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de Oliveira BEG, Maia FLM, Massimino LC, Garcia CF, Plepis AMDG, Martins VDCA, Reis CHB, Silva VR, Bezerra AA, Pauris CC, Buchaim DV, Silva YBE, Buchaim RL, da Cunha MR. Use of Plant Extracts in Polymeric Scaffolds in the Regeneration of Mandibular Injuries. Pharmaceutics 2024; 16:491. [PMID: 38675152 PMCID: PMC11053713 DOI: 10.3390/pharmaceutics16040491] [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: 03/06/2024] [Revised: 03/25/2024] [Accepted: 03/31/2024] [Indexed: 04/28/2024] Open
Abstract
Severe loss of bone mass may require grafting, and, among the alternatives available, there are natural biomaterials that can act as scaffolds for the cell growth necessary for tissue regeneration. Collagen and elastin polymers are a good alternative due to their biomimetic properties of bone tissue, and their characteristics can be improved with the addition of polysaccharides such as chitosan and bioactive compounds such as jatoba resin and pomegranate extract due to their antigenic actions. The aim of this experimental protocol was to evaluate bone neoformation in experimentally made defects in the mandible of rats using polymeric scaffolds with plant extracts added. Thirty rats were divided into group 1, with a mandibular defect filled with a clot from the lesion and no graft implant (G1-C, n = 10); group 2, filled with collagen/chitosan/jatoba resin scaffolds (G2-CCJ, n = 10); and group 3, with collagen/nanohydroxyapatite/elastin/pomegranate extract scaffolds (G3-CHER, n = 10). Six weeks after surgery, the animals were euthanized and samples from the surgical areas were submitted to macroscopic, radiological, histological, and morphometric analysis of the mandibular lesion repair process. The results showed no inflammatory infiltrates in the surgical area, indicating good acceptance of the scaffolds in the microenvironment of the host area. In the control group (G1), there was a predominance of reactive connective tissue, while in the grafted groups (G2 and G3), there was bone formation from the margins of the lesion, but it was still insufficient for total bone repair of the defect within the experimental period standardized in this study. The histomorphometric analysis showed that the mean percentage of bone volume formed in the surgical area of groups G1, G2, and G3 was 17.17 ± 2.68, 27.45 ± 1.65, and 34.07 ± 0.64 (mean ± standard deviation), respectively. It can be concluded that these scaffolds with plant extracts added can be a viable alternative for bone repair, as they are easily manipulated, have a low production cost, and stimulate the formation of new bone by osteoconduction.
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Affiliation(s)
| | | | - Lívia Contini Massimino
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, Brazil; (L.C.M.); (A.M.d.G.P.); (M.R.d.C.)
| | - Claudio Fernandes Garcia
- São Carlos Institute of Chemistry, University of São Paulo, USP, São Carlos 13566-590, Brazil; (C.F.G.); (V.d.C.A.M.)
| | - Ana Maria de Guzzi Plepis
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, Brazil; (L.C.M.); (A.M.d.G.P.); (M.R.d.C.)
- São Carlos Institute of Chemistry, University of São Paulo, USP, São Carlos 13566-590, Brazil; (C.F.G.); (V.d.C.A.M.)
| | | | - Carlos Henrique Bertoni Reis
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Marília 17525-902, Brazil; (C.H.B.R.); (D.V.B.)
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, Brazil
| | - Vinícius Rodrigues Silva
- Department of Human Anatomy, University of San Francisco (USF), Bragança Paulista 12916-900, Brazil;
| | - Andre Alves Bezerra
- Orthopedics and Traumatology Sector, Faculty of Medicine of Jundiaí, Jundiaí 13202-550, Brazil; (B.E.G.d.O.)
| | - Carolina Chen Pauris
- Postgraduate Program in Health Sciences, Faculty of Medicine of Jundiaí, Jundiaí 13202-550, Brazil; (C.C.P.); (Y.B.e.S.)
| | - Daniela Vieira Buchaim
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Marília 17525-902, Brazil; (C.H.B.R.); (D.V.B.)
- Graduate Program in Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), São Paulo 05508-270, Brazil
- Medical School, University Center of Adamantina (UNIFAI), Adamantina 17800-000, Brazil
| | - Yggor Biloria e Silva
- Postgraduate Program in Health Sciences, Faculty of Medicine of Jundiaí, Jundiaí 13202-550, Brazil; (C.C.P.); (Y.B.e.S.)
| | - Rogerio Leone Buchaim
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo (FOB/USP), Bauru 17012-901, Brazil
- Graduate Program in Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Science (FMVZ), University of São Paulo (USP), São Paulo 05508-270, Brazil
| | - Marcelo Rodrigues da Cunha
- Interunit Postgraduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo (USP), São Carlos 13566-590, Brazil; (L.C.M.); (A.M.d.G.P.); (M.R.d.C.)
- Postgraduate Program in Health Sciences, Faculty of Medicine of Jundiaí, Jundiaí 13202-550, Brazil; (C.C.P.); (Y.B.e.S.)
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Carneiro Lobo LA, Alves Santos P, de Sousa JT, Picada JN, Bianchi SE, Bassani VL, da Silva FC, Ethur EM, Goettert MI, Pereira P. Toxicological profile of the Hymenaea courbaril stem bark hydroalcoholic extract using in vitro bioassays and an alternative in vivo Caenorhabditis elegans model. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:678-695. [PMID: 37482814 DOI: 10.1080/15287394.2023.2237069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Hymenaea genus has been used in folk medicine in Brazil, but few studies investigated its toxicity profile. Thus, the aim of this study was to determine toxicological parameters of Hymenaea courbaril stem bark hydroalcoholic extract by utilizing three cell lines including murine macrophages (RAW 264.7), mouse fibroblast cells (L929) and human lung fibroblast (MRC-5), as well as Salmonella/microsome assay, and in vivo Caenorhabditis elegans model. The predominant detected phytoconstituents in the extract were coumarins, flavonoids, phenolics, tannins and saponins and by HPLC analysis, astilbin (AST) was found to be the main component. The DPPH assay demonstrated that H. courbaril hydroalcoholic extract exhibited potent antioxidant activity, with an IC50 of 3.12 μg/ml. The extract at concentrations of 400 and 800 μg/ml decreased cell viability 48 hr after treatment in L929 and MRC-5 cell lines. In the Raw 264.7 strain, just the highest concentration (800 μg/ml) lowered cell viability within 48 hr following exposure. The concentration of 100 μg/ml did not markedly affect cell viability in the trypan blue assay. In the alkaline comet assay the extract was found to be non-genotoxic. In the Ames test, the extract exhibited low mutagenic potential without metabolic activation, since only the highest concentrations produced an effect. H. courbaril extract only affected the survival of C. elegans at concentrations of 800 and 1600 μl/ml. These findings demonstrate that H. courbaril extract appears to exert low toxicity as evidenced in vitro and mutagenicity assays; however, the biological relevance of the response of C. elegans survival to safety assessments needs further studies.
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Affiliation(s)
- Larissa Aline Carneiro Lobo
- Laboratory of Neuropharmacology and Preclinical Toxicology, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | - Peterson Alves Santos
- Laboratory of Neuropharmacology and Preclinical Toxicology, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | - Jayne Torres de Sousa
- Laboratory of Genetic Toxicology, Postgraduate Program in Molecular and Cell Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Jaqueline Nascimento Picada
- Laboratory of Genetic Toxicology, Postgraduate Program in Molecular and Cell Biology Applied to Health, Lutheran University of Brazil (ULBRA), Canoas, RS, Brazil
| | - Sara Elis Bianchi
- Galenic Development Laboratory, Graduate in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | - Valquiria Linck Bassani
- Galenic Development Laboratory, Graduate in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
| | | | - Eduardo Miranda Ethur
- Postgraduate Program in Biotechnology and Post Graduate Program in Environment and Development, University of Vale Do Taquari (Univates), Lajeado, RS - Brazil
| | - Márcia Inês Goettert
- Postgraduate Program in Biotechnology and Post Graduate Program in Environment and Development, University of Vale Do Taquari (Univates), Lajeado, RS - Brazil
| | - Patrícia Pereira
- Laboratory of Neuropharmacology and Preclinical Toxicology, Federal University of Rio Grande Do Sul, Porto Alegre, RS - Brazil
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