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Senes-Lopes TFD, Luz JRDD, Guterres ZDR, Barbosa EA, Batista D, Galdino OA, Ururahy MAG, Gomes Dos Santos EC, López JA, Araujo-Silva G, Almeida MDG. Pseudobombax parvifolium Hydroalcoholic Bark Extract: Chemical Characterisation and Cytotoxic, Mutagenic, and Preclinical Aspects Associated with a Protective Effect on Oxidative Stress. Metabolites 2023; 13:748. [PMID: 37367906 DOI: 10.3390/metabo13060748] [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: 04/30/2023] [Revised: 06/04/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023] Open
Abstract
Plants have long been used in traditional medicine to treat illnesses. Nevertheless, their chemical diversity requires studies to establish the extract dosage and its safe use. Pseudobombax parvifolium, an endemic species of the Brazilian Caatinga biome, is commonly used in folk medicine, due to its anti-inflammatory properties related to cellular oxidative stress; however, its biological properties have scarcely been studied. In this study, we chemically characterized the P. parvifolium hydroalcoholic bark extract (EBHE) and evaluated its cytotoxic, mutagenic, and preclinical aspects, as well as its antioxidant effect. Our phytochemical analysis revealed a significative total polyphenol content and identified loliolide for the first time in this species. Cytotoxicity, mutagenicity, and acute oral and repeated dose indicated no toxic effects on cell culture, Drosophila melanogaster, and Wistar rat exposure to different EBHE concentrations, respectively. Furthermore, we observed a significant decrease in lipid peroxidation and a mild hypoglycemic and hypolipidemic effect with repeated oral dosing of EBHE. Although there were no significant changes in glutathione content, we did observe a significant increase in superoxide dismutase at a dose of 400 mg/kg and in glutathione peroxidase at doses of 100, 200, and 400 mg/kg. These findings suggest that EBHE has potential as a source of bioactive molecules, and it can be used safely in traditional medicine and in the development of herbal medicines for application in the public health system.
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Affiliation(s)
- Tiago Felipe de Senes-Lopes
- Postgraduate Program in Health Sciences, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
- Multidisciplinary Research Laboratory, Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
- Laboratory of Cytogenetics and Mutagenesis, State University of Mato Grosso do Sul, Mundo Novo 79980-000, MS, Brazil
| | - Jefferson Romáryo Duarte da Luz
- Multidisciplinary Research Laboratory, Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
- Organic Chemistry and Biochemistry Laboratory, State University of Amapá, Macapá 68900-070, AP, Brazil
| | - Zaira da Rosa Guterres
- Laboratory of Cytogenetics and Mutagenesis, State University of Mato Grosso do Sul, Mundo Novo 79980-000, MS, Brazil
| | - Eder A Barbosa
- Laboratory of Synthesis and Analysis of Biomolecules, Institute of Chemistry, University Campus Darcy Ribeiro, University of Brasília, Brasília 70910-900, DF, Brazil
| | - Débora Batista
- Multidisciplinary Research Laboratory, Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
| | - Ony Araújo Galdino
- Postgraduate Program in Health Sciences, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
| | - Marcela Abbott Galvão Ururahy
- Postgraduate Program in Pharmaceutical Sciences, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
| | - Elizabeth Cristina Gomes Dos Santos
- Multidisciplinary Research Laboratory, Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
| | - Jorge A López
- Multidisciplinary Research Laboratory, Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
| | - Gabriel Araujo-Silva
- Organic Chemistry and Biochemistry Laboratory, State University of Amapá, Macapá 68900-070, AP, Brazil
| | - Maria das Graças Almeida
- Postgraduate Program in Health Sciences, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
- Multidisciplinary Research Laboratory, Department of Clinical and Toxicological Analysis, Health Sciences Center, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
- Postgraduate Program in Pharmaceutical Sciences, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal 59012-570, RN, Brazil
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Immobilization of Laccase on Hybrid Super-Structured Nanomaterials for the Decolorization of Phenolic Dyes. Processes (Basel) 2022. [DOI: 10.3390/pr10020233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In the present work, hybrid super-structured nanomaterials were synthesized by the combination of smectite nanoclays with various carbon-based nanomaterials (graphene oxide, carbon nanotubes and adamantylamine) and were used as nanosupports for the covalent and non-covalent immobilization of laccase from Trametes versicolor (TvL). TvL was successfully immobilized on these hybrid nanomaterials, achieving high immobilization yields (up to 85%), while its conformation remained unaltered upon immobilization. The apparent kinetic constants Vmax and Km of the immobilized enzymes strongly depended on the immobilization procedure and the composition of hybrid nanomaterials. Immobilized TvL preserved up to 50% of its initial activity after 24 h of incubation at 60 °C, while free enzyme was totally deactivated. The TvL-hybrid nanomaterials bioconjugates were efficiently applied for the degradation of various synthetic dyes, exhibiting excellent decolorization capacity, as well as high reusability (up to 11 successive catalytic cycles), providing insights into the use of these bionanoconjugates on applications with environmental, and industrial interest.
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