Journal
JOURNAL OF ETHNOPHARMACOLOGY
Volume 136, Issue 3, Pages 525-531Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.jep.2010.06.013
Keywords
Reunion Island; Mauritius Island; Malaria; Inflammation; Cancer; Medicinal plants
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Funding
- Belgian National Fund for Scientific Research (FNRS)
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proliferative activity were investigated in vitro to evaluate the bioactive potential of the traditional pharmacopoeia of the Mascarene Archipelago, which is known for its biodiversity and for the richness of its endemic flora. Materials and methods: A total of 45 methanol (MeOH) and dichloromethane (DCM) extracts were prepared from 19 plant species collected on Reunion and Mauritius Islands. Ninety-six-well microplate assays were performed on chloroquine sensitive Plasmodium falciparum 3D7 strain, on LPS-stimulated Raw 264.7 murine macrophages and on A-549, DLD-1 and WS1 human cells. Activity was evaluated through spectrophotometric methods. Results: Activity was attributed to plant extracts expressing IC(50) < 50 mu g/ml for antiplasmodial response, IC(50) < 100 mu g/ml for cytotoxicity, and IC(50) < 130 mu 4/ml for anti-inflammatory reaction. The majority of the extracts tested (69%) exhibited potency in at least one of these three types of activity. This is the first report describing promising antiplasmodial activity (IC(50) < 15 mu g/ml) for Psiadia dentata DCM extract and Terminalia bentzoe MeOH bark extract. NO inhibition assay revealed seven interesting plants, described for the first time as anti-inflammatory: Aphloia theiforrnis, Buddleja salviifolia, Eupatorium riparium, Hiptage benghalensis, Psiadia arguta, Psiadia dentata, and Scutia commersonii. Finally, anti-proliferative activity was observed for two endemic species, Geniostoma borbonicum and Nuxia verticillata. Conclusion: Using the criterion of endemism as part of the criteria for traditional medicinal use raises the chances of finding original active principles. In our case, 86% of the endemic plants tested displayed pharmacological interest. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
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