学術雑誌論文 Macrocarpal C isolated from Eucalyptus globulus inhibits dipeptidyl peptidase 4 in an aggregated form

Kato, Eisuke  ,  Kawakami, Kazuhiro  ,  Kawabata, Jun

33 ( 1 )  , pp.106 - 109 , 2017-11-17 , Taylor & Francis
ISSN:1475-63661475-6374
内容記述
Dipeptidyl peptidase 4 (DPP-4) inhibitors are used for the treatment of type-2 diabetes mellitus. Various synthetic inhibitors have been developed to date, and plants containing natural DPP-4 inhibitors have also been identified. Here, 13 plant samples were tested for their DPP-4 inhibitory activity. Macrocarpals A-C were isolated from Eucalyptus globulus through activity-guided fractionation and shown to be DPP-4 inhibitors. Of these, macrocarpal C showed the highest inhibitory activity, demonstrating an inhibition curve characterised by a pronounced increase in activity within a narrow concentration range. Evaluation of macrocarpal C solution by turbidity, nuclear magnetic resonance spectroscopy and mass spectrometry indicated its aggregation, which may explain the characteristics of the inhibition curve. These findings will be valuable for further study of potential small molecule DPP-4 inhibitors.
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https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/68146/1/Macrocarpal%20C%20isolated%20from%20Eucalyptus%20globulus%20inhibits%20dipeptidyl%20peptidase%204%20in%20an%20aggregated%20form.pdf

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