Publications by authors named "LeRoux L"

Background: Treatment of residual mitral regurgitation (MR) with different percutaneous devices after transcatheter edge-to-edge repair (TEER) has been reported as an alternative option to reclipping or surgery. This review aims at describing the different transcatheter strategies available and their results when managing residual MR after TEER.

Methods: A literature search was undertaken across Pubmed, ScienceDirect, SciELO, DOAJ, and Cochrane library databases, to identify article reporting patients with post-TEER residual MR managed by a transcatheter approach that did not involve only the implantation of new clips.

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  • The study aims to assess the safety and efficacy of using expanded CD34+ cells for treating patients with acute myocardial infarction (AMI) and reduced left ventricular function, crucial for improving patient outcomes.
  • Patients with severe AMI (left ventricular ejection fraction <50%) are randomly assigned to receive either CD34+ cell treatment alongside standard care or standard care only, with a focus on monitoring major adverse cardiac events over six months.
  • This trial is groundbreaking as it explores the automated expansion and administration of autologous CD34+ cells, addressing current technological limitations in cell therapy for heart recovery post-AMI.
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Background: Atrial fibrillation (AF) has been identified as a marker of advanced cardiac damage in aortic stenosis patients. However, the factors associated with poorer outcomes among AF patients in contemporary transcatheter aortic valve replacement (TAVR) practice, particularly regarding mortality and heart failure (HF)-related hospitalizations, remain largely unknown.

Methods: In this multicenter study we assessed consecutive patients with a history of AF and evaluated the clinical outcomes, predictors of mortality, and HF-related hospitalization rates of those who underwent TAVR with newer generation devices using either balloon- or self-expandable valves.

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CXCL16 is a multifaceted chemokine expressed by macrophages and other immune cells in response to viral and bacterial pathogens. However, few studies have investigated its role in parasitic infections. The obligate intracellular parasite () is the causative agent of toxoplasmosis, an infection with potentially deleterious consequences in immunocompromised individuals and the developing fetus of acutely infected pregnant women.

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Despite recent clinical and technological advancements, the cardiac arrest survival rate remains as low as 10%. To enhance patient outcomes, it is crucial to deepen the understanding of cardiopulmonary resuscitation (CPR) at a fundamental level. Currently, there is a lack of knowledge on the physiological effects of CPR, in particular on the hemodynamics in the heart and the great vessels.

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  • Patients with mitral regurgitation (MR) and significant mitral annular calcification (MAC) face limited treatment options, making transcatheter mitral valve replacement (TMVR) an interesting area of study.
  • The research involved 279 patients, revealing that those with MAC had higher rates of post-procedural bleeding and renal failure but similar overall survival rates and functional improvement compared to those without MAC.
  • The findings suggest that while TMVR can be performed in MAC patients, it comes with increased complications, highlighting the need for more research on tailored TMVR devices for this group.
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Background: Large datasets of transcatheter aortic valve implantation (TAVI) for pure aortic valve regurgitation (PAVR) are scarce.

Aims: We aimed to report procedural safety and long-term clinical events (CE) in a contemporary cohort of PAVR patients treated with new-generation devices (NGD).

Methods: Patients with grade III/IV PAVR enrolled in the FRANCE-TAVI Registry were selected.

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Leukemia inhibitory factor, a member of the interleukin-6 cytokine family, plays a central role in homeostasis and disease. Interestingly, some of the pleiotropic effects of leukemia inhibitory factor have been attributed to the modulation of macrophage functions although the molecular underpinnings have not been explored at a genome-wide scale. Herein, we investigated leukemia inhibitory factor-driven transcriptional changes in murine bone marrow-derived macrophages by RNA sequencing.

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Giant exoplanets orbiting close to their host stars are unlikely to have formed in their present configurations. These 'hot Jupiter' planets are instead thought to have migrated inward from beyond the ice line and several viable migration channels have been proposed, including eccentricity excitation through angular-momentum exchange with a third body followed by tidally driven orbital circularization. The discovery of the extremely eccentric (e = 0.

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Purpose: Suboptimal communication with clinicians, fragmented care and failure to align with patients' preferences are determinants of post intensive care unit (ICU) burden in family members. Our aim was to evaluate the impact of a nurse facilitator on family psychological burden.

Methods: We carried out a randomised controlled trial in five ICUs in France comparing standard communication by ICU clinicians to additional communication and support by nurse facilitators.

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Structural valve deterioration after aortic root replacement (ARR) surgery may be treated by transcatheter valve-in-valve (ViV-TAVI) intervention. However, several technical challenges and outcomes are not well described. The aim of the present review was to analyze the outcomes of ViV-TAVI in deteriorated ARR.

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  • The study investigates the differences in outcomes between two types of failed transcatheter heart valves (balloon-expandable valves vs. self-expanding valves) during surgical explantation.
  • Analyzing data from 401 patients, it reveals that failed balloon-expandable valves had higher rates of certain complications like endocarditis and paravalvular leaks compared to self-expanding valves.
  • Overall, mortality rates and stroke rates were similar across both groups post-explantation, but concomitant mitral surgery emerged as a significant independent predictor of 1-year mortality for both valve types.
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An increasing number of patients experience late valvular disease after heart transplantation (HTx). While mostly being primarily addressed through surgical interventions, transcatheter valve procedures to treat these conditions are rising, particularly for unsuitable surgical candidates. This review aims at analyzing the outcomes of transcatheter valvular procedures in this subset of patients.

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Tricuspid regurgitation is a frequent condition that is linked to an elevated risk of cardiovascular events and significant mortality but is often overshadowed by left-sided valve diseases. Isolated surgical tricuspid valve surgery is still considered a high-risk surgery, and over recent years, various transcatheter procedures for tricuspid treatment have emerged as an alternative solution. Among the available transcatheter procedures, the EVOQUE system's transcatheter tricuspid valve replacement could potentially offer a solution, especially in patients considered non-eligible for transcatheter edge-to-edge tricuspid valve repair.

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A 75-year-old female patient was referred to our institution for severe symptomatic low-flow low-gradient aortic valve stenosis and tricuspid valve regurgitation (TR) associated with heart failure. After multidisciplinary discussion, the patient was scheduled for one-stage totally percutaneous treatment of her valve lesions by transcatheter aortic valve implantation (TAVI) and transcatheter edge-to-edge tricuspid valve repair (TEER) through transfemoral access. The patient had an uneventful hospital stay and was discharged home on the third postoperative day.

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  • There has been a significant increase in the use of transcatheter aortic valve implantation (TAVI) to treat symptomatic severe aortic stenosis, prompting the need for streamlined procedures in specialized Heart Valve Centres.
  • The 2022 European TAVI Pathway Survey collected input from 147 TAVI centres in 26 countries, revealing details about their procedural practices and patient management.
  • Findings indicate that while minimalist TAVI methods are widely adopted, many patients still experience longer hospital stays, suggesting room for improvement in discharge processes.
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Cereal-legume intercropping has been traditionally practiced across West Africa by farmers and provides resilience of agriculture to climate variability. Intensification of these extensive intercropping systems in order to meet future food demand is critical. This study aims at evaluating the agronomic performance of the intensification of millet-cowpea intercropping with low cowpea density, and its variation with climate variability, using an on-station experiment in Bambey, Senegal.

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Objectives: The aim of this study was to investigate the impact of Valve Academic Research Consortium 3 minor access site vascular complications (VCs) in patients who underwent percutaneous transfemoral (TF) transcatheter aortic valve implantation (TAVI).

Methods: This single-centre retrospective study included consecutive patients who underwent percutaneous TF-TAVI from 2009 to 2021. A propensity score-matched analysis was performed to compare early and long-term clinical results between patients with VC and without VC (nVC).

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Polyclonal B cell activation and the resulting hypergammaglobulinemia are a detrimental consequence of visceral leishmaniasis (VL); however, the mechanisms underlying this excessive production of nonprotective antibodies are still poorly understood. Here, we show that a causative agent of VL, Leishmania donovani, induces CD21-dependent formation of tunneling nanotubule (TNT)-like protrusions in B cells. These intercellular connections are used by the parasite to disseminate among cells and propagate B cell activation, and close contact both among the cells and between B cells and parasites is required to achieve this activation.

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