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Haaser T, Lahmi L, Osman D, Gesbert C, Cheval V, Constantinides Y, de Crevoisier R, Dejean C, Escande A, Ghannam Y, Lorchel F, Thureau S, Lagrange JL, Durdux C, Huguet F. [Ethical stakes of information in radiation oncology: Thinking the risk and building the therapeutic alliance]. Cancer Radiother 2023; 27:480-486. [PMID: 37573195 DOI: 10.1016/j.canrad.2023.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 08/14/2023]
Abstract
Informing patients before receiving radiation therapy is a fundamental ethical imperative. As a condition of the possibility of autonomy, information allows people to make health decisions concerning themselves, which is required by French law. This information includes in particular the potential risks due to radiation therapy. It is therefore necessary to think about what risk is, and how to define and assess it, in order to finally communicate it. The practice of informing people involves many ethical issues relating to the very content of the information, the form in which it is transmitted or even the intention that leads the health professional to say (or not to say) the risk. The transmission of information also questions the way to build a relationship of trust with the patients and how to integrate their own representations about these treatments. Between the risks of paternalism or even defensive medicine, this practice is at the heart of our professional practice.
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Affiliation(s)
- T Haaser
- Service d'oncologie radiothérapie, hôpital Haut Lévêque, centre hospitalier universitaire de Bordeaux, avenue Magellan, 33600 Pessac, France; Centre éthique et recherche en santé de Bordeaux, centre hospitalier universitaire de Bordeaux, Bordeaux, France; EA 4574 sciences, philosophie, humanités, universités de Bordeaux et Bordeaux Montaigne, Pessac, France.
| | - L Lahmi
- Service d'oncologie radiothérapie, institut Curie, Paris, France
| | - D Osman
- Service de médecine intensive-réanimation, hôpital de Bicêtre, AP-HP, DMU Correve, université Paris-Saclay, Le Kremlin-Bicêtre, Paris, France
| | - C Gesbert
- Direction de la qualité, des services aux patients et des parcours, centre hospitalier de Versailles, Versailles, France
| | - V Cheval
- Service universitaire d'oncologie radiothérapie, centre Oscar-Lambret, faculté de médecine Henri-Warembourg, laboratoire CRIStAL, UMR9189, université de Lille, Lille, France
| | - Y Constantinides
- Espace éthique Île-de-France, Paris université Sorbonne Nouvelle, Paris, France
| | - R de Crevoisier
- Service d'oncologie radiothérapie, centre Eugène-Marquis, Rennes, France
| | - C Dejean
- Service d'oncologie radiothérapie, unité de physique médicale, centre Antoine-Lacassagne, Nice, France
| | - A Escande
- Service universitaire d'oncologie radiothérapie, centre Oscar-Lambret, faculté de médecine Henri-Warembourg, laboratoire CRIStAL, UMR9189, université de Lille, Lille, France
| | - Y Ghannam
- Service d'oncologie radiothérapie, hôpital Tenon, centre de recherche Saint-Antoine UMR_S 938, institut universitaire de cancérologie, AP-HP, Sorbonne université, Paris, France
| | - F Lorchel
- Service d'oncologie radiothérapie, centre hospitalier universitaire Lyon-Sud, Lyon, France; Centre d'oncologie radiothérapie et oncologie de Mâcon (Orlam), Mâcon, France
| | - S Thureau
- Service d'oncologie radiothérapie, Quantis Litis EA 4108, centre Henri-Becquerel, Rouen, France
| | - J L Lagrange
- Université Paris-Est Créteil Val-de-Marne, Paris, France
| | - C Durdux
- Service d'oncologie radiothérapie, hôpital européen Georges-Pompidou, Paris, France
| | - F Huguet
- Service d'oncologie radiothérapie, hôpital Tenon, centre de recherche Saint-Antoine UMR_S 938, institut universitaire de cancérologie, AP-HP, Sorbonne université, Paris, France
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Shabayek M, Osman T, Wahb M, Elmoazen M, Osman D, Saafan A. Intravesical aminophylline instillation as an alternative for balloon dilatation prior to semi-rigid ureteroscopic management of distal ureteral stones. World J Urol 2022; 40:1805-1811. [PMID: 35618855 PMCID: PMC9237005 DOI: 10.1007/s00345-022-04039-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 05/02/2022] [Indexed: 11/18/2022] Open
Abstract
Purpose In a randomized controlled trial, we evaluated the effect of intravesical aminophylline instillation (IVAI) on intraureteral pressure of lower ureter and its use as an alternative to balloon dilatation after failure of advancing semi-rigid ureteroscope through the ureteric orifice without endodilatation. Methods Our study included 83 patients with juxta-vesical distal ureteral calculi requiring endodilatation after unsuccessfully introducing the semi-rigid ureteroscope through the ureteric orifice. Patients were randomized into two groups: group A (study group) included 41 patients, where IVAI was used to dilate the ureter and facilitate ureteroscopy (the intraureteral pressure was measured using a pressure transducer connected to an invasive pressure monitor before and 5 min after IVAI), whereas group B (control group) included 42 patients, where balloon dilatation was used prior to ureteroscopy. Perioperative surgical outcomes of ureteroscopy were evaluated in both groups. Results A statistically significant decrease in mean intraureteral pressure of intravesical ureter was found after IVAI from 12.34 mmHg ± 1.94 before injection to 8.46 mmHg ± 1.94 after injection (P < 0.001). Ureteral injuries, postoperative pain and hematuria were statistically significantly less among the study group compared to the control group (P < 0.05). We did not find statistically significant differences in operative time, need for DJ ureteral stenting or stone-free rate between both groups and no perioperative side effects were associated with IVAI. Conclusion In ureteroscopic management of distal ureteral stones, intravesical aminophylline instillation is safe, inexpensive and effective in reducing intraureteral pressure and achieves comparable outcomes to balloon dilatation with less ureteral injuries, postoperative pain and hematuria.
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Affiliation(s)
- M. Shabayek
- Urology department, Ain Shams University Hospitals, Abassia, 11361 Cairo Egypt
| | - T. Osman
- Urology department, Ain Shams University Hospitals, Abassia, 11361 Cairo Egypt
| | - M. Wahb
- Urology department, Ain Shams University Hospitals, Abassia, 11361 Cairo Egypt
| | - M. Elmoazen
- Urology department, Ain Shams University Hospitals, Abassia, 11361 Cairo Egypt
| | - D. Osman
- Urology department, Ain Shams University Hospitals, Abassia, 11361 Cairo Egypt
| | - A. Saafan
- Urology department, Ain Shams University Hospitals, Abassia, 11361 Cairo Egypt
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Humbert C, Bukreyeva I, Fortineau N, Cuzon G, Leblanc P, Figueiredo S, Anguel N, Osman D, Barrail-Tran A, Escaut L. Fluoroquinolones : les prescriptions sont-elles pertinentes dans notre CHU ? Med Mal Infect 2020. [DOI: 10.1016/j.medmal.2020.06.106] [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: 10/23/2022]
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Bonsergent M, Osman D, Escaut L, Barrail-Tran A. Traçabilité de la réévaluation à 48–72 h dans le dossier patient : sommes-nous conformes aux critères de la HAS ? Med Mal Infect 2018. [DOI: 10.1016/j.medmal.2018.04.143] [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: 10/14/2022]
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5
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Hussein A, Eltoum H, Mohamed D, Taha M, Abdelrahim M, Elfaki M, Alfaki M, Alsherif R, Osman D, Digna M. The correlation between the neurological complications of rheumatoid arthritis with the disease activity and functional impairment (Disability). J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3220] [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]
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Mullins ES, Stasyshyn O, Alvarez-Román MT, Osman D, Liesner R, Engl W, Sharkhawy M, Abbuehl BE. Extended half-life pegylated, full-length recombinant factor VIII for prophylaxis in children with severe haemophilia A. Haemophilia 2016; 23:238-246. [DOI: 10.1111/hae.13119] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2016] [Indexed: 11/28/2022]
Affiliation(s)
- E. S. Mullins
- Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - O. Stasyshyn
- SI Institute of Blood Pathology and Transfusion Medicine of NAMSU; Lviv Ukraine
| | | | - D. Osman
- Hospital Tengku Ampuan Rahimah; Klang Selangor Malaysia
| | - R. Liesner
- Great Ormond Street Hospital for Children; London UK
| | - W. Engl
- Baxalta Innovations GmbH, now part of Shire; Vienna Austria
| | - M. Sharkhawy
- Baxalta Innovations GmbH, now part of Shire; Vienna Austria
| | - B. E. Abbuehl
- Baxalta Innovations GmbH, now part of Shire; Vienna Austria
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Bourdin V, Burlacu R, Osman D, Goujard C, Lambotte O. Coagulation intra-vasculaire disséminée au cours de la maladie de Biermer : une présentation atypique. Rev Med Interne 2015. [DOI: 10.1016/j.revmed.2015.10.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Richard C, Argaud L, Blet A, Boulain T, Contentin L, Dechartres A, Dejode JM, Donetti L, Fartoukh M, Fletcher D, Kuteifan K, Lasocki S, Liet JM, Lukaszewicz AC, Mal H, Maury E, Osman D, Outin H, Richard JC, Schneider F, Tamion F. [Extracorporeal life support for patients with acute respiratory distress syndrome (adult and paediatric). Consensus conference organized by the French Intensive Care Society]. Rev Mal Respir 2014; 31:779-95. [PMID: 25391514 DOI: 10.1016/j.rmr.2014.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 03/24/2014] [Indexed: 01/19/2023]
Affiliation(s)
- C Richard
- Service de réanimation médicale, EA 4533, université Paris-Sud, hôpitaux universitaires Paris-Sud, hôpital de Bicêtre, AP-HP, 78, rue du Général-Leclerc, 94270 Le Kremlin-Bicêtre, France.
| | - L Argaud
- Service de réanimation médicale, groupement hospitalier Édouard-Herriot, hospices civils de Lyon, 69437 Lyon, France
| | - A Blet
- Département d'anesthésie-réanimation, centre de traitement des brulés, hôpitaux universitaires Saint-Louis, Lariboisière, Fernand-Widal, hôpital Saint Louis, AP-HP, 75010 Paris, France
| | - T Boulain
- Service de réanimation polyvalente, hôpital de La Source, centre hospitalier régional Orléans, 45067 Orléans, France
| | - L Contentin
- Service de réanimation polyvalente, hôpital Bretonneau, CHRU de Tours, 37000 Tours, France
| | - A Dechartres
- Inserm U1153, équipe « méthodes en évaluation thérapeutique des maladies chroniques », centre de recherche épidémiologie et biostatistique, centre Cochrane français, Hôtel-Dieu, 75004 Paris, France
| | - J-M Dejode
- Réanimation pédiatrique, hôpital Mère-Enfant, CHU de Nantes, 40000 Nantes, France
| | - L Donetti
- Service de réanimation, centre hospitalier Le Raincy-Montfermeil, 93370 Montfermeil, France
| | - M Fartoukh
- Unité de réanimation médicochirurgicale, hôpitaux universitaire Est Parisien, hôpital Tenon, AP-HP, 75020 Paris, France
| | - D Fletcher
- Département d'anesthésie, hôpitaux universitaires Paris Île-de-France Ouest, hôpital Raymond-Poincaré, AP-HP, 92380 Garches, France
| | - K Kuteifan
- Service de réanimation médicale, hôpital Émile-Muller, 68070 Mulhouse, France
| | - S Lasocki
- Pôle d'anesthésie réanimation, LUNAM université, université d'Angers, CHU d'Angers, 49000 Angers, France
| | - J-M Liet
- Réanimation pédiatrique, hôpital Mère-Enfant, CHU de Nantes, 40000 Nantes, France
| | - A-C Lukaszewicz
- Département d'anesthésie réanimation - réanimation chirurgicale et postopératoire, groupe hospitalier Saint-Louis-Lariboisière-Fernand-Widal, hôpital Lariboisière, AP-HP, 75010 Paris, France
| | - H Mal
- Service de pneumologie, hôpitaux universitaires Paris Nord Val-de-Seine, hôpital Bichat, AP-HP, 75018 Paris, France
| | - E Maury
- Service de réanimation médicale, hôpitaux universitaire Est Parisien, hôpital Saint-Antoine, AP-HP, 75020 Paris, France
| | - D Osman
- Service de réanimation médicale, EA 4533, université Paris-Sud, hôpitaux universitaires Paris-Sud, hôpital de Bicêtre, AP-HP, 78, rue du Général-Leclerc, 94270 Le Kremlin-Bicêtre, France
| | - H Outin
- Service de réanimation médicochirurgicale, centre hospitalier intercommunal de Poissy-Saint-Germain-en-Laye, 78300 Poissy, France
| | - J-C Richard
- Service de réanimation médicale, hospices civils de Lyon, hôpital de la Croix-Rousse, 69004 Lyon, France
| | - F Schneider
- Service de réanimation médicale, faculté de médecine, université de Strasbourg, hôpitaux universitaires de Strasbourg, hôpital de Hautepierre, Hautepierre, France
| | - F Tamion
- Inserm U1096, IRIB, service de réanimation médicale, université de Rouen, CHU Charles-Nicolle, 76031 Rouen, France
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Breig O, Bras S, Martinez Soria N, Osman D, Heidenreich O, Haenlin M, Waltzer L. Pontin is a critical regulator for AML1-ETO-induced leukemia. Leukemia 2014; 28:1271-9. [PMID: 24342949 DOI: 10.1038/leu.2013.376] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 12/05/2013] [Accepted: 12/11/2013] [Indexed: 01/07/2023]
Abstract
The oncogenic fusion protein AML1-ETO, also known as RUNX1-RUNX1T1 is generated by the t(8;21)(q22;q22) translocation, one of the most frequent chromosomal rearrangements in acute myeloid leukemia (AML). Identifying the genes that cooperate with or are required for the oncogenic activity of this chimeric transcription factor remains a major challenge. Our previous studies showed that Drosophila provides a genuine model to study how AML1-ETO promotes leukemia. Here, using an in vivo RNA interference screen for suppressors of AML1-ETO activity, we identified pontin/RUVBL1 as a gene required for AML1-ETO-induced lethality and blood cell proliferation in Drosophila. We further show that PONTIN inhibition strongly impaired the growth of human t(8;21)(+) or AML1-ETO-expressing leukemic blood cells. Interestingly, AML1-ETO promoted the transcription of PONTIN. Moreover, transcriptome analysis in Kasumi-1 cells revealed a strong correlation between PONTIN and AML1-ETO gene signatures and demonstrated that PONTIN chiefly regulated the expression of genes implicated in cell cycle progression. Concordantly, PONTIN depletion inhibited leukemic self-renewal and caused cell cycle arrest. All together our data suggest that the upregulation of PONTIN by AML1-ETO participate in the oncogenic growth of t(8;21) cells.
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MESH Headings
- ATPases Associated with Diverse Cellular Activities
- Animals
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Blotting, Western
- Carrier Proteins/antagonists & inhibitors
- Carrier Proteins/genetics
- Carrier Proteins/metabolism
- Cell Cycle
- Cell Proliferation
- Chromosomes, Human, Pair 21/genetics
- Chromosomes, Human, Pair 8/genetics
- Core Binding Factor Alpha 2 Subunit/genetics
- Core Binding Factor Alpha 2 Subunit/metabolism
- DNA Helicases/antagonists & inhibitors
- DNA Helicases/genetics
- DNA Helicases/metabolism
- Drosophila melanogaster/genetics
- Drosophila melanogaster/growth & development
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Humans
- Leukemia, Myeloid, Acute/etiology
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Male
- Oligonucleotide Array Sequence Analysis
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/metabolism
- RNA, Messenger/genetics
- RNA, Small Interfering/genetics
- RUNX1 Translocation Partner 1 Protein
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Translocation, Genetic
- Tumor Cells, Cultured
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Affiliation(s)
- O Breig
- CNRS, CBD UMR5547, Université de Toulouse, UPS, CBD (Centre de Biologie du Développement), Bâtiment 4R3, 118 route de Narbonne, Toulouse, France
| | - S Bras
- CNRS, CBD UMR5547, Université de Toulouse, UPS, CBD (Centre de Biologie du Développement), Bâtiment 4R3, 118 route de Narbonne, Toulouse, France
| | - N Martinez Soria
- Northern Institute for Cancer Research, University of Newcastle, Newcastle upon Tyne, UK
| | - D Osman
- CNRS, CBD UMR5547, Université de Toulouse, UPS, CBD (Centre de Biologie du Développement), Bâtiment 4R3, 118 route de Narbonne, Toulouse, France
| | - O Heidenreich
- Northern Institute for Cancer Research, University of Newcastle, Newcastle upon Tyne, UK
| | - M Haenlin
- CNRS, CBD UMR5547, Université de Toulouse, UPS, CBD (Centre de Biologie du Développement), Bâtiment 4R3, 118 route de Narbonne, Toulouse, France
| | - L Waltzer
- CNRS, CBD UMR5547, Université de Toulouse, UPS, CBD (Centre de Biologie du Développement), Bâtiment 4R3, 118 route de Narbonne, Toulouse, France
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10
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Richard C, Argaud L, Blet A, Boulain T, Contentin L, Dechartres A, Dejode JM, Donetti L, Fartoukh M, Fletcher D, Kuteifan K, Lasocki S, Liet JM, Lukaszewicz AC, Mal H, Maury E, Osman D, Outin H, Richard JC, Schneider F, Tamion F. Assistance extracorporelle au cours du syndrome de détresse respiratoire aiguë (chez l’adulte et l’enfant, à l’exclusion du nouveau-né). Conférence de consensus organisée par la Société de réanimation de langue française. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s13546-014-0858-4] [Citation(s) in RCA: 4] [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: 01/19/2023]
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11
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Drevon L, Ackermann F, Osman D, Lerolle N, Desthieux C, Anguel N, Lambotte O. Traitement par eculizumab d’une microangiopathie thrombotique secondaire à une autogreffe de cellules souches hématopoïétiques conditionnée par BEAM. Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.10.220] [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: 11/16/2022]
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12
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Diehl JL, Coolen N, Faisy C, Osman D, Prat G, Sebbane M, Nieszkowska A, Gervais C, Richard JCM, Richecoeur J, Brochard L, Mercat A, Guerot E, Borgel D. Growth-Arrest-Specific 6 (GAS6) Protein in ARDS Patients: Determination of Plasma Levels and Influence of PEEP Setting. Respir Care 2013; 58:1886-91. [DOI: 10.4187/respcare.02129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Fadda H, Khanna M, Santos J, Osman D, Gaisford S, Basit A. The use of dynamic mechanical analysis (DMA) to evaluate plasticization of acrylic polymer films under simulated gastrointestinal conditions. Eur J Pharm Biopharm 2010; 76:493-7. [DOI: 10.1016/j.ejpb.2010.08.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Accepted: 08/20/2010] [Indexed: 11/26/2022]
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14
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Kamouh W, Jabot J, Osman D, Lambotte O, Goujard C. Purpura thrombotique thrombocytopénique chez une patiente infectée par le VIH : décès brutal au cours d’une perfusion de rituximab. Rev Med Interne 2008. [DOI: 10.1016/j.revmed.2008.10.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Morin S, Maigné G, Osman D, Pallier C, Goujard C, Lambotte O. Syndrome d’activation macrophagique et maladie de Castelman : rechercher HHV8 malgré une sérologie négative : intérêt de la PCR. Rev Med Interne 2008. [DOI: 10.1016/j.revmed.2008.10.264] [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: 11/26/2022]
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Guiard-Schmid JB, Lacombe K, Osman D, Meynard JL, Fèbvre M, Meyohas MC, Frottier J. [Paragonimiasis: a rare little known disease]. Presse Med 1998; 27:1835-7. [PMID: 9856127] [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: 02/09/2023] Open
Abstract
BACKGROUND Paragonimiasis, caused by a lung fluke, is an parasitic disease rarely encountered in France. CASE REPORT A 52-year-old man developed dyspnea, cough, mild fever and chest pain. Pleural effusion suggested possible pulmonary embolism or tuberculosis. Cell counts in blood and pleural effusion fluid revealed major eosinophila in this patient who had recently returned from a trip to Japan. Paragonimiasis was confirmed by ELISA. Treatment with praziquantel led to complete clinical and radiographic recovery. DISCUSSION The clinical and radiographic features of paragonimiasis are often similar to tuberculosis with pleuropneumopathy, mild fever and dyspnea. ELISA has now replaced parasitologic diagnosis. Cure is achieved with praziquantel.
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Affiliation(s)
- J B Guiard-Schmid
- Service des Maladies infectieuses et Tropicales, Hôpital Saint-Antoine, Paris, France
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Schmid JBG, Osman D, Nathan N, Meynard JL, Meyohas MC, Frottier J. Tuberculose cérébrale: aggravation radiologique initiale paradoxale sous traitement. Rev Med Interne 1998. [DOI: 10.1016/s0248-8663(98)80273-7] [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]
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Majumdar S, Newitt D, Mathur A, Osman D, Gies A, Chiu E, Lotz J, Kinney J, Genant H. Magnetic resonance imaging of trabecular bone structure in the distal radius: relationship with X-ray tomographic microscopy and biomechanics. Osteoporos Int 1996; 6:376-85. [PMID: 8931032 DOI: 10.1007/bf01623011] [Citation(s) in RCA: 148] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The contribution of trabecular bone structure to bone strength is of considerable interest in the study of osteoporosis and other disorders characterized by changes in the skeletal system. Magnetic resonance (MR) imaging of trabecular bone has emerged as a promising technique for assessing trabecular bone structure. In this in vitro study we compare the measures of trabecular structure obtained using MR imaging and higher-resolution X-ray tomographic microscopy (XTM) imaging of cubes from human distal radii. The XTM image resolution is similar to that obtained from histomorphometric sections (18 microns isotropic), while the MR images are obtained at a resolution comparable to that achievable in vivo (156 x 156 x 300 microns). Standard histomorphometric measures, such as trabecular bone area fraction (synonymous with BV/TV), trabecular width, trabecular spacing and trabecular number, texture-related measures and three-dimensional connectivity (first Betti number/volume) of the trabecular network have been derived from these images. The variation in these parameters as a function of resolution, and the relationship between the structural parameters, bone mineral density and the elastic modulus are also examined. In MR images, because the resolution is comparable to the trabecular dimensions, partial volume effects occur, which complicate the segmentation of the image into bone and marrow phases. Using a standardized thresholding criterion for all images we find that there is an overestimation of trabecular bone area fraction (approximately 3 times), trabecular width (approximately 3 times), fractal dimension (approximately 1.4 times) and first Betti number/ volume (approximately 10 times), and an underestimation of trabecular spacing (approximately 1.6 times) in the MR images compared with the 18-microns XTM images. However, even for a factor of 9 difference in spatial resolution, the differences in the morphological trabecular structure measures ranged from a factor of 1.4 to 3.0. We have found that trabecular width, area fraction, number, fractal dimension and Betti number/volume measured from the XTM and MR images increases, while trabecular spacing decreases, as the bone mineral density and elastic modulus increase. A preliminary bivariate analysis showed that in addition to bone mineral density alone, the Betti number, trabecular number and spacing contributed to the prediction of the elastic modulus. This preliminary study indicates that measures of trabecular bone structure using MR imaging may play a role in the study of osteoporosis.
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Affiliation(s)
- S Majumdar
- Department of Radiology, University of California San Francisco 94143, USA
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Grabowski SJ, Grabowski SJ, Wilamowski J, Wilamowski J, Osman D, Osman D, Sepiol JJ, Sepiol JJ, Rodier N, Rodier N. Synthesis, Crystal Structure and Intramolecular Interactions of 2-Methyl-3-(2-Methylphenyl)but-1-ene-1,1-dicarbonitrile (MMBD). Aust J Chem 1996. [DOI: 10.1071/ch9960951] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
2-Methyl-3-(2-methylphenyl)but-1-ene-1,1-dicarbonitrile (MMBD) has been synthesized from 3-(o-tolyl)butan-2-one. The crystal and molecular structure of this compound was solved by X-ray diffraction, with estimated standard deviations ≤ � 0.005 Ǻ for bond lengths, and ≤ 0.3° for bond angles. Intramolecular interactions of the C≡N group, i.e. of the C-H...N, C-H...π (electrons) and C-H...C type, were observed, and the possibility of weak intramolecular hydrogen bridges in the molecule of MMBD was considered. The geometry of the MMBD molecule from AM1 calculations was compared with the X-ray structure.
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Majumdar S, Newitt D, Jergas M, Gies A, Chiu E, Osman D, Keltner J, Keyak J, Genant H. Evaluation of technical factors affecting the quantification of trabecular bone structure using magnetic resonance imaging. Bone 1995; 17:417-30. [PMID: 8573417 DOI: 10.1016/s8756-3282(95)00263-4] [Citation(s) in RCA: 145] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
High resolution magnetic resonance (MR) techniques combined with standard techniques of stereology and texture analysis have been used to quantify trabecular structure. Using dried excised specimens from the tibia (n = 10) and radius (n = 2) we evaluate the impact of using volumetric gradient-echo (GE) and spin-echo (SE) MR imaging sequences, the relative importance of echo time in gradient-echo MR imaging, and the impact of different threshold values to segment the bone and bone marrow on the estimation of trabecular bone structure. We also investigate the inter-relationships between the different structural parameters derived from MR images. Images were obtained using fast gradient-echo and spin-echo imaging sequences, with TE values ranging from 7 to 17 ms using 4.7 and 1.5 Tesla imaging systems. In-plane image resolution ranged from 128 to 156 microns, and slice thickness ranged from 128 to 1000 microns. We derived stereological measures such as the mean intercept length, trabecular width, fractional area of trabecular bone, trabecular number, and trabecular spacing, the fractal dimension as a texture-related parameter and the Euler number as a measure of connectivity from these images. We found that the mean intercept length as a function of angle traced an ellipse with the orientation of the principal axis of the ellipse, a measure of trabecular orientation, identical when measured from the spin-echo or gradient-echo MR images. Absolute measures such as the fractional area, trabecular width, trabecular number, and fractal dimension as measured from gradient echo images were 28%, 30%, 1.3%, and 0.6% greater, respectively, than those calculated from spin-echo images, while the trabecular spacing was 14% less when calculated from gradient-echo images compared to spin-echo images. The structural parameters also depended on the echo time used to obtain the MR image. The choice of the threshold used to segment the high resolution images also affected the estimated structural parameters significantly. Our results indicate that MR may be used to visualize and quantify trabecular bone architecture; however, the different technical factors that could affect the appearance of MR images must be understood and considered in the data analysis and interpretation.
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Affiliation(s)
- S Majumdar
- Magnetic Resonance Science Center, University of California, San Francisco 94143, USA
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Lewin AA, Cohen A, Abitbol AA, Schwade JG, Osman D, DerHagopian R, Ostroski J, Marcial-Vega V, Houdek P, Gould E. Conservative surgery and radiation therapy for intraductal carcinoma of the breast. J Fla Med Assoc 1992; 79:762-5. [PMID: 1336028] [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: 12/26/2022]
Abstract
Nineteen women with intraductal carcinoma of the breast were treated with conservative surgery and radiotherapy from 1982 to 1990. All underwent excisional biopsy or wide local excision of the primary tumor. Definitive irradiation consisted of 4500 cGy in 180 cGy fractions given through tangential fields followed by a breast boost to the primary site to a total dose of 5900-6500 cGy. No patient received regional node irradiation. Median follow-up was 38 months. The five year actuarial rate of local failure was 9%. One patient failed with an infiltrating ductal carcinoma in the treated breast 31 months after initial treatment. Salvage mastectomy was performed. She remains without evidence of disease 43 months after initial treatment. Metastatic breast carcinoma has not developed in any of the patients. Cosmetic result was good to excellent in all patients. With short-term follow-up, conservative surgery and radiotherapy appear to be an acceptable alternative to mastectomy in carefully selected patients with ductal carcinoma in situ. As retrospective and randomized trials mature, the natural history of these lesions treated with conservative surgery and irradiation will be further defined.
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Affiliation(s)
- A A Lewin
- Department of Radiation Oncology, Baptist Hospital of Miami
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Lewin AA, Abitbol AA, Schwade JG, Osman D, DerHagopian R, Ostroski J, Serago C, Houdek P, Bujnoski J. Conservative surgery and radiation therapy for early stage breast cancer. Can large trial experiences be reproduced in a community hospital setting? J Fla Med Assoc 1990; 77:1034-6. [PMID: 1963436] [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: 12/29/2022]
Abstract
Conservative surgery and radiation therapy were used to treat 212 patients with AJC clinical Stage I or II breast carcinoma at the Baptist Hospital of Miami. All had lumpectomy and most axillary lymph node dissection, followed by breast irradiation to a dose of 45 Gy and a boost dose of 14 to 16 Gy to the surgical bed. Median follow-up was 55 months. The five-year actuarial local control and survival rates were 94% and 86% respectively. Eighty-six percent of the patients had excellent or good cosmetic results with minimal differences between the treated and untreated breasts. Treatment-related complications were minor and infrequent. These results appear comparable to retrospective reviews at major university centers and ongoing prospective randomized trials.
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Affiliation(s)
- A A Lewin
- Baptist Hospital of Miami, Regional Cancer Treatment Center 33256
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