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Amparo TR, Seibert JB, Almeida TC, Costa FSF, Silveira BM, da Silva GN, Dos Santos ODH, de Souza GHB. In silico approach of secondary metabolites from Brazilian herbal medicines to search for potential drugs against SARS-CoV-2. Phytother Res 2021; 35:4297-4308. [PMID: 33797123 PMCID: PMC8250981 DOI: 10.1002/ptr.7097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 12/16/2020] [Accepted: 02/24/2021] [Indexed: 12/29/2022]
Abstract
The new severe acute respiratory syndrome coronavirus (SARS‐CoV‐2) recently emerged as a worrying pandemic, with many confirmed cases and deaths globally. Therefore, there is a clear need for identifying effective therapeutic options and a review of secondary metabolites related to Brazilian herbal medicines was performed as a strategy for the discovery of new antiviral agents. To confirm this potential, an in silico screening of the identified compounds identified was also evaluated. The review was performed by the PubMed database and the selected natural compounds were subjected to in silico analysis such as QSAR, molecular docking and ADMET. 497 secondary metabolites were identified from 23 species. The in silico assays indicated 19 potential anti‐SARS‐CoV‐2 compounds, being triterpenes and phenolic compounds. The indicated compounds showed a high affinity with proteins considered as the main molecular targets against SARS‐CoV‐2 and parameters indicated low toxicity. In addition to Brazilian medicinal plants, these compounds can be found in other species and they can be a base for the synthesis of other anti‐COVID‐19 drugs. Therefore, this review is important to conduct researches that address the emerging need for drugs in COVID‐19 treatment.
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Affiliation(s)
- Tatiane R Amparo
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Janaína B Seibert
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Tamires C Almeida
- Laboratório de Pesquisas Clínicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Fernanda S F Costa
- Laboratório de Microbiologia Ambiental e Biotecnologia, Universidade Vila Velha, Vila Velha, Brazil
| | - Benila M Silveira
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Glenda N da Silva
- Laboratório de Pesquisas Clínicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | | | - Gustavo H B de Souza
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
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Oliveira DAJ, Amaral JG, Garcia LB, Dos Santos MS, Silva LAO, Almeida MP, Gomes AF, Barros DRP, Lopes NP, Pereira GR, Dos Santos ODH, Ruela ALM. Associating chitosan and microemulsion as a topical vehicle for the administration of herbal medicines. Carbohydr Polym 2020; 255:117482. [PMID: 33436242 DOI: 10.1016/j.carbpol.2020.117482] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 10/20/2020] [Accepted: 12/01/2020] [Indexed: 11/20/2022]
Abstract
A viscous solution of low molecular weight chitosan (CH) at 5% w/v (10.2 kDa, 75 % deacetylated, 1451 cP at 25 °C) was associated with a microemulsion (ME) that undergoes a phase transition after water absorption in situ (≈28 % w/w), forming a more viscous liquid crystal, which was potentially evaluated as a topical vehicle. The ME was selected from a phase diagram, selecting a composition based on Tween® 80 (52 %), myristate isopropyl (28 %), and the aqueous phase (water and polyethylene glycol 400, 60:40 w/w) (20 %), which was after replaced by CH and herbal medicines (HM). HM are alternatives to treat candidiasis, and Stryphnodendron adstringens shell extract, characterized by molecular networking, and Melaleuca alternifolia Chell essential oil (46 % of terpinen-4-ol), showed in vitro activity against Candida albicans. Associating CH in ME improved the mechanical properties of the topical formulation, as adhesiveness, which is an advantageous feature for the topical treatment of vulvovaginal candidiasis.
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Affiliation(s)
- Denise A J Oliveira
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Juliano G Amaral
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Laryana B Garcia
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Milena S Dos Santos
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Lorena A O Silva
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Maiara P Almeida
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Angélica F Gomes
- Instituto Multidisciplinar em Saúde, Campus Anísio Teixeira, Universidade Federal da Bahia, 45029-094, Vitória da Conquista, Bahia, Brazil.
| | - Danielle R P Barros
- Núcleo de Pesquisa em Produtos Naturais e Sintéticos (NPPNS), Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Norberto P Lopes
- Núcleo de Pesquisa em Produtos Naturais e Sintéticos (NPPNS), Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - Gislaine R Pereira
- Faculdade de Ciências Farmacêuticas, Universidade Federal de Alfenas, Alfenas, Minas Gerais, Brazil.
| | - Orlando D H Dos Santos
- Escola de Farmácia, Universidade Federal de Ouro Preto, 35400-000, Ouro Preto, Minas Gerais, Brazil.
| | - André L M Ruela
- Escola de Farmácia, Universidade Federal de Ouro Preto, 35400-000, Ouro Preto, Minas Gerais, Brazil.
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Seibert JB, Viegas JSR, Almeida TC, Amparo TR, Rodrigues IV, Lanza JS, Frézard FJG, Soares RDOA, Teixeira LFM, de Souza GHB, Vieira PMA, Barichello JM, Dos Santos ODH. Nanostructured Systems Improve the Antimicrobial Potential of the Essential Oil from Cymbopogon densiflorus Leaves. J Nat Prod 2019; 82:3208-3220. [PMID: 31815454 DOI: 10.1021/acs.jnatprod.8b00870] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The physicochemical characteristics of nanostructured suspensions are important prerequisites for the success of new drug development. This work aimed to develop nanometric systems containing Cymbopogon densiflorus leaf essential oil and to evaluate their antimicrobial activity. The essential oil was isolated by hydrodistillation from leaves and analyzed by GC-MS. The main constituents were found to be trans-p-mentha-2,8-dien-1-ol, cis-p-mentha-2,8-dien-1-ol, trans-p-mentha-1(7),8-dien-2-ol, cis-piperitol, and cis-p-mentha-1(7),8-dien-2-ol. In silico prediction analysis suggested that this oil possesses antimicrobial potential and the main mechanism of action might be the peptidoglycan glycosyltransferase inhibition. Nanoemulsions were prepared by the phase inversion method, and liposomes were made by the film hydration method. Qualitative evaluation of the antimicrobial activity was performed by the diffusion disk assay with 24 microorganisms; all of them were found to be sensitive to the essential oil. Subsequently, this property was quantified by the serial microdilution technique, where the nanoformulations demonstrated improved activity in comparison with the free oil. Bactericidal action was tested by the propidium iodide method, which revealed that free essential oil and nanoemulsion increased cytoplasmic membrane permeability, while no difference was observed between negative control and liposome. These results were confirmed by images obtained using transmission electron microscopy. This study has shown an optimization in the antimicrobial activity of C. densiflorus essential oil by a nanoemulsion and a liposomal formulation of the active substances.
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Affiliation(s)
- Janaína B Seibert
- Departamento de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - Juliana S R Viegas
- Departamento de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - Tamires C Almeida
- Departamento de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - Tatiane R Amparo
- Departamento de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - Ivanildes V Rodrigues
- Departamento de Farmácia , Universidade Federal de Juiz de Fora , Governador Valadares , 36010-041 , Brazil
| | - Juliane S Lanza
- Departamento de Fisiologia e Biofísica , Universidade Federal de Minas Gerais , Belo Horizonte , 30150-260 , Brazil
| | - Frédéric J G Frézard
- Departamento de Fisiologia e Biofísica , Universidade Federal de Minas Gerais , Belo Horizonte , 30150-260 , Brazil
| | - Rodrigo D O A Soares
- Núcleo de Pesquisas em Ciências Biológicas , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - Luiz Fernando M Teixeira
- Departamento de Análises Clínicas , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - Gustavo H B de Souza
- Departamento de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - Paula M A Vieira
- Departamento de Ciências Biológicas , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
| | - José M Barichello
- Departamento de Farmácia , Universidade Federal de Pelotas , Pelotas , 96020-000 , Brazil
| | - Orlando D H Dos Santos
- Departamento de Farmácia , Universidade Federal de Ouro Preto , Ouro Preto , 35400-000 , Brazil
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Masson DS, Morais GG, de Morais JM, de Andrade FF, Dos Santos ODH, de Oliveira WP, Rocha Filho PA. Polyhydroxy Alcohols and Peach Oil Addition Influence on Liquid Crystal Formation and Rheological Behavior of O/W Emulsions. J DISPER SCI TECHNOL 2005. [DOI: 10.1081/dis-200054579] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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