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Ardesjö, BritaUppsala universitet,Institutionen för medicinska vetenskaper,Autoimmuna sjukdomar (Kämpe)
(author)
Identification of a novel staining pattern of bile duct epithelial cells in primary sclerosing cholangitis
- Article/chapterEnglish2010
Publisher, publication year, extent ...
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Oxford University Press (OUP),2010
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Numbers
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LIBRIS-ID:oai:DiVA.org:uu-124967
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-124967URI
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https://doi.org/10.1002/ibd.21050DOI
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https://gup.ub.gu.se/publication/101413URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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BACKGROUND: Primary sclerosing cholangitis (PSC) is an inflammatory disease of the bile ducts with an unknown etiology. A number of autoantigens have been proposed, but an early diagnostic marker is still lacking. Our aim was to identify such an autoantigen. METHODS: Immunostaining was performed on normal human bile duct with sera from patients with PSC and controls. To identify an autoantigen a cDNA library from normal human choledochus was constructed and immunoscreened with patient sera. Using in vitro transcription and translation and immunoprecipitation we examined the immunoreactivity against PDZ domain containing 1 (PDZK1) in 35 patients with PSC, 198 control patients, and 94 healthy controls. RESULTS: We observed a previously unpublished staining pattern in which cytoplasmatic granules and apical cell membranes of biliary epithelial cells were stained by PSC sera. Strong immunoreactivity to these structures was obtained with 12 out of 35 PSC sera (34%) but not with sera from healthy controls. By screening the cDNA library we identified PDZK1 as a candidate antigen. Immunoreactivity against PDZK1 was detected in 9% of PSC patients, 2% of inflammatory bowel disease (IBD) patients, 8% of autoimmune pancreatitis patients, 18% of Grave's disease patients, and 1% of healthy controls. CONCLUSIONS: Previously unpublished, specific, and strong autoantibodies against epithelial cells of the bile duct in PSC sera were identified. Furthermore, PDZK1 is suggested as a potential new autoantigen.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Portela-Gomes, Guida M.Uppsala universitet,Institutionen för genetik och patologi
(author)
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Rorsman, FredrikUppsala universitet,Institutionen för medicinska vetenskaper,magtarm(Swepub:uu)fredrikr
(author)
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Grimelius, LarsUppsala universitet,Institutionen för genetik och patologi(Swepub:uu)larsgrim
(author)
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Ekwall, OlovGothenburg University,Göteborgs universitet,Uppsala universitet,Institutionen för medicinska vetenskaper,Autoimmuna sjukdomar (Kämpe),Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research(Swepub:gu)xekwol
(author)
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Uppsala universitetInstitutionen för medicinska vetenskaper
(creator_code:org_t)
Related titles
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In:Inflammatory Bowel Diseases: Oxford University Press (OUP)16:2, s. 305-3111078-09981536-4844
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