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Abstract ▼ AI-Helper

To select potential inhibitors of platelet aggregation from large numbers of crude plant extracts, the modified thin smear method for the anti-platelet aggregating activity using platelet rich plasma was further modified by direct observation under a light microscope without staining the smear. The ...

To select potential inhibitors of platelet aggregation from large numbers of crude plant extracts, the modified thin smear method for the anti-platelet aggregating activity using platelet rich plasma was further modified by direct observation under a light microscope without staining the smear. The activities determined by the method were coincided with those by the electrical impedence method using whole blood, when ADP or collagen was employed as the aggregating agent. Among 130 varieties of edible and herbal plants which collected from markets or experimental farms of agricultural research institutes, those showed the anti-platelet aggregating activities were selected by testing the crude methanol extracts: Aster scaber, Aster tataricus, Ligularia stenocephala, Platycodon glaucum Allium victorialis, Allium oderum, Moros bombycis, Portulaco oleracea, Aamthopanax sessiliflorus and Rosa davurica. However, some of them activated the platelet aggregation under the same assay conditions: Pimpinella brachycarpa, Hosta plantaginea, Capsella bursapastoris, Fagopyrm esculentum, Prunus mume, Rubus coreanus and Limaria japonica. In addition, those revealed the antioxidant activities were selected by measuring the abilities to scavenge superoxide anion radicals: Pteridium aquilinum, Aster scaber, Ligularia fischeri, Chrysanthemum zawadskii, Artemisia capipparis, Cirsium setidens, Commelina communis and Capsella bursapastoris among edible plants.