| Literature DB >> 32387607 |
Francisco Diêgo da Silva Chagas1, Glauber Cruz Lima2, Valesca Ingrid Nobre Dos Santos1, Luís Eduardo Castanheira Costa1, Willer Malta de Sousa1, Venícios Gonçalves Sombra3, Diego Freitas de Araújo4, Francisco Clark Nogueira Barros5, Eliane Marinho-Soriano6, Judith Pessoa de Andrade Feitosa3, Regina Célia Monteiro de Paula3, Maria Gonçalves Pereira4, Ana Lúcia Ponte Freitas1.
Abstract
A sulfated polysaccharide from the red algae Gelidiella acerosa (GaSP) was obtained through enzymatic extraction and subjected to chemical characterization by HPSEC, elemental microanalysis, FT-IR and NMR spectroscopies. The GaSP anticoagulant activity was investigated through APTT and PT tests and platelet aggregation assessed by turbidimetry. The antithrombotic and hemorrhagic activities were evaluated by venous thrombosis and hemorrhagic tendency models, respectively. FT-IR and NMR demonstrated that GaSP is a sulfated agaran. HPSEC and elemental microanalysis revealed a peak molar mass of 284.8 kDa and a degree of sulfation of 0.63, respectively. This molecule prolonged the coagulation time in 2.1 times and inhibited the platelet aggregation by 45%. Furthermore, it showed significant dose-dependent antithrombotic effect of 40%, 64% and 80% at 0.1, 0.5 and 1 mg/kg, respectively, without hemorrhage. These results suggest that GaSP has promising antithrombotic.Entities:
Keywords: Antithrombotic and antiplatelet activities; Chemical structure; Sulfated polysaccharide
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Year: 2020 PMID： 32387607 DOI： 10.1016/j.ijbiomac.2020.05.012
Source DB: PubMed Journal: Int J Biol Macromol ISSN： 0141-8130 Impact factor: 6.953