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Sulfated Polysaccharide from Digenea simplex Decreases Intestinal Inflammation in Rats

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Abstract

Sulfated polysaccharides derived from seaweeds have important biological activities. The aim of this work was to demonstrate the anti-inflammatory effect of a sulfated polysaccharide extracted from the seaweed Digenea simplex (Wulfen) C. Agardh 1822 on 2,4,6-trinitrobenzene sulfonic acid–induced colitis in rats. After inducing colitis, rats were euthanized, and the colon was excised to determine macroscopic lesion scores and wet weight and to histologically evaluate and quantify glutathione, malondialdehyde, myeloperoxidase, nitrate/nitrite, and cytokines. The polysaccharide, composed of β-d-galactose and 3,6-α-l-anhydrogalactose residues, reduced wet weight as well as macroscopic and microscopic lesion scores. It also reduced myeloperoxidase activity; reduced proinflammatory cytokines, malondialdehyde, and nitrate/nitrite levels; and preserved glutathione consumption in the colon. According to these results, we can infer that the sulfated polysaccharide derived from D. simplex has an anti-inflammatory effect on induced colitis in vivo.

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Acknowledgments

We thank the Federal University of Piauí for the support and structure provided.

Funding

The authors gratefully acknowledge the financial support from the National Counsel of Technological and Scientific Development (CNPq, Brazil) and Research Foundation from the State of Piauí (FAPEPI).

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Authors and Affiliations

Authors

Contributions

RDSB performed all tests related to extraction and characterization of polysaccharides; HPHRM, TVB, JSCJ, GJDJ, SGS, DAM, and JAB evaluated the action of the PLS during induced colitis and prepared the first draft of the manuscript; DFPV performed the histological analysis; ROS, JGP, JXM, PMGS, MHLPS, and ALPF carried out the biochemical assays; and ALRB and JSO wrote the final version of the manuscript.

Corresponding author

Correspondence to André Luiz dos R. Barbosa.

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Conflict of Interest

The authors declare that they have no conflict of interest.

Ethics Approval

This research has been approved under no. 023/15 in 2015 by the Ethics Committee of the Federal University of Piauí, Brazil.

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Monturil, H.P.H.R., de Brito, T.V., da Cruz Júnior, J.S. et al. Sulfated Polysaccharide from Digenea simplex Decreases Intestinal Inflammation in Rats. Rev. Bras. Farmacogn. 30, 388–396 (2020). https://doi.org/10.1007/s43450-020-00073-x

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  • DOI: https://doi.org/10.1007/s43450-020-00073-x

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