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Title: Heterofucans from the brown seaweed Canistrocarpus cervicornis with anticoagulant and antioxidant activities
Authors: Camara, Rafael Barros Gomes
Costa, Leandro Silva
Fidelis, Gabriel Pereira
Nobre, Leonardo Thiago Duarte Barreto
Dantas-Santos, Nednaldo
Cordeiro, Sara Lima
Costa, Mariana Santana Santos Pereira
Alves, Luciana Guimaraes
Rocha, Hugo Alexandre de Oliveira
Keywords: Dictyota cervicornis;Fucoidan;Free radicals;Sulfated polysaccharides
Issue Date: 24-Jan-2011
Publisher: MDPI
Citation: CAMARA, Rafael Barros Gomes da; COSTA, Leandro Silva; FIDELIS, Gabriel Pereira; NOBRE, Leonardo Thiago Duarte Barreto; DANTAS-SANTOS, Nednaldo; CORDEIRO, Sara Lima; COSTA, Mariana Santana Santos Pereira; ALVES, Luciana Guimaraes; ROCHA, Hugo Alexandre de Oliveira. Heterofucans from the brown seaweed Canistrocarpus cervicornis with anticoagulant and antioxidant activities. Marine Drugs, [s. l.], v. 9, n. 1, p. 124-138, 24 jan. 2011. MDPI AG. Disponível em: Acesso em: 16 set. 2020.
Portuguese Abstract: Fucan is a term used to denominate a family of sulfated polysaccharides rich in sulfated L-fucose. We extracted six fucans from Canistrocarpus cervicornis by proteolytic digestion followed by sequential acetone precipitation. These heterofucans are composed mainly of fucose, glucuronic acid, galactose and sulfate. No polysaccharide was capable of prolonging prothrombin time (PT) at the concentration assayed. However, all polysaccharides prolonged activated partial thromboplastin time (aPTT). Four sulfated polysaccharides (CC-0.3/CC-0.5/CC-0.7/CC-1.0) doubled aPTT with only 0.1 mg/mL of plasma, only 1.25-fold less than Clexane®, a commercial low molecular weight heparin. Heterofucans exhibited total antioxidant capacity, low hydroxyl radical scavenging activity, good superoxide radical scavenging efficiency (except CC-1.0), and excellent ferrous chelating ability (except CC-0.3). These results clearly indicate the beneficial effect of C. cervicornis polysaccharides as anticoagulants and antioxidants. Further purification steps and additional studies on structural features as well as in vivo experiments are needed to test the viability of their use as therapeutic agents
ISSN: 1660-3397 (online)
Appears in Collections:CB - DBQ - Artigos publicados em periódicos

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