title: The effect of low or high molecular weight oat beta-glucans on the inflammatory and oxidative stress status in the colon of rats with LPS-induced enteritis.
abstract: OBJECTIVE
  The aim of the study was to investigate the protective effect of low and high molecular weight beta-glucans on the chosen immunological parameters, markers of antioxidative potential in rats' colon tissue, the number of lactic acid bacteria (LAB) and the concentration of short-chain fatty acids (SCFA) in rats' faeces.
  
  
  METHODS
  The experiment was carried out on 72 8-week old male Sprague-Dawley rats: control (n = 36) and experimental (n = 36). In half of the animals from each group enteritis was induced by LPS (10 mg kg(-1)). Rats from the experimental group were divided into two groups receiving high (GI) or low (GII) molecular weight beta-glucans for 6 consecutive weeks.
  
  
  RESULTS
  LPS evoked enteritis in all the treated animals, manifested by changes in the levels of IL-10, IL-12 and TNF-alpha, as well as in the number of intraepithelial lymphocytes (IELs) and lamina propria lymphocytes (LPLs) in the colon tissue. Dietary supplementation with beta-glucans following LPS treatment partially reversed this effect. The changes in SCFA concentration were noted, indicating an improvement of the fermentation process in the colon. This effect coincided with an increased number of LAB, pointing at the prebiotic properties of beta-glucans. The positive influence of beta-glucans was also manifested by the improved values of antioxidative potential markers (TAS, SOD, GR and GPx activity, TBARS concentration), noted especially in rats with LPS-induced enteritis. This influence was more pronounced in the case of low molecular weight oat beta-glucan (GII).
  
  
  CONCLUSIONS
  The present study showed a positive effect of beta-glucans, especially the low molecular weight form, on the colon tissue of healthy rats, as well as animals with LPS-induced enteritis.
authors.affiliation: Division of Dietetics, Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, 02-776 Warsaw, Poland. jacek_wilczak@sggw.pl.
authors.forename: Jacek
authors.initials: J
authors.lastname: Wilczak
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Błaszczyk
authors.forename: Dariusz
authors.initials: D
authors.lastname: Kamola
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Gajewska
authors.forename: Joanna Paulina
authors.initials: JP
authors.lastname: Harasym
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Jałosińska
authors.forename: Sylwia
authors.initials: S
authors.lastname: Gudej
authors.forename: Dominika
authors.initials: D
authors.lastname: Suchecka
authors.forename: Michał
authors.initials: M
authors.lastname: Oczkowski
authors.forename: Joanna
authors.initials: J
authors.lastname: Gromadzka-Ostrowska
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000008:administration & dosage; D018554:Avena / Q000737:chemistry*; D003106:Colon / Q000187:drug effects* / Q000378:metabolism / Q000382:microbiology; D004751:Enteritis / Q000188:drug therapy*; D005232:Fatty Acids, Volatile / Q000378:metabolism; D005243:Feces / Q000382:microbiology; D005285:Fermentation; D000069196:Gastrointestinal Microbiome / Q000187:drug effects; D007249:Inflammation / Q000188:drug therapy; D016753:Interleukin-10 / Q000097:blood; D018664:Interleukin-12 / Q000097:blood; D007777:Lactobacillaceae / Q000187:drug effects; D008070:Lipopolysaccharides / Q000009:adverse effects; D008297:Male; D008970:Molecular Weight; D009092:Mucous Membrane / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D056692:Prebiotics / Q000008:administration & dosage; D051381:Rats; D017207:Rats, Sprague-Dawley; D014409:Tumor Necrosis Factor-alpha / Q000097:blood; D047071:beta-Glucans / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D005232:Fatty Acids, Volatile; D008070:Lipopolysaccharides; D056692:Prebiotics; D014409:Tumor Necrosis Factor-alpha; D047071:beta-Glucans; D016753:Interleukin-10; D018664:Interleukin-12; C067858:beta-glucan, (1-3)(1-4)-