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Abstract Title:

Immunomodulatory activity of fucoidan against aspirin-induced gastric mucosal damage in rats.

Abstract Source:

Int Immunopharmacol. 2011 Feb ;11(2):157-63. Epub 2010 Nov 26. PMID: 21084063

Abstract Author(s):

Hanumantha Rao Balaji Raghavendran, Periasamy Srinivasan, Sathyanath Rekha

Article Affiliation:

Liver and Immunology Research Center, Daejeon Oriental Hospital of Daejeon University, 22-5 Daeheung-dong, Jung-gu, Daejeon, Republic of Korea. hbr_bala@yahoo.com

Abstract:

Gastric ulcers and related complications associated with the use of non-steroidal anti-inflammatory drugs (NSAIDs), such as aspirin, represent a major global health problem. In the present study, we investigate the immunological activity of fucoidan against aspirin-induced gastric mucosal damage in rats. Thirty-six rats were randomly divided into the following, normal (Carboxy methyl cellulose 0.05 %), aspirin (Asp-400mg/kg) treated, fucoidan alone (Fu-0.02 g/kg, daily for 14 days) and Fu+Asp. Cytokines, total nitrite and nitrate (NOx) analysis and tissue localization of Cyclooxygenase 1, 2 and epidermal growth factor receptor (EGFR) were done using Elisa and immunohistochemistry respectively. Histopathology of gastric tissue, collagen deposition was performed using Hematoxylin and Eosin and Masson's trichrome were performed. Treatment of rats with a single dose of aspirin (400mg/kg, orally) led to significant alterations in the levels of total nitrite and nitrate (NOx), interleukins (IL-4, 6, 10, 12), tumor necrosis factor (TNF-α), and interferon gamma (IFN-γ). Notably, collagen deposition in glandular tissue and localization of cyclooxygenase 1, 2, and epidermal growth factor were considerably affected in aspirin-treated rats. These severities were prevented to a significant extent in rats pretreated with fucoidan (0.02g/kg/day for two weeks orally). Our findings collectively indicate that the gastro-protective effect of fucoidan against aspirin-induced ulceration in rats is mediated through its immunomodulatory properties.

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Sayer Ji
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