Publications by authors named "Lemann M"

Objectives: Although anti-tumor necrosis factor (TNF) therapy is the treatment of choice for perianal fistulizing Crohn's disease (CD), the efficacy and safety of anti-TNF therapy in enterocutaneous fistula (ECF) remains unclear.

Methods: Between January 2008 and December 2009, we retrospectively reviewed the outcomes of all CD patients with ECF (excluding perianal fistula) treated with anti-TNF therapy followed up in Groupe d'Etude Thérapeutique des Affections Inflammatoires du tube Digestif (GETAID) centers. ECF closure and tolerance of anti-TNF therapy were studied using univariate and multivariate analyses.

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Aim: To investigate a possible genetic influence of claudin (CLDN)1, CLDN2 and CLDN4 in the etiology of inflammatory bowel disease.

Methods: Allelic association between genetic regions of CLDN1, CLDN2 or CLDN4 and patients with inflammatory bowel disease, Crohn's disease (CD) or ulcerative colitis were investigated using both a case-control study approach (one case randomly selected from each of 191 Swedish inflammatory bowel disease families and 333 controls) and a family-based study (463 non-Swedish European inflammatory bowel disease -families). A nonsynonymous coding single nucleotide polymorphism in MORC4, located on the same linkage block as CLDN2, was investigated for association, as were two novel CLDN2 single nucleotide polymorphism markers, identified by resequencing.

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Background & Aims: Recent studies reported a role for more than 70 genes or loci in the susceptibility to Crohn's disease (CD). However, the impact of these associations in clinical practice remains to be defined. The aim of the study was to analyse the relationship between genotypes and phenotypes for the main 53 CD-associated polymorphisms.

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Background: Inflammatory bowel disease can impact on a patient's ability to maintain normal physical and mental function, and fulfil their social, family and work roles. Aspects of disability in IBD have received little attention.

Aim: To develop, validate and apply a questionnaire directed towards evaluating these disease aspects.

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Background: Ciclosporin and infliximab are potential rescue treatments to avoid colectomy in patients with acute severe ulcerative colitis refractory to intravenous corticosteroids. We compared the efficacy and safety of these drugs for this indication.

Methods: In this parallel, open-label, randomised controlled trial, patients were aged at least 18 years, had an acute severe flare of ulcerative colitis defined by a Lichtiger score greater than 10 points, and had been given an unsuccessful course of high-dose intravenous steroids.

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Treatment of inflammatory bowel disease has greatly improved with the development of targeted, monoclonal antibody-based therapies. Tumor necrosis factor antagonists are frequently used to treat patients with Crohn's disease or ulcerative colitis, but they have side effects and their efficacy often decreases with use. New, more effective drugs are therefore needed and in development.

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Objective: To evaluate the efficacy of certolizumab pegol (CZP) in improving endoscopic lesions in patients with active ileocolonic Crohn's disease (CD).

Methods: This phase IIIB multicentre open-label clinical trial enrolled 89 adult patients with active endoscopic disease (ulceration in ≥2 intestinal segments with a Crohn's Disease Endoscopic Index of Severity (CDEIS) score ≥8 points). Patients received subcutaneous CZP 400 mg at weeks 0, 2 and 4 and every 4 weeks up to week 52.

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Background: Identification of children with Crohn's disease (CD) at high risk of disabling disease would be invaluable in guiding initial therapy. Our study aimed to identify predictors at diagnosis of a subsequent disabling course in a population-based cohort of patients with pediatric-onset CD.

Methods: Among 537 patients with pediatric CD diagnosed at <17 years of age, 309 (57%) with 5-year follow-up were included.

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Introduction: Enteropathy-associated T-cell lymphoma is a rare form of T-cell lymphoma associated with a poor prognosis and the relative ineffectiveness of standard chemotherapy. The occurrence of haemophagocytic lymphohistiocytosis has been reported only once with this entity.

Patients And Methods: A retrospective study of 15 patients with enteropathy-associated T-cell lymphoma (type 1 in 12), followed-up in our units, since 1985.

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Background: Symptom relief is the traditional treatment goal in Crohn's disease (CD). New goals including mucosal healing and bowel preservation are now achievable with tumor necrosis factor (TNF) antagonists. Infliximab and adalimumab are approved as second-line treatments for severe, active CD.

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Background: Variability in endoscopic assessment necessitates rigorous investigation of descriptors for scoring severity of ulcerative colitis (UC).

Objective: To evaluate variation in the overall endoscopic assessment of severity, the intra- and interindividual variation of descriptive terms and to create an Ulcerative Colitis Endoscopic Index of Severity which could be validated.

Design: A two-phase study used a library of 670 video sigmoidoscopies from patients with Mayo Clinic scores 0-11, supplemented by 10 videos from five people without UC and five hospitalised patients with acute severe UC.

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Background & Aims: It is important to determine whether infliximab therapy can be safely interrupted in patients with Crohn's disease who have undergone a period of prolonged remission. We assessed the risk of relapse after infliximab therapy was discontinued in patients on combined maintenance therapy with antimetabolites and identified factors associated with relapse.

Methods: We performed a prospective study of 115 patients with Crohn's disease who were treated for at least 1 year with scheduled infliximab and an antimetabolite and had been in corticosteroid-free remission for at least 6 months.

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Purpose: To develop a self-administered questionnaire assessing patients' satisfaction with treatments in Crohn's disease for use in clinical research and epidemiological studies.

Patients And Methods: Semi-directive interviews (16) were conducted with patients with severe Crohn's disease treated with anti-tumor necrosis factor alpha (anti-TNFα). Transcripts were analyzed and concepts related to satisfaction with treatment were extracted and organized into a model.

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Background: The function of eosinophils has been attributed to host defense, immunomodulation, and fibrosis. Although eosinophils are found among infiltrating cells in a broad spectrum of skin diseases, their pathogenic role remains uncertain. This study aimed to analyze the cytokine expression by eosinophils in different skin diseases.

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Background & Aims: Patients with inflammatory bowel disease (IBD) who have been exposed to thiopurines might have an increased risk of skin cancer. We assessed this risk among patients in France.

Methods: We performed a prospective observational cohort study of 19,486 patients with IBD, enrolled from May 2004 to June 2005, who were followed up until December 31, 2007.

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Objectives: To develop and/or update fact sheets about TNFα antagonists treatments, in order to assist physicians in the management of patients with inflammatory joint disease.

Methods: 1. selection by a committee of rheumatology experts of the main topics of interest for which fact sheets were desirable; 2.

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Background & Aims: The natural killer group 2 member D (NKG2D) is a stimulatory receptor expressed on a subset of mucosal and peripheral CD4+ T cells in patients with Crohn's disease (CD) and other inflammatory diseases. Ligand activation of NKG2D in patients induces CD4+ T cells to release T-helper (Th) 1 cytokines and become cytotoxic. We investigated the Th17 cytokines produced by T cells that express NKG2D in blood and intestinal mucosa samples from patients with CD.

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Crohn's disease (CD) is a chronic progressive destructive disease. Currently available instruments measure disease activity at a specific point in time. An instrument to measure cumulative structural damage to the bowel, which may predict long-term disability, is needed.

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Background: Total proctocolectomy with definitive ileostomy is the ultimate treatment for refractory colonic Crohn's disease (CD). Aim of the study was to report the outcome of Crohn's disease patients after total proctocolectomy with definitive ileostomy.

Patients And Methods: Between 1990 and 2005, 55 patients underwent total proctocolectomy with definitive ileostomy for Crohn's disease in our institution.

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Objectives: Rescue therapy with either cyclosporine (CYS) or infliximab (IFX) is an effective option in patients with intravenous steroid-refractory attacks of ulcerative colitis (UC). In patients who fail, colectomy is usually recommended, but a second-line rescue therapy with IFX or CYS is an alternative. The aims of this study were to investigate the efficacy and tolerance of IFX and CYS as a second-line rescue therapy in steroid-refractory UC or indeterminate colitis (IC) unsuccessfully treated with CYS or IFX.

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Background: New medical therapies have improved outlook in inflammatory bowel disease but published impact on surgical rates has been modest suggesting that many patients are still not attaining remission.

Aim: To review remission rates with current medical treatments for inflammatory bowel disease.

Methods: We searched MEDLINE (source PUBMED, 1966 to January, 2011).

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Genome-wide association studies and candidate gene studies in ulcerative colitis have identified 18 susceptibility loci. We conducted a meta-analysis of six ulcerative colitis genome-wide association study datasets, comprising 6,687 cases and 19,718 controls, and followed up the top association signals in 9,628 cases and 12,917 controls. We identified 29 additional risk loci (P < 5 × 10(-8)), increasing the number of ulcerative colitis-associated loci to 47.

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Background: We examined short- and long-term benefits and safety of infliximab (IFX) in a population-based cohort of Crohn's disease (CD) patients <17 years old at diagnosis.

Methods: The following parameters were assessed: short- and long-term efficacy of IFX, impact of drug efficacy, and mode of administration on rate of resection surgery, growth and nutritional catch-up, and adverse events (AEs).

Results: In all, 120 patients (69 female) required IFX with a median duration of 32 months (Q1 = 8-Q3 = 60).

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Background: In healthy humans, up to 30 g of daily ingested starch escape small intestinal digestion, and are fermented in the colon. This physiological starch malabsorption could modify colonic motility through metabolites such as short-chain fatty acids produced by fermentation.

Methods: Ten healthy volunteers swallowed a probe, consisting of an infusion catheter, six perfused catheters and a balloon connected to a barostat.

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Background: Anti-tumour necrosis factor (TNF) therapy may be associated with opportunistic infections (OIs).

Objective: To describe the spectrum of non-tuberculosis OIs associated with anti-TNF therapy and identify their risk factors.

Methods: A 3-year national French registry (RATIO) collected all cases of OI in patients receiving anti-TNF treatment for any indication in France.

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