An anticoagulant proteoglycan from the marine green alga, Codium pugniformis |
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Authors: | Kiminori Matsubara Yasushi Matsuura Kanji Hori Keisuke Miyazawa |
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Institution: | (1) Department of Nutritional Science, Faculty of Health and Welfare Science, Okayama Prefectural University, 111 Kuboki, Soja, Okayama 719-1197, Japan;(2) Faculty of Applied Biological Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8528, Japan |
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Abstract: | An anticoagulant isolated from the marine green alga Codium pugniformis was composed mainly of glucose with minor amounts of arabinose and galactose. It was highly sulfated (326 μg mg-1 polysaccharide) and contained protein(52 μg mg-1 polysaccharide) and was thus a proteoglycan. The anticoagulant properties of the purified proteoglycan were compared with
those of heparin by studying the activated partial thromboplastin time (APTT), prothrombin time (PT) and thrombin time(TT)
using normal human plasma. The proteoglycan showed similar activities to heparin, but was weaker than heparin. On the other
hand, the proteoglycan did not affect PT even at the concentration at which APTT and TT were prolonged. The anticoagulation
mechanism of this proteoglycan was due to the direct inhibition of thrombin and the potentiation of antithrombin III.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | anticoagulant antithrombin Codium pugniformis proteoglycan sulfated polysaccharide |
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