1
|
Buske C, Dreyling M, Alvarez-Larrán A, Apperley J, Arcaini L, Besson C, Bullinger L, Corradini P, Giovanni Della Porta M, Dimopoulos M, D'Sa S, Eich HT, Foà R, Ghia P, da Silva MG, Gribben J, Hajek R, Harrison C, Heuser M, Kiesewetter B, Kiladjian JJ, Kröger N, Moreau P, Passweg JR, Peyvandi F, Rea D, Ribera JM, Robak T, San-Miguel JF, Santini V, Sanz G, Sonneveld P, von Lilienfeld-Toal M, Wendtner C, Pentheroudakis G, Passamonti F. Managing hematological cancer patients during the COVID-19 pandemic: an ESMO-EHA Interdisciplinary Expert Consensus. ESMO Open 2022; 7:100403. [PMID: 35272130 PMCID: PMC8795783 DOI: 10.1016/j.esmoop.2022.100403] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 01/13/2022] [Accepted: 01/18/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The COVID-19 pandemic has created enormous challenges for the clinical management of patients with hematological malignancies (HMs), raising questions about the optimal care of this patient group. METHODS This consensus manuscript aims at discussing clinical evidence and providing expert advice on statements related to the management of HMs in the COVID-19 pandemic. For this purpose, an international consortium was established including a steering committee, which prepared six working packages addressing significant clinical questions from the COVID-19 diagnosis, treatment, and mitigation strategies to specific HMs management in the pandemic. During a virtual consensus meeting, including global experts and lead by the European Society for Medical Oncology and the European Hematology Association, statements were discussed and voted upon. When a consensus could not be reached, the panel revised statements to develop consensual clinical guidance. RESULTS AND CONCLUSION The expert panel agreed on 33 statements, reflecting a consensus, which will guide clinical decision making for patients with hematological neoplasms during the COVID-19 pandemic.
Collapse
Affiliation(s)
- C Buske
- Institute of Experimental Cancer Research, Department of Internal Medicine III, University Hospital Ulm, Ulm, Germany.
| | - M Dreyling
- Department of Medicine III at LMU Hospital, Munich, Germany
| | - A Alvarez-Larrán
- Hematology Department, Hospital Clínic, IDIBAPS, Barcelona, Spain
| | - J Apperley
- Centre for Haematology, Imperial College London, Hammersmith Hospital, London, UK
| | - L Arcaini
- Division of Hematology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - C Besson
- Service d'Hématologie Oncologie, Centre Hospitalier de Versailles, Le Chesnay, France; UVSQ, Inserm, CESP, Villejuif, France
| | - L Bullinger
- Department of Hematology, Oncology, and Tumorimmunology, Campus Virchow Klinikum, Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - P Corradini
- Hematology Division, University of Milan, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy
| | - M Giovanni Della Porta
- Cancer Center, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - M Dimopoulos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - S D'Sa
- UCLH Centre for Waldenström and Neurohaematology, University College London Hospitals NHS Foundation Trust, London, UK
| | - H T Eich
- Department of Radiation Oncology, University of Muenster, Münster, Germany
| | - R Foà
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - P Ghia
- Strategic Research Program on Chronic Lymphocytic Leukemia and Laboratory of B Cell Neoplasia, Division of Molecular Oncology, Università Vita-Salute San Raffaele and IRCCS Ospedale San Raffaele, Milan, Italy
| | - M G da Silva
- Department Of Hematology, Portuguese Institute of Oncology, Lisbon, Portugal
| | - J Gribben
- Barts Cancer Institute, Queen Mary University of London, London, UK
| | - R Hajek
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
| | - C Harrison
- Clinical Director - Haematology, Haemostasis, Palliative Care, Cellular Pathology, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - M Heuser
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hanover, Germany
| | - B Kiesewetter
- Department of Medicine I, Division of Oncology, Medical University of Vienna, Vienna, Austria
| | - J J Kiladjian
- Université de Paris, APHP, Hôpital Saint-Louis, Centre d'Investigations Cliniques, Paris, France
| | - N Kröger
- Department of Stem Cell Transplantation, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - P Moreau
- Hematology Department, University Hospital Hotel-Dieu, Nantes, France
| | - J R Passweg
- Hematology Division, Basel University Hospital, Basel, Switzerland
| | - F Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Milan, Italy; Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - D Rea
- University Medical Department of Hematology and Immunology, France Intergroupe des Leucémies Myéloïdes Chroniques (Fi-LMC), Hôpital Saint-Louis, Paris, France
| | - J-M Ribera
- Clinical Hematology Department, ICO-Hospital Germans Trias i Pujol, Josep Carreras Research Institute, Universitat Autònoma de Barcelona, Badalona, Spain
| | - T Robak
- Department of Hematology, Medical University of Lodz, Lodz, Poland
| | - J F San-Miguel
- Clínica Universidad de Navarra (CUN), Centro de Investigación Aplicada (CIMA), Instituto de Investigación Sanitaria de Navarra (IDISNA), CIBERONC, Pamplona, Spain
| | - V Santini
- MDS Unit, Hematology, DMSC, AOUC, University of Florence, Florence, Italy
| | - G Sanz
- Hematology Department, Hospital Univesitario y Politecnico La Fe, Valencia; CIBERONC, IS Carlos III, Madrid, Spain
| | - P Sonneveld
- Erasmus MC Cancer Institute, Department of Haematology, Rotterdam, The Netherlands
| | - M von Lilienfeld-Toal
- Department of Hematology and Medical Oncology, University Hospital Jena, Jena, Germany; Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Jena, Germany
| | - C Wendtner
- Munich Clinic Schwabing, Academic Teaching Hospital, Ludwig-Maximilian University, Munich, Germany
| | - G Pentheroudakis
- Scientific and Medical Division, European Society for Medical Oncology, Lugano, Switzerland
| | - F Passamonti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy.
| |
Collapse
|
2
|
Paunescu A, Paget J, Bergman CC, Malak S, Le Gouill S, Ribrag V, Bouabdallah K, Sibon D, Rumpold G, Preau M, Mounier N, Haioun C, Jardin F, Besson C. GENDER DISPARITIES IN QUALITY OF LIFE OF FRENCH PATIENTS ONE YEAR AFTER THE DIAGNOSIS OF LYMPHOMA. A LYSA STUDY. Hematol Oncol 2021. [DOI: 10.1002/hon.192_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | | | - S. Malak
- Curie Hematology Saint‐Cloud France
| | | | - V. Ribrag
- Gustave Roussy Hematology Villejuif France
| | | | - D. Sibon
- CHU Necker, Hematology Paris France
| | - G. Rumpold
- Medical University Innsbruck Department of Medical Psychology Innsbruck Austria
| | - M. Preau
- Université Lyon 2 GRePS Lyon France
| | | | - C. Haioun
- Henri Mondor University Hospital Lymphoid malignancies unit Créteil France
| | - F. Jardin
- Centre Henri Becquerel Hematology Rouen France
| | - C. Besson
- CH Versailles, Hematology Le Chesnay France
| |
Collapse
|
3
|
Camus V, Rossi C, Sesques P, Lequesne J, Tonnelet D, Haioun C, Durot E, Willaume A, Gauthier M, Moles‐Moreau M, Antier C, Lazarovici J, Monjanel H, Bernard S, Tardy M, Besson C, Lebras L, Choquet S, Le Du K, Bonnet C, Bailly S, Damaj G, Laribi K, Maisonneuve H, Houot R, Chauchet A, Jardin F, Traverse‐Glehen A, Decazes P, Becker S, Berriolo‐Riedinger A, Tilly H. OUTCOMES AFTER FIRST‐LINE IMMUNOCHEMOTHERAPY FOR PRIMARY MEDIASTINAL B CELL LYMPHOMA PATIENTS: A LYSA STUDY. Hematol Oncol 2021. [DOI: 10.1002/hon.50_2879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- V. Camus
- Centre Henri Becquerel Department of Hematology Rouen France
| | - C. Rossi
- Dijon University Hospital Hematology Dijon France
| | - P. Sesques
- CHU Lyon Sud, Hematology Pierre‐Bénite France
| | - J. Lequesne
- Centre Henri Becquerel Clinical Research Unit Rouen France
| | - D. Tonnelet
- Centre Henri Becquerel Department of Nuclear Medicine Rouen France
| | - C. Haioun
- CHU Mondor, Hematology Créteil France
| | - E. Durot
- CHU Reims Hematology Reims France
| | | | | | | | | | | | | | | | - M. Tardy
- Centre Antoine Lacassagne Hematology Nice France
| | - C. Besson
- Centre Hospitalier de Versailles Hematology Le Chesnay France
| | - L. Lebras
- Centre Leon Berard Hematology Lyon France
| | - S. Choquet
- CHU La pitié salpetriere Hematology Paris France
| | - K. Le Du
- Clinique Victor Hugo Hematology Le Mans France
| | - C. Bonnet
- Liege University Hospital Hematology Liege Belgium
| | - S. Bailly
- Cliniques Universitaires Saint Luc Hematology Bruxelles Belgium
| | | | - K. Laribi
- CH Le Mans Hematology Le Mans France
| | - H. Maisonneuve
- CH Departemental de Vendée Hematology la Roche sur Yon France
| | - R. Houot
- CHU Rennes Hematology Rennes France
| | | | - F. Jardin
- Centre Henri Becquerel Department of Hematology Rouen France
| | | | - P. Decazes
- Centre Henri Becquerel Department of Nuclear Medicine Rouen France
| | - S. Becker
- Centre Henri Becquerel Department of Nuclear Medicine Rouen France
| | | | - H. Tilly
- Centre Henri Becquerel Department of Hematology Rouen France
| |
Collapse
|
4
|
Laurent C, Hamon M, Syrykh C, Adélaï J, Guille A, Parrens M, Dartigues P, Bardet A, Mescam L, Schiano De Colella J, Sujobert P, Besson C, Birnbaum D, Xerri L. RESISTANCE OF B‐CELL LYMPHOMAS TO CAR‐T CELL THERAPY IS ASSOCIATED WITH HISTOPHENOTYPICAL AND GENOMIC TUMOR CHANGES WHICH CAN INDUCE PROFOUND TRANS‐DIFFERENTIATION. Hematol Oncol 2021. [DOI: 10.1002/hon.190_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - M. Hamon
- Hopital André Mignot Pathology Versailles France
| | | | - J. Adélaï
- IPC, Predictive Oncology/ CRCM Inserm CNRS AMU Marseille France
| | - A. Guille
- CRCM Predictive oncology Marseille France
| | - M. Parrens
- Hopital haut‐Lévéque, Pathology Bordeaux France
| | | | - A. Bardet
- Institut Paoli‐Calmettes pathology Marseille France
| | - L. Mescam
- Institut Paoli‐Calmettes pathology Marseille France
| | | | - P. Sujobert
- CHU Lyon‐Sud, Hématology Pierre‐Bénite France
| | - C. Besson
- Hopital André Mignot Pathology Versailles France
| | | | - L. Xerri
- Institut Paoli‐Calmettes pathology Marseille France
| |
Collapse
|
5
|
Martin D, Besson C, Pache B, Michel A, Geinoz S, Gremeaux-Bader V, Larcinese A, Benaim C, Kayser B, Demartines N, Hübner M. Feasibility of a prehabilitation program before major abdominal surgery. Br J Surg 2021. [DOI: 10.1093/bjs/znab202.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Objective
Prehabilitation programs claim to improve exercise capacity and postoperative outcomes. The study aim was to assess the feasibility of a prehabilitation program and its effects on fitness and clinical outcomes after major abdominal surgery.
Methods
In this prospective pilot study, patients were assigned to high-intensity physical exercise training with 3 training sessions per week for 3 weeks preoperatively. Feasibility of this intervention was assessed based on recruitment and adherence to the training program. Impact on fitness (VO2 AT) was evaluated and correlated with complications and length of stay (LOS).
Results
Of 980 eligible patients, 87 patients (8.9%) were approached for inclusion. Main obstacles to not approach patients were insufficient time (< 3 weeks) prior to scheduled surgery (n = 276, 28.2%) or screening failure (n = 312, 31.8%). Out of these 87 patients, 24 (28%) declined to participate, 43 (49%) met exclusion criteria and 20 (23%) were included. Six patients (30%) could not complete the prehabilitation program due to contra-indication for exercise training evidenced during the test (n = 3), lack of motivation (n = 2) and modification of the planned operating date (n = 1). VO2 AT increased from 9.8 to 11.5 ml/min/kg (p = 0.050). There were no correlations between the change in VO2 AT and postoperative complications (r = -0.133, p = 0.649) and LOS (r = -0.94, p = 0.750).
Conclusion
Prehabilitation programs are difficult to implement and many patients are either not eligible or not motivated. Future efforts should concentrate on those patients who are most likely to benefit from these time- and cost-intensive interventions.
Collapse
Affiliation(s)
- D Martin
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - C Besson
- Sports Medicine Center, Physical Medicine and Rehabilitation, Lausanne University Hospital, Lausanne, Switzerland
| | - B Pache
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - A Michel
- Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - S Geinoz
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - V Gremeaux-Bader
- Sports Medicine Center, Physical Medicine and Rehabilitation, Lausanne University Hospital, Lausanne, Switzerland
| | - A Larcinese
- Physiotherapy, Lausanne University Hospital, Lausanne, Switzerland
| | - C Benaim
- Department of Rheumatology, Physical Medicine and Rehabilitation, Lausanne University Hospital, Lausanne, Switzerland
| | - B Kayser
- Institute of Sport Sciences, University of Lausanne, Lausanne, Switzerland
| | - N Demartines
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| | - M Hübner
- Department of Visceral Surgery, Lausanne University Hospital, Lausanne, Switzerland
| |
Collapse
|
6
|
Besson C, Chareyre S, Kirouani N, Jean-Jean S, Bretagnolle C, Henry A, Leboucher G, Charpiat B. [Contribution of a hospital pharmacy team to critical care of patients infected with SARS-CoV-2]. Ann Pharm Fr 2021; 79:473-480. [PMID: 33516718 PMCID: PMC7844381 DOI: 10.1016/j.pharma.2021.01.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 01/08/2021] [Accepted: 01/12/2021] [Indexed: 11/19/2022]
Abstract
Le circuit du médicament hospitalier le plus sûr est la dispensation journalière individuelle nominative automatisée assurée par la pharmacie. Depuis plusieurs années nous essayons de convaincre les décideurs hospitaliers de l’implanter dans notre établissement. En attendant, pour pallier les risques d’erreurs médicamenteuses encourus par les patients et les soignants, nous avons constitué plusieurs équipes de travail au sein des unités de soins. Ces équipes sont constituées d’un pharmacien et d’un ou deux préparateurs en pharmacie hospitalière qui assurent notamment la gestion des armoires à pharmacie des unités de soins. La collaboration étroite avec médecins et personnel infirmier développée au fil des années a été un élément favorable déterminant lorsqu’il a fallu doter en médicaments et en dispositifs médicaux stériles (DMS) les nouvelles unités de soins critiques face à l’afflux de patients contaminés par le SARS-CoV2. Le suivi quotidien des médicaments consommés par patient, particulièrement les curares, et des DMS en rupture d’approvisionnement a été un élément clé de la gestion des stocks et des changements de principes actifs, de conditionnements et/ou de références de matériel. Les faits relatés donnent du poids au rapport Claris qui souligne les effets positifs en termes de qualité et de sécurité de prise en charge des patients du travail des PPH et pharmaciens dans les unités de soins. Ils soulignent par ailleurs les dangers auxquels sont exposés patients et soignants samedi, dimanche et jours fériés quand la pharmacie est fermée. Ils légitiment la question de l’extension de l’ouverture de la pharmacie en équipe complète 365 jours par an.
Collapse
Affiliation(s)
- C Besson
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04
| | - S Chareyre
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04
| | - N Kirouani
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04
| | - S Jean-Jean
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04
| | - C Bretagnolle
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04
| | - A Henry
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04
| | - G Leboucher
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04
| | - B Charpiat
- Service pharmaceutique, hôpital de la Croix-Rousse, groupement hospitalier nord, Hospices Civils de Lyon, 103, Grande rue de la Croix-Rousse, 69317 Lyon cedex 04.
| |
Collapse
|
7
|
Severyns T, Kirchgesner J, Lambert J, Thieblemont C, Amiot A, Abitbol V, Treton X, Cazals-Hatem D, Malamut G, Coppo P, Galicier L, Walter-Petrich A, Deau-Fischer B, Besson C, Aparicio T, Beaugerie L, Allez M, Gornet JM. Prognosis of Lymphoma in Patients With Known Inflammatory Bowel Disease: A French Multicentre Cohort Study. J Crohns Colitis 2020; 14:1222-1230. [PMID: 32161943 DOI: 10.1093/ecco-jcc/jjaa048] [Citation(s) in RCA: 4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND AND AIMS The prognosis of lymphoma that occurs in patients with inflammatory bowel disease [IBD] is poorly known. METHODS A multicentre retrospective cohort analysis was done in seven French tertiary centres from 1999 to 2019. Only lymphoma occurring in patients with previous established diagnosis of IBD were analysed. The primary outcome was progression-free survival at 3 years. RESULTS A total of 52 patients [male 65%, Crohn's disease 79%, median age 48.3 years, median duration of IBD 10.1 years] were included, of whom 37 had been previously exposed to immunosuppressants and/or biologics for at least 3 months and 20 had primary intestinal lymphomas. The lymphoma histological types were: diffuse large B cell lymphomas [N = 17], Hodgkin lymphomas [N = 17], indolent B cell lymphomas [N = 12], and others including T cell lymphomas, mantle cell lymphomas, and unclassifiable B cell lymphoma [N = 6]. The median follow-up after lymphoma was 5.1 years (interquartile range [IQR] 4-7.8). Progression-free survival at 3 years was 85% in the overall population (95% confidence interval [CI] 75%-96%) with no significant difference between the exposed and unexposed group, 79% for patients exposed to immunosuppressants and/or biologics [95% CI 67%-94%], and 83% for patients diagnosed with primary intestinal lymphoma [95% CI 67%-100%]. No relapse of IBD has been observed during chemotherapy. The IBD relapse rate at the end of the last chemotherapy cycle was 23% at 3 years [95% CI 11%-39%] in the overall population. CONCLUSIONS In this large cohort, the prognosis for lymphomas occurring in IBD appears to be good and similar to what is expected, irrespective of the exposure to biologics and/or immunosuppressants.
Collapse
Affiliation(s)
- T Severyns
- Service de Gastroentérologie, Hôpital Saint Louis, Université de Paris, Paris, France
| | - J Kirchgesner
- Service de Gastroentérologie, Hôpital Saint-Antoine, Sorbonne Université, Paris, France
| | - J Lambert
- Service de Biostatistiques et Information Médicale, Hôpital Saint-Louis, Université de Paris, Paris, France
| | - C Thieblemont
- Service d'Hémato-oncologie, Hôpital Saint-Louis, Université de Paris, Paris, France
| | - A Amiot
- Service de Gastroentérologie, Hôpital Henri Mondor, UPEC, Créteil, France
| | - V Abitbol
- Service de Gastroentérologie, Hôpital Cochin, Université de Paris, Paris, France
| | - X Treton
- Service de Gastroentérologie, Hôpital Beaujon, Université de Paris, Clichy La Garenne, France
| | - D Cazals-Hatem
- Département de Pathologie, Hôpital Beaujon, Université de Paris, Clichy La Garenne. France
| | - G Malamut
- Service de Gastroentérologie, Hôpital Européen Georges Pompidou, Université de Paris, Paris, France
| | - P Coppo
- Service d'Hématologie, Hôpital Saint-Antoine, Sorbonne Université, Paris, France
| | - L Galicier
- Service d'Immunohématologie, Hôpital Saint Louis, Université de Paris, Paris, France
| | - A Walter-Petrich
- Service de Biostatistiques et Information Médicale, Hôpital Saint-Louis, Université de Paris, Paris, France
| | - B Deau-Fischer
- Service d'Hématologie, Hôpital Cochin, Université de Paris, Paris, France
| | - C Besson
- Service d'Hématologie-Oncologie, Centre Hospitalier de Versailles, Université Versailles Saint Quentin en Yvelines, Université de Paris-Saclay, Le Chesnay, France
| | - T Aparicio
- Service de Gastroentérologie, Hôpital Saint Louis, Université de Paris, Paris, France
| | - L Beaugerie
- Service de Gastroentérologie, Hôpital Saint-Antoine, Sorbonne Université, Paris, France
| | - M Allez
- Service de Gastroentérologie, Hôpital Saint Louis, Université de Paris, Paris, France
| | - J M Gornet
- Service de Gastroentérologie, Hôpital Saint Louis, Université de Paris, Paris, France
| |
Collapse
|
8
|
Michel DT, Dolfi-Bouteyre A, Goular D, Augère B, Planchat C, Fleury D, Lombard L, Valla M, Besson C. Onboard wake vortex localization with a coherent 1.5 µm Doppler LIDAR for aircraft in formation flight configuration. Opt Express 2020; 28:14374-14385. [PMID: 32403478 DOI: 10.1364/oe.377049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
An onboard LIght Detection And Ranging (LIDAR) sensor designed to track wake vortex created by aircraft in formation flight is presented. It uses short pulses (75 ns) to obtain a spatial resolution of ∼22.5 m required to resolve small-scale structures of vortices and a blind zone of 17.5 m to locate vortices next to the wing tip. Monte Carlo simulations show that vortex centers could be located within ±0.5 m. Flight tests were performed with two aircraft in formation flight configuration. The LIDAR, installed in the following aircraft, was able to measure, in real time (every 6 s), the air flow velocities induced by the vortices created by the leading aircraft. The software was used to determine the vortex centers. These measurements were coupled to global positioning system (GPS) measurements of the two aircraft positions to determine the falling velocity of the vortices and infer their circulations.
Collapse
|
9
|
Michel DT, Valla M, Goular D, Lombard L, Dolfi-Bouteyre A, Besson C. Characterisation of Small-Scale Atmospheric Wind-Field Structures Using Coherent Wind Lidar With Short Pulses. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023706002] [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: 11/14/2022] Open
Abstract
A lidar design has been developed at ONERA that uses short square pulses (75 ns) to have a small spatial resolution (22.5 m) and be able to measure small-scale atmospheric wind-field structures. Results show that the system is able to resolve the small-scale structures of vortices and to measure wind field structures of a turbulent wind field down to ~20 m.
Collapse
|
10
|
Besson C, Morisse M, Brut H, Waissi W, Noel G, Chauffert B, Prébay D, Schott R, Etienne-Selloum N. P14.125 Retrospective analysis of long-term response to bevacizumab in combination with irinotecan for recurrent glioblastoma: identification of prognostic factors. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
In absence of standard treatment for recurrent glioblastoma (rGBM), numerous prospective and retrospective studies have evaluated the off-label combination of bevacizumab (BEV) with irinotecan (IRI) in patients with rGBM. We report here our single center experience with this combination and we investigated prognostic factors for long-term response.
MATERIAL AND METHODS
We performed a retrospective analysis of consecutive patients treated initially by Stupp protocol and with BEV-IRI for a rGBM between 2007 and 2017. Times to progression and overall survival, as well as toxicities, were investigated and analysed. Patients without progression at least 12 month after the first administration of BEV-IRI were considered as long-term responders. The primary end-point was overall survival post-BEV-IRI (OS-BEV-IRI).
RESULTS
One-hundred eleven patients were eligible for the analysis. Median age at the diagnosis was 57 years and the value of WHO Performance Status (PS) at the recurrence was 0 to 1 for 67,5% of patients. Kaplan-Meier median progression-free survival (PFS-BEV-IRI) and overall survival (OS-BEV-IRI) at recurrence estimates (calculated from start of BEV-IRI) were 6.51 and 10.41 months, respectively. The median OS (calculated from diagnosis) was 22,4 months. Twenty-Three patients (20,7%) were long-term responders to BEV-IRI regimen. This subgroup was not significantly different than the short-term responders according to age or PS distribution, but the relative proportion of biopsy in comparison to other surgery modalities was significantly increased in long-term responders (p<0,0001). Univariate analysis showed that PS 0–1 (p=0,007), biopsy (p=0,0022) are significantly associated with a better prognosis, but not age. Eighty three patients (75%) had toxicities, mainly grade 1 and 2 (92%), such as hypertension, proteinuria, haemorrhage, thrombosis, nausea, diarrhoea, fatigue or neutropenia. Most of the grade 3 and grade 4 toxicities were related to BEV treatment. Adverse events were significantly more frequent in long-term responders (p=0,0096).
CONCLUSION
BEV-IRI Combination is well tolerated and may offer some clinical benefits in recurrent GBM patients, more particularly if only biopsy was performed instead of surgery. Our results strengthened the role of these agents for the treatment of recurrent GBM.
Collapse
Affiliation(s)
- C Besson
- Service de Pharmacie, Centre de Lutte contre le Cancer Paul Strauss, Strasbourg, France
| | - M Morisse
- Service d’oncologie médicale, CHU Amiens-Picardie, Amiens, France
| | - H Brut
- Service de Pharmacie, Centre de Lutte contre le Cancer Paul Strauss, Strasbourg, France
| | - W Waissi
- Service de radiothérapie, Centre de Lutte contre le Cancer Paul Strauss, Strasbourg, France
| | - G Noel
- Service de radiothérapie, Centre de Lutte contre le Cancer Paul Strauss, Strasbourg, France
| | - B Chauffert
- Service d’oncologie médicale, CHU Amiens-Picardie, Amiens, France
| | - D Prébay
- Service de Pharmacie, Centre de Lutte contre le Cancer Paul Strauss, Strasbourg, France
| | - R Schott
- Service d’oncologie médicale, Centre de Lutte contre le Cancer Paul Strauss, Strasbourg, France
| | - N Etienne-Selloum
- UMR 7021 CNRS/Unistra, Laboratoire de Bioimagerie et Pathologies, Faculté de pharmacie, Illkirch-Graffenstaden, France
- Service de Pharmacie, Centre de Lutte contre le Cancer Paul Strauss, Strasbourg, France
| |
Collapse
|
11
|
Khoury E, Mendola A, Choquet S, Landman-Parker J, Veiga da Cunha M, Besson C, Limaye N, Poirel H. GENETIC PREDISPOSITION OF FAMILIAL HODGKIN LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.28_2631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- E. Khoury
- De Duve Institute; UCLouvain; Brussels Belgium
| | - A. Mendola
- De Duve Institute; UCLouvain; Brussels Belgium
| | - S. Choquet
- Service d'Hématologie; CHU La Pitié Salpétrière; Paris France
| | - J. Landman-Parker
- Service d'Hématologie et d'Oncologie Pédiatrique; Hôpital Armand Trousseau; Paris France
| | | | - C. Besson
- Unité d'Hémato-Oncologie - INSERM Unit 1018; Centre Hospitalier de Versailles - Université Versailles Saint Quentin en Yvelines; Versailles France
| | - N. Limaye
- De Duve Institute; UCLouvain; Brussels Belgium
| | - H.A. Poirel
- Hematology and Genetics; Belgian Cancer Registry; Brussels Belgium
| |
Collapse
|
12
|
Couronné L, Bachy E, Roulland S, Nadel B, Davi F, Armand M, Canioni D, Michot JM, Visco C, Arcaini L, Besson C, Hermine O. From hepatitis C virus infection to B-cell lymphoma. Ann Oncol 2019; 29:92-100. [PMID: 29045541 DOI: 10.1093/annonc/mdx635] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In addition to liver disorders, hepatitis C virus (HCV) is also associated with extrahepatic immune manifestations and B-cell non-Hodgkin lymphoma (NHL), especially marginal zone lymphoma, de novo or transformed diffuse large B-cell lymphoma and to a lesser extent, follicular lymphoma. Epidemiological data and clinical observations argue for an association between HCV and lymphoproliferative disorders. The causative role of HCV in NHL has been further supported by the response to antiviral therapy. Pathophysiological processes at stake leading from HCV infection to overt lymphoma still need to be further elucidated. Based on reported biological studies, several mechanisms of transformation seem however to emerge. A strong body of evidence supports the hypothesis of an indirect transformation mechanism by which sustained antigenic stimulation leads from oligoclonal to monoclonal expansion and sometimes to frank lymphoma, mostly of marginal zone subtype. By infecting lymphocytes, HCV could play a direct role in cellular transformation, particularly in de novo large B-cell lymphoma. Finally, HCV is associated with follicular lymphoma in a subset of patients. In this setting, it may be hypothesized that inflammatory cytokines stimulate proliferation and transformation of IgH-BCL2 clones that are increased during chronic HCV infection. Unraveling the pathogenesis of HCV-related B-cell lymphoproliferation is of prime importance to optimize therapeutic strategies, especially with the recent development of new direct-acting antiviral drugs.
Collapse
Affiliation(s)
- L Couronné
- Department of Hematology, Assistance Publique-Hôpitaux de Paris (APHP), Necker Hospital, Paris, France.,INSERM UMR 1163, CNRS ERL 8254, Imagine Institute, Paris, France.,Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - E Bachy
- Cancer Research Center of Lyon, INSERM U1052, CNRS UMR 5286, Lyon, France.,Department of Hematology, Lyon Sud Hospital, Lyon, France
| | - S Roulland
- Center of Immunology of Marseille-Luminy, Aix Marseille University, Marseille, France
| | - B Nadel
- Center of Immunology of Marseille-Luminy, Aix Marseille University, Marseille, France
| | - F Davi
- INSERM U1104, Marseille, France.,CNRS UMR 7280, Marseille, France.,Department of Hematology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University, Paris, France
| | - M Armand
- INSERM U1104, Marseille, France.,CNRS UMR 7280, Marseille, France.,Department of Hematology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University, Paris, France
| | - D Canioni
- Department of Pathology, Necker Hospital, AP-HP, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - J M Michot
- Department of Hematology and Drug Development, Gustave Roussy Institute, Villejuif; France
| | - C Visco
- Department of Cell Therapy and Hematology, San Bortolo Hospital, Vicenza, Italy
| | - L Arcaini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy.,Departement of Hematology Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - C Besson
- Department of Hematology and Oncology, Hospital of Versailles, Le Chesnay, France.,University of Versailles Saint Quentin en Yvelines, Paris-Saclay University, Communauté Paris-Saclay, Paris, France.,INSERM U1184, Center for Immunology of Viral Infections and Autoimmune Diseases, Le Kremlin-Bicêtre, France
| | - O Hermine
- Department of Hematology, Assistance Publique-Hôpitaux de Paris (APHP), Necker Hospital, Paris, France.,INSERM UMR 1163, CNRS ERL 8254, Imagine Institute, Paris, France.,Paris Descartes-Sorbonne Paris Cité University, Paris, France
| |
Collapse
|
13
|
Frigeni M, Visco C, Besson C, Rattotti S, Fontaine H, Goldaniga M, Visentini M, Torres H, Peveling-Oberhag J, Rossotti R, Zaja F, Rigacci L, Merli M, Dorival C, Alric L, Piazza F, Gentile M, Ferrari A, Pirisi M, Tedeschi A, Defrancesco I, Ferretti V, Bruno R, Hermine O, Arcaini L. INTERFERON-FREE ANTIVIRAL TREATMENT IN B-CELL LYMPHOPROLIFERATIVE DISORDERS ASSOCIATED WITH CHRONIC HEPATITIS-C VIRUS INFECTION. Hematol Oncol 2017. [DOI: 10.1002/hon.2437_135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- M. Frigeni
- Department of Molecular Medicine; University of Pavia; Pavia Italy
| | - C. Visco
- Department of Cell Therapy and Hematology; San Bortolo Hospital; Vicenza Italy
| | - C. Besson
- Université Paris Sud, INSERM; Assistance Publique-Hôpitaux de Paris Centre Hospitalier Universitaire Bicêtre; Le Kremlin-Bicêtre France
| | - S. Rattotti
- Department of Hematology Oncology; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo; Pavia Italy
| | - H. Fontaine
- Paris 5 Descartes University; INSERM U1213 and Unité Mixte de Service 20; Institut Pasteur, Department of Hepatology, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris; Paris France
| | - M. Goldaniga
- Department of Hematology, Fondazione Ospedale Maggiore Policlinico; Mangiagalli e Regina Elena; Milan Italy
| | - M. Visentini
- Division of Clinical Immunology; Sapienza University of Rome, Fondazione Roma; Rome Italy
| | - H.A. Torres
- Department of Infectious Diseases, Infection Control, and Employee Health; The University of Texas MD Anderson Cancer Center; Houston Texas USA
| | - J. Peveling-Oberhag
- Department of Internal Medicine 1; Goethe-University Hospital; Frankfurt Germany
| | - R. Rossotti
- Department of Infectious Diseases; Ospedale Niguarda Ca’ Granda; Milan Italy
| | - F. Zaja
- Hematology Unit, Centro Trapianti e Terapie Cellulari Carlo Melzi, DISM, Azienda Sanitaria Universitaria Integrata; Udine Italy
| | - L. Rigacci
- Department of Hematology; Azienda Ospedaliero-Universitaria Careggi; Florence Italy
| | - M. Merli
- Division of Hematology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - C. Dorival
- Sorbonne Universités, Pierre and Marie Curie University (University of Paris 06), INSERM; Institut Pierre Louis d'épidémiologie et de Santé Publique (Unité mixte de recherche S1136); Paris France
| | - L. Alric
- Toulouse 3 University, Unité mixte de recherche 152 Institut de Recherche pour le Développement; Department of Internal Medicine and Digestive Diseases, Hôpital Purpan; Toulouse France
| | - F. Piazza
- Hematology and Clinical Immunology Unit, Department of Medicine; University of Padua; Padua Italy
| | - M. Gentile
- Hematology Unit; Azienda Ospedaliera di Cosenza; Cosenza Italy
| | - A. Ferrari
- Hematology Unit, Istituto di Ricovero e Cura a Carattere Scientifico; Reggio Emilia Italy
| | - M. Pirisi
- Department of Translational Medicine; Università degli Studi del Piemonte Orientale "A. Avogadro"; Novara Italy
| | - A. Tedeschi
- Department of Hematology, Niguarda Cancer Center, Ospedale Niguarda Ca’ Granda; Milan Italy
| | - I. Defrancesco
- Department of Molecular Medicine; University of Pavia; Pavia Italy
| | - V.V. Ferretti
- Department of Molecular Medicine; University of Pavia; Pavia Italy
| | - R. Bruno
- Division of Infectious and Tropical Diseases, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo; Pavia Italy
| | - O. Hermine
- Paris 5 Descartes University; AP-HP, Department of Adult Hematology and Imagine Institute, Hôpital Necker; Paris France
| | - L. Arcaini
- Department of Hematology Oncology; Fondazione Istituto di Ricovero e Cura a Carattere Scientifico Policlinico San Matteo; Pavia Italy
| |
Collapse
|
14
|
Tchernonog E, Faurie P, Coppo P, Monjanel H, Bonnet A, Algarte Génin M, Mercier M, Dupuis J, Bijou F, Herbaux C, Delmer A, Fabiani B, Besson C, Le Gouill S, Gyan E, Laurent C, Ghesquieres H, Cartron G. Clinical characteristics and prognostic factors of plasmablastic lymphoma patients: analysis of 135 patients from the LYSA group. Ann Oncol 2017; 28:843-848. [PMID: 28031174 DOI: 10.1093/annonc/mdw684] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [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: 07/15/2016] [Indexed: 11/14/2022] Open
Abstract
Background Plasmablastic lymphoma (PBL), initially described in 1997 in the oral cavity of HIV positive patients, is now recognized as a distinct aggressive and rare entity of diffuse large B-cells lymphoma by the World Health Organization (WHO) classification. Since the original description, others cases have been reported. However, these are largely derived from case reports or small series limiting any definitive conclusions on clinical characteristics and outcome. Patients and methods The clinical, biological, pathological features and outcome of a cohort including 135 patients with PBL, from LYSA centers in France and Belgium, were reported and analyzed. Results The median age was 58 years, with a male predominance. The cohort was divided into 56 HIV-positive patients, 17 post-transplant patients and 62 HIV-negative/non-transplanted patients. Within HIV-negative/non-transplanted, a relative immunosuppression was found in most cases (systemic inflammatory disease, history of cancer, increased age associated with weakened immune system). We have also described a new subtype, PBL arising in a chronic localized inflammatory site, without any sign of immunosuppression. At presentation, 19% of patients showed oral involvement. Immunophenotype showed CD138 positivity in 88% of cases and CD20 negativity in 90% of cases. Chemotherapy was administered to 80% of patients, with a complete response (CR) rate of 55%. The median overall survival (OS) was 32 months. In univariate analysis, HIV positive status showed better OS when compared with HIV negative status. In multivariate analysis, International Prognostic Index score, chemotherapy and CR were associated with survival benefit. Conclusion(s) This cohort, the largest reported to date, increases the spectrum of knowledge on PBL, rarely described. However, specific guidelines to clarify treatment are lacking, and may improve the poor prognosis of this rare disease.
Collapse
Affiliation(s)
- E Tchernonog
- Department of Hematology, University Hospital of Montpellier, Montpellier, France
| | - P Faurie
- Department of Hematology, Léon Bérard Center, Lyon, France
| | - P Coppo
- Department of Hematology, Saint Antoine University Hospital, Paris, France
| | - H Monjanel
- Department of Hematology, University Hospital of Tours, Tours, France
| | - A Bonnet
- Department of Hematology, University Hospital of Nantes, Nantes, France
| | - M Algarte Génin
- Institute Pierre Louis of Epidemiology and Public Health, Paris, France
| | - M Mercier
- Department of Hematology, University Hospital of Angers, Angers, France
| | - J Dupuis
- Lymphoid Malignancies Unit University Hospital Henri Mondor, Créteil, France
| | - F Bijou
- Institute Bergonie, Bordeaux, France
| | - C Herbaux
- Department of Hematology, University Hospital of Lille, Lille, France
| | - A Delmer
- Department of Hematology, University Hospital of Reims, Reims, France
| | - B Fabiani
- Department of Biopathology, University Hospital Saint Antoine, Paris, France
| | - C Besson
- Department of Hematology, University Hospital Kremlin Bicêtre, Paris, France
| | - S Le Gouill
- Department of Hematology, University Hospital of Nantes, Nantes, France
| | - E Gyan
- Department of Hematology, University Hospital of Tours, Tours, France
| | - C Laurent
- Department of Biopathology, University Hospital of Toulouse, Toulouse, France
| | - H Ghesquieres
- Department of Hematology, University Hospital of Lyon Sud, Lyon, France, France
| | - G Cartron
- Department of Hematology, University Hospital of Montpellier, Montpellier, France
| |
Collapse
|
15
|
Besson C, Waissi W, Velten M, Nguyen Them L, Schott R, Prebay D, Etienne-Selloum N. Retrospective analysis of bevacizumab use in combination with irinotecan for recurrent glioblastoma: a single-institution experience. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30237-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: 10/20/2022]
|
16
|
Sueur C, Lupo J, Germi R, Magnat N, Prevost S, Boyer V, Costagliola D, Besson C, Morand P. Characterization of Epstein–Barr Virus LMP1 deletion variants by Next-Generation Sequencing in HIV-associated Hodgkin Lymphoma (French ANRS CO16 LYMPHOVIR cohort). J Clin Virol 2016. [DOI: 10.1016/j.jcv.2016.08.178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
17
|
Saubade M, Norrenberg S, Besson C, Thornton J, Amati F. [A pill to replace physical activity?]. Rev Med Suisse 2015; 11:1421-1425. [PMID: 26398970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A recent study has identified two molecules able to transform white adipose tissue ("bad fat", responsible for excess weight) in brown adipose tissue ("good fat", consuming energy), bringing new hope for the treatment of obesity and diabetes. But the authors' announcement (more humorous than scientific) declaring that the study is thefirst step toward a pill that can replace the treadmill is inappropriate. It underscores the importance of employing preventive methods such as physical activity, whose benefits on health are well documented and which represents the best medicine available. Different means and tools are described in this article in order to improve the amount and quality of physical activity prescription in primary care.
Collapse
|
18
|
Frielinghaus R, Besson C, Houben L, Saelhoff AK, Schneider CM, Meyer C. Controlled covalent binding of antiferromagnetic tetramanganese complexes to carbon nanotubes. RSC Adv 2015. [DOI: 10.1039/c5ra14983e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tetramanganese complexes are covalently attached to carbon nanotubes such, that the magnetic properties of the antiferromagnetic molecules are preserved.
Collapse
Affiliation(s)
- R. Frielinghaus
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
| | - C. Besson
- Institute of Inorganic Chemistry
- RWTH Aachen University
- JARA-Fundamentals of Future Information Technologies
- Aachen
- Germany
| | - L. Houben
- Peter Grünberg Institute (PGI-5) and Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons
- Forschungszentrum Jülich
- 52425 Jülich
- Germany
| | - A.-K. Saelhoff
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
| | - C. M. Schneider
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
| | - C. Meyer
- Peter Grünberg Institute (PGI-6)
- Forschungszentrum Jülich
- JARA-Fundamentals of Future Information Technologies
- 52425 Jülich
- Germany
| |
Collapse
|
19
|
Jeannel J, Bonnet D, Cacoub P, Pol S, Canioni D, Leblond V, Carrat F, Davi F, Hermine O, Besson C, Alric L. Évaluation de l’efficacité virologique et de la tolérance du traitement antiviral chez les patients porteurs d’une hépatite C chronique, associée à un lymphome B non hodgkinien : étude cas-témoins ANRS HC13 lympho-C. Rev Med Interne 2014. [DOI: 10.1016/j.revmed.2014.10.214] [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: 10/24/2022]
|
20
|
Lepeule R, Leflon-Guibout V, Vanjak D, Zahar JR, Lafaurie M, Besson C, Lefort A. Clinical spectrum of urine cultures positive for ESBL-producing Escherichia coli in hospitalized patients and impact on antibiotic use. Med Mal Infect 2014; 44:530-4. [PMID: 25311839 DOI: 10.1016/j.medmal.2014.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 06/22/2014] [Revised: 08/04/2014] [Accepted: 09/10/2014] [Indexed: 11/17/2022]
Abstract
OBJECTIVE We wanted to describe the clinical features associated with urinalysis positive for ESBL-producing Escherichia coli and their impact on antibiotic use. METHODS We performed a prospective observational study in 13 French hospitals of the Paris area for 3 consecutive months. We included all patients with urine cultures positive for ESBL-producing E. coli. RESULTS One hundred and seventeen of the 218 patients (54%) presented with asymptomatic bacteriuria, 31 (14%) with cystitis, and 70 (32%) with a parenchymal infection. Nineteen patients with asymptomatic bacteriuria (16%) received antibiotics. Forty-one with parenchymal infections (59%) received a carbapenem. A carbapenem alternative could have been used in every patient treated with a carbapenem, according to antibiotic susceptibility testing results. CONCLUSIONS Urinary tract infections accounted for 46% of E. coli ESBL positive urinalysis. Fifty percent of parenchymal infections were treated with a carbapenem.
Collapse
Affiliation(s)
- R Lepeule
- Unité transversale de traitement des infections, département de virologie, bactériologie-hygiène, parasitologie-mycologie, hôpital Henri-Mondor, AP-HP, 94010 Créteil, France.
| | - V Leflon-Guibout
- Service de microbiologie, hôpital Beaujon, hôpitaux universitaires Paris Nord Val-de-Seine, AP-HP, Clichy, France
| | - D Vanjak
- Unité de contrôle des infections, institut Curie, Paris, France
| | - J-R Zahar
- Unité de prévention et de lutte contre les infections nosocomiales, CHU d'Angers - Université d'Angers, Angers, France
| | - M Lafaurie
- Unité d'intervention en infectiologie, hôpital Saint-Louis, AP-HP, Paris, France
| | - C Besson
- Service de microbiologie clinique, hôpital Européen Georges-Pompidou, AP-HP, Paris, France
| | - A Lefort
- Service de médecine interne, hôpital Beaujon, hôpitaux universitaires Paris Nord Val-de-Seine, AP-HP, Clichy, France; IAME, UMR1137, université Paris-Diderot, Sorbonne Paris Cité, Paris, France; EA3964, faculté de médecine Xavier-Bichat, université Paris-Diderot, Paris, France
| | | |
Collapse
|
21
|
Pedergnana V, Syx L, Cobat A, Guergnon J, Brice P, Ferme C, Carde P, Hermine O, Le Pendeven C, Amiel C, Theodorou I, Abel L, Besson C. Combined Linkage and Association Studies of Antibodies against EBV Antigens Confirm the Role of HLA Class II Variants in the Control of Anti-EBNA1 IgG Levels and in the Risk of Hodgkin's Lymphoma. Klin Padiatr 2014. [DOI: 10.1055/s-0034-1371107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
22
|
Besson C, Boudjemaa S, Hamdi L, Creidy R, Leblanc T, Lambilliote A, Dainese L, Doukoure B, Krziesek R, Coulomb A, Landman-Parker J. Hodgkin Lymphoma Subtypes and Peripheral B-cell Lymphopenia are Associated with EBV Status in Children and Adolescents in France: A Preliminary Report of the EuroNet LH EPI Project. Klin Padiatr 2014. [DOI: 10.1055/s-0034-1371106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
23
|
Martin R, Gard S, Besson C, Ménétrey J. [Return to sport after anterior cruciate ligament reconstruction]. Rev Med Suisse 2013; 9:1426-1431. [PMID: 23971328] [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: 06/02/2023]
Abstract
Despite continuous advances in techniques for anterior cruciate ligament reconstruction (ACLR), return to play (RTP) after surgery remains a challenge. More than one-third of the patients are unable to return to their preinjury sport level, for most because of a fear to sustain another injury. And when a RTP is attempted, up to 20% will tear their graft and a similar % will sustain an ACL tear on the opposite side. We believe that these failures result from an incomplete recovery. Based on a literature review and on our experience, we suggest 6 objective criteria to allow a safer RTP. They rely on laxity, strength, neuromuscular function, and psychological evaluations. Rehabilitation after ACLR should focus on the deficits identified by these tests and on they specific needs of the sport that the athlete plans to return to.
Collapse
Affiliation(s)
- R Martin
- Swiss olympic medical center, Unité d'orthopédie et traumatologie du sport, Service de chirurgie orthopédique et traumatologie de l'apparell moteur, HUG, Faculté de médecine et Université de Genève, Genève.
| | | | | | | |
Collapse
|
24
|
Seemann KM, Bauer A, Kindervater J, Meyer M, Besson C, Luysberg M, Durkin P, Pyckhout-Hintzen W, Budisa N, Georgii R, Schneider CM, Kögerler P. Polyoxometalate-stabilized, water dispersible Fe₂Pt magnetic nanoparticles. Nanoscale 2013; 5:2511-2519. [PMID: 23412503 DOI: 10.1039/c3nr33374d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Magnetic Fe2Pt core-shell nanoparticles with 2 nm cores were synthesized with a monolayer coating of silicotungstate Keggin clusters. The core-shell composition is substantiated by structural analysis performed using high-resolution scanning transmission electron microscopy (HR-STEM) and small angle X-ray scattering (SAXS) in a liquid suspension. The molecular metal oxide cluster shell introduces an enhanced dispersibility of the magnetic Fe-Pt core-shell nanoparticles in aqueous media and thereby opens up new routes to nanoparticle bio-functionalization, for example, using pre-functionalized polyoxometalates.
Collapse
Affiliation(s)
- K M Seemann
- Physik Department E21, Technische Universität München, D-85748 Garching, Germany.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Michot JM, Canioni D, Settegrana C, Driss H, Alric L, Suarez F, Cacoub P, Roulland S, Guyen Khac F, Davi F, Hermine O, Besson C. Évolution des lymphomes B non-hodgkiniens associés au virus de l’hépatite C en France, données cliniques de l’étude ANRS HC-13 Lympho-C. Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.10.307] [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: 10/15/2022]
|
26
|
Rannou S, Guirimand N, Cartron L, Tresvaux du Fraval F, Sahbatou Y, Lagrange JL, Benoît G, Leplège A, Besson C. Le vécu de l’annonce d’un cancer à l’ère du dispositif d’annonce. PSYCHO-ONCOLOGIE 2011. [DOI: 10.1007/s11839-011-0330-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
27
|
Vuillaumier-Barrot S, Bouchet-Seraphin C, Chelbi M, Eude-Caye A, Charluteau E, Besson C, Quentin S, Devisme L, Le Bizec C, Landrieu P, Goldenberg A, Maincent K, Loget P, Boute O, Gilbert-Dussardier B, Encha-Razavi F, Gonzales M, Grandchamp B, Seta N. Intragenic rearrangements in LARGE and POMGNT1 genes in severe dystroglycanopathies. Neuromuscul Disord 2011; 21:782-90. [PMID: 21727005 DOI: 10.1016/j.nmd.2011.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 05/30/2011] [Accepted: 06/06/2011] [Indexed: 11/29/2022]
Abstract
Dystroglycanopathies are a heterogeneous group of muscular dystrophies with autosomal recessive inheritance characterized by abnormal glycosylation of alpha-dystroglycan. The most severe phenotypes are Walker-Warburg Syndrome (WWS) and muscle-eye-brain disease (MEB) presenting with lissencephaly type II (LIS II) and in which muscular dystrophy is associated with mental retardation and eye abnormalities. To date, six distinct genes, POMT1, POMT2, POMGNT1, FKTN, FKRP, LARGE and recently in one case DPM3, have been shown to be involved in dystroglycanopathies. Genomic sequencing alone is still frequently used for diagnosis purpose, not allowing detection of intragenic rearrangements at the heterozygous state contrarily to RNA analysis, quantitative PCR and CGH array analysis. These latter methods enabled us to identify four new intragenic rearrangements in the LARGE gene in three fetuses with WWS, born to two unrelated families: deletion of exons 9-10 and duplication of introns 1-4 for the first family and deletion of exons 4 and 7 for the second one; and a deletion of the last six exons of the POMGNT1 gene in two unrelated MEB patients. Genomic dosage studies using emerging tools such as CGH array should be included in routine molecular analysis of dystroglycanopathies, not only for the screening of the LARGE gene in which this kind of mutation seems to be more frequent than point mutations, but also for the other involved genes, especially in severe clinical cases.
Collapse
Affiliation(s)
- S Vuillaumier-Barrot
- APHP, Hôpital Bichat-Claude Bernard, Biochimie, 46 rue Henri Huchard, Paris Cedex 18, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Terrier B, Cacoub P, Costagliola D, Chavez H, Canioni D, Escaut L, Letranchant L, Morineau-Le Houssine P, Simon A, Taoufik Y, Raphael M, Besson C. Prévalence élevée des lymphomes de la zone marginale chez les patients co-infectés VIH-VHC à l’ère de la trithérapie anti-virale : cohorte ANRS CO16 Lymphovir. Rev Med Interne 2010. [DOI: 10.1016/j.revmed.2010.10.126] [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: 10/18/2022]
|
29
|
Sordet C, Blanchard L, Besson C, Christin L, Valle G, Risuleo M, Regard CS. [Hospital infection control--beyond the hospital]. Rev Med Suisse 2007; 3:2590-2592. [PMID: 18078188] [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: 05/25/2023]
Abstract
Health care related infections are expensive untoward events, not only in terms of morbidity and mortality, but also cost. Prevention is essential, as well as limiting dissemination. Specify measures refer usually to hospital hygiene. However, health care tend to be provided more and more outside of the acute care hospital, with increasing complexity and thus risk for health care related infections. This risk varies according to patient's characteristics as well as environmental parameters. Consequently, it is essential to adapt preventive measures to situations such as home health care or nursing homes. We describe a model of regional organization for infection control in various health care settings.
Collapse
Affiliation(s)
- C Sordet
- Cellule HPCI de l'Association des réseaux de soins de la Côte, Rolle.
| | | | | | | | | | | | | |
Collapse
|
30
|
Batifoulier F, Verny MA, Besson C, Chanliaud E, Rémésy C, Demigné C. Restoration of thiamine status with white or whole wheat bread in a thiamine-depleted rat model. INT J VITAM NUTR RES 2007; 77:46-56. [PMID: 17685095 DOI: 10.1024/0300-9831.77.1.46] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Long-term thiamine deficiency has been largely documented, whilst little is known about effects of short-term depletion/repletion periods on thiamine vitamers status. Rats were submitted to short-term depletion (8 days) followed by different durations of repletion (3 or 14 days) with thiamine from bread (whole wheat bread or white bread, whole B and white B respectively) or corresponding controls. Short-term depletion drastically decreased plasma thiamine (-97%) and its urinary excretion (-77%). TDP (thiamine diphosphate) was strongly affected in liver (-67%) but less affected in cerebellum (-38%) or kidneys (-45%). Short-term repletion (3 days) with whole B diet or its control restored TDP at initial values in cerebellum and kidneys. A longer repletion (14 days) was required to restore liver TDP. Comparison of the diet groups indicates that thiamine status in tissues of rat fed whole B or white B diet was comparable to that of rats fed purified thiamine. Plasma thiamine concentration could not be restored at initial values in the bread groups or respective controls. In conclusion, thiamine in whole wheat bread appears effective in preventing marginal deficiencies and plasma thiamine is a less reliable indicator of thiamine status than tissue TDP levels.
Collapse
Affiliation(s)
- F Batifoulier
- UNH/UMR 1019, INRA site de Theix, 63122 Saint-Genès Champanelle, France
| | | | | | | | | | | |
Collapse
|
31
|
Sorriaux G, Besson C, Averous C. [Fibular tendon dislocations associated with calcaneal fractures: four case reports]. Rev Chir Orthop Reparatrice Appar Mot 2005; 91:676-81. [PMID: 16327674 DOI: 10.1016/s0035-1040(05)84473-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
We report four cases of traumatic dislocation of the fibular tendons associated with calcaneal fractures. There are few reports of this type of association in the literature. We analyzed the diagnostic and therapeutic features. Two patients with a history of calcaneal fracture presented old, unrecognized, symptomatic dislocations of the fibular tendons. After CT confirmation, the tendons were repositioned surgically. During the last two years, CT scans performed systematically in patients with calcaneal fracture led to the discovery of two recent dislocations associated with calcaneal fractures. In these patients the fibular tendon dislocation was treated during the osteosynthesis procedure by relocating the tendon in the gutter and reinsertion of the retinaculum. The two older cases illustrated the serious functional consequences of neglecting displaced fibular tendons. We also detailed the characteristic CT signs observed with the two recent cases. The association of calcaneal fracture with fibular tendon displacement is rarely reported in the literature, but is not exceptional. Physical examination is limited during the acute phase. Imaging, particularly CT is required to demonstrate the tendon displacement. The objective results of surgical treatment were good. Orthopedic treatment is almost always unsuccessful. The association of fibular tendon displacement with calcaneal fracture is not exceptional. We have instituted a standardized CT protocol for all cases of calcaneal fracture in order to recognize disinsertion of the retinaculum and enable treatment at the same time as the osteosynthesis.
Collapse
Affiliation(s)
- G Sorriaux
- Service de Chirurgie Orthopédique et Traumatologique, Hôpital Raymond-Poincaré, 104, boulevard Raymond-Poincaré, 92380 Garches
| | | | | |
Collapse
|
32
|
Silberberg M, Morand C, Mathevon T, Besson C, Manach C, Scalbert A, Remesy C. The bioavailability of polyphenols is highly governed by the capacity of the intestine and of the liver to secrete conjugated metabolites. Eur J Nutr 2005; 45:88-96. [PMID: 15981077 DOI: 10.1007/s00394-005-0568-5] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2005] [Accepted: 05/06/2005] [Indexed: 11/29/2022]
Abstract
BACKGROUND After ingestion of a complex meal containing foods and beverages of plant origin, different polyphenols are likely to be simultaneously present in the intestine. However, almost nothing is known about their interactions and possible consequences on their bioavailability. AIM OF THE STUDY The present study deals with the intestinal absorption and splanchnic metabolism of three polyphenols, genistein, hesperetin and ferulic acid (FA),when perfused in the small intestine alone or in combination, at different doses (15 and 120 microM). METHODS The fate of polyphenols in the small intestine was studied using a rat in situ intestinal perfusion model. Polyphenols were analysed in perfusate, bile and plasma by HPLC. RESULTS Whatever the perfused dose, the efficiency of the net transfer towards the enterocyte was similar for the three polyphenols and not significantly modified by any association between these molecules. However, FA largely differed from the two flavonoids by its low intestinal secretion of conjugates. When perfused at 15 microM, the secretion of conjugates back to the lumen represented 6.2% of the net transfer into the enterocytes for FA compared to 25.5 and 20 % for genistein and hesperetin respectively. Intestinal conjugation and secretion of conjugates back to the gut lumen varied with the dose of flavonoids: saturation of conjugation was observed for the highest dose or when a high dose of a second flavonoid was perfused simultaneously. Intensity of the biliary secretion substantially differed among tested polyphenols: 7.7% of the net transfer for FA vs 50% for genistein or hesperetin. The extent of the enterohepatic cycling of these polyphenols was proportional to the perfused dose and unaffected by the simultaneous presence of different compounds in the intestine. CONCLUSION Genistein and hesperetin appeared less available than FA for peripheral tissues because of a high intestinal and biliary secretion of their conjugates. Moreover, data suggest that a high polyphenol intake may improve their bioavailability due to saturation of the intestinal secretion of conjugates.
Collapse
Affiliation(s)
- M Silberberg
- Laboratoire des Maladies Métaboliques et des Micronutriments, I. N. R. A. Centre de Recherche de Clermont-Ferrand/Theix, 63122, Saint Genés-Champanelle, France
| | | | | | | | | | | | | |
Collapse
|
33
|
Batifoulier F, Verny MA, Besson C, Demigné C, Rémésy C. Determination of thiamine and its phosphate esters in rat tissues analyzed as thiochromes on a RP-amide C16 column. J Chromatogr B Analyt Technol Biomed Life Sci 2005; 816:67-72. [PMID: 15664335 DOI: 10.1016/j.jchromb.2004.11.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2004] [Accepted: 11/04/2004] [Indexed: 10/26/2022]
Abstract
A new reversed-phase chromatographic method is described for the separation and quantification of thiamine (T), thiamine monophosphate (TMP) and diphosphate (TDP) in rat tissues. Sample extraction with perchloric acid (HClO(4)) was found more suitable than extraction with trichloroacetic acid (TCA), as regards convenience and background fluorescence. Derivatization of thiamine vitamers to thiochromes was optimized and complete separation of TDP and TMP thiochromes was obtained on a RP-amide C16 column in isocratic elution, with T thiochrome eluting in less than 10 min. The precision and the accuracy of the HPLC procedure were assessed: ranging from 0.5 to 7.7% for intra-day and from 2.0 to 9.4% for inter-day precision, a recovery average of 101% was determined (range 90-111%). Mean values of recovery for TDP, TMP or T were 91, 96 and 90% for liver extracts, respectively. Analysis of vitamers in tissues of rat submitted to 8 days thiamin deficiency, followed by a 14 days repletion, showed a significant reduction of TPP after 8 days of depletion in liver (-67%), brains (-50%), kidneys (-60%), followed by a complete recovery upon repletion.
Collapse
Affiliation(s)
- F Batifoulier
- Unit of Metabolic Disease and Micronutrients, INRA Clermont Ferrand, Theix, 63122 Saint Genès Champannelle, France
| | | | | | | | | |
Collapse
|
34
|
Abstract
Phloretin is a flavonoid found exclusively in apples and in apple-derived products where it is present as the glucosidic form, namely, phloridzin (phloretin 2'-O-glucose). In the present study, we compared the changes in plasma and urine concentrations of these two compounds in rats fed a single meal containing 0.25% phloridzin or 0.157% phloretin (corresponding to the ingestion of 22 mg of phloretin equivalents). In plasma, phloretin was recovered mainly as the conjugated forms (glucuronided and/or sulfated) but some unconjugated phloretin was also detected. By contrast, no trace of intact phloridzin was detected in plasma of rats fed a phloridzin meal. These compounds presented different kinetics of absorption; phloretin appeared more rapidly in plasma when rats were fed the aglycone than when fed the glucoside. However, whatever compound was administered, no significant difference in the plasma concentrations of total phloretin were observed 10 h after food intake. At 24 h after the beginning of the meal, the plasma concentrations of phloretin were almost back to the baseline, indicating that this compound was excreted rapidly in urine. The total urinary excretion rate of phloretin was not affected by the forms administered, and was estimated to be 8.5 micromol/24 h in rats fed phloretin or phloridzin. Thus, 10.4% of the ingested dose was recovered in urine after 24 h.
Collapse
Affiliation(s)
- V Crespy
- Laboratoire des Maladies Métaboliques et des Micronutriments, I.N.R.A. de Clermont-Ferrand/Theix, 63122 Saint Genès Champanelle, France.
| | | | | | | | | | | | | |
Collapse
|
35
|
Besson C, Goubar A, Gabarre J, Rozenbaum W, Pialoux G, Châtelet FP, Katlama C, Charlotte F, Dupont B, Brousse N, Huerre M, Mikol J, Camparo P, Mokhtari K, Tulliez M, Salmon-Céron D, Boué F, Costagliola D, Raphaël M. Changes in AIDS-related lymphoma since the era of highly active antiretroviral therapy. Blood 2001; 98:2339-44. [PMID: 11588028 DOI: 10.1182/blood.v98.8.2339] [Citation(s) in RCA: 290] [Impact Index Per Article: 12.6] [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: 12/12/2022] Open
Abstract
HIV infection is associated with a high incidence of AIDS-related lymphomas (ARLs). Since the use of highly active antiretroviral therapy (HAART), the incidence of AIDS-defining illnesses has decreased, leading to a significant improvement in survival of HIV-infected patients. The consequences of HAART use on ARL are under debate. This study compared the incidence and the characteristics of ARL before and after the use of HAART in a large population of HIV-infected patients in the French Hospital Database on HIV (FHDH) and particularly in 3 centers including 145 patients with proven lymphoma. Within the FHDH, the incidence of systemic ARL has decreased between 1993-1994 and 1997-1998, from 86.0 per 10 000 to 42.9 per 10 000 person-years (P < 10(-30)). The incidence of primary brain lymphoma has also fallen dramatically between the periods, from 27.8 per 10 000 to 9.7 per 10 000 person-years (P < 10(-11)). The analysis of 145 cases of ARL in 3 hospitals showed that known HIV history was longer in the second period than in the first period among patients with systemic ARL (98 versus 75 months; P <.01). Patients had a higher number of CD4 cells at diagnosis during the second period (191 versus 63/microL, P = 10(-3)). Survival of patients with systemic ARL also increased between the periods (from 6 to 20 months; P =.004). Therefore, the profile of ARL has changed since the era of HAART, with a lower incidence of systemic and brain ARL. The prognosis of systemic ARL has improved.
Collapse
Affiliation(s)
- C Besson
- Hôpital Necker, SC4-INSERM, CHU Pitié Salpêtrière, Hôpital Rothschild, Paris, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Crespy V, Morand C, Besson C, Manach C, Démigné C, Rémésy C. Comparison of the intestinal absorption of quercetin, phloretin and their glucosides in rats. J Nutr 2001; 131:2109-14. [PMID: 11481403 DOI: 10.1093/jn/131.8.2109] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Absorption and metabolism of quercetin and isoquercitrin (quercetin 3-O-glucose) were investigated in rats after in situ perfusion of jejunum plus ileum (15 nmol/min) for 30 min and compared with those of phloretin and phloridzin (phloretin 2'-O-glucose). After perfusion of the glucosides, the corresponding aglycone forms and conjugated derivatives appeared in the lumen. The conjugated metabolites were similar to those recovered after intestinal perfusion of the aglycone forms. Regardless of the aglycone or glucoside perfused, only conjugated forms were present in the mesenteric vein blood draining the perfused segment showing the importance of intestinal conjugation. The hydrolysis of glucosides was a prerequisite step before their conjugation by intestinal enzymes and their transport towards the mucosal and serosal sides. In contrast to phloridzin, lactase phloridzin hydrolase activity did not seem to be an essential pathway for isoquercitrin hydrolysis. The 3-O-glucosylation of quercetin improved the net absorption of the aglycone (P < 0.05), whereas phloretin absorption decreased when present as 2'-O-glucoside (P < 0.05). Whatever the perfused compound, the efficiency of the absorption seemed to be linked to the intestinal conjugation process and to the luminal secretion of metabolites.
Collapse
Affiliation(s)
- V Crespy
- Laboratoire des Maladies Métaboliques et des Micronutriments, Institut National de la Recherche Agronomique, de Clermont-Ferrand/Theix, 63122 Saint Genès Champanelle, France.
| | | | | | | | | | | |
Collapse
|
37
|
Abstract
Flavan-3-ols are the most abundant flavonoids in the human diet, but little is known about their absorption and metabolism. In this study, the absorption and metabolism of the monomeric flavan-3-ol, catechin, was investigated after the in situ perfusion of the jejunum + ileum in rats. Five concentrations of catechin were studied, ranging from 1 to 100 micromol/L. The absorption of catechin was directly proportional to the concentration, and 35 +/- 2% of the perfused catechin was absorbed during the 30-min period. Effluent samples contained only native catechin, indicating that intestinal excretion of metabolites is not a mechanism of catechin elimination. Catechin was absorbed into intestinal cells and metabolized extensively because no native catechin could be detected in plasma from the mesenteric vein. Mesenteric plasma contained glucuronide conjugates of catechin and 3'-O-methyl catechin (3'OMC), indicating the intestinal origin of these conjugates. Additional methylation and sulfation occurred in the liver, and glucuronide + sulfate conjugates of 3'OMC were excreted extensively in bile. Circulating forms were mainly glucuronide conjugates of catechin and 3'OMC. The data further demonstrate the role of the rat small intestine in the glucuronidation and methylation of flavonoids as well as the role of the liver in sulfation, methylation and biliary excretion.
Collapse
Affiliation(s)
- J L Donovan
- Laboratoire des Maladies Métaboliques et Micronutriments, INRA, 63122 Saint-Genès Champanelle, France
| | | | | | | | | | | | | |
Collapse
|
38
|
Arlet J, Perivier S, Besson C, Hermine O, Varet B. Déficit en transcobalamine II : une cause rare d'anémie macrocytaire. Rev Med Interne 2001. [DOI: 10.1016/s0248-8663(01)83532-3] [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: 11/29/2022]
|
39
|
Besson C, Gonin C, Brebion A, Delaunay C, Panelatti G, Plumelle Y. Incidence of hematological malignancies in Martinique, French West Indies, overrepresentation of multiple myeloma and adult T cell leukemia/lymphoma. Leukemia 2001; 15:828-31. [PMID: 11368445 DOI: 10.1038/sj.leu.2402040] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [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: 11/09/2022]
Abstract
A registry of hematological malignancies is held in the unit of cytology of the University Hospital of Martinique. Human T cell lymphotropic virus type-1 (HTLV1) is endemic in this island. We determined the incidence and epidemiological features of hematological malignancies from the 715 new cases diagnosed between 1990 and 1998 among the adult population. Incidence rates per year were steady during this period. The most frequent hematological malignancies were multiple myeloma (MM) (34%), followed by non-Hodgkin's lymphoma (NHL) (23%). Among the cases of NHL with an immunohistological study, 57% had a T cell phenotype. Among these 61% were adult T cell leukemia/lymphoma. Epidemiological data on hematological malignancies in the West Indies has not been previously reported. There are two striking differences with other population-based registries: a high incidence of MM (5/100000) and a high proportion of T cell NHL among NHL (57%). The high proportion of T cell NHL is probably due to the high incidence of ATL. A low incidence of B cell NHL might also contribute to this effect. The increased incidence of MM in West Indies had not been previously reported. A similar high incidence of MM has been reported among Afro-Americans in the USA.
Collapse
Affiliation(s)
- C Besson
- Internal Medicine Unit, University Hospital, Forte de France, Martinique, France
| | | | | | | | | | | |
Collapse
|
40
|
Lopez HW, Levrat-Verny MA, Coudray C, Besson C, Krespine V, Messager A, Demigné C, Rémésy C. Class 2 resistant starches lower plasma and liver lipids and improve mineral retention in rats. J Nutr 2001; 131:1283-9. [PMID: 11285339 DOI: 10.1093/jn/131.4.1283] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.6] [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: 11/14/2022] Open
Abstract
The effects of raw potato starch (RPS) and high amylose corn starch (HAS) on cecal digestion, lipid metabolism and mineral utilization (Ca and Mg) were compared in rats adapted to semipurified diets. The diets provided either 710 g wheat starch/100 g diet (control) alone or 510 g wheat starch/100 g diet plus 200 g resistant starch/100 g (RPS or HAS). Compared with rats fed the control diet, significant cecal hypertrophy (240% after 7 d of the fiber consumption) and short-chain fatty acids accumulation (especially propionic and butyric acids) occurred after both resistant starch diets. Apparent Ca, Mg, Zn, Fe and Cu absorptions were similarly enhanced by RPS and HAS (50, 50, 27, 21 and 90%, respectively). Cholesterol absorption was reduced to 14% of intake in rats fed RPS or HAS compared with 47% absorption in control rats. RPS and HAS were also effective in lowering plasma cholesterol (-31 and -27%, respectively) and triglycerides (-28 and -22%, respectively). There was no effect of the diets on cholesterol in d > 1.040 kg/L lipoproteins (HDL), whereas RPS and HAS depressed cholesterol in d < 1.040 kg/L lipoproteins (especially in triglyceride-rich lipoproteins). Moreover, there were lower concentrations of cholesterol (-50 and -40%, respectively) and triglycerides (-53 and -47%, respectively) in the livers of RPS- and HAS-fed rats. Thus, RPS and HAS have similar effects on intestinal fermentation, mineral utilization and cholesterol metabolism in rats.
Collapse
Affiliation(s)
- H W Lopez
- Unité de Laboratoire pour l'Innovation dans les Céréales, ZAC Les Portes de Riom, BP 173, F-63204 Riom, France.
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Besson C, Plumelle Y, Arnulf B, Gonin C, Panelatti G, Bazarbachi A, Hermine O. [Adult T-cell leukemia/lymphoma. Clinical aspects]. Presse Med 2001; 30:239-42. [PMID: 12385062] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
BACKGROUND DATA Adult T-cell leukemia/lymphoma (ATL) is a malignant proliferation of activated CD4+ T lymphocytes. The disease is almost exclusively found in patients living in retrovirus HTLV-1 endemic areas. VIROLOGY In ATL, monoclonal HTLV-1 provirus is integrated into atypical lymphocytes, called clover-leaf lymphocytes. The pathogenic mechanism leading to HTLV-1-induced leukemogenesis remains obscure. The disease generally occurs after a long latency period. FOUR CLINICAL SUBTYPES The diversity of the clinical presentation has led to the classification of ATL into four subtypes: acute or prototype, lymphoma, chronic, and painless. In the acute form of ATL there is a tumor syndrome associated with paraneoplastic hypercalcemia and a high rate of opportunistic infections due to the immunodepression predominated by cellular immunity. CLINICAL COURSE Prognosis is poor for the acute and lymphomatous forms with a median survival of 6 and 10 months respectively. Infectious episodes are frequent, often caused by Pneumocystis carinii, and require systematic prophylaxis. Screening for anguilulosis and prophylaxis is also necessary.
Collapse
Affiliation(s)
- C Besson
- Service d'Hématologie clinique, Hôpital Necker, 149, rue de Sèvres, F75743 Paris
| | | | | | | | | | | | | |
Collapse
|
42
|
Besson C, Plumelle Y, Arnulf B, Gonin C, Panelatti G, Bazarbachi A, Hermine O. [Adult T-cell leukemia/lymphoma. Therapeutic aspects]. Presse Med 2001; 30:243-5. [PMID: 12385063] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
UNLABELLED CONVENTIONAL CHEMOTHERAPY: Complete remission of aggressive ATL (acute or lymphomatous forms) can be achieved in about 40% of the patients with conventional chemotherapy, but early relapse and infectious complications is the rule. For painless and chronic ATL, chemotherapy does not appear to be useful and can aggravate the immunodepression. NEW THERAPEUTIC APPROACHES Encouraging results have been obtained with a combination regimen using an antiretroviral agent (AZT) and interferon alpha. Response rate has been high with good tolerance. In responders, the survival rate is better than with conventional chemotherapy. PERSPECTIVES The success of a potentially antiretroviral approach for the treatment of this generally chemoresistant disease suggests that HTLV-1 virus could have a continuous effect on in vivo leukomogenesis.
Collapse
Affiliation(s)
- C Besson
- Service d'Hématologie clinique, Hôpital Necker, 149, rue de Sèvres, F75743 Paris
| | | | | | | | | | | | | |
Collapse
|
43
|
Haioun C, Besson C, Lepage E, Thieblemont C, Simon D, Rose C, Tilly H, Sonet A, Lederlin P, Attal M, Brière J, Reyes F. Incidence and risk factors of central nervous system relapse in histologically aggressive non-Hodgkin's lymphoma uniformly treated and receiving intrathecal central nervous system prophylaxis: a GELA study on 974 patients. Groupe d'Etudes des Lymphomes de l'Adulte. Ann Oncol 2000; 11:685-90. [PMID: 10942056 DOI: 10.1023/a:1008394827806] [Citation(s) in RCA: 151] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Incidence of central nervous system (CNS) recurrence in patients with aggressive non-Hodgkin's lymphoma who did not receive meningeal prophylaxis is about 5%. Controversy remains regarding risk factors associated with such an event preventing a rational approach of prophylactic strategies. PATIENTS AND METHODS We analyzed a cohort of 974 patients with aggressive lymphoma in complete remission (CR). All the patients received a CNS prophylaxis consisting of intrathecal injections and intravenous high-dose methotrexate. The risk repartition on the basis of the international prognostic index (IPI) of these 974 CR-patients was low (L): 41%, low-intermediate (LI): 27%, high-intermediate (HI): 19%, high (H): 13%. RESULTS The incidence of isolated CNS relapse was 1.6%. In a first multivariate logistic regression analysis an increased LDH (P = 0.05, RR = 5) and the presence of more than one extranodal site (P = 0.05, RR = 3) were identified as independent risk factors for isolated CNS relapse. Another multivariate analysis incorporating IPI as a unique parameter showed that only IPI remained significantly associated with a higher risk of CNS relapse (L-LI: 0.6% vs. HI H: 4.1%, P = 0.002; RR = 7). CONCLUSION Prophylaxis notably reduces the risk of CNS recurrence in the higher risk patients. By contrast, we propose the deletion of prophylactic intrathecal injections in the lower risk patients.
Collapse
Affiliation(s)
- C Haioun
- Hôpital Henri Mondor-AP-HP, Créteil, France. corinne.haioun@hmn-ap-hop-paris
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Abstract
We have recently shown that dopaminergic responses to an attractive or an aversive stimulus were respectively increased and decreased in the core part of the nucleus accumbens and the ventromedial dorsal striatum. By contrast, increases in dopaminergic responses were obtained in the shell part of the nucleus accumbens with stimuli of both affective values. In addition, the involvement of the basolateral amygdala in affective processes has been reported by several authors. Anatomo-functional relationships between the basolateral amygdala and striatal structures have also been described. Thus, in the present work we studied the regulation by the basolateral amygdala of affective dopaminergic responses in the two parts of the nucleus accumbens (core and shell) and the ventromedial dorsal striatum. More precisely, variations in extracellular levels of dopamine induced by an attractive or an aversive olfactory stimulus were studied using in vivo voltammetry in freely moving rats. Changes in dopamine levels in the three left striatal regions were measured after functional blockade of the ipsilateral basolateral amygdala with tetrodotoxin. Changes in place attraction or aversion toward the stimulus were studied in parallel to dopamine variations. The results obtained suggest a specific regulation of affective dopaminergic responses in the two parts of the nucleus accumbens by the basolateral amygdala and a lack of influence of the basolateral amygdala on the ventromedial dorsal striatum. The results suggest that attraction or aversion toward a stimulus are correlated with dopamine variations in the core of the nucleus accumbens and that the basolateral amygdala controls affective behavioural responses. These data may provide new insights into the pathophysiology of schizophrenic psychoses.
Collapse
Affiliation(s)
- A Louilot
- CNRS UMR 5541, Laboratoire de Neuropsychobiologie des Désadaptations, Université de Bordeaux II, 146 rue Léo Saignat, 33076, Bordeaux, France.
| | | |
Collapse
|
45
|
Moriceau S, Besson C, Levrat MA, Moundras C, Rémésy C, Morand C, Demigné C. Cholesterol-lowering effects of guar gum: changes in bile acid pools and intestinal reabsorption. Lipids 2000; 35:437-44. [PMID: 10858029 DOI: 10.1007/s11745-000-542-x] [Citation(s) in RCA: 37] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Soluble fibers such as guar gum (GG) may exert cholesterol-lowering effects. It is generally accepted that bile acid (BA) reabsorption in portal blood is reduced, thus limiting the capacity of BA to down-regulate liver cholesterol 7alpha-hydroxylase, the rate-limiting enzyme of BA synthesis. In the present work, rats were adapted to fiber-free (FF) or 5% GG diets (supplemented or not with 0.25% cholesterol), to investigate various aspects of enterohepatic BA cycling. GG in the diet at a level of 5% elicited a significant lowering of plasma cholesterol during the absorptive period, in cholesterol-free (-13%) or 0.25% cholesterol (-20%) diet conditions. In rats adapted to the GG diets, the small intestinal and cecal BA pools and the ileal vein-artery difference for BA were markedly enhanced; reabsorption in the cecal vein was also enhanced in these rats. [14C]Taurocholate absorption, determined in perfused ileal segments, was not significantly different in rats adapted to the FF or GG diet, suggesting that a greater flux of BA in the ileum might support a greater ileal BA reabsorption in rats adapted to the GG diet. In contrast, capacities for [14C]cholate absorption from the cecum at pH 6.5 were higher in rats adapted to the GG diet than to the FF diet. Acidification of the bulk medium in isolated cecum (from pH 7.1 down to pH 6.5 or 5.8) or addition of 100 mM volatile fatty acids was also found to stimulate cecal [14C]cholate absorption. These factors could contribute to accelerated cecal BA absorption in rats fed the GG diet. The effects of GG on steroid fecal excretion thus appear to accompany a greater intestinal BA absorption and portal flux to the liver. These results suggest that some mechanisms invoked to explain cholesterol-lowering effect of fibers should be reconsidered.
Collapse
Affiliation(s)
- S Moriceau
- Unité Maladies Métaboliques & Micronutriments, INRA de Theix, St-Genès-Champanelle, France
| | | | | | | | | | | | | |
Collapse
|
46
|
Crespy V, Morand C, Manach C, Besson C, Demigne C, Remesy C. Part of quercetin absorbed in the small intestine is conjugated and further secreted in the intestinal lumen. Am J Physiol 1999; 277:G120-6. [PMID: 10409158 DOI: 10.1152/ajpgi.1999.277.1.g120] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rutin and quercetin absorption and metabolism were investigated in rats after in situ perfusion of jejunum plus ileum (15 nmol/min). In contrast to rutin, a high proportion of quercetin (two-thirds) disappeared during perfusion, reflecting extensive transfer into the intestinal wall. Net quercetin absorption was not complete (2.1 nmol/min), inasmuch as 52% were reexcreted in the lumen as conjugated derivatives (7.7 nmol/min). Enterohepatic recycling contribution of flavonoids was excluded by catheterization of the biliary duct before perfusion. After a 30-min perfusion period, 0.71 microM of quercetin equivalents were detected in plasma, reflecting a significant absorption from the small intestine. The differential hydrolysis of effluent samples by glucuronidase and/or sulfatase indicates that the conjugated forms released in the lumen were 1) glucuronidated derivatives of quercetin and of its methoxylated forms (64%) and 2) sulfated form of quercetin (36%). In vitro quercetin glucuronides synthetized using jejunal and ileal microsomal fractions were similar to those recovered in the effluent of perfusion. These data suggest that glucuronidation and sulfatation take place in intestinal cells, whereas no glucurono-sulfoconjugates could be detected in the effluent. The present work shows that a rapid quercetin absorption in the small intestine is very effective together with its active conjugation in intestinal cells.
Collapse
Affiliation(s)
- V Crespy
- Laboratoire des Maladies Métaboliques et des Micronutriments, Institut National de la Recherche Agronomique de Clermont-Ferrand/Theix, 63122 Saint Genès Champanelle, France.
| | | | | | | | | | | |
Collapse
|
47
|
Besson C, Pialoux G, Dupont B, Pol S, Hermine O, Arnulf B, Landau A, McCormick JB. Lack of association between HCV infection and HIV-related lymphoma. Br J Haematol 1999; 105:568-9. [PMID: 10233441 DOI: 10.1111/j.1365-2141.1999.01419.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
48
|
Abstract
Pseudomonas aeruginosa elastase was used to synthesize various N-protected dipeptide amides. The identity of the products was confirmed by FAB(+)-MS. After recrystallization, the yield of their synthesis was calculated, their purity was checked by RP-HPLC and their melting point was measured. With regard to the hydrolysis, it is well-established that the enzyme prefers hydrophobic amino acids in P'1 position and it has a wide specificity for the P1 position. This specificity was demonstrated to be quite unchanged when comparing the initial rates of peptide bond formation between different carboxyl donors (Z-aa) and nucleophiles (aa-NH2). The elastase, but not the thermolysin, was notably able to incorporate tyrosine and tryptophan in P'1 position. Furthermore, synthesis initial rates were at least 100 times faster with the elastase. To overcome the problematic condensation of some amino acids during chemical peptide synthesis, it has been previously suggested that enzymatic steps can combine with a chemical strategy. We demonstrated that the elastase readily synthesizes dipeptide derivatives containing various usual N-protecting groups. It was especially able to condense phenylalaninamide to Fmoc- and Boc-alanine. Increasing interest in peptides containing unnatural amino acids led us to try the elastase-catalyzed synthesis of Z-dipeptide amides including those amino acids in the P1 position. A synthesis was demonstrated with alphaAbu, Nle, Nva and Phg.
Collapse
Affiliation(s)
- S Rival
- Laboratoire de Biochimie Analytique et de Synthèse Bioorganique, Université Claude Bernard Lyon 1, Villeurbanne, France
| | | | | | | |
Collapse
|
49
|
Besson C, Stélianides S, Belmatoug N, Silbermann-Hoffman O, Couvelard A, Joly V, Carbon C, Fantin B. Multifocal osteonecrosis after chemotherapy in a patient with breast cancer. J Rheumatol 1998; 25:2479-80. [PMID: 9858457] [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: 02/09/2023]
|
50
|
|