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The Effects of Guluronic Acid (G2013), a New Emerging Treatment, on Inflammatory Factors in Nonalcoholic Steatohepatitis Patients Under in Vitro Conditions Publisher Pubmed



Tahmasebi S1 ; Neishaboori H2 ; Jafari D3, 4 ; Faghihzadeh E5 ; Esmaeilzadeh A3, 4 ; Mirshafiey A1, 6
Authors
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Authors Affiliations
  1. 1. Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Internal Medicine, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
  3. 3. Zanjan Metabolic Diseases Research Center, Zanjan University of Medical Sciences, Zanjan, Iran
  4. 4. Immunotherapy Research and Technology Group, Zanjan University of Medical Sciences, Zanjan, Iran
  5. 5. Department of Epidemiology and Biostatics, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
  6. 6. Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran

Source: Immunopharmacology and Immunotoxicology Published:2021


Abstract

Background: Nonalcoholic Steatohepatitis (NASH) results from the accumulation of fatty acids in the liver. The elevated production of pro-inflammatory factors is the reason for the hyper inflammation in NASH. The α-L-Guluronic acid (G2013), a new member of NSAID family, is a plant-originated agent with immunomodulatory properties. The current study investigated the effects of G2013 on inflammatory factors in PBMCs of NASH patients. Methods: PBMCs of 14 NASH patients and 14 healthy controls were isolated and cultured. The patient’s cells were treated with low (5 µg/mL) and moderate (25 µg/mL) doses of G2013 alongside the diclofenac optimum dose (3 µg/mL). The expression and secretion levels of variables were assessed by real-time PCR and ELISA, respectively. Results: Findings indicated that the expression levels of TLR4 and NF-κB, as well as the secretion levels of TNF-α and IL-6 cytokines, were significantly elevated in NASH patients compared to healthy individuals. The expression levels of TLR4 and NF-κB were strikingly downregulated in treated cells of patients in both low and moderate doses of G2013. A considerable reduction was obtained in the secretion level of IL-6 using both low and moderate doses of G2013 and in the secretion level of TNF-α using the moderate dose of G2013. Conclusion: The results indicated that G2013 could meaningfully decrease the expression and secretion levels of evaluated factors (TLR4, NF-κB, TNF-α, and IL-6) in PMBCs of NASH cases. Since there is no effective treatment for NASH patients, we hope that G2013 would be a promising immunomodulatory agent in reducing inflammation and improvement of patients. © 2021 Informa UK Limited, trading as Taylor & Francis Group.
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