Pharmacological potential of sulfated polygalactopyranosyl-fucopyranan from the brown seaweed Sargassum wightii

Anusree, M and Chakraborty, Kajal (2018) Pharmacological potential of sulfated polygalactopyranosyl-fucopyranan from the brown seaweed Sargassum wightii. Journal of Applied Phycology, 30 (3). pp. 1971-1988.

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Kajal Chakraborty_2018Journal of Applied Phycology_Pharmacological potential of sulfated polygalactopyranosyl-fucopyranan from the brown seaweed Sargassum wightii.pdf
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Official URL: https://link.springer.com/article/10.1007/s10811-0...
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    Abstract

    A sulfated polygalactopyranosyl-fucopyranan characterized as ∙∙∙∙→1)-α-Fucp-(2SO3 −)-(3→1)-α-Fucp-(2SO3 −)-(4→1)-β- Galp-(4→1)-β-Galp-(4→∙∙∙∙ was isolated from the brown seaweed Sargassum wightii and evaluated for pharmacological properties with reference to antioxidant, anti-inflammatory, antidiabetic, and antihypertensive activities using different in vitro models. The sulfated polygalactopyranosyl-fucopyranan displayed potential di(phenyl)-(2,4,6-trinitrophenyl) iminoazanium (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS+) radical scavenging, and Fe2+ ion chelating activities (IC90 ~ 1 mg mL−1). The studied polysaccharide displayed higher anti-inflammatory selectivity towards inducive proinflammatory enzyme cyclooxygenase-2 (COX-2, IC90 1.13 mg mL−1) than constitutive cyclooxygenase-1 (COX-1, IC90 > 1.20 mg mL−1) resulting in greater selectivity index (IC90 COX-2/COX-1, 0.93) than synthetic non-steroidal anti-inflammatory drug aspirin (0.88) and also showed potent lipoxygenase-5 inhibition (LOX-5, IC90 1.02 mg mL−1). The studied polysaccharide displayed significantly higher (P < 0.05) antidiabetic properties compared to the antidiabetic agents acarbose and diprotein-A in terms of α-amylase (IC90 0.93 mg mL−1), α-glucosidase (IC90 1.48 mg mL−1), and dipeptidyl peptidase-4 (IC90 0.11 mg mL−1) enzyme inhibition potentials. The sulfated polygalactopyranosyl-fucopyranan also displayed potential antihypertensive activity with reference to angiotensin-converting enzyme-I inhibitory activity (IC90 0.2 mg mL−1). Extensive spectroscopic experiments in conjugation with monosaccharide compositional analysis attributed (1→3)-linked α-fucopyranose units in the polygalactofucan chain with C-2 sulfation and C-4 substituents as O-acetyl/O-methyl/(1→4)-linked β-galactopyranose. The previously undescribed sulfated polygalactopyranosyl-fucopyranan could function as a potential pharmacophore lead against inflammation, type 2 diabetics, hypertension and utilization as natural antioxidant.

    Item Type: Article
    Uncontrolled Keywords: Phaeophyceae; Sargassum wightii; Sulfated polygalactopyranosyl-fucopyranan; Anti-inflammatory; Antidiabetic; Angiotensin-converting enzyme
    Subjects: Biochemistry > Bioactive compounds
    Algae > Seaweed
    Divisions: CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI > CMFRI-Kochi > Marine Biotechnology
    CMFRI-Kochi > Marine Biotechnology
    Subject Area > CMFRI-Kochi > Marine Biotechnology
    Depositing User: Arun Surendran
    Date Deposited: 13 Jun 2018 08:21
    Last Modified: 13 Jun 2018 08:21
    URI: http://eprints.cmfri.org.in/id/eprint/12850

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