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001-es BibID:BIBFORM044302
Első szerző:Collin, Pekka
Cím:Antiendomysial and antihuman recombinant tissue transglutaminase antibodies in the diagnosis of coeliac disease : a biopsy-proven European multicentre study / Collin Pekka, Kaukinen Katri, Vogelsang Harald, Korponay-Szabo Ilma, Sommer Rudolf, Schreier Elisabeth, Volta Umberto, Granito Alessandro, Veronesi Lorenza, Mascart Francoise, Ocmant Annick, Ivarsson Anneli, Lagerqvist Carina, Bürgin-Wolff Annemarie, Hadziselimovic Faruk, Furlano Raoul I., Sidler Marc A., Mulder Chris J. J., Goerres Marije S., Mearin M. Luisa, Ninaber Maarten K., Gudmand-Hoyer Eivind, Fabiani Elisabetta, Catassi Carlo, Tidlund Helena, Alainentalo Lisbeth, Maki Markku
Dátum:2005
ISSN:0954-691X
Megjegyzések:OBJECTIVE:To investigate the value of serum antitissue transglutaminase IgA antibodies (IgA-TTG) and IgA antiendomysial antibodies (IgA-EMA) in the diagnosis of coeliac disease in cohorts from different geographical areas in Europe. The setting allowed a further comparison between the antibody results and the conventional small-intestinal histology.METHODS:A total of 144 cases with coeliac disease [median age 19.5 years (range 0.9-81.4)], and 127 disease controls [median age 29.2 years (range 0.5-79.0)], were recruited, on the basis of biopsy, from 13 centres in nine countries. All biopsy specimens were re-evaluated and classified blindly a second time by two investigators. IgA-TTG were determined by ELISA with human recombinant antigen and IgA-EMA by an immunofluorescence test with human umbilical cord as antigen.RESULTS:The quality of the biopsy specimens was not acceptable in 29 (10.7%) of 271 cases and a reliable judgement could not be made, mainly due to poor orientation of the samples. The primary clinical diagnosis and the second classification of the biopsy specimens were divergent in nine cases, and one patient was initially enrolled in the wrong group. Thus, 126 coeliac patients and 106 controls, verified by biopsy, remained for final analysis. The sensitivity of IgA-TTG was 94% and IgA-EMA 89%, the specificity was 99% and 98%, respectively.CONCLUSIONS:Serum IgA-TTG measurement is effective and at least as good as IgA-EMA in the identification of coeliac disease. Due to a high percentage of poor histological specimens, the diagnosis of coeliac disease should not depend only on biopsy, but in addition the clinical picture and serology should be considered
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:European Journal Of Gastroenterology & Hepatology. - 17 : 1 (2005), p. 85-91. -
További szerzők:Kaukinen, Katri Vogelsang, Harald Korponay-Szabó Ilma (1959-) (gyermekgyógyász) Sommer, Rudolf Schreier, Elisabeth Volta, Umberto Granito, Alessandro Veronesi, Lorenza Mascart, Francoise Ocmant, Annick Ivarsson, Anneli Lagerqvist, Carina Bürgin-Wolff, Annemarie Hadziselimovic, Faruk Furlano, Raoul I. Sidler, Marc A. Mulder, Chris J. Goerres, Marije S. Mearin, Maria Luisa Ninaber, Maarten K. Gudmand-Hoyer, Eivind Fabiani, Elisabetta Catassi, Carlo Tidlund, Helena Alainentalo, Lisbeth Mäki, Markku
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2.

001-es BibID:BIBFORM044301
Első szerző:Kaukinen, Katri
Cím:Small-bowel mucosal transglutaminase 2-specific IgA deposits in coeliac disease without villous atrophy : a prospective and randomized clinical study / Kaukinen Katri, Peräaho Markku, Collin Pekka, Partanen Jukka, Woolley Nina, Kaartinen Tanja, Nuutinen Tuula, Halttunen Tuula, Mäki Markku, Korponay-Szabo Ilma
Dátum:2005
ISSN:0036-5521
Megjegyzések:OBJECTIVE:In coeliac disease, autoantibodies directed against transglutaminase 2 are produced in small-bowel mucosa, and they have been found to be deposited extracellularly. The aim of this study was to investigate whether such mucosal IgA deposits are important in the diagnostic work-up of early-stage coeliac disease without small-bowel mucosal villous atrophy.MATERIAL AND METHODS:Forty-one adults suspected of coeliac disease owing to increased density of mucosal gamma(delta)+ intraepithelial lymphocytes but normal villous morphology were randomized to gluten challenge or a gluten-free diet for 6 months. Clinically and histologically verified gluten dependency was compared with existence of small-bowel mucosal transglutaminase 2-specific extracellular IgA deposits and (coeliac disease-type) HLA DQ2 and DQ8; 34 non-coeliac subjects and 18 patients with classical coeliac disease served as controls.RESULTS:Of the 41 patients, 5 in the challenge group and 6 in the gluten-free diet group were clinically gluten sensitive; all 11 had HLA DQ2 or DQ8. Ten of these 11 patients showed transglutaminase 2-targeted mucosal IgA deposits, which were dependent on gluten consumption. Minimal IgA deposits were seen in only 3 out of 30 patients with suspected coeliac disease without any clinically detected gluten dependency. The deposits were found in all classical coeliac patients and in none of the non-coeliac control subjects.CONCLUSIONS:Clinically pertinent coeliac disease exists despite normal small-bowel mucosal villous architecture. Mucosal transglutaminase 2-specific IgA deposits can be utilized in detecting such patients with genetic gluten intolerance
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Scandinavian Journal Of Gastroenterology. - 40 : 5 (2005), p. 564-572. -
További szerzők:Peräaho, Markku Collin, Pekka Partanen, Jukka Woolley, Nina Kaartinen, Tanja Nuutinen, Tuula Halttunen, Tuula Mäki, Markku Korponay-Szabó Ilma (1959-) (gyermekgyógyász)
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3.

001-es BibID:BIBFORM044281
Első szerző:Koskinen, Outi
Cím:Gluten-dependent small bowel mucosal transglutaminase 2-specific IgA deposits in overt and mild enteropathy coeliac disease / Koskinen Outi, Collin Pekka, Korponay-Szabo Ilma, Salmi Teea, Iltanen Sari, Haimila Katri, Partanen Jukka, Mäki Markku, Kaukinen Katri
Dátum:2008
ISSN:0277-2116
Megjegyzések:OBJECTIVES: In coeliac disease, immunoglobulin (Ig)A-class autoantibodies against transglutaminase-2 are produced in the small intestinal mucosa, where they are deposited extracellularly. It remains unclear whether positive intestinal transglutaminase-2-targeted IgA deposits in subjects having normal small bowel mucosal morphology are signs of early-stage coeliac disease. We evaluated the gluten dependency of these deposits in overt and mild enteropathy coeliac disease.PATIENTS AND METHODS:All together 48 subjects suspected of coeliac disease but having normal small bowel mucosal villi were enrolled; 28 of them had latent coeliac disease. The remaining 20 having positive intestinal IgA deposits adopted a gluten-free diet before villous atrophy had developed. For comparison, 13 patients with overt coeliac disease and 42 noncoeliac controls were studied. Small bowel mucosal transglutaminase-2-specific autoantibodies were compared with villous morphology, intraepithelial lymphocyte densities, and serum coeliac autoantibodies.RESULTS:Intestinal IgA deposits were seen in all but 1 of the patients with latent coeliac disease, when the morphology was still intact; the intensity of these deposits increased as villous atrophy developed and decreased again on a gluten-free diet. In 20 patients with intestinal IgA deposits in normal villi, the intensity of the deposits decreased with the diet similarly to that seen in patients with overt coeliac disease. Mucosal IgA deposits were seen initially only in 5% of noncoeliac controls and in 8% after extended gluten consumption.CONCLUSIONS:The response of small bowel mucosal transglutaminase-2-specific IgA deposits for dietary intervention was similar in overt and mild enteropathy coeliac disease. Detection of such IgA deposits thus offers a good diagnostic tool to uncover early-stage coeliac disease.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal Of Pediatric Gastroenterology And Nutrition. - 47 : 4 (2008), p. 436-442. -
További szerzők:Collin, Pekka Korponay-Szabó Ilma (1959-) (gyermekgyógyász) Salmi, T. T. Iltanen, Sari Haimila, Katri Partanen, Jukka Mäki, Markku Kaukinen, Katri
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4.

001-es BibID:BIBFORM023716
Első szerző:Raivio, Tiina
Cím:Comparison of a novel whole blood transglutaminase-based ELISA with whole blood rapid antibody test and established conventional serological coeliac disease assays / Raivio T., Korponay-Szabó I. R., Paajanen T., Ashorn M., Iltanen S., Collin P., Laurila K., Nemes É., B. Kovács J., Carrard G., Saramaki M., Maki M., Kaukinen K.
Dátum:2008
Megjegyzések:Serum immunoglobulin A-class tissue transglutaminase (tTG-ab) and endomysial antibody (EMA) tests play a key role in the diagnostic evaluation of celiac disease. Recently, a novel whole blood rapid test based on self-tissue transglutaminase (tTG) was developed for celiac disease case finding. Based on the same principle, a whole blood self-tTG enzyme-linked immunosorbent assay (ELISA), especially applicable to large-scale screening of celiac disease, has been produced. We assessed the value of this new test in celiac disease antibody detection. PATIENTS AND METHODS: The new test uses endogenous tTG found in red blood cells of whole blood in IgA-class tTG-ab measurement by detecting tTG-tTG-ab complexes formed after hemolysis of the whole blood sample. Stored whole blood samples from 150 untreated celiac disease patients and 107 control individuals without celiac disease were evaluated, and the test results were compared with those of the whole blood rapid test, 2 conventional serum-based tTG-ab ELISA tests, and 2 EMA tests. RESULTS: A total of 15 whole blood samples were found to be clotted or dried after storage and were excluded from further evaluation. The whole blood ELISA test had a specificity (98%) comparable to that of the conventional serological tests, the sensitivity (91%) being slightly lower. The test was concordant with the whole blood rapid test in 92% of cases, with 2 serological ELISA tests in 91% and 94% of cases and with EMA tests in 94% and 93% of cases. CONCLUSIONS: Whole blood self-tTG-based testing is accurate in celiac antibody detection, also when an ELISA method is applied. The testing requires no serum separation or external tTG.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal of Pediatric Gastroenterology and Nutrition. - 47 : 5 (2008), p. 562-567. -
További szerzők:Korponay-Szabó Ilma (1959-) (gyermekgyógyász) Paajanen, Tuula Ashorn, Merja Iltanen, Sari Collin, Pekka Laurila, Kaija Nemes Éva (1957-) (csecsemő- és gyermekgyógyász, gasztroenterológus) B. Kovács Judit Carrard, Géraldine Saramäki, Mika Mäki, Markku Kaukinen, Katri
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5.

001-es BibID:BIBFORM044307
Első szerző:Sulkanen, Satu
Cím:Tissue transglutaminase autoantibody enzyme-linked immunosorbent assay in detecting celiac disease / Sulkanen Satu, Halttunen Tuula, Laurila Kaija, Kolho Kaija-Leena, Korponay-Szabó Ilma R., Sarnesto Annikki, Savilahti Erkki, Collin Pekka, Mäki Markku
Dátum:1998
ISSN:0016-5085
Megjegyzések:BACKGROUND & AIMS: Tissue transglutaminase has been reported to be the target for endomysial antibodies in celiac disease. We sought to establish whether immunoglobulin (Ig) A class tissue transglutaminase autoantibodies can be considered specific for celiac disease. METHODS:Serum samples from 136 patients with untreated celiac disease (diagnosed according to the criteria of the European Society for Pediatric Gastroenterology, Hepatology and Nutrition) and 207 disease controls were studied. Enzyme-linked immunosorbent assay (ELISA) and Western blots were performed using calcium-treated and untreated tissue transglutaminase as antigen. Reticulin, endomysial, and mouse monoclonal tissue transglutaminase antibodies were studied by an indirect immunofluorescence method and gliadin antibodies with ELISA. RESULTS:The calcium-activated tissue transglutaminase autoantibody ELISA was highly sensitive (129 of 136) and specific (194 of 207) in detecting celiac disease. The new autoantibody ELISA test correlated well with the endomysial antibody test. Tissue transglutaminase autoantibody ELISA showed a clearly better predictive potential than the IgA class gliadin antibody ELISA. Immunoblots and ELISA blocking studies showed that calcium is needed for the specific antigen-antibody reaction to occur. Double immunofluorescence staining in human umbilical cord with sera from patients with celiac disease and with monoclonal tissue transglutaminase antibodies showed complete overlap. CONCLUSIONS:Calcium-activated tissue transglutaminase autoantibody ELISA is highly accurate in detecting untreated celiac disease. Tissue transglutaminase seems to be the target self-antigen for endomysial antibodies.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Gastroenterology. - 115 : 6 (1998), p. 1322-1328. -
További szerzők:Halttunen, Tuula Laurila, Kaija Kolho, Kaija-Leena Korponay-Szabó Ilma (1959-) (gyermekgyógyász) Sarnesto, Annikki Savilahti, Erkki Collin, Pekka Mäki, Markku
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