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Araújo IM, Pereira RLS, de Araújo ACJ, Gonçalves SA, Tintino SR, Oliveira-Tintino CDDM, de Menezes IRA, Salamoni R, Begnini IM, Rebelo RA, Silva LED, Gurgel APAD, Coutinho HDM. Meldrum's acid derivates are MepA efflux pump inhibitors: In vitro and in silico essays. J Basic Microbiol 2024; 64:e2300558. [PMID: 38110852 DOI: 10.1002/jobm.202300558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/23/2023] [Accepted: 12/03/2023] [Indexed: 12/20/2023]
Abstract
Efflux pumps are proteins capable of expelling antibiotics from bacterial cells, have emerged as a major mechanism of bacterial resistance. In the ongoing pursuit to overcome and reduce bacterial resistance, novel substances are being explored as potential efflux pump inhibitors. Meldrum's acid, a synthetic molecule widely studied for its role in synthesizing bioactive compounds, holds promise in this regard. Therefore, the objective of this study is to evaluate the antibacterial activity of three derivatives of Meldrum's acid and assess their ability to inhibit efflux mechanisms, employing both in silico and in vitro approaches. The antibacterial activity of the derivatives was assessed using a broth microdilution testing method. Surprisingly, the derivatives did not exhibit direct antibacterial activity on their own. However, they displayed a significant effect in enhancing the efficacy of antibiotics, suggesting a potential role in potentiating their effects. Furthermore, fluorescence emission assays using ethidium bromide indicated that the derivatives could potentially block efflux pumps, as they exhibited fluorescence levels comparable to the positive control. To further investigate their inhibitory capacity, molecular docking studies were conducted in silico, revealing binding interactions similar to ciprofloxacin and carbonyl cyanide 3-chlorophenylhydrazone, known efflux pump inhibitors. These findings highlight the potential of Meldrum's acid derivatives as effective inhibitors of efflux pumps. By targeting these mechanisms, the derivatives offer a promising avenue to enhance the effectiveness of antibiotics and combat bacterial resistance. This study underscores the importance of exploring novel strategies in the fight against bacterial resistance and provides valuable insights into the potential of Meldrum's acid derivatives as efflux pump inhibitors. Further research and exploration in this field are warranted to fully exploit their therapeutic potential.
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Affiliation(s)
- Isaac Moura Araújo
- Department of Chemistry-Biology, Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | | | | | | | - Saulo Relison Tintino
- Department of Chemistry-Biology, Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | | | | | - Renata Salamoni
- Department of Chemistry, Regional University of Blumenau (FURB), Itoupava Seca, Blumenau, Santa Catarina, Brazil
| | - Iêda Maria Begnini
- Department of Chemistry, Regional University of Blumenau (FURB), Itoupava Seca, Blumenau, Santa Catarina, Brazil
| | - Ricardo Andrade Rebelo
- Department of Chemistry, Regional University of Blumenau (FURB), Itoupava Seca, Blumenau, Santa Catarina, Brazil
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Kamli H, Shaikh A, Bappi MH, Raposo A, Ahmad MF, Sonia FA, Akbor MS, Prottay AAS, Gonçalves SA, Araújo IM, Coutinho HDM, Elbendary EY, Lho LH, Han H, Islam MT. Sclareol exerts synergistic antidepressant effects with quercetin and caffeine, possibly suppressing GABAergic transmission in chicks. Biomed Pharmacother 2023; 168:115768. [PMID: 37866001 DOI: 10.1016/j.biopha.2023.115768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/17/2023] [Accepted: 10/17/2023] [Indexed: 10/24/2023] Open
Abstract
This study evaluated the effects of sclareol (SCL) with or without caffeine (CAF) and quercetin (QUR) using in-vivo and in-silico studies. For this, 5-day-old chicks weighing between 45 and 48 g were randomly divided into five groups and treated accordingly. The chicks were monitored to compare the occurrence, latency, and duration of sleep as well as the loss and gain of righting reflex in response to SCL-10 mg/kg, CAF-10 mg/kg, and QUR-50 mg/kg using a thiopental sodium (TS)-induced sleeping model. Data were analyzed by one-way ANOVA followed by t-Student-Newman-Keuls' as a posthoc test at 95% confidence intervals with multiple comparisons. An in-silico study was also performed to investigate the possible antidepressant mechanisms of the test and/or standard drugs with different subunits of GABAA receptors. In comparison to the SCL, CAF, and QUR individual groups, SCL+CAF+QUR significantly increased the latency while decreasing the length of sleep. The incidence of loss and gain of the righting reflex was also modulated in the combination group. SCL showed better interaction with GABAA (α2 and α5) subunits than QUR with α2, α3, and α5. All these compounds showed stronger interactions with the GABAA receptor subunits than the standard CAF. Taken together, SCL, CAF, and QUR reduced the TS-induced righting reflex and sleeping time in the combination group more than in the individual treatments. SCL may show its antidepressant effects, possibly through interactions with GABAA receptor subunits.
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Affiliation(s)
- Hossam Kamli
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia
| | - Ahmad Shaikh
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia
| | - Mehedi Hasan Bappi
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - António Raposo
- CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Md Faruque Ahmad
- Department of Clinical Nutrition, College of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
| | - Fatema Akter Sonia
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Md Showkoth Akbor
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Abdullah Al Shamsh Prottay
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh
| | - Sheila Alves Gonçalves
- Department of Biological Chemistry, Laboratory of Microbiology and Molecular Biology, Program of Post-Graduation in Molecular Bioprospection, Regional University of Cariri, Crato, CE 63105-000, Brazil
| | - Isaac Moura Araújo
- Department of Biological Chemistry, Laboratory of Microbiology and Molecular Biology, Program of Post-Graduation in Molecular Bioprospection, Regional University of Cariri, Crato, CE 63105-000, Brazil
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Laboratory of Microbiology and Molecular Biology, Program of Post-Graduation in Molecular Bioprospection, Regional University of Cariri, Crato, CE 63105-000, Brazil
| | - Ehab Y Elbendary
- Department of Clinical Nutrition, College of Applied Medical Sciences, Jazan University, Jazan 45142, Saudi Arabia
| | - Linda Heejung Lho
- College of Business Division of Tourism and Hotel Management, Cheongju University, 298 Daesung-ro, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do 28503, Republic of Korea.
| | - Heesup Han
- College of Hospitality and Tourism Management, Sejong University, 98 Gunja-Dong, Gwanjin-Gu, Seoul 143-747, Republic of Korea.
| | - Muhammad Torequl Islam
- Department of Pharmacy, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj 8100, Bangladesh.
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Costa Dos Santos D, Silva Macêdo N, de Sousa Silveira Z, Silva Pereira RL, Moura Araújo I, Justino Araújo AC, Alves Gonçalves S, da Silveira Regueira Neto M, de Queiroz Balbino V, Torres de Carvalho A, Oliveira de Veras B, Bezerra da Cunha FA, Melo Coutinho HD, Vieira Brito S. Antibacterial and Toxic Activity of Geopropolis Extracts from Melipona subnitida (Ducke, 1910) (Hymenoptera: Apidae) and Scaptotrigona depilis (Moure, 1942) (Hymenoptera: Apidae). Chem Biodivers 2023; 20:e202300931. [PMID: 37776535 DOI: 10.1002/cbdv.202300931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 09/20/2023] [Accepted: 09/24/2023] [Indexed: 10/02/2023]
Abstract
Bacteria are associated with many infections that affect humans and present antibiotic resistance mechanisms, causing problems in health organisations and increased mortality rates. Therefore, it is necessary to find new antibacterial agents that can be used in the treatment of these microorganisms. Geopropolis is a natural product from stingless bees, formed by a mixture of plant resins, salivary secretions, wax and soil particles, the chemical composition of this natural product is diverse. Thus, this study aimed to evaluate antibacterial activity, antibiotic modulation and the toxicity of geopropolis extracts from the stingless bees, Melipona subnitida (Ducke, 1910) and Scaptotrigona depilis (Moure, 1942) against standard and multi-resistant Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa bacteria. Geopropolis samples were collected in a meliponary located in Camaragibe, Pernambuco, Brazil. To determine the Minimum Inhibitory Concentration (MIC) and antibiotic modulation we performed broth microdilution tests. Mortality tests were used to verify extract toxicity in the model Drosophila melanogaster. The microbiological tests showing that the M. subnitida extracts had better inhibitory effects compared to S. depilis, presenting direct antibacterial activity against standard and multi-resistant strains. The extracts potentialized antibiotic effects, suggesting possible synergy and did not present toxicity in the model used. The information obtained in this study highlights extracts as promising antibacterial agents and is the first study to evaluate bacterial activity in these extracts, in addition to verifying their modulating effects and determining toxicity in the model used.
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Affiliation(s)
- Danilo Costa Dos Santos
- Programa de Pós-Graduação em Ciências Ambientais, Centro de Ciências de Chapadinha, Universidade Federal do Maranhão, BR 222, Km 04, S/N, Boa Vista, CEP 65500-000, Chapadinha, Maranhão, Brasil
| | - Nair Silva Macêdo
- Semiarid Bioprospecting Laboratory (LABSEMA), Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | - Zildene de Sousa Silveira
- Semiarid Bioprospecting Laboratory (LABSEMA), Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | - Raimundo Luiz Silva Pereira
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | - Isaac Moura Araújo
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | - Ana Carolina Justino Araújo
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | - Sheila Alves Gonçalves
- Laboratory of Microbiology and Molecular Biology (LMBM), Regional University of Cariri-URCA, Crato, Ceará, Brazil
| | | | | | - Airton Torres de Carvalho
- Department of Biosciences, Center of Biological and Health Sciences, Federal Rural, University of the Semi-Arid, Mossoró, RN, Brazil
| | - Bruno Oliveira de Veras
- Department of Biochemistry, Federal University of Pernambuco, 50670-420, Recife, Pernambuco, Brazil
| | | | | | - Samuel Vieira Brito
- Programa de Pós-Graduação em Ciências Ambientais, Centro de Ciências de Chapadinha, Universidade Federal do Maranhão, BR 222, Km 04, S/N, Boa Vista, CEP 65500-000, Chapadinha, Maranhão, Brasil
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Oliveira-Tintino CDDM, Santana JEG, Alencar GG, Siqueira GM, Gonçalves SA, Tintino SR, de Menezes IRA, Rodrigues JPV, Gonçalves VBP, Nicolete R, Ribeiro-Filho J, da Silva TG, Coutinho HDM. Valencene, Nootkatone and Their Liposomal Nanoformulations as Potential Inhibitors of NorA, Tet(K), MsrA, and MepA Efflux Pumps in Staphylococcus aureus Strains. Pharmaceutics 2023; 15:2400. [PMID: 37896161 PMCID: PMC10609713 DOI: 10.3390/pharmaceutics15102400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/14/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023] Open
Abstract
Valencene and nootkatone are aromatic sesquiterpenes with known biological activities, such as antimicrobial, antioxidant, anti-inflammatory, and antitumor. Given the evidence that encapsulation into nanosystems, such as liposomes, could improve the properties of several compounds, the present study aimed to evaluate the activity of these sesquiterpenes in their isolated state or in liposomal formulations against strains of Staphylococcus aureus carrying efflux pumps. The broth microdilution method evaluated the antibiotic-enhancing activity associated with antibiotics and ethidium bromide (EtBr). The minimum inhibitory concentration was assessed in strains of S. aureus 1199B, IS-58, and RN4220, which carry the efflux proteins NorA, Tet(K), and MsrA. In tests with strain 1199B, valencene reduced the MIC of norfloxacin and EtBr by 50%, while the liposomal formulation of this compound did not show a significant effect. Regarding the strain IS-58, valencene, and its nanoformulation reduced norfloxacin MIC by 60.3% and 50%, respectively. In the non-liposomal form, the sesquiterpene reduced the MIC of EtBr by 90%. Against the RN4220 strain, valencene reduced the MIC of the antibiotic and EtBr by 99% and 93.7%, respectively. Nootkatone and its nanoformulation showed significant activity against the 1199B strain, reducing the EtBr MIC by 21.9%. Against the IS-58 strain, isolated nootkatone reduced the EtBr MIC by 20%. The results indicate that valencene and nootkatone potentiate the action of antibiotics and efflux inhibitors in strains carrying NorA, Tet(K), and MsrA proteins, which suggests that these sesquiterpenes act as efflux pump inhibitors in S. aureus. Therefore, further studies are needed to assess the impact of incorporation into liposomes on the activity of these compounds in vivo.
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Affiliation(s)
- Cícera Datiane de Morais Oliveira-Tintino
- Department of Biological Chemistry, Regional University of Cariri (URCA), Crato 63105-010, CE, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (S.A.G.); (S.R.T.); (I.R.A.d.M.)
| | | | - Gabriel Gonçalves Alencar
- Department of Biological Chemistry, Regional University of Cariri (URCA), Crato 63105-010, CE, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (S.A.G.); (S.R.T.); (I.R.A.d.M.)
| | - Gustavo Miguel Siqueira
- Department of Biological Chemistry, Regional University of Cariri (URCA), Crato 63105-010, CE, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (S.A.G.); (S.R.T.); (I.R.A.d.M.)
| | - Sheila Alves Gonçalves
- Department of Biological Chemistry, Regional University of Cariri (URCA), Crato 63105-010, CE, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (S.A.G.); (S.R.T.); (I.R.A.d.M.)
| | - Saulo Relison Tintino
- Department of Biological Chemistry, Regional University of Cariri (URCA), Crato 63105-010, CE, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (S.A.G.); (S.R.T.); (I.R.A.d.M.)
| | - Irwin Rose Alencar de Menezes
- Department of Biological Chemistry, Regional University of Cariri (URCA), Crato 63105-010, CE, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (S.A.G.); (S.R.T.); (I.R.A.d.M.)
| | | | | | - Roberto Nicolete
- Oswaldo Cruz Foundation (Fiocruz Ceará), Eusébio 61773-270, CE, Brazil; (J.P.V.R.); (V.B.P.G.); (R.N.)
| | - Jaime Ribeiro-Filho
- Oswaldo Cruz Foundation (Fiocruz Ceará), Eusébio 61773-270, CE, Brazil; (J.P.V.R.); (V.B.P.G.); (R.N.)
| | - Teresinha Gonçalves da Silva
- Department of Antibiotics, Federal University of Pernambuco (UFPE), Recife 50670-901, PE, Brazil; (J.E.G.S.); (T.G.d.S.)
| | - Henrique Douglas Melo Coutinho
- Department of Biological Chemistry, Regional University of Cariri (URCA), Crato 63105-010, CE, Brazil; (C.D.d.M.O.-T.); (G.G.A.); (G.M.S.); (S.A.G.); (S.R.T.); (I.R.A.d.M.)
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