Intérêt de la luminothérapie dans la maladie d'Alzheimer

RENNES1-BU Santé (352382103) / SudocSudocFranceF

Outpatient laparoscopic sacrocolpopexy: Feasibility and patient satisfaction

International audienceObjective: Laparoscopic sacrocolpopexy is the standard surgery to correct apical pelvic organ prolapse. It is currently mainly practiced in the context of a conventional hospitalization, but more and more practitioners are developing it as an outpatient procedure. The objective of this study was to evaluate the feasibility of outpatient laparoscopic sacrocolpopexy and patient satisfaction. Methods: This was a retrospective study comparing outpatients with inpatients who had undergone laparoscopic sacrocolpopexy. The main outcome was the rate of unscheduled visits and the number of early readmissions (i.e., <1 month). Secondary outcomes were complication rates and patient satisfaction. Results: Eighty-four patients were included with 42 women in each group. The rate of unscheduled consultations was 16.7 %(n = 7/42) in the outpatient group and 21 %(n = 9/42) in the inpatient group. 2.4 %(n = 1/42) of outpatients and 4.8 % (n = 2/42) of inpatients were re-hospitalized within a month after surgery. The complication rate was not significantly different between the groups. In the outpatient group, 88.2 % of patients were satisfied compared with 97.5 % in the inpatient group (p = 0.17) Conclusions: Outpatient laparoscopic sacrocolpopexy can be considered a safe and satisfactory option. (C) 2021 Published by Elsevier Masson SAS

Aortic valve calcification is promoted by interleukin-8 and restricted through antagonizing CXCR2

International audienceAims Inflammatory cytokines play a critical role in the progression of calcific aortic valve disease (CAVD), for which there is currently no pharmacological treatment. The aim of this study was to test the hypothesis that interleukin-8 (IL-8), known to be involved in arterial calcification, also promotes aortic valve calcification (AVC) and to evaluate whether pharmacologically blocking the IL-8 receptor, CXC motif chemokine receptor 2 (CXCR2), could be effective in preventing AVC progression. Methods and Results A cohort of 195 patients (median age 73, 74% men) diagnosed with aortic valve stenosis (severe in 16.9% of cases) were prospectively followed by CT for a median time of 2.6 years. A Cox proportional hazards regression analysis indicated that baseline IL-8 serum concentrations were associated with rapid progression of AVC, defined as an annualized change in the calcification score by CT ≥ 110 AU/year, after adjustment for age, gender, bicuspid anatomy and baseline disease severity. In vitro, exposure of primary human aortic valvular interstitial cells (hVICs) to 15 pg/ml IL-8 induced a two-fold increase in inorganic phosphate (Pi)-induced calcification. IL-8 promoted NFκB pathway activation, MMP-12 expression, and elastin degradation in hVICs exposed to Pi. These effects were prevented by SCH527123, an antagonist of CXCR2. The expression of CXCR2 was confirmed in hVICs and samples of aortic valves isolated from patients with CAVD, in which the receptor was mainly found in calcified areas, along with MMP-12 and a degraded form of elastin. Finally, in a rat model of chronic kidney disease-associated CAVD, SCH527123 treatment (1 mg/kg/day given orally for 11 weeks) limited the decrease in aortic cusp separation, the increase in maximal velocity of the transaortic jet, and the increase in aortic mean pressure gradient measured by echocardiography, effects that were associated with a reduction in hydroxyapatite deposition and MMP-12 expression in the aortic valves. Conclusion Overall, these results highlight, for the first time, a significant role for IL-8 in the progression of CAVD by promoting calcification via a CXCR2­- and MMP-12-dependent mechanism that leads to elastin degradation, and identify CXCR2 as a promising therapeutic target for the treatment of CAVD

Collaborative study of a Supercritical Fluid Chromatography method for the determination of pharmaceutical impurities

Projet PHAR

First inter-laboratory study of a Supercritical Fluid Chromatography method for the determination of pharmaceutical impurities

International audienceSupercritical Fluid Chromatography (SFC) has known a strong regain of interest for the last 10 years, especially in the field of pharmaceutical analysis. Besides the development and validation of the SFC method in one individual laboratory, it is also important to demonstrate its applicability and transferability to various laboratories around the world. Therefore, an inter-laboratory study was conducted and published for the first time in SFC, to assess method reproducibility, and evaluate whether this chromatographic technique could become a reference method for quality control (QC) laboratories. This study involved 19 participating laboratories from 4 continents and 9 different countries. It included 5 academic groups, 3 demonstration laboratories at analytical instrument companies, 10 pharmaceutical companies and 1 food company. In the initial analysis of the study results, consistencies within- and between-laboratories were deeply examined. In the subsequent analysis, the method reproducibility was estimated taking into account variances in replicates, between-days and between-laboratories. The results obtained were compared with the literature values for liquid chromatography (LC) in the context of impurities determination. Repeatability and reproducibility variances were found to be similar or better than those described for LC methods, and highlighted the adequacy of the SFC method for QC analyses. The results demonstrated the excellent and robust quantitative performance of SFC. Consequently, this complementary technique is recognized on equal merit to other chromatographic techniques

Clinical reporting following the quantification of cerebrospinal fluid biomarkers in Alzheimer's disease: An international overview

International audienceIntroduction: The current practice of quantifying cerebrospinal fluid (CSF) biomarkers as an aid in the diagnosis of Alzheimer's disease (AD) varies from center to center. For a same biochemical profile, interpretation and reporting of results may differ, which can lead to misunderstandings and raises questions about the commutability of tests.Methods: We obtained a description of (pre-)analytical protocols and sample reports from 40 centers worldwide. A consensus approach allowed us to propose harmonized comments corresponding to the different CSF biomarker profiles observed in patients.Results: The (pre-)analytical procedures were similar between centers. There was considerable heterogeneity in cutoff definitions and report comments. We therefore identified and selected by consensus the most accurate and informative comments regarding the interpretation of CSF biomarkers in the context of AD diagnosis.Discussion: This is the first time that harmonized reports are proposed across worldwide specialized laboratories involved in the biochemical diagnosis of AD