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Bordes A, El Bendary Y, Goudard G, Masson V, Gourfinkel-An I, Mathon B. Benefits of vagus nerve stimulation on psychomotor functions in patients with severe drug-resistant epilepsy. Epilepsy Res 2023; 198:107260. [PMID: 38007914 DOI: 10.1016/j.eplepsyres.2023.107260] [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: 05/19/2023] [Revised: 10/22/2023] [Accepted: 11/16/2023] [Indexed: 11/28/2023]
Abstract
PURPOSE Patients with severe drug-resistant epilepsy (DRE) experience psychomotor disorders. Our study aimed to assess the psychomotor outcomes after vagus nerve stimulation (VNS) in this population. METHODS We prospectively evaluated psychomotor function in 17 adult patients with severe DRE who were referred for VNS. Psychomotor functions were examined, in the preoperative period and at 18 months post-surgery, by a psychomotor therapist using a full set of the following specific tests: the Rey-Osterrieth complex figure (ROCF) test, the Zazzo's cancelation task (ZCT), the Piaget-Head test and the paired images test. RESULTS At 18 months post-VNS surgery, the Piaget-head scores increased by 3 points (p = 0.008) compared to baseline. Performances were also improved for ROCF test both in copy (+2.4 points, p = 0.001) and recall (+2.0 points, p = 0.008) tasks and for the paired images test (accuracy index: +28.6 %, p = 0.03). Regarding the ZCT findings, the efficiency index increased in both single (+16 %, p = 0.005) and dual (+17.1 %, p < 0.001) tasks. QoL improved in 88.2 % of patients. CONCLUSIONS Patients with severe DRE treated with VNS experienced improved performance in terms of global psychomotor functions. Perceptual organization, visuospatial memory, laterality awareness, sustained attention, concentration, visual scanning, and inhibition were significantly improved.
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Affiliation(s)
- Alice Bordes
- Sorbonne University, Department of Neurosurgery, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France
| | - Yehia El Bendary
- Sorbonne University, Department of Neurosurgery, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France
| | - Gwen Goudard
- Sorbonne University, Department of Neurology, Epileptology Unit, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France
| | - Véronique Masson
- Sorbonne University, Department of Neurology, Epileptology Unit, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France
| | - Isabelle Gourfinkel-An
- Sorbonne University, Department of Neurology, Epileptology Unit, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France
| | - Bertrand Mathon
- Sorbonne University, Department of Neurosurgery, AP-HP, La Pitié-Salpêtrière Hospital, Paris, France; Paris Brain Institute, ICM, INSERM U 1127, CNRS UMR 7225, Sorbonne University, UMRS 1127, Paris, France; Sorbonne University, GRC 23, Brain Machine Interface, APHP, Paris, France; Sorbonne University, GRC 33, Robotics and Surgical Innovation, APHP, Paris, France.
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Mezjan I, Gourfinkel-An I, Degos V, Clemenceau S, Navarro V, Masson V, Carpentier A, Mathon B. Outpatient vagus nerve stimulation surgery in patients with drug-resistant epilepsy with severe intellectual disability. Epilepsy Behav 2021; 118:107931. [PMID: 33770612 DOI: 10.1016/j.yebeh.2021.107931] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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] [Received: 02/02/2021] [Revised: 03/03/2021] [Accepted: 03/05/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE Vagus nerve stimulation (VNS) implantation is increasingly proposed in outpatient procedure. Some epilepsy syndromes are associated with severe neurodevelopmental disabilities (intellectual disability, autism) and often motor or sensory handicaps, making ambulatory surgery more complex. METHODS We prospectively assessed the feasibility and safety of outpatient VNS implantation in 26 adult patients with drug-resistant epilepsy with severe intellectual disability between December 2017 and October 2020. RESULTS The male-to-female ratio was 0.9 and the mean age on surgery day was 23.1 years. Seventeen patients (65.4%) suffered from epileptic encephalopathy, 7 (26.9%) from cryptogenic or genetic generalized epilepsy, and 2 (7.7%) from severe multifocal epilepsy. Postoperatively, all patients were discharged the day of surgery. No patient was admitted to a hospital or have consulted within one month due to postoperative complications. There was no surgery-related complication during patients' follow-up. CONCLUSION Our study highlights the safety and feasibility of VNS surgery in an outpatient setting for patients with severe intellectual disability. We report detailed protocol and preoperative checklist to optimize outpatient VNS surgery in these not able-bodied patients. Severe disabilities or epilepsy-associated handicaps should not be an exclusion criterion when considering ambulatory VNS implantation.
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Affiliation(s)
- Insafe Mezjan
- APHP, Department of Neurosurgery, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France
| | - Isabelle Gourfinkel-An
- APHP, Department of Neurology, Epileptology Unit, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France; APHP, Reference Center for Rare Epilepsies, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France
| | - Vincent Degos
- APHP, Department of Anesthesia, Critical Care and Peri-Operative Medicine, Pitié-Salpêtrière Hospital, Sorbonne University, Paris, France; Clinical Research Group ARPE, Sorbonne University, Paris, France; INSERM UMR 1141, PROTECT, Paris, France
| | - Stéphane Clemenceau
- APHP, Department of Neurosurgery, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France
| | - Vincent Navarro
- APHP, Department of Neurology, Epileptology Unit, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France; APHP, Reference Center for Rare Epilepsies, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France; Paris Brain Institute, INSERM, CNRS, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM, F-75013 Paris, France
| | - Véronique Masson
- APHP, Department of Neurology, Epileptology Unit, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France
| | - Alexandre Carpentier
- APHP, Department of Neurosurgery, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France; Paris Brain Institute, INSERM, CNRS, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM, F-75013 Paris, France
| | - Bertrand Mathon
- APHP, Department of Neurosurgery, Sorbonne University, La Pitié-Salpêtrière Hospital, Paris, France; Paris Brain Institute, INSERM, CNRS, Sorbonne University, UMR S 1127, Paris Brain Institute, ICM, F-75013 Paris, France.
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Hoyoux M, Snoeck M, Sondag C, Ketelslegers O, Minon JM, Azerad MA, Masson V, Dresse MF. [Multidisciplinary management of the pediatric sickle cell patient in 2019]. Rev Med Liege 2019; 74:586-592. [PMID: 31729847] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sickle cell disease is a common genetic disorder that affects haemoglobin. It is manifested by haemolytic anaemia and vaso-occlusive crisis. It can affect all organs and its evolution is unpredictable. The multidisciplinary management of pediatric patients who suffer from it is essential to adapt their treatment and optimize their evolution. One of the major challenges is to succeed the transition to adult medicine. New therapeutic perspectives are in development and look promising.
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Affiliation(s)
- M Hoyoux
- Service de Pédiatrie, CHU Liège, Belgique
| | - M Snoeck
- Service de Pédiatrie, CHR Liège, Belgique
| | - C Sondag
- Service de Pédiatrie, CHU Liège, Belgique
| | - O Ketelslegers
- Biologie clinique, secteur Hématologie, CHR Liège, Belgique
| | - J M Minon
- Biologie clinique, secteur Hématologie et Transfusion, CHR Liège, Belgique
| | - M A Azerad
- Service d'Hématologie clinique, CHU Liège, Belgique
| | - V Masson
- Service de Gynécologie-Obstétrique, CHU Liège, Belgique
| | - M F Dresse
- Service de Pédiatrie, CHU Liège, Belgique
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Projean D, Lalonde S, Morin J, Nogues E, Séguin A, Vincent A, Lafrance JP, Masson V, Kassis J, Fafard J, Lordkipanidzé M. Study of the bioaccumulation of tinzaparin in renally impaired patients when given at prophylactic doses - The STRIP study. Thromb Res 2018; 174:48-50. [PMID: 30554045 DOI: 10.1016/j.thromres.2018.11.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 11/12/2018] [Accepted: 11/30/2018] [Indexed: 11/25/2022]
Affiliation(s)
- D Projean
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada.
| | - S Lalonde
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Faculté de pharmacie, Université de Montréal, Montréal, Québec, Canada
| | - J Morin
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Faculté de pharmacie, Université de Montréal, Montréal, Québec, Canada
| | - E Nogues
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Faculté de pharmacie, Université de Montréal, Montréal, Québec, Canada
| | - A Séguin
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Faculté de pharmacie, Université de Montréal, Montréal, Québec, Canada
| | - A Vincent
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Faculté de pharmacie, Université de Montréal, Montréal, Québec, Canada
| | - J P Lafrance
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Research Center, CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Département de pharmacologie et physiologie, Université de Montréal, Montréal, Québec, Canada
| | - V Masson
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada
| | - J Kassis
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada; Research Center, CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada
| | - J Fafard
- CIUSSS de l'Est-de-l'Île-de-Montréal, Université de Montréal, Montréal, Québec, Canada
| | - M Lordkipanidzé
- Faculté de pharmacie, Université de Montréal, Montréal, Québec, Canada; Research Center, Montreal Heart Institute; Montréal, Québec, Canada
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Tomazi T, Lopes T, Masson V, Swinkels J, Santos M. Randomized noninferiority field trial evaluating cephapirin sodium for treatment of nonsevere clinical mastitis. J Dairy Sci 2018; 101:7334-7347. [DOI: 10.3168/jds.2017-14002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 04/09/2018] [Indexed: 11/19/2022]
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Cabrera OS, Lehéricy S, Masson V, Samson S, Dupont S. Adapting a memory fMRI research protocol in clinical routine: Feasibility and results. Epilepsy Behav 2018; 81:49-54. [PMID: 29477011 DOI: 10.1016/j.yebeh.2017.11.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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] [Received: 09/19/2017] [Revised: 11/10/2017] [Accepted: 11/19/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The objective of this study was to test the reliability of functional magnetic resonance imaging (fMRI) evaluation of memory function in clinical practice to predict postoperative memory decline in patients with refractory medial temporal lobe epilepsy (MTLE) candidate to surgery. METHODS Twenty-six consecutive patients with MTLE who underwent a complete presurgical evaluation were included. All patients underwent fMRI memory study and complete neuropsychological assessment. Lesions consisted in hippocampal sclerosis in 18 patients (12 right and 6 left), dysembryoplastic neuroepithelial tumor (DNET) in 5 cases (4 right, 1 left), epidermoid cyst in one patient (right). Two patients had no lesion (2 left). RESULTS Nineteen patients (73%) underwent surgery. The other seven patients (27%) declined surgery, mainly because of the risk of memory deficit. The fMRI procedure correctly predicted both verbal and nonverbal memory postoperative outcome in 13 of the patients (72%), failed to predict a postoperative memory worsening in only two patients (12%), and predicted worsening in three patients (17%) that remained stable (versus 44%, 39%, and 17% with the sole neuropsychological testing). The reliability of the fMRI procedure was not influenced by the type of lesion, the side of the epileptic focus, or the type of preoperative memory profile (typical or atypical). SIGNIFICANCE Appearing as a valuable clinical tool to predict postoperative memory outcome, fMRI may add information over and above other available tests.
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Affiliation(s)
- Ovidio Solano Cabrera
- Epilepsy unit, AP-HP Groupe hospitalier Pitié-Salpêtrière-Charles Foix, F-75013 Paris, France; Epilepsy Clinic, Neurology department, Social Security Salvadoran Institute, San Salvador, El Salvador
| | - Stéphane Lehéricy
- Neuroradiology unit, AP-HP Groupe hospitalier Pitié-Salpêtrière-Charles Foix, F-75013 Paris, France; Inserm U 1127, CNRS UMR 7225, UMR S 1127, Institut du Cerveau et de la Moelle épinière - ICM, Centre de Neuroimagerie de Recherche - CENIR, F-75013 Paris, France; Sorbonne University, UPMC Univ. Paris 06, F-75005 Paris, France
| | - Véronique Masson
- Epilepsy unit, AP-HP Groupe hospitalier Pitié-Salpêtrière-Charles Foix, F-75013 Paris, France
| | - Séverine Samson
- Laboratoire PSITEC (EA 4072), Université de Lille, F-59000 Lille, France
| | - Sophie Dupont
- Epilepsy unit, AP-HP Groupe hospitalier Pitié-Salpêtrière-Charles Foix, F-75013 Paris, France; Inserm U 1127, CNRS UMR 7225, UMR S 1127, Institut du Cerveau et de la Moelle épinière - ICM, Centre de Neuroimagerie de Recherche - CENIR, F-75013 Paris, France; Sorbonne University, UPMC Univ. Paris 06, F-75005 Paris, France; Rehabilitation unit, AP-HP Groupe hospitalier Pitié-Salpêtrière-Charles Foix, F-75013 Paris, France.
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Halby L, Menon Y, Rilova E, Pechalrieu D, Masson V, Faux C, Bouhlel MA, David-Cordonnier MH, Novosad N, Aussagues Y, Samson A, Lacroix L, Ausseil F, Fleury L, Guianvarc'h D, Ferroud C, Arimondo PB. Rational Design of Bisubstrate-Type Analogues as Inhibitors of DNA Methyltransferases in Cancer Cells. J Med Chem 2017; 60:4665-4679. [PMID: 28463515 DOI: 10.1021/acs.jmedchem.7b00176] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Aberrant DNA hypermethylation of promoter of tumor suppressor genes is commonly observed in cancer, and its inhibition by small molecules is promising for their reactivation. Here we designed bisubstrate analogues-based inhibitors, by mimicking each substrate, the S-adenosyl-l-methionine and the deoxycytidine, and linking them together. This approach resulted in quinazoline-quinoline derivatives as potent inhibitors of DNMT3A and DNMT1, some showing certain isoform selectivity. We highlighted the importance of (i) the nature and rigidity of the linker between the two moieties for inhibition, as (ii) the presence of the nitrogen on the quinoline group, and (iii) of a hydrophobic group on the quinazoline. The most potent inhibitors induced demethylation of CDKN2A promoter in colon carcinoma HCT116 cells and its reactivation after 7 days of treatment. Furthermore, in a leukemia cell model system, we found a correlation between demethylation of the promoter induced by the treatment, chromatin opening at the promoter, and the reactivation of a reporter gene.
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Affiliation(s)
- Ludovic Halby
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Yoann Menon
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Elodie Rilova
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Dany Pechalrieu
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Véronique Masson
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Celine Faux
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Mohamed Amine Bouhlel
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, IRCL , 59045 Lille, France
| | - Marie-Hélène David-Cordonnier
- UMR-S1172-JPARC (Jean-Pierre Aubert Research Center), INSERM, University of Lille, Centre Hospitalier Universitaire de Lille, IRCL , 59045 Lille, France
| | - Natacha Novosad
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Yannick Aussagues
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Arnaud Samson
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | | | - Fréderic Ausseil
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Laurence Fleury
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France
| | - Dominique Guianvarc'h
- Laboratoire des BioMolécules, UMR 7203, Université Pierre et Marie Curie-Paris 6-ENS-CNRS , 4, place Jussieu, 75252 Paris Cedex 05, France
| | - Clotilde Ferroud
- Laboratoire de Chimie Moléculaire, CMGPCE, EA7341, Conservatoire National des Arts et Métiers , 2 rue Conté, 75003 Paris, France
| | - Paola B Arimondo
- ETaC, Epigenetic Targeting of Cancer, CRDPF, CNRS-Pierre Fabre USR3388 , 3 Avenue H. Curien, 31035 Toulouse cedex 01, France.,Churchill College , CB3 0DS Cambridge, U.K
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Swenen L, Brichant G, Kaluanga A, Masson V, Nisolle M. [Female Genital Mutilations : the condition in Liege]. Rev Med Liege 2017; 72:25-31. [PMID: 28387074] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Due to current migration flows, the practising obstetrician is likely to encounter parturient women carriers of female genital mutilations (FGM). This article describes the obstetrical complications related to the latter. We compared a group of mutilated patients (n = 69) to a control group (n = 162) and studied the data concerning pregnancy, childbirth, newborn, postpartum and length of hospital stay. Among the mutilated patients, 44% were group B streptococcus carriers against 23 % in the control group (p inferior to 0.01). As regards the perineum, an episiotomy was performed in 31 % of patients in the FGM group versus 35 % of the control group; a tear occurred in 42 % of vaginal deliveries in the FGM group against 26 % in the control group.
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Affiliation(s)
- L Swenen
- Service de Gynécologie, CHR de la Citadelle, Liège, Belgique
| | - G Brichant
- Service de Gynécologie, CHR de la Citadelle, Liège, Belgique
| | - A Kaluanga
- Service de Gynécologie, CHR de la Citadelle, Liège, Belgique
| | - V Masson
- Service de Gynécologie, CHR de la Citadelle, Liège, Belgique
| | - M Nisolle
- Service de Gynécologie, CHR de la Citadelle, Liège, Belgique
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Gregoire JM, Fleury L, Salazar-Cardozo C, Alby F, Masson V, Arimondo PB, Ausseil F. Identification of epigenetic factors regulating the mesenchyme to epithelium transition by RNA interference screening in breast cancer cells. BMC Cancer 2016; 16:700. [PMID: 27581651 PMCID: PMC5006536 DOI: 10.1186/s12885-016-2683-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/05/2016] [Indexed: 01/21/2023] Open
Abstract
Background In breast cancer, the epithelial to mesenchyme transition (EMT) is associated to tumour dissemination, drug resistance and high relapse risks. It is partly controlled by epigenetic modifications such as histone acetylation and methylation. The identification of genes involved in these reversible modifications represents an interesting therapeutic strategy to fight metastatic disease by inducing mesenchymal cell differentiation to an epithelial phenotype. Methods We designed a siRNA library based on chromatin modification-related to functional domains and screened it in the mesenchymal breast cancer cell line MDA-MB-231. The mesenchyme to epithelium transition (MET) activation was studied by following human E-CADHERIN (E-CAD) induction, a specific MET marker, and cell morphology. Candidate genes were validated by studying the expression of several differential marker genes and their impact on cell migration. Results The screen led to the identification of 70 gene candidates among which some are described to be, directly or indirectly, involved in EMT like ZEB1, G9a, SMAD5 and SMARCD3. We also identified the DOT1L as involved in EMT regulation in MDA-MB-231. Moreover, for the first time, KAT5 gene was linked to the maintenance of the mesenchymal phenotype. Conclusions A multi-parametric RNAi screening approach was developed to identify new EMT regulators such as KAT5 in the triple negative breast cancer cell line MDA-MB-231. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2683-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jean-Marc Gregoire
- Unité de Service et de Recherche CNRS-Pierre Fabre n°3388 ETaC, CRDPF, 3 avenue H. Curien, BP 13652, 31035, Toulouse cedex 01, France
| | - Laurence Fleury
- Unité de Service et de Recherche CNRS-Pierre Fabre n°3388 ETaC, CRDPF, 3 avenue H. Curien, BP 13652, 31035, Toulouse cedex 01, France
| | - Clara Salazar-Cardozo
- Unité de Service et de Recherche CNRS-Pierre Fabre n°3388 ETaC, CRDPF, 3 avenue H. Curien, BP 13652, 31035, Toulouse cedex 01, France
| | - Frédéric Alby
- Unité de Service et de Recherche CNRS-Pierre Fabre n°3388 ETaC, CRDPF, 3 avenue H. Curien, BP 13652, 31035, Toulouse cedex 01, France
| | - Véronique Masson
- Unité de Service et de Recherche CNRS-Pierre Fabre n°3388 ETaC, CRDPF, 3 avenue H. Curien, BP 13652, 31035, Toulouse cedex 01, France
| | - Paola Barbara Arimondo
- Unité de Service et de Recherche CNRS-Pierre Fabre n°3388 ETaC, CRDPF, 3 avenue H. Curien, BP 13652, 31035, Toulouse cedex 01, France
| | - Frédéric Ausseil
- Unité de Service et de Recherche CNRS-Pierre Fabre n°3388 ETaC, CRDPF, 3 avenue H. Curien, BP 13652, 31035, Toulouse cedex 01, France.
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Battin M, Sadler L, Masson V, Farquhar C. Neonatal encephalopathy in New Zealand: Demographics and clinical outcome. J Paediatr Child Health 2016; 52:632-6. [PMID: 27148886 DOI: 10.1111/jpc.13165] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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] [Received: 10/05/2015] [Revised: 12/03/2015] [Accepted: 01/07/2016] [Indexed: 11/26/2022]
Abstract
AIM To establish the incidence of moderate to severe neonatal encephalopathy (NE) in term infants from New Zealand and to document demographic characteristics and neonatal outcomes. METHODS Cases were reported monthly via the New Zealand Paediatric Surveillance Unit (NZPSU). Data were collected from paediatricians for neonatal items and lead maternity carers for pregnancy and birth details. Term neonatal deaths in the Perinatal and Maternal Mortality Review Committee dataset that were because of hypoxia and/or neonatal deaths from hypoxic ischaemic encephalopathy were added to the cases identified via the NZPSU, if they had not previously been ascertained. RESULTS For the period January 2010 to December 2012, there were 227 cases, equivalent to a rate of 1.30/1000 term births (95% CI 1.14-1.48). Rates of NE were high in babies of Pacific and Indian mothers but only reached statistical significance for the comparison between Pacific and NZ European. There was also a significant increase in NE rates with increasing deprivation. Resuscitation at birth was initiated for 209 (92.1%) infants with NE. Mechanical ventilation was required, following neonatal unit admission, in 171 (75.3%) infants. Anticonvulsants were used in 157 (69.2%) infants with phenobarbitone (65.6%), phenytoin (14.5%) and benzodiazapines (21.1%), the most common. Cooling was induced in 168 infants (74%) with 145 (86.3%) reported as commenced within a 6-h window. CONCLUSIONS The rate of NE in New Zealand is consistent with reported international rates. Establishing antecedent factors for NE is an important part of improving care, which may inform strategic efforts to decrease rates of NE.
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Affiliation(s)
- M Battin
- Newborn Services, Auckland City Hospital, Auckland, New Zealand
| | - L Sadler
- National Women's Health, Auckland City Hospital, Auckland, New Zealand.,Department of Epidemiology and Biostatistics, Faculty of Medicine and Health Sciences, University of Auckland, Auckland, New Zealand.,Perinatal and Maternal Mortality Review Committee (PMMRC), Health Quality and Safety Commission, Wellington, New Zealand
| | - V Masson
- Perinatal and Maternal Mortality Review Committee (PMMRC), Health Quality and Safety Commission, Wellington, New Zealand
| | - C Farquhar
- National Women's Health, Auckland City Hospital, Auckland, New Zealand.,Perinatal and Maternal Mortality Review Committee (PMMRC), Health Quality and Safety Commission, Wellington, New Zealand.,Department of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand
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11
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Vanhaecke C, Hickman G, Cavelier-Balloy B, Masson V, Duron JB, Gorj M, May P, Schneider P, Vilmer C, Bagot M, Battistella M, Petit A. Plantar keloids: diagnostic and therapeutic issues in six patients. J Eur Acad Dermatol Venereol 2014; 29:1421-6. [PMID: 25088087 DOI: 10.1111/jdv.12625] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 06/06/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND Keloids are benign fibro-proliferative skin lesions that very rarely occur on the soles. Because of their rarity, the diagnosis of plantar keloids can be difficult. We describe the clinical and histopathological characteristics of eight plantar keloids. METHODS All patients presenting with plantar keloids between 2005 and 2012 in our Dermatology unit were retrospectively included. Diagnosis was definitely established by re-reading of pathological slides in all cases. Clinical characteristics, histopathological features, treatments given and their results were collected. RESULTS Six patients were included. Five patients had a single plantar keloid and one had three lesions. They all were of African descent. Only one patient remembered of a previous injury at the site of the keloid. Three patients presented with associated extra-plantar keloids. In four patients, the diagnosis of keloid was not initially suspected clinically or histologically. Re-reading of the clinical photographs showed that the eight plantar keloids shared common morphological features, leading to a distinctive clinical picture, defined by a hardened lesion of rounded or polycyclic shape, with a pink surface crossed by keratotic furrows and the presence of a hyperkeratotic rim. Concerning pathological features, typical hyalinized collagen can be missing and deep fibrosis should not rule out the diagnosis of keloid. Intralesional injection of triamcinolone acetonide and orthopaedic shoes were useful. All patients who had surgical excision presented recurrence. CONCLUSION The knowledge of the clinical features of plantar keloids is helpful to the diagnosis. There is no well-established treatment, but supportive measures are important.
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Affiliation(s)
- C Vanhaecke
- Service de Dermatologie, AP- HP Hôpital Saint Louis, Paris, France
| | - G Hickman
- Service de Dermatologie, AP- HP Hôpital Saint Louis, Paris, France
| | - B Cavelier-Balloy
- Service d'Anatomie Pathologique, AP- HP Hôpital Saint Louis, Paris, France
| | - V Masson
- Service de Chirurgie plastique, AP- HP Hôpital Saint Louis, Paris, France
| | - J-B Duron
- Service de Chirurgie plastique, AP- HP Hôpital Saint Louis, Paris, France
| | - M Gorj
- Service de Chirurgie plastique, AP- HP Hôpital Saint Louis, Paris, France
| | - P May
- Service de Chirurgie plastique, AP- HP Hôpital Saint Louis, Paris, France
| | - P Schneider
- Service de Dermatologie, AP- HP Hôpital Saint Louis, Paris, France
| | - C Vilmer
- Service de Dermatologie, AP- HP Hôpital Saint Louis, Paris, France
| | - M Bagot
- Service de Dermatologie, AP- HP Hôpital Saint Louis, Paris, France
| | - M Battistella
- Service d'Anatomie Pathologique, AP- HP Hôpital Saint Louis, Paris, France
| | - A Petit
- Service de Dermatologie, AP- HP Hôpital Saint Louis, Paris, France
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Rotili D, Tarantino D, Marrocco B, Gros C, Masson V, Poughon V, Ausseil F, Chang Y, Labella D, Cosconati S, Di Maro S, Novellino E, Schnekenburger M, Grandjenette C, Bouvy C, Diederich M, Cheng X, Arimondo PB, Mai A. Properly substituted analogues of BIX-01294 lose inhibition of G9a histone methyltransferase and gain selective anti-DNA methyltransferase 3A activity. PLoS One 2014; 9:e96941. [PMID: 24810902 PMCID: PMC4014597 DOI: 10.1371/journal.pone.0096941] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 04/14/2014] [Indexed: 11/21/2022] Open
Abstract
Chemical manipulations performed on the histone H3 lysine 9 methyltransferases (G9a/GLP) inhibitor BIX-01294 afforded novel desmethoxyquinazolines able to inhibit the DNA methyltransferase DNMT3A at low micromolar levels without any significant inhibition of DNMT1 and G9a. In KG-1 cells such compounds, when tested at sub-toxic doses, induced the luciferase re-expression in a stable construct controlled by a cytomegalovirus (CMV) promoter silenced by methylation (CMV-luc assay). Finally, in human lymphoma U-937 and RAJI cells, the N-(1-benzylpiperidin-4-yl)-2-(4-phenylpiperazin-1-yl)quinazolin-4-amine induced the highest proliferation arrest and cell death induction starting from 10 µM, in agreement with its DNMT3A inhibitory potency.
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Affiliation(s)
- Dante Rotili
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Roma, IT
| | - Domenico Tarantino
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Roma, IT
| | - Biagina Marrocco
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Roma, IT
| | | | | | | | | | - Yanqi Chang
- Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Donatella Labella
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Roma, IT
| | | | - Salvatore Di Maro
- Dipartimento di Farmacia, Università di Napoli “Federico II”, Napoli, IT
| | - Ettore Novellino
- Dipartimento di Farmacia, Università di Napoli “Federico II”, Napoli, IT
| | - Michael Schnekenburger
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer (LBMCC), Luxembourg, Luxembourg
| | - Cindy Grandjenette
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer (LBMCC), Luxembourg, Luxembourg
| | - Celine Bouvy
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer (LBMCC), Luxembourg, Luxembourg
| | - Marc Diederich
- Laboratoire de Biologie Moléculaire et Cellulaire du Cancer (LBMCC), Luxembourg, Luxembourg
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul, Korea
| | - Xiaodong Cheng
- Department of Biochemistry, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | | | - Antonello Mai
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, Roma, IT
- Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza Università di Roma, Roma, IT
- * E-mail:
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13
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Rilova E, Erdmann A, Gros C, Masson V, Aussagues Y, Poughon-Cassabois V, Rajavelu A, Jeltsch A, Menon Y, Novosad N, Gregoire JM, Vispé S, Schambel P, Ausseil F, Sautel F, Arimondo PB, Cantagrel F. Design, synthesis and biological evaluation of 4-amino-N- (4-aminophenyl)benzamide analogues of quinoline-based SGI-1027 as inhibitors of DNA methylation. ChemMedChem 2014; 9:590-601. [PMID: 24678024 PMCID: PMC4506529 DOI: 10.1002/cmdc.201300420] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [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] [Indexed: 01/07/2023]
Abstract
Quinoline derivative SGI-1027 (N-(4-(2-amino-6-methylpyrimidin-4-ylamino)phenyl)-4-(quinolin-4-ylamino)benzamide) was first described in 2009 as a potent inhibitor of DNA methyltransferase (DNMT) 1, 3A and 3B. Based on molecular modeling studies, performed using the crystal structure of Haemophilus haemolyticus cytosine-5 DNA methyltransferase (MHhaI C5 DNMT), which suggested that the quinoline and the aminopyridimine moieties of SGI-1027 are important for interaction with the substrates and protein, we designed and synthesized 25 derivatives. Among them, four compounds—namely the derivatives 12, 16, 31 and 32—exhibited activities comparable to that of the parent compound. Further evaluation revealed that these compounds were more potent against human DNMT3A than against human DNMT1 and induced the re-expression of a reporter gene, controlled by a methylated cytomegalovirus (CMV) promoter, in leukemia KG-1 cells. These compounds possessed cytotoxicity against leukemia KG-1 cells in the micromolar range, comparable with the cytotoxicity of the reference compound, SGI-1027. Structure–activity relationships were elucidated from the results. First, the presence of a methylene or carbonyl group to conjugate the quinoline moiety decreased the activity. Second, the size and nature of the aromatic or heterocycle subsitutents effects inhibition activity: tricyclic moieties, such as acridine, were found to decrease activity, while bicyclic substituents, such as quinoline, were well tolerated. The best combination was found to be a bicyclic substituent on one side of the compound, and a one-ring moiety on the other side. Finally, the orientation of the central amide bond was found to have little effect on the biological activity. This study provides new insights in to the structure-activity relationships of SGI-1027 and its derivative.
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Affiliation(s)
- Elodie Rilova
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Alexandre Erdmann
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Christina Gros
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Véronique Masson
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Yannick Aussagues
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Valérie Poughon-Cassabois
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Arumugam Rajavelu
- Institute of Biochemistry, Faculty of Chemistry, University StuttgartPfaffenwaldring 55, 70569 Stuttgart (Germany)
| | - Albert Jeltsch
- Institute of Biochemistry, Faculty of Chemistry, University StuttgartPfaffenwaldring 55, 70569 Stuttgart (Germany)
| | - Yoann Menon
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Natacha Novosad
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Jean-Marc Gregoire
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Stéphane Vispé
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Philippe Schambel
- Institut de Recherches Pierre Fabre17 Rue Jean Moulin, 81106 Castres Cedex (France)
| | - Fréderic Ausseil
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - François Sautel
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Paola B Arimondo
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
| | - Frédéric Cantagrel
- USR CNRS-Pierre Fabre No. 3388 ETaC, Centre de Recherche et de Développement Pierre Fabre (CRDPF)3 Ave Hubert Curien, 31035 Toulouse Cedex 01 (France) E-mail:
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Emonts P, Masson V, Chantraine F, Kridelka F, Nisolle M. [Addictions and pregnancy : how to ruin a pregnancy]. Rev Med Liege 2013; 68:239-244. [PMID: 23888571] [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
Pregnant women are well aware that any addiction during pregnancy can be harmful to the child. In spite of this knowledge, many continue to smoke, to drink alcohol, to consume illicit drugs or to absorb medicines because these dependences are particularly strong. Tobacco, alcohol, cocaine and ecstasy represent the most dangerous substances as regards foetal damage. The period of pregnancy is the optimal moment to stop these addictions. It is therefore essential to raise awareness among the general public, policy makers, and physicians of the fact that addictions during pregnancy cause a disparity in terms of future health and life expectancy of the unborn child.
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Affiliation(s)
- P Emonts
- Universite de Liege, Chef de Clinique, Service de Gynecologie-Obstetrique, CHU de Liege, site NDB et CHR Citadelle, Belgique.
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15
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Kabro A, Lachance H, Marcoux-Archambault I, Perrier V, Doré V, Gros C, Masson V, Gregoire JM, Ausseil F, Cheishvili D, Laulan NB, St-Pierre Y, Szyf M, Arimondo PB, Gagnon A. Preparation of phenylethylbenzamide derivatives as modulators of DNMT3 activity. Med Chem Commun 2013. [DOI: 10.1039/c3md00214d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Abstract
OBJECTIVE The French Ministry of Health and its regional agencies decided on December 27th, 2010 to develop the ambulatory surgery in the purpose to eliminate 48,000 beds of surgery in France. This evolution, which results from Anglo-Saxon countries, is inevitable in front of the financial deficit of our health insurance. Like the Canadian plastic surgeons, who were forced to it for 7 years, we wanted to study the feasibility of an ambulatory care of the reduction mammaplasties in a hospitalo-university department. METHODS Between January and June, 2012, 25 patients, of less than 65 years old, were operated for a reduction mammaplasty scheduled in ambulatory. None presented particular anesthetic risk. All lived unless 1h of the hospital, went out accompanied, were revised the day after the intervention, then in a usual way. Our criterias of evaluation were the following ones: global satisfaction of the care in ambulatory, weight of glandular resection, postoperative complications, rate of readmission. RESULTS The average age of the patients was 32 years (19-56 years). The average weight of resection was 400g by breast (140-1000g). Twenty patients went out on evening (80%). Among them, 19 (95%) expressed their satisfaction and would accept again this intervention in ambulatory. No major complication arose in this series. Five other patients saw their release repelled by the anaesthetists for the following motives: score of Aldrete lower than 9, pain not relieved by the analgesic (I or II), nausea and uncontrollable vomitings. CONCLUSION This first clinical study realized in France, confirms that when certain conditions are filled, the reduction mammaplasty can be realized in ambulatory with complete safety. The rate of satisfaction shows a very strong support of the patients for the ambulatory care.
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Affiliation(s)
- M Guibert
- Service de chirurgie plastique et reconstructrice, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France.
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17
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Moreau P, Ruiz L, Raimbault T, Vertès F, Cordier MO, Gascuel-Odoux C, Masson V, Salmon-Monviola J, Durand P. Modeling the potential benefits of catch-crop introduction in fodder crop rotations in a Western Europe landscape. Sci Total Environ 2012; 437:276-284. [PMID: 22944220 DOI: 10.1016/j.scitotenv.2012.07.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/27/2012] [Accepted: 07/27/2012] [Indexed: 06/01/2023]
Abstract
Among possible mitigation options to reduce agricultural-borne nitrate fluxes to water bodies, introduction of catch crop before spring crops is acknowledged as a cost-efficient solution at the plot scale, but it was rarely assessed at the catchment level. This study aims to evaluate a set of catch crop implantation scenarios and their consequences in a coastal catchment prone to eutrophication. The objectives are (i) to discuss the potential benefits of catch crop introduction taking into account the limitations due to the physiographic and agricultural context of the area (ii) to propose a multicriteria classification of these scenarios as a basis for discussion with stakeholders. We used the distributed agro-hydrological model TNT2 to simulate 25 scenarios of catch crop management, differing in length of catch crop growing period, place in the crop rotation and residue management. The scenarios were classified considering the variations in main crop yields and either nitrogen fluxes in stream or the global nitrogen mass balance at the catchment level. The simulations showed that in the catchment studied, little improvement can be expected from increasing the catch crop surface. Catch crop cultivation was always beneficial to reduce nitrogen losses, but led to adverse effects on main crop yields in some cases. Among the scenarios involving additional catch crop surface, introducing catch crop between two winter cereals appeared as the most promising. The classification of scenarios depended on the chosen criteria: when considering only the reduction of nitrogen fluxes in streams, exporting catch crop residues was the most efficient while when considering the global nitrogen mass balance, soil incorporation of catch crop residues was the most beneficial. This work highlights the interest, while using integrated models, of assessing simulated scenarios with multicriteria approach to provide stakeholder with a picture as complete as possible of the consequences of prospective policies.
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Affiliation(s)
- P Moreau
- INRA, UMR1069 Sol Agro et hydrosystème Spatialisation, F-35000 Rennes, France
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Ceysens G, Chaumont D, de Jonghe C, Fivet R, Hernandez A, Masson V, Mauroy MC, Morales I, Alexander S. [Not Available]. Rev Med Brux 2012; 33:503-504. [PMID: 23167144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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Navarro V, Clemenceau S, Habert MO, Hasboun D, Nguyen-Michel VH, Masson V, Plaisant O, Samson S, Dupont S, Baulac M, Adam C. [Epilepsy surgery: when thinking about? Who are the good candidates?]. Presse Med 2011; 40:293-300. [PMID: 21310584 DOI: 10.1016/j.lpm.2011.01.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Accepted: 01/18/2011] [Indexed: 11/15/2022] Open
Abstract
Epilepsy surgery concerns any patient with pharmacoresistant partial epilepsy, responsible for disability. Children and adult patients can be candidates for epilepsy surgery. A presurgical evaluation, adapted to each patient, must identify the most precisely the cortical area, where the seizures originate, using converging data: the clinical and electroencephalographic semiology of the seizures, the structural and sometimes functional brain imagings, and evaluate if the removal of the epileptogenic focus may induce a neurological or cognitive deficit, using neuropsychological tests and sometimes functional brain imagings. Such therapeutical strategy should be evoked as soon as possible in patients for whom the epilepsy becomes pharmacoresistant, and these patients should be oriented in specialized centres. The results of epilepsy surgery vary according to the lobar origin of the epileptogenic focus and to the existence of a visible lesion on brain MRI. A multidisciplinary evaluation of the benefits and risks should be presented to the patient. Results of the surgery are usually excellent when a focus is clearly identified and the neuropsychological tests did not predict a deficit.
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Affiliation(s)
- Vincent Navarro
- AP-HP, hôpital de la Pitié-Salpêtrière, unité d'épilepsie, 75651 Paris cedex 13, France.
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Masson V, Petit P, Foidart JM. [Non-observance and therapeutic inertia in obstetrics]. Rev Med Liege 2010; 65:395-398. [PMID: 20684426] [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: 05/29/2023]
Abstract
Observance around pregnancy includes two parts: what can be done before conception and what must be done during pregnancy. Preconception care, if efficaciously performed, offerss real benefits for foetal and child development. Its efficacy will depends on the involvement and motivation of physicians and particularly also on the patient's observance. In this article we summarize essential pieces of advice to be given to each patient before pregnancy. Therapeutic inertia in obstetrics presents two differents aspects: on the one hand, the delay to initiate a therapeutic strategy when a complication arises such as a postpartum hemorrhage; on the other hand, the continuation of obsolete practices, such as the therapy of uterine hypersystolia.
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Affiliation(s)
- V Masson
- Service de Gynécologie-Obstétrique, CHR de la Citadelle, Liège, Belgique
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Drobinski P, Saïd F, Ancellet G, Arteta J, Augustin P, Bastin S, Brut A, Caccia JL, Campistron B, Cautenet S, Colette A, Coll I, Corsmeier U, Cros B, Dabas A, Delbarre H, Dufour A, Durand P, Guénard V, Hasel M, Kalthoff N, Kottmeier C, Lasry F, Lemonsu A, Lohou F, Masson V, Menut L, Moppert C, Peuch VH, Puygrenier V, Reitebuch O, Vautard R. Regional transport and dilution during high‐pollution episodes in southern France: Summary of findings from the Field Experiment to Constraint Models of Atmospheric Pollution and Emissions Transport (ESCOMPTE). ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd007494] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Drobinski
- Institut Pierre‐Simon Laplace, Service d'Aéronomie Université Pierre et Marie Curie Paris France
| | - F. Saïd
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - G. Ancellet
- Institut Pierre‐Simon Laplace, Service d'Aéronomie Université Pierre et Marie Curie Paris France
| | - J. Arteta
- Laboratoire de Météorologie Physique Université Blaise Pascal Aubière France
| | - P. Augustin
- Laboratoire de Physico‐Chimie de l'Atmosphère Université du Littoral‐Côte d'Opale Dunkerque France
| | - S. Bastin
- Institut Pierre‐Simon Laplace, Service d'Aéronomie Université Pierre et Marie Curie Paris France
| | - A. Brut
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - J. L. Caccia
- Laboratoire de Sondages Electromagnétiques de l'Environnement Terrestre Université du Sud Toulon‐Var Toulon France
| | - B. Campistron
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - S. Cautenet
- Laboratoire de Météorologie Physique Université Blaise Pascal Aubière France
| | - A. Colette
- Institut Pierre‐Simon Laplace, Service d'Aéronomie Université Pierre et Marie Curie Paris France
| | - I. Coll
- Faculté des Sciences et Technologie Laboratoire Inter‐Universitaire des Systèmes Atmosphériques Créteil France
| | - U. Corsmeier
- Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe Universität Karlsruhe Karlsruhe Germany
| | - B. Cros
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - A. Dabas
- Centre National de Recherches Météorologiques Météo‐France Toulouse France
| | - H. Delbarre
- Laboratoire de Physico‐Chimie de l'Atmosphère Université du Littoral‐Côte d'Opale Dunkerque France
| | - A. Dufour
- Centre National de Recherches Météorologiques Météo‐France Toulouse France
| | - P. Durand
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - V. Guénard
- Laboratoire de Sondages Electromagnétiques de l'Environnement Terrestre Université du Sud Toulon‐Var Toulon France
| | - M. Hasel
- Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe Universität Karlsruhe Karlsruhe Germany
| | - N. Kalthoff
- Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe Universität Karlsruhe Karlsruhe Germany
| | - C. Kottmeier
- Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe Universität Karlsruhe Karlsruhe Germany
| | - F. Lasry
- Faculté des Sciences et Technologie Laboratoire Inter‐Universitaire des Systèmes Atmosphériques Créteil France
| | - A. Lemonsu
- Centre National de Recherches Météorologiques Météo‐France Toulouse France
| | - F. Lohou
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - V. Masson
- Centre National de Recherches Météorologiques Météo‐France Toulouse France
| | - L. Menut
- Laboratoire de Météorologie Dynamique Institut Pierre‐Simon Laplace, École Polytechnique Palaiseau France
| | - C. Moppert
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - V. H. Peuch
- Centre National de Recherches Météorologiques Météo‐France Toulouse France
| | - V. Puygrenier
- Laboratoire d'Aérologie Université Paul Sabatier Toulouse France
| | - O. Reitebuch
- Institut für Physik der Atmosphäre Deutsches Zentrum für Luft‐ und Raumfahrt Oberpfaffenhofen Germany
| | - R. Vautard
- Laboratoire des Sciences du Climat et de l'Environnement Institut Pierre Simon Laplace, Commisariat à l'Énergie Atomique Gif‐sur‐Yvette France
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Fonrose X, Ausseil F, Soleilhac E, Masson V, David B, Pouny I, Cintrat JC, Rousseau B, Barette C, Massiot G, Lafanechère L. Parthenolide inhibits tubulin carboxypeptidase activity. Cancer Res 2007; 67:3371-8. [PMID: 17409447 DOI: 10.1158/0008-5472.can-06-3732] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [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: 11/16/2022]
Abstract
Microtubules are centrally involved in cell division, being the principal components of mitotic spindle. Tubulin, the constituent of microtubules, can be cyclically modified on its alpha-subunit by enzymatic removal of the COOH-terminal tyrosine residue by an ill-defined tubulin carboxypeptidase (TCP) and its readdition by tubulin tyrosine ligase (TTL). We and others have previously shown that suppression of TTL and resulting accumulation of detyrosinated tubulin are frequent in human cancers of poor prognosis. Explanations for the involvement of TTL and detyrosinated tubulin in tumor progression arise from the recent discovery that tubulin detyrosination leads to CAP-Gly protein mislocalization, which correlates with defects in spindle positioning during mitosis. Impaired control of spindle positioning is one factor favoring tumor invasiveness. Thus, TCP could be a target for developing novel therapeutic strategies against advanced stages of cancers. Inhibitors of TCP, by reversing abnormal detyrosinated tubulin accumulation in tumor cells, could impair tumor progression. TCP has never been isolated and this has hampered search of specific inhibitors. In this article, we describe a cell-based assay of TCP activity and its use to screen a library of natural extracts for their inhibitory potency. This led to the isolation of two sesquiterpene lactones. We subsequently found that parthenolide, a structurally related compound, can efficiently inhibit TCP. This inhibitory activity is a new specific property of parthenolide independent of its action on the nuclear factor-kappaB pathway. Parthenolide is also known for its anticancer properties. Thus, TCP inhibition could be one of the underlying mechanisms of these anticancer properties.
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Affiliation(s)
- Xavier Fonrose
- Centre de Criblage pour Molécules Bio-Actives, institut de Recherches en Technologies et Sciences pour le Vivant, Commissariat à l'Energie Atomique-Grenoble, Grenoble, France
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Mandeau A, Masson V, Menou JL, Debitus C. 24-Methyl stigmasterol, an unusual sterol from the marine sponge Psammocinia bulbosa Bergquist, 1995. BIOCHEM SYST ECOL 2006. [DOI: 10.1016/j.bse.2005.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Masson V. [Roles of serine proteases and matrix metalloproteinases in tumor invasion and angiogenesis]. Bull Mem Acad R Med Belg 2006; 161:320-6. [PMID: 17283905] [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: 05/13/2023]
Abstract
The remodelling of extracellular matrix and angiogenesis represent two essential processes for tumor growth and metastatic dissemination. These phenomena imply many interactions between tumor cells and host cells via action of various proteases including metalloproteinases (MMPs) whose activity is controlled by TIMPs and serine proteases (tissue type Plasminogen Activator (tPA), urokinase type Plasminogen Activator (uPA) and plasmin) inhibited in particular by PAI-1 (Plasminogen Activator Inhibitor- 1). Evolution of tumors depends on the joint action of these enzymes, as well as precise balance between these proteases and their physiological inhibitors. Proteases regulate the fate and activity of many proteins by controlling appropriate intra- or extracellular localization; shedding from cell surfaces ; activation or inactivation of proteases and other enzymes, cytokines, hormones or growth factors and exposure of cryptic neoproteins. Hence, proteases initiate, modulate and terminate a wide range of important cellular functions by processing bioactive molecules an thereby control essential biological processes, such as DNA replication, cell-cycle progression, cell proliferation, differentiation and migration, morphogenesis and tissue remodelling, neuronal outgrowth, haemostasis, wound healing, immunity, angiogenesis and apoptosis. Work completed has for objective to elucidate the specific part played by serine proteases and MMPS produced by the host cells in the processes of tumor growth and angiogenesis. By using an original model of transplantation of malignant murine keratinocytes (PDVA cell line) into deficient mice (-/-) and wild type mice (+/+), we showed the essential proteolytic role of PAI-1 produced by host cells in the tumor progression and angiogenesis. This mechanism of PAI-1 action was confirmed by using the model in vitro aorta rings. By using deficient mice for one or two MMPs combined (MMP-2, MMP-3, MMP-9, MMP-11, MMP-2&9, MMP3&9), we demonstrated that only the combined deficiency of MMP-2 and -9 showed an absence of tumor invasion and angiogenesis. These data suggest the existence of compensatory mechanisms of a MMP by another MMP or another proteolytic way. These phenomena of redundancy are to be known and detailed to elaborate in a near future, the development of specific inhibitors of MMPS.
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Affiliation(s)
- V Masson
- Laboratoire de Biologie des Tumeurs et du Développement, U.Lg
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Frankenne F, Noel A, Bajou K, Sounni NE, Goffin F, Masson V, Munaut C, Remacle A, Foidart JM. Molecular interactions involving urokinase plasminogen activator (uPA), its receptor (uPAR) and its inhibitor, plasminogen activator inhibitor-1 (PAI-1), as new targets for tumour therapy. ACTA ACUST UNITED AC 2005. [DOI: 10.1517/14728222.3.3.469] [Citation(s) in RCA: 4] [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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28
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Masson V, de la Ballina LR, Munaut C, Wielockx B, Jost M, Maillard C, Blacher S, Bajou K, Itoh T, Itohara S, Werb Z, Libert C, Foidart JM, Noël A. Contribution of host MMP-2 and MMP-9 to promote tumor vascularization and invasion of malignant keratinocytes. FASEB J 2004; 19:234-6. [PMID: 15550552 PMCID: PMC2771171 DOI: 10.1096/fj.04-2140fje] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.0] [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] [Indexed: 01/20/2023]
Abstract
The matrix metalloproteinases (MMPs) play a key role in normal and pathological angiogenesis by mediating extracellular matrix degradation and/or controlling the biological activity of growth factors, chemokines, and/or cytokines. Specific functions of individual MMPs as anti- or proangiogenic mediators remain to be elucidated. In the present study, we assessed the impact of single or combined MMP deficiencies in in vivo and in vitro models of angiogenesis (malignant keratinocyte transplantation and the aortic ring assay, respectively). MMP-9 was predominantly expressed by neutrophils in tumor transplants, whereas MMP-2 and MMP-3 were stromal. Neither the single deficiency of MMP-2, MMP-3, or MMP-9, nor the combined absence of MMP-9 and MMP-3 did impair tumor invasion and vascularization in vivo. However, there was a striking cooperative effect in double MMP-2:MMP-9-deficient mice as demonstrated by the absence of tumor vascularization and invasion. In contrast, the combined lack of MMP-2 and MMP-9 did not impair the in vitro capillary outgrowth from aortic rings. These results point to the importance of a cross talk between several host cells for the in vivo tumor promoting and angiogenic effects of MMP-2 and MMP-9. Our data demonstrate for the first time in an experimental model that MMP-2 and MMP-9 cooperate in promoting the in vivo invasive and angiogenic phenotype of malignant keratinocytes.
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Affiliation(s)
- Véronique Masson
- Laboratory of Tumor and Development Biology, University of Liège, Liège, Belgium
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Rakic JM, Maillard C, Jost M, Bajou K, Masson V, Devy L, Lambert V, Foidart JM, Noël A. Role of plasminogen activator-plasmin system in tumor angiogenesis. Cell Mol Life Sci 2003; 60:463-73. [PMID: 12737307 DOI: 10.1007/s000180300039] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.2] [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: 10/26/2022]
Abstract
New blood formation or angiogenesis has become a key target in therapeutic strategies aimed at inhibiting tumor growth and other diseases associated with neovascularization. Angiogenesis is associated with important extracellular remodeling involving different proteolytic systems among which the plasminogen system plays an essential role. It belongs to the large serine proteinase family and can act directly or indirectly by activating matrix metalloproteinases or by liberating growth factors and cytokines sequestered within the extracellular matrix. Migration of endothelial cells is associated with significant upregulation of proteolysis and, conversely, immunoneutralization or chemical inhibition of the system reduces angiogenesis in vitro. On the other hand, genetically altered mice developed normally without overt vascular anomalies indicating the possibility of compensation by other proteases in vivo. Nevertheless, they have in some experimental settings revealed unanticipated roles for previously characterized proteinases or their inhibitors. In this review, the complex mechanisms of action of the serine proteases in pathological angiogenesis are summarized alongside possible therapeutic applications.
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Affiliation(s)
- J M Rakic
- Department of Ophthalmology, CHU, Sart-Tilman, 4000 Liège, Belgium
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Camus D, Dutoit E, Masson V, Inglebert P, Delhaes L. [Clinical studies using the combination atovaquone-proguanil as malaria prophylaxis in non-immune adult and child travelers]. Med Trop (Mars) 2002; 62:225-8. [PMID: 12244915] [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: 04/19/2023]
Abstract
Prophylaxis for short-term travel in malaria-endemic areas can be difficult for two reasons. The first is that currently available antimalarial drugs are becoming less effective because of the ability of the parasite to adapt to drug pressure. The second involves poor compliance with chemoprophylactic regimens due to the highly restrictive conditions of administration and adverse drug side-effects, especially in "healthy" subjects. The combination of atovaquone/proguanil (Malarone) could provide an answer to both these problems since it is not only effective on multiresistant strains of Plasmodium falciparum but also simplifies the conditions of administration and shows good tolerance in adults and children.
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Affiliation(s)
- D Camus
- Service de Parasitologie-Mycologie, CH et U de Lille, 1 place de Verdun, 59037 Lille, France.
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Vimeux F, Masson V, Delaygue G, Jouzel J, Petit JR, Stievenard M. A 420,000 year deuterium excess record from East Antarctica: Information on past changes in the origin of precipitation at Vostok. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2001jd900076] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bajou K, Devy L, Masson V, Albert V, Frankenne F, Noël A, Foidart JM. [Role of plasminogen activator inhibitor type 1 in tumor angiogenesis]. Therapie 2001; 56:465-72. [PMID: 11806282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The plasminogen/plasmin system plays a key role in cancer progression, presumably via mediating extracellular matrix degradation and tumour cell migration. High levels of components of the plasminogen activation system, and paradoxically also its inhibitor, plasminogen activator inhibitor 1 (PAI-1), have been correlated with a poor prognosis for patients with cancers of different types. Recent findings clearly suggest that PAI-1 is essential for capillary sprouting during tumour angiogenesis. Moreover, there is accumulating evidence that both the urokinase receptor and PAI-1 are multifunctional proteins involved not only in extracellular matrix proteolysis but also in cellular adhesion and migration through their binding site for vitronectin. The understanding of whether PAI-1 plays a regulatory role in angiogenesis by tightly controlling proteolytic activity or by influencing cell migration could allow a new anti-angiogenic approach for tumour therapy.
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Affiliation(s)
- K Bajou
- Laboratoire de Biologie des Tumeurs et du Développement, Université de Liège, Tour de Pathologie (B23), Sart-Tilman, B-4000 Liège, Belgique
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Noel A, Albert V, Bajou K, Bisson C, Devy L, Frankenne F, Maquoi E, Masson V, Sounni NE, Foidart JM. New functions of stromal proteases and their inhibitors in tumor progression. Surg Oncol Clin N Am 2001; 10:417-32, x-xi. [PMID: 11382595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Acquisition of invasive metastatic potential through protease expression is a key event in tumor progression. In carcinomas, the production of metalloproteinases and serine proteinases is regulated by a cross talk between stromal cells and cancer cells. Paradoxically, high rather than low levels of their inhibitors predict poor survival of patients suffering from a variety of cancers. Recent observations suggest a much more complex role of these inhibitors in tumor progression than expected initially.
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Affiliation(s)
- A Noel
- Laboratory of Tumor and Developmental Biology, University of Liege, Tour de Pathologie, Liege, Belgium
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Bajou K, Masson V, Gerard RD, Schmitt PM, Albert V, Praus M, Lund LR, Frandsen TL, Brunner N, Dano K, Fusenig NE, Weidle U, Carmeliet G, Loskutoff D, Collen D, Carmeliet P, Foidart JM, Noël A. The plasminogen activator inhibitor PAI-1 controls in vivo tumor vascularization by interaction with proteases, not vitronectin. Implications for antiangiogenic strategies. J Cell Biol 2001; 152:777-84. [PMID: 11266468 PMCID: PMC2195770 DOI: 10.1083/jcb.152.4.777] [Citation(s) in RCA: 232] [Impact Index Per Article: 10.1] [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] [Indexed: 11/22/2022] Open
Abstract
The plasminogen (Plg)/plasminogen activator (PA) system plays a key role in cancer progression, presumably via mediating extracellular matrix degradation and tumor cell migration. Consequently, urokinase-type PA (uPA)/plasmin antagonists are currently being developed for suppression of tumor growth and angiogenesis. Paradoxically, however, high levels of PA inhibitor 1 (PAI-1) are predictive of a poor prognosis for survival of patients with cancer. We demonstrated previously that PAI-1 promoted tumor angiogenesis, but by an unresolved mechanism. We anticipated that PAI-1 facilitated endothelial cell migration via its known interaction with vitronectin (VN) and integrins. However, using adenoviral gene transfer of PAI-1 mutants, we observed that PAI-1 promoted tumor angiogenesis, not by interacting with VN, but rather by inhibiting proteolytic activity, suggesting that excessive plasmin proteolysis prevents assembly of tumor vessels. Single deficiency of uPA, tissue-type PA (tPA), uPA receptor, or VN, as well as combined deficiencies of uPA and tPA did not impair tumor angiogenesis, whereas lack of Plg reduced it. Overall, these data indicate that plasmin proteolysis, even though essential, must be tightly controlled during tumor angiogenesis, probably to allow vessel stabilization and maturation. These data provide insights into the clinical paradox whereby PAI-1 promotes tumor progression and warrant against the uncontrolled use of uPA/plasmin antagonists as tumor angiogenesis inhibitors.
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Affiliation(s)
- Khalid Bajou
- Laboratory of Tumor and Developmental Biology, University of Liège, Tour de Pathologie (B23), B-4000 Liège, Belgium
| | - Véronique Masson
- Laboratory of Tumor and Developmental Biology, University of Liège, Tour de Pathologie (B23), B-4000 Liège, Belgium
| | - Robert D. Gerard
- Center for Transgene Technology and Gene Therapy, Flanders Interuniversity Institute for Biotechnology, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Petra M. Schmitt
- Department of Vascular Biology, The Scripps Research Institute, La Jolla, California 92037
| | - Valérie Albert
- Laboratory of Tumor and Developmental Biology, University of Liège, Tour de Pathologie (B23), B-4000 Liège, Belgium
| | - Michael Praus
- Center for Transgene Technology and Gene Therapy, Flanders Interuniversity Institute for Biotechnology, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Leif R. Lund
- Finsen Laboratory, Rigshospitalet, DK-2100 Copenhagen, Denmark
| | | | - Nils Brunner
- Finsen Laboratory, Rigshospitalet, DK-2100 Copenhagen, Denmark
| | - Keld Dano
- Finsen Laboratory, Rigshospitalet, DK-2100 Copenhagen, Denmark
| | - Norbert E. Fusenig
- Division of Carcinogenesis and Differentiation, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | | | - Geert Carmeliet
- Laboratory of Experimental Medicine and Endocrinology (LEGENDO), Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - David Loskutoff
- Department of Vascular Biology, The Scripps Research Institute, La Jolla, California 92037
| | - Desiré Collen
- Center for Transgene Technology and Gene Therapy, Flanders Interuniversity Institute for Biotechnology, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Peter Carmeliet
- Center for Transgene Technology and Gene Therapy, Flanders Interuniversity Institute for Biotechnology, Katholieke Universiteit Leuven, B-3000 Leuven, Belgium
| | - Jean Michel Foidart
- Laboratory of Tumor and Developmental Biology, University of Liège, Tour de Pathologie (B23), B-4000 Liège, Belgium
| | - Agnès Noël
- Laboratory of Tumor and Developmental Biology, University of Liège, Tour de Pathologie (B23), B-4000 Liège, Belgium
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Chi DS, Venkatraman ES, Masson V, Hoskins WJ. The ability of preoperative serum CA-125 to predict optimal primary tumor cytoreduction in stage III epithelial ovarian carcinoma. Gynecol Oncol 2000; 77:227-31. [PMID: 10785469 DOI: 10.1006/gyno.2000.5749] [Citation(s) in RCA: 162] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE The aim of this study was to determine the ability of preoperative serum CA-125 to predict optimal primary tumor cytoreduction in patients with Stage III epithelial ovarian carcinoma. METHODS We performed a retrospective chart review of 100 consecutive patients with Stage III ovarian carcinoma who had a serum CA-125 drawn prior to primary cytoreductive surgery. We used a receiver operating characteristic curve to determine the CA-125 level with the maximal prognostic power in predicting optimal versus suboptimal cytoreduction. RESULTS The median CA-125 level for the 100 patients was 819 U/ml (range 5.6-26,200 U/ml). Optimal cytoreduction (diameter of largest residual tumor nodule < or =1 cm) was obtained in 45 cases (45%). The probability of performing optimal cytoreduction decreased with increasing CA-125 levels. A preoperative CA-125 level of 500 U/ml was identified as the value with the most predictive power. Optimal cytoreduction was achieved in 33 of the 45 cases (73%) with a CA-125 less than 500 U/ml compared to only 12 of the 55 cases (22%) with a CA-125 greater than 500 U/ml. Using a threshold level of 500 U/ml, the preoperative serum CA-125 level was able to predict optimal versus suboptimal cytoreduction with a sensitivity of 78%, specificity of 73%, positive predictive value of 78%, and negative predictive value of 73%. CONCLUSION The probability of performing optimal cytoreduction in patients with Stage III ovarian carcinoma and a preoperative CA-125 greater than 500 U/ml was approximately one in five. These patients may be candidates for initial laparoscopic evaluation to obtain a confirmatory tissue diagnosis and to determine resectability.
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Affiliation(s)
- D S Chi
- Gynecology Service, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA
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Munaut C, Cataldo D, Masson V, Noël A, Foidart JM. La Mmp-9 : une métalloprotéase à facettes multiples. Med Sci (Paris) 2000. [DOI: 10.4267/10608/1693] [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] Open
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Vimeux F, Masson V, Jouzel J, Stievenard M, Petit JR. Glacial–interglacial changes in ocean surface conditions in the Southern Hemisphere. Nature 1999. [DOI: 10.1038/18860] [Citation(s) in RCA: 218] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Bajou K, Noël A, Gerard RD, Masson V, Brunner N, Holst-Hansen C, Skobe M, Fusenig NE, Carmeliet P, Collen D, Foidart JM. Absence of host plasminogen activator inhibitor 1 prevents cancer invasion and vascularization. Nat Med 1998; 4:923-8. [PMID: 9701244 DOI: 10.1038/nm0898-923] [Citation(s) in RCA: 452] [Impact Index Per Article: 17.4] [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: 02/08/2023]
Abstract
Acquisition of invasive/metastatic potential through protease expression is an essential event in tumor progression. High levels of components of the plasminogen activation system, including urokinase, but paradoxically also its inhibitor, plasminogen activator inhibitor 1 (PAI1), have been correlated with a poor prognosis for some cancers. We report here that deficient PAI1 expression in host mice prevented local invasion and tumor vascularization of transplanted malignant keratinocytes. When this PAI1 deficiency was circumvented by intravenous injection of a replication-defective adenoviral vector expressing human PAI1, invasion and associated angiogenesis were restored. This experimental evidence demonstrates that host-produced PAI is essential for cancer cell invasion and angiogenesis.
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Affiliation(s)
- K Bajou
- Laboratory of Tumor and Developmental Biology, University of Liège, Belgium
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Moulin C, Lambert CE, Dayan U, Masson V, Ramonet M, Bousquet P, Legrand M, Balkanski YJ, Guelle W, Marticorena B, Bergametti G, Dulac F. Satellite climatology of African dust transport in the Mediterranean atmosphere. ACTA ACUST UNITED AC 1998. [DOI: 10.1029/98jd00171] [Citation(s) in RCA: 300] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Masson V. Nurse, heal thyself. Nurs Spectr (Wash D C) 1998; 8:15. [PMID: 10542704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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41
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Pilette C, Masson V, Oberti F, Person B, Caillaud B, Chauvigne P, Calès P. [Cost of hemostatic treatment of hemorrhage due to esophageal varices rupture]. Gastroenterol Clin Biol 1998; 22:244-5. [PMID: 9762199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Masson V. Bodies of knowledge. Nurs Health Care Perspect 1997; 18:291. [PMID: 9407849] [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: 02/05/2023]
Abstract
I learned the hard way, the old-fashioned way. I did my first pelvic exam on a colleague, who then did her first on me. We were terrified amateurs, willing to endure all just to get through. "You did great!" we congratulated each other, masking the inevitable discomfort with hearty words of encouragement. I did my second pelvic exam on a patient. What that patient experienced, I'll never know, because she didn't tell and I didn't ask. It took a year or two for me to begin to feel comfortable with the procedure and more years to feel skilled at it. And still I couldn't gauge my patient's experience. I'd say, casually, "You okay?" as I inserted the speculum. She'd say "Uh huh." Sometimes she convinced me, sometimes not.
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Masson V. Nursing creativity. Nurs Health Care Perspect 1997; 18:179. [PMID: 9341245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Masson V. Art of the paradigm shift. Nurs Health Care Perspect 1997; 18:123. [PMID: 9197637] [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: 02/04/2023]
Abstract
How long has it been since you've had a good paradigm shift? No, it's nothing you can plan. Nothing you can simply tick off that perennial list of To Do's tucked away in your pocket or some unoccupied sulcus of your brain. Paradigm shifts simply happen when you are on a journey of discovery. Once they happen, they change forever the way you look at the world.
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Masson V. Art in practice. The New Leaf Project. N HC Perspect Community 1997; 18:91. [PMID: 9205272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Abstract
Polymeric vectors and especially poly(epsilon-caprolactone) nanoparticles have already shown promising results in the optimization of the ophthalmic bioavailability of drugs. Any formulation instilled in the eye must be sterile, and preferentially isotonic. Poly(epsilon-caprolactone) nanospheres were thus formulated with Synperonic PE/F68, Synperonic PE/F127, or Cremophor RH40. A tonicity agent, a preservative and, in some cases, a viscosifiant were then added. The pH was finally adjusted to pH 4 or buffered to pH 7. Different sterilization processes were studied to investigate their influence on the physicochemical characteristics of vectors. Autoclaving did not induce any modification on polymer molecular weight or Synperonic nanospheres diameter, but catalysed some reactions with surfactants and tonicity agents. This method could thus be used if the nanosphere excipients are chosen with care. gamma radiation induced preservative degradation and viscosifiant depolymerization. A cross-linking of poly(epsilon-caprolactone) chains was observed, as reflected by a sharp increase of its molecular weight. However, no variation of the mean particle size was detected. Finally, sterile filtration was the only process which ensured the conservation of physicochemical integrity of nanospheres. This process was successfully applied on non-viscosified vectors with a sufficiently small diameter.
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Affiliation(s)
- V Masson
- Laboratoire Chauvin S.A., Montpellier, France
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47
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Masson V. RN entrepreneurs launch nursing notecards. Nurs Spectr (Wash D C) 1996; 6:6. [PMID: 9434366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Masson V. Alternative and complementary. N HC Perspect Community 1996; 17:283. [PMID: 9086998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Masson V. Art in practice. Healer's apprentice. N HC Perspect Community 1996; 17:263. [PMID: 8945225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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50
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Masson V. Art in practice. Skill. N HC Perspect Community 1996; 17:203. [PMID: 8900754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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