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Perriguey M, Succar ME, Clément A, Lagarde S, Ribes O, Dode X, Rheims S, Bartolomei F. High-purified cannabidiol efficacy and safety in a cohort of adult patients with various types of drug-resistant epilepsies. Rev Neurol (Paris) 2024; 180:147-153. [PMID: 37806886 DOI: 10.1016/j.neurol.2023.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 04/25/2023] [Accepted: 07/03/2023] [Indexed: 10/10/2023]
Abstract
About 30% of patients with epilepsy are drug resistant. Lennox-Gastaut syndrome (LGS), Dravet syndrome (DS) and tuberous sclerosis complex (TSC) are diseases for which high-purified-cannabidiol (CBD) known as Epidiolex® (GW pharma) can be prescribed in add-on of other medications in case of drug-resistance. Currently, there are only a few recent data in the literature about the efficacy and safety of CBD in other forms of refractory epilepsies especially focal epilepsies in adults. We report retrospectively the experience of high-purified-CBD use in two French reference medical centers for epilepsy in various forms of drug-resistant epilepsy. We distinguished two groups of patients: group A with epileptic encephalopathies and group B with focal or multifocal epilepsy. Safety and efficacy (% of responder patients) were evaluated. Finally, 73 patients (51 in group A and 22 in group B) used high-purified CBD as an add-on treatment for their drug-resistant epilepsy. Patients in group A were significantly younger (P=0.0155), with a longer exposition of treatment (P=0.0497) than group B and with higher doses (P=0.0300). Respectively, 15 patients (29.4%) and five patients (22.7%) were responders during the follow-up period (P=0.552). The association with clobazam was more frequent in responders than in non-responder patients (16 patients [80%] versus four [20%]). The most frequent side effect was somnolence. At the end of follow-up, 15 patients in group A (29.4%) and nine patients in group B (40.1%) had stopped the high-purified-CBD treatment due to aggravation of seizure, absence of positive effects, or adverse events. This study showed no significant difference regarding the type of drug-resistant epilepsy and suggests that this treatment may be of interest for all types of drug-resistant epilepsy.
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Affiliation(s)
- M Perriguey
- Aix-Marseille University, Marseille, France; Epilepsy and Clinical Neurophysiology Department, Timone Hospital, Assistance publique-Hôpitaux de Marseille, Marseille, France
| | - M El Succar
- Department of pharmacy, hospices civils de Lyon, Lyon, France
| | - A Clément
- Aix Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France; Epilepsy and Clinical Neurophysiology Department, Timone Hospital, Assistance publique-Hôpitaux de Marseille, Marseille, France
| | - S Lagarde
- Aix-Marseille University, Marseille, France; Aix Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France; Epilepsy and Clinical Neurophysiology Department, Timone Hospital, Assistance publique-Hôpitaux de Marseille, Marseille, France
| | - O Ribes
- Department of pharmacy, hospices civils de Lyon, Lyon, France
| | - X Dode
- Department of pharmacy, hospices civils de Lyon, Lyon, France
| | - S Rheims
- Department of Functional Neurology and Epileptology, hospices civils de Lyon and Lyon 1 University, Lyon, France; Lyon Neurosciences Research Center, CRNL Inserm U1028, CNRS UMR5292 and Lyon 1 University, Lyon, France
| | - F Bartolomei
- Aix-Marseille University, Marseille, France; Aix Marseille Univ, INSERM, INS, Inst Neurosci Syst, Marseille, France; Epilepsy and Clinical Neurophysiology Department, Timone Hospital, Assistance publique-Hôpitaux de Marseille, Marseille, France.
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Sevin C, Hatteb S, Clément A, Bignami F, Chillotti L, Bugnard F, Bénard S, Boespflug-Tanguy O. Childhood cerebral adrenoleukodystrophy (CCALD) in France: epidemiology, natural history, and burden of disease - A population-based study. Orphanet J Rare Dis 2023; 18:238. [PMID: 37563635 PMCID: PMC10416383 DOI: 10.1186/s13023-023-02843-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 07/23/2023] [Indexed: 08/12/2023] Open
Abstract
BACKGROUND X-linked adrenoleukodystrophy (ALD) is a rare metabolic and neurodegenerative disorder belonging to the group of leukodystrophies, with an estimated incidence around 1:25 000 newborns worldwide, mostly among men. Childhood Cerebral ALD (CCALD) is the most severe form with a poor prognosis if not properly treated during the first years of life. Currently, only allogeneic hematopoietic stem cell transplantation (allo-HSCT) is widely available for CCALD treatment. To date, there is a lack of data regarding CCALD epidemiology, natural history, and current management in France. This knowledge is crucial for the development of new therapies such as gene therapies. In this context, the French National Health Data System (SNDS) is a particularly indicated database to collect information meeting these needs. A non-interventional, national, real-life, retrospective study was performed using secondary data from the national ALD registry (LEUKOFRANCE) and SNDS. CCALD patients detected between 2009 and 2018 and successfully matched between LEUKOFRANCE and SNDS were included in this study. Index date was defined as the first CCALD event detected during study period. Subgroups of patients with sufficient follow-up (6 months) and history (1 year) available around index date were analyzed to assess CCALD burden and natural history. RESULTS 52 patients were included into the matched cohort. Median annual incidence of CCALD was estimated at 4 patients. Median age at CCALD diagnosis was 7.0 years. Among patients without allo-HSCT, five-year overall survival was 66.6%, with 93.3% of them presenting at least one CCALD symptom and 62.1% presenting a least one major functional disability (MFD). Among patients with allo-HSCT, five-year overall survival was 94.4%, with only 11.1% of patients presenting CCALD symptoms, and 16.7% of presenting a MFD. Mean annualized costs were almost twice as important among patients without allo-HSCT, with 49,211€, 23,117€, respectively. Costs were almost exclusively represented by hospitalizations. CONCLUSIONS To the best of our knowledge, this is the most up to date study analyzing CCALD epidemiology, clinical and economic burden in France. The necessity of a precocious management with HSCT highlight the potential benefits of including an expanded screening program among newborns, coupled with family screenings when a mutation is detected.
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Affiliation(s)
- Caroline Sevin
- Center of Reference for Leukodystrophies, Bicêtre Hospital - APHP, Le Kremlin Bicêtre, France
| | - Samira Hatteb
- Center of Reference for Leukodystrophies, Bicêtre Hospital - APHP, Le Kremlin Bicêtre, France
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Cottin V, Guéguen S, Nunes H, Jouneau S, Crestani B, Bonniaud P, Wemeau L, Israël-Biet D, Reynaud-Gaubert M, Gondouin A, Cadranel J, Marchand-Adam S, Bramki M, Dufaure-Garé I, Amselem S, Clément A, RaDiCo team. Exemples de partenariats réussis d'une cohorte de maladie rare. Rev Epidemiol Sante Publique 2022. [DOI: 10.1016/j.respe.2022.09.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Morrow N, Locatelli C, Trzaskalski N, Klein C, Hanson A, Tripathi I, Clément A, Lorenzen-Schmidt I, Mulvihill E. INTESTINAL ADAPTATION TO SHORT-TERM, EXTREME FAT CONSUMPTION ALTERS TRIGLCYERIDE-RICH LIPOPROTEIN SECRETION AND INTESTINAL LIPID HANDLING IN MALE AND FEMALE MICE. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Cottin V, Bonniaud P, Cadranel J, Crestani B, Jouneau S, Marchand-Adam S, Nunes H, Wémeau-Stervinou L, Bergot E, Blanchard E, Borie R, Bourdin A, Chenivesse C, Clément A, Gomez E, Gondouin A, Hirschi S, Lebargy F, Marquette CH, Montani D, Prévot G, Quetant S, Reynaud-Gaubert M, Salaun M, Sanchez O, Trumbic B, Berkani K, Brillet PY, Campana M, Chalabreysse L, Chatté G, Debieuvre D, Ferretti G, Fourrier JM, Just N, Kambouchner M, Legrand B, Le Guillou F, Lhuillier JP, Mehdaoui A, Naccache JM, Paganon C, Rémy-Jardin M, Si-Mohamed S, Terrioux P. [French practical guidelines for the diagnosis and management of IPF - 2021 update, full version]. Rev Mal Respir 2022; 39:e35-e106. [PMID: 35752506 DOI: 10.1016/j.rmr.2022.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Since the previous French guidelines were published in 2017, substantial additional knowledge about idiopathic pulmonary fibrosis has accumulated. METHODS Under the auspices of the French-speaking Learned Society of Pulmonology and at the initiative of the coordinating reference center, practical guidelines for treatment of rare pulmonary diseases have been established. They were elaborated by groups of writers, reviewers and coordinators with the help of the OrphaLung network, as well as pulmonologists with varying practice modalities, radiologists, pathologists, a general practitioner, a head nurse, and a patients' association. The method was developed according to rules entitled "Good clinical practice" in the overall framework of the "Guidelines for clinical practice" of the official French health authority (HAS), taking into account the results of an online vote using a Likert scale. RESULTS After analysis of the literature, 54 recommendations were formulated, improved, and validated by the working groups. The recommendations covered a wide-ranging aspects of the disease and its treatment: epidemiology, diagnostic modalities, quality criteria and interpretation of chest CT, indication and modalities of lung biopsy, etiologic workup, approach to familial disease entailing indications and modalities of genetic testing, evaluation of possible functional impairments and prognosis, indications for and use of antifibrotic therapy, lung transplantation, symptom management, comorbidities and complications, treatment of chronic respiratory failure, diagnosis and management of acute exacerbations of fibrosis. CONCLUSION These evidence-based guidelines are aimed at guiding the diagnosis and the management in clinical practice of idiopathic pulmonary fibrosis.
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Affiliation(s)
- V Cottin
- Centre national coordonnateur de référence des maladies pulmonaires rares, service de pneumologie, hôpital Louis-Pradel, Hospices Civils de Lyon (HCL), Lyon, France; UMR 754, IVPC, INRAE, Université de Lyon, Université Claude-Bernard Lyon 1, Lyon, France; Membre d'OrphaLung, RespiFil, Radico-ILD2, et ERN-LUNG, Lyon, France.
| | - P Bonniaud
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie et soins intensifs respiratoires, centre hospitalo-universitaire de Bourgogne et faculté de médecine et pharmacie, université de Bourgogne-Franche Comté, Dijon ; Inserm U123-1, Dijon, France
| | - J Cadranel
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie et oncologie thoracique, Assistance publique-Hôpitaux de Paris (AP-HP), hôpital Tenon, Paris ; Sorbonne université GRC 04 Theranoscan, Paris, France
| | - B Crestani
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie A, AP-HP, hôpital Bichat, Paris, France
| | - S Jouneau
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, service de pneumologie, hôpital Pontchaillou, Rennes ; IRSET UMR1085, université de Rennes 1, Rennes, France
| | - S Marchand-Adam
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, hôpital Bretonneau, service de pneumologie, CHRU, Tours, France
| | - H Nunes
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie, AP-HP, hôpital Avicenne, Bobigny ; université Sorbonne Paris Nord, Bobigny, France
| | - L Wémeau-Stervinou
- Centre de référence constitutif des maladies pulmonaires rares, Institut Cœur-Poumon, service de pneumologie et immuno-allergologie, CHRU de Lille, Lille, France
| | - E Bergot
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, service de pneumologie et oncologie thoracique, hôpital Côte de Nacre, CHU de Caen, Caen, France
| | - E Blanchard
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, service de pneumologie, hôpital Haut Levêque, CHU de Bordeaux, Pessac, France
| | - R Borie
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie A, AP-HP, hôpital Bichat, Paris, France
| | - A Bourdin
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, département de pneumologie et addictologie, hôpital Arnaud-de-Villeneuve, CHU de Montpellier, Montpellier ; Inserm U1046, CNRS UMR 921, Montpellier, France
| | - C Chenivesse
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie et d'immuno-allergologie, hôpital Albert Calmette ; CHRU de Lille, Lille ; centre d'infection et d'immunité de Lille U1019 - UMR 9017, Université de Lille, CHU Lille, CNRS, Inserm, Institut Pasteur de Lille, Lille, France
| | - A Clément
- Centre de ressources et de compétence de la mucoviscidose pédiatrique, centre de référence des maladies respiratoires rares (RespiRare), service de pneumologie pédiatrique, hôpital d'enfants Armand-Trousseau, CHU Paris Est, Paris ; Sorbonne université, Paris, France
| | - E Gomez
- Centre de compétence pour les maladies pulmonaires rares, département de pneumologie, hôpitaux de Brabois, CHRU de Nancy, Vandoeuvre-les Nancy, France
| | - A Gondouin
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, CHU Jean-Minjoz, Besançon, France
| | - S Hirschi
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, Nouvel Hôpital civil, Strasbourg, France
| | - F Lebargy
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, CHU Maison Blanche, Reims, France
| | - C-H Marquette
- Centre de compétence pour les maladies pulmonaires rares, FHU OncoAge, département de pneumologie et oncologie thoracique, hôpital Pasteur, CHU de Nice, Nice cedex 1 ; Université Côte d'Azur, CNRS, Inserm, Institute of Research on Cancer and Aging (IRCAN), Nice, France
| | - D Montani
- Centre de compétence pour les maladies pulmonaires rares, centre national coordonnateur de référence de l'hypertension pulmonaire, service de pneumologie et soins intensifs pneumologiques, AP-HP, DMU 5 Thorinno, Inserm UMR S999, CHU Paris-Sud, hôpital de Bicêtre, Le Kremlin-Bicêtre ; Université Paris-Saclay, Faculté de médecine, Le Kremlin-Bicêtre, France
| | - G Prévot
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, CHU Larrey, Toulouse, France
| | - S Quetant
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie et physiologie, CHU Grenoble Alpes, Grenoble, France
| | - M Reynaud-Gaubert
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, AP-HM, CHU Nord, Marseille ; Aix Marseille Université, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - M Salaun
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, oncologie thoracique et soins intensifs respiratoires & CIC 1404, hôpital Charles Nicole, CHU de Rouen, Rouen ; IRIB, laboratoire QuantiIF-LITIS, EA 4108, université de Rouen, Rouen, France
| | - O Sanchez
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie et soins intensifs, hôpital européen Georges-Pompidou, AP-HP, Paris, France
| | | | - K Berkani
- Clinique Pierre de Soleil, Vetraz Monthoux, France
| | - P-Y Brillet
- Université Paris 13, UPRES EA 2363, Bobigny ; service de radiologie, AP-HP, hôpital Avicenne, Bobigny, France
| | - M Campana
- Service de pneumologie et oncologie thoracique, CHR Orléans, Orléans, France
| | - L Chalabreysse
- Service d'anatomie-pathologique, groupement hospitalier est, HCL, Bron, France
| | - G Chatté
- Cabinet de pneumologie et infirmerie protestante, Caluire, France
| | - D Debieuvre
- Service de pneumologie, GHRMSA, hôpital Emile-Muller, Mulhouse, France
| | - G Ferretti
- Université Grenoble Alpes, Grenoble ; service de radiologie diagnostique et interventionnelle, CHU Grenoble Alpes, Grenoble, France
| | - J-M Fourrier
- Association Pierre-Enjalran Fibrose Pulmonaire Idiopathique (APEFPI), Meyzieu, France
| | - N Just
- Service de pneumologie, CH Victor-Provo, Roubaix, France
| | - M Kambouchner
- Service de pathologie, AP-HP, hôpital Avicenne, Bobigny, France
| | - B Legrand
- Cabinet médical de la Bourgogne, Tourcoing ; Université de Lille, CHU Lille, ULR 2694 METRICS, CERIM, Lille, France
| | - F Le Guillou
- Cabinet de pneumologie, pôle santé de l'Esquirol, Le Pradet, France
| | - J-P Lhuillier
- Cabinet de pneumologie, La Varenne Saint-Hilaire, France
| | - A Mehdaoui
- Service de pneumologie et oncologie thoracique, CH Eure-Seine, Évreux, France
| | - J-M Naccache
- Service de pneumologie, allergologie et oncologie thoracique, GH Paris Saint-Joseph, Paris, France
| | - C Paganon
- Centre national coordonnateur de référence des maladies pulmonaires rares, service de pneumologie, hôpital Louis-Pradel, Hospices Civils de Lyon (HCL), Lyon, France
| | - M Rémy-Jardin
- Institut Cœur-Poumon, service de radiologie et d'imagerie thoracique, CHRU de Lille, Lille, France
| | - S Si-Mohamed
- Département d'imagerie cardiovasculaire et thoracique, hôpital Louis-Pradel, HCL, Bron ; Université de Lyon, INSA-Lyon, Université Claude-Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1206, Villeurbanne, France
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6
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Cottin V, Bonniaud P, Cadranel J, Crestani B, Jouneau S, Marchand-Adam S, Nunes H, Wémeau-Stervinou L, Bergot E, Blanchard E, Borie R, Bourdin A, Chenivesse C, Clément A, Gomez E, Gondouin A, Hirschi S, Lebargy F, Marquette CH, Montani D, Prévot G, Quetant S, Reynaud-Gaubert M, Salaun M, Sanchez O, Trumbic B, Berkani K, Brillet PY, Campana M, Chalabreysse L, Chatté G, Debieuvre D, Ferretti G, Fourrier JM, Just N, Kambouchner M, Legrand B, Le Guillou F, Lhuillier JP, Mehdaoui A, Naccache JM, Paganon C, Rémy-Jardin M, Si-Mohamed S, Terrioux P. [French practical guidelines for the diagnosis and management of IPF - 2021 update, short version]. Rev Mal Respir 2022; 39:275-312. [PMID: 35304014 DOI: 10.1016/j.rmr.2022.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Since the previous French guidelines were published in 2017, substantial additional knowledge about idiopathic pulmonary fibrosis has accumulated. METHODS Under the auspices of the French-speaking Learned Society of Pulmonology and at the initiative of the coordinating reference center, practical guidelines for treatment of rare pulmonary diseases have been established. They were elaborated by groups of writers, reviewers and coordinators with the help of the OrphaLung network, as well as pulmonologists with varying practice modalities, radiologists, pathologists, a general practitioner, a head nurse, and a patients' association. The method was developed according to rules entitled "Good clinical practice" in the overall framework of the "Guidelines for clinical practice" of the official French health authority (HAS), taking into account the results of an online vote using a Likert scale. RESULTS After analysis of the literature, 54 recommendations were formulated, improved, and validated by the working groups. The recommendations covered a wide-ranging aspects of the disease and its treatment: epidemiology, diagnostic modalities, quality criteria and interpretation of chest CT, indication and modalities of lung biopsy, etiologic workup, approach to familial disease entailing indications and modalities of genetic testing, evaluation of possible functional impairments and prognosis, indications for and use of antifibrotic therapy, lung transplantation, symptom management, comorbidities and complications, treatment of chronic respiratory failure, diagnosis and management of acute exacerbations of fibrosis. CONCLUSION These evidence-based guidelines are aimed at guiding the diagnosis and the management in clinical practice of idiopathic pulmonary fibrosis.
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Affiliation(s)
- V Cottin
- Centre national coordonnateur de référence des maladies pulmonaires rares, service de pneumologie, hôpital Louis-Pradel, Hospices Civils de Lyon (HCL), Lyon, France; UMR 754, IVPC, INRAE, Université de Lyon, Université Claude-Bernard Lyon 1, Lyon, France; Membre d'OrphaLung, RespiFil, Radico-ILD2, et ERN-LUNG, Lyon, France.
| | - P Bonniaud
- Service de pneumologie et soins intensifs respiratoires, centre de référence constitutif des maladies pulmonaires rares, centre hospitalo-universitaire de Bourgogne et faculté de médecine et pharmacie, université de Bourgogne-Franche Comté, Dijon ; Inserm U123-1, Dijon, France
| | - J Cadranel
- Service de pneumologie et oncologie thoracique, centre de référence constitutif des maladies pulmonaires rares, assistance publique-hôpitaux de Paris (AP-HP), hôpital Tenon, Paris ; Sorbonne université GRC 04 Theranoscan, Paris, France
| | - B Crestani
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie A, AP-HP, hôpital Bichat, Paris, France
| | - S Jouneau
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, service de pneumologie, hôpital Pontchaillou, Rennes ; IRSET UMR1085, université de Rennes 1, Rennes, France
| | - S Marchand-Adam
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, hôpital Bretonneau, service de pneumologie, CHRU, Tours, France
| | - H Nunes
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie, AP-HP, hôpital Avicenne, Bobigny ; université Sorbonne Paris Nord, Bobigny, France
| | - L Wémeau-Stervinou
- Centre de référence constitutif des maladies pulmonaires rares, Institut Cœur-Poumon, service de pneumologie et immuno-allergologie, CHRU de Lille, Lille, France
| | - E Bergot
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, service de pneumologie et oncologie thoracique, hôpital Côte de Nacre, CHU de Caen, Caen, France
| | - E Blanchard
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, service de pneumologie, hôpital Haut Levêque, CHU de Bordeaux, Pessac, France
| | - R Borie
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie A, AP-HP, hôpital Bichat, Paris, France
| | - A Bourdin
- Centre de compétence pour les maladies pulmonaires rares de l'adulte, département de pneumologie et addictologie, hôpital Arnaud-de-Villeneuve, CHU de Montpellier, Montpellier ; Inserm U1046, CNRS UMR 921, Montpellier, France
| | - C Chenivesse
- Centre de référence constitutif des maladies pulmonaires rares, service de pneumologie et d'immuno-allergologie, hôpital Albert Calmette ; CHRU de Lille, Lille ; centre d'infection et d'immunité de Lille U1019 - UMR 9017, Université de Lille, CHU Lille, CNRS, Inserm, Institut Pasteur de Lille, Lille, France
| | - A Clément
- Centre de ressources et de compétences de la mucoviscidose pédiatrique, centre de référence des maladies respiratoires rares (RespiRare), service de pneumologie pédiatrique, hôpital d'enfants Armand-Trousseau, CHU Paris Est, Paris ; Sorbonne université, Paris, France
| | - E Gomez
- Centre de compétence pour les maladies pulmonaires rares, département de pneumologie, hôpitaux de Brabois, CHRU de Nancy, Vandoeuvre-les Nancy, France
| | - A Gondouin
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, CHU Jean Minjoz, Besançon, France
| | - S Hirschi
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, Nouvel Hôpital civil, Strasbourg, France
| | - F Lebargy
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, CHU Maison Blanche, Reims, France
| | - C-H Marquette
- Centre de compétence pour les maladies pulmonaires rares, FHU OncoAge, département de pneumologie et oncologie thoracique, hôpital Pasteur, CHU de Nice, Nice cedex 1 ; Université Côte d'Azur, CNRS, Inserm, Institute of Research on Cancer and Aging (IRCAN), Nice, France
| | - D Montani
- Centre de compétence pour les maladies pulmonaires rares, centre national coordonnateur de référence de l'hypertension pulmonaire, unité pneumologie et soins intensifs pneumologiques, AP-HP, DMU 5 Thorinno, Inserm UMR S999, CHU Paris-Sud, hôpital de Bicêtre, Le Kremlin-Bicêtre ; Université Paris-Saclay, Faculté de médecine, Le Kremlin-Bicêtre, France
| | - G Prévot
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, CHU Larrey, Toulouse, France
| | - S Quetant
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie et physiologie, CHU Grenoble Alpes, Grenoble, France
| | - M Reynaud-Gaubert
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, AP-HM, CHU Nord, Marseille ; Aix Marseille Université, IRD, APHM, MEPHI, IHU-Méditerranée Infection, Marseille, France
| | - M Salaun
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie, oncologie thoracique et soins intensifs respiratoires & CIC 1404, hôpital Charles Nicole, CHU de Rouen, Rouen ; IRIB, laboratoire QuantiIF-LITIS, EA 4108, université de Rouen, Rouen, France
| | - O Sanchez
- Centre de compétence pour les maladies pulmonaires rares, service de pneumologie et soins intensifs, hôpital européen Georges Pompidou, AP-HP, Paris, France
| | | | - K Berkani
- Clinique Pierre de Soleil, Vetraz Monthoux, France
| | - P-Y Brillet
- Université Paris 13, UPRES EA 2363, Bobigny ; service de radiologie, AP-HP, hôpital Avicenne, Bobigny, France
| | - M Campana
- Service de pneumologie et oncologie thoracique, CHR Orléans, Orléans, France
| | - L Chalabreysse
- Service d'anatomie-pathologique, groupement hospitalier est, HCL, Bron, France
| | - G Chatté
- Cabinet de pneumologie et infirmerie protestante, Caluire, France
| | - D Debieuvre
- Service de Pneumologie, GHRMSA, hôpital Emile Muller, Mulhouse, France
| | - G Ferretti
- Université Grenoble Alpes, Grenoble ; service de radiologie diagnostique et interventionnelle, CHU Grenoble Alpes, Grenoble, France
| | - J-M Fourrier
- Association Pierre Enjalran Fibrose Pulmonaire Idiopathique (APEFPI), Meyzieu, France
| | - N Just
- Service de pneumologie, CH Victor Provo, Roubaix, France
| | - M Kambouchner
- Service de pathologie, AP-HP, hôpital Avicenne, Bobigny, France
| | - B Legrand
- Cabinet médical de la Bourgogne, Tourcoing ; Université de Lille, CHU Lille, ULR 2694 METRICS, CERIM, Lille, France
| | - F Le Guillou
- Cabinet de pneumologie, pôle santé de l'Esquirol, Le Pradet, France
| | - J-P Lhuillier
- Cabinet de pneumologie, La Varenne Saint-Hilaire, France
| | - A Mehdaoui
- Service de pneumologie et oncologie thoracique, CH Eure-Seine, Évreux, France
| | - J-M Naccache
- Service de pneumologie, allergologie et oncologie thoracique, GH Paris Saint-Joseph, Paris, France
| | - C Paganon
- Centre national coordonnateur de référence des maladies pulmonaires rares, service de pneumologie, hôpital Louis-Pradel, Hospices Civils de Lyon (HCL), Lyon, France
| | - M Rémy-Jardin
- Institut Cœur-Poumon, service de radiologie et d'imagerie thoracique, CHRU de Lille, Lille, France
| | - S Si-Mohamed
- Département d'imagerie cardiovasculaire et thoracique, hôpital Louis Pradel, HCL, Bron ; Université de Lyon, INSA-Lyon, Université Claude Bernard Lyon 1, UJM-Saint Etienne, CNRS, Inserm, CREATIS UMR 5220, U1206, Villeurbanne, France
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Noguera C, Fritz B, Clément A, Lemarchand D. Modelling the precipitation of nanoparticles in a closed medium in the presence of seeds: Application to amorphous silica synthesis. J Colloid Interface Sci 2021; 601:843-852. [PMID: 34118775 DOI: 10.1016/j.jcis.2021.03.176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/11/2021] [Accepted: 03/31/2021] [Indexed: 10/21/2022]
Abstract
Seed-mediated methods are widely used in industrial or academic laboratories for the synthesis of nanoparticles of controlled shape and size. In the natural medium, precipitation of secondary minerals also often take place on seeds. In this context, we have devised a formalism which accounts for the competition between seed growth and nucleation and growth of secondary particles in an initially over-saturated aqueous solution. Based on the classical nucleation theory, it involves a size-dependent growth law which accounts for Ostwald ripening effects, unlike most water-rock interaction codes. We find that, in such closed system, seed growth and nucleation/growth of secondary particles are strongly coupled. In the multi-dimensional parameter space, regions where one or the other process prevails are well-separated by a rather abrupt transition. In general, the value of the initial seed total surface area is insufficient to fully orientate the synthesis. Relying on this approach, we propose an alternative interpretation of recent experimental results on amorphous silica nanoparticle synthesis. Besides fundamental understanding of the kinetics of precipitation, the interest of the present approach is to serve as a guideline to experimentalists or industrialists working in seed-mediated syntheses and warn on the undesired formation of secondary particles when monodispersed distributions of nano- or micro-particles are searched.
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Affiliation(s)
- C Noguera
- CNRS-Sorbonne Université, UMR 7588, INSP, 4 Place Jussieu, F-75005 Paris, France.
| | - B Fritz
- Université de Strasbourg/EOST, CNRS, Institut Terre et Environnement Strasbourg, 5 rue René Descartes, Strasbourg Cedex F-67084, France
| | - A Clément
- Université de Strasbourg/EOST, CNRS, Institut Terre et Environnement Strasbourg, 5 rue René Descartes, Strasbourg Cedex F-67084, France
| | - D Lemarchand
- Université de Strasbourg/EOST, CNRS, Institut Terre et Environnement Strasbourg, 5 rue René Descartes, Strasbourg Cedex F-67084, France
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Cottin V, Guéguen S, Jouneau S, Nunes H, Crestani B, Bonniaud P, Wemeau L, Israël-Biet D, Chevereau M, Dufaure-Garé I, Amselem S, Clément A. Fibrose pulmonaire idiopathique au sein de la cohorte RaDiCo-PID. Rev Epidemiol Sante Publique 2020. [DOI: 10.1016/j.respe.2020.04.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Clément A, Chouteau J, Clément P, Ménézo Y. [Importance of the determination of MTHFR SNPs (Methylene Tetrahydrofolate Reductase Single Nucleotide Polymorphisms) in couple infertility]. ACTA ACUST UNITED AC 2020; 48:422-427. [PMID: 32145452 DOI: 10.1016/j.gofs.2020.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVE MTHFR SNPs (Methylene Tetrahydrofolate reductase Single Nucleotide polymorphisms) are biochemical modifications decreasing the capacity to form 5 MTHF 5 methyltetrahydrofolate (5MTHF). Their presence reduces the capacity of the One Carbon cycle, and so the regeneration of Homocysteine (Hcy) and in fine strongly perturbs all the methylation processes. As methylation processes are major regulators in gametogenesis and embryogenesis. We have determined the prevalence of the 2 most important SNPs A1298C and C677T in our population of patients consulting for infertility. METHODS Determination of the MTHFR SNPs A1298C and C677T, by hybridization using the LAMP Human MTHFR mutation KITs. RESULTS Only 15.8% of our patients (861) do not carry any SNP (WT wid type). Close to 20% of the patients are homozygotes for one mutation or the other. A total of 19.7% are composite heterozygous. A total of 43% of our population is considered "at risk", based on observations collected for the repeat miscarriages. CONCLUSIONS Determination of the 2 major MTHFR SNPs is not a "first row" choice, but it must not be neglected and should be carried out in case of repeat ART failures and repeat miscarriages. Some simple therapeutic options can be proposed: they are based on the use of 5MTHF (5MethyleneTetraHydroFolate) the compound downstream the MTHFR.
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Affiliation(s)
- A Clément
- Laboratoire Clément, avenue d'Eylau, 75016 Paris, France.
| | - J Chouteau
- Laboratoire Oriade-Noviale, avenue de la Plaine-Fleurie, 38240 Meylan, France.
| | - P Clément
- Laboratoire Clément, avenue d'Eylau, 75016 Paris, France.
| | - Y Ménézo
- Laboratoire Clément, avenue d'Eylau, 75016 Paris, France; Laboratoire Oriade-Noviale, avenue de la Plaine-Fleurie, 38240 Meylan, France; London Fertility associates, Harley St, London, Royaume-Uni.
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Vital M, Martínez DE, Babay P, Quiroga S, Clément A, Daval D. Control of the mobilization of arsenic and other natural pollutants in groundwater by calcium carbonate concretions in the Pampean Aquifer, southeast of the Buenos Aires province, Argentina. Sci Total Environ 2019; 674:532-543. [PMID: 31022543 DOI: 10.1016/j.scitotenv.2019.04.151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
The water supply for human consumption in the Chaco-Pampean region in Argentina is restricted by the low quality of groundwater due to elevated concentrations of arsenic and other trace elements. Previous studies indicated a complex concurrence of factors and processes that are believed responsible to control the distribution of arsenic in groundwater. For a better understanding of the origin of trace elements in the Pampean aquifer, flow-through experiments with loess and calcrete samples representative of the sediments that constitute the aquifer were carried out in continuous flow reactors. The aqueous solutions were collected and the concentrations of SiO2(aq), Ca2+, SO42-, Na+, Cl-, F- and trace elements (Ba, Sr, V, and As) were measured by inductively coupled plasma atomic emission spectroscopy (ICP-AES), high performance liquid chromatography (HPLC) and capillary electrophoresis. The experiments showed differences in the release rate of elements to the solution according to the type of sediment. The highest concentrations of V, Ba, and As were measured in experiments conducted with loess, and these elements were released quickly to the solution in the first minute of the test. In the case of loess, V and As are suggested to be adsorbed on the solid particles surface. Conversely, the experiments conducted with calcrete showed a lower but continuous release of those elements. This last result may indicate that the trace elements were coprecipitated in the calcite. In addition, it was demonstrated that F did not come from the dissolution of minerals such as fluorapatite, but both desorption from solid surface and dissolution from calcite minerals account for the release of F. This study support that both dissolution and adsorption-desorption processes can control the mobility of trace elements, with an emphasis on the role of calcrete in the retention and the mobilization of trace elements in the Pampean aquifer.
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Affiliation(s)
- M Vital
- Instituto de Geología de Costas y Cuaternario (UNMDP-CIC) - Instituto de Investigaciones Marinas y Costeras (CONICET-UNMDP), Mar del Plata, Argentina.
| | - D E Martínez
- Instituto de Geología de Costas y Cuaternario (UNMDP-CIC) - Instituto de Investigaciones Marinas y Costeras (CONICET-UNMDP), Mar del Plata, Argentina
| | - P Babay
- Comisión Nacional de Energía Atómica, Centro Atómico Constituyentes, Av. Gral. Paz 1499, B1650 Villa Maipú, Pcia de Buenos Aires, Argentina
| | - S Quiroga
- Departamento de Química, Universidad Nacional de Mar del Plata, Argentina
| | - A Clément
- Université de Strasbourg/EOST, CNRS, Laboratoire d'Hydrologie et de Géochimie de Strasbourg, 1 rue Blessig, F-67084 Strasbourg Cedex, France
| | - D Daval
- Université de Strasbourg/EOST, CNRS, Laboratoire d'Hydrologie et de Géochimie de Strasbourg, 1 rue Blessig, F-67084 Strasbourg Cedex, France
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Claret PG, Le Conte P, Oberlin M, Clément A, Pouquet M, Marchal A. Actualités en médecine d’urgence. Ann Fr Med Urgence 2019. [DOI: 10.3166/afmu-2019-0155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Serin D, Adnot S, Allioux C, Alran S, Bazin B, Bendiane MK, Bo-Gallon E, Boinon D, Bouhnik AD, Bourstyn E, Charles C, Clément A, Coussirou J, Cutuli B, Dauchy S, Debourdeau P, Degos L, Duponchel P, Durand T, Eisinger F, Falandry C, Favier B, Heudel P, Ledig C, Lesur A, Mancini J, Monet A, Moretta J, Neveu J, Ninot G, Préau M, Ravot C, Rousset-Jablonski C, Touzani R, Valéro M, Zambrowski JJ. SFSPM 2018 — Congrès de la Société Française de Sénologie et de Pathologie Mammaire (Avignon, 7-9/11-2018). ONCOLOGIE 2018. [DOI: 10.3166/onco-2019-0040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Les 40es Journées de la SFSPM se sont tenues à Avignon du 7 au 9 novembre 2018. Le thème abordé—Cancer du sein : optimisation du parcours de soins — a réuni plus de 1 200 participants sous les voûtes du Palais des Papes. La fluidité de chaque segment du parcours a été analysée en termes de risques de rupture de continuité des soins tant au sein du segment lui-même qu’en amont et en aval. Dans un parcours par essence pluridisciplinaire et plurimétiers, la nécessité d’une réflexion globale et d’une coordination active réalisées par des professionnels formés a été rappelée à chaque session. Chacun des intervenants a esquissé de potentiels indicateurs de qualité tenant compte à la fois de son implication dans son segment d’intervention, mais tenant compte aussi d’une vision plus globale de ce que devrait être le parcours au travers de la maladie et des soins. La parole a été très largement partagée entre soignants et associations de malades, entre paramédicaux et acteurs en sciences humaines et sociales, entre responsables de la santé publique HAS, ARS, CNAM–CPAM 84 et représentants des différents modes d’hospitalisation publique/privée et ESPIC. La session grand public a été l’occasion d’échanges fructueux et instructifs sur la perception des difficultés comme des satisfactions rencontrées que nous ont fait partager les malades, leurs proches et les représentantes des associations. Au total, un congrès de réflexion partagé par de nombreux acteurs qui cherchent tous à améliorer le parcours de soins des malades atteintes de cancer du sein. La publication le 21 janvier par l’INCa de dix indicateurs de qualité du parcours de soins pour les malades atteints de cancer du sein est une étape importante qu’attendaient tous les participants d’Avignon — SFSPM 2018.
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Maunoury F, Clément A, Nwankwo C, Levy-Bachelot L, Abergel A, Di Martino V, Thervet E, Durand-Zaleski I. Cost-effectiveness analysis of elbasvir-grazoprevir regimen for treating hepatitis C virus genotype 1 infection in stage 4-5 chronic kidney disease patients in France. PLoS One 2018; 13:e0194329. [PMID: 29543897 PMCID: PMC5854359 DOI: 10.1371/journal.pone.0194329] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 02/20/2018] [Indexed: 01/20/2023] Open
Abstract
Objective To assess the cost-effectiveness of the elbasvir/grazoprevir (EBR/GZR) regimen in patients with genotype 1 chronic hepatitis C virus (HCV) infection with severe and end-stage renal disease compared to no treatment. Design This study uses a health economic model to estimate the cost-effectiveness of treating previously untreated and treatment experienced chronic hepatitis C patients who have severe and end stage renal disease with the elbasvir-grazoprevir regimen versus no treatment in the French context. The lifetime homogeneous markovian model comprises of forty combined health states including hepatitis C virus and chronic kidney disease. The model parameters were from a multicentre randomized controlled trial, ANRS CO22 HEPATHER French cohort and literature. 1000 Monte Carlo simulations of patient health states for each treatment strategy are used for probabilistic sensitivity analysis and 95% confidence intervals calculations. The results were expressed in cost per quality-adjusted life year (QALY) gained. Patients The mean age of patients in the HEPATHER French cohort was 59.6 years and 56% of them were men. 22.3% of patients had a F0 fibrosis stage (no fibrosis), 24.1% a F1 stage (portal fibrosis without septa), 7.1% a F2 stage (portal fibrosis with few septa), 21.4% a F3 stage (numerous septa without fibrosis) and 25% a F4 fibrosis stage (compensated cirrhosis). Among these HCV genotype 1 patients, 30% had severe renal impairment stage 4, 33% had a severe renal insufficiency stage 5 and 37% had terminal severe renal impairment stage 5 treated by dialysis. Intervention Fixed-dose combination of direct-acting antiviral agents elbasvir and grazoprevir compared to no-treatment. Results EBR/GZR increased the number of life years (6.3 years) compared to no treatment (5.1 years) on a lifetime horizon. The total number of QALYs was higher for the new treatment because of better utility on health conditions (6.2 versus 3.7 QALYs). The incremental cost-utility ratio (ICUR) was of €15,212 per QALY gained for the base case analysis. Conclusions This cost-utility model is an innovative approach that simultaneously looks at the disease evolution of chronic hepatitis C and chronic kidney disease. EBR/GZR without interferon and ribavirin, produced the greatest benefit in terms of life expectancy and quality-adjusted life years (QALY) in treatment-naïve or experienced patients with chronic hepatitis C genotype 1 and stage 4–5 chronic kidney disease including dialysis patients. Based on shape of the acceptability curve, EBR/GZR can be considered cost-effective at a willingness to pay of €20,000 /QALY for patients with renal insufficiency with severe and end-stage renal disease compared to no treatment.
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MESH Headings
- Amides
- Antiviral Agents/economics
- Antiviral Agents/therapeutic use
- Benzofurans/economics
- Benzofurans/therapeutic use
- Carbamates
- Cost-Benefit Analysis/methods
- Cyclopropanes
- Drug Therapy, Combination/economics
- Drug Therapy, Combination/methods
- Female
- France
- Genotype
- Hepacivirus/genetics
- Hepacivirus/isolation & purification
- Hepatitis C, Chronic/complications
- Hepatitis C, Chronic/drug therapy
- Hepatitis C, Chronic/economics
- Hepatitis C, Chronic/virology
- Humans
- Imidazoles/economics
- Imidazoles/therapeutic use
- Kidney Failure, Chronic/complications
- Kidney Failure, Chronic/economics
- Kidney Failure, Chronic/therapy
- Kidney Failure, Chronic/virology
- Liver Cirrhosis/complications
- Liver Cirrhosis/drug therapy
- Liver Cirrhosis/economics
- Liver Cirrhosis/virology
- Male
- Middle Aged
- Models, Economic
- Quality-Adjusted Life Years
- Quinoxalines/economics
- Quinoxalines/therapeutic use
- RNA, Viral/genetics
- RNA, Viral/isolation & purification
- Randomized Controlled Trials as Topic
- Renal Dialysis
- Sulfonamides
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Affiliation(s)
| | | | - Chizoba Nwankwo
- Merck & Co., Inc., Kenilworth, New Jersey, United States of America
| | | | - Armand Abergel
- Hepato-gastro enterology Service, CHU Estaing, Clermont-Ferrand, France
| | - Vincent Di Martino
- Hepatology Department, Franche-Comté University and Besançon University hospital, Besançon, France
| | - Eric Thervet
- HYPPARC Department, Nephrology Service, Paris Descartes University, Paris, France
- Georges Pompidou European Hospital (ET), Paris, France
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14
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Desquiret-Dumas V, Clément A, Seegers V, Boucret L, Ferré-L'Hotellier V, Bouet PE, Descamps P, Procaccio V, Reynier P, May-Panloup P. The mitochondrial DNA content of cumulus granulosa cells is linked to embryo quality. Hum Reprod 2018; 32:607-614. [PMID: 28077604 DOI: 10.1093/humrep/dew341] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 12/08/2016] [Indexed: 12/16/2022] Open
Abstract
STUDY QUESTION Could the mitochondrial DNA (mtDNA) content of cumulus granulosa cells (CGCs) be related to oocyte competence? SUMMARY ANSWER The quality of embryos obtained during IVF procedures appears to be linked to mtDNA copy numbers in the CGCs. WHAT IS KNOWN ALREADY Oocyte quality is linked to oocyte mtDNA content in the human and other species, and the mtDNA copy number of the oocyte is related to that of the corresponding CGCs. Moreover, the quantification of CGC mtDNA has recently been proposed as a biomarker of embryo viability. STUDY DESIGN SIZE, DURATION An observational study was performed on 452 oocyte-cumulus complexes retrieved from 62 patients undergoing ICSI at the ART Center of the University Hospital of Angers, France, from January to May 2015. PARTICIPANTS/MATERIALS, SETTING, METHODS The average mtDNA content of CGCs was assessed by using a quantitative real-time PCR technique. The relationship between CGC mtDNA content and oocyte maturity and fertilizability, on one hand, and embryo quality, on the other, was investigated using univariate and multivariate generalized models with fixed and mixed effects. MAIN RESULTS AND THE ROLE OF CHANCE No relationship was found between CGC mtDNA content and oocyte maturity or fertilizability. In contrast, there was a significant link between the content of mtDNA in CGCs surrounding an oocyte and the embryo quality, with significantly higher mtDNA copy numbers being associated with good quality embryos compared with fair or poor quality embryos [interquartile range, respectively, 738 (250-1228) and 342 (159-818); P = 0.006]. However, the indication provided by the quantification of CGC mtDNA concerning the eventuality of good embryo quality was seriously subject to patient effect (AUC = 0.806, 95%CI = 0.719-0.869). The quantity of CGC mtDNA was influenced by BMI and smoking. LARGE SCALE DATA N/A. LIMITATIONS REASONS FOR CAUTION The quantification of CGC mtDNA may indicate embryo quality. However, since it is affected by patient specificity, it should be used with caution. It remains to be seen whether this marker could directly predict the implantation capacity of the embryo, which is the main objective in IVF practice. WIDER IMPLICATIONS OF THE FINDINGS Our study suggests that the quantification of CGC mtDNA may be a novel biomarker of embryo viability. However, patient specificity makes it impossible to establish a general threshold value, valid for all patients. Nevertheless, further studies are needed to determine whether the quantification of CGC mtDNA may, in combination with the morpho-kinetic method, offer an additional criterion for selecting the best embryo for transfer from a given cohort. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the University Hospital of Angers, the University of Angers, France, and the French national research centres INSERM and the CNRS. There were no competing interests.
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Affiliation(s)
- V Desquiret-Dumas
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France.,PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France
| | - A Clément
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - V Seegers
- SFR ICAT, Université Angers, Angers, France.,DRCI, Cellule Data Management, CHU Angers, Angers, France
| | - L Boucret
- PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France.,Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - V Ferré-L'Hotellier
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - P E Bouet
- Service de Gynécologie-Obstétrique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - P Descamps
- Service de Gynécologie-Obstétrique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - V Procaccio
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France.,PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France
| | - P Reynier
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France.,PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France
| | - P May-Panloup
- PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France.,Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
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Juge P, Borie R, Kannengiesser C, Gazal S, Revy P, Wemeau-Stervinou L, Debray M, Ottaviani S, Marchand-Adam S, Nathan N, Thabut G, Richez C, Nunes H, Callebaut I, Justet A, Leulliot N, Bonnefond A, Salgado D, Richette P, Desvignes J, Lioté H, Froguel P, Allanore Y, Sand O, Dromer C, Flipo R, Clément A, Béroud C, Sibilia J, Coustet B, Cottin V, Boissier M, Wallaert B, Schaeverbeke T, Moal FDL, Frazier A, Ménard C, Soubrier M, Saidenberg N, Valeyre D, Amselem S, Boileau C, Crestani B, Dieude P. Fond génétique partagé entre la pneumopathie interstitielle diffuse associée à la polyarthrite rhumatoïde et la fibrose pulmonaire idiopathique. Rev Mal Respir 2017. [DOI: 10.1016/j.rmr.2016.10.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
Eye and inner ear diseases are the most common sensory impairments that greatly impact quality of life. Zebrafish have been intensively employed to understand the fundamental mechanisms underlying eye and inner ear development. The zebrafish visual and vestibulo-acoustic systems are very similar to these in humans, and although not yet mature, they are functional by 5days post-fertilization (dpf). In this chapter, we show how the zebrafish has significantly contributed to the field of biomedical research and how researchers, by establishing disease models and meticulously characterizing their phenotypes, have taken the first steps toward therapies. We review here models for (1) eye diseases, (2) ear diseases, and (3) syndromes affecting eye and/or ear. The use of new genome editing technologies and high-throughput screening systems should increase considerably the speed at which knowledge from zebrafish disease models is acquired, opening avenues for better diagnostics, treatments, and therapies.
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Affiliation(s)
| | - A Clément
- University of Oregon, Eugene, OR, United States
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Clément A, Bacon R, Sirois S, Dorais M. Mature-ripe tomato spectral classification according to lycopene content and fruit type by visible, NIR reflectance and intrinsic fluorescence. Quality Assurance and Safety of Crops & Foods 2015. [DOI: 10.3920/qas2014.0521] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- A. Clément
- Agriculture and Agri-Food Canada, Food Research and Development Centre, 3600 Casavant Ouest, St-Hyacinthe, QC, J2S 8E3, Canada
| | - R. Bacon
- Agriculture and Agri-Food Canada, Horticultural Research Centre, Laval University, 2480 boulevard Hochelaga, Quebec, QC, G1V 0A6, Canada
| | - S. Sirois
- Agriculture and Agri-Food Canada, Food Research and Development Centre, 3600 Casavant Ouest, St-Hyacinthe, QC, J2S 8E3, Canada
| | - M. Dorais
- Agriculture and Agri-Food Canada, Horticultural Research Centre, Laval University, 2480 boulevard Hochelaga, Quebec, QC, G1V 0A6, Canada
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Noguera C, Fritz B, Clément A. Precipitation mechanism of amorphous silica nanoparticles: a simulation approach. J Colloid Interface Sci 2015; 448:553-63. [PMID: 25792478 DOI: 10.1016/j.jcis.2015.02.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/22/2015] [Accepted: 02/20/2015] [Indexed: 10/23/2022]
Abstract
HYPOTHESIS Despite its importance in numerous industrial and natural processes, many unsolved questions remain regarding the mechanism of silica precipitation in aqueous solutions: order of the reaction, role of silica oligomers, existence of an induction time and characteristics of the particle population. This may be traced back, in past models, to the lack of account of the first stages of nucleation, size dependence of the growth law, and full particle population. COMPUTATIONAL METHOD: A microscopic description of the nucleation and growth of amorphous silica nanoparticles is achieved which reproduces a large set of experimental measurements, under various thermodynamic conditions. The time evolution of the solution supersaturation and of the precipitate characteristics is established. FINDINGS A growth law of order 6 allows reproducing experimental results, without being correlated to the presence of silica oligomers in the aqueous solution. The saturation plateaus are shown not to be due to an induction period. The characteristics of the particle population are more complex than assumed by simple precipitation models (Johnson-Mehl-Avrami-Kolmogorov or Chronomal models) and strongly depend on how supersaturation is reached. Such a microscopic approach thus proves to be well suited to elucidate the mechanism of nanoparticle formation in natural and industrial contexts.
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Affiliation(s)
- C Noguera
- CNRS, INSP, UMR7588, F-75252 Paris Cedex 05, France; UPMC Univ Paris 06, INSP, UMR7588, F-75252 Paris Cedex 05, France.
| | - B Fritz
- Université de Strasbourg/EOST, CNRS, Laboratoire d'Hydrologie et Géochimie de Strasbourg, 1 rue Blessig, F-67084 Strasbourg Cedex, France
| | - A Clément
- Université de Strasbourg/EOST, CNRS, Laboratoire d'Hydrologie et Géochimie de Strasbourg, 1 rue Blessig, F-67084 Strasbourg Cedex, France
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Leduc O, Fumière E, Banse S, Vandervorst C, Clément A, Parijs T, Wilputte F, Maquerlot F, Ezquer Echandia M, Tinlot A, Leduc A. Identification and description of the axillary web syndrome (AWS) by clinical signs, MRI and US imaging. Lymphology 2014; 47:164-176. [PMID: 25915977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The Axillary Web Syndrome (AWS) follows surgery for breast neoplasia and consists of one, or more frequently two or three, cords of subcutaneous tissue. Cords originate from the axilla, spread to the antero-medial surface of the arm down to the elbow and then move into the antero-medial aspect of the forearm and sometimes into the root of the thumb. The purpose of this study was to compare two techniques, ultrasound (US) and Magnetic Resonance Imaging (MRI) for their sensitivity and accuracy in identifying AWS cords and to provide insights to the origin of this pathology. US examinations were performed on fifteen patients using a high frequency probe (17 MHz). We first palpated and marked the cord with location aided by maximum abduction. To identify the cord with MRI (1.5 Tesla), a catheter filled with a gel detectable under MRI was placed on the skin at the site of the cord. We found that in some US cases, the dynamic abduction maneuver was essential to facilitate detection of the cord. This dynamic method on ultrasound confirmed the precise location of the cord even if it was located deeper in the hypodermis fascia junction. US and MRI images revealed features of the cords and surrounding tissues. Imaging the cords was difficult with either of the imaging modalities. However, US seemed to be more efficient than MRI and allowed dynamic evaluation. Overall analysis of our study results supports a lymphatic origin of the AWS cord.
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Colin J, Clément A, Huguet M, Derien A, Yen-Potin F, Oster T, Malaplate-Armand C. Effets pro-vieillissement d’un régime hyperipidique sur la fonctionnalité d’une cible thérapeutique neuronale d’intérêt dans la maladie d’Alzheimer. NUTR CLIN METAB 2013. [DOI: 10.1016/s0985-0562(13)70333-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Fritz B, Clément A, Montes-Hernandez G, Noguera C. Calcite formation by hydrothermal carbonation of portlandite: complementary insights from experiment and simulation. CrystEngComm 2013. [DOI: 10.1039/c3ce26969h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Blanchon S, Bassinet L, Beydon N, Clément A, Escudier E, Papon JF, Tamalet A. Diagnostic algorithm for Primary Ciliary Dyskinesia: recommendations of the French National Centre for Rare Respiratory Diseases. Cilia 2012. [PMCID: PMC3555900 DOI: 10.1186/2046-2530-1-s1-p5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Blanchon S, Bassinet L, Clément A, Coste A, Escudier E, Thumerelle C. Diagnostic of Primary Ciliary Dyskinesia: guidelines to obtain appropriate ciliate cell samples. Cilia 2012. [PMCID: PMC3555800 DOI: 10.1186/2046-2530-1-s1-p4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Legendre M, Blanchon S, Copin B, Duquesnoy P, Montantin G, Kott E, Dastot F, Jeanson L, Cachanado M, Rousseau A, Papon JF, Tamalet A, Vojtek AM, Escalier D, Coste A, de Blic J, Clément A, Escudier E, Amselem S. Delineation of CCDC39/CCDC40 mutation spectrum and associated phenotypes in primary ciliary dyskinesia. Cilia 2012. [PMCID: PMC3555958 DOI: 10.1186/2046-2530-1-s1-p91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Leduc O, Sichere M, Moreau A, Rigolet J, Tinlot A, Darc S, Wilputte F, Strapart J, Parijs T, Clément A, Snoeck T, Pastouret F, Leduc A. Axillary web syndrome: nature and localization. Lymphology 2009; 42:176-181. [PMID: 20218085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Axillary Web Syndrome (AWS) is a complication that can arise in patients following treatment for breast cancer. It is also known variously as syndrome of the axillary cords, syndrome of the axillary adhesion, and cording lymphedema. The exact origin, presentation, course, and treatment of AWS is still largely undefined. Because so little is known about AWS, we undertook a case series study consisting of 15 women who had undergone breast cancer surgery and presented with AWS. All subjects received a clinical examination which included body size determination and detailed measurements of the size and location of the cords. The cords were found to originate from the axilla, continue on the medial aspect of the arm up to the epitrochlea region, then to the anteromedian aspect of the forearm, and finally reaching the base of the thumb. The cords averaged approximately 44% of the limb length. Correlation of the cord location with anatomical studies shows that in fact this path follows the specific course taken by the antero-radial pedicle which arises at the anterior aspect of the elbow from the brachial medial pedicule to anastomose in the axilla at the level of the lateral thoracic chain nodes. Although our series is small, the correspondence between the physical findings and the anatomical studies strongly supports the notion that the cords are lymphatic in origin.
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Affiliation(s)
- O Leduc
- Haute Ecole P.H. Spaak, Département de Kinésithérapie, Unité de Lympho-Phlébologie, Bruxelles, Belgique.
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Chantuma P, Lacointe A, Kasemsap P, Thanisawanyangkura S, Gohet E, Clément A, Guilliot A, Améglio T, Thaler P. Carbohydrate storage in wood and bark of rubber trees submitted to different level of C demand induced by latex tapping. Tree Physiol 2009; 29:1021-1031. [PMID: 19556234 DOI: 10.1093/treephys/tpp043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
When the current level of carbohydrates produced by photosynthesis is not enough to meet the C demand for maintenance, growth or metabolism, trees use stored carbohydrates. In rubber trees (Hevea brasiliensis Muell. Arg.), however, a previous study (Silpi U., A. Lacointe, P. Kasemsap, S. Thanisawanyangkura, P. Chantuma, E. Gohet, N. Musigamart, A. Clement, T. Améglio and P. Thaler. 2007. Carbohydrate reserves as a competing sink: evidence from tapping the rubber tree. Tree Physiol. 27:881-889) showed that the additional sink created by latex tapping results not in a decrease, but in an increase in the non-structural carbohydrate (NSC) storage in trunk wood. In this study, the response of NSC storage to latex tapping was further investigated to better understand the trade-off between latex regeneration, biomass and storage. Three tapping systems were compared to the untapped Control for 2 years. Soluble sugars and starch were analyzed in bark and wood on both sides of the trunk, from 50 to 200 cm from the ground. The results confirmed over the 2 years that tapped trees stored more NSC, mainly starch, than untapped Control. Moreover, a double cut alternative tapping system, which produced a higher latex yield than conventional systems, led to even higher NSC concentrations. In all tapped trees, the increase in storage occurred together with a reduction in trunk radial growth. This was interpreted as a shift in carbon allocation toward the creation of reserves, at the expense of growth, to cover the increased risk induced by tapping (repeated wounding and loss of C in latex). Starch was lower in bark than in wood, whereas it was the contrary for soluble sugars. The resulting NSC was twice as low and less variable in bark than in wood. Although latex regeneration occurs in the bark, changes related to latex tapping were more marked in wood than in bark. From seasonal dynamics and differences between the two sides of the trunk in response to tapping, we concluded that starch in wood behaved as the long-term reserve compartment at the whole trunk level, whereas starch in bark was a local buffer. Soluble sugars behaved like an intermediate, ready-to-use compartment in both wood and bark. Finally, the dynamics of carbohydrate reserves appears a relevant parameter to assess the long-term performance of latex tapping systems.
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Affiliation(s)
- P Chantuma
- Chachoengsao Rubber Research Center, RRIT-DOA, Sanam Chai Ket, Thailand
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Saint-Criq V, Le Rouzic P, Jacquot J, Clément A, Tabary O. Azithromycin is not able to decrease inflammatory process in cystic fibrosis cells. J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60206-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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28
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Guillemot N, Chadelat K, Nathan N, Aubertin G, Ducou le pointe H, Clément A, Fauroux B, Epaud R. Tuméfaction sternale chez un enfant de neuf ans. Med Mal Infect 2008; 38:278-80. [DOI: 10.1016/j.medmal.2007.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Accepted: 11/11/2007] [Indexed: 10/22/2022]
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Ameille J, Mattei N, Laurent F, Letourneux M, Paris C, Clément A, Chamming S, Conso F, Pairon JC. Computed tomography findings in urban transportation workers with low cumulative asbestos exposure. Int J Tuberc Lung Dis 2007; 11:1352-1357. [PMID: 18034958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
OBJECTIVE To assess the frequency of computed tomography (CT) scan pleural and interstitial changes in a population of urban transportation workers with low cumulative exposure to asbestos, and to measure inter-reader agreement. DESIGN A total of 269 male volunteers (mean age 54.0 +/- 2.3 years, mean estimated cumulative exposure index 1.7 +/- 2.3 fibres/ml-years), underwent a CT scan which was read independently by three experienced readers, with further consensus reading in case of pleural or parenchymal abnormalities. Inter-reader agreement was assessed by means of Kappa statistic. RESULTS On consensus reading, four subjects had interstitial opacities, three had diffuse pleural thickening and 26 (9.7%) had pleural plaques that were unilateral in 65% of cases and < or =2 mm thick in 54% of cases. No correlation was observed between pleural plaques and latency, duration of exposure or cumulative exposure. The inter-reader agreement for the detection of pleural abnormalities was fair. CONCLUSION In this relatively young population with low cumulative exposure to asbestos, the prevalence of pleural abnormalities was low. These abnormalities were very limited in thickness and extent, leading to marked inter-reader variability and making it difficult to assess their relationship to asbestos exposure.
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Affiliation(s)
- J Ameille
- AP-HP, Unité de Pathologie Professionnelle, Hôpital Raymond Poincaré, Université de Versailles, St Quentin en Yvelines, France.
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Silpi U, Lacointe A, Kasempsap P, Thanysawanyangkura S, Chantuma P, Gohet E, Musigamart N, Clément A, Améglio T, Thaler P. Carbohydrate reserves as a competing sink: evidence from tapping rubber trees. Tree Physiol 2007; 27:881-9. [PMID: 17331906 DOI: 10.1093/treephys/27.6.881] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Carbohydrate reserve storage in trees is usually considered a passive function, essentially buffering temporary discrepancies between carbon availability and demand in the annual cycle. Recently, however, the concept has emerged that storage might be a process that competes with other active sinks for assimilate. We tested the validity of this concept in Hevea brasiliensis Müll. Arg. (rubber) trees, a species in which carbon availability can be manipulated by tapping, which induces latex regeneration, a high carbon-cost activity. The annual dynamics of carbohydrate reserves were followed during three situations of decreasing carbon availability: control (no tapping), tapped and tapped with Ethephon stimulation. In untapped control trees, starch and sucrose were the main carbohydrate compounds. Total nonstructural carbohydrates (TNC), particularly starch, were depleted following bud break and re-foliation, resulting in an acropetal gradient of decreasing starch concentration in the stem wood. During the vegetative season, TNC concentration increased. At the end of the vegetative season, there were almost no differences in TNC concentration along the trunk. In tapped trees, the vertical gradient of starch concentration was locally disturbed by the presence of the tapping cut. However, the main effect of tapping was a dramatic increase in TNC concentration, particularly starch, throughout the trunk and in the root. The difference in TNC concentration between tapped and untapped trees was highest when latex production was highest (October); the difference was noticeable even in areas of the trees that are unlikely to be directly involved in latex regeneration, and it was enhanced by Ethephon stimulation, which is known to increase latex metabolism and flow duration. Thus, contrary to what could be expected if reserves serve as a passive buffer, a decrease in carbohydrate availability resulted in a net increase in carbohydrate reserves at the trunk scale. Such behavior supports the view that trees tend to adjust the amount of carbohydrate reserves stored to the level of metabolic demand, at the possible expense of growth.
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Affiliation(s)
- U Silpi
- DORAS Center, Kasetsart University, 10900 Bangkok, Thailand
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31
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Duburcq X, Pouzet A, Marant L, Clément A, Duhamel D, Leirens Y, Margotteau F, Falcou-Briatte R, Bouniort F, Taskar S, Flecheux O. P1178 A comparative study of the new Access® HBs Ag assay and the HBs Ag confirmatory assay from Beckman Coulter. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)71018-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
AIMS OF THE STUDY Respiratory-related evoked potentials (RREPs) are a method of recording brain activities in response to respiratory stimuli. Although data in childhood are scarce, the absence of the early P1 component of RREPs has been reported in children with a history of life-threatening asthma. This study was focused on the presence, latencies, and amplitudes of the P1, N1, P2, and N2 components of the RREPs in a paediatric series of asthmatic patients. PATIENTS AND METHODS RREPs were recorded in 21 patients with stable asthma, age range 8-17 years, 11 healthy children, age range 6-16 years, and 24 healthy adults, age range 20-28 years. The signals from left (C3-Cz) and right (C4-Cz) central (rolandic) location were recorded separately, using surface electrodes. Evoked responses to two series of 80 consecutive mid-inspiratory occlusions were averaged. Recordings were analysed manually. RESULTS All 4 RREPs components were significantly more often absent in asthmatic children than in healthy children and adults (P1, p=0.01; N1, p=0.008; P2, p=0.008, N2, p=0.01). The latencies and amplitudes of the four components were similar in patients and healthy subjects. CONCLUSION RREPs components were less frequently present in children with asthma than in healthy subjects. This finding should promote the recording of RREPs in other acute and chronic respiratory diseases in children in order to search for possible electroclinical correlations.
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Affiliation(s)
- F Nicot
- Unité Inserm U719, AP-HP, hôpital Armand-Trousseau, Paris, France
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Fauroux B, Clément A. Requisite for stringent control of oxygen therapy in the neonatal period. Eur Respir J 2007; 29:4-5. [PMID: 17197478 DOI: 10.1183/09031936.00132306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
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Epaud R, Guillemot N, Renolleau S, Clément A, Fauroux B. 389 Diagnostic étiologique et traitement de la pneumonie à Pneumocystis Jiroveci (PJ) chez le nourrisson. Rev Mal Respir 2007. [DOI: 10.1016/s0761-8425(07)72765-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aubertin G, Guillemot N, Fauroux B, Clément A, Epaud R. 434 Évolution des pleurésies de l’enfant. Rev Mal Respir 2007. [DOI: 10.1016/s0761-8425(07)72810-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Tabary O, Corvol H, Boncoeur E, Chadelat K, Fitting C, Cavaillon J, Clément A, Jacquot J. Neutrophil-epithelial cell crosstalk causes an amplified inflammatory response in airways of patients with cystic fibrosis. Rev Mal Respir 2006. [DOI: 10.1016/s0761-8425(06)71936-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Clément A, Droit-Volet S. Counting in a time discrimination task in children and adults. Behav Processes 2006; 71:164-71. [PMID: 16434150 DOI: 10.1016/j.beproc.2005.08.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2004] [Revised: 07/05/2005] [Accepted: 08/29/2005] [Indexed: 11/25/2022]
Abstract
The present study investigated in 5- and 8-year-olds, as well as in adults, the effect of verbal counting on temporal discrimination behavior in a generalization task with two duration ranges in order to test the scalar timing property. The results showed that counting improved temporal sensitivity in all age groups, although sensitivity to time remained lower in the younger children. Furthermore, in the 5-year-olds, the temporal generalization behavior conformed well to the scalar property of variance both in the counting and the non-counting condition. However, this conformity to the scalar timing property disappeared when counting was used in the 8-year-olds and the adults. The development of the ability to count time at a constant rhythm is discussed as the major reason for this departure of temporal behavior from the scalar property of variance when counting is employed.
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Affiliation(s)
- A Clément
- Blaise Pascal University, Clermont-Ferrand, France
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Brouard J, Corvol H, Boelle P, Knauer N, Vallet C, Henrion-Caude A, Boule M, Fauroux B, Ratjen F, Grasemann H, Clément A. 19 Influence of tumor necrosis factor gene polymorphisms on lung disease progression in children with Cystic Fibrosis. J Cyst Fibros 2006. [DOI: 10.1016/s1569-1993(06)80020-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Moore A, Escudier E, Roger G, Tamalet A, Pelosse B, Marlin S, Clément A, Geremek M, Delaisi B, Bridoux AM, Coste A, Witt M, Duriez B, Amselem S. RPGR is mutated in patients with a complex X linked phenotype combining primary ciliary dyskinesia and retinitis pigmentosa. J Med Genet 2005; 43:326-33. [PMID: 16055928 PMCID: PMC2563225 DOI: 10.1136/jmg.2005.034868] [Citation(s) in RCA: 180] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Primary ciliary dyskinesia (PCD) is a rare disease classically transmitted as an autosomal recessive trait and characterised by recurrent airway infections due to abnormal ciliary structure and function. To date, only two autosomal genes, DNAI1 and DNAH5 encoding axonemal dynein chains, have been shown to cause PCD with defective outer dynein arms. Here, we investigated one non-consanguineous family in which a woman with retinitis pigmentosa (RP) gave birth to two boys with a complex phenotype combining PCD, discovered in early childhood and characterised by partial dynein arm defects, and RP that occurred secondarily. The family history prompted us to search for an X linked gene that could account for both conditions. RESULTS We found perfect segregation of the disease phenotype with RP3 associated markers (Xp21.1). Analysis of the retinitis pigmentosa GTPase regulator gene (RPGR) located at this locus revealed a mutation (631_IVS6+9del) in the two boys and their mother. As shown by study of RPGR transcripts expressed in nasal epithelial cells, this intragenic deletion, which leads to activation of a cryptic donor splice site, predicts a severely truncated protein. CONCLUSION These data provide the first clear demonstration of X linked transmission of PCD. This unusual mode of inheritance of PCD in patients with particular phenotypic features (that is, partial dynein arm defects and association with RP), which should modify the current management of families affected by PCD or RP, unveils the importance of RPGR in the proper development of both respiratory ciliary structures and connecting cilia of photoreceptors.
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Affiliation(s)
- A Moore
- Institut National de la Santé et de la Recherche Médicale U. 654, Hôpital Henri-Mondor, Créteil, France
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41
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Abstract
The aim of the current study was to compare a clinical noninvasive method of setting up noninvasive pressure support ventilation (PS-NI) in young patients with cystic fibrosis (CF), based on parameters such as breathing frequency, arterial oxygen saturation and comfort rating, with a more invasive method (PS-I) targeted at optimising unloading of the inspiratory muscles and enhancing patient-ventilator synchronisation. PS-NI and PS-I were compared in random order in 10 children with CF. PS-NI differed from PS-I with regard to the level of inspiratory pressure (n=5), rate of inspiratory pressurisation (n=1), inspiratory trigger sensitivity (n=2) and expiratory trigger sensitivity (n=5). Although both methods modified breathing pattern, improved oxygen saturation and reduced diaphragmatic pressure time product (450+/-91 cmH2O.s(-1).min(-1) during spontaneous breathing, and 129+/-125 and 104+/-75 cmH2O.s(-1).min(-1) during PS-NI and PS-I, respectively), patient-ventilator synchrony and patient comfort were enhanced more during PS-I. In young patients with cystic fibrosis, setting up pressure support using a clinical noninvasive approach based on easily measurable parameters, such as respiratory rate and comfort rating, is as effective as a more invasive technique based on unloading of the inspiratory muscles and optimising patient-ventilator synchronisation. However, whilst the standard clinical method is satisfactory in the majority of patients, more invasive measurements should be considered in patients who have difficulty synchronising with the ventilator to enhance patient tolerance and compliance.
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Affiliation(s)
- B Fauroux
- Service de Pneumologie Pédiatrique and Research unit INSERM E 213, Hôpital d'Enfants Armand Trousseau, AP-HP 28, avenue du Docteur Arnold Netter, 75012 Paris, France.
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Abstract
The 'Vécu et Santé Perçue des Adolescents' (VSP-A) questionnaire is a French generic self-administered health-related quality of life (HRQL) instrument for adolescents which comprises 40 items, allowing the calculation of six dimensions as well as an index. Regression methods were used to select 12 items from the VSP-A to reproduce its HRQL index. The resulting 12-item short-form (VSP-A12) achieved an adjusted R2 of 0.907 in prediction of the VSP-A index. Scoring algorithm used to score this 12-item index achieved a R2 of 0.901 with the VSP-A index when cross-validated in the validation sample (n = 2941). Numerous tests of empirical validity previously published for the VSP-A were replicated for the VSP-A12, including comparisons between groups known to differ in terms of gender, age or health status. All the significant results shown by the VSP-A index were also encountered by the VSP-A12 summary measure. The ability of VSP-A12 to discriminate between healthy and ill adolescents was also proven. A test-retest correlation (4 weeks) of 0.745 was observed for the 12-item HRQL index in the target population (n = 664). Average score for this shorter index closely mirrored VSP-A index, although standard deviation was always greater for the VSP-A12.
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Affiliation(s)
- C Sapin
- Laboratoire de Santé Publique, Faculté de Médecine, Unité de Recherche Evaluation hospitalière, Mesure de la Santé Perçue, Marseille, France.
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Clément A, Henrion-Caude A. [Alveolar epithelium repair: a clinically relevant challenge for respiratory medicine]. Rev Mal Respir 2003; 20:844-6. [PMID: 14743084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
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Clément A, Vigouroux B. Unsupervised segmentation of scenes containing vegetation (Forsythia) and soil by hierarchical analysis of bi-dimensional histograms. Pattern Recognit Lett 2003. [DOI: 10.1016/s0167-8655(03)00034-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Clément A, Epaud R, Tamalet A, Fauroux B. [Management of patients with cystic fibrosis: role of corticosteroid therapy]. Rev Mal Respir 2003; 20:S137-9. [PMID: 12910146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Affiliation(s)
- A Clément
- Service de Pneumologie Pédiatrique-INSERM E213, Hôpital Armand Trousseau, Paris.
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Epaud R, Fauroux B, Boule M, Clément A. [Diseases of the pulmonary lymphatic system in children]. Rev Pneumol Clin 2003; 59:7-15. [PMID: 12717321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Diseases of the lymphatic system in children include a group of exceptional conditions difficult to manage. The anatomy of lymphatic system is complex in the lung. Variable from one subject to another, its complex physiology plays an important role in air-blood exchanges occurring in the lung. In the pulmonary interstitium and in the pleura, the lymphatic system acts like an overflow valve capable of regulating variations in interstitial fluid. The presence or development of dysplasic lymphatics causes leakage, dilatation, and reflux of the lymph through incontinent valves leading to chylothorax and/or fluid overload in the pulmonary interstitium. Symptomatic care is usually proposed, based on a fat-free diet supplemented with light-chain triglycerides and liposoluble vitamins. Other therapeutic options can be proposed. Medical options include cytotoxic agents, somatostatin, and interferon-alpha. Surgery may also be useful, but an assessment of therapeutic efficacy is very difficult due to partial effects and the small number of cases studied.
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Affiliation(s)
- R Epaud
- Service de Pneumologie Pédiatrique, INSERM E0213, Hôpital d'Enfants Armand-Trousseau, 26, avenue du Dr. Arnold-Netter, 75571 Paris Cedex 12.
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Affiliation(s)
- I Pin
- Département de pédiatrie, CHU de Grenoble, 38043 Grenoble, France.
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Fauroux B, Pigeot J, Polkey MI, Roger G, Boulé M, Clément A, Lofaso F. Chronic stridor caused by laryngomalacia in children: work of breathing and effects of noninvasive ventilatory assistance. Am J Respir Crit Care Med 2001; 164:1874-8. [PMID: 11734439 DOI: 10.1164/ajrccm.164.10.2012141] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Breathing pattern, gas exchange, and respiratory effort were assessed in five awake children with chronic stridor caused by laryngomalacia during spontaneous breathing (SB) and noninvasive mechanical ventilation (NIMV). During SB, the youngest children were able to maintain normal gas exchange at the expense of an increased work of breathing as assessed by calculated diaphragmatic pressure-time product (PTPdi), whereas the opposite was observed in the older children. NIMV increased tidal volume, from 8.77 +/- 2.04 ml/kg during SB to 11.67 +/- 2.52 ml/kg during NIMV, p = 0.04, and decreased respiratory rate, from 24.4 +/- 5.6 breaths/ min during SB to 16.6 +/- 0.9 breaths/min during NIMV, p = 0.04. NIMV unloaded the respiratory muscles as reflected by the significant reduction in PTPdi, from a mean value of 541.0 +/- 196.6 cm H(2)O x s x min(-1) during SB to 214.8 +/- 116.0 cm H(2)O x s x min(-1) during NIMV, p = 0.04. Therefore, NIMV successfully relieves the additional load imposed on the respiratory muscles. Long-term home NIMV was provided to a total of 12 children with laryngomalacia (including these five) and was associated with clinical improvement in sleep and growth.
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Affiliation(s)
- B Fauroux
- Pediatric Pulmonary Department, Armand Trousseau Hospital, Assistance Publique, Hôpitaux de Paris, Paris, France.
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49
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Abstract
Children aged 3, 5, and 8 years were tested on temporal generalization with visual stimuli. Different groups received 4- and 8-s standards. Gradients at all ages superimposed when plotted on the same relative scale, indicating underlying scalar timing. The principal developmental changes were (i) increasing sharpness of the generalization gradient with increasing age and (ii) a change from symmetrical (3 and 5 years) to adultlike asymmetrical generalization gradients in the oldest children. Theoretical modeling attributed these changes to increasing precision of the reference memory of the standard with increasing age, as well as a decreased tendency to "misremember" the standard as being shorter than it actually was, as the children developed.
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Fauroux B, Pigeot J, Polkey MI, Isabey D, Clément A, Lofaso F. In vivo physiologic comparison of two ventilators used for domiciliary ventilation in children with cystic fibrosis. Crit Care Med 2001; 29:2097-105. [PMID: 11700403 DOI: 10.1097/00003246-200111000-00009] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Home noninvasive mechanical ventilation (NIMV) is used with increasing frequency for the treatment of patients with respiratory failure caused by cystic fibrosis, yet the optimal mode of ventilation in such children is unknown. We compared the physiologic short-term effects of two ventilators with different modes (one pressure support and the other assist control/volume-targeted [AC/VT]) commonly used for domiciliary ventilation. DESIGN Prospective, randomized, crossover comparison of two ventilators with different modes. SETTING Tertiary pediatric university hospital. PATIENTS Eight children with cystic fibrosis (age, 11-17 yrs) and chronic respiratory failure (pH 7.4 +/- 0.0; PaO2, 57.5 +/- 7.5 torr; PaCO2, 46.1 +/- 2.5 torr), naive to NIMV. INTERVENTIONS Two 20-min runs of pressure support and AC/VT ventilation were performed in random order, each run being preceded and followed by 20 mins of spontaneous breathing. MEASUREMENTS Flow and airway pressure and esophageal and gastric pressures were measured to calculate esophageal (PTPes) and diaphragmatic pressure-time product (PTPdi) and the work of breathing. RESULTS The two NIMV sessions significantly improved blood gas variables and increased tidal volume with no change in respiratory rate. Indexes of respiratory effort decreased significantly during the two modes of NIMV compared with spontaneous breathing, with PTPdi/min decreasing from 497.8 +/- 115.4 cm H2O x sec x min(-1) during spontaneous breathing to 127.8 +/- 98.3 cm H2O x sec x min(-1) and 184.3 +/- 79.8 cm H2O x sec x min(-1), during AC/VT and pressure support, respectively (p <.0001), and the work of breathing decreasing from 1.83 +/- 0.12 J.L-1 during spontaneous breathing to 0.48 +/- 0.32 J.L-1 and 0.75 +/- 0.30 J.L-1, during AC/VT and pressure support, respectively (p <.0001). In addition, the effect of AC/VT ventilation was significantly superior to pressure support judged by PTPes and the work of breathing, but this result was explained by three patients who adapted extremely well to the AC/VT ventilation, with the disappearance of ventilator triggering, in effect adopting a controlled mode. There was a correlation between the improvement in PTPdi/min or the work of breathing and patient's subjective impression of comfort during the AC/VT ventilation. CONCLUSIONS In awake, stable children with cystic fibrosis, both AC/VT and pressure support unloaded the respiratory muscles. The disappearance of ventilator triggering occurred in a subgroup of patients during AC/VT ventilation, and this explained the good tolerance and the superiority of this mode in the present study.
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Affiliation(s)
- B Fauroux
- Pediatric Pulmonary Department, Armand Trousseau Hospital (BF, AC), Assistance Publique, Hôpitaux de Paris, Paris, France
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