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Title: Immunomodulatory effects and antimicrobial activity of heterofucans from Sargassum filipendula
Authors: Telles, Cinthia Beatrice Silva
Mendes-Aguiar, Carolina
Fidelis, Gabriel Pereira
Frasson, Amanda Piccoli
Pereira, Wogelsanger Oliveira
Scortecci, Katia Castanho
Camara, Rafael Barros Gomes
Nobre, Leonardo Thiago Duarte Barreto
Costa, Leandro Silva
Tasca, Tiana
Rocha, Hugo Alexandre de Oliveira
Keywords: Fucoidan;Trichomonas vaginalis;Antibiofilm;Nitric oxide
Issue Date: 18-Jul-2017
Publisher: Springer
Citation: TELLES, Cinthia Beatrice Silva; MENDES-AGUIAR, Carolina; FIDELIS, Gabriel Pereira; FRASSON, Amanda Piccoli; PEREIRA, Wogelsanger Oliveira; SCORTECCI, Katia Castanho; CAMARA, Rafael Barros Gomes; NOBRE, Leonardo Thiago Duarte Barreto; COSTA, Leandro Silva; TASCA, Tiana; ROCHA, Hugo Alexandre de Oliveira. Immunomodulatory effects and antimicrobial activity of heterofucans from Sargassum filipendula. Journal Of Applied Phycology, [s. l.], v. 30, n. 1, p. 569-578, 18 jul. 2017. Springer Science and Business Media LLC. Disponível em: Acesso em: 22 set. 2020.
Portuguese Abstract: Parasitic diseases are a human health problem mainly in low-income areas. The drugs available for the treatment of these diseases are far from satisfactory due to high costs, toxicity, and drug resistance. Sulfated polysaccharides are a complex group of bioactive polymers and can be obtained from seaweeds. The heterofucans from Sargassum filipendula (SF) present strong antiproliferative and antioxidant activities. However, their immunomodulatory and antimicrobial capacity have not been evaluated until now. In this study, five sulfated fucose-rich fractions were isolated (named SF0.5V, SF0.7V, SF1.0V, SF1.5V, and SF2.0V). The chemical composition showed slight differences among polysaccharides and, consequently, biological activity of these polymers. Three fractions (SF0.5V, SF0.7V, and SF1.0V) showed a strong immunomodulatory activity enhancing the release of nitric oxide (NO) by murine macrophages (RAW 264.7), though only SF0.5V was able to induce interleukin-6 (IL-6) and TNF-α release from RAW cells. The sugar to sulfate ratio was not correlated with these activities. Meanwhile, the contents of xylose (P = 0.98 for NO; P = 0.98 for IL-6; P = 0.96 for TNF-α) and glucuronic acid (P = 0.91 for NO; P = 0.9190 for IL-6; P = 0.79 for TNF-α) were strongly positively correlated. SF0.7V and SF1.0V inhibited biofilm formation by Klebsiella pneumoniae (4.2 and 6.8%, respectively), whereas SF0.5V showed inhibitory effect (~50%) on biofilm formation by Staphylococcus epidermidis. Furthermore, SF0.7V and SF1.0V showed high inhibition capacity on the survival of the protozoan Trichomonas vaginalis. The sugar to sulfate ratio was positively correlated (P = 0.60) with this activity. The results demonstrate the spectrum of action of these sulfated polysaccharides obtained from SF and show their potential as immunomodulatory and microbicidal agents
ISSN: 0921-8971 (print)
1573-5176 (online)
Appears in Collections:CB - DBG - Artigos publicados em periódicos
CB - DBQ - Artigos publicados em periódicos
EMCM - Artigos publicados em periódicos

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