| Antimutagenic activity of two medicinal phytoextracts in somatic cells of Drosophila melanogaster. | |
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MedLine Citation:
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PMID: 21391834 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Context and Objective: We used the wing somatic assay in Drosophila melanogaster to test the hypothesis that two phytoextracts from Cecropia obtusifolia Bertol (Cecropiaceae) and Equisetum myriochaetum Schlecht. et Cham (Equisetaceae), which are used in folk medicine to treat type 2 diabetes mellitus, could detoxify the mutagen hydrogen peroxide. Materials and methods: Third instar larvae from standard (ST) and high-bioactivation (HB) crosses were chronically exposed to different concentrations of the phytoextracts. Hydrogen peroxide was used to induce oxidative stress and was chronically tested in both crosses. Catalase activity was measured in larvae of both strains 48 h after treatment with hydrogen peroxide. A pretreatment protocol was devised to test the antimutagenic potency of the medicinal extracts. Results: The present study showed that neither of the phytoextracts were genotoxic in Drosophila. Interestingly, the antioxidant enzyme activity levels were different between the larvae. Hydrogen peroxide resulted in a significant genotoxic effect in the ST cross, whereas a detoxification of hydrogen peroxide was found in the HB cross. Thus, catalase was stimulated in the HB cross, which was indicative of a cellular defense mechanism mounted against a xenobiotic hazard. We found that the percentage of inhibition of spots produced by E. myriochaetum was much higher than that induced by Cecropia obtusifolia. Discussion and conclusions: These results are in agreement with the uses of these phytoextracts in traditional medicine. Indeed, the lack of genotoxicity and the antimutagenic activity observed for both phytoextracts validates their use as a therapeutic modality to treat diabetic patients. Moreover, these extracts are suitable for consumption as teas and/or phytomedicines. |
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Authors:
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América Nitxin Castañeda Sortibrán; María Guadalupe Ordaz Téllez; Adolfo Andrade-Cetto; Claudia Segal Kischinevzky; Rosario Rodríguez-Arnaiz |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-11 |
Journal Detail:
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Title: Pharmaceutical biology Volume: - ISSN: 1744-5116 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9812552 Medline TA: Pharm Biol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Laboratorio de Genética, Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Coyoacán, México, D.F. México. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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