Publications by authors named "Arlet J"

Background: Intravenous (IV) access is often required for the treatment of vaso-occlusive crises in patients with sickle cell disease, but can be particularly challenging due to recurrent venous damage. The AccuVein® device, uses near-infrared light technology to visualise veins for easier venepuncture.

Methods: A randomised, controlled trial of the efficacy of the AccuVeinAV400® device in the replacement of peripheral venous lines during a vaso-occlusive crisis was conducted at two centres in France.

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Introduction: Extramedullary hematopoiesis (EMH) is very rarely described during sickle cell disease (SCD). Our aim was to describe six cases of EMH occurring in adult SCD patients and to conduct a literature review.

Methods: Retrospective, descriptive, and monocentric study, identifying all cases of EMH recorded in our cohort of adult SCD patients, up to April 2024.

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While the coronavirus disease-2019 (COVID-19) might have increased acute episodes in people living with sickle cell disease (SCD), it may also have changed their reliance on emergency department (ED) services. We assessed the impact of the COVID-19 pandemic and lockdowns on ED visits in adult SCD people followed in five French reference centres, with a special focus on 'high users' (≥10 visits in 2019). We analysed the rate of ED visits from 1 January 2015 to 31 December 2021, using a self-controlled case series.

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The Ghent Altarpiece, a jewel of Gothic art painted by the van Eyck brothers in the fifteenth century, is particularly noteworthy for its use of an innovative dilution of oil, giving it a realistic scope that is particularly conducive to iconodiagnostic hypotheses. For the first time in the literature, we are taking a medical look at this masterpiece, and more specifically at the representation of its patron, whose identity is well known: Joos Vijd, a powerful notable from the town of Ghent, in modern-day Belgium. A vascular turgidity of the temporal artery, which can be suggestive of temporal arteritis, Hertoghe's sign and a slight ear crease were observed.

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The prognosis of sickle cell disease (SCD) in adults is determined primarily by damage to targeted organs such as the brain. Cognitive dysfunction in SCD is a common chronic neurological manifestation, but studies remain mostly descriptive in adults. The objective of this study was to better characterize the cognitive profile and the association between cognitive dysfunction and brain lesions.

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Few studies have used validated scales to assess the intensity and determinants of fatigue, a major symptom of sickle cell disease (SCD). We aimed to assess the level of basal fatigue in adult patients with SCD, using the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-Fatigue) questionnaire. We prospectively included 102 stable adult outpatients with SCD over 2 months, who answered the FACIT-Fatigue (ranging from 0 (worst imaginable fatigue) to 52 (no fatigue)) and reported on the intensity of fatigue and its impact on quality of life.

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Article Synopsis
  • Ageing affects immune responses, increasing the risk of infections like COVID-19 in older adults, particularly through factors related to cytotoxic T cells and chronic inflammation.* -
  • In a study of 104 patients over 70, severe COVID-19 correlated with higher levels of specific cytokines (like GM-CSF and IL-1β) and changes in CD8 T cell populations, including more terminally differentiated cells and fewer stem cell-like memory cells.* -
  • The findings suggest that certain cytokines are key indicators of COVID-19 severity in older patients and emphasizes the need for tailored care approaches based on these immune changes in this age group.*
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Background: Historically, sickle cell disease (SCD) patients experiencing frequent hospitalized vaso-occlusive crises (HVOC) have been associated with increased mortality, yet recent data reflecting the widespread use of hydroxyurea and advancements in disease management remain limited. Our study aims to assess the association between HVOC and mortality or severe complications in patients with SCD in this new treatment landscape.

Methods: This was a retrospective observational cohort study using the French national health data system.

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The variability of movement plays a crucial role in shaping individual's gait pattern and could, therefore, potentially serve diagnostic purposes. Nevertheless, existing concepts for the use of variability in diagnosing gait present a challenge due to the lack of adequate benchmarks and methods for comparison. We assessed the individuality of contribution of foot parts that directly mediate the transmission of forces between the foot and the ground in body weight shifting during walking based on 200 pedobarometric measurements corresponding to the analysed foot parts for each of 19 individuals in a homogeneous study group.

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Purpose: To describe the experience of performing ovarian tissue cryopreservation (OTC) before hematopoietic stem cell transplantation (HSCT), among girls/women with severe sickle cell disease (SCD)(SS or S/β-thalassemia) who are, besides the usual surgical risk, at risk of SCD-related complications during the fertility preservation procedure for improving their counseling and management.

Methods: This retrospective study included 75 patients (girls/women) with SCD who have had OTC before myeloablative conditioning regimen (MAC) for HSCT. Characteristics of patients and data on OTC, ovarian status follow-up, and results of ovarian tissue transplantation (OTT) were collected in medical records.

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Article Synopsis
  • The study aimed to identify risk factors for arterial and venous thromboses (AVT) in COVID-19 pneumonia patients requiring oxygen while hospitalized.
  • During a 3-month follow-up of 388 patients, 10% experienced AVT, with diabetes and high C-reactive protein (CRP) levels linked to increased risk, while obesity showed no significant association.
  • The findings suggest that monitoring diabetes and CRP levels in hospitalized COVID-19 patients is crucial, and higher anticoagulant doses might be beneficial for those identified as high-risk.
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Article Synopsis
  • The study aimed to find patterns in eye conditions for patients with sickle cell disease using a new technology called optical coherence tomography angiography.* -
  • They looked at 132 patients and found typical eye problems in many, but also some unusual ones, like thinning of parts of the retina without the usual issues.* -
  • The findings suggest that these unusual conditions might be early signs of future eye problems and could be caused by different factors, like blood flow issues or nerve problems.*
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Purpose: To identify risk factors for sickle cell maculopathy due to hematological parameters (especially anemia and hemolysis) or cerebral vasculopathy.

Methods: This retrospective study was conducted at a Referral Center. The follow-up included optical coherent tomographyoptical coherent tomography angiography, neuro-radiological imaging, and a hematological assessment hemoglobin, hemoglobin S level, reticulocytes, mean corpuscular volume, bilirubin, and lactate dehydrogenase).

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Background: Venous thromboembolism is a major complication of coronavirus disease 2019 (COVID-19). We hypothesized that a weight-adjusted intermediate dose of anticoagulation may decrease the risk of venous thromboembolism COVID-19 patients.

Methods: In this multicenter, randomised, open-label, phase 4, superiority trial with blinded adjudication of outcomes, we randomly assigned adult patients hospitalised in 20 French centers and presenting with acute respiratory SARS-CoV-2.

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We present a case report of transbronchial cryobiopsy proven diffuse amyloid cystic lung disease complicating a homozygous Val122Ile (V122I) transthyretin mutated amyloidosis (ATTRm). To the best of our knowledge, this is the first case in the literature reporting such pulmonary lesions in ATTRm amyloidosis, and notably diagnosed through cryobiopsy. A 51-year-old man from Mali with a past medical history of bilateral carpal tunnel syndrome presented erectile dysfunction, asthenia and worsening dyspnoea over the past year.

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THERAPEUTIC APPROACHES IN SICKLE CELL DISEASE. Sickle cell disease, the most common genetic disease in France, is still burdened with morbidity and early mortality before the age of 50. When the first-line treatment, hydroxyurea, is insufficient or in the case of organic damage(s) (in particular cerebral vasculopathy), a therapeutic intensification must be considered.

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