106369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/18/2023] [Accepted: 09/20/2023] [Indexed: 10/03/2023]
Abstract
Historically, the piperazine moiety has been demonstrated to possess pharmacophoric properties, and has subsequently been incorporated in many drugs that have antitumor, antimalarial, antiviral, antibacterial and antifungal properties. Derivatives of eugenol and dihydroeugenol have also been reported as being bioactive compounds. This study reports the synthesis of a range of eugenol/dihydroeugenol - piperazine derivatives which have been tested as antimicrobial compounds against Gram positive, Gram negative and rapid-growing mycobacteria (RGM). The rationale employed in the design of the structural pattern of these new derivatives, provides useful insights into the structure-activity relationships (SAR) of the series. Antimicrobial activity tests were extremely encouraging, with the majority of the synthesised compounds being more active than eugenol and dihydroeugenol starting materials. The antimicrobial potential was most notable against the Gram-negative species K. pneumoniae and P. aeruginosa, but there was also significant performance against the Gram-positive strains S. epidermidis and S. aureus and the Rapidly Growing Mycobacteria (RGM) strains tested. Tests using the synthesised compounds against multidrug-resistance clinical (MDR) isolates also showed high activity. The biofilm inhibition tests using M. fortuitum showed that all evaluated derivatives were able to inhibit biofilm formation even at low concentrations. In terms of structural-activity relationships; the results generated by this study demonstrate that the compounds with bulky substituents on the piperazine subunit were much more active than those with less bulky groups, or no groups. Importantly, the derivatives with a sulfonamide side chain were the most potent compounds. A further observation was that those compounds with a para-substituted benzenesulfonamide ring stand out, regardless of whether this substituent is a donor or an electron-withdrawing group.
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Affiliation(s)
- Igor Rodrigues Lapa
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Fallon Dos Santos Siqueira
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, RS, 9710590, Brazil
| | - Cleydson Finotti Cordeiro
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | | | - Rudy Bonfilio
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Lívia de Figueiredo Diniz
- Instituto de Ciências Biomédicas, Departamento de Patologia e Parasitologia, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Gabriella Martiniano Pereira
- Instituto de Ciências Biomédicas, Departamento de Patologia e Parasitologia, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Jamie Anthony Hawkes
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Lucas Lopardi Franco
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Diogo Teixeira Carvalho
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil.
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4
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Siqueira FDS, Siqueira JD, Denardi LB, Moreira KS, Lima Burgo TA, de Lourenço Marques L, Machado AK, Davidson CB, Chaves OA, Anraku de Campos MM, Back DF. Antibacterial, antifungal, and anti-biofilm effects of sulfamethoxazole-complexes against pulmonary infection agents. Microb Pathog 2023; 175:105960. [PMID: 36587926 DOI: 10.1016/j.micpath.2022.105960] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 12/31/2022]
Abstract
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 AuI, AgI, HgII, CdII, NiII, and CuII. 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 AgI-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.
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Affiliation(s)
- Fallon Dos Santos Siqueira
- 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
| | - Josiéli Demetrio Siqueira
- 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
| | - Laura Bedin Denardi
- 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
| | - Kelly Schneider Moreira
- 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
| | - Thiago Augusto Lima Burgo
- 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
| | - Lenice de Lourenço Marques
- 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
| | - Alencar Kolinski Machado
- Laboratory of Genetics and Cell Culture, Graduate Program in Nanosciences, Franciscan University, Andradas' Street, 1614, zip code:, 97010-032, Santa Maria, Brazil
| | - Carolina Bordin Davidson
- Laboratory of Genetics and Cell Culture, Graduate Program in Nanosciences, Franciscan University, Andradas' Street, 1614, zip code:, 97010-032, Santa Maria, Brazil
| | - Otávio Augusto Chaves
- 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
| | - Marli Matiko Anraku de Campos
- 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.
| | - Davi Fernando Back
- 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.
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5
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Paul S, Alam MA, Pal TK, Uddin MN, Islam MM, Sheikh MC. Quantum computational, spectroscopic investigation, molecular docking, and in vitro pharmacological studies of sulfonamide Schiff base. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Falkievich DB, Martínez Medina JJ, Alegre WS, López Tévez LL, Franca CA, Ferrer EG, Williams PAM. Computational studies, antimicrobial activity, inhibition of biofilm production and safety profile of the cadmium complex of 1,10‐phenanthroline and cyanoguanidine. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - Carlos A. Franca
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
| | - Evelina G. Ferrer
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
| | - Patricia A. M. Williams
- CEQUINOR, CONICET/UNLP, Facultad de Ciencias Exactas, Universidad Nacional de La Plata La Plata Argentina
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7
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Pappis L, Ramos AP, Fontana T, Sangoi GG, Dornelles RC, Dolwitsch CB, Sagrillo MR, Cadoná FC, Machado AK, Bauermann LDF. Randia ferox (Cham & Schltdl) DC.: phytochemical composition, in vitro cyto- and genotoxicity analyses. Nat Prod Res 2021; 36:4170-4176. [PMID: 34348056 DOI: 10.1080/14786419.2021.1960522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Randia ferox is a Brazilian native species used in folk medicine. Scientific information regarding the toxicology and phytochemistry of this plant remains unclear. We aimed to produce a R. ferox extract, identify its chemical matrix, and evaluate its safety profile. The extract chemical composition was accessed through UHPLC-MS/MS. Mononuclear cells, erythrocytes, fibroblasts, macrophages, and kidney cells were subjected to extract concentration-response curve testing. The cellular viability, proliferation, dsDNA release, reactive oxygen species (ROS), nitric oxide (NO), hemolysis, and DNA damage were determined. Ten molecules were found in the extract matrix. Most of the tested concentrations can be considered safe. Cellular viability, proliferation, dsDNA release, and NO remained at similar levels to the control. The extract increased ROS in macrophages. None of the tested concentrations induced DNA damage or hemolysis. The data suggest R. ferox extract contains several bioactive molecules and has a safety profile in vitro.
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Affiliation(s)
- Lauren Pappis
- Pharmaceutical Sciences Graduate Program, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Laboratory of Cellular Culture and Genetics, Franciscan University, Santa Maria, RS, Brazil
| | - Andiara Prates Ramos
- Laboratory of Cellular Culture and Genetics, Franciscan University, Santa Maria, RS, Brazil.,Nanosciences Graduate Program, Franciscan University, Santa Maria, RS, Brazil
| | - Tuyla Fontana
- Laboratory of Cellular Culture and Genetics, Franciscan University, Santa Maria, RS, Brazil
| | | | | | | | - Michele Rorato Sagrillo
- Laboratory of Cellular Culture and Genetics, Franciscan University, Santa Maria, RS, Brazil.,Nanosciences Graduate Program, Franciscan University, Santa Maria, RS, Brazil
| | - Francine Carla Cadoná
- Laboratory of Cellular Culture and Genetics, Franciscan University, Santa Maria, RS, Brazil
| | - Alencar Kolinski Machado
- Laboratory of Cellular Culture and Genetics, Franciscan University, Santa Maria, RS, Brazil.,Nanosciences Graduate Program, Franciscan University, Santa Maria, RS, Brazil
| | - Liliane de Freitas Bauermann
- Pharmaceutical Sciences Graduate Program, Federal University of Santa Maria, Santa Maria, RS, Brazil.,Pharmacology Graduate Program, Federal University of Santa Maria, Santa Maria, RS, Brazil
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8
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Siqueira FDS, Alves CFDS, Machado AK, Siqueira JD, Santos TD, Mizdal CR, Moreira KS, Teixeira Carvalho D, Bonez PC, Urquhart CG, Santos RCV, Sagrillo MR, Marques LDL, Back DF, de Campos MMA. Molecular docking, quorum quenching effect, antibiofilm activity and safety profile of silver-complexed sulfonamide on Pseudomonas aeruginosa. BIOFOULING 2021; 37:555-571. [PMID: 34225503 DOI: 10.1080/08927014.2021.1939019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 05/26/2021] [Accepted: 05/31/2021] [Indexed: 06/13/2023]
Abstract
Microbial infections caused by sessile microorganisms are known to be a more challenging issue than infections caused by the same microorganisms in the planktonic state. Pseudomonas aeruginosa is an opportunistic pathogen and biofilm-forming agent. This species presents intense cellular communication mediated by signaling molecules. This process is known as quorum sensing (QS) and induces the transcription of specific genes that favors cell density growth and three-dimensional bacterial grouping. In this context, the discovery of compounds capable of inhibiting the action of the QS signaling molecules seems to be a promising strategy against biofilms. This work aimed to evaluate the anti-biofilm action and the in vitro safety profile of a sulfamethoxazole-Ag complex. The results obtained indicate potential anti-biofilm activity through QS inhibition. In silico tests showed that the compound acts on the las and pqs systems, which are the main regulators of biofilm formation in P. aeruginosa. Additionally, the molecule proved to be safe for human peripheral blood mononuclear cells.
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Affiliation(s)
| | | | - Alencar Kolinski Machado
- Graduate Program in Nanoscience, Franciscan University, Santa Maria, Brazil, Santa Maria, Brazil
| | | | - Thiago Dos Santos
- Research Center on Natural and Synthetic Products, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Caren Rigon Mizdal
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | | | - Diogo Teixeira Carvalho
- Pharmaceutical Chemistry Research Laboratory, Federal University of Alfenas, Alfenas, Brazil
| | - Pauline Codernonsi Bonez
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | | | | | - Michele Rorato Sagrillo
- Graduate Program in Nanoscience, Franciscan University, Santa Maria, Brazil, Santa Maria, Brazil
| | - Lenice de Lourenço Marques
- Farroupilha Federal Institute, São Vicente do Sul Campus, Zip code: 97420-000, São Vicente do Sul, Brazil
| | - Davi Fernando Back
- Graduate Program in Chemistry, Federal University of Santa Maria, Santa Maria, Brazil
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9
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Abstract
Rapidly growing mycobacteria (RGM) causing infections by biofilm formation. Semi-quantitative method of biofilm formation was adapted for macrotechnics. Sulphonamides complexed with metals is a promising anti-adhesion agent. Sulphonamides complexed with metal is a possible inhibitor of signaling of biofilm formation.
Rapidly growing mycobacteria (RGM) are found in non-sterile water and often associated with severe post-surgical infections and affect immunocompromised patients. In addition, RGM can prevent the host's immune response and have the ability to adhere to and form biofilms on biological and synthetic substrates, making pharmacological treatment difficult because conventional antimicrobials are ineffective against biofilms. Thus, there is an urgent need for new antimicrobial compounds that can overcome these problems. In this context, sulfonamides complexed with Au, Cd, Ag, Cu, and Hg have shown excellent activity against various microorganisms. Considering the importance of combating RGM-associated infections, this study aimed to evaluate the activity of sulfonamide metal complexes against RGM biofilm. The sulfonamides were tested individually for their ability to inhibit mycobacterial formation and destroy the preformed biofilm of standard RGM strains, such as Mycobacterium abscessus, M. fortuitum, and M. massiliense. All sulfonamides complexed with metals could reduce, at subinhibitory concentrations, the adhesion and biofilm formation of three RGM species in polystyrene tubes. It is plausible that the anti-biofilm capacity of the compounds is due to the inhibition of c-di-GMP synthesis, which is an important signal for RGM biofilm formation. Hence, the impacts and scientific contribution of this study are based on the discovery of a potential new therapeutic option against RGM-associated biofilm infections. Sulfonamides complexed with metals have proven to be a useful and promising tool to reduce microbial adhesion on inert surfaces, stimulating the improvement of methodologies to insert compounds as new antibacterial and coating agents for medical and hospital materials.
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10
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Azevedo-Barbosa H, do Vale BP, Guidolin Rossi G, Dos Santos Siqueira F, Bordignon Guterres K, de Campos MMA, Dos Santos T, Anthony Hawkes J, Ferreira Dias D, Neiva Lavorato S, de Souza TB, Teixeira Carvalho D. Design, Synthesis, Antimicrobial Evaluation and in Silico Studies of Eugenol-Sulfonamide Hybrids. Chem Biodivers 2021; 18:e2100066. [PMID: 33829648 DOI: 10.1002/cbdv.202100066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/04/2021] [Indexed: 01/14/2023]
Abstract
Using molecular hybridization, specific sulfonamide derivatives of eugenol were synthesized with subtle modifications in the allylic chain of the eugenol subunit (and also in the nature of the substituent group in the sulfonamide aromatic ring) which allowed us to study the influence of structural changes on the antimicrobial potential of the hybrids. Antimicrobial test results showed that most of the synthesized hybrid compounds showed good activity with better results than the parent compounds. Molecular docking studies of the hybrids with the essential bacterial enzyme DHPS showed complexes with low binding energies, suggesting that DHPS could be a possible target for the antibacterial sulfonamide-eugenol hybrids. Furthermore, most of the final compounds presented similar docking poses to that of the crystallographic ligand sulfamethoxazole. The results obtained allow us to conclude that these are promising compounds for use as new leads in the search for new antibacterial sulfonamides.
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Affiliation(s)
- Helloana Azevedo-Barbosa
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva 700, Alfenas, 37130-001, MG, Brazil
| | - Bianca Pereira do Vale
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva 700, Alfenas, 37130-001, MG, Brazil
| | - Grazielle Guidolin Rossi
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Av. Roraima No. 1000, Cidade Universitária, Camobi, Santa Maria, 97105-900, RS, Brazil
| | - Fallon Dos Santos Siqueira
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Av. Roraima No. 1000, Cidade Universitária, Camobi, Santa Maria, 97105-900, RS, Brazil
| | - Kevim Bordignon Guterres
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Av. Roraima No. 1000, Cidade Universitária, Camobi, Santa Maria, 97105-900, RS, Brazil
| | - Marli Matiko Anraku de Campos
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, Av. Roraima No. 1000, Cidade Universitária, Camobi, Santa Maria, 97105-900, RS, Brazil
| | - Thiago Dos Santos
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café, Ribeirão Preto, 14040-903, SP, Brazil
| | - Jamie Anthony Hawkes
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva 700, Alfenas, 37130-001, MG, Brazil
| | - Danielle Ferreira Dias
- Instituto de Química, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, 37130-001, MG, Brazil
| | - Stefânia Neiva Lavorato
- Centro das Ciências Biológicas e da Saúde, Universidade Federal do Oeste da Bahia, Rua Professor José Seabra de Lemos, 316, Recanto dos Pássaros, Barreiras, 47808-021, BA, Brazil
| | - Thiago Belarmino de Souza
- Escola de Farmácia, Universidade Federal de Ouro Preto, Morro do cruzeiro, Bauxita, Ouro Preto, 35400-000 MG, Brazil
| | - Diogo Teixeira Carvalho
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Rua Gabriel Monteiro da Silva 700, Alfenas, 37130-001, MG, Brazil
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11
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Hamad A, Abbas Khan M, Ahmad I, Imran A, Khalil R, Al-Adhami T, Miraz Rahman K, Quratulain, Zahra N, Shafiq Z. Probing sulphamethazine and sulphamethoxazole based Schiff bases as urease inhibitors; synthesis, characterization, molecular docking and ADME evaluation. Bioorg Chem 2020; 105:104336. [DOI: 10.1016/j.bioorg.2020.104336] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/27/2020] [Accepted: 09/29/2020] [Indexed: 12/11/2022]
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12
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Metal center ion effects on photoinactivating rapidly growing mycobacteria using water-soluble tetra-cationic porphyrins. Biometals 2020; 33:269-282. [PMID: 32980947 DOI: 10.1007/s10534-020-00251-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 09/16/2020] [Indexed: 12/18/2022]
Abstract
Rapidly growing mycobacteria (RGM) are pathogens that belong to the mycobacteriaceae family and responsible for causing mycobacterioses, which are infections of opportunistic nature and with increasing incidence rates in the world population. This work evaluated the use of six water-soluble cationic porphyrins as photosensitizers for the antimicrobial photodynamic therapy (aPDT) of four RGM strains: Mycolicibacterium fortuitum, Mycolicibacterium smeagmatis, Mycobacteroides abscessus subs. Abscessus, and Mycobacteroides abscessus subsp. massiliense. Experiments were conducted with an adequate concentration of photosensitizer under white-light irradiation conditions over 90 min and the results showed that porphyrins 1 and 2 (M = 2H or ZnII ion) were the most effective and significantly reduced the concentration of viable mycobacteria. The present work shows the result is dependent on the metal-center ion coordinated in the cationic porphyrin core. Moreover, we showed by atomic force microscopy (AFM) the possible membrane photodamage caused by reactive oxygen species and analyzed the morphology and adhesive force properties. Tetra-positively charged and water-soluble metalloporphyrins may be promising antimycobacterial aPDT agents with potential applications in medical clinical cases and bioremediation.
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Alvarenga DJ, Matias LMF, Oliveira LM, Leão LPMDO, Hawkes JA, Raimundo BVB, Castro LDFD, Campos MMAD, Siqueira FDS, Santos TD, Carvalho DT. Exploring how structural changes to new Licarin A derivatives effects their bioactive properties against rapid growing mycobacteria and biofilm formation. Microb Pathog 2020; 144:104203. [PMID: 32304794 DOI: 10.1016/j.micpath.2020.104203] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/05/2020] [Accepted: 04/10/2020] [Indexed: 12/18/2022]
Abstract
Several species of rapidly growing mycobacteria (RGM) have been associated with biofilms in areas such as biomedical devices, water distribution systems, cosmetic surgery, and catheter-related blood infections. Biofilms which exhibit antimicrobial resistance such as those formed by the genus Mycobacterium pose a significant risk to health and are of particular interest to researchers. Licarin A (a neolignan found in numerous plant species e.g. nutmeg) has been reported to show a wide range of biological actions including anti-inflammatory, antioxidant, and antibacterial properties. The aim of this study was to prepare a set of Licarin A derivatives and investigate the impact of specific structural changes on its antimycobacterial ability, and its effect on the biofilm formation of RGM species. Initially, the phenolic sub-unit and alkenyl side chain of Licarin A were modified to create derivatives with a higher partition coefficient; as the activity of a compound against mycobacteria seems to be strongly influenced by its hydrophobicity. Further, polar groups were inserted into the side chain to change the hydrophilic-lipophilic profile of the molecules. Results showed variability in the susceptibility profile of mycobacteria against the Licarin A derivatives under analysis. A number of the derivatives showed significant inhibitory activity of planktonic growth of the three strains of mycobacteria used, with even lower MIC values than those observed with reference drugs and Licarin A itself. Cytotoxicity assays showed they also have low toxicity, confirming that structural modifications to the Licarin A have made improvements to its antimycobacterial properties.
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Affiliation(s)
- Dalila Junqueira Alvarenga
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Laira Maria Faria Matias
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Lucas Martins Oliveira
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | | | - Jamie Anthony Hawkes
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Breno Vilas Boas Raimundo
- Instituto de Ciências Biomédicas, Departamento de Microbiologia e Imunologia, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | - Lívia de Figueiredo Diniz Castro
- Instituto de Ciências Biomédicas, Departamento de Microbiologia e Imunologia, Universidade Federal de Alfenas, MG, 37130-001, Brazil
| | | | - Fallon Dos Santos Siqueira
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal de Santa Maria, RS, 9710590, Brazil
| | - Thiago Dos Santos
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, SP, 14040-903, Brazil
| | - Diogo Teixeira Carvalho
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Universidade Federal de Alfenas, MG, 37130-001, Brazil.
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Dhar Y, Han Y. Current developments in biofilm treatments: Wound and implant infections. ENGINEERED REGENERATION 2020. [DOI: 10.1016/j.engreg.2020.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Quorum Sensing as Antivirulence Target in Cystic Fibrosis Pathogens. Int J Mol Sci 2019; 20:ijms20081838. [PMID: 31013936 PMCID: PMC6515091 DOI: 10.3390/ijms20081838] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/11/2019] [Accepted: 04/11/2019] [Indexed: 12/17/2022] Open
Abstract
Cystic fibrosis (CF) is an autosomal recessive genetic disorder which leads to the secretion of a viscous mucus layer on the respiratory epithelium that facilitates colonization by various bacterial pathogens. The problem of drug resistance has been reported for all the species able to colonize the lung of CF patients, so alternative treatments are urgently needed. In this context, a valid approach is to investigate new natural and synthetic molecules for their ability to counteract alternative pathways, such as virulence regulating quorum sensing (QS). In this review we describe the pathogens most commonly associated with CF lung infections: Staphylococcus aureus, Pseudomonas aeruginosa, species of the Burkholderia cepacia complex and the emerging pathogens Stenotrophomonas maltophilia, Haemophilus influenzae and non-tuberculous Mycobacteria. For each bacterium, the QS system(s) and the molecules targeting the different components of this pathway are described. The amount of investigations published in the last five years clearly indicate the interest and the expectations on antivirulence therapy as an alternative to classical antibiotics.
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