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Teixeira SC, de Souza G, Junior JPDL, Rosini AM, Martínez AFF, Fernandes TADM, Ambrósio SR, Veneziani RCS, Bastos JK, Martins CHG, Barbosa BF, Ferro EAV. Copaifera spp. oleoresins and two isolated compounds (ent-kaurenoic and ent-polyalthic acid) inhibit Toxoplasma gondii growth in vitro. Exp Parasitol 2024; 262:108771. [PMID: 38723847 DOI: 10.1016/j.exppara.2024.108771] [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: 10/23/2023] [Revised: 04/18/2024] [Accepted: 05/06/2024] [Indexed: 05/12/2024]
Abstract
Toxoplasmosis affects about one-third of the world's population. The disease treatment methods pose several side effects and do not efficiently eliminate the parasite, making the search for new therapeutic approaches necessary. We aimed to assess the anti-Toxoplasma gondii activity of four Copaifera oleoresins (ORs) and two isolated diterpene acids, named ent-kaurenoic and ent-polyalthic acid. We used HeLa cells as an experimental model of toxoplasmosis. Uninfected and infected HeLa cells were submitted to the treatments, and the parasite intracellular proliferation, cytokine levels and ROS production were measured. Also, tachyzoites were pre-treated and the parasite invasion was determined. Finally, an in silico analysis was performed to identify potential parasite targets. Our data show that the non-cytotoxic concentrations of ORs and diterpene acids controlled the invasion and proliferation of T. gondii in HeLa cells, thus highlighting the possible direct action on parasites. In addition, some compounds tested controlled parasite proliferation in an irreversible manner. An additional and non-exclusive mechanism of action involves the modulation of host cell components, by affecting the upregulation of the IL-6. Additionally, molecular docking suggested that ent-polyalthic acid has a high affinity for the active site of the TgCDPK1 protein. Copaifera ORs have great antiparasitic activity against T. gondii, and this effect can be partially explained by the presence of the isolated compounds ent-kaurenoic and ent-polyalthic acid.
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Affiliation(s)
- Samuel Cota Teixeira
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Guilherme de Souza
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Joed Pires de Lima Junior
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Alessandra Monteiro Rosini
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Aryani Felixa Fajardo Martínez
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | | | - Sergio Ricardo Ambrósio
- Nucleus of Research in Technological and Exact Sciences, Universidade de Franca, Franca, SP, Brazil
| | | | - Jairo Kenupp Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Carlos Henrique Gomes Martins
- Department of Microbiology, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Bellisa Freitas Barbosa
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - Eloisa Amália Vieira Ferro
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Sciences, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil.
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Ozanique PR, Helena AL, Menezes RDP, Gonçalves DS, Santiago MB, Dilarri G, Sardi JDCO, Ferreira H, Martins CHG, Regasini LO. Synthesis, Antibacterial Effects, and Toxicity of Licochalcone C. Pharmaceuticals (Basel) 2024; 17:634. [PMID: 38794203 PMCID: PMC11124413 DOI: 10.3390/ph17050634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/11/2024] [Accepted: 05/12/2024] [Indexed: 05/26/2024] Open
Abstract
Drug-resistant bacteria constitute a big barrier against current pharmacotherapy. Efforts are urgent to discover antibacterial drugs with novel chemical and biological features. Our work aimed at the synthesis, evaluation of antibacterial effects, and toxicity of licochalcone C (LCC), a naturally occurring chalcone. The synthetic route included six steps, affording a 10% overall yield. LCC showed effects against Gram-positive bacteria (MIC = 6.2-50.0 µg/mL), Mycobacterium species (MIC = 36.2-125 µg/mL), and Helicobacter pylori (MIC = 25 µg/mL). LCC inhibited the biofilm formation of MSSA and MRSA, demonstrating MBIC50 values of 6.25 μg/mL for both strains. The investigations by fluorescence microscopy, using PI and SYTO9 as fluorophores, indicated that LCC was able to disrupt the S. aureus membrane, similarly to nisin. Systemic toxicity assays using Galleria mellonella larvae showed that LCC was not lethal at 100 µg/mL after 80 h treatment. These data suggest new uses for LCC as a compound with potential applications in antibacterial drug discovery and medical device coating.
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Affiliation(s)
- Patrick Rômbola Ozanique
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, SP, Brazil; (P.R.O.); (A.L.H.)
| | - Alvaro Luiz Helena
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, SP, Brazil; (P.R.O.); (A.L.H.)
| | - Ralciane de Paula Menezes
- Department Microbiology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Umuarama 38405-320, MG, Brazil; (R.d.P.M.); (D.S.G.); (M.B.S.); (C.H.G.M.)
| | - Daniela Silva Gonçalves
- Department Microbiology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Umuarama 38405-320, MG, Brazil; (R.d.P.M.); (D.S.G.); (M.B.S.); (C.H.G.M.)
| | - Mariana Brentini Santiago
- Department Microbiology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Umuarama 38405-320, MG, Brazil; (R.d.P.M.); (D.S.G.); (M.B.S.); (C.H.G.M.)
| | - Guilherme Dilarri
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, SP, Brazil; (G.D.); (H.F.)
| | | | - Henrique Ferreira
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, SP, Brazil; (G.D.); (H.F.)
| | - Carlos Henrique Gomes Martins
- Department Microbiology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Umuarama 38405-320, MG, Brazil; (R.d.P.M.); (D.S.G.); (M.B.S.); (C.H.G.M.)
| | - Luis Octávio Regasini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, SP, Brazil; (P.R.O.); (A.L.H.)
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Namkona AF, Rahmani R, Worowounga X, Syssa-Magalé JL, Matondo H, Bouajila J. Copaifera mildbraedii Desf.: Phytochemical Composition of Extracts, Essential Oil, and In Vitro Biological Activities of Bark. PLANTS (BASEL, SWITZERLAND) 2024; 13:877. [PMID: 38592880 PMCID: PMC10974413 DOI: 10.3390/plants13060877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 04/11/2024]
Abstract
Copaifera mildbraedii Desf. is an evergreen tree with an umbrella-like crown. It is distributed from south-eastern Nigeria eastward to the Central African Republic (CAR). The aim of this study was to assess the chemical composition and biological activities of C. mildbraedii bark, as well as the chemical composition of the essential oil. Ethyl acetate (EtOAc) and methanol (MeOH) extracts showed a high total phenolic content (TPC) (149.9 and 148.8 mg GAE/g dry residue (dr), respectively), which was related to good antioxidant activity (DPPH) with an IC50 of 21.2 and 12.9 µg/mL, respectively. High-performance liquid chromatography coupled with diode array detector (HPLC-DAD) analysis revealed seven phenolic compounds with myricitrin (13.3 mg/g dr) and 2,4-dihydroxy-3,6-dimethyl benzoic acid (30.7 mg/g dr) as major compounds, while gas chromatography-mass spectrometry (GC-MS) analysis enabled detection of 13 volatile compounds (3 before and 10 after derivatization). Thirty compounds were identified in the essential oil, which corresponds to 65% of all identified compounds. Among the latter, E,E-farnesylacetone and γ-gurjunene were considered as major compounds (8.08 and 10.43%, respectively). The EtOAc extract showed a potent potential, simultaneously, against anti-acetylcholinesterase (AChE), anti-15-lipoxygenase (15-LOX), anti-xanthine oxidase (XOD), and cytotoxic (OVCAR) activities, whereas cyclohexane (CYHA) and dichloromethane (DCM) extracts showed a cytotoxic effect with high percentages of inhibition (95.2%).
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Affiliation(s)
- Armel-Frederic Namkona
- Faculté de Pharmacie de Toulouse, Université de Toulouse, Université Paul Sabatier, 118-Route de Narbonne, F-31062 Toulouse, France; (A.-F.N.); (X.W.); (H.M.)
- Laboratoire d’Analyse, d’Architecture et de Réactivité des Substances Naturelles (LAARSN), Faculté des Sciences, Université de Bangui, Bangui BP 908, Central African Republic;
| | - Rami Rahmani
- Laboratoire de Recherche “Biodiversité, Molécules et Applications LR22ES02”, Institut Supérieur de Biologie Appliquée, Université de Gabes, Gabes 6072, Tunisia;
| | - Xavier Worowounga
- Faculté de Pharmacie de Toulouse, Université de Toulouse, Université Paul Sabatier, 118-Route de Narbonne, F-31062 Toulouse, France; (A.-F.N.); (X.W.); (H.M.)
- Laboratoire d’Analyse, d’Architecture et de Réactivité des Substances Naturelles (LAARSN), Faculté des Sciences, Université de Bangui, Bangui BP 908, Central African Republic;
| | - Jean-Laurent Syssa-Magalé
- Laboratoire d’Analyse, d’Architecture et de Réactivité des Substances Naturelles (LAARSN), Faculté des Sciences, Université de Bangui, Bangui BP 908, Central African Republic;
| | - Hubert Matondo
- Faculté de Pharmacie de Toulouse, Université de Toulouse, Université Paul Sabatier, 118-Route de Narbonne, F-31062 Toulouse, France; (A.-F.N.); (X.W.); (H.M.)
| | - Jalloul Bouajila
- Faculté de Pharmacie de Toulouse, Université de Toulouse, Université Paul Sabatier, 118-Route de Narbonne, F-31062 Toulouse, France; (A.-F.N.); (X.W.); (H.M.)
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Silva LNR, Oliveira ECP, Baratto LC. Amazonian useful plants described in the book "Le Pays des Amazones" (1885) of the Brazilian propagandist Baron de Santa-Anna Nery: a historical and ethnobotanical perspective. JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE 2024; 20:26. [PMID: 38409064 PMCID: PMC10897987 DOI: 10.1186/s13002-024-00663-2] [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: 12/20/2023] [Accepted: 02/13/2024] [Indexed: 02/28/2024]
Abstract
BACKGROUND Frederico José de Santa-Anna Nery (1848-1901) was a Brazilian Baron who referred to himself as a "volunteer propagandist" for Brazil in Europe, serving as an immigration agent to publicize the living conditions in the Amazon region, advocating for its development and modernization at the end of the nineteenth century. Santa-Anna Nery's most famous book is "Le Pays des Amazones" (The Lands of the Amazons), first published in 1885, which the author dedicated a chapter to introduce and report on the Amazonian useful plant species and its relationship with humans. The aim of this work is to understand the historical context and ethnobotanical value of the plant species in the Brazilian Amazon at the end of the nineteenth century through an analysis of the book "Le Pays des Amazones" (1885) by Baron de Santa-Anna Nery, as well as to bring to light the historical importance of this very influential propagandist, who has been forgotten nowadays. METHODS The original book "Le Pays des Amazones" (1885), as well as the original 3rd edition and its translated version into Portuguese, was carefully analyzed and all information about plants was systematized, with botanical names being updated. Finally, using the scientific name of medicinal plants alone or in combination with their traditional use, a search was carried out in databases in order to indicate current pharmacological studies that provide evidence about the described traditional uses. RESULTS A total of 156 plant species were identified in the book, although 132 species had their scientific names updated. These species belong to 45 different families, with Fabaceae and Arecaceae the most represented, and 109 plants are Brazilian native. Considering only the 36 medicinal plants, the main medicinal indications reported were astringent, purgative/laxative, stimulant and tonic, vermifuge, febrifuge, sudorific, emetic, diuretic and antidysenteric. Regarding other useful plants (non-medicinal), 97 species were cited for food, constructions and buildings, spices and condiments, ornaments and objects, carpentry, textile fibers, gums, oils, balms and essences, pigments and tanning, hunting and fishing. CONCLUSIONS When the book "Le Pays des Amazones" is analyzed from a timeless perspective, with a particular focus on historical ethnobotany, it is possible to observe the economic, social, and political importance of many useful plants for the Amazon at the end of the nineteenth century and how the relationship between local people, indigenous communities, and immigrants was established with plant biodiversity.
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Affiliation(s)
- Lucas N R Silva
- Laboratory of Medicinal Plant Biotechnology, Post-Graduate Program in Biosciences, Universidade Federal do Oeste do Pará (UFOPA), Santarém, Pará (PA), Brazil
| | - Elaine C P Oliveira
- Laboratory of Medicinal Plant Biotechnology, Post-Graduate Program in Biosciences, Universidade Federal do Oeste do Pará (UFOPA), Santarém, Pará (PA), Brazil
| | - Leopoldo C Baratto
- Laboratory of Applied Pharmacognosy, Faculty of Pharmacy, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Rio de Janeiro (RJ), Brazil.
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Dos Santos JG, Fernandes CC, Silva NBS, Calefi GG, Martins CHG, Volpini GA, Crotti AEM, Ribeiro AB, Esperandim TR, Tavares DC, Batalini C, Miranda MLD. Volatile compounds of hexane extract from Pterodon pubescens Benth seeds and its significant in vitro potential against different bacterial strains. Nat Prod Res 2023:1-6. [PMID: 38143320 DOI: 10.1080/14786419.2023.2297405] [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: 08/16/2023] [Accepted: 12/11/2023] [Indexed: 12/26/2023]
Abstract
Pterodon pubescens Benth is a Brazilian medicinal plant (sucupira, in Brazilian Portuguese). This paper aims to determine the volatile composition and antibacterial activities of hexane extract from P. pubescens seeds (HE-PP). Antibacterial activities were screened by the microdilution broth method in 96-well culture plates and MIC values were expressed as µg/mL. HE-PP was active against several oral bacteria whose MIC values ranged between 12.5 µg/mL and 50 µg/mL and against three mycobacterial strains (MIC = 125 µg/mL and 500 µg/mL). In addition, HE-PP was active against Xanthomonas citri strain (MIC = 100 µg/mL). Cytotoxic activity of the extract was evaluated in human tumour and non-tumour cell lines. HE-PP showed selective cytotoxicity to cervical adenocarcinoma (HeLa cells - IC50 = 53.47 µg/mL). Its major constituents were identified by GC-MS and GC-FID: E-caryophyllene, vouacapane, E-geranylgeraniol and dehydroabietol. Results reinforce the biological potential of HE-PP against a broad spectrum of pathogenic and phytopathogenic bacteria.
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Affiliation(s)
- Jaciel G Dos Santos
- Instituto Federal de Educação, Ciência e Tecnologia Goiano, Campus Rio Verde, Rio Verde, GO, Brazil
| | - Cassia C Fernandes
- Instituto Federal de Educação, Ciência e Tecnologia Goiano, Campus Rio Verde, Rio Verde, GO, Brazil
| | - Nagela B S Silva
- Laboratório de Ensaios Antimicrobiano (LEA), Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Gabriel G Calefi
- Laboratório de Ensaios Antimicrobiano (LEA), Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Carlos H G Martins
- Laboratório de Ensaios Antimicrobiano (LEA), Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Guilherme A Volpini
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Antônio E M Crotti
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | | | | | | | | | - Mayker L D Miranda
- Instituto Federal de Educação, Ciência e Tecnologia do Triângulo Mineiro, Campus Uberlândia Centro, MG, Brazil
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Teixeira SC, Rosini AM, de Souza G, Fajardo Martínez AF, Silva RJ, Ambrósio SR, Sola Veneziani RC, Bastos JK, Gomes Martins CH, Barbosa BF, Vieira Ferro EA. Polyalthic acid and oleoresin from Copaifera trapezifolia Hayne reduce Toxoplasma gondii growth in human villous explants, even triggering an anti-inflammatory profile. Exp Parasitol 2023; 250:108534. [PMID: 37100271 DOI: 10.1016/j.exppara.2023.108534] [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: 01/18/2023] [Revised: 04/11/2023] [Accepted: 04/19/2023] [Indexed: 04/28/2023]
Abstract
Due to the lack of efficient antiparasitic therapy and vaccines, as well as emerging resistance strains, congenital toxoplasmosis is still a public health issue worldwide. The present study aimed to assess the effects of an oleoresin obtained from the species Copaifera trapezifolia Hayne (CTO), and an isolated molecule found in the CTO, ent-polyalthic acid (ent-15,16-epoxy-8(17),13(16),14-labdatrien-19-oic acid) (named as PA), against T. gondii infection. We used human villous explants as an experimental model of human maternal-fetal interface. Uninfected and infected villous explants were exposed to the treatments; the parasite intracellular proliferation and the cytokine levels were measured. Also, T. gondii tachyzoites were pre-treated and the parasite proliferation was determined. Our findings showed that CTO and PA reduced efficiently the parasite growth with an irreversible action, but without causing toxicity to the villi. Also, treatments reduced the levels of IL-6, IL-8, MIF and TNF by villi, what configures a valuable treatment option for the maintenance of a pregnancy in an infectious context. In addition to a possible direct effect on parasites, our data suggest an alternative mechanism by which CTO and PA alter the villous explants environment and then impair parasite growth, since the pre-treatment of villi resulted in lower parasitic infection. Here, we highlighted PA as an interesting tool for the design of new anti-T. gondii compounds.
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Affiliation(s)
- Samuel Cota Teixeira
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - Alessandra Monteiro Rosini
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - Guilherme de Souza
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - Aryani Felixa Fajardo Martínez
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - Rafaela José Silva
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - Sergio Ricardo Ambrósio
- Nucleus of Research in Technological and Exact Sciences, University of Franca, Franca, SP, Brazil.
| | | | - Jairo Kenupp Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
| | - Carlos Henrique Gomes Martins
- Department of Microbiology, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - Bellisa Freitas Barbosa
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
| | - Eloisa Amália Vieira Ferro
- Laboratory of Immunophysiology of Reproduction, Institute of Biomedical Science, Federal University of Uberlândia, Uberlândia, MG, Brazil.
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dos Santos VRN, Motta JVDS, Frazão DR, Ferreira RDO, Souza-Monteiro D, Baia-da-Silva DC, Mendes PFS, Bittencourt LO, de Moura JDM, Lameira OA, Balbinot GDS, Collares FM, Rösing CK, Lima RR. Biological Activity of Copaiba in Damage to the Alveolar Bone in a Model of Periodontitis Induced in Rats. Molecules 2022; 27:molecules27196255. [PMID: 36234793 PMCID: PMC9572349 DOI: 10.3390/molecules27196255] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/27/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
Several studies have investigated the effects of natural products in the treatment of diseases. Traditional Amazonian populations commonly use copaiba due to its well-known anti-inflammatory, antibacterial, and healing properties. In this study, we aimed to investigate the effects of systemic administration of copaiba oleoresin (Copaifera reticulata Ducke) on ligature-induced periodontitis in rats. To do so, 21 adult rats were divided into three groups (n = 7 each): a control group, ligature-induced periodontitis group, and ligature-induced periodontitis group treated with copaiba oleoresin (200 mg/kg/day). The ligature remained from day 0 to 14, and the copaiba oleoresin was administered via oral gavage during the last seven days. On day 14, the animals were euthanized, and mandibles were collected for histopathological evaluation and microcomputed tomography analysis. Our data showed that the administration of copaiba considerably reduced the inflammatory profile. Moreover, copaiba oleoresin limited alveolar bone loss, increased trabecular thickness and bone-to-tissue volume ratio, and decreased the number of trabeculae compared with those of the untreated experimental periodontitis group. Our findings provide pioneering evidence that supports the potential of copaiba oleoresin in reducing periodontitis-induced alveolar bone damage in rats.
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Affiliation(s)
- Vinicius Ruan Neves dos Santos
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - João Victor da Silva Motta
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Deborah Ribeiro Frazão
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Railson de Oliveira Ferreira
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Deiweson Souza-Monteiro
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Daiane Claydes Baia-da-Silva
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Paulo Fernando Santos Mendes
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Leonardo Oliveira Bittencourt
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - João Daniel Mendonça de Moura
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Osmar Alves Lameira
- Laboratory of Biotechnology, Embrapa Amazônia Oriental, Belém 66075-110, PA, Brazil
| | - Gabriela de Souza Balbinot
- Dental Materials Laboratory, Faculty of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre 90040-060, RS, Brazil
| | - Fabrício Mezzomo Collares
- Dental Materials Laboratory, Faculty of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre 90040-060, RS, Brazil
| | - Cassiano Kuchenbecker Rösing
- Department of Periodontology, Faculty of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre 90040-060, RS, Brazil
| | - Rafael Rodrigues Lima
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Belém 66075-110, PA, Brazil
- Correspondence:
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Antibacterial Activity of Isobavachalcone (IBC) Is Associated with Membrane Disruption. MEMBRANES 2022; 12:membranes12030269. [PMID: 35323743 PMCID: PMC8950343 DOI: 10.3390/membranes12030269] [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: 11/06/2021] [Revised: 01/29/2022] [Accepted: 02/03/2022] [Indexed: 02/04/2023]
Abstract
Isobavachalcone (IBC) is a natural prenylated chalcone with a broad spectrum of pharmacological properties. In this work, we newly synthesized and investigated the antibacterial activity of IBC against Gram-positive, Gram-negative and mycobacterial species. IBC was active against Gram-positive bacteria, mainly against Methicillin-Susceptible Staphylococcus aureus (MSSA) and Methicillin-Resistant Staphylococcus aureus (MRSA), with minimum inhibitory concentration (MIC) values of 1.56 and 3.12 µg/mL, respectively. On the other hand, IBC was not able to act against Gram-negative species (MIC > 400 µg/mL). IBC displayed activity against mycobacterial species (MIC = 64 µg/mL), including Mycobacterium tuberculosis, Mycobacterium avium and Mycobacterium kansasii. IBC was able to inhibit more than 50% of MSSA and MRSA biofilm formation at 0.78 µg/mL. Its antibiofilm activity was similar to vancomycin, which was active at 0.74 µg/mL. In order to study the mechanism of the action by fluorescence microscopy, the propidium iodide (PI) and SYTO9 fluorophores indicated that IBC disrupted the membrane of Bacillus subtilis. Toxicity assays using human keratinocytes (HaCaT cell line) showed that IBC did not have the capacity to reduce the cell viability. These results suggested that IBC is a promising antibacterial agent with an elucidated mode of action and potential applications as an antibacterial drug and a medical device coating.
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