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de Araújo ACJ, Freitas PR, Araújo IM, de Oliveira Borges JA, Gonçalves SA, Paulo CLR, Almeida RS, de Moraes Oliveira-Tintino CD, de Araújo-Neto JB, Dos Santos Nascimento IJ, de Araújo-Júnior JX, da Silva-Júnior EF, de Aquino TM, Junior FJBM, Marinho ES, Dos Santos HS, de Alencar Menezes IR, Tintino SR, Coutinho HDM, Braga MFBM. Assessment In vitro and In silico of the Activity of Thiadiazines as NorA Efflux Pump Inhibitors. Curr Microbiol 2024; 81:325. [PMID: 39182011 DOI: 10.1007/s00284-024-03836-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 08/08/2024] [Indexed: 08/27/2024]
Abstract
Antimicrobials fight microorganisms, preventing and treating infectious diseases. However, antimicrobial resistance (AMR) is a growing concern due to the inappropriate and excessive use of these drugs. Several mechanisms can lead to resistance, including efflux pumps such as the NorA pump in Staphylococcus aureus, which reduces the effectiveness of fluoroquinolones. Thiadiazines are heterocyclic compounds whose chemical structure resembles that of cephalosporins. Therefore, these compounds and their derivatives have been studied for their potential in combating increased bacterial resistance. To analyze this hypothesis, direct activity assays, antibiotic action-modifying activity, fluorescence assays to evaluate the retention of ethidium bromide inside bacteria, and molecular docking were carried out. These experiments involved serial dilutions in microplates against Staphylococcus aureus strain 1199B under the influence of six thiadiazine derivatives (IJ10, IJ11, IJ21, IJ22, IJ23, and IJ25). The tests revealed that, despite not showing effective direct activity, some thiadiazine derivatives (IJ11, IJ21, and IJ22) inhibited the function of the bromide pump both in microdilution tests and in fluorescence and docking assays. Particularly, the IJ11 compound stood out for its activity similar to efflux inhibitors, as well as its inhibition of the norfloxacin pump of this bacterium. Among the results of this study, it deserves to be highlighted for anchoring future experiments, as it represents the first investigation of this group of thiadiazine derivatives against the NorA pump.
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Affiliation(s)
| | | | | | | | | | | | | | | | - José Bezerra de Araújo-Neto
- Postgraduate Program in Biological Sciences, Biosciences Center, Federal University of Pernambuco, Recife, PE, 50740-570, Brazil
| | - Igor José Dos Santos Nascimento
- Laboratory of Medicinal Chemistry, Institute of Pharmaceutical Sciences, Federal University of Alagoas, Maceió, AL, 57072-900, Brazil
| | - João Xavier de Araújo-Júnior
- Laboratory of Medicinal Chemistry, Institute of Pharmaceutical Sciences, Federal University of Alagoas, Maceió, AL, 57072-900, Brazil
| | - Edeildo Ferreira da Silva-Júnior
- Biological and Molecular Chemistry Research Group, Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceió, AL, 57072-900, Brazil
| | - Thiago Mendonça de Aquino
- Laboratory of Synthesis and Research in Medicinal Chemistry, Research Group On Therapeutic Strategies-GPET, Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceió, AL, 57072-900, Brazil
| | | | - Emmanuel Silva Marinho
- Laboratory of Chemistry of Natural and Synthetic Product, State University of Ceará, UECE, Fortaleza, CE, Brazil
| | - Helcio Silva Dos Santos
- Laboratory of Chemistry of Natural and Synthetic Product, State University of Ceará, UECE, Fortaleza, CE, Brazil
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Silva VBD, Almeida-Bezerra JW, Pereira RLS, Alcântara BMD, Furlan CM, Coelho JJ, Coutinho HDM, Morais-Braga MFB, Oliveira AFMD. Chemical composition, antibacterial potential, and toxicity of the extracts from the stem bark of Hancornia speciosa Gomes (Apocynaceae). JOURNAL OF ETHNOPHARMACOLOGY 2024; 335:118631. [PMID: 39067831 DOI: 10.1016/j.jep.2024.118631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/15/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hancornia speciosa is a medicinal plant popularly used to treat different medical issues, including infectious diseases. Exploring the therapeutic potentialities of the extracts from medicinal plants combined with conventional antibiotic drugs is a promising horizon, especially considering the rising microbial resistance. AIM OF THE STUDY This study aimed to characterize the chemical composition of the ethereal (EEHS) and methanolic (MEHS) extracts of the stem bark of H. speciosa, and also evaluate their antibacterial and drug-modifying activity, and toxicity. MATERIALS AND METHODS The extracts were characterized by gas chromatography coupled to mass spectrometry (GC-MS). Additionally, total phenol and flavonoid contents were determined. The antibacterial and antibiotic-modifying activity was evaluated against strains of Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa using the serial microdilution method, obtaining the minimum inhibitory concentration (MIC). The toxicity assay was carried out using the Drosophila melanogaster model. RESULTS Thirty compounds were identified in the extracts of the stem bark of H. speciosa, with triterpenoids being predominant in both extracts. Additionally, fatty alcohols, carbohydrates, fatty acids, phenolic acids, and phytosterols were identified in both extracts. EEHS and MEHS extracts had considerable phenol contents (346.4 and 340.0 mg GAE/g, respectively). Flavonoids were detected in a lower proportion (7.6 and 6.9 mg QE/g, respectively). H. speciosa extracts did not display intrinsic antibacterial activity against the bacterial strains evaluated, however, they were capable of modifying the activity of gentamicin, erythromycin, and norfloxacin. EEHS increased the efficacy of norfloxacin against E. coli and S. aureus, reducing MIC values by 50%. MEHS potentiated the action of gentamicin against all bacterial strains, especially against E. coli. The extracts did not display toxicity at clinically relevant concentrations against D. melanogaster. CONCLUSION The stem bark of H. speciosa was considered a rich source of bioactive compounds. Our findings evidenced the therapeutic potential of H. speciosa extracts for the development of new pharmaceutical therapeutics against bacteria. Although the extracts did not exhibit intrinsic antibacterial activity, they enhanced the efficacy of commercial antibiotic drugs and were non-toxic at clinically relevant concentrations. Future studies are needed to elucidate the mechanisms of action of these extracts, ensuring their safety and efficacy.
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Affiliation(s)
- Viviane Bezerra da Silva
- Departamento de Botânica, Universidade Federal de Pernambuco - UFPE, Rua Professor Moraes Rego, s/n, Recife, Pernambuco, 50.670-901, Brazil.
| | - José Weverton Almeida-Bezerra
- Departamento de Ciências Biológicas, Universidade Regional do Cariri - URCA, Rua Cel. Antônio Luiz, 1161, Crato, Ceará, 63.105-000, Brazil
| | - Raimundo Luiz Silva Pereira
- Departamento de Ciências Biológicas, Universidade Regional do Cariri - URCA, Rua Cel. Antônio Luiz, 1161, Crato, Ceará, 63.105-000, Brazil
| | - Bruno Melo de Alcântara
- Departamento de Ciências Biológicas, Universidade Regional do Cariri - URCA, Rua Cel. Antônio Luiz, 1161, Crato, Ceará, 63.105-000, Brazil
| | - Cláudia Maria Furlan
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brazil
| | - Janerson José Coelho
- Universidade Estadual do Ceará - UECE, Faculdade de Educação, Ciências e Letras dos Inhamuns - CECITEC, Tauá, 63660-000, Ceará, Brazil
| | - Henrique Douglas Melo Coutinho
- Departamento de Química Biológica, Universidade Regional do Cariri - URCA, Rua Cel. Antônio Luiz, 1161, Crato, Ceará, 63.105-000, Brazil
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3
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Silva-Rodrigues RCD, Nóbrega-Alves DD, Néris-Andrade P, Oliveira-Barreto J, Benatti-Justino A, Salmen-Espindola F, de-Castro RD, Fechine-Tavares J, Sobral-da-Silva M, Sarmento-Guerra FQ, Cançado-Castellano LR. Antifungal activity of Annona crassiflora Mart. dichloromethane fraction against strains of C. albicans. BRAZ J BIOL 2024; 84:e278069. [PMID: 38865564 DOI: 10.1590/1519-6984.278069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 04/08/2024] [Indexed: 06/14/2024] Open
Abstract
Products derived from medicinal plants with antimicrobial activity are considered a promising alternative in the treatment of fungal infections. In this perspective, this study proposed to evaluate the antifungal activity of the dichloromethane fraction of Annona crassiflora Mart. against C. albicans strains. Tests were carried out to determine Minimum Inhibitory Concentration (MIC), Minimum Fungicide Concentration (MFC), microbial growth kinetics, fungal cell wall and membrane mechanisms of action, antifungal biofilm activity, and cytotoxic effects on human erythrocytes. The extract presented MIC and MFC values that ranged from 256 µg/mL to 1,024 µg/mL, with fungicidal activity in the microbial growth kinetics assay. The mechanism of action did not occur through damage to the cell wall or via binding to ergosterol in the membrane, though the fraction presents activity against biofilm and is not cytotoxic in human erythrocytes. The dichloromethane fraction of Annona crassiflora Mart. presented antifungal activity and reduced biofilm growth, without toxicity against human erythrocytes; however, further studies are needed to define its mechanism of action.
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Affiliation(s)
- R C da Silva-Rodrigues
- Universidade Federal da Paraíba - UFPB, Departamento de Clínica e Odontologia Social, Laboratório de Farmacologia Experimental e Cultura Celular, João Pessoa, PB, Brasil
| | - D da Nóbrega-Alves
- Universidade Federal da Paraíba - UFPB, Departamento de Clínica e Odontologia Social, Laboratório de Farmacologia Experimental e Cultura Celular, João Pessoa, PB, Brasil
| | - P Néris-Andrade
- Universidade Federal da Paraíba - UFPB, Departamento de Clínica e Odontologia Social, Laboratório de Farmacologia Experimental e Cultura Celular, João Pessoa, PB, Brasil
| | - J Oliveira-Barreto
- Universidade Federal da Paraíba - UFPB, Departmento de Ciências Farmacêuticas, Laboratório de Mycologia Clínica, João Pessoa, PB, Brasil
| | - A Benatti-Justino
- Universidade Federal de Uberlândia - UFU, Biologia Molecular e Laboratório de Bioquímica, Uberlândia, MG, Brasil
| | - F Salmen-Espindola
- Universidade Federal de Uberlândia - UFU, Biologia Molecular e Laboratório de Bioquímica, Uberlândia, MG, Brasil
| | - R Dias de-Castro
- Universidade Federal da Paraíba - UFPB, Departamento de Clínica e Odontologia Social, Laboratório de Farmacologia Experimental e Cultura Celular, João Pessoa, PB, Brasil
| | - J Fechine-Tavares
- Universidade Federal da Paraíba - UFPB, Departmento de Ciências Farmacêuticas, Laboratório de Tecnologia Farmacêutica, João Pessoa, PB, Brasil
| | - M Sobral-da-Silva
- Universidade Federal da Paraíba - UFPB, Departmento de Ciências Farmacêuticas, Laboratório de Tecnologia Farmacêutica, João Pessoa, PB, Brasil
| | - F Q Sarmento-Guerra
- Universidade Federal da Paraíba - UFPB, Departmento de Ciências Farmacêuticas, Laboratório de Mycologia Clínica, João Pessoa, PB, Brasil
| | - L R Cançado-Castellano
- Universidade Federal da Paraíba - UFPB, Escola Técnica de Saúde - ETS, Grupo de Pesquisa e Estudo de Imunologia Humana, João Pessoa, PB, Brasil
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Sá GCDAS, Gadelha TS, Fragoso SP, Pacheco MTB, Lima EDEO, Rocha HADEO, Uchôa AF, Gadelha CADEA. Protein fraction from Sesbania virgata (Cav.) Pers. seeds exhibit antioxidant and antifungal activities. AN ACAD BRAS CIENC 2024; 96:e20230043. [PMID: 38808874 DOI: 10.1590/0001-3765202420230043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/21/2024] [Indexed: 05/30/2024] Open
Abstract
Sesbania virgata (Cav.) Pers. seeds are protein sources with health and environmental benefits. In this research, proteins with lectin activity were identified in a protein fraction from S. virgata seeds (PFLA), as well its antioxidant and antimicrobial potentials, in addition to cytotoxic effects. To obtain PFLA, seed flour was homogenized in Glycine-NaOH (100 mM; pH 9.0; NaCl 150 mM) and precipitated in ammonium sulfate. PFLA concentrates bioactive lectins (32 HU/mL, 480 HU/gFa, 18.862 HU/mgP) and essential amino acids (13.36 g/100g protein). PFLA exerts antioxidant activity, acting as a promising metal chelating agent (~77% of activity). Analyzes of cell culture assay results suggest that antioxidant activity of PFLA may be associated with the recruitment of essential molecules to prevent the metabolic impairment of cells exposed to oxidative stress. PFLA (256 - 512 µg/mL) also exhibits antifungal activity, inhibiting the growth of Aspergillus flavus, Candida albicans, Candida tropicalis and Penicillium citrinum. Cytotoxic analysis indicates a tendency of low interference in the proliferation of 3T3 and HepG2 cells in the range of PFLA concentrations with biological activity. These findings support the notion that PFLA is a promising adjuvant to be applied in current policies on the management of metal ion chelation and fungal infections.
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Affiliation(s)
- Giulian César DA S Sá
- Universidade Federal do Sul e Sudeste do Pará, Folha 17, Quadra 04, Lote Especial, s/n, Nova Marabá, 68505-080 Marabá, PA, Brazil
| | - Tatiane S Gadelha
- Universidade Federal da Paraíba, Departamento de Biologia Molecular, Laboratório de Química de Proteínas e Peptídeos, Conjunto Presidente Castelo Branco III, 58050-585 João Pessoa, PB, Brazil
| | - Sinara P Fragoso
- Universidade Federal da Paraíba, Departamento de Engenharia de Alimentos, Campus Universitário III, Rua João Pessoa, s/n, 58220-000 Bananeiras, PB, Brazil
| | - Maria Teresa B Pacheco
- Instituto de Tecnologia de Alimentos, Av. Brasil, 2880, Vila Nova, 13070-178 Campinas, SP, Brazil
| | - Edeltrudes DE O Lima
- Universidade Federal da Paraíba, Departamento de Ciências Farmacêuticas, Laboratório de Atividades Antibacterianas e Antifúngicas de Produtos Bioativos Naturais e/ou Sintéticos, Conjunto Presidente Castelo Branco III, 58051-085 João Pessoa, PB, Brazil
| | - Hugo Alexandre DE O Rocha
- Universidade Federal do Rio Grande do Norte, Departamento de Bioquímica, Laboratório de Biotecnologia de Polímeros Naturais, Av. Passeio dos Girassóis, 655, Capim Macio, 59078-970 Natal, RN, Brazil
| | - Adriana F Uchôa
- Universidade Federal do Rio Grande do Norte, Departamento de Biologia Celular e Genética, Instituto de Medicina Tropical do Rio Grande do Norte, Laboratório de Proteomas e Micologia, Av. Passeio dos Girassóis, 655, Capim Macio, 59078-970 Natal, RN, Brazil
| | - Carlos Alberto DE A Gadelha
- Universidade Federal da Paraíba, Departamento de Biologia Molecular, Laboratório de Proteômica Estrutural, Conjunto Presidente Castelo Branco III, 58050-585 João Pesso, PB, Brazil
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Ramadwa TE, Makhubu FN, Eloff JN. The activity of leaf extracts, fractions, and isolated compounds from Ptaeroxylon obliquum against nine phytopathogenic fungi and the nematode Meloidogyne incognita. Heliyon 2024; 10:e28920. [PMID: 38596024 PMCID: PMC11002690 DOI: 10.1016/j.heliyon.2024.e28920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/11/2024] Open
Abstract
Phytopathogenic fungi and nematodes cause great losses in economically important crops and food production especially in developing countries. To minimize the use of fungicides and nematicides, researchers have concentrated on the use of natural products for crop disease prevention or control. The aim of the study was to investigate the antifungal activity of Ptaeroxylon obliquum leaf extracts, fractions, and isolated compounds (obliquumol and a mixture of lupeol and β-amyrin) and nematocidal activity of fractions (hexane, chloroform and 30% water in methanol and the isolated compounds) on Meloidogyne incognita. Nine phytopathogenic fungi (Aspergillus niger, A. parasiticus, Colletotrichum gloeosporioides, Fusarium oxysporum, Penicillium digitatum, P. expansum, P. italicum, P. janthinellum, and Rhizoctonia solani) were used for testing and nematocidal activity was determined on motility of plant parasitic nematode Meloidogyne incognita race 2 juveniles. Serial microdilution test was utilized to determine the minimum inhibitory concentration (MIC) of each sample against the fungus. Motility tests was done on the second-stage juveniles (J2s) of M. incognita. The most susceptible phytopathogenic fungal species to the acetone crude leaf extracts were A. niger, C. gloeosporioides and P. digitatum with MIC of 80 μg/ml which is considered pharmacological significant. Rhizoctonia solani was the most susceptible fungus against obliquumol and, lupeol and β-amyrin mixture with MIC values of 8 μg/ml and 16 μg/ml respectively. Lupeol & β-amyrin mixture had good activity on juvenile motility at high concentrations used which was significantly high (p ≤ 0.05) after 24 h, further incubation resulted in temporary paralysis at lower concentrations. Fractions and obliquumol showed good activity after 48 h, stable paralysis was observed up to 72 h. The extracts and isolated compounds may be useful as fungicides if the in vitro results can be confirmed under field conditions at levels not toxic to beneficial soil organisms.
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Affiliation(s)
- Thanyani Emelton Ramadwa
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, Florida Campus, University of South Africa, Private Bag X6, Florida, 1710, South Africa
| | - Fikile Nelly Makhubu
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Sciences, Florida Campus, University of South Africa, Private Bag X6, Florida, 1710, South Africa
| | - Jacobus Nicolaas Eloff
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort, 0110, Pretoria, South Africa
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Almeida-Bezerra JW, Pereira da Cruz R, Bezerra da Silva V, Da Silva Neto JX, Alves Lopes de Souza L, de Oliveira Bezerra de Sousa D, Monteiro Salgueiro Araujo N, Guimarães Gomes Silva R, Quefi B, Rau M, Andrade Rebelo R, Castro Dos Santos S, Everson da Silva L, Douglas Melo Coutinho H, Almeida Menezes S, Bezerra Morais-Braga MF, Morais de Oliveira AF. Exploring the Fluconazole-Resistance Modifying Activity and Potential Mechanism of Action of Fixed Oil from Caryocar coriaceum Wittm. (Caryocaraceae) against Candida Species. Chem Biodivers 2024; 21:e202301960. [PMID: 38196022 DOI: 10.1002/cbdv.202301960] [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: 12/08/2023] [Revised: 01/09/2024] [Accepted: 01/09/2024] [Indexed: 01/11/2024]
Abstract
The fixed oil from the inner mesocarp of Caryocar coriaceum Wittm. is used in the Chapada do Araripe region of Brazil for the treatment of genitourinary candidiasis. This study aimed to evaluate the chemical composition, antifungal activity, reduction of fungal virulence, and the preliminary toxicity of the fixed oil from the inner mesocarp of C. coriaceum tested against three Candida yeasts. The oil was characterized by gas chromatography (GC-MS and GC-FID). Antifungal activity was assessed using the serial microdilution method. Additionally, the potential of the oil as an enhancer of fluconazole action was tested at sub-inhibitory concentrations (MIC/8). The mechanism of action of C. coriaceum fixed oil was determined by evaluating the inhibition of morphological transition in Candida spp. The chemical composition of the fixed oil of C. coriaceum comprised both unsaturated and saturated fatty acids. Oleic (61 %) and palmitic (33 %) acids were the major constituents. Regarding its anti-Candida activity, the oil inhibited the growth of C. albicans (IC50 : 371 μg/mL) and C. tropicalis (IC50 : 830 μg/mL). Furthermore, the oil reversed the antifungal resistance of C. albicans and C. tropicalis, restoring the susceptibility to fluconazole and reducing their IC50 from 12.33 μg/mL and 362 μg/mL to 0.22 μg/mL and 13.93 μg/mL, respectively. The fixed oil of C. coriaceum completely inhibited the morphological transition of C. albicans and C. tropicalis at a concentration of 512 μg/mL, but exhibited limited low antifungal potential against C. krusei. The observed antifungal activity may be attributed to the overproduction of reactive oxygen species. Additionally, the oil showed no toxic effect on the Drosophila melanogaster in vivo model. The fixed oil from the inner mesocarp of C. coriaceum emerge as a strong candidate for the development of new pharmaceutical formulations to treat infections caused by Candida spp.
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Affiliation(s)
- José Weverton Almeida-Bezerra
- Department of Botany, Federal University of Pernambuco-UFPE, s/n, Rua Professor Moraes Rego, Recife, Pernambuco, 50.670-901, Brazil
| | - Rafael Pereira da Cruz
- Department of Biological Sciences, Regional University of Cariri-URCA, 1161, Rua Cel. Antônio Luiz, Crato, Ceará, 63.105-000, Brazil
| | - Viviane Bezerra da Silva
- Department of Biological Sciences, Regional University of Cariri-URCA, 1161, Rua Cel. Antônio Luiz, Crato, Ceará, 63.105-000, Brazil
| | - João Xavier Da Silva Neto
- Department of Biochemistry and Molecular Biology, Federal University of Ceara'-UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | - Larissa Alves Lopes de Souza
- Department of Biochemistry and Molecular Biology, Federal University of Ceara'-UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | | | - Nadine Monteiro Salgueiro Araujo
- Department of Biochemistry and Molecular Biology, Federal University of Ceara'-UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | - Rafael Guimarães Gomes Silva
- Department of Biochemistry and Molecular Biology, Federal University of Ceara'-UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | - Blasco Quefi
- Department of Chemistry, Regional University of Blumenau, FURB, Itoupava Seca, 89030-903, Blumenau, SC, Brazil
| | - Martinho Rau
- Department of Chemistry, Regional University of Blumenau, FURB, Itoupava Seca, 89030-903, Blumenau, SC, Brazil
| | - Ricardo Andrade Rebelo
- Department of Chemistry, Regional University of Blumenau, FURB, Itoupava Seca, 89030-903, Blumenau, SC, Brazil
| | - Sarah Castro Dos Santos
- Department of Chemistry, Regional University of Blumenau, FURB, Itoupava Seca, 89030-903, Blumenau, SC, Brazil
| | - Luiz Everson da Silva
- Postgraduate Program in Sustainable Territorial Development, Coastal Sector, Federal University of Paraná, Matinhos, PR, Brazil
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Regional University of Cariri-URCA, 1161, Rua Cel. Antônio Luiz, Crato, Ceará, 63.105-000, Brazil
| | - Saulo Almeida Menezes
- Center of Biotechnology, Federal University of Rio Grande do Sul-UFRGS, 9500, Av. Bento Gonçalves, Porto Alegre, Rio Grande do Sul, 91501-970, Brazil
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Silva VBD, Almeida-Bezerra JW, Novais MHG, Farias NS, Coelho JJ, Ribeiro PRV, Canuto KM, Coutinho HDM, Morais-Braga MFB, Oliveira AFMD. Chemical composition, antifungal, and anti-virulence action of the stem bark of Hancornia speciosa Gomes (Apocynaceae) against Candida spp. JOURNAL OF ETHNOPHARMACOLOGY 2024; 321:117506. [PMID: 38012976 DOI: 10.1016/j.jep.2023.117506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 11/29/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hancornia speciosa Gomes is a fruit and medicinal species used for treating infectious diseases of the genitourinary system. However, its mechanism of action against microbes is still not fully understood. Infections in the genitourinary system caused by Candida spp. are associated with its fungal resistance and pathogenicity. New plant-derived compounds are an alternative to fight these Candida infections. AIM OF THE STUDY The objective of this study was to evaluate the anti-Candida effects of extracts of the stem bark of H. speciosa. This research investigated the chemical composition of sulfuric ether (EEHS) and methanolic (MEHS) extracts, their drug-modifying action on fluconazole, and their anti-virulence action on the morphological transition of Candida species. MATERIALS AND METHODS The extracts (EEHS and MEHS) of the stem bark of H. speciosa were chemically characterized via qualitative phytochemical screening and by liquid chromatography coupled with mass spectrometry (UPLC-MS-ESI-QTOF). The extracts were evaluated regarding their antifungal effects and fluconazole-modifying activity against Candida albicans, Candida krusei, and Candida tropicalis using the broth microdilution method. Additionally, the study evaluated the inhibition of fungal virulence in Candida species through morphological transition assays. RESULTS The phytochemical screening revealed the presence of anthocyanidins, anthocyanins, aurones, catechins, chalcones, flavones, flavonols, flavanones, leucoanthocyanidins, tannins (condensed and pyrogallic), and xanthones in both extracts of the stem bark of H. speciosa. The UPLC-MS-ESI-QTOF analysis identified the same compounds in both extracts, predominating phenolic compounds. Some compounds were first time recorded in this species: gluconic acid, cinchonain IIb, cinchonain Ib isomer, and lariciresinol hexoside isomers. Most of the intrinsic antifungal activity was observed for the MEHS against C. krusei (IC50: 58.41 μg/mL). At subinhibitory concentrations (MC/8), the EEHS enhanced the action of fluconazole against all Candida strains. The MEHS exhibited greater efficacy than fluconazole inhibiting C. krusei growth. The EEHS completely inhibited hyphae appearance and reduced pseudohyphae formation in C. albicans. CONCLUSION The stem bark of H. speciosa is a rich source of bioactive compounds, especially phenolic. Phenolic compounds can have important roles in fighting infectious diseases of the genitourinary system, such as candidiasis. The extracts of H. speciosa improved the action of the drug fluconazole against Candida species, inhibited hyphae appearance, and reduced pseudohyphae formation. The results of this study can support the development of new therapeutics against resistant strains of Candida.
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Affiliation(s)
- Viviane Bezerra da Silva
- Department of Botany, Universidade Federal de Pernambuco - UFPE, Rua Professor Moraes Rego, s/n, Recife, Pernambuco, 50.670-901, Brazil.
| | - José Weverton Almeida-Bezerra
- Department of Botany, Universidade Federal de Pernambuco - UFPE, Rua Professor Moraes Rego, s/n, Recife, Pernambuco, 50.670-901, Brazil
| | - Maria Hellena Garcia Novais
- Department of Biological Sciences, Universidade Regional do Cariri - URCA, Rua Cel. Antônio Luiz, 1161, Crato, Ceará, 63.105-000, Brazil
| | - Naiza Saraiva Farias
- Department of Biological Sciences, Universidade Regional do Cariri - URCA, Rua Cel. Antônio Luiz, 1161, Crato, Ceará, 63.105-000, Brazil
| | - Janerson José Coelho
- Animal Science Department, Universidade Estadual do Maranhão - UEMA, São Luís, Maranhão, Brazil
| | - Paulo Riceli Vasconcelos Ribeiro
- Multi-User Natural Products Chemistry Laboratory - LMQPN, Embrapa Agroindustria Tropical, Rua Dra. Sara Mesquita, 2270, Fortaleza, Ceará, 60511-110, Brazil
| | - Kirley Marques Canuto
- Multi-User Natural Products Chemistry Laboratory - LMQPN, Embrapa Agroindustria Tropical, Rua Dra. Sara Mesquita, 2270, Fortaleza, Ceará, 60511-110, Brazil
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Universidade Regional do Cariri - URCA, Rua Cel. Antônio Luiz, 1161, Crato, Ceará, 63.105-000, Brazil
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8
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Wen W, Xiang H, Qiu H, Chen J, Ye X, Wu L, Chen Z, Tong S. Screening and identification of antibacterial components in Artemisia argyi essential oil by TLC-direct bioautography combined with comprehensive 2D GC × GC-TOFMS. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1234:124026. [PMID: 38277723 DOI: 10.1016/j.jchromb.2024.124026] [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: 07/29/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 01/28/2024]
Abstract
One of the primary components that contribute to Artemisia argyi 's effectiveness is essential oil, which has an exceptional antibacterial effect that has been well documented. The actual cause of its antibacterial activity and associated mechanism, however, are still not completely understood. For the first time, comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (2D GC × GC-TOFMS) and thin-layer chromatography-direct bioautography (TLC-DB) were employed to investigate its antibacterial components. The antibacterial properties of A. argyi essential oil were investigated, and the antibacterial activity of six compounds was evaluated, using Staphylococcus aureus (S. aureus) and Escherichia coli (E. coil) as test microorganisms. TLC-direct bioautography was used to screen two bioactive clusters. Following 2D GC × GC-TOFMS identification of bioactive clusters, six compounds were evaluated for in vitro antibacterial activity verification. All the components tested displayed antibacterial action. Results showed that α-terpineol and eugenol had high potent antibacterial activity (MIC<0.62 mg/mL, IC50<2.00 mg/mL). For complex essential oils from traditional Chinese medicine, this method is efficient for quick screening and identifying antibacterial compounds.
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Affiliation(s)
- Weiyi Wen
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Haiping Xiang
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Huiyun Qiu
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Jianwei Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Xuemin Ye
- Research Center of Analysis and Measurement, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310014, China.
| | - Lin Wu
- Zhejiang ChroMass Technology Co., Ltd, 760 Binan Road, Hangzhou 310052, China
| | - Zhiqiang Chen
- Zhejiang ChroMass Technology Co., Ltd, 760 Binan Road, Hangzhou 310052, China.
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China.
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9
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de Araújo ACJ, Freitas PR, Araújo IM, Siqueira GM, de Oliveira Borges JA, Alves DS, Miranda GM, Dos Santos Nascimento IJ, de Araújo-Júnior JX, da Silva-Júnior EF, de Aquino TM, Junior FJBM, Marinho ES, Dos Santos HS, Tintino SR, Coutinho HDM. Potentiating-antibiotic activity and absorption, distribution, metabolism, excretion and toxicity properties (ADMET) analysis of synthetic thiadiazines against multi-drug resistant (MDR) strains. Fundam Clin Pharmacol 2024; 38:84-98. [PMID: 37649138 DOI: 10.1111/fcp.12950] [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: 06/24/2023] [Revised: 08/03/2023] [Accepted: 08/10/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Thiadiazines are heterocyclic compounds that contain two nitrogen atoms and one sulfur atom in their structure. These synthetic molecules have several relevant pharmacological activities, such as antifungal, antibacterial, and antiparasitic. OBJECTIVES The present study aimed to evaluate the possible in vitro and in silico interactions of compounds derived from thiadiazines. METHODS The compounds were initially synthesized, purified, and confirmed through HPLC methodology. Multi-drug resistant bacterial strains of Staphylococcus aureus 10 and Pseudomonas aeruginosa 24 were used to evaluate the direct and modifying antibiotic activity of thiadiazine derivatives. ADMET assays (absorption, distribution, metabolism, excretion, and toxicity) were conducted, which evaluated the influence of the compounds against thousands of macromolecules considered as bioactive targets. RESULTS There were modifications in the chemical synthesis in carbon 4 or 3 in one of the aromatic rings of the structure where different ions were added, ensuring a variability of products. It was possible to observe results that indicate the possibility of these compounds acting through the cyclooxygenase 2 mechanism, which, in addition to being involved in inflammatory responses, also acts by helping sodium reabsorption. The amine group present in thiadiazine analogs confers hydrophilic characteristics to the substances, but this primary characteristic has been altered due to alterations and insertions of other ligands. The characteristics of the analogs generally allow easy intestinal absorption, reduce possible hepatic toxic effects, and enable possible neurological and anti-inflammatory action. The antibacterial activity tests showed a slight direct action, mainly of the IJ23 analog. Some compounds were able to modify the action of the antibiotics gentamicin and norfloxacin against multi-drug resistant strains, indicating a possible synergistic action. CONCLUSIONS Among all the results obtained in the study, the relevance of thiadiazine analogs as possible coadjuvant drugs in the antibacterial, anti-inflammatory, and neurological action with low toxicity is clear. Need for further studies to verify these effects in living organisms is not ruled out.
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Affiliation(s)
| | - Priscilla Ramos Freitas
- Laboratory of Microbiology and Molecular Biology, LMBM, Universidade Regional do Cariri, Crato, Brazil
| | - Isaac Moura Araújo
- Laboratory of Microbiology and Molecular Biology, LMBM, Universidade Regional do Cariri, Crato, Brazil
| | - Gustavo Miguel Siqueira
- Laboratory of Microbiology and Molecular Biology, LMBM, Universidade Regional do Cariri, Crato, Brazil
| | | | - Daniel Sampaio Alves
- Laboratory of Microbiology and Molecular Biology, LMBM, Universidade Regional do Cariri, Crato, Brazil
| | | | - Igor José Dos Santos Nascimento
- Laboratory of Medicinal Chemistry, Institute of Pharmaceutical Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - João Xavier de Araújo-Júnior
- Laboratory of Medicinal Chemistry, Institute of Pharmaceutical Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Edeildo Ferreira da Silva-Júnior
- Biological and Molecular Chemistry Research Group, Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Thiago Mendonça de Aquino
- Laboratory of Synthesis and Research in Medicinal Chemistry, Research Group on Therapeutic Strategies - GPET, Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | | | - Emmanuel Silva Marinho
- Laboratory of Chemistry of Natural and Synthetic Product, State University of Ceará, UECE, Fortaleza, Ceará, Brazil
| | - Helcio Silva Dos Santos
- Laboratory of Chemistry of Natural and Synthetic Product, State University of Ceará, UECE, Fortaleza, Ceará, Brazil
| | - Saulo Relison Tintino
- Laboratory of Microbiology and Molecular Biology, LMBM, Universidade Regional do Cariri, Crato, Brazil
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10
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Mhlongo LC, Mseleku C, Tenza T, Fomum SW, McGaw LJ, Hassen A, Nsahlai IV. A Review of Ethnomedicinal Plants as Potential Anthelmintic Agents to Alternatively Control Gastrointestinal Nematodes of Ruminants in South Africa. J Parasitol Res 2024; 2024:7955692. [PMID: 38268708 PMCID: PMC10805549 DOI: 10.1155/2024/7955692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/29/2023] [Accepted: 12/30/2023] [Indexed: 01/26/2024] Open
Abstract
Small ruminant production is one of the most important animal productions for food security in the world, especially in the developing world. Gastrointestinal nematode (GIN) infection is a threat to this animal's production. Conventional drugs that are used to control these parasites are losing their efficacy due to the development of resistant parasites. These drugs are not biologically degradable, taint meat products and are also expensive for communal farmers. Hence, research is now exploring ethnomedicinal anthelmintic plants for an alternative remedy. The objective of this paper was to review ethnomedicinal plants as a potential alternative to unsustainable commercial anthelmintics. This review sought to understand common GINs infecting ruminants, resistance manifestation in GINs to conventional treatment, reasons communal farmers choose ethnomedicine, and modes of action in anthelmintic plants. It also examined the usage of plants and plant parts, dosage forms, methods for improving bioactivity, convectional validation procedures, and restrictions on ethnomedicinal plant use as anthelmintics in ethnomedicine. Such insight is essential, as it highlights the importance of ethnoveterinary medicine and ways to adopt or improve it as a potential alternative to conventional anthelmintics.
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Affiliation(s)
| | - Cresswell Mseleku
- Department of Animal and Poultry Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Thando Tenza
- Department of Animal and Poultry Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Sylvester Werekeh Fomum
- Department of Animal and Poultry Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Lyndy Joy McGaw
- Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa
| | - Abubeker Hassen
- Department of Animal and Wildlife Sciences, University of Pretoria, Hatfield, South Africa
| | - Ignatius Verla Nsahlai
- Department of Animal and Poultry Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
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11
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Lemos LMS, Ọlọ Ba-Whẹ Nù OA, Olasupo IA, Balogun SO, Macho A, Pavan E, de Oliveira Martins DT. Brasiliensic acid: in vitro cytotoxic and genotoxic, in vivo acute toxicity and in silico pharmacological prediction of a new promising molecule. J Biomol Struct Dyn 2023:1-14. [PMID: 38054294 DOI: 10.1080/07391102.2023.2280713] [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: 09/11/2023] [Accepted: 10/31/2023] [Indexed: 12/07/2023]
Abstract
Brasiliensic acid (Bras) is a chromanone isolated from Calophyllum brasiliense Cambèss. bark extracts with confirmed potential activity on gastric ulcer and Helicobacter pylori infection. This study aimed to investigate the in vitro and in vivo toxicity of Bras and molecular docking studies on its interactions with the H. pylori virulence factors and selected gastric cancer-related proteins. Cytotoxicity was evaluated by alamarBlue© assay, genotoxicity by micronucleus and comet assays, and on cell cycle by flow cytometry, using Chinese hamster epithelial ovary cells. Bras was not cytotoxic to CHO-K1 cells, and caused no chromosomal aberrations, nor altered DNA integrity. Furthermore, Bras inhibited damages to DNA by H2O2 at 1.16 µM. No cell cycle arrest was observed, but apoptosis accounted for 31.2% of the cell death observed in the CHO-K1 at 24 h incubation of the IC50. Oral acute toxicity by Hippocratic screening test in mice showed no relevant behavioral change/mortality seen up to 1,000 mg/kg. The molecular docking approach indicated potential interactions between Bras and the various targets for peptic ulcer and gastric cancer, notably CagA virulence factor of H. pylori and VEGFR-2. In conclusion, Bras is apparently safe and an optimization for Bras can be considered for gastric ulcer and cancer.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Larissa Maria Scalon Lemos
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, MT, Brazil
- Área de Farmacologia, Faculdade de Ciências da Saúde, Universidade do Estado de Mato Grosso (Unemat), Cáceres, MT, Brazil
| | | | | | - Sikiru Olaitan Balogun
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), Universidade Federal da Grande Dourados (UFGD), Dourados, MS, Brazil
| | - Antonio Macho
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, MT, Brazil
- Núcleo de Pesquisa em Morfologia e Imunologia Aplicada (NuPMIA). Pós-Graduação em Ciências Médicas, Faculdade de Medicina, Universidade de Brasília (UnB), Brasília, DF, Brazil
| | - Eduarda Pavan
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, MT, Brazil
| | - Domingos Tabajara de Oliveira Martins
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, MT, Brazil
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12
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Rodrigues Dos Santos Barbosa C, Macêdo NS, de Sousa Silveira Z, Rocha JE, Freitas TS, Muniz DF, Araújo IM, Datiane de Morais Oliveira-Tintino C, Marinho ES, Nunes da Rocha M, Marinho MM, Bezerra AH, Ribeiro de Sousa G, Barbosa-Filho JM, de Souza-Ferrari J, Melo Coutinho HD, Silva Dos Santos H, Bezerra da Cunha FA. Evaluation of the antibacterial and inhibitory activity of the MepA efflux pump of Staphylococcus aureus by riparins I, II, III, and IV. Arch Biochem Biophys 2023; 748:109782. [PMID: 37839789 DOI: 10.1016/j.abb.2023.109782] [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: 03/29/2023] [Revised: 09/26/2023] [Accepted: 10/03/2023] [Indexed: 10/17/2023]
Abstract
The efflux pump mechanism contributes to the antibiotic resistance of widely distributed strains of Staphylococcus aureus. Therefore, in the present work, the ability of the riparins N-(4-methoxyphenethyl)benzamide (I), 2-hydroxy-N-[2-(4-methoxyphenyl)ethyl]benzamide (II), 2, 6-dihydroxy-N-[ 2-(4-methoxyphenyl)ethyl]benzamide (III), and 3,4,5-trimethoxy-N-[2-(4-methoxyphenethyl)benzamide (IV) as potential inhibitors of the MepA efflux pump in S. aureus K2068 (fluoroquinolone-resistant). In addition, we performed checkerboard assays to obtain more information about the activity of riparins as potential inhibitors of MepA efflux and also analyzed the ability of riparins to act on the permeability of the bacterial membrane of S. aureus by the fluorescence method with SYTOX Green. A molecular coupling assay was performed to characterize the interaction between riparins and MepA, and ADMET (absorption, distribution, metabolism, and excretion) properties were analyzed. We observed that I-IV riparins did not show direct antibacterial activity against S. aureus. However, combination assays with substrates of MepA, ciprofloxacin, and ethidium bromide (EtBr) revealed a potentiation of the efficacy of these substrates by reducing the minimum inhibitory concentration (MIC). Furthermore, increased EtBr fluorescence emission was observed for all riparins. The checkerboard assay showed synergism between riparins I, II, and III, ciprofloxacin, and EtBr. Furthermore, riparins III and IV exhibited permeability in the S. aureus membrane at a concentration of 200 μg/mL. Molecular docking showed that riparins I, II, and III bound in a different region from the binding site of chlorpromazine (standard pump inhibitor), indicating a possible synergistic effect with the reference inhibitor. In contrast, riparin IV binds in the same region as the chlorpromazine binding site. From the in silico ADMET prediction based on MPO, it could be concluded that the molecules of riparin I-IV present their physicochemical properties within the ideal pharmacological spectrum allowing their preparation as an oral drug. Furthermore, the prediction of cytotoxicity in liver cell lines showed a low cytotoxic effect for riparins I-IV.
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Affiliation(s)
| | - Nair Silva Macêdo
- Biological Chemistry, Department of Biological Chemistry, Cariri Regional University (URCA), Crato, CE, Brazil.
| | - Zildene de Sousa Silveira
- Biological Chemistry, Department of Biological Chemistry, Cariri Regional University (URCA), Crato, CE, Brazil.
| | - Janaína Esmeraldo Rocha
- Biological Chemistry, Department of Biological Chemistry, Cariri Regional University (URCA), Crato, CE, Brazil.
| | - Thiago Sampaio Freitas
- Biological Chemistry, Department of Biological Chemistry, Cariri Regional University (URCA), Crato, CE, Brazil.
| | - Débora Feitosa Muniz
- Biological Chemistry, Department of Biological Chemistry, Cariri Regional University (URCA), Crato, CE, Brazil.
| | - Isaac Moura Araújo
- Biological Chemistry, Department of Biological Chemistry, Cariri Regional University (URCA), Crato, CE, Brazil.
| | | | - Emmanuel Silva Marinho
- State University of Ceará, Graduate Program in Natural Sciences, Laboratory of Natural Products Chemistry, Fortaleza, Ceará, Brazil.
| | - Matheus Nunes da Rocha
- State University of Ceará, Graduate Program in Natural Sciences, Laboratory of Natural Products Chemistry, Fortaleza, Ceará, Brazil.
| | - Marcia Machado Marinho
- Center of Exact Sciences and Technology, State University of Ceará, Fortaleza, CE, Brazil.
| | | | - Gabriela Ribeiro de Sousa
- Natural and Synthetic Bioactive Products, Federal University of Paraiba (UFPB), João Pessoa, PB, Brazil.
| | - José Maria Barbosa-Filho
- Natural and Synthetic Bioactive Products, Federal University of Paraiba (UFPB), João Pessoa, PB, Brazil.
| | | | | | - Hélcio Silva Dos Santos
- Rede Nordeste de Biotecnologia (RENORBIO-Nucleadora UECE), Universidade Estadual Vale do Acaraú (UVA), Sobral, CE, Brazil.
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13
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Borges HS, Gusmão LA, Tedesco AC. Multi-charged nanoemulsion for photodynamic treatment of glioblastoma cell line in 2D and 3D in vitro models. Photodiagnosis Photodyn Ther 2023; 43:103723. [PMID: 37487809 DOI: 10.1016/j.pdpdt.2023.103723] [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: 05/12/2023] [Revised: 07/05/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023]
Abstract
Multi-charged nanoemulsions (NE) were designed to deliver Cannabidiol (CBD), Indocyanine green (ICG), and Protoporphyrin (PpIX) to treat glioblastoma (GBM) through Photodynamic Therapy (PDT). The phase-inversion temperature (PIT) method resulted in a highly stable NE that can be scaled easily, with a six-month shelf-life. We observed the quasi-spherical morphology of the nanoemulsions without any unencapsulated material and that 89% (± 5.5%) of the material was encapsulated. All physicochemical properties were within the expected range for a nanostructured drug delivery system, making these multi-charged nanoemulsions promising for further research and development. NE-PIC (NE-Protoporphyrin + Indocyanine + CBD) was easily internalized on GBM cells after three hours of incubation. Nanoemulsion (NE and NE-PIC) did not result in significant cytotoxicity, even for GBM or non-tumorigenic cell lines (NHF). Phototoxicity was significantly higher for the U87MG cell than the T98G cell when exposed to: visible (430 nm) and infrared (810 nm) laser light, with a difference of about 20%. From 50 mJ.cm-2, the viability of GBM cell lines decreases significantly, ranging from 65% to 85%. The NE-PIC was also effective for inhibiting cell proliferation into a 3D spheroidal GBM cell model, which is promising for mimicking the tumor cell environment. Irradiation at 810 nm was more effective in treating spheroid due to its deeper penetration in complex structures. NE-PIC has the potential as a drug delivery system for photoinactivation and photo diagnostic of GBM cell lines, taking advantage of the versatility of its active components.
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Affiliation(s)
- Hiago Salge Borges
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering ‒ Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, 14040-901, Ribeirão Preto-SP, Brazil
| | - Luiza Araújo Gusmão
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering ‒ Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, 14040-901, Ribeirão Preto-SP, Brazil
| | - Antonio Claudio Tedesco
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering ‒ Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, 14040-901, Ribeirão Preto-SP, Brazil.
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14
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Almeida-Bezerra JW, Pereira da Cruz R, Silva Pereira RL, Bezerra da Silva V, de Oliveira Bezerra de Sousa D, Da Silva Neto JX, Lopes de Souza LA, Salgueiro Araújo NM, Gomes Silva RG, Lucetti DL, Melo Coutinho HD, Bezerra Morais-Braga MF, Morais de Oliveira AF. Caryocar coriaceum fruits as a potential alternative to combat fungal and bacterial infections: In vitro evaluation of methanolic extracts. Microb Pathog 2023; 181:106203. [PMID: 37330178 DOI: 10.1016/j.micpath.2023.106203] [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: 05/19/2023] [Revised: 06/10/2023] [Accepted: 06/14/2023] [Indexed: 06/19/2023]
Abstract
Caryocar coriaceum, commonly known as 'pequi', is a medicinal species used traditionally for the herbal treatment of infectious and parasitic diseases in the Brazilian Northeast region. In this study, we investigated whether the fruits of C. coriaceum have bioactive chemical constituents against etiological agents of infectious diseases. The methanolic extract of the internal mesocarp of the fruits of C. coriaceum (MECC) was chemically analyzed and evaluated for its antimicrobial and drug-enhancing activity against multidrug-resistant pathogenic bacteria (Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus), and Candida spp. strains. The extract had flavones, flavonols, xanthones, catechins, and flavanones as major classes. A total of 11.26 mg GAE/g of phenolics, and 5.98 mg QE/g of flavonoids were found. No intrinsic antibacterial activity was observed; however, the extract was able to intensify the action of gentamicin and erythromycin against multi-resistant strains. The anti-Candida effect observed in this study was mainly due to the formation of reactive oxygen species. The extract was capable of causing damage to the plasmatic membrane of Candida tropicalis through pores formation. Our findings partially support the ethnopharmacological uses of the fruit pulp of C. coriaceum against infectious and parasitic diseases.
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Affiliation(s)
- José Weverton Almeida-Bezerra
- Department of Botany, Federal University of Pernambuco - UFPE, s/n, Rua Professor Moraes Rego, Recife, Pernambuco, 50.670-901, Brazil
| | - Rafael Pereira da Cruz
- Department of Biological Sciences, Regional University of Cariri - URCA, 1161, Rua Cel. Antônio Luiz, Crato, Ceará, 63.105-000, Brazil
| | - Raimundo Luiz Silva Pereira
- Department of Biological Chemistry, Regional University of Cariri - URCA, 1161, Rua Cel. Antônio Luiz, Crato, Ceará, 63.105-000, Brazil
| | - Viviane Bezerra da Silva
- Department of Botany, Federal University of Pernambuco - UFPE, s/n, Rua Professor Moraes Rego, Recife, Pernambuco, 50.670-901, Brazil
| | | | - João Xavier Da Silva Neto
- Department of Biochemistry and Molecular Biology, Federal University of Ceará - UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | - Larissa Alves Lopes de Souza
- Department of Biochemistry and Molecular Biology, Federal University of Ceará - UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | - Nadine Monteiro Salgueiro Araújo
- Department of Biochemistry and Molecular Biology, Federal University of Ceará - UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | - Rafael Guimarães Gomes Silva
- Department of Biochemistry and Molecular Biology, Federal University of Ceará - UFC, s/n, Av. Humberto Monte, Fortaleza, 60.451-970, Brazil
| | - Daniel Luna Lucetti
- CECAPE College. Av. Padre Cícero, 3917, São José, Juazeiro do Norte - CE, 63024-015, Brazil
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Regional University of Cariri - URCA, 1161, Rua Cel. Antônio Luiz, Crato, Ceará, 63.105-000, Brazil.
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15
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Richard-Bollans A, Aitken C, Antonelli A, Bitencourt C, Goyder D, Lucas E, Ondo I, Pérez-Escobar OA, Pironon S, Richardson JE, Russell D, Silvestro D, Wright CW, Howes MJR. Machine learning enhances prediction of plants as potential sources of antimalarials. FRONTIERS IN PLANT SCIENCE 2023; 14:1173328. [PMID: 37304721 PMCID: PMC10248027 DOI: 10.3389/fpls.2023.1173328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/20/2023] [Indexed: 06/13/2023]
Abstract
Plants are a rich source of bioactive compounds and a number of plant-derived antiplasmodial compounds have been developed into pharmaceutical drugs for the prevention and treatment of malaria, a major public health challenge. However, identifying plants with antiplasmodial potential can be time-consuming and costly. One approach for selecting plants to investigate is based on ethnobotanical knowledge which, though having provided some major successes, is restricted to a relatively small group of plant species. Machine learning, incorporating ethnobotanical and plant trait data, provides a promising approach to improve the identification of antiplasmodial plants and accelerate the search for new plant-derived antiplasmodial compounds. In this paper we present a novel dataset on antiplasmodial activity for three flowering plant families - Apocynaceae, Loganiaceae and Rubiaceae (together comprising c. 21,100 species) - and demonstrate the ability of machine learning algorithms to predict the antiplasmodial potential of plant species. We evaluate the predictive capability of a variety of algorithms - Support Vector Machines, Logistic Regression, Gradient Boosted Trees and Bayesian Neural Networks - and compare these to two ethnobotanical selection approaches - based on usage as an antimalarial and general usage as a medicine. We evaluate the approaches using the given data and when the given samples are reweighted to correct for sampling biases. In both evaluation settings each of the machine learning models have a higher precision than the ethnobotanical approaches. In the bias-corrected scenario, the Support Vector classifier performs best - attaining a mean precision of 0.67 compared to the best performing ethnobotanical approach with a mean precision of 0.46. We also use the bias correction method and the Support Vector classifier to estimate the potential of plants to provide novel antiplasmodial compounds. We estimate that 7677 species in Apocynaceae, Loganiaceae and Rubiaceae warrant further investigation and that at least 1300 active antiplasmodial species are highly unlikely to be investigated by conventional approaches. While traditional and Indigenous knowledge remains vital to our understanding of people-plant relationships and an invaluable source of information, these results indicate a vast and relatively untapped source in the search for new plant-derived antiplasmodial compounds.
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Affiliation(s)
| | - Conal Aitken
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, United Kingdom
| | - Alexandre Antonelli
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Oxford, Oxford, United Kingdom
| | | | - David Goyder
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Eve Lucas
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Ian Ondo
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | | | - Samuel Pironon
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC), Cambridge, United Kingdom
| | - James E. Richardson
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Tropical Diversity Section, Royal Botanic Garden, Edinburgh, United Kingdom
- Departamento de Biología, Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
- Environmental Research Institute, University College Cork, Cork, Ireland
| | - David Russell
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Daniele Silvestro
- Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Swiss Institute of Bioinformatics, Fribourg, Switzerland
| | - Colin W. Wright
- School of Pharmacy and Medical Sciences, University of Bradford, Bradford, United Kingdom
| | - Melanie-Jayne R. Howes
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, London, United Kingdom
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16
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Costa da Silva MM, Bezerra de Araújo Neto J, Lucas dos Santos AT, de Morais Oliveira-Tintino CD, de Araújo ACJ, Freitas PR, da Silva LE, do Amaral W, Deschamps C, de Azevedo FR, Gonçalves Lima CM, Golubkina N, Calixto-Júnior JT, Ribeiro-Filho J, Coutinho HDM, Caruso G, Tintino SR. Antibiotic-Potentiating Activity of the Schinus terebinthifolius Raddi Essential Oil against MDR Bacterial Strains. PLANTS (BASEL, SWITZERLAND) 2023; 12:1587. [PMID: 37111810 PMCID: PMC10144370 DOI: 10.3390/plants12081587] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/29/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus are the primary bacteria that cause clinical infections, such as urinary and intestinal infections, pneumonia, endocarditis, and sepsis. Bacterial resistance is an innate natural occurrence in microorganisms, resulting from mutations or the lateral exchange of genetic material. This serves as evidence for the association between drug consumption and pathogen resistance. Evidence has demonstrated that the association between conventional antibiotics and natural products is a promising pharmacological strategy to overcome resistance mechanisms. Considering the large body of research demonstrating the significant antimicrobial activities of Schinus terebinthifolius Raddi, the present study aimed to evaluate the chemical composition and antibiotic-enhancing effects of Schinus terebinthifolius Raddi essential oil (STEO) against the standard and multidrug-resistant strains of Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus. The STEO was extracted by hydrodistillation using a Clevenger-type vacuum rotary evaporator. The Minimum Inhibitory Concentration (MIC) of the STEO was assessed by the microdilution method to evaluate the antibacterial activity. The antibiotic-enhancing activity of the essential oil was assessed by determining the MIC of antibiotics in the presence of a sub-inhibitory concentration (MIC/8) of the natural product. The GC-MS analysis revealed alpha-pinene (24.3%), gamma-muurolene (16.6%), and myrcene (13.7%) as major constituents of the STEO. The STEO potentiated the enhanced antibacterial activity of norfloxacin and gentamicin against all the strains and increased the action of penicillin against the Gram-negative strains. Therefore, it is concluded that although the STEO does not exhibit clinically effective antibacterial activity, its association with conventional antibiotics results in enhanced antibiotic activity.
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Affiliation(s)
- Maria Milene Costa da Silva
- Department of Biological Sciences, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
| | - José Bezerra de Araújo Neto
- Department of Biological Sciences, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
| | - Antonia Thassya Lucas dos Santos
- Department of Biological Sciences, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
| | | | - Ana Carolina Justino de Araújo
- Department of Biological Chemistry, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
| | - Priscilla Ramos Freitas
- Department of Biological Chemistry, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
| | - Luiz Everson da Silva
- Postgraduate Program in Sustainable Territorial Development, Coastal Sector, Federal University of Paraná, Curitiba 80060-000, PR, Brazil
| | - Wanderlei do Amaral
- Postgraduate Program in Sustainable Territorial Development, Coastal Sector, Federal University of Paraná, Curitiba 80060-000, PR, Brazil
| | - Cícero Deschamps
- Postgraduate Program in Sustainable Territorial Development, Coastal Sector, Federal University of Paraná, Curitiba 80060-000, PR, Brazil
| | | | | | - Nadezhda Golubkina
- Federal Scientific Center of Vegetable Production, Selectsionnaya 14, VNIISSOK, Odintsovo District, 143072 Moscow, Russia
| | - João Tavares Calixto-Júnior
- Department of Biological Sciences, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
| | - Jaime Ribeiro-Filho
- Oswaldo Cruz Foundation (Fiocruz), Fiocruz Ceará, Eusébio 61773-270, CE, Brazil
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
| | - Gianluca Caruso
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Naples, Italy
| | - Saulo Relison Tintino
- Department of Biological Sciences, Regional University of Cariri—URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato 63105-000, CE, Brazil
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Gomes do Nascimento L, Castro de Morais M, Klidenberg de Oliveira Júnior J, de Oliveira Lima E, de Sousa DP. Synthetic 2-Nitrocinnamates: Investigation of the Antifungal Action against Candida Species. J CHEM-NY 2023. [DOI: 10.1155/2023/8525145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Derivatives of cinnamic acid have several pharmacological actions, such as antimicrobial activity. Therefore, in the present study, a series of fourteen alkyl and aryl derivatives from (E)-2-nitrocinnamic acid were obtained using Fischer esterification, nucleophilic substitution with halides, and Mitsunobu reaction. Esters were evaluated for antifungal activity against several strains of Candida spp. using nystatin as a positive control. Among the synthetic derivatives obtained, nine are compounds unprecedented in the literature. The characterization of chemical structures was carried out using the techniques of IR, 1H-NMR and 13C-NMR spectroscopy, and high-resolution mass spectrometry. Isopropyl 2-nitrocinnamate (4) was the compound that showed the best antifungal activity (MIC = 513.52 μM) against all fungal strains, followed by compound perillyl 2-nitrocinnamate (14) with MIC = 390.99–781.98 μM.
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Affiliation(s)
- Lázaro Gomes do Nascimento
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
| | - Mayara Castro de Morais
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
| | | | | | - Damião Pergentino de Sousa
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Federal University of Paraíba, João Pessoa 58051-900, PB, Brazil
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Bioactive Compounds from Kalanchoe Genus Potentially Useful for the Development of New Drugs. Life (Basel) 2023; 13:life13030646. [PMID: 36983802 PMCID: PMC10058616 DOI: 10.3390/life13030646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023] Open
Abstract
The genus Kalanchoe Adans. (Crassulaceae) is native to Madagascar and comprises 145 species, being naturalized in the tropics and cultivated worldwide. In addition to having ornamental value, several Kalanchoe species are commonly used in popular medicine for the treatment of inflammatory conditions, wounds, gastric ulcers, and other diseases. The great importance of the genus is reflected on its acknowledgment by traditional and alternative health systems and organizations, as well as on the growing number of papers reporting pharmacological properties of extracts and isolated compounds from Kalanchoe. Among these properties, we highlight anti-inflammatory, antitumor, wound healing, antiulcer, and muscle relaxing properties. These activities are attributed mostly to flavonoids and bufadienolides, the main secondary metabolites reported in Kalanchoe extracts. While bufadienolides are generally related to cytotoxic and muscle relaxing activities, flavonoids are commonly reported as anti-inflammatory and wound healing agents. This review provides up to date information and perspectives on bioactive compounds from the Kalanchoe genus that are potentially useful for the development of new drugs. It includes not only a discussion on the advantages of the Kalanchoe species as source of bioactive compounds, but also the gaps, opportunities, and challenges to translate the acquired knowledge into innovation for drug development.
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de-Andrade SD, Andrade IMG, Castro A, Montenegro YMR, das-Neves-Moreira D, Maia RA, Martins FT, Vaz BG, Franco-dos-Santos G, Lima EDO, Oliveira NDR, Farias BKDS, Lima-Junior CG. Deep eutectic solvent co-catalyzed synthesis and antimicrobial activity of Morita-Baylis-Hillman adducts from isatin derivatives. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Leão PVS, Ferreira ALDS, Oliveira FADA, Mesquita ABDS, Lima-Net JDS, Gutierrez SJC, Nogueira CES, Cruz-Martins N, Arcanjo DDR, Barreto HM, Lima Ferreira JH. Riparin-B as a Potential Inhibitor of AdeABC Efflux System from Acinetobacter baumannii. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2023; 2023:1780838. [PMID: 37089710 PMCID: PMC10118900 DOI: 10.1155/2023/1780838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 01/07/2023] [Accepted: 02/02/2023] [Indexed: 04/25/2023]
Abstract
Acinetobacter baumannii is an important opportunistic pathogen that causes serious health-related infections, especially in intensive care units. The present study aimed to investigate the antimicrobial activity of Riparin-B (Rip-B) alone and in association with norfloxacin against multidrug-resistant clinical isolates of A. baumannii. For this, the minimum inhibitory concentrations were determined by the microdilution method. For the evaluation of resistance-modulating activity, MIC values for antibiotics were determined in the presence or absence of subinhibitory concentrations of Rip-B or chlorpromazine (CPZ). The AdeABC-AdeRS efflux system genes from these isolates were detected by PCR. Docking studies were also carried out to evaluate the interaction of Riparin-B and the AdeABC-AdeRS efflux system. The study was conducted from 2017 to 2019. The results showed that Rip-B showed weak intrinsic activity against the strains tested. On the other hand, Rip-B was able to modulate norfloxacin's response against A. baumannii strains that express efflux pump-mediated resistance. Docking studies provided projections of the interaction between Rip-B and EtBr with the AdeB protein, suggesting that Rip-B acts by competitive inhibition with the drug. Results found by in vitro and in silico assays suggest that Rip-B, in combination with norfloxacin, has the potential to treat infections caused by multidrug-resistant A. baumanni with efflux pump resistance.
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Affiliation(s)
- Patrícia Virna Sales Leão
- Laboratory of Research in Microbiology, Department of Parasitology and Microbiology, Federal University of Piaui, Teresina, Piauí, Brazil
| | - Ana Laura da Silva Ferreira
- Laboratory of Research in Microbiology, Department of Parasitology and Microbiology, Federal University of Piaui, Teresina, Piauí, Brazil
| | | | - Avilnete Belém de Souza Mesquita
- Laboratory of Research in Microbiology, Department of Parasitology and Microbiology, Federal University of Piaui, Teresina, Piauí, Brazil
| | | | | | | | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto 4200-319, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto 4200-135, Portugal
| | - Daniel Dias Rufino Arcanjo
- Laboratory of Functional and Molecular Studies on Physiopharmacology (LAFMOL), Department of Biophysics and Physiology, Federal University of Piaui, Teresina, Piauí, Brazil
| | - Humberto Medeiros Barreto
- Laboratory of Research in Microbiology, Department of Parasitology and Microbiology, Federal University of Piaui, Teresina, Piauí, Brazil
| | - Josie Haydée Lima Ferreira
- Laboratory of Research in Microbiology, Department of Parasitology and Microbiology, Federal University of Piaui, Teresina, Piauí, Brazil
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Evaluation of antibacterial and toxicological activities of essential oil of Ocimum gratissimum L. and its major constituent eugenol. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Pinheiro PG, Santiago GMP, da Silva FEF, de Araújo ACJ, de Oliveira CRT, Freitas PR, Rocha JE, Neto JBDA, da Silva MMC, Tintino SR, Siyadatpanah A, Norouzi R, Dashti S, Wilairatana P, Coutinho HDM, da Costa JGM. Ferulic acid derivatives inhibiting Staphylococcus aureus tetK and MsrA efflux pumps. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2022; 34:e00717. [PMID: 35284249 PMCID: PMC8914127 DOI: 10.1016/j.btre.2022.e00717] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 02/14/2022] [Accepted: 02/28/2022] [Indexed: 02/02/2023]
Abstract
Background Bacterial resistance to multiple drugs has recently emerged as a serious health problem. Concomitantly, the characterization of new substances with potential antimicrobial activity has been less frequent in the drug development industry. The overexpression of genes encoding efflux pumps that expel antimicrobial drugs from the intracellular environment, lowering these to subinhibitory concentrations, are among the resistance mechanisms predisposing microorganisms to high drug resistance. Staphylococcus aureus is a bacterium found in the normal microbiota of the skin and mucous membranes, and is an opportunistic microorganism capable of causing infections with high rates of morbidity and mortality. TetK is an efflux pump characterized by its ability to provide bacterial resistance to antibiotics from the tetracycline class. This study aimed to evaluate the inhibitory effect of ferulic acid and four of its esterified derivatives against resistant Staphylococcus aureus strains. Method Ferulic acid derivatives were obtained by esterification and then characterized by hydrogen and carbon-13 nuclear magnetic resonance analysis. The minimum inhibitory concentrations (MIC) of ferulic acid and its esterified derivatives, ethidium bromide, and antibiotics were obtained using the microdilution test, while the efflux pump inhibition test was conducted by examining reduction in the MICs. Results Propylferulate was seen to reduce the minimum inhibitory concentration (MIC) of both the control substance ethidium bromide and the tested antibiotic, indicating that this compound is promising for the use of efflux pump inhibition of IS-58 strains. Conclusions This study provides strong evidence that the molecular basis for this activity is potentially due to the MsrA and TetK efflux pumps. However, further investigations are necessary to prove this hypothesis and elucidate the potentiating mechanism of the modulatory effect.
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Affiliation(s)
- Patrícia Gonçalves Pinheiro
- Departamento de Química Biológica, Programa de Pos-Graduação em Química Biológica, Universidade Regional do Cariri
| | | | | | | | | | - Priscilla Ramos Freitas
- Departamento de Química Biológica, Programa de Pos-Graduação em Química Biológica, Universidade Regional do Cariri
| | - Janaína Esmeraldo Rocha
- Departamento de Química Biológica, Programa de Pos-Graduação em Química Biológica, Universidade Regional do Cariri
| | - José Bezerra de Araújo Neto
- Departamento de Química Biológica, Programa de Pos-Graduação em Química Biológica, Universidade Regional do Cariri
| | - Maria Milene Costa da Silva
- Departamento de Química Biológica, Programa de Pos-Graduação em Química Biológica, Universidade Regional do Cariri
| | - Saulo Relison Tintino
- Departamento de Química Biológica, Programa de Pos-Graduação em Química Biológica, Universidade Regional do Cariri
| | - Abolghasem Siyadatpanah
- Ferdows School of Paramedical and Health, Birjand University of Medical Sciences, Birjand, Iran
| | - Roghayeh Norouzi
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Saeid Dashti
- Ferdows School of Paramedical and Health, Birjand University of Medical Sciences, Birjand, Iran
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
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Potentiation of the Activity of Antibiotics against ATCC and MDR Bacterial Strains with (+)-α-Pinene and (-)-Borneol. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8217380. [PMID: 35663042 PMCID: PMC9159878 DOI: 10.1155/2022/8217380] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/15/2022] [Accepted: 05/07/2022] [Indexed: 12/11/2022]
Abstract
The increasing rates of antimicrobial resistance have demanded the development of new drugs as conventional antibiotics have become significantly less effective. Evidence has identified a variety of phytocompounds with the potential to be used in the combat of infections caused by multidrug-resistant (MDR) bacteria. Considering the verification that terpenes are promising antibacterial compounds, the present research aimed to evaluate the antibacterial and antibiotic-modulating activity of (+)-α-pinene and (-)-borneol against MDR bacterial strains. The broth microdilution method was used to determine the minimum inhibitory concentration (MIC) of the compounds and antibiotics and further evaluate the intrinsic and associated antibiotic activity. These analyses revealed that (+)-α-pinene showed significant antibacterial activity only against E. coli (MIC = 512 μg.mL−1), while no significant inhibition of S. aureus and P. aeruginosa growth was observed (MIC ≥ 1024 μg mL−1). However, when combined with antibiotics, this compound induced a significant improvement in the activity of conventional antibiotics, as observed for ciprofloxacin, amikacin, and gentamicin against Staphylococcus aureus, as well as for amikacin and gentamicin against Escherichia coli, and amikacin against Pseudomonas aeruginosa. On the other hand, (-)-borneol was found to inhibit the growth of E. coli and enhance the antibiotic activity of ciprofloxacin and gentamicin against S. aureus. The present findings indicate that (+)-α-pinene and (-)-borneol are phytocompounds with the potential to be used in the combat of antibacterial resistance.
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Lectins ConA and ConM extracted from Canavalia ensiformis (L.) DC and Canavalia rosea (Sw.) DC inhibit planktonic Candida albicans and Candida tropicalis. Arch Microbiol 2022; 204:346. [PMID: 35608680 PMCID: PMC9127036 DOI: 10.1007/s00203-022-02959-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 04/28/2022] [Accepted: 05/04/2022] [Indexed: 12/19/2022]
Abstract
Lectins participate in the defense against microorganisms and in signaling the damage caused by pathogens to the cell surface and/or intracellular in plants. This study aims to analyze the antifungal potential of lectins extracted from seeds of Canavalia ensiformis (L.) DC and Canavalia rosea (Sw.) DC, against Candida albicans and Candida tropicalis. The antimicrobial tests were performed by microdilution against Candida spp. The test to verify the combined lectin/fluconazole effect was performed using subinhibitory concentrations of lectins and with antifungal ranging from 0.5 to 512 µg/mL. The ability to inhibit the morphological transition of Candida spp. was evaluated by microcultivation in a moist chamber. The results of the minimum inhibitory concentration revealed no antifungal activity against the tested strains. However, lectins modified the action of fluconazole, reducing the IC50 of the drug against C. albicans. Lectins were also able to discretely modulate the morphological transition of the tested strains.
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25
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Houël E, Ginouves M, Azas N, Bourreau E, Eparvier V, Hutter S, Knittel-Obrecht A, Jahn-Oyac A, Prévot G, Villa P, Vonthron-Sénécheau C, Odonne G. Treating leishmaniasis in Amazonia, part 2: Multi-target evaluation of widely used plants to understand medicinal practices. JOURNAL OF ETHNOPHARMACOLOGY 2022; 289:115054. [PMID: 35131338 DOI: 10.1016/j.jep.2022.115054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/18/2022] [Accepted: 01/26/2022] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Leishmaniasis are widely distributed among tropical and subtropical countries, and remains a crucial health issue in Amazonia. Indigenous groups across Amazonia have developed abundant knowledge about medicinal plants related to this pathology. AIM OF THE STUDY We intent to explore the weight of different pharmacological activities driving taxa selection for medicinal use in Amazonian communities. Our hypothesis is that specific activity against Leishmania parasites is only one factor along other (anti-inflammatory, wound healing, immunomodulating, antimicrobial) activities. MATERIALS AND METHODS The twelve most widespread plant species used against leishmaniasis in Amazonia, according to their cultural and biogeographical importance determined through a wide bibliographical survey (475 use reports), were selected for this study. Plant extracts were prepared to mimic their traditional preparations. Antiparasitic activity was evaluated against promastigotes of reference and clinical New-World strains of Leishmania (L. guyanensis, L. braziliensis and L. amazonensis) and L. amazonensis intracellular amastigotes. We concurrently assessed the extracts immunomodulatory properties on PHA-stimulated human PBMCs and RAW264.7 cells, and on L. guyanensis antigens-stimulated PBMCs obtained from Leishmania-infected patients, as well as antifungal activity and wound healing properties (human keratinocyte migration assay) of the selected extracts. The cytotoxicity of the extracts against various cell lines (HFF1, THP-1, HepG2, PBMCs, RAW264.7 and HaCaT cells) was also considered. The biological activity pattern of the extracts was represented through PCA analysis, and a correlation matrix was calculated. RESULTS Spondias mombin L. bark and Anacardium occidentale L. stem and leaves extracts displayed high anti-promatigotes activity, with IC50 ≤ 32 μg/mL against L. guyanensis promastigotes for S. mombin and IC50 of 67 and 47 μg/mL against L. braziliensis and L. guyanensis promastigotes, respectively, for A. occidentale. In addition to the antiparasitic effect, antifungal activity measured against C. albicans and T. rubrum (MIC in the 16-64 μg/mL range) was observed. However, in the case of Leishmania amastigotes, the most active species were Bixa orellana L. (seeds), Chelonantus alatus (Aubl.) Pulle (leaves), Jacaranda copaia (Aubl.) D. Don. (leaves) and Plantago major L. (leaves) with IC50 < 20 μg/mL and infection rates of 14-25% compared to the control. Concerning immunomodulatory activity, P. major and B. orellana were highlighted as the most potent species for the wider range of cytokines in all tested conditions despite overall contrasting results depending on the model. Most of the species led to moderate to low cytotoxic extracts except for C. alatus, which exhibited strong cytotoxic activity in almost all models. None of the tested extracts displayed wound healing properties. CONCLUSIONS We highlighted pharmacologically active extracts either on the parasite or on associated pathophysiological aspects, thus supporting the hypothesis that antiparasitic activities are not the only biological factor useful for antileishmanial evaluation. This result should however be supplemented by in vivo studies, and attracts once again the attention on the importance of the choice of biological models for an ethnophamacologically consistent study. Moreover, plant cultural importance, ecological status and availability were discussed in relation with biological results, thus contributing to link ethnobotany, medical anthropology and biology.
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Affiliation(s)
- Emeline Houël
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRAE, Université des Antilles, Université de Guyane, 97300, Cayenne, France.
| | - Marine Ginouves
- TBIP, Université de Guyane, 97300, Cayenne, French Guiana; Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL Center for Infection and Immunity of Lille, 59000, Lille, France
| | - Nadine Azas
- Aix Marseille Univ, IHU Méditerranée Infection, UMR VITROME, Tropical Eukaryotic Pathogens, 19-21 Boulevard Jean Moulin, 13005, Marseille, France
| | - Eliane Bourreau
- Institut Pasteur de la Guyane, 23 Avenue Pasteur, BP6010, 97306, Cayenne Cedex, French Guiana
| | - Véronique Eparvier
- CNRS - Institut de Chimie des Substances Naturelles, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette Cedex, France
| | - Sébastien Hutter
- Aix Marseille Univ, IHU Méditerranée Infection, UMR VITROME, Tropical Eukaryotic Pathogens, 19-21 Boulevard Jean Moulin, 13005, Marseille, France
| | - Adeline Knittel-Obrecht
- Plate-forme de Chimie Biologique Intégrative de Strasbourg UAR 3286 CNRS-Université de Strasbourg, Institut du Médicament de Strasbourg, ESBS Pôle API, Bld Sébastien Brant, 67412, Illkirch Cedex, France
| | - Arnaud Jahn-Oyac
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRAE, Université des Antilles, Université de Guyane, 97300, Cayenne, France
| | - Ghislaine Prévot
- TBIP, Université de Guyane, 97300, Cayenne, French Guiana; Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL Center for Infection and Immunity of Lille, 59000, Lille, France
| | - Pascal Villa
- Plate-forme de Chimie Biologique Intégrative de Strasbourg UAR 3286 CNRS-Université de Strasbourg, Institut du Médicament de Strasbourg, ESBS Pôle API, Bld Sébastien Brant, 67412, Illkirch Cedex, France
| | - Catherine Vonthron-Sénécheau
- Laboratoire d'Innovation Thérapeutique UMR 7200 CNRS - Université de Strasbourg, Institut du Médicament de Strasbourg, Faculté de Pharmacie, 74 route du Rhin, 67401, Illkirch cedex, France
| | - Guillaume Odonne
- Laboratoire Ecologie, évolution, interactions des systèmes amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, 97300, Cayenne, French Guiana
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Habibi P, Shi Y, Fatima Grossi-de-Sa M, Khan I. Plants as Sources of Natural and Recombinant Antimalaria Agents. Mol Biotechnol 2022; 64:1177-1197. [PMID: 35488142 PMCID: PMC9053566 DOI: 10.1007/s12033-022-00499-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 04/08/2022] [Indexed: 11/30/2022]
Abstract
Malaria is one of the severe infectious diseases that has victimized about half a civilization billion people each year worldwide. The application of long-lasting insecticides is the main strategy to control malaria; however, a surge in antimalarial drug development is also taking a leading role to break off the infections. Although, recurring drug resistance can compromise the efficiency of both conventional and novel antimalarial medicines. The eradication of malaria is significantly contingent on discovering novel potent agents that are low cost and easy to administer. In this context, plant metabolites inhibit malaria infection progression and might potentially be utilized as an alternative treatment for malaria, such as artemisinin. Advances in genetic engineering technology, especially the advent of molecular farming, have made plants more versatile in producing protein drugs (PDs) to treat infectious diseases, including malaria. These recent developments in genetic modifications have enabled the production of native pharmaceutically active compounds and the accumulation of diverse heterologous proteins such as human antibodies, booster vaccines, and many PDs to treat infectious diseases and genetic disorders. This review will discuss the pivotal role of a plant-based production system that expresses natural antimalarial agents or host protein drugs to cure malaria infections. The potential of these natural and induced compounds will support modern healthcare systems in treating malaria infections, especially in developing countries to mitigate human fatalities.
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Affiliation(s)
- Peyman Habibi
- Department of Pathology and Laboratory Medicine and Center for Cellular Immunotherapies, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Yao Shi
- Department of Basic and Applied Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Maria Fatima Grossi-de-Sa
- Embrapa Genetic Resources and Biotechnology, Brasília-DF, Brazil
- Catholic University of Brasília, Brasília-DF, Brazil
- National Institute of Science and Technology, INCT Plant Stress Biotech, Embrapa, Brazil
| | - Imran Khan
- Department of Chemical Engineering, University of California, Davis, CA, USA.
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Olawuwo OS, Famuyide IM, McGaw LJ. Antibacterial and Antibiofilm Activity of Selected Medicinal Plant Leaf Extracts Against Pathogens Implicated in Poultry Diseases. Front Vet Sci 2022; 9:820304. [PMID: 35310417 PMCID: PMC8926311 DOI: 10.3389/fvets.2022.820304] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 02/04/2022] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial resistant poultry pathogens are responsible for treatment failure and economic losses, and can also be a source of resistant zoonotic infections representing a risk to human health. In 2006 the European Union banned the use of antibiotics as growth promoters in farm animals and other regions are likely to follow suit. Alternative products and strategies are sought to help maintain animal gut health to reduce the prevalence of pathogens in the food chain. The minimum inhibitory concentration (MIC) of organic and aqueous leaf extracts of Alchornea laxiflora, Ficus exasperata, Morinda lucida, Jatropha gossypiifolia, Ocimum gratissimum, and Acalypha wilkesiana were tested against bacterial poultry pathogens including Staphylococcus aureus, Enterococcus faecalis, Salmonella spp., Escherichia coli, Campylobacter spp., and fungal species (Aspergillus fumigatus, Aspergillus flavus, and Candida albicans) using a 2-fold serial microdilution method. Activity of extracts against biofilms of the pathogens was done using a modified crystal violet staining in vitro assay. The safety of extracts was determined against Vero and Caco-2 cells using a tetrazolium-based in vitro assay. Acetone and cold water extracts of M. lucida had the best activity against three bacteria (MIC = 0.05-0.07 mg/ml) and two fungal (MIC = 0.03-0.15 mg/ml) organisms, respectively. The E. coli isolate and A. flavus were the most susceptible bacteria and fungi, respectively. Caco-2 cells generally displayed higher selectivity index (SI) values compared to Vero cells and average SI values against Vero and Caco-2 cells for both bacteria and fungi ranged from 0.01 to 4.48 and 0.005 to 16.41, respectively. All plant extracts had good anti-biofilm activity (>50%) against at least one organism. The disruption of established biofilm growth by the plant samples proved to be more difficult to achieve than efficacy against planktonic forms of bacteria. This study shows that some of the plant species are potential candidates as alternative feed additives in poultry production. In the future, a poultry feed trial to evaluate their in vivo efficacy as herbal feed additives will be conducted.
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Affiliation(s)
| | | | - Lyndy J. McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Pretoria, South Africa
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de Freitas MA, da Cruz RP, dos Santos ATL, Almeida-Bezerra JW, Machado AJT, dos Santos JFS, Rocha JE, Boligon AA, Bezerra CF, de Freitas TS, do Nascimento Silva MK, Mendonça ACAM, da Costa JGM, Coutinho HDM, da Cunha FAB, Filho JR, Morais-Braga MFB. HPLC-DAD analysis and antimicrobial activities of Spondias mombin L. (Anacardiaceae). 3 Biotech 2022; 12:61. [PMID: 35186658 PMCID: PMC8818589 DOI: 10.1007/s13205-022-03126-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 01/23/2022] [Indexed: 12/18/2022] Open
Abstract
Spondias mombin is used in the folk medicine for the treatment of diarrhea and dysentery, indicating that extracts obtained from this species may present pharmacological activities against pathogenic microorganisms. The purpose of this work was to investigate the chemical composition and evaluate the antimicrobial activity of extracts obtained from the leaves (aqueous) and bark (hydroethanolic) of S. mombin both as single treatments and in combination with conventional drugs. Following a qualitative chemical prospection, the extracts were analyzed by HPLC-DAD. The antimicrobial activities were evaluated by microdilution. The combined activity of drugs and extracts was verified by adding a subinhibitory concentration of the extract in the presence of variable drug concentrations. The Minimum Fungicidal Concentration (MFC) was determined by a subculture of the microdilution test, while the effect of the in vitro treatments on morphological transition was analyzed by subculture in moist chambers. While the qualitative analysis detected the presence of phenols and flavonoids, the HPLC analysis identified quercetin, caffeic acid, and catechin as major components in the leaf extract, whereas kaempferol and quercetin were found as major compounds in the bark extract. The extracts showed effective antibacterial activities only against the Gram-negative strains. With regard to the combined activity, the leaf extract potentiated the action of gentamicin and imipenem (against Staphylococcus aureus), while the bark extract potentiated the effect of norfloxacin (against S. aureus), imipenem (against Escherichia coli), and norfloxacin (against Pseudomonas aeruginosa). A more significant antifungal (fungistatic) effect was achieved with the bark extract (even though at high concentrations), which further enhanced the activity of fluconazole. The extracts also inhibited the emission of filaments by Candida albicans and Candida tropicalis. Together, these findings suggest that that the extract constituents may act by favoring the permeability of microbial cells to conventional drugs, as well as by affecting virulence mechanisms in Candida strains.
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Aremu AO, Moyo M. Health benefits and biological activities of spiny monkey orange (Strychnos spinosa Lam.): An African indigenous fruit tree. JOURNAL OF ETHNOPHARMACOLOGY 2022; 283:114704. [PMID: 34601082 DOI: 10.1016/j.jep.2021.114704] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Spiny monkey orange (Strychnos spinosa Lam.) is an African endemic fruit tree that is widely consumed by humans and animals for its nutritional value. In folk medicine, different parts of S. spinosa are widely used for the management of the health and well-being of humans and livestock. AIM We provide a critical appraisal on the ethnobotanical uses, nutritional and pytochemical as well as the biological activities of S. spinosa. METHODS Articles were mined from online databases such as Google Scholar, PubMed, Science Direct, SciELO and SpringerLink. We captured research outputs that aligned with the scope of the review. RESULTS Strychnos spinosa remains a commonly consumed fruit due to its high nutritional (e.g. carbohydrates, crude protein and fats) content and energy. In folk medicine, different parts of S. spinosa are prescribed as remedy for diverse medical conditions especially for treating malaria, diabetes, snakebites, skin-related conditions and sexually transmitted infections in humans as well as sleeping sickness in livestock. Together with essential oils, more than 25 compounds have been profiled using Gas chromatography-mass spectrometry (GC-MS), and approximately 45 compounds have been isolated and structurally elucidated using diverse spectroscopic techniques such as UV-visible, Infrared (IR), Nuclear Magnetic Resonance (NMR) and mass spectroscopy (MS). Strychnos spinosa exerts varying degrees of biological activities against different microorganisms (bacteria and fungi) and parasites (plasmodia, trypanosomes and ticks) responsible for many diseases in humans and livestock. Furthermore, low to moderate enzyme-inhibitory effects of S. spinosa extracts suggest its ability to mitigate pains, inflammations and diabetics as well as snakebite venom. Increasing evidence from the in vivo studies support the use of the plant as a popular remedy for managing diabetics in folk medicine. The low cytotoxic effect of the plant extracts against different cell lines could be an indication of its relative safety. CONCLUSION Strychnos spinosa exhibits various health-promoting benefits due to its diverse nutritional and phytochemical constituents. Given that the majority of the existing evidence on these aforementioned therapeutic properties and safety are in vitro-based, the clinical significance of these results remain limited.
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Affiliation(s)
- Adeyemi Oladapo Aremu
- Indigenous Knowledge Systems Centre, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2790, North West Province, South Africa; School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban, 4000, South Africa.
| | - Mack Moyo
- Department of Horticulture, Faculty of Applied Sciences, Durban University of Technology, P.O. Box 1334, Durban, 4000, South Africa.
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Moroole MA, Materechera SA, Otang-Mbeng W, Hayeshi R, Bester C, Aremu AO. Phytochemical Profile, Safety and Efficacy of a Herbal Mixture Used for Contraception by Traditional Health Practitioners in Ngaka Modiri Molema District Municipality, South Africa. PLANTS 2022; 11:plants11020193. [PMID: 35050081 PMCID: PMC8778889 DOI: 10.3390/plants11020193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/30/2021] [Accepted: 01/05/2022] [Indexed: 11/16/2022]
Abstract
The use of medicinal plants for contraception remains a common practice among South African ethnic groups. The present study assessed the phytochemical profile, cytotoxicity, acute oral toxicity and efficacy of a herbal mixture used for contraception by the Batswana of South Africa. An aqueous extract was prepared from equal quantities (in terms of weight) of Bulbine frutescens (roots), Helichrysum caespititium (leaves) and Teucrium trifidum (leaves) based on a recipe used by traditional health practitioners. The phytochemical profiles of the freeze-dried herbal mixture were analyzed using gas chromatography–mass spectrometry (GC-MS). In addition, cytotoxicity was determined using an MTT assay on Vero cells and in vivo contraceptive efficacy was evaluated using seven Sprague Dawley rats per control and treatment groups. The control group received distilled water while test groups received 5, 50 and 300 mg/kg of the herbal mixture, which was administered orally once a day for three consecutive days. Subsequently, female rats were paired 1:1 with males for 3 days. Their weights were measured weekly and incidence of pregnancy was recorded. The GC-MS chromatogram revealed the presence of 12 identified and 9 unidentified compounds. In terms of safety, the herbal mixture had an IC50 value of 755.2 μg/mL and 2000 mg/kg, which was the highest tested dose that caused no mortality or morbidity in the rats. A contraceptive efficacy of 14.5% was exerted with 50 mg/kg herbal mixture extract while other doses had no effects given that all the rats were pregnant. Based on a chi-square test (p < 0.05), there was no correlation between the tested herbal mixture doses and contraception, nor on the weight of the rats. Overall, the herbal mixture extract was found to be safe but had limited contraceptive efficacy at the tested doses. In future studies, exploring increased dose range, solvent extract types and hormonal analysis will be pertinent.
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Affiliation(s)
- Molelekwa Arthur Moroole
- Indigenous Knowledge Systems Centre, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2790, North West Province, South Africa;
- Correspondence: (M.A.M.); (A.O.A.); Tel.: +27-18-3892573 (A.O.A.)
| | - Simeon Albert Materechera
- Indigenous Knowledge Systems Centre, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2790, North West Province, South Africa;
| | - Wilfred Otang-Mbeng
- School of Biology and Environmental Sciences, Faculty of Natural Sciences and Agriculture, University of Mpumalanga, Mbombela Campus, Private Bag X11283, Nelspruit 1200, Mpumalanga Province, South Africa;
| | - Rose Hayeshi
- Department of Science and Innovation/North-West University Preclinical Drug Development Platform (PCDDP), Faculty of Health Sciences, North-West University, Private Bag X6001, Potchefstroom 2520, North West Province, South Africa; (R.H.); (C.B.)
| | - Cor Bester
- Department of Science and Innovation/North-West University Preclinical Drug Development Platform (PCDDP), Faculty of Health Sciences, North-West University, Private Bag X6001, Potchefstroom 2520, North West Province, South Africa; (R.H.); (C.B.)
| | - Adeyemi Oladapo Aremu
- Indigenous Knowledge Systems Centre, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2790, North West Province, South Africa;
- Correspondence: (M.A.M.); (A.O.A.); Tel.: +27-18-3892573 (A.O.A.)
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Bezerra JN, Gomez MCV, Rolón M, Coronel C, Almeida-Bezerra JW, Fidelis KR, Menezes SAD, Cruz RPD, Duarte AE, Ribeiro PRV, Brito ESD, Coutinho HDM, Morais-Braga MFB, Bezerra CF. Chemical composition, Evaluation of Antiparasitary and Cytotoxic Activity of the essential oil of Psidium brownianum MART EX. DC. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2021.102247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Leite-Sampaio NF, Gondim CNFL, de Souza CES, Coutinho HDM. Antibiotic potentiating action of α-PINENE and borneol against EPEC and ETEC sorotypes. Microb Pathog 2021; 162:105371. [PMID: 34952151 DOI: 10.1016/j.micpath.2021.105371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 11/16/2022]
Abstract
Escherichia coli is considered the main cause of intestinal and extra-intestinal infections, they have virulence mechanisms in different pathotypes and the ability to receive or transmit antimicrobial resistance genes. The aim of this work was to investigate the antibacterial and antimicrobial modulating activity of α-pinene and borneol against E. coli and enteropathogenic (EPEC) and enterotoxigenic (ETEC) serotypes. The broth microdilution methodology with multidrug-resistant Escherichia coli, EPEC and ETEC was used to determine the Minimum Inhibitory Concentration (MIC) and evaluation of the modulating activity of antibiotics (ciprofloxacin, sulfamethoxazole-trimethoprim and metronidazole) of α-pinene and borneol. It was concluded that α-pinene and borneol showed a low antimicrobial action against multi-resistant E. coli, however, this action was not observed against the EPEC and ETEC serotypes. A synergistic action of borneol associated with ciprofloxacin against ETEC was noted.
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de Araújo-Neto JB, da Silva MMC, Oliveira-Tintino CDDM, Begnini IM, Rebelo RA, da Silva LE, Mireski SL, Nasato MC, Krautler MIL, Ribeiro-Filho J, Siyadatpanah A, Wilairatana P, Coutinho HDM, Tintino SR. Enhancement of Antibiotic Activity by 1,8-Naphthyridine Derivatives against Multi-Resistant Bacterial Strains. Molecules 2021; 26:7400. [PMID: 34885981 PMCID: PMC8659213 DOI: 10.3390/molecules26237400] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/02/2021] [Accepted: 12/04/2021] [Indexed: 11/24/2022] Open
Abstract
The search for new antibacterial agents has become urgent due to the exponential growth of bacterial resistance to antibiotics. Nitrogen-containing heterocycles such as 1,8-naphthyridine derivatives have been shown to have excellent antimicrobial properties. Therefore, the purpose of this study was to evaluate the antibacterial and antibiotic-modulating activities of 1,8-naphthyridine derivatives against multi-resistant bacterial strains. The broth microdilution method was used to determine the minimum inhibitory concentration (MIC) of the following compounds: 7-acetamido-1,8-naphthyridin-4(1H)-one and 3-trifluoromethyl-N-(5-chloro-1,8-naphthyridin-2-yl)-benzenesulfonamide. The antibiotic-modulating activity was analyzed using subinhibitory concentrations (MIC/8) of these compounds in combination with norfloxacin, ofloxacin, and lomefloxacin. Multi-resistant strains of Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus were used in both tests. Although the compounds had no direct antibacterial activity (MIC ≥ 1.024 µg/mL), they could decrease the MIC of these fluoroquinolones, indicating synergism was obtained from the association of the compounds. These results suggest the existence of a structure-activity relationship in this group of compounds with regard to the modulation of antibiotic activity. Therefore, we conclude that 1,8-naphthyridine derivatives potentiate the activity of fluoroquinolone antibiotics against multi-resistant bacterial strains, and thereby interesting candidates for the development of drugs against bacterial infections caused by multidrug resistant strains.
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Affiliation(s)
- José B. de Araújo-Neto
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri—URCA, Crato 63105-000, CE, Brazil; (J.B.d.A.-N.); (M.M.C.d.S.); (C.D.d.M.O.-T.); (S.R.T.)
| | - Maria M. C. da Silva
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri—URCA, Crato 63105-000, CE, Brazil; (J.B.d.A.-N.); (M.M.C.d.S.); (C.D.d.M.O.-T.); (S.R.T.)
| | - Cícera D. de M. Oliveira-Tintino
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri—URCA, Crato 63105-000, CE, Brazil; (J.B.d.A.-N.); (M.M.C.d.S.); (C.D.d.M.O.-T.); (S.R.T.)
| | - Iêda M. Begnini
- Department of Chemistry, Regional University of Blumenau—FURB, Itoupava Seca, Blumenau 89012-900, SC, Brazil; (I.M.B.); (R.A.R.); (S.L.M.); (M.C.N.); (M.I.L.K.)
| | - Ricardo A. Rebelo
- Department of Chemistry, Regional University of Blumenau—FURB, Itoupava Seca, Blumenau 89012-900, SC, Brazil; (I.M.B.); (R.A.R.); (S.L.M.); (M.C.N.); (M.I.L.K.)
| | - Luiz E. da Silva
- Postgraduate Program in Sustainable Territorial Development—Coastal Sector, Federal University of Paraná, Curitiba 80060-000, PR, Brazil;
| | - Sandro L. Mireski
- Department of Chemistry, Regional University of Blumenau—FURB, Itoupava Seca, Blumenau 89012-900, SC, Brazil; (I.M.B.); (R.A.R.); (S.L.M.); (M.C.N.); (M.I.L.K.)
| | - Michele C. Nasato
- Department of Chemistry, Regional University of Blumenau—FURB, Itoupava Seca, Blumenau 89012-900, SC, Brazil; (I.M.B.); (R.A.R.); (S.L.M.); (M.C.N.); (M.I.L.K.)
| | - Maria I. L. Krautler
- Department of Chemistry, Regional University of Blumenau—FURB, Itoupava Seca, Blumenau 89012-900, SC, Brazil; (I.M.B.); (R.A.R.); (S.L.M.); (M.C.N.); (M.I.L.K.)
| | - Jaime Ribeiro-Filho
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation (IGM-FIOCRUZ/BA), Rua Waldemar Falcão, 121, Candeal, Salvador 40296-710, BA, Brazil;
| | - Abolghasem Siyadatpanah
- Ferdows School of Paramedical and Health, Birjand University of Medical Sciences, Birjand 9717853577, Iran
- Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand 9717853577, Iran
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Henrique D. M. Coutinho
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri—URCA, Crato 63105-000, CE, Brazil; (J.B.d.A.-N.); (M.M.C.d.S.); (C.D.d.M.O.-T.); (S.R.T.)
| | - Saulo R. Tintino
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri—URCA, Crato 63105-000, CE, Brazil; (J.B.d.A.-N.); (M.M.C.d.S.); (C.D.d.M.O.-T.); (S.R.T.)
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Evaluation of isoeugenol in inhibition of Staphylococcus aureus efflux pumps and their toxicity using Drosophila melanogaster model. Life Sci 2021; 285:119940. [PMID: 34508763 DOI: 10.1016/j.lfs.2021.119940] [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] [Received: 06/18/2021] [Revised: 08/19/2021] [Accepted: 08/27/2021] [Indexed: 01/20/2023]
Abstract
The Staphylococcus aureus bacteria is a pathogen considered opportunistic and that has been acquiring resistance to several classes of antibiotics, mainly due to the synthesis of efflux pumps, which are proteins that expel these drugs intracellularly, reducing their effectiveness. The objective of this study was to evaluate the ability of isoeugenol to inhibit S. aureus efflux pumps and to determine its toxicity against a eukaryotic model (Drosophila melanogaster). IS-58, K2068 and K4414 S. aureus strains were used in the study. Isoeugenol minimum inhibitory concentration (MIC) and antibiotic modulation were evaluated in efflux pump inhibitory tests as well as in ethidium bromide (EtBr) assays. Toxicity tests against D. melanogaster assessed mortality and negative geotaxis. Isoeugenol obtained a relevant MIC result and a synergism was observed when isoeugenol was associated with the antibiotics, mainly with ciprofloxacin. Isoeugenol was able to affect all three efflux pumps tested, especially in strain K4414. The mortality of D. melanogaster caused by isoeugenol administration started after 12 h of exposure, being volume dependent and having an LC50 of 81.69 μL/L. In the negative geotaxis test, a statistical difference was observed after 24h of exposure compared to the control, demonstrating that damage to the locomotor apparatus had occurred. Based on the results, isoeugenol is a putative efflux pump inhibitor, becoming an alternative in blocking these proteins, and demonstrated acute toxicity against D. melanogaster.
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Maia DO, Santos VF, Barbosa CRS, Fróes YN, Muniz DF, Santos ALE, Santos MHC, Silva RRS, Silva CGL, Souza ROS, Sousa JCS, Coutinho HDM, Teixeira CS. Nickel (II) chloride schiff base complex: Synthesis, characterization, toxicity, antibacterial and leishmanicidal activity. Chem Biol Interact 2021; 351:109714. [PMID: 34710376 DOI: 10.1016/j.cbi.2021.109714] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/05/2021] [Accepted: 10/20/2021] [Indexed: 01/05/2023]
Abstract
The use of schiff base complex against microbial agentes a has recently received more attention as a strategy to combat infections caused by multidrug-resistant bacteria and leishmania. This study aimed to evaluate the toxicity, antibacterial and leishmanicidal activities of the nickel (II) chloride schiff base complex ([Ni(L2)] against Leishmania amazonensis promastigote, multi-resistant bacterial strains and evaluate to modulate antibiotic activity against multi-resistant bacterial. The schiff base complex was characterized by the techniques of elemental analysis, Fourier transform infrared spectroscopy (FTIR), UV-vis absorption spectroscopy and thermal analysis (TGA/DTG/DSC). The [Ni(L2)] complex presented moderate toxicity in saline artemia (LC50 = 150.8 μg/mL). In leishmanicidal assay, the NiL2 complex showed values of IC50 of (6.079 μg/mL ± 0.05656 at the 24 h), (0.854 μg/mL ± 0.02474, 48 h) and (1.076 μg/mL ± 0.04039, 72 h). In antibacterial assay, the [Ni(L2)] complex presented significant inhibited the bacterial growth of P. aeruginosa (MIC = 256 μg/mL). However, [Ni(L2)] complex did not present clinically relevant minimum inhibitory concentration (MIC ≥1024 μg/mL) against S. aureus and E. coli. The combination of [Ni(L2)] complex and antibacterial drugs resulted in the increased antibiotic activity of gentamicin and amikacin against S. aureus and E.coli multi-resistant strains. Thus, our results showed that [Ni(L2)] complex is a promising molecule for the development of new therapies associated with aminoglycoside antibiotics and in disease control related to resistant bacteria and leishmaniasis.
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Affiliation(s)
- Danielle O Maia
- Agrarian and Environmental Sciences Center, Federal University of Maranhão, Chapadinha, Maranhão, Brazil
| | - Valdenice F Santos
- Agrarian and Environmental Sciences Center, Federal University of Maranhão, Chapadinha, Maranhão, Brazil
| | - Cristina R S Barbosa
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | - Yuri N Fróes
- Postgraduate Program in Microbial Biology, CEUMA, University of São Luis, Maranhão, Brazil
| | - Debora F Muniz
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | - Ana L E Santos
- Medical School, Federal University of Cariri, Barbalha, Ceará, Brazil
| | - Maria H C Santos
- Agrarian and Environmental Sciences Center, Federal University of Maranhão, Chapadinha, Maranhão, Brazil
| | - Romério R S Silva
- Department of Biochemistry and Molecular Biology, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Cláudio G L Silva
- Medical School, Federal University of Cariri, Barbalha, Ceará, Brazil
| | - Racquel O S Souza
- Medical School, Federal University of Cariri, Barbalha, Ceará, Brazil
| | - Joicy C S Sousa
- Postgraduate Program in Microbial Biology, CEUMA, University of São Luis, Maranhão, Brazil
| | - Henrique D M Coutinho
- Department of Biological Chemistry, Regional University of Cariri, Crato, Ceará, Brazil
| | - Claudener S Teixeira
- Agrarian and Biodiversity Sciences Center, Federal University of Cariri, Crato, Ceará, Brazil.
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A Review of Ethnoveterinary Knowledge, Biological Activities and Secondary Metabolites of Medicinal Woody Plants Used for Managing Animal Health in South Africa. Vet Sci 2021; 8:vetsci8100228. [PMID: 34679058 PMCID: PMC8537377 DOI: 10.3390/vetsci8100228] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 09/30/2021] [Accepted: 10/08/2021] [Indexed: 11/17/2022] Open
Abstract
Globally, the use of ethnoveterinary medicine as remedies for animal health among different ethnic groups justify the need for a systematic exploration to enhance their potential. In addition, the increasing popularity and utilisation of woody plants remain common in traditional medicine, which may be attributed to their inherent benefits. The current review was aimed at analysing ethnoveterinary surveys, biological activities, and secondary metabolites/phytochemical profiles of the woody plants of South Africa. Eligible literature (period: 2000 to 2020) were retrieved from different databases such as Google Scholar, PubMed, Sabinet, and Science Direct. Based on the inclusion and exclusion criteria, 20 ethnoveterinary surveys were eligible and were subjected to further analysis. We identified 104 woody plant species from 44 plant families that are used in the treatment of different diseases in animals, particularly cattle (70%) and goats (20%). The most mentioned (with six citations) woody plants were Terminalia sericea Burch. ex DC and Ziziphus mucronata Willd., which were followed by plants with five (Cussonia spicata Thunb., Pterocarpus angolensis DC and Vachellia karroo (Hayne) Banfi & Galasso) or four (Acokanthera oppositifolia (Lam.) Codd, Cassia abbreviata Oliv., and Strychnos henningsii Gilg) individual mentions. The most dominant families were Fabaceae (19%), Apocynaceae (5.8%), Rubiaceae (5.8%), Anacardiaceae (4.8%), Combretaceae (4.8%), Euphorbiaceae (4.8%), Malvaceae (4.8%), Rhamnaceae (4.8%), and Celastraceae (3.8%). Bark (33%), leaves (29%), and roots (19%) were the plant parts dominantly used to prepare remedies for ethnoveterinary medicine. An estimated 20% of woody plants have been screened for antimicrobial, anthelmintic, antioxidant, and cytotoxicity effects. Phytochemical profiles established a rich pool of valuable secondary metabolites (phenolic, flavonoids and condensed tannins) that may be responsible for the exerted biological activities. Overall, the significant portion of woody plants lacking empirical evidence on their biological effects indicates a major knowledge gap that requires more research efforts.
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Leandro MKDNS, Moura JVB, Freire PDTC, Vega ML, Lima CDL, Hidalgo ÁA, de Araújo ACJ, Freitas PR, Paulo CLR, de Sousa AK, Rocha JE, Leandro LMG, da Silva ROM, Cruz-Martins N, Coutinho HDM. Characterization and Evaluation of Layered Bi 2WO 6 Nanosheets as a New Antibacterial Agent. Antibiotics (Basel) 2021; 10:1068. [PMID: 34572651 PMCID: PMC8468918 DOI: 10.3390/antibiotics10091068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 08/22/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Pathogenic microorganisms are causing increasing cases of mortality and morbidity, along with alarming rates of ineffectiveness as a result of acquired antimicrobial resistance. Bi2WO6 showed good potential to be used as an antibacterial substance when exposed to visible light. This study demonstrates for the first time the dimension-dependent antibacterial activity of layered Bi2WO6 nanosheets. Materials and methods: The synthesized layered Bi2WO6 nanosheets were prepared by the hydrothermal method and characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and Raman and Fourier transform infrared spectroscopy (FTIR). Antibacterial and antibiotic-modulation activities were performed in triplicate by the microdilution method associated with visible light irradiation (LEDs). Results: Bi2WO6 nanosheets were effective against all types of bacteria tested, with MIC values of 256 μg/mL against Escherichia coli standard and resistant strains, and 256 μg/mL and 32 μg/mL against Staphylococcus aureus standard and resistant strains, respectively. Two-dimensional (2D) Bi2WO6 nanosheets showed antibacterial efficiency against both strains studied without the presence of light. Conclusions: Layered Bi2WO6 nanosheets revealed dimension-dependent antibacterial activity of the Bi2WO6 system.
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Affiliation(s)
- Maria Karollyna do Nascimento Silva Leandro
- Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, Brazil; (M.K.d.N.S.L.); (A.C.J.d.A.); (P.R.F.); (C.L.R.P.); (A.K.d.S.); (J.E.R.)
- Department of Biomedicine, University Center Dr. Leão Sampaio, Juazeiro do Norte 63040-005, Brazil; (L.M.G.L.); (R.O.M.d.S.)
| | - João Victor Barbosa Moura
- Department of Physics, Science and Technology Center, Federal University of Maranhão, São Luís 65085-580, Brazil;
| | | | - Maria Leticia Vega
- Department of Physics, Campus Ministro Petrônio Portella, Federal University of Piauí, Teresina 64049-550, Brazil; (M.L.V.); (C.d.L.L.); (Á.A.H.)
| | - Cleânio da Luz Lima
- Department of Physics, Campus Ministro Petrônio Portella, Federal University of Piauí, Teresina 64049-550, Brazil; (M.L.V.); (C.d.L.L.); (Á.A.H.)
| | - Ángel Alberto Hidalgo
- Department of Physics, Campus Ministro Petrônio Portella, Federal University of Piauí, Teresina 64049-550, Brazil; (M.L.V.); (C.d.L.L.); (Á.A.H.)
| | - Ana Carolina Justino de Araújo
- Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, Brazil; (M.K.d.N.S.L.); (A.C.J.d.A.); (P.R.F.); (C.L.R.P.); (A.K.d.S.); (J.E.R.)
| | - Priscilla Ramos Freitas
- Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, Brazil; (M.K.d.N.S.L.); (A.C.J.d.A.); (P.R.F.); (C.L.R.P.); (A.K.d.S.); (J.E.R.)
| | - Cicera Laura Roque Paulo
- Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, Brazil; (M.K.d.N.S.L.); (A.C.J.d.A.); (P.R.F.); (C.L.R.P.); (A.K.d.S.); (J.E.R.)
| | - Amanda Karine de Sousa
- Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, Brazil; (M.K.d.N.S.L.); (A.C.J.d.A.); (P.R.F.); (C.L.R.P.); (A.K.d.S.); (J.E.R.)
- Department of Biomedicine, University Center Dr. Leão Sampaio, Juazeiro do Norte 63040-005, Brazil; (L.M.G.L.); (R.O.M.d.S.)
| | - Janaina Esmeraldo Rocha
- Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, Brazil; (M.K.d.N.S.L.); (A.C.J.d.A.); (P.R.F.); (C.L.R.P.); (A.K.d.S.); (J.E.R.)
| | - Lívia Maria Garcia Leandro
- Department of Biomedicine, University Center Dr. Leão Sampaio, Juazeiro do Norte 63040-005, Brazil; (L.M.G.L.); (R.O.M.d.S.)
| | - Rakel Olinda Macedo da Silva
- Department of Biomedicine, University Center Dr. Leão Sampaio, Juazeiro do Norte 63040-005, Brazil; (L.M.G.L.); (R.O.M.d.S.)
| | - Natália Cruz-Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernani Monteiro, 4200-319 Porto, Portugal
- Institute for research and Innovation in Health (i3S), University of Porto, Rua Alfredo Allen, 4200-319 Porto, Portugal
- Institute of Research and Advanced Training in Health Sciences and Technologies (CESPU), Rua Central de Gandra, 1317, 4585-116 Gandra, Portugal
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Regional University of Cariri, Crato 63105-000, Brazil; (M.K.d.N.S.L.); (A.C.J.d.A.); (P.R.F.); (C.L.R.P.); (A.K.d.S.); (J.E.R.)
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Inhibition of the MepA efflux pump by limonene demonstrated by in vitro and in silico methods. Folia Microbiol (Praha) 2021; 67:15-20. [PMID: 34417720 DOI: 10.1007/s12223-021-00909-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 08/09/2021] [Indexed: 10/20/2022]
Abstract
Bacterial resistance is a natural process carried out by bacteria, which has been considered a public health problem in recent decades. This process can be triggered through the efflux mechanism, which has been extensively studied, mainly related to the use of natural products to inhibit this mechanism. To carry out the present study, the minimum inhibitory concentration (MIC) tests of the compound limonene were performed, through the microdilution methodology in sterile 96-well plates. Tests were also carried out with the association of the compound with ethidium bromide and ciprofloxacin, in addition to the ethidium bromide fluorimetry, and later the molecular docking. From the tests performed, it was possible to observe that the compound limonene presented significant results when associated with ethidium bromide and the antibiotic used. Through the fluorescence emission, it was observed that when associated with the compound limonene, a greater ethidium bromide fluorescence was emitted. Finally, when analyzing the in silico study, it demonstrated that limonene can efficiently fit into the MepA structure. In this way, it is possible to show that limonene can contribute to cases of bacterial resistance through an efflux pump, so that it is necessary to carry out more studies to prove its effects against bacteria carrying an efflux pump and assess the toxicity of the compound.
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de Araújo ACJ, Freitas PR, Dos Santos Barbosa CR, Muniz DF, de Almeida RS, Alencar de Menezes IR, Ribeiro-Filho J, Tintino SR, Coutinho HDM. In Vitro and In Silico Inhibition of Staphylococcus aureus Efflux Pump NorA by α-Pinene and Limonene. Curr Microbiol 2021; 78:3388-3393. [PMID: 34268598 DOI: 10.1007/s00284-021-02611-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 07/07/2021] [Indexed: 11/25/2022]
Abstract
Since the discovery of the first antibiotics, bacteria have acquired a variety of resistance mechanisms, with efflux pump (EP) being the most prominent mechanism for intracellular targeting drugs. These proteins have become efficient mechanisms of resistance to antibiotics in species such as Staphylococcus aureus and, therefore, have been identified as promising therapeutic targets in antibacterial drug development. Accordingly, evidence suggests that monoterpenes can act as EP inhibitors and can be useful in circumventing bacterial resistance. This study aimed to evaluate the effectiveness of monoterpenes α-pinene and limonene as EP inhibitors against a strain of S. aureus expressing NorA protein. The minimum inhibitory concentration (MIC) against the 1199B strain of S. aureus, which carries genes encoding efflux proteins associated with antibiotic resistance to norfloxacin, was assessed through the broth microdilution method. The results obtained served as a subsidy for the analysis of the NorA pump inhibition with norfloxacin and ethidium bromide. Docking techniques, in silico, were used to evaluate the interaction of monoterpenes with NorA. Both monoterpenes showed no clinically effective antibacterial activity. Nevertheless, these compounds were found to decrease the MICs of ethidium bromide and norfloxacin indicating EP inhibition, which was confirmed by molecular docking analyses. In conclusion, α-pinene and limonene showed promising antibiotic-enhancing properties in S. aureus 1199B strain, indicating that monoterpenes can be used in targeted drug development to combat antibiotic resistance associated with EP expression.
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Affiliation(s)
- Ana Carolina Justino de Araújo
- Department of Biological Chemistry, Regional University of Cariri - URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato, CE, 63105-000, Brazil
| | - Priscilla Ramos Freitas
- Department of Biological Chemistry, Regional University of Cariri - URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato, CE, 63105-000, Brazil
| | | | - Débora Feitosa Muniz
- Department of Biological Chemistry, Regional University of Cariri - URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato, CE, 63105-000, Brazil
| | - Ray Silva de Almeida
- Department of Biological Chemistry, Regional University of Cariri - URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato, CE, 63105-000, Brazil
| | - Irwin Rose Alencar de Menezes
- Department of Biological Chemistry, Regional University of Cariri - URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato, CE, 63105-000, Brazil
| | - Jaime Ribeiro-Filho
- Gonçalo Moniz Institute (IGM), Oswaldo Cruz Foundation (FIOCRUZ), Salvador, BA, Brazil
| | - Saulo Relison Tintino
- Department of Biological Chemistry, Regional University of Cariri - URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato, CE, 63105-000, Brazil
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Regional University of Cariri - URCA, Rua Cel. Antonio Luis 1161, Pimenta, Crato, CE, 63105-000, Brazil.
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Muratori Costa L, Nascimento de Sousa J, Braz DC, Lima Ferreira JH, Sampaio Nogueira CE, Barbosa-Filho JM, de Sousa Lima-Neto J, Chavez Gutierrez SJ, de Araújo Abi-Chacra É, Barreto HM. Mechanism of the lethal effect of Riparin E against bacterial and yeast strains. Microb Pathog 2021; 157:104968. [PMID: 34029656 DOI: 10.1016/j.micpath.2021.104968] [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] [Received: 10/26/2020] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 12/29/2022]
Abstract
Riparins are alkamides naturally found in the fruits of Aniba riparia (Nees) Mez, but currently synthetic molecules as Riparin E (Rip-E) can be obtained. Potential biological of Rip-E as schistosomicidal agent against Schistosoma mansoni worms, as well as against Staphylococcus aureus strains has already been described. However, the mechanism of action related to antimicrobial activity of Rip-E against bacterial or fungi species has not yet been reported. This study had as objective to evaluate the Rip-E antimicrobial activity against Gram-positive and Gram-negative bacteria, as well as against yeast species of clinical importance. Minimal inhibitory concentrations of the compound against bacterial and yeast strains were determined by microdilution method. To verify if a possible lethal effect caused by Rip-E were related to plasma membrane damage, microbial cells treated with Rip-E were stained with 7-aminoactinomycin D (7-AAD) and analyzed by flow cytometry. Rip-E showed a bactericide effect against Gram-positive species S. aureus and S. epidermidis, as well as, against Gram-negative species Escherichia coli and Salmonella enterica Typhimurium, but was inactive against Pseudomonas aeruginosa. Moreover, Rip-E showed activity against fungi species Candida albicans and C. tropicalis. S. aureus, E. coli and C. albicans cells treated with Rip-E were marked with 7-aminoactinomycin D (7-AAD) indicating that Rip-E can cause plasma membrane damage, acting as a potential microbicide agent for prevention or treatment of infectious diseases.
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Affiliation(s)
- Luciana Muratori Costa
- Department of Parasitology and Microbiology, Federal University of Piauí, Teresina, Piauí, Brazil
| | | | | | | | | | - José Maria Barbosa-Filho
- Pharmaceutical Technology Laboratory, Federal University of Paraiba, João Pessoa, Paraíba, Brazil
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da Silva TG, da Silva JCP, Carneiro JNP, do Amaral W, Deschamps C, de Araújo JP, da Costa JGM, de Oliveira Almeida W, da Silva LE, Coutinho HDM, Filho JR, Morais-Braga MFB. Phytochemical characterization and inhibition of Candida sp. by the essential oil of Baccharis trimera (Less.) DC. Arch Microbiol 2021; 203:3077-3087. [PMID: 33787988 DOI: 10.1007/s00203-021-02304-8] [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: 12/20/2020] [Revised: 03/01/2021] [Accepted: 03/23/2021] [Indexed: 11/25/2022]
Abstract
This study aimed to investigate the chemical composition and antifungal potential of the essential oil of Baccharis trimera (Less.) DC. against Candida strains. The half maximal inhibitory concentration (IC50) was assessed by the microdilution method using the essential oil at a concentration range of 8192 to 8 μg/mL. The minimum fungicide concentration (MFC) was determined by subculture in solid medium. The ability of the essential oil to modulate the activity of antifungals was determined in wells treated simultaneously with the oil at a subinhibitory concentration (MFC/16) and fluconazole (FCZ). The fungal morphology was analyzed by microscopy. Gas chromatography coupled with mass spectrometry (GC/MS) was used to identify the chemical composition. The essential oil presented an CI50 of 11.24 and 1.45 μg/mL, which was found to potentiate the effect of FCZ against Candida albicans. On the other hand, this combined treatment resulted in antagonism against Candida tropicalis and no evident modulation against Candida krusei was observed. The essential oil significantly inhibited hyphae growth. However, with a MFC ≥ 16,384 μg/mL, it is assumed that it has a fungistatic action. The antifungal properties demonstrated in this study might be related to the presence of sesquiterpenes and monoterpenes, and the interaction between them. In conclusion, Baccharis trimera showed promising anti-Candida effects, in addition to potentiating the activity of FCZ against Candida albicans, affecting its morphological transition. Therefore, this species constitutes a source of chemical compounds with the potential to be used in the combat of fungal infections.
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Affiliation(s)
- Taís Gusmão da Silva
- Department of Biological Chemistry, Universidade Regional do Cariri, URCA, Av. Cel. Antonio Luiz, 1161, 63105-000, Crato, CE, Brasil
| | - Josefa Carolaine Pereira da Silva
- Department of Biological Chemistry, Universidade Regional do Cariri, URCA, Av. Cel. Antonio Luiz, 1161, 63105-000, Crato, CE, Brasil
| | - Joara Nályda Pereira Carneiro
- Department of Biological Chemistry, Universidade Regional do Cariri, URCA, Av. Cel. Antonio Luiz, 1161, 63105-000, Crato, CE, Brasil
| | | | | | | | - José Galberto Martins da Costa
- Department of Biological Chemistry, Universidade Regional do Cariri, URCA, Av. Cel. Antonio Luiz, 1161, 63105-000, Crato, CE, Brasil
| | - Waltécio de Oliveira Almeida
- Department of Biological Chemistry, Universidade Regional do Cariri, URCA, Av. Cel. Antonio Luiz, 1161, 63105-000, Crato, CE, Brasil
| | | | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Universidade Regional do Cariri, URCA, Av. Cel. Antonio Luiz, 1161, 63105-000, Crato, CE, Brasil.
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Luna E, Freitas T, Campina F, Costa M, Rocha J, Cruz R, Sena Júnior D, Silveira Z, Macedo N, Pinheiro J, Pereira-Júnior F, Lisboa M, Cruz G, Calixto Júnior J, Teixeira A, Coutinho H. Evaluation of phytochemical composition, toxicity in Drosophila melanogaster and effects on antibiotics modulation of Plathymenia reticulata Benth extract. Toxicol Rep 2021; 8:732-739. [PMID: 33868957 PMCID: PMC8042435 DOI: 10.1016/j.toxrep.2021.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 03/17/2021] [Accepted: 03/27/2021] [Indexed: 02/06/2023] Open
Abstract
Bacterial resistance is interfering with the action of antibiotics for clinical use in treating pathologies. The search for new substances capable of combating this resistance is necessary. An alternative to the search for these substances is in the extract of medicinal plants. Plathymenia reticulata, plant of the Fabaceae family, is a common tree species from the Brazilian cerrado, and is commonly used in areas of environmental degradation. This species is rich in phenolic compounds, such as flavonoids and tannins, compounds that are associated with various biological effects. A hydroethanolic extract from the bark of Plathymenia reticulata (HEPrB) was produced and then tests were carried out to verify the direct antibacterial activity, the modulatory effect of antibiotics for clinical use and their toxicity in Drosophila melanogaster flies. Through the analysis with UPLC, a wide variety of flavonoids contained in the HEPrB was observed. Direct antibacterial activity was observed for the standard strain of Staphylococcus aureus, however, the extract showed antagonistic activity or no significance in relation to the antibiotics tested in this study. As for toxicity, the HEPrB did not show significant damage in the proposed model. The results emphasize care when associating the consumption of teas with treatments with antibiotics for clinical use.
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Affiliation(s)
- E.M. Luna
- Departamento de Química Biológica, Laboratório de Simulações e Espectroscopia Molecular - LASEMOL, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - T.S. Freitas
- Departamento de Química Biológica, Laboratório de Simulações e Espectroscopia Molecular - LASEMOL, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - F.F. Campina
- Departamento de Química Biológica, Laboratório de Microbiologia e Biologia Molecular - LMBM, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - M.S. Costa
- Departamento de Química Biológica, Laboratório de Microbiologia e Biologia Molecular - LMBM, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - J.E. Rocha
- Departamento de Química Biológica, Laboratório de Microbiologia e Biologia Molecular - LMBM, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - R.P. Cruz
- Departamento de Química Biológica, Laboratório de Microbiologia e Biologia Molecular - LMBM, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - D.L. Sena Júnior
- Departamento de Química Biológica, Laboratório de Bioprospecção do Semiárido e Métodos Alternativos – LABSEMA, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - Z.S. Silveira
- Departamento de Química Biológica, Laboratório de Bioprospecção do Semiárido e Métodos Alternativos – LABSEMA, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - N.S. Macedo
- Departamento de Química Biológica, Laboratório de Bioprospecção do Semiárido e Métodos Alternativos – LABSEMA, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - J.C.A. Pinheiro
- Laboratório de Bioensaios - LABIO, Universidade Federal do Cariri - UFCA, Instituto de Formação de Educadores, Campus Brejo Santo, CE, Brazil
| | - F.N. Pereira-Júnior
- Centro de Ciências Agrárias e da Biodiversidade – CCAB, Federal University of Cariri, Juazeiro do Norte, CE, Brazil
| | - M.A.N. Lisboa
- Laboratório de Estudos da Flora Regional do Cariri - LEFLORE/URCA, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - G.V. Cruz
- Laboratório de Estudos da Flora Regional do Cariri - LEFLORE/URCA, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - J.T. Calixto Júnior
- Laboratório de Estudos da Flora Regional do Cariri - LEFLORE/URCA, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - A.M.R. Teixeira
- Departamento de Química Biológica, Laboratório de Simulações e Espectroscopia Molecular - LASEMOL, Universidade Regional do Cariri, Crato, Ceará, Brazil
| | - H.D.M. Coutinho
- Departamento de Química Biológica, Laboratório de Microbiologia e Biologia Molecular - LMBM, Universidade Regional do Cariri, Crato, Ceará, Brazil
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Pessoa RF, Duarte Figueiredo IA, Dantas Ferreira SR, Lima de Farias Cavalcanti Silva AR, Marinho Paiva RL, Cordeiro LV, de Oliveira Lima E, Cabrera SP, Sarmento Silva TM, de Andrade Cavalcante F. Investigation of ethnomedicinal use of Commiphora leptophloeos (Mart.) J. B. Gillett (Burseraceae) in treatment of diarrhea. JOURNAL OF ETHNOPHARMACOLOGY 2021; 268:113564. [PMID: 33166628 DOI: 10.1016/j.jep.2020.113564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 10/07/2020] [Accepted: 11/05/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Commiphora leptophloeos (Mart.) J.B. Gillett, popularly known as "imburana", "imburana-de-cheiro" or "imburana-de-espinho", has been used in folk medicine for the treatment of gastrointestinal diseases, such as diarrhea. The indian tribes "Kairir-Shokó and shokó use the bark to treat diarrhea. However, there is no scientific evidence to justify the therapeutic use of this species. AIM OF THE STUDY To investigate the ethnomedicinal use of Commiphora leptophloeos, with respect to the antimicrobial, antisecretory, antimotility and antispasmodic activities of the crude ethanolic extract obtained from its leaves (CL-EtOHL) and the mechanism underlying this action in rodents. MATERIAL AND METHODS In the evaluation of antibacterial and antifungal activities was determined the minimum inhibitory concentration (MIC) of the extract, against different strains of bacteria and fungi. All experimental protocols were approved by the Animal Ethics Committee of the Federal University of Paraíba (045/2016). In addition, behavioral screening and acute toxicity assessment of CL-EtOHL were performed in female mice (n = 6). In the investigation of antidiarrheal activity (n = 6), frequency of defecation and number of liquid stools, were classified during 4 h, and intestinal fluid and transit were measured. In addition, the antispasmodic effect on rat ileum (n = 5) was also investigated. RESULTS The ethanolic extract is rich in flavonoids and the main were identified as C-glycosylated flavonoids (isoorientin, orientin, and vitexin). In the evaluation of antimicrobial and antifungal activity, the extract showed moderate efficacy only against the tested strains of Candida krusei ATCC-6258, Candida parapsilosis ATCC-22019 and Candida glabrata ATCC-90030. The extract had no toxic effect until 2000 mg/kg. In castor oil-induced diarrhea, CL-EtOHL inhibited, in a dose-dependent manner, both total defecation frequency (ED50 = 380.4 ± 145.4 mg/kg) and the number of watery stools (ED50 = 151.2 ± 76.3 mg/kg). The extract showed no effect on fluid accumulation or normal intestinal transit. On the other hand, when the animals were pretreated with castor oil, the extract decreased the distance traveled by the activated charcoal (ED50 = 177.0 ± 50.3 mg/kg). In the investigation of antispasmodic effect, CL-EtOHL antagonized the contractions induced by KCl 30 mM (IC50 = 208.2 ± 25.9 μg/mL) and CCh 10-6 M (IC50 = 95. ± 22.0 μg/mL). To verify the participation of muscarinic receptors in this effect, cumulative carbachol curves were performed in the absence and presence of the extract, and a non-competitive pseudo-irreversible antagonism of these receptors was observed. CONCLUSION The data indicate that ethanol extract obtained from the leaves of Commiphora leptophloeos has an antidiarrheal effect due to inhibition of the intestinal motility and antispasmodic effect, through the antagonism of muscarinic receptors. In addition, we suggest that flavonoids isolated from CL-EtOHL may be responsible for antidiarrheal activity of this extract. This explains its ethnomedicinal use in the treatment of diarrhea.
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Affiliation(s)
- Rayane Fernandes Pessoa
- Programa de Pós-graduação Em Produtos Naturais e Sintéticos Bioativos/Universidade Federal da Paraíba, Brazil
| | | | | | | | | | - Laísa Vilar Cordeiro
- Programa de Pós-graduação Em Produtos Naturais e Sintéticos Bioativos/Universidade Federal da Paraíba, Brazil
| | - Edeltrudes de Oliveira Lima
- Programa de Pós-graduação Em Produtos Naturais e Sintéticos Bioativos/Universidade Federal da Paraíba, Brazil; Departamento de Ciências Farmacêuticas/Universidade Federal da Paraíba, Brazil
| | | | | | - Fabiana de Andrade Cavalcante
- Programa de Pós-graduação Em Produtos Naturais e Sintéticos Bioativos/Universidade Federal da Paraíba, Brazil; Departamento de Fisiologia e Patologia/Universidade Federal da Paraíba, Brazil.
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de Araújo ACJ, Freitas PR, Dos Santos Barbosa CR, Muniz DF, Ribeiro-Filho J, Tintino SR, Júnior JPS, Filho JMB, de Sousa GR, Coutinho HDM. Modulation of Drug Resistance by Limonene: Inhibition of Efflux Pumps in Staphylococcus aureus Strains RN-4220 and IS-58. Curr Drug Metab 2021; 22:110-113. [PMID: 33397229 DOI: 10.2174/1389200221999210104204718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/09/2020] [Accepted: 09/09/2020] [Indexed: 11/22/2022]
Abstract
AIMS This study aimed to investigate the potential of limonene as an efflux pump (EP) inhibitor in Staphylococcus aureus strains, RN-4220 and IS-58, which carry EPs for erythromycin (MrsA) and tetracycline (TetK), respectively. BACKGROUND The evolution of bacterial resistance mechanisms over time has impaired the action of most classes of antibiotics. Staphylococcus aureus is a notable bacterium, with high pathogenic potential and demonstrated resistance to conventional antibiotics. Considering the importance of discovering novel compounds to combat antibiotic resistance, our group previously demonstrated the antibacterial properties of limonene, a compound present in the essential oils of several plant species. OBJECTIVE This study aimed to investigate the potential of limonene as an efflux pump (EP) inhibitor in Staphylococcus aureus strains RN-4220 and IS-58, which carry EPs for erythromycin (MrsA) and tetracycline (TetK), respectively. METHODS The minimum inhibitory concentrations (MIC) of limonene and other efflux pump inhibitors were determined through the broth microdilution method. A reduction in the MIC of ethidium bromide was used as a parameter of EP inhibition. RESULT While limonene was not shown to exhibit direct antibacterial effects against EP-carrying strains, in association with ethidium bromide and antibiotics, this compound demonstrated enhanced antibacterial activity, indicating the inhibition of the MrsA and TetK pumps. CONCLUSION In conclusion, this pioneering study demonstrated the effectiveness of limonene as an EP inhibitor in S. aureus strains, RN-4220 and IS-58. Nevertheless, further studies are required to characterize the molecular mechanisms associated with limonene-mediated EP inhibition.
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Affiliation(s)
- Ana C J de Araújo
- Department of Biological Chemistry, Regional University of Cariri, URCA, Crato, CE, Brazil
| | - Priscilla R Freitas
- Department of Biological Chemistry, Regional University of Cariri, URCA, Crato, CE, Brazil
| | | | - Débora F Muniz
- Department of Biological Chemistry, Regional University of Cariri, URCA, Crato, CE, Brazil
| | - Jaime Ribeiro-Filho
- Goncalo Moniz Institute, Oswaldo Cruz Foundation, IGM-FIOCRUZ/BA, Salvador, BA, Brazil
| | - Saulo R Tintino
- Department of Biological Chemistry, Regional University of Cariri, URCA, Crato, CE, Brazil
| | - José P S Júnior
- Federal University of Paraiba - UFPB, Joao Pessoa, Paraiba, Brazil
| | - José M B Filho
- Federal University of Paraiba - UFPB, Joao Pessoa, Paraiba, Brazil
| | | | - Henrique D M Coutinho
- Department of Biological Chemistry, Regional University of Cariri, URCA, Crato, CE, Brazil
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E Silva AKF, Dos Reis AC, Pinheiro EEA, de Sousa JN, de Alcântara Oliveira FA, Moura AKS, de Sousa L Neto J, das Graças L Citó AM, Siqueira-Júnior JP, Kaatz GW, Barreto HM. Modulation of the Drug Resistance by Platonia insignis Mart. Extract, Ethyl Acetate Fraction and Morelloflavone/Volkensiflavone (Biflavonoids) in Staphylococcus aureus Strains Overexpressing Efflux Pump Genes. Curr Drug Metab 2021; 22:114-122. [PMID: 32445452 DOI: 10.2174/1389200221666200523155617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/13/2020] [Accepted: 02/02/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Microbial resistance to antibiotics is a global public health problem, which requires urgent attention. Platonia insignis is a native species from the eastern Brazilian Amazon, used in the treatment of burns and wounds. OBJECTIVES To evaluate the antimicrobial activity of the hydroalcoholic extract of P. insignis (PIHA), the ethyl acetate fraction (PIAE), and its subfraction containing a mixture of biflavonoids (BF). Moreover, the effect of these natural products on the antibiotic activity against S. aureus strains overexpressing efflux pump genes was also evaluated. METHODS Minimal inhibitory concentrations were determined against different species of microorganisms. To evaluate the modulatory effect on the Norfloxacin-resistance, the MIC of this antibiotic was determined in the absence and presence of the natural products at subinhibitory concentrations. Inhibition of the EtBr efflux assays were conducted in the absence or presence of natural products. RESULTS PIHA showed a microbicidal effect against S. aureus and C. albicans, while PIAE was bacteriostatic for S. aureus. PIAE and BF at subinhibitory concentrations were able to reduce the MIC of Norfloxacin acting as modulating agents. BF was able to inhibit the efflux of EtBr efflux in S. aureus strains overexpressing specific efflux pump genes. CONCLUSION P. inignisis, a source of efflux pump inhibitors, including volkensiflavone and morelloflavone, which were able to potentiate the Norfloxacin activity by NorA inhibition, being also able to inhibit QacA/B, TetK and MsrA. Volkensiflavone and morelloflavone could be used as an adjuvant in the antibiotic therapy of multidrug resistant S. aureus strains overexpressing efflux pumps.
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Affiliation(s)
- Andressa K F E Silva
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piaui, Teresina PI, Brazil
| | - Antonielly C Dos Reis
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piaui, Teresina PI, Brazil
| | | | - Jonas N de Sousa
- Laboratory of Research in Microbiology, Federal University of Piaui, Teresina PI, Brazil
| | | | - Arkellau K S Moura
- Laboratory of Organic Geochemistry, Federal University of Piaui, Teresina, PI, Brazil
| | - José de Sousa L Neto
- Laboratory of Organic Geochemistry, Federal University of Piaui, Teresina, PI, Brazil
| | | | - José P Siqueira-Júnior
- Laboratory of Genetic of Microorganisms, Federal University of Paraiba, Joao Pessoa PB, Brazil
| | - Glenn W Kaatz
- Department of Medicine, Division of Infectious Diseases, Wayne State University, School of Medicine, Detroit, Michigan, SC, United States
| | - Humberto M Barreto
- Laboratory of Research in Microbiology, Federal University of Piaui, Teresina PI, Brazil
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Inhibition of Staphylococcus aureus TetK and MsrA efflux pumps by hydroxyamines derived from lapachol and norlachol. J Bioenerg Biomembr 2021; 53:149-156. [PMID: 33635515 DOI: 10.1007/s10863-021-09885-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 02/18/2021] [Indexed: 02/06/2023]
Abstract
The present study aimed to evaluate the in vitro efflux pump inhibitory capacity of hydroxyamines derived from lapachol and norlachol, where compounds 3, 4, and 5 were tested against the S. aureus strains: RN4220 carrying the pUL5054 plasmid; and IS-58, endowed with the PT181 plasmid. The substances were synthesized from 2-hydroxy-quinones, lapachol and nor-lapachol obtaining the corresponding 2-methoxylated derivatives via dimethyl sulfate alkylation in a basic medium, which then reacted chemoselectively with 2-ethanolamine and 3-propanolamine to form the corresponding amino alcohols. The antibacterial action of the substances was quantified by determining the Minimum Inhibitory Concentration (MIC), while a microdilution assay was carried out to ascertain efflux pump inhibition of Staphylococcus aureus strains carrying the MsrA macrolide and the TetK tetracycline efflux pumps with the substances at a sub-inhibitory concentration. The results were subjected to statistical analysis by an ANOVA test and Bonferroni post hoc test. The MIC from the substances exhibited a value ≥ 1024 µg/mL. However, a significant reduction (p < 0.0001) of the erythromycin, tetracycline and ethidium bromide MIC was demonstrated when these were in combination with the substances, with this effect being due to a supposed efflux pump inhibition. The tested substances demonstrated effectiveness at decreasing the MIC of erythromycin, tetracycline and ethidium bromide, potentially by inhibiting the MsrA macrolide and the TetK tetracycline efflux pumps present in the tested S. aureus strains.
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Aissani F, Grara N, Bensouici C, Bousbia A, Ayed H, Idris MHM, Teh LK. Algerian Sonchus oleraceus L.: a comparison of different extraction solvent on phytochemical composition, antioxidant properties and anti-cholinesterase activity. ADVANCES IN TRADITIONAL MEDICINE 2021. [DOI: 10.1007/s13596-021-00553-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Leal ALAB, Bezerra CF, Confortin C, da Silva LE, Marinho EM, Marinho MM, Vasconcelos MA, da Silva TG, Marinho ES, Teixeira AMR, Coutinho HDM, Barreto HM, Dos Santos HS. Chemical composition and potentiating action of Norfloxacin mediated by the essential oil of Piper caldense C.D.C. against Staphylococcus aureus strains overexpressing efflux pump genes. Arch Microbiol 2021; 203:4727-4736. [PMID: 34052872 PMCID: PMC8164493 DOI: 10.1007/s00203-021-02393-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 02/08/2023]
Abstract
Infectious diseases caused by multidrug-resistant microorganisms has increased in the last years. Piper species have been reported as a natural source of phytochemicals that can help in combating fungal and bacterial infections. This study had as objectives characterize the chemical composition of the essential oil from Piper caldense (EOPC), evaluate its potential antimicrobial activity, and investigate the synergistic effect with Norfloxacin against multidrug-resistant S. aureus overproducing efflux pumps, as well as, verify the EOPC ability to inhibit the Candida albicans filamentation. EOPC was extracted by hydrodistillation, and the chemical constituents were identified by gas chromatography, allowing the identification of 24 compounds (91.9%) classified as hydrocarbon sesquiterpenes (49.6%) and oxygenated sesquiterpenes (39.5%). Antimicrobial tests were performed using a 96-well plate microdilution method against C. albicans ATCC 10231, Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 25923 standard strains, as well as against multidrug-resistant strains S. aureus SA1199B (overexpressing norA gene), S. aureus K2068 (overexpressing mepA gene) and S. aureus K4100 (overexpressing qacC gene). The oil showed activity against C. albicans ATCC 10231 (≥ 512 µg/mL) and was able to inhibit hyphae formation, an important mechanism of virulence of C. albicans. On the other hand, EOPC was inactive against all bacterial strains tested (≤ 1,024 µg mL). However, when combined with Norfloxacin at subinhibitory concentration EOPC reduced the Norfloxacin and Ethidium bromide MIC values against S. aureus strains SA1199B, K2068 and K4100. These results indicate that EOPC is a source of phytochemicals acting as NorA, MepA and QacC inhibitors.
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Affiliation(s)
- Antonio Linkoln Alves Borges Leal
- Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil
- Department of Microbiology and Parasitolog, Federal University of Piaui, Teresina, PI, Brazil
| | - Camila Fonseca Bezerra
- Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, PE, Brazil
| | - Camila Confortin
- Postgraduate Programme in Sustainable Territorial, Federal University of Paraná, Curitiba, PR, Brazil
| | - Luiz Everson da Silva
- Postgraduate Programme in Sustainable Territorial, Federal University of Paraná, Curitiba, PR, Brazil
| | - Emanuelle Machado Marinho
- Department of Analytical Chemistry and Physical Chemistry, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Márcia Machado Marinho
- Faculty of Education, Science and Letters of Iguatu, State University of Ceará, Iguatu, CE, Brazil
| | | | - Terezinha Gonçalves da Silva
- Department of Antibiotics, Drug Planning and Synthesis Laboratory-LPSF, Federal University of Pernambuco, Cidade Universitária, Recife, PE, Brazil
| | - Emmanuel Silva Marinho
- Group of Theoretical Chemistry and Electrochemistry, State University of Ceará, Campus FAFIDAM, Limoeiro do Norte, Fortaleza, CE, Brazil
| | | | | | | | - Hélcio Silva Dos Santos
- Department of Biological Chemistry, Regional University of Cariri, Crato, CE, Brazil.
- Center for Exact Sciences and Technology, Vale do Acarau State University, Sobral, CE, Brazil.
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Costa DP, Castro AC, Silva GA, Lima‐Junior CG, Andrade Júnior FP, Oliveira Lima E, Vaz BG, Silva LC. Microwave‐assisted synthesis and antimicrobial activity of novel spiro 1,3,4‐thiadiazolines from isatin derivatives. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Aleff Cruz Castro
- Department of Chemistry Federal University of Paraíba João Pessoa Brazil
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Pessoa MLDS, Silva LMO, Araruna MEC, Serafim CADL, Júnior EBA, Silva AO, Pessoa MMB, Neto HD, Lima EDO, Batista LM. Antifungal activity and antidiarrheal activity via antimotility mechanisms of (-)-fenchone in experimental models. World J Gastroenterol 2020; 26:6795-6809. [PMID: 33268962 PMCID: PMC7684460 DOI: 10.3748/wjg.v26.i43.6795] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 08/12/2020] [Accepted: 10/01/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND (-)-Fenchone is a bicyclic monoterpene present in essential oils of plant species, such as Foeniculum vulgare and Peumus boldus, used to treatment of gastrointestinal diseases. Pharmacological studies report its anti-inflammatory, antioxidant, and antinociceptive activity.
AIM To investigate antidiarrheal activity related to gastrointestinal motility, intestinal secretion and antimicrobial activity.
METHODS A castor oil-induced diarrhea model was used to evaluate antidiarrheal activity. Intestinal transit and gastric emptying protocols were used to assess a possible antimotility effect. Muscarinic receptors, presynaptic α2-adrenergic and tissue adrenergic receptors, KATP channels, nitric oxide were investigated to uncover antimotility mechanisms of action and castor oil-induced enteropooling to elucidate antisecretory mechanisms. The antimicrobial activity was evaluated in the minimum inhibitory concentration model, the fractional inhibitory concentration index using the (-)-fenchone association method with standard antifungal agents.
RESULTS (-)-Fenchone (75, 150 and 300 mg/kg) showed antidiarrheal activity, with a significant decrease in the evacuation index. This activity is possibly related to a percentage of reduced intestinal transit (75, 150 and 300 mg/kg). The antimotility effect of (-)-fenchone decreased in the presence of pilocarpine, yohimbine, propranolol, L-NG-nitroarginine methyl ester or glibenclamide. In the enteropooling model, no reduction in intestinal fluid weight was observed. (-)- Fenchone did not show antibacterial activity; on the other hand, inhibits the growth of strains of fungi with a minimum fungicide concentration of 32 μg/mL. However, when it was associated with amphotericin B, no synergism was observed.
CONCLUSION The antidiarrheal effect of (-)-fenchone in this study involves antimotility effect and not involve antisecretory mechanisms. (-)-Fenchone presents antifungal activity; however, it did not show antibacterial activity.
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Affiliation(s)
- Michelle Liz de Souza Pessoa
- Department of Pharmaceutical Sciences, IPeFarM, Federal University of Paraíba, João Pessoa 58051-970, Paraíba, Brazil
| | | | - Maria Elaine Cristina Araruna
- Department of Pharmaceutical Sciences, IPeFarM, Federal University of Paraíba, João Pessoa 58051-970, Paraíba, Brazil
| | | | - Edvaldo Balbino Alves Júnior
- Department of Pharmaceutical Sciences, IPeFarM, Federal University of Paraíba, João Pessoa 58051-970, Paraíba, Brazil
| | - Alessa Oliveira Silva
- Department of Pharmaceutical Sciences, IPeFarM, Federal University of Paraíba, João Pessoa 58051-970, Paraíba, Brazil
| | | | - Hermes Diniz Neto
- Department of Pharmaceutical Sciences, IPeFarM, Federal University of Paraíba, João Pessoa 58051-970, Paraíba, Brazil
| | - Edeltrudes de Oliveira Lima
- Department of Pharmaceutical Sciences, IPeFarM, Federal University of Paraíba, João Pessoa 58051-970, Paraíba, Brazil
| | - Leônia Maria Batista
- Postgraduate Program in Natural and Synthetic Bioactive Products, Universidade Federal da Paraiba, João Pessoa 58051-900, Brazil
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