References of "Louis, Edouard"
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See detailCommon variants at five new loci associated with early-onset inflammatory bowel disease.
Imielinski, Marcin; Baldassano, Robert N; Griffiths, Anne et al

in Nature Genetics (2009), 41(12), 1335-40

The inflammatory bowel diseases (IBD) Crohn's disease and ulcerative colitis are common causes of morbidity in children and young adults in the western world. Here we report the results of a genome-wide ... [more ▼]

The inflammatory bowel diseases (IBD) Crohn's disease and ulcerative colitis are common causes of morbidity in children and young adults in the western world. Here we report the results of a genome-wide association study in early-onset IBD involving 3,426 affected individuals and 11,963 genetically matched controls recruited through international collaborations in Europe and North America, thereby extending the results from a previous study of 1,011 individuals with early-onset IBD. We have identified five new regions associated with early-onset IBD susceptibility, including 16p11 near the cytokine gene IL27 (rs8049439, P = 2.41 x 10(-9)), 22q12 (rs2412973, P = 1.55 x 10(-9)), 10q22 (rs1250550, P = 5.63 x 10(-9)), 2q37 (rs4676410, P = 3.64 x 10(-8)) and 19q13.11 (rs10500264, P = 4.26 x 10(-10)). Our scan also detected associations at 23 of 32 loci previously implicated in adult-onset Crohn's disease and at 8 of 17 loci implicated in adult-onset ulcerative colitis, highlighting the close pathogenetic relationship between early- and adult-onset IBD. [less ▲]

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See detailDyspeptic symptoms in the general population: a factor and cluster analysis of symptom groupings.
Piessevaux, H.; De Winter, B.; Louis, Edouard ULg et al

in Neurogastroenterology & Motility : The Official Journal of the European Gastrointestinal Motility Society (2009), 21(4), 378-88

Both dyspeptic and gastro-oesophageal reflux-like symptoms are frequent in the general population, but their degree of overlap is unknown. In severe functional dyspepsia (FD), symptoms are organized in ... [more ▼]

Both dyspeptic and gastro-oesophageal reflux-like symptoms are frequent in the general population, but their degree of overlap is unknown. In severe functional dyspepsia (FD), symptoms are organized in factors associated with pathophysiological mechanisms. The aims of this study were: (i) to assess the prevalence of dyspeptic symptoms with and without overlapping reflux symptoms in the general population and their impact on daily life and on healthcare utilization; and (ii) to compare symptom groupings in the general population to FD patients. A total of 2025 subjects, representative of the Belgian general population, were used in this study. The subjects were submitted to a questionnaire with validated questions on their dyspeptic and reflux symptoms and with evaluators of impact on daily life and use of healthcare resources. Significant dyspeptic symptoms were found in 417 (20.6%). Overlapping reflux symptoms were present in 141 (33.8%). In this group, symptoms were more frequent and more severe. Dyspeptic symptoms induced weight loss (12.7%) and absenteeism (12.4%), affected daily life (61.2%) and generated use of healthcare resources, such as medical consultations (61.4%) and medication (70.9%). Factor analysis revealed a three-component structure with factor 1 including fullness, bloating and early satiety, factor 2 including nausea and vomiting and factor 3 including discomfort, pain, belching and reflux. If forced in a four-factor model, the analysis separates belching as independent factor. Dyspeptic symptoms are frequent in the general population, with overlapping reflux symptoms and increased symptom burden in about a third. [less ▲]

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See detailLe depistage generalise du cancer colorectal: une absolue necessite et une realite imminente en Communaute francaise.
Polus, Marc ULg; Montrieux, Christian ULg; Giet, Didier ULg et al

in Revue Médicale de Liège (2009), 64(2), 96-102

Colorectal cancer is a real problem of public health. Screening is an absolute necessity. An ambitious program of screening is launched in the French Community. Faecal occult blood test will be proposed ... [more ▼]

Colorectal cancer is a real problem of public health. Screening is an absolute necessity. An ambitious program of screening is launched in the French Community. Faecal occult blood test will be proposed to average risk patients in the general population. A total colonoscopy will be performed if FOBT is positive. First step colonoscopy will be proposed to high or very high risk patients. General practitioners are in the core of the multi-disciplinary program. [less ▲]

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See detailOutils isotopiques pour les MICI : PET et PET/CT.
Hustinx, Roland ULg; Louis, Edouard ULg

in Côlon & Rectum (2009), 3

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See detailTailoring the treatment to the individual in Crohn's disease
Louis, Edouard ULg; Belaiche, Jacques ULg; Reenaers, Catherine ULg

in Therapeutic advances in Gastroenterology (2009), 2

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See detailProtéomique par SELDI-TOF-MS des maladies inflammatoires articulaires: identification des protéines S100 comme protéines d'intérêt
De Seny, Dominique ULg; Ribbens, Clio ULg; Cobraiville, Gaël ULg et al

in Revue Médicale de Liège (2009), 64(Spec No), 29-35

Clinical proteomics is a technical approach studying the entire proteome expressed by cells, tissues or organs. It describes the dynamics of cell regulation by detecting molecular events related to ... [more ▼]

Clinical proteomics is a technical approach studying the entire proteome expressed by cells, tissues or organs. It describes the dynamics of cell regulation by detecting molecular events related to diseases development. Proteomic techniques focus mainly on identification of new biomarkers or new therapeutic targets. It is a multidisciplinary approach using medical, biological, bioanalytical and bioinformatics knowledges. A strong collaboration between these fields allowed SELDI-TOF-MS proteomics studies to be performed at the CHU and the University of Liege, in GIGA-Research facilities. The aim of these studies was driven along three main axes of research related to the identification of biomarkers specific to a studied pathology, to a common biological pathway and, finally, to a treatment response. [less ▲]

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See detailEfficacy and safety of a third anti-TNF monoclonal antibody in Crohn's disease after failure of two other anti-TNF.
Allez, Matthieu; Vermeire, Severine; Mozziconacci, Nicolas et al

in Alimentary Pharmacology & Therapeutics (2009)

Adalimumab (ADA) and certolizumab pegol (CZP) have demonstrated efficacy in Crohn's disease (CD) patients previously treated with infliximab (IFX). Aim: To assess the efficacy and tolerability of a third ... [more ▼]

Adalimumab (ADA) and certolizumab pegol (CZP) have demonstrated efficacy in Crohn's disease (CD) patients previously treated with infliximab (IFX). Aim: To assess the efficacy and tolerability of a third anti-TNF in CD after failure of and/or intolerance to two different anti-TNF. Methods: CD patients who received ADA or CZP after loss of response and/or intolerance to two anti-TNF were included in this retrospective study. Data were collected using a standardized questionnaire. Clinical response, duration, safety and reasons for discontinuation were assessed. Results: Sixty-seven patients treated with CZP (n=40) or ADA (n=27) were included. A clinical response was observed in 41 (61%) at week 6 and 34 patients (51%) at week 20. The probability of remaining under treatment at 3 months, 6 months and 9 months was 68%, 60% and 45%, respectively. At the end of follow-up, the third anti-TNF had been stopped in 36 patients for intolerance (n=13), or failure (n=23). Two deaths were observed. Conclusion: Treatment, with a third anti-TNF (CZP or ADA) agent, of CD patients who have experienced loss of response and/or intolerance to two anti-TNF antibodies, has favorable short- and long-term efficacy and is an option to be considered in patients with no other therapeutic options. [less ▲]

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See detailEvaluation of the GERD Impact Scale, an international, validated patient questionnaire, in daily practice. Results of the ALEGRIA study.
Louis, Edouard ULg; Tack, Jacques ULg; Vandenhoven, G. et al

in Acta Gastro-Enterologica Belgica (2009), 72(1), 3-8

BACKGROUND AND STUDY AIMS: Gastroesophageal reflux disease (GERD) is a common chronic disease that is primarily diagnosed based on symptom severity and frequency. This study gathered epidemiological data ... [more ▼]

BACKGROUND AND STUDY AIMS: Gastroesophageal reflux disease (GERD) is a common chronic disease that is primarily diagnosed based on symptom severity and frequency. This study gathered epidemiological data in a population of GERD patients and evaluated the added-value of the GERD Impact Scale (GIS), a novel, validated patient questionnaire, as a tool for initial and long-term patient management. PATIENTS AND METHODS: This observational study recruited patients (296 study centers) with symptomatic GERD and a history of erosive, or reflux, esophagitis. Symptoms were assessed by GIS and physician-subject interview and recorded at baseline (visit 1), at 4-6 weeks (visit 2) and 8-14 weeks (visit 3); also recorded at each visit was the physician's assessment of GERD severity and treatment changes. Analyses were performed on an intent-to-treat basis. RESULTS: Subjects (n = 1919; mean age, 55 years) were 54% female. Lifestyle characteristics included stress (approximately 70% of subjects), mean daily consumption of five cups of caffeine-containing beverages (approximately 70%), alcohol consumption of approximately nine units per week (approximately 50%) and smoking/ex-smoker (41%). Proton pump inhibitors were prescribed in 99% of cases: mainly esomeprazole (82%), with a median dose of 40 mg. Prescribed therapy was changed (mainly dosage levels) between visits in approximately 60% of subjects. The severity of GERD symptoms and GIS scores decreased substantially throughout the study. Mean GIS scores correlated positively with increasing GERD severity and clinical judgment at all visits. Physicians reported that the GIS helped them define the appropriate treatment for the patient and to evaluate the patient's response to treatment in 81% of cases. CONCLUSIONS: This study demonstrates the added-value and usefulness of the patient self-assessment GIS as a management tool for GERD. [less ▲]

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See detailGenetics of ulcerative colitis: the come-back of interleukin 10.
Louis, Edouard ULg; Libioulle, Cécile ULg; Reenaers, Catherine ULg et al

in Gut (2009), 58(9), 1173-6

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See detailThérapies biologiques et maladies inflammatoires chroniques intestinales
Reenaers, Catherine ULg; Louis, Edouard ULg; Belaiche, Jacques ULg

in Revue Médicale de Liège (2009), 64(5-6), 301-304

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See detailChallenges for Biomarker Discovery in Body Fluids Using SELDI-TOF-MS
De Bock, Muriel ULg; De Seny, Dominique ULg; Meuwis, Marie-Alice ULg et al

in Journal of Biomedicine & Biotechnology (2009)

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See detailPredictors of severe Crohn's disease
Loly, Catherine ULg; Belaiche, Jacques ULg; Louis, Edouard ULg

in Scandinavian Journal of Gastroenterology (2008), 43(8), 948-54

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See detailGastroenterology - Clinical and genetic factors associated with sacroiliitis in Crohn's disease
Peeters, Harald; Cruyssen, Bert Vander; Mielants, Herman et al

in Journal of Gastroenterology and Hepatology (2008), 23(1), 132-137

Background and Aim: Radiographic sacroiliitis (SI), often asymptomatic, is considered the most frequent extra-intestinal manifestation (EIM) of Crohn's disease (CD). Data on the association of SI with ... [more ▼]

Background and Aim: Radiographic sacroiliitis (SI), often asymptomatic, is considered the most frequent extra-intestinal manifestation (EIM) of Crohn's disease (CD). Data on the association of SI with other clinical features of CD are limited. Association of SI with CARD15 polymorphisms has recently been suggested. In a multicenter study, we investigated the association of SI in CD patients with clinical phenotypes, other EIM and CARD15 polymorphisms. Methods: Radiographs of the sacroiliac joints were taken in 251 CD patients from three Belgian university hospitals and scored by two blinded rheumatologists. Clinical features were obtained from medical records. Forty-three percent of patients carried at least one CARD15 polymorphism. Results: Sacroiliitis, defined as the presence of at least grade 2 unilateral changes, was diagnosed in 65 of the 244 scorable radiographs (27%). Only 16 of these patients were previously diagnosed with ankylosing spondylitis (AS). HLA-B27 positivity was observed in 53% of patients with AS and 7% of patients with radiographic SI. In univariate and multivariate analysis, associations between the presence of SI and peripheral arthritis (P = 0.005) and between AS and uveitis (P = 0.005) were found. No associations with other recorded clinical features or with CARD15 polymorphisms were observed. Conclusion: We confirm the high prevalence of radiographic sacroiliitis in a multicenter CD cohort. Uveitis is only associated with AS whereas all patients with SI are more prone to develop peripheral arthritis during their disease course, suggesting similar pathogenetic mechanisms in the development of these EIM. The previously reported association between SI and CARD15 polymorphisms was not confirmed. [less ▲]

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See detailProteomics for prediction and characterization of response to infliximab in Crohn's disease: a pilot study.
Meuwis, Marie-Alice ULg; Fillet, Marianne ULg; Lutteri, Laurence ULg et al

in Clinical Biochemistry (2008), 41(12), 960-7

OBJECTIVES: Infliximab is the first anti-TNFalpha accepted by the Food and Drug Administration for use in inflammatory bowel disease treatment. Few clinical, biological and genetic factors tend to predict ... [more ▼]

OBJECTIVES: Infliximab is the first anti-TNFalpha accepted by the Food and Drug Administration for use in inflammatory bowel disease treatment. Few clinical, biological and genetic factors tend to predict response in Crohn's disease (CD) patient subcategories, none widely predicting response to infliximab. DESIGN AND METHODS: Twenty CD patients showing clinical response or non response to infliximab were used for serum proteomic profiling on Surface Enhanced Lazer Desorption Ionisation-Time of Flight-Mass Spectrometry (SELDI-TOF-MS), each before and after treatment. Univariate and multivariate data analysis were performed for prediction and characterization of response to infliximab. RESULTS: We obtained a model of classification predicting response to treatment and selected relevant potential biomarkers, among which platelet aggregation factor 4 (PF4). We quantified PF4, sCD40L and IL-6 by ELISA for correlation studies. CONCLUSIONS: This first proteomic pilot study on response to infliximab in CD suggests association between platelet metabolism and response to infliximab and requires validation studies on a larger cohort of patients. [less ▲]

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See detailDoes the behavior of Crohn's disease change over time?
Louis, Edouard ULg; Reenaers, Catherine ULg; Belaiche, Jacques ULg

in Inflammatory Bowel Diseases (2008), 14

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See detailAre we giving biologics too much time? When should we stop treatment?
Louis, Edouard ULg; Reenaers, Catherine ULg; Belaiche, Jacques ULg

in World Journal of Gastroenterology (2008), 14

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See detailGenome-wide association defines more than 30 distinct susceptibility loci for Crohn's disease
Barrett, Jeffrey C.; Hansoul, Sarah ULg; Nicolae, Dan L. et al

in Nature Genetics (2008), 40(8), 955-62

Several risk factors for Crohn's disease have been identified in recent genome-wide association studies. To advance gene discovery further, we combined data from three studies on Crohn's disease (a total ... [more ▼]

Several risk factors for Crohn's disease have been identified in recent genome-wide association studies. To advance gene discovery further, we combined data from three studies on Crohn's disease (a total of 3,230 cases and 4,829 controls) and carried out replication in 3,664 independent cases with a mixture of population-based and family-based controls. The results strongly confirm 11 previously reported loci and provide genome-wide significant evidence for 21 additional loci, including the regions containing STAT3, JAK2, ICOSLG, CDKAL1 and ITLN1. The expanded molecular understanding of the basis of this disease offers promise for informed therapeutic development. [less ▲]

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See detailNew biomarkers of Crohn's disease: serum biomarkers and development of diagnostic tools
Meuwis, Marie-Alice ULg; Fillet, Marianne ULg; Chapelle, Jean-Paul ULg et al

in Expert Review of Molecular Diagnostics (2008), 8

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