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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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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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