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- Ahl, DavidUppsala universitet,Integrativ Fysiologi (author)
Lactobacillus reuteri increases mucus thickness and ameliorates dextran sulphate sodium-induced colitis in mice
- Article/chapterEnglish2016
Publisher, publication year, extent ...
- 2016-04-30
- Wiley,2016
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:uu-301010
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-301010URI
- https://doi.org/10.1111/apha.12695DOI
- https://res.slu.se/id/publ/82950URI
Supplementary language notes
- Language:English
- Summary in:English
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- Aim: The aim of this study was to investigate whether two Lactobacillus reuteri strains (rat-derived R2LC and human-derived ATCC PTA 4659 (4659)) could protect mice against colitis, as well as delineate the mechanisms behind this protection.Methods: Mice were given L.reuteri R2LC or 4659 by gavage once daily for 14days, and colitis was induced by addition of 3% DSS (dextran sulphate sodium) to drinking water for the last 7days of this period. The severity of disease was assessed through clinical observations, histological evaluation and ELISA measurements of myeloperoxidase (MPO) and pro-inflammatory cytokines from colonic samples. Mucus thickness was measured invivo with micropipettes, and tight junction protein expression was assessed using immunohistochemistry.Results: Colitis severity was significantly reduced by L.reuteri R2LC or 4659 when evaluated both clinically and histologically. The inflammation markers MPO, IL-1, IL-6 and mKC (mouse keratinocyte chemoattractant) were increased by DSS and significantly reduced by the L.reuteri strains. The firmly adherent mucus thickness was reduced by DSS, but significantly increased by L.reuteri in both control and DSS-treated mice. Expression of the tight junction proteins occludin and ZO-1 was significantly increased in the bottom of the colonic crypts by L.reuteri R2LC.Conclusion: These results demonstrate that each of the two different L. reuteri strains, one human-derived and one-rat-derived, protects against colitis in mice. Mechanisms behind this protection could at least partly be explained by the increased mucus thickness as well as a tightened epithelium in the stem cell area of the crypts.
Subject headings and genre
- MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Fysiologi hsv//swe
- MEDICAL AND HEALTH SCIENCES Basic Medicine Physiology hsv//eng
- colon
- dextran sulphate sodium
- inflammatory bowel disease
- mucus thickness
- probiotics
- tight junctions
Added entries (persons, corporate bodies, meetings, titles ...)
- Liu, HaoyuUppsala universitet,Institutionen för medicinsk cellbiologi(Swepub:uu)haoli973 (author)
- Schreiber, OlofUppsala universitet,Institutionen för medicinsk cellbiologi(Swepub:uu)olosc876 (author)
- Roos, StefanSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för mikrobiologi,Department of Microbiology,Swedish Univ Agr Sci, Uppsala BioCtr, Dept Microbiol, Uppsala, Sweden.(Swepub:slu)48983 (author)
- Phillipson, MiaUppsala universitet,Integrativ Fysiologi(Swepub:uu)mjo07958 (author)
- Holm, LenaUppsala universitet,Integrativ Fysiologi(Swepub:uu)pho23887 (author)
- Uppsala universitetIntegrativ Fysiologi (creator_code:org_t)
- Sveriges lantbruksuniversitet
Related titles
- In:Acta Physiologica: Wiley217:4, s. 300-3101748-17081748-1716
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