title: Antibacterial and ulcer healing effects of organoselenium compounds in naproxen induced and Helicobacter pylori infected Wistar rat model.
abstract: Aim of the present study was to evaluate in vitro toxicity and in vivo antibacterial, anti-inflammatory, antiulcer, and antioxidant activities of two organoselenium compounds, selenocystine (SeCys) and ebselen (Ebs). The study was conducted in experimentally induced ulcers in rodent model infected with Helicobacter pylori (H. pylori). In vitro toxicological studies on normal splenic lymphocytes revealed that SeCys and Ebs were non-toxic to the cells even at 100 μM concentration. Antibacterial activity was observed at 500 μg/mL concentration of either of the compounds against H. pylori. In vivo studies after treatment with SeCys and Ebs (500 μg/kg/day) resulted in significant reduction in ROS production and inhibition of lipid peroxidation in gastric tissue. The antioxidant and anti-inflammatory activities of both the compounds were also confirmed by their ability to lower GSH reduction, to induce the expression of antioxidant genes such as GPx-4, and MnSOD and to suppress inflammatory genes namely COX-2, TNF-α and TGF-β. In addition, the immunomodulatory activity of both the compounds was evident by enhance of the CD4 levels and maintenance of the IgG, IL-6 and IL-10 levels. Persistent treatment (500 μg/kg, for 28 days) with both the compounds showed considerable (p<0.05) ulcer healing property supporting its role in gastro protection. In conclusion, the results of our study suggest that both SeCys and Ebs possess broad spectrum of activities without any potential toxicity.
authors.affiliation: Department of Physiology, Deccan College of Medical Sciences, Hyderabad, India.
authors.forename: B Santhosh
authors.initials: BS
authors.lastname: Kumar
authors.forename: Santosh K
authors.initials: SK
authors.lastname: Tiwari
authors.forename: R
authors.initials: R
authors.lastname: Saikant
authors.forename: G
authors.initials: G
authors.lastname: Manoj
authors.forename: Amit
authors.initials: A
authors.lastname: Kunwar
authors.forename: G
authors.initials: G
authors.lastname: Sivaram
authors.forename: Zakia
authors.initials: Z
authors.lastname: Abid
authors.forename: Adeel
authors.initials: A
authors.lastname: Ahmad
authors.forename: K Indira
authors.initials: KI
authors.lastname: Priyadarsini
authors.forename: Aleem A
authors.initials: AA
authors.lastname: Khan
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D000897:Anti-Ulcer Agents / Q000627:therapeutic use*; D000975:Antioxidants / Q000378:metabolism; D015496:CD4-Positive T-Lymphocytes / Q000378:metabolism; D018414:CD8-Positive T-Lymphocytes / Q000378:metabolism; D016481:Helicobacter Infections / Q000188:drug therapy*; D016480:Helicobacter pylori / Q000187:drug effects / Q000472:pathogenicity; D007074:Immunoglobulin G / Q000097:blood; D016753:Interleukin-10 / Q000097:blood; D015850:Interleukin-6 / Q000097:blood; D009288:Naproxen / Q000633:toxicity*; D016566:Organoselenium Compounds / Q000627:therapeutic use*; D018384:Oxidative Stress / Q000187:drug effects / Q000235:genetics; D051381:Rats; D017208:Rats, Wistar; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013276:Stomach Ulcer / Q000139:chemically induced / Q000188:drug therapy*; D016212:Transforming Growth Factor beta / Q000235:genetics; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics
chemical_list: D000900:Anti-Bacterial Agents; D000897:Anti-Ulcer Agents; D000975:Antioxidants; D007074:Immunoglobulin G; D015850:Interleukin-6; D016566:Organoselenium Compounds; D016212:Transforming Growth Factor beta; D014409:Tumor Necrosis Factor-alpha; D016753:Interleukin-10; D009288:Naproxen