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  1. Article ; Online: Trend in respiratory viruses' activity in the COVID-19 area.

    Farfour, Éric / Rouabah, Lamia / Bargain, Pauline / Lecuru, Marion / Picard, Clément / Tcherakian, Colas / Maneglier, Benjamin / Juillet, Stéphanie Marque / Vasse, Marc

    Annales de biologie clinique

    2023  Volume 81, Issue 4, Page(s) 403–409

    Abstract: Objectives: SARS-CoV-2 has impacted the detection of seasonal respiratory viruses. We retrospectively assessed the trend in the detection of 10 viruses in the COVID-19 area in 2 hospitals located in the Paris area.: Methods: All patients positive for ...

    Abstract Objectives: SARS-CoV-2 has impacted the detection of seasonal respiratory viruses. We retrospectively assessed the trend in the detection of 10 viruses in the COVID-19 area in 2 hospitals located in the Paris area.
    Methods: All patients positive for a respiratory virus in two hospitals from September 2016 to August 2021 were retrospectively included. The rate of RT-PCR positive for each virus was calculated for the 2020-2021 season and the 2019-2020 season in comparison to a baseline of 3 seasons, i.e. 2016-2017, 2017-2018, and 2018-2019.
    Results: Overall, 7,835 patients were tested positive from September 2016 to August 2021. The detection of respiratory virus dramatically falls on week-11 of 2020, as the number of RT-PCR performed. Then, 3 trends were identified: a) almost a disappearance for influenza; b) a 10-weeks delay in the seasonal outbreak for RSV; c) a persistence of circulation with variable activity for other viruses. In comparison to a baseline of three seasons (2016-2019), the rate of positive patients was lower during the 2020-2021 season for coronavirus (4.51% vs. 1.26%, P < 0.0001), adenovirus (1.93% vs. 1.34%, P = 0.14), bocavirus (0.58% vs. 0.11%, P = 0.08), and enterovirus (0.28% vs. 0.0%, P = 0.12). In contrast, the rate of hMPV-positive (1.92% vs. 2.83%, P = 0.03) and hPIV-positive (2.17% vs. 2.99%, P = 0.06) patients increased.
    Conclusions: The fall in the number of respiratory viruses detected might be related to the lower number of tests performed and the implementation of non pharmaceutical intervention (NPI). Then, all viruses except influenza are detected, probably as a consequence of high adherence to influenza vaccines. Despite, a lower number of tests being performed, the rate of hMPV-positive and hPIV-positive patients increased suggesting an active circulation of these viruses. Altogether, these findings suggest a persistent circulation of common respiratory viruses all over the COVID-19 era.
    MeSH term(s) Humans ; Infant ; Influenza, Human/epidemiology ; Retrospective Studies ; COVID-19/diagnosis ; COVID-19/epidemiology ; SARS-CoV-2 ; Viruses ; Respiratory Tract Infections/diagnosis ; Respiratory Tract Infections/epidemiology
    Language English
    Publishing date 2023-10-20
    Publishing country France
    Document type Journal Article
    ZDB-ID 418098-7
    ISSN 1950-6112 ; 0003-3898
    ISSN (online) 1950-6112
    ISSN 0003-3898
    DOI 10.1684/abc.2023.1827
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Transplantation pulmonaire.

    Stern, Marc / Picard, Clément / Roux, Antoine

    La Revue du praticien

    2019  Volume 68, Issue 2, Page(s) 189–194

    Abstract: Lung transplantation. Lung transplantation is one therapeutic option for selected patients with end stage respiratory insufficiency secondary mainly to emphysema, pulmonary fibrosis and cystic fibro sis. Because of increased number of graft proposals, ... ...

    Title translation Lung transplantation.
    Abstract Lung transplantation. Lung transplantation is one therapeutic option for selected patients with end stage respiratory insufficiency secondary mainly to emphysema, pulmonary fibrosis and cystic fibro sis. Because of increased number of graft proposals, priority access to transplantation for the more severe patients (High Emergency program) and the ex vivo reperfusion, the annual number of lung transplantations rose in France up to 371 in 2016. Global survival greatly improved at first because of perioperative and early mortality reduction. Then the main challenges for the long term survival are the prevention and treatment of graft rejection including its cellular/humoral and acute/chronic component and the improvement of the preventive immunosuppressive treatment taking into account its increased risk of infectious, proliferative and metabolic complications. At least, with appropriate evaluation of risk/ benefit balance, lung transplantation is associated not only with an increased survival but also with a clear improvement of the quality of life.
    MeSH term(s) France ; Graft Rejection ; Humans ; Lung Transplantation ; Pulmonary Fibrosis ; Quality of Life
    Language French
    Publishing date 2019-02-05
    Publishing country France
    Document type Journal Article
    ZDB-ID 205365-2
    ISSN 2101-017X ; 0035-2640
    ISSN (online) 2101-017X
    ISSN 0035-2640
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Lung Transplantation: CT Assessment of Chronic Lung Allograft Dysfunction (CLAD).

    Brun, Anne-Laure / Chabi, Marie-Laure / Picard, Clément / Mellot, François / Grenier, Philippe A

    Diagnostics (Basel, Switzerland)

    2021  Volume 11, Issue 5

    Abstract: Chronic lung allograft rejection remains one of the major causes of morbi-mortality after lung transplantation. The term Chronic Lung Allograft Dysfunction (CLAD) has been proposed to describe the different processes that lead to a significant and ... ...

    Abstract Chronic lung allograft rejection remains one of the major causes of morbi-mortality after lung transplantation. The term Chronic Lung Allograft Dysfunction (CLAD) has been proposed to describe the different processes that lead to a significant and persistent deterioration in lung function without identifiable causes. The two main phenotypes of CLAD are Bronchiolitis Obliterans Syndrome (BOS) and Restrictive Allograft Syndrome (RAS), each of them characterized by particular functional and imaging features. These entities can be associated (mixed phenotype) or switched from one to the other. If CLAD remains a clinical diagnosis based on spirometry, computed tomography (CT) scan plays an important role in the diagnosis and follow-up of CLAD patients, to exclude identifiable causes of functional decline when CLAD is first suspected, to detect early abnormalities that can precede the diagnosis of CLAD (particularly RAS), to differentiate between the obstructive and restrictive phenotypes, and to detect exacerbations and evolution from one phenotype to the other. Recognition of early signs of rejection is crucial for better understanding of physiopathologic pathways and optimal management of patients.
    Language English
    Publishing date 2021-04-30
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2662336-5
    ISSN 2075-4418
    ISSN 2075-4418
    DOI 10.3390/diagnostics11050817
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Online: Fluid-particle suspension by gas release from a granular bed

    Homan, Tess / Vidal, Valérie / Picard, Clément / Joubaud, Sylvain

    2020  

    Abstract: We have studied experimentally particle suspension when injecting a gas at the bottom of an immersed granular layer confined in a Hele-Shaw cell. This work focuses on the dynamics of particles slightly denser than the surrounding fluid. The gas, injected ...

    Abstract We have studied experimentally particle suspension when injecting a gas at the bottom of an immersed granular layer confined in a Hele-Shaw cell. This work focuses on the dynamics of particles slightly denser than the surrounding fluid. The gas, injected at constant flow-rate, rises through the granular bed then forms bubbles which entrain particles in the above liquid layer. The particles settle down on the edges of the cell, avalanche on the crater formed at the granular bed free surface, and are further entrained by the continuous bubbling at the center. We report the existence of a stationary state, resulting from the competition between particle entrainment and sedimentation. The average solid fraction in the suspension is derived from a simple measurement of the granular bed apparent area. A phenomenological model based on the balance between particle lift by bubbles at the center of the cell and their settling on its sides demonstrates that most of the particles entrained by bubbles come from a global recirculation of the suspension.
    Keywords Physics - Fluid Dynamics ; Physics - Classical Physics
    Subject code 660
    Publishing date 2020-11-30
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Clinical impact of TERT somatic mutation in telomerase-related gene mutation carriers after lung transplantation.

    Ba, Ibrahima / Kannengiesser, Caroline / Mal, Hervé / Reynaud-Gaubert, Martine / Cottin, Vincent / Hirschi, Sandrine / Picard, Clément / Borie, Raphael

    The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation

    2022  Volume 41, Issue 9, Page(s) 1207–1209

    Abstract: Almost 25% of patients with pulmonary fibrosis referred for lung transplantation have a germline rare variant of a telomere-related gene. Acquired TERT promoter mutations may counterbalanced the germline defect and reduce the risk of hematological ... ...

    Abstract Almost 25% of patients with pulmonary fibrosis referred for lung transplantation have a germline rare variant of a telomere-related gene. Acquired TERT promoter mutations may counterbalanced the germline defect and reduce the risk of hematological complications in this population. In a series of 34 patients with a germline telomere-related gene mutation who underwent lung transplantation, 12 (35%) patients had at least 1 acquired TERT promoter mutation. Six patients presented myelodysplasia before lung transplantation, with no difference between patients with and without an acquired TERT promoter mutation. After lung transplantation, myelodysplasia developed in only 1 of 8 patients with an acquired TERT promoter mutation versus 7 of 18 patients without a mutation. Survival did not differ between patients with and without an acquired mutation. The presence of an acquired TERT promoter mutation could be associated with reduced hematological complications after transplantation and with better outcome in telomere-related gene mutation carriers but requires further study.
    MeSH term(s) Heterozygote ; Humans ; Lung Transplantation ; Mutation ; Telomerase/genetics ; Telomerase/metabolism ; Telomere
    Chemical Substances TERT protein, human (EC 2.7.7.49) ; Telomerase (EC 2.7.7.49)
    Language English
    Publishing date 2022-06-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1062522-7
    ISSN 1557-3117 ; 1053-2498
    ISSN (online) 1557-3117
    ISSN 1053-2498
    DOI 10.1016/j.healun.2022.06.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Trans-arterial embolization for hemoptysis in lung transplant recipients.

    Gravel, Guillaume / Sage, Edouard / Cuquemelle, Elise / Roussel, Alexandre / Roux, Antoine / Glorion, Matthieu / Parquin, François / Mellot, François / Picard, Clément

    Respiratory medicine and research

    2022  Volume 82, Page(s) 100941

    Abstract: Introduction: Hemoptysis isn't rare in lung transplant recipients (LTR). Yet, trans-arterial embolization (TAE) in LTR has been rarely reported in the literature. The aim of the study was to present the feasibility and outcomes of TAE for hemoptysis in ... ...

    Abstract Introduction: Hemoptysis isn't rare in lung transplant recipients (LTR). Yet, trans-arterial embolization (TAE) in LTR has been rarely reported in the literature. The aim of the study was to present the feasibility and outcomes of TAE for hemoptysis in LTR.
    Materials and methods: Retrospective study of all LTR who underwent TAE for hemoptysis in our single institution between 2005 and 2020.
    Results: A total of 787 patients underwent lung transplantation between 2005 and 2020. Fifteen LTR underwent 21 TAE for hemoptysis in a median delay of 42 days after LT. TAE was performed within a year after LT in 13 patients (86.7%) with 12 of those patients having concomitant severe ischemic airway injury with necrosis and anastomotic dehiscence. Bronchoscopy confirmed bronchial anastomoses has being the source of the bleeding in 11 LTR (84.6%). Restoration of bronchial vascularization was highlighted in 13 patients (87%). Despite TAE, bronchial anastomosis healing was observed in all surviving patients with anastomotic dehiscence in a median delay of 43 days.
    Conclusion: In our experience, hemoptysis requiring TAE in LTR was rare, frequently occurring in the first weeks after LT, and seemed associated with anastomotic ischemia and dehiscence. Bleeding mainly originated from ischemic bronchial anastomosis through the restoration of the bronchial artery circulation. Our results suggest that bronchial arteriography should be routinely proposed in such patients in the event of hemoptysis.
    MeSH term(s) Humans ; Hemoptysis/etiology ; Hemoptysis/therapy ; Retrospective Studies ; Transplant Recipients ; Treatment Outcome ; Lung
    Language English
    Publishing date 2022-07-28
    Publishing country France
    Document type Journal Article
    ISSN 2590-0412
    ISSN (online) 2590-0412
    DOI 10.1016/j.resmer.2022.100941
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Center variability in the prognostic value of a cumulative acute cellular rejection "A-score" for long-term lung transplant outcomes.

    Belousova, Natalia / Huszti, Ella / Li, Qixuan / Vasileva, Anastasiia / Ghany, Rasheed / Gabarin, Ramy / El Sanharawi, Moustapha / Picard, Clement / Hwang, David / Levy, Liran / Keshavjee, Shaf / Chow, Chung-Wai / Roux, Antoine / Martinu, Tereza

    American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons

    2023  Volume 24, Issue 1, Page(s) 89–103

    Abstract: The acute rejection score (A-score) in lung transplant recipients, calculated as the average of acute cellular rejection A-grades across transbronchial biopsies, summarizes the cumulative burden of rejection over time. We assessed the association between ...

    Abstract The acute rejection score (A-score) in lung transplant recipients, calculated as the average of acute cellular rejection A-grades across transbronchial biopsies, summarizes the cumulative burden of rejection over time. We assessed the association between A-score and transplant outcomes in 2 geographically distinct cohorts. The primary cohort included 772 double lung transplant recipients. The analysis was repeated in 300 patients from an independent comparison cohort. Time-dependent multivariable Cox models were constructed to evaluate the association between A-score and chronic lung allograft dysfunction or graft failure. Landmark analyses were performed with A-score calculated at 6 and 12 months posttransplant. In the primary cohort, no association was found between A-score and graft outcome. However, in the comparison cohort, time-dependent A-score was associated with chronic lung allograft dysfunction both as a time-dependent variable (hazard ratio, 1.51; P < .01) and when calculated at 6 months posttransplant (hazard ratio, 1.355; P = .031). The A-score can be a useful predictor of lung transplant outcomes in some settings but is not generalizable across all centers; its utility as a prognostication tool is therefore limited.
    MeSH term(s) Humans ; Prognosis ; Retrospective Studies ; Lung Transplantation/adverse effects ; Lung ; Proportional Hazards Models ; Graft Rejection/diagnosis ; Graft Rejection/etiology
    Language English
    Publishing date 2023-08-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2060594-8
    ISSN 1600-6143 ; 1600-6135
    ISSN (online) 1600-6143
    ISSN 1600-6135
    DOI 10.1016/j.ajt.2023.08.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Results of Lung Transplantation for Cystic Fibrosis With Selected Donors Over 65 Years Old.

    Glorion, Matthieu / Sarsam, Matthieu / Roux, Antoine / Stern, Marc / Belousova, Natalia / Fessler, Julien / Pricopi, Ciprian / De Wolf, Julien / Picard, Clement / Brugière, Olivier / De Miranda, Sandra / Grenet, Dominique / Tachon, Guillaume / Cerf, Charles / Parquin, Francois / Le Guen, Morgan / Chapelier, Alain / Vallée, Alexandre / Sage, Edouard

    Transplant international : official journal of the European Society for Organ Transplantation

    2023  Volume 36, Page(s) 11180

    Abstract: Lung transplantation is limited by the shortage of suitable donors. Many programs have begun to use extended criteria donors. Donors over 65 years old are rarely reported, especially for young cystic fibrosis recipients. This monocentric study was ... ...

    Abstract Lung transplantation is limited by the shortage of suitable donors. Many programs have begun to use extended criteria donors. Donors over 65 years old are rarely reported, especially for young cystic fibrosis recipients. This monocentric study was conducted for cystic fibrosis recipients from January 2005 to December 2019, comparing two cohorts according to lung donor age (<65 years or ≥65 years). The primary objective was to assess the survival rate at 3 years using a Cox multivariable model. Of the 356 lung recipients, 326 had donors under 65 years, and 30 had donors over 65 years. Donors' characteristics did not differ significantly in terms of sex, time on mechanical ventilation before retrieval, and partial pressure of arterial oxygen/fraction of inspired oxygen ratio. There were no significant differences in post-operative mechanical ventilation duration and incidence of grade 3 primary graft dysfunction between the two groups. At 1, 3, and 5 years, the percentage of predicted forced expiratory volume in 1 s (
    MeSH term(s) Humans ; Aged ; Cystic Fibrosis/surgery ; Tissue and Organ Procurement ; Retrospective Studies ; Treatment Outcome ; Tissue Donors ; Lung Transplantation/methods ; Lung ; Oxygen
    Chemical Substances Oxygen (S88TT14065)
    Language English
    Publishing date 2023-06-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 639435-8
    ISSN 1432-2277 ; 0934-0874
    ISSN (online) 1432-2277
    ISSN 0934-0874
    DOI 10.3389/ti.2023.11180
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Conversion to belatacept after lung transplantation: Report of 10 cases.

    Brugière, Olivier / Vallée, Alexandre / Raimbourg, Quentin / Peraldi, Marie-Noelle / de Verdière, Sylvie Colin / Beaumont, Laurence / Hamid, Abdulmonem / Zrounba, Mathilde / Roux, Antoine / Picard, Clément / Parquin, François / Glorion, Matthieu / Oniszczuk, Julie / Hertig, Alexandre / Mal, Hervé / Bunel, Vincent

    PloS one

    2023  Volume 18, Issue 3, Page(s) e0281492

    Abstract: Background: Calcineurin inhibitors (CNIs) remain the cornerstone of maintenance immunosuppression (IS) after lung transplantation (LTx), although CNI-related life-threatening toxic effects may occur. Belatacept, a novel immunosuppressant that blocks a T- ...

    Abstract Background: Calcineurin inhibitors (CNIs) remain the cornerstone of maintenance immunosuppression (IS) after lung transplantation (LTx), although CNI-related life-threatening toxic effects may occur. Belatacept, a novel immunosuppressant that blocks a T-cell co-stimulation pathway, is a non-nephrotoxic drug indicated as an alternative to CNIs in kidney Tx. In LTx, there are only a few reports of belatacept conversion as a CNI-free or CNI-sparing IS treatment.
    Methods: We reviewed a series of 10 LTx recipients with conversion to a CNI-free belatacept IS regimen within the first year post-LTx (n = 7) or a belatacept/low-dose CNI combination after the first year (n = 3).
    Results: Use of belatacept was triggered by severe renal failure in 9 patients and under-IS with previous other IS-related toxicities in 1 patient. Mean estimated glomerular filtration rate after starting belatacept significantly improved at 6 months after initiation and at the last-follow-up (p = 0.006, and p = 0.002 respectively). The incidence of recurrent and/or severe acute cellular rejection (ACR) episodes was high in patients with CNI-free belatacept-based IS (n = 4/7). Chronic graft allograft dysfunction developed in 2 of 9 recipients under belatacept IS. Belatacept was stopped in 6 patients because of recurrent/severe ACR (n = 3), recurrent opportunistic infections (n = 1), center modified policy (n = 1), or other cause (n = 1).
    Conclusion: Early conversion to CNI-free belatacept-based IS improved renal function in this series but was counterbalanced by a high incidence of recurrent ACR, including life-threatening episodes. Other studies are needed to better determine the indications for its use after LTx, possibly with lower immunological risk IS regimens, such as CNI-sparing belatacept.
    MeSH term(s) Humans ; Abatacept/therapeutic use ; Abatacept/pharmacology ; Calcineurin Inhibitors/adverse effects ; Graft Rejection/drug therapy ; Graft Rejection/prevention & control ; Graft Survival ; Immunosuppressive Agents/adverse effects ; Kidney Transplantation/adverse effects ; Lung Transplantation/adverse effects
    Chemical Substances Abatacept (7D0YB67S97) ; Calcineurin Inhibitors ; Immunosuppressive Agents
    Language English
    Publishing date 2023-03-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0281492
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: First use of imlifidase desensitization in a highly sensitized lung transplant candidate: a case report.

    Roux, Antoine / Bunel, Vincent / Belousova, Natalia / Messika, Jonathan / Tanaka, Sebastien / Salpin, Mathilde / Roussel, Arnaud / Beaumont-Azuar, Laurence / Picard, Clement / Brugiere, Olivier / Devaquet, Jerome / Sage, Edouard / Le Guen, Morgan / Taupin, Jean-Luc / Devriese, Magali / Glorion, Mathieu / Parquin, Francois

    American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons

    2023  Volume 23, Issue 2, Page(s) 294–297

    Abstract: Lung transplant candidates who are highly sensitized against human leucocyte antigen present an ongoing challenge with regards to finding immunologically acceptable donors. Desensitization strategies aimed at reducing preformed donor-specific antibodies ... ...

    Abstract Lung transplant candidates who are highly sensitized against human leucocyte antigen present an ongoing challenge with regards to finding immunologically acceptable donors. Desensitization strategies aimed at reducing preformed donor-specific antibodies have a number of limitations. Imlifidase, an IgG-degrading enzyme derived from Streptococcus pyogenes, is a novel agent that has been used to convert positive crossmatches to negative in kidney transplant candidates, allowing transplantation to occur. We present the first case of imlifidase use for antibody depletion in a highly sensitized lung transplant candidate who went on to undergo a successful bilateral lung transplant.
    MeSH term(s) Humans ; Antibodies ; Immunosuppressive Agents ; Kidney Transplantation/adverse effects ; Tissue Donors ; HLA Antigens ; Lung Transplantation/adverse effects ; Histocompatibility Testing ; Desensitization, Immunologic ; Graft Rejection/drug therapy ; Graft Rejection/etiology
    Chemical Substances Antibodies ; Immunosuppressive Agents ; HLA Antigens
    Language English
    Publishing date 2023-01-12
    Publishing country United States
    Document type Case Reports
    ZDB-ID 2060594-8
    ISSN 1600-6143 ; 1600-6135
    ISSN (online) 1600-6143
    ISSN 1600-6135
    DOI 10.1016/j.ajt.2022.11.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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