Publications by authors named "Muriel Picard"

Article Synopsis
  • A study examined the mortality and factors affecting outcomes for 1,164 patients who underwent allogeneic hematopoietic stem-cell transplantation and were admitted to ICUs in France from 2015 to 2020.
  • The findings revealed a 90-day mortality rate of 48%, with higher risks linked to age, time from transplant to ICU admission, and the need for invasive treatments like vasopressors and mechanical ventilation.
  • Despite high mortality rates, many critically ill patients who received intensive care did survive their ICU stays, prompting the need for a careful evaluation of treatment options for those with multiple risk factors.
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Article Synopsis
  • Invasive fusariosis is a serious fungal infection that particularly threatens immunocompromised patients in intensive care, with a
  • mortality rate of 56%
  • identified in a study of 55 cases in French ICUs.
  • Most patients (76%) developed pneumonia, which often resulted in
  • acute respiratory failure
  • Key risk factors for increased mortality include high organ failure scores at ICU admission and prior history of
  • stem cell transplantation or hematologic cancers
  • , highlighting the need for careful monitoring in at-risk patients.
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Background: Necrotizing soft tissue infections (NSTIs) are rare life-threatening bacterial infections. Few data are available regarding neutropenic patients with NSTIs. Our objectives were to describe the characteristics and management of neutropenic patients with NSTIs in intensive care units (ICUs).

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  • The study explores the role of the transcription factor CCAAT-enhancer binding protein α (C/EBPα) in lipid metabolism and cellular homeostasis in acute myeloid leukemia (AML), particularly with mutations in FLT3.
  • Researchers found that C/EBPα and FLT3 activation enhance lipid production and desaturation in AML cells, leading to increased vulnerability to oxidative stress.
  • Inhibiting C/EBPα or FLT3 demonstrates potential for therapeutic strategies targeting lipid metabolism to promote ferroptotic cell death in FLT3-mutant AML, a type of leukemia affecting 30% of patients.
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Introduction: The aim of this study was to evaluate the indications and management of grade III-IV postoperative complications in patients requiring vacuum-assisted open abdomen after debulking surgery for ovarian carcinomatosis.

Methods: Retrospective study of prospectively collected data from patients who underwent a cytoreductive surgery by laparotomy for an epithelial ovarian cancer that required postoperative management of an open abdomen. An abdominal vacuum-assisted wound closure (VAWC) was applied in cases of abdominal compartmental syndrome (ACS) or intra-abdominal hypertension, to prevent ACS.

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Article Synopsis
  • Acute myeloid leukemia (AML) is linked to leukemic stem cells (LSC), which affect patient responses to chemotherapy and overall survival, highlighting the importance of measuring LSC levels.
  • A study evaluated 155 AML patients post-chemotherapy to assess the effectiveness of detecting measurable residual disease (MRD) in both bulk and LSC populations, using unsupervised clustering methods.
  • Results showed a significant difference in overall survival rates between patients with positive MRD and those who tested negative, with some patients having negative Bulk MRD but positive LSC MRD, indicating these individuals have an intermediate prognosis.
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  • Researchers have developed a new classification system for acute myeloid leukemia (AML) using flow cytometry to identify six stages of differentiation arrest in leukemic cells based on specific protein expressions.
  • The study analyzed two patient cohorts and found that different types of AML (stem cell-like versus progenitor-like) display distinct genetic characteristics, proliferation rates, and treatment responses, which influence patient outcomes.
  • Factors such as NPM1 mutations are associated with more mature leukemia stages, while other genetic mutations (like CEBPA and RUNX1) help predict the severity and treatment efficacy for AML patients.
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Purpose: To study prevalence of targeted therapy (TT)-related adverse events requiring ICU admission in solid tumor patients.

Methods: Retrospective multicenter study from the Nine-i research group. Adult patients who received TT for solid tumor within 3 months prior to ICU admission were included.

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  • Therapy resistance is a big issue in treating acute myeloid leukemia (AML), and researchers have created a 'MitoScore' to identify patients with high oxidative phosphorylation in their cells.
  • AML cells that resist treatment with cytarabine (AraC) show reliance on certain mitochondrial proteins and respond well to a combination of venetoclax (VEN) and AraC, but not to VEN with azacytidine.
  • Further research found that resistant AML cells adapt by altering their mitochondrial functions, and targeting these adaptations could improve treatment outcomes, suggesting a potential strategy to alternate between VEN therapies based on MitoScore levels to boost effectiveness.
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The immune effector cell-associated syndrome (ICANS) has been described as the second most frequent specific complication following CAR-T cell therapy. The median time to the onset of neurological symptoms is five days after CAR-T infusion. ICANS can be concomitant to cytokine release syndrome but often follows the resolution of the latter.

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The use of chimeric antigen receptor T cells (CAR-T) has increased since their approval in the treatment of several relapsed/refractory B cell malignancies. The management of their specific toxicities, such as cytokine release syndrome (CRS), tends to be better understood and well-defined. During the twelfth edition of practice harmonization workshops of the Francophone Society of Bone Marrow Transplantation and Cellular Therapy (SFGM-TC), a working group focused its work on the management of patients developing CRS following CAR-T cell therapy.

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Infections occurring after CAR T-cells are a common complication. At the acute phase of treatment following CAR T-cell infusion, the exact incidence of infections is unknown given the overlapping symptoms with cytokine release syndrome. The risk factors for infection include the malignant underlying disease and its multiple treatments, and an immunosuppressive state induced by CAR-T cells themselves and the treatment of their complications.

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Objectives: Geotrichum spp can be responsible for severe infections in immunocompromised patients. We aim to describe Geotrichum-related infections in the ICU and to assess risk factors of mortality.

Methods: Retrospective multicentre study, conducted in 14 French ICUs between 2002 and 2018, including critically ill adult patients with proven or probable infection related to Geotrichum species.

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Little is known about patients with sickle cell disease (SCD) who require intensive care unit (ICU) admission. The goals of this study were to assess outcomes in patients admitted to the ICU for acute complications of SCD and to identify factors associated with adverse outcomes. This multicenter retrospective study included consecutive adults with SCD admitted to one of 17 participating ICUs.

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CAR-T cells are an innovative treatment for an increasing number of patients, particularly since the extension of their indication to mantle lymphoma and multiple myeloma. Several complications of CAR T-cell therapy, that were first described as exceptional, have now been reported in series of patients, since its first clinical use in 2011. Among them, cardiac complications, delayed cytopenias, acute and chronic Graft versus Host Disease, and tumoral lysis syndrome are recognized as specific potent complications following CAR T-cells infusion.

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Usually responsible for soft tissue infections, species can also cause bacteremia, life-threatening infections often requiring intensive care unit (ICU) admission. We conducted a multicenter retrospective study to investigate bacteremia in ICUs to describe the clinical and biologic characteristics and outcomes in critically ill patients. We identified 135 patients with bacteremia, which occurred almost exclusively (96%) in patients with underlying conditions.

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Background: Chimeric antigen receptor (CAR) T-cell therapy can induce side-effects such as cytokine release syndrome and immune effector cell-associated neurotoxicity syndrome (ICANS), which often require intensive care unit admission. The aim of this study was to describe management of critically ill CAR T-cell recipients in intensive care.

Methods: This international, multicentre, observational cohort study was done in 21 intensive care units in France, Spain, the USA, the UK, Russia, Canada, Germany, and Austria.

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Article Synopsis
  • Sinusoidal obstruction syndrome (SOS) is a dangerous liver problem that can happen after high-dose chemotherapy, and the only approved treatment for it is defibrotide.
  • In a study of 71 patients in tough medical situations due to SOS, many needed help for their breathing and kidneys, and 54% sadly did not survive the hospital stay.
  • Older patients and those needing special machines to help with breathing or kidney function had a higher risk of dying, but using defibrotide for prevention seemed to help some patients do better.
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Background: Gastric perforation after cytoreductive surgery (CRS) is an infrequent complication. There is lack of evidence regarding the risk factors for this postoperative complication. The aim of this study was to assess the prevalence of postoperative gastric perforation in patients undergoing CRS for peritoneal carcinomatosis (PC) and to evaluate risk factors predisposing to this complication.

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The aims of this study were to characterize the incidence and outcomes of severe toxicities following the administration of high-dose methotrexate (HD-MTX; ≥1 g/m). Among the 468 patients included in the study, 69 (14.9%) developed at least one episode of acute kidney injury (AKI; 138/1264 HD-MTX administrations), including 34 (7.

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Relapses driven by chemoresistant leukemic cell populations are the main cause of mortality for patients with acute myeloid leukemia (AML). Here, we show that the ectonucleotidase CD39 (ENTPD1) is upregulated in cytarabine-resistant leukemic cells from both AML cell lines and patient samples and . CD39 cell-surface expression and activity is increased in patients with AML upon chemotherapy compared with diagnosis, and enrichment in CD39-expressing blasts is a marker of adverse prognosis in the clinics.

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