Publications by authors named "Pradere P"

Article Synopsis
  • The study investigates the immune mechanisms behind chronic lung allograft dysfunction (CLAD), which hampers long-term survival after lung transplants, using advanced tissue imaging techniques.
  • Researchers analyzed lung tissue from 23 transplant recipients, identifying differences in immune cell populations associated with CLAD versus non-CLAD conditions.
  • Key findings show that specific immune cells, like cytotoxic T cells and γδ T cells, expand in CLAD, highlighting unique characteristics in different CLAD phenotypes and offering new insights into how fibrosis progresses in these conditions.*
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Background: The age profile of organ donors and patients on lung transplantation (LT) waiting lists have changed over time. In Europe, the donor population has aged much more rapidly than the recipient population, making allocation decisions on lungs from older donors common. In this study we assessed the impact of donor and recipient age discrepancy on LT outcomes in the UK and France.

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Background: Lung or heart-lung transplantation (LT/HLT) for severe pulmonary hypertension (PH) as the primary disease indication carries a high risk of waiting list mortality and post-transplant complications. France and the UK both have coordinated PH patient services but with different referral pathways for accessing LT services.

Methods: We conducted a comparative analysis of adult PH patients listed for LT/HLT in the UK and France.

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Maintenance of long-term lung allograft health in lung transplant recipients (LTRs) requires a fine balancing act between providing sufficient immunosuppression to reduce the risk of rejection whilst at the same time not over-immunosuppressing individuals and exposing them to the myriad of immunosuppressant drug side-effects that can cause morbidity and mortality. At present, lung transplant physicians only have limited and rather blunt tools available to assist them with this task. Although therapeutic drug monitoring provides clinically useful information about single time point and longitudinal exposure of LTRs to immunosuppressants, it lacks precision in determining the functional level of immunosuppression that an individual is experiencing.

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The data presented in this article were collected in the field at an experimental station in southern France under a Mediterranean climate. Experiments were conducted under three plastic walk-in tunnels used as blocks with organic farming practices over two successive years in a completely randomized design. The aim was to compare the intercropping of sweet pepper with basil, onion, lettuce, parsley or French bean to a sole crop of sweet pepper used as a control.

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Chronic lung rejection, also called chronic lung allograft dysfunction (CLAD), remains the major hurdle limiting long-term survival after lung transplantation, and limited therapeutic options are available to slow the progressive decline in lung function. Most interventions are only temporarily effective in stabilizing the loss of or modestly improving lung function, with disease progression resuming over time in the majority of patients. Therefore, identification of effective treatments that prevent the onset or halt progression of CLAD is urgently needed.

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Improving the well-being at work of caregivers is a major challenge for our healthcare system. Both global and local solutions must be proposed. At the Marie-Lannelongue hospital, located in the Paris region, a structure dedicated to the well-being of caregivers at work, the "Bubble", has been set up.

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Background: Thymic malignancies are rare tumors about which data are limited. Our objective here was to evaluate the outcomes and risk factors for complications and death in patients who underwent extended surgery to remove thymic malignancies.

Methods: We retrospectively included patients who underwent extended resection of locally advanced, nonmetastatic thymic malignancies at our institution.

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Introduction: Despite the increasing importance of digital resources in modern life over the past decades, little is known about the impact of internet-based solutions on patient's health. We aimed to study the potential benefit of a digital platform helping patients to deal with abnormal chest CT scan revealing possible lung cancer.

Methods: We set up a fast-track lung cancer diagnosis pathway through a secure online platform.

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Introduction: Eligibility criteria definition for a lung cancer screening (LCS) is an unmet need. We hypothesised that patients with a history of atheromatous cardiovascular disease (ACVD) associated with tobacco consumption are at risk of lung cancer (LC). The main objective is to assess LC prevalence among patients with ACVD and history of tobacco consumption by using low-dose chest CT scan.

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Background: Generalised oedema was occasionally reported associated with immune checkpoint inhibitors (ICPIs). The purpose of this study is to investigate immune-related generalised oedema (ir-GE) drug related to ICPI, through frequency, clinical and pathological characteristics, and patient's outcome.

Patients And Methods: Objectives of the study were to report on ir-GE associated with ICPI to define frequency, associated signs and symptoms, pathological characteristics, severity, and response to corticosteroids.

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Article Synopsis
  • En-bloc complete resection is the preferred method for treating localized chest wall tumors, with titanium bar reconstruction showing good early results but limited long-term data available.
  • A study reviewed 68 patients from 2012 to 2018 who had CW tumor resections and titanium repairs, achieving a 94% complete resection rate and tracking survival outcomes over time.
  • Results indicated that there were decent survival rates at 1, 3, and 5 years, with some complications including surgical site infections and chronic pain, but no reports of titanium allergy or flail chest.
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Unlike the well-documented effects of tobacco smoke on the lung, the effects of cannabis smoke remain controversial, the main bias consisting in co-consumption of tobacco. That said, the composition of joint smoke is close to that of cigarettes, containing many compounds that are carcinogenic and/or alter the respiratory epithelium. Confirmed respiratory effects in chronic cannabis smokers include aggravated chronic bronchitis symptoms, a cumulative effect with tobacco on COPD and emphysema occurrence, an increased risk of bullous emphysema, and pneumothorax with heightened risk of recurrence after pleural symphysis.

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Objectives: Primary thoracic synovial sarcoma (SS) is a rare, high-grade, malignancy. Involvement of vital organs is frequent and may decrease the benefits of surgical resection. We reviewed our practice at a highly experienced thoracic-surgery centre to assess early- and long-term outcomes after surgery.

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Background: It is unknown whether pulmonary arterial hypertension (PAH) risk stratification instruments could be helpful to support the decision to list a patient for lung transplantation (LT). Our aim was to evaluate contemporary risk assessment tools in a cohort of PAH patients listed for LT.

Methods: Consecutive PAH patients (without pulmonary veno-occlusive disease or unrepaired congenital heart disease) listed for LT at the French Pulmonary Hypertension Reference Center between January 2006 and December 2018 were included.

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We aimed to review the clinical and biological presentation of granulomatosis associated with immune-checkpoint inhibitors (ICI) in patients with melanoma and to explore its association with classical sarcoidosis as well as with cancer response to ICI. To this end, a retrospective study on 18 melanoma patients with histologically proven ICI-induced granulomatosis over a 12-year period in a single center, as well as on 67 similar cases reported in the literature, was conducted. Results indicate ICI-induced granulomatosis is an early side effect (median time to onset: 2 months).

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The use of immune checkpoint inhibitors (ICIs) has drastically transformed the therapeutic landscape in lung cancer. Special focus has been put on immune-related toxicity; however, infections can also seem during ICI treatment. Although rare, tuberculosis (TB) has been increasingly identified after ICIs, and it seems that the programmed cell death protein 1 and programmed death-ligand 1 pathway is directly involved in its pathophysiology.

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Objectives: We aimed to understand the immune response among healthcare workers (HCWs) following SARS-CoV-2 infection, and to determine the infection prevalence during the first wave of the pandemic among workers in our hospital.

Methods: Determination of the serological status against SARS-CoV-2 (nucleocapsid) was offered to all HCWs. All HCWs with positive SARS-CoV-2 serology were proposed to be included in a longitudinal medical and serological follow-up (anti-spike) for 7months.

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Background: Surgical lung biopsy is essential in the diagnostic algorithm of interstitial lung disease (ILD) of unknown cause. Safety concerns have been recently reiterated. This study prospectively assessed the yield of diagnosis and safety of video-assisted thoracoscopic surgical lung biopsy (VATS-LB) for ILD diagnosis.

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Objective: To analyse the clinical patterns of sarcoidosis triggered by immune checkpoint inhibitors (ICIs) in patients with cancer.

Patients And Methods: The ImmunoCancer International Registry is a big data-sharing multidisciplinary network from 18 countries dedicated to evaluating the clinical research of immune-related adverse events related to cancer immunotherapies.

Results: We identified 32 patients with biopsy-proven sarcoidosis.

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Unlabelled: We sought to determine whether invasive aspergillosis (IA) during the first year after lung transplantation increased the risk of chronic lung allograft dysfunction (CLAD).

Methods: We retrospectively reviewed the records of 191 patients who underwent lung transplantation at our institution between January 2013 and December 2017. Screening for was with bronchial aspirates, bronchoalveolar lavage if indicated or during surveillance bronchoscopy, radiography, and computed tomography.

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Article Synopsis
  • Lung cancer is often treated with surgery, but many patients also deal with pulmonary hypertension (PH), which complicates their care and may even lead to surgery being denied.
  • A literature review focused on the challenges and guidelines associated with lung resection in patients with PH highlights the importance of thorough preoperative assessments.
  • Expert recommendations emphasize the need for specialized evaluation and management to improve outcomes for lung cancer patients with pulmonary hypertension.
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