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E-GEOD-38713 - Expression data from intestinal mucosa of patients with UC

Released on 9 November 2012, last updated on 20 November 2012
Homo sapiens
Samples (43)
Array (1)
Protocols (6)
Ulcerative colitis (UC) is a chronic inflammatory disease of the colon with preiods of active disease followed by remission. We performed a whole-genome transcriptional analysis of colonic biopsies from patients with histologically active and inactive UC, as well as non-inflammatory controls. Ulcerative colitis patients and non-inflammatory controls were collected for RNA extraction and hybridization on Affymetrix microarrays. Inclusion criteria for UC patients were: age between 18 and 65, diagnosis of UC established at least 6 months before inclusion and exclusion of concomitant infection. Active disease was defined by endoscopic and histologic score: Mayo sub score >=2 and MATTS >=3 respectively . Inactive disease was also defined by endoscopic and histologic score: Mayo sub score =0 and MATTS <=2 respectively, and a remission state for a minimum of 5 month prior to biopsy collection, and remained inactive for at least 6 months after. Uninvolved mucosa from patients with active UC was defined as a colonic segment with completely normal endoscopic appearance, normal histology, and absence of any previous evidence of active disease. Finally, a total of 43 biopsies were analyzed: 13 healthy controls, 8 inactive UC, 7 non-involved active UC and 15 involved active UC.
Experiment type
transcription profiling by array 
Transcriptional analysis of the intestinal mucosa of patients with ulcerative colitis in remission reveals lasting epithelial cell alterations. Planell N, Lozano JJ, Mora-Buch R, Masamunt MC, Jimeno M, Ord�s I, Esteller M, Ricart E, Piqu� JM, Pan�s J, Salas A. , PMID:23135761