Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 82, Issue -, Pages 249-255Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2015.11.036
Keywords
Fucoidan; alpha-Glucosidase; In vitro and in vivo studies
Funding
- NSFC-Shandong Joint Fund for Marine Science Research Centers [U1406402]
- National Science & Technology Support Program of China [2013BAB01B02]
- program of NSFC-RFBR [81311120092]
- Special Fund for Marine Scientific Research in the Public Interest [201005024]
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The inhibition of alpha-glucosidase is an effective therapeutic approach for type 2 diabetes mellitus that involves decreasing postprandial hyperglycemia. In the present study, the a-glucosidase and a-amylase inhibitory effects of 11 fucoidans extracted from different brown seaweeds were evaluated. Although no significant alpha-amylase inhibition was observed, fucoidan from Fucus vesiculosus (FvF) showed the highest alpha-glucosidase inhibitory activity, with an IC50 value of 67.9 mu g/mL. In addition, FvF at a concentration of 200 mu g/mL displayed very mild cytotoxicity to IEC-6 cells as indicated by the MTT assay. An in vivo study indicated that FvF decreased the fasting blood glucose and hemoglobin A1c (HbA1c) levels of db/db mice, with minimal effect on their weight. Therefore, our present in vitro and in vivo studies demonstrated that FvF could be a promising a-glucosidase inhibitor for the treatment of type 2 diabetes mellitus. (C) 2015 Elsevier B.V. All rights reserved.
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