Comparaison des taux de BNP et de NT-proBNP chez des patients insuffisants rénaux pour prévenir l'insuffisance cardiaque
Le Goff, Caroline ; Kaux, Jean-François ; Bovy, Christophe et al
in Biotribune Magazine (2010), 34
Background: The aim of the study is to compare the performances of BNP and NT-proBNP for diagnosing heart failure (HF) in a population of patients with high incidence of chronic renal insufficiency (CRI ... [more ▼]
Background: The aim of the study is to compare the performances of BNP and NT-proBNP for diagnosing heart failure (HF) in a population of patients with high incidence of chronic renal insufficiency (CRI, plasma creatinine > 1.5 mg/dl). Patients and methods: Ninety-eight patients were included in this study. BNP and NT-proBNP determinations were performed by an immunofluorescent assay (Biosite®) and by an electrochemiluminescence sandwich immuno assay (Roche Diagnostic®), respectively. Results and discussion: BNP and NTproBNP level are correlated in CRI and non CRI . Both assays are useful to rule out CRI pts suspected of HF. However, in renal failure pts, higher decision limits should be used for improving the positive predictive value of the assays. [less ▲]Detailed reference viewed: 219 (9 ULg)
Anticorps anti-gliadines déamidées et maladie coeliaque : données actuelles et évaluation des faux positifs de cinq trousses de dosage
Lutteri, Laurence ; ; Chapelle, Jean-Paul
in Annales de Biologie Clinique (2010), 68(2), 149-56
Recently, anti-deamidated gliadin antihodies were proposed for the serological diagnosis of celiac disease. We evaluate the specificity of different anti-deamidated gliadin antibodies ELISA in comparison ... [more ▼]
Recently, anti-deamidated gliadin antihodies were proposed for the serological diagnosis of celiac disease. We evaluate the specificity of different anti-deamidated gliadin antibodies ELISA in comparison with conventional anti-native gliadin kits. Serum sainples froin 46 non celiac patients trere analyzed by five different quantitative ELISA for anti-native gliadin, antideamidated gliadin and anti-fransglutaininase neo-epitope antibodies together with a screening ELISA. Twenty-four percent of the patients deinonstrated anti-native gliadin lgA and 63% 1gO antibodies. Using anti-dearnidated gliadin antibodies, tire number of false positive IgA and, particularly, 1gG results,markedly decreased in the non celiac patients: 21 and 24% respectively with anti-Gliadin (GAF-3X) Euroimmun kit, 7 and 26% with Bindazyme 1-lurnan Anti-Gliadin (MGP) The Binding Site kit and 0 and 41% with Celiac G+ Immco kit. The new assay which makes use of the physiological complex of tissue transglutaminase cross-linked with deamidated gliadin peptides, called neo-epitope, did not improve the differential diagnosis of celiac disease with 30% of false positive results in IgG (2% in IgA). IJsing the Inova screening kit, a positive resuit for IgA and/or IgG anti-deamidated gliadin and!or anti- tissue transglutaminase antibodies was obtained in 24% of the non celiac patients. In conclusion, our study assessed the superiority, in ternis of specificity, of anti-deamidated gliadin antibodies, over the conventional anti-gliadin antibodies for die differential diagnosis of celiac disease. [less ▲]Detailed reference viewed: 668 (19 ULg)
Analytical validation of the BAP OSTASE on Liaison (DiaSorin).
Cavalier, Etienne ; Rozet, Eric ; Carlisi, Ignazia et al
in Clinical Chemistry & Laboratory Medicine (2010), 48(1), 67-72Detailed reference viewed: 137 (15 ULg)
BCL-3 degradation involves its polyubiquitination through a FBW7-independent pathway and its binding to the proteasome subunit PSMB1.
Keutgens, Aurore ; Zhang-Shao, Xin ; Shostak, Kateryna et al
in Journal of Biological Chemistry (2010), 285(33), 2583125840
The oncogenic protein BCL-3 activates or represses gene transcription through binding with the NF-kappaB proteins p50 and p52 and is degraded through a phospho- and GSK3-dependent pathway. However, the ... [more ▼]
The oncogenic protein BCL-3 activates or represses gene transcription through binding with the NF-kappaB proteins p50 and p52 and is degraded through a phospho- and GSK3-dependent pathway. However, the mechanisms underlying its degradation remain poorly understood. Yeast-two-hybrid analysis led to the identification of the proteasome subunit PSMB1 as a BCL-3-associated protein. The binding of BCL-3 to PSMB1 is required for its degradation through the proteasome. Indeed, PSMB1-depleted cells are defective in degrading polyubiquitinated BCL-3. The N-terminal part of BCL-3 includes lysines 13 and 26 required for the K48-linked polyubiquitination of BCL-3. Moreover, the E3 ligase FBW7 known to polyubiquitinate a variety of substrates phosphorylated by GSK3 is dispensable for BCL-3 degradation. Thus, our data defined an unique motif of BCL-3 that is needed for its recruitment to the proteasome and identified PSMB1 as a key protein required for the proteasome-mediated degradation of a nuclear and oncogenic IkappaB protein. [less ▲]Detailed reference viewed: 82 (36 ULg)
Comparison of three methods for fractionation and enrichment of low molecular weight proteins for SELDI-TOF-MS differential analysis
De Bock, Muriel ; De Seny, Dominique ; Meuwis, Marie-Alice et al
in Talanta (2010), 82
In most diseases, the clinical need for serum/plasma markers has never been so crucial, not only for diagnosis, but also for the selection of the most efficient therapies, as well as exclusion of ... [more ▼]
In most diseases, the clinical need for serum/plasma markers has never been so crucial, not only for diagnosis, but also for the selection of the most efficient therapies, as well as exclusion of ineffective or toxic treatment. Due to the high sample complexity, prefractionation is essential for exploring the deep proteome and finding specific markers. In this study, three different sample preparation methods (i.e., highly abundant protein precipitation, restricted access materials (RAM) combined with IMAC chromatography and peptide ligand affinity beads) were investigated in order to select the best fractionation step for further differential proteomic experiments focusing on the LMW proteome (MW inferior to 40,000 Da). Indeed, the aim was not to cover the entire plasma/serum proteome, but to enrich potentially interesting tissue leakage proteins. These three methods were evaluated on their reproducibility, on the SELDI-TOF-MS peptide/protein peaks generated after fractionation and on the information supplied. The studied methods appeared to give complementary information and presented good reproducibility (below 20%). Peptide ligand affinity beads were found to provide efficient depletion of HMW proteins and peak enrichment in protein/peptide profiles. [less ▲]Detailed reference viewed: 87 (19 ULg)
Measurement uncertainty of 25-OH vitamin D determination with different commercially available kits: impact on the clinical cut offs
Cavalier, Etienne ; Rozet, Eric ; Gadisseur, Romy et al
in Osteoporosis International (2010), 21Detailed reference viewed: 99 (12 ULg)
Multicentre evaluation of the Tosoh HbA1c G8 analyser
Chapelle, Jean-Paul ; Teixeira, Jelda ; et al
in Clinical Chemistry & Laboratory Medicine (2010), 48(3), 365-371Detailed reference viewed: 74 (3 ULg)
Component-resolved-diagnosis and validation of an allergen-microarray technology.
Gadisseur, Romy ; Chapelle, Jean-Paul ; Cavalier, Etienne
in Allergy (2010), 65(suppl. 92), 93Detailed reference viewed: 15 (1 ULg)
Component-resolved diagnosis in peanut and hazelnut allergy.
Gadisseur, Romy ; Chapelle, Jean-Paul ; Cavalier, Etienne et al
in Allergy (2010), 65(Suppl.92), 106Detailed reference viewed: 76 (1 ULg)
Corrélation aldostérone et parathormone en cas d'hyperparathyroïdie primaire vs secondaire?
Ho, Thi Thanh Giang ; Keutgens, Aurore ; Chapelle, Jean-Paul et al
in Annales de Biologie Clinique (2010), 68(6), 703-4Detailed reference viewed: 55 (8 ULg)
The ratio of PTH as measured by third and second generation assays as a marker for parathyroid carcinoma
Cavalier, Etienne ; Daly, Adrian ; Chapelle, Jean-Paul et al
in 12th European Congress of Endocrinology - ICE 2010 (2010)Detailed reference viewed: 11 (1 ULg)
Estimation of the Stability of Parathyroid Hormone when Stored at -80°C for a Long Period
Cavalier, Etienne ; Delanaye, Pierre ; Hubert, Philippe et al
in Clinical Journal of the American Society of Nephrology (2009), 4(12), 1988-92Detailed reference viewed: 52 (22 ULg)
Myéloperoxydase, LDL oxydées et anticorps anti-LDL oxydées sont-ils interdépendants ?
Le Goff, Caroline ; Kaux, Jean-François ; Denooz, André et al
Poster (2009, November 03)Detailed reference viewed: 131 (8 ULg)
Cholestérol total, HDL, LDL et LDL oxydées : implications cardiovasculaires
Le Goff, Caroline ; Kaux, Jean-François ; Denooz, André et al
Poster (2009, November 03)Detailed reference viewed: 155 (10 ULg)
Measurement of HBA1c using the new vitros 5600 integrated system.
Teixeira, Jelda ; Denooz, André ; Chapelle, Jean-Paul
Poster (2009, November)Detailed reference viewed: 126 (16 ULg)
Comparison of myocardial makers for assessing cardiovascular and all cause 3-year mortality in dialysis patients
Teixeira, Jelda ; Le Goff, Caroline ; Aldenhoff, Marie-Claire et al
Poster (2009, October)Detailed reference viewed: 36 (13 ULg)
Baseline inflammation is not predictive of periprocedural troponin elevation after elective percutaneous coronary intervention.
Gach, Olivier ; Louis, Olivier ; Chapelle, Jean-Paul et al
in Heart & Vessels (2009), 24(4), 267-70
High-sensitivity C-reactive protein predicts future cardiovascular events in both healthy individuals and patients with unstable and stable coronary syndromes. Few data are available about the incidence ... [more ▼]
High-sensitivity C-reactive protein predicts future cardiovascular events in both healthy individuals and patients with unstable and stable coronary syndromes. Few data are available about the incidence and the relation to inflammation of troponin elevation following percutaneous coronary intervention (PCI), a potential predictor of longterm outcome. We sought to confirm the impact of embolization on long-term outcome and evaluate the ability of baseline inflammation to predict troponin elevation induced by PCI. We prospectively analyzed 200 patients treated by PCI for stable or Braunwald IIA class unstable angina. The patients were recruited between January 1997 and May 1999, and the population was followed during a mean follow-up of 32 months. Major adverse cardiac events (MACEs) were defined as the occurrence of death, myocardial infarction or recurrent angina requiring repeat PCI, or coronary artery bypass grafting. During the follow-up period, 58 MACEs were observed. By multivariate analysis, independent predictors for the occurrence of MACEs were unstable angina and troponin I level after PCI (P < 0.0001 for both). No correlation was found between baseline inflammation and significant troponin I elevation post PCI and by multivariate analysis, no biological variable was a predictor of troponin I elevation post PCI. Baseline inflammation cannot predict onset of minor myonecrosis damage (expressed by troponin elevation) induced by PCI, a significant predictor of long-term outcome in this setting. [less ▲]Detailed reference viewed: 28 (8 ULg)
Evaluation of the VITROS 5600 integrated system for IgA IgG and IgM determination in serum
Teixeira, Jelda ; Denooz, André ; Chapelle, Jean-Paul
in Clinical Chemistry (2009, July), 55Detailed reference viewed: 108 (11 ULg)