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Dufour J, Choquet S, Hoang-Xuan K, Schmitt A, Ahle G, Houot R, Taillandier L, Gressin R, Casasnovas O, Marolleau JP, Tamburini J, Serrier C, Perez E, Paillassa J, Gyan E, Chauchet A, Ursu R, Kas A, Soussain C, Houillier C. Systemic relapses of primary CNS lymphomas (PCNSL): a LOC network study. Ann Hematol 2023; 102:1159-1169. [PMID: 36991231 DOI: 10.1007/s00277-023-05108-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 01/19/2023] [Indexed: 03/31/2023]
Abstract
Primary central nervous system lymphomas (PCNSLs) classically remain confined within the CNS throughout their evolution for unknown reasons. Our objective was to analyse the rare extracerebral relapses of PCNSL in a nationwide population-based study. We retrospectively selected PCNSL patients who experienced extracerebral relapse during their follow-up from the French LOC database. Of the 1968 PCNSL included in the database from 2011, 30 (1.5%, median age 71 years, median KPS 70) presented an extracerebral relapse, either pure (n = 20) or mixed (both extracerebral and in the CNS) (n = 10), with a histological confirmation in 20 cases. The median delay between initial diagnosis and systemic relapse was 15.5 months [2-121 months]. We found visceral (n = 23, 77%), including testis in 5 (28%) men and breast in 3 (27%) women, lymph node (n = 12, 40%), and peripheral nervous system (PNS) (n = 7, 23%) involvement. Twenty-seven patients were treated with chemotherapy, either with only systemic targets (n = 7) or mixed systemic and CNS targets (n = 20), 4 were consolidated by HCT-ASCT. After systemic relapse, the median progression-free survival and overall survival (OS) were 7 and 12 months, respectively. KPS > 70 and pure systemic relapses were significantly associated with higher OS. Extracerebral PCNSL relapses are rare, mainly extranodal, and frequently involve the testis, breast, and PNS. The prognosis was worse in mixed relapses. Early relapses raise the question of misdiagnosed occult extracerebral lymphoma at diagnostic workup that should systematically include a PET-CT. Paired tumour analysis at diagnosis/relapse would provide a better understanding of the underlying molecular mechanisms.
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Affiliation(s)
- J Dufour
- Hôpital Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, APHP, Sorbonne Université, IHU, ICM, Paris, France
| | - S Choquet
- Hôpital Pitié-Salpêtrière, Service d'Hématologie clinique, Paris, France
| | - K Hoang-Xuan
- Hôpital Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, APHP, Sorbonne Université, IHU, ICM, Paris, France
| | - A Schmitt
- Institut de Bergonie, Service d'Hématologie, Bordeaux, France
| | - G Ahle
- Hôpitaux civils de Colmar, Service de Neurologie, Colmar, France
| | - R Houot
- Hôpital Universitaire de Rennes, Service d'Hématologie, Rennes, France
| | - L Taillandier
- Hôpital Universitaire de Nancy, Service de Neurologie, Nancy, France
| | - R Gressin
- Hôpital Universitaire de Grenoble, Service d'Hématologie, Grenoble, France
| | - O Casasnovas
- Hôpital Universitaire de Dijon, Service d'hematologie clinique, Dijon, France
| | - J P Marolleau
- Hôpital Universitaire d'Amiens, Service d'Hematologie clinique, Amiens, France
| | - J Tamburini
- Hôpital Cochin, Service d'Hématologie, Paris, France
| | - C Serrier
- Centre Hospitalier de Perpignan, Service d'Hématologie, Perpignan, France
| | - E Perez
- Hôpital Universitaire de la Réunion, Service d'oncologie-hématologie, Paris, La Réunion, France
| | - J Paillassa
- Hôpital Universitaire d'Angers, Service d'Hématologie, Angers, France
| | - E Gyan
- Hôpital Universitaire de Tours, Service d'Hématologie, Tours, France
| | - A Chauchet
- Hôpital Universitaire de Besançon, Service d'Hématologie, Besançon, France
| | - R Ursu
- Hôpital Saint-Louis, Service de Neurologie à orientation oncologique, Paris, France
| | - A Kas
- Hôpital Pitié-Salpêtrière, Service de Médecine Nucléaire, Paris, France
| | - C Soussain
- Institut Curie, Service d'Hématologie, Saint-Cloud, France and INSERM U932, Institut Curie, PSL Research University, Paris, France
| | - C Houillier
- Hôpital Pitié-Salpêtrière, Service de Neurologie 2-Mazarin, APHP, Sorbonne Université, IHU, ICM, Paris, France.
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Ramji A, Rinella M, Dufour J, Anstee QM, Younossi Z, Loomba R, Sanyal AJ, Capozza T, Trylesinki A, Ratziu V. A219 AMINOTRANSFERASE IMPROVEMENTS IN PATIENTS WITH NON-ALCOHOLIC STEATOHEPATITIS ARE ASSOCIATED WITH FIBROSIS REGRESSION IN THE REGENERATE STUDY. J Can Assoc Gastroenterol 2022. [DOI: 10.1093/jcag/gwab049.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The interim analysis of the REGENERATE study showed obeticholic acid (OCA) 25 mg treatment significantly improved liver histology in patients with nonalcoholic steatohepatitis (NASH) and fibrosis. Elevations in aminotransferases are associated with adverse liver-related outcomes in NASH.
Aims
Here, we evaluate the utility of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) as markers of treatment response to OCA in patients with NASH.
Methods
Changes in ALT (upper limit of normal [ULN] = 55 U/L) and AST (ULN = 34 U/L) were assessed systematically at 1, 3, 6, 12, and 18 months in 931 NASH patients with stage 2 or 3 fibrosis randomized 1:1:1 to placebo (PBO), OCA 10 mg, or OCA 25 mg in REGENERATE (intent-to-treat population). Least-square mean (LSM) and 95% confidence intervals (CIs) of percentage change from baseline in ALT and AST were analyzed using a mixed-effect repeated-measures model.
Results
Baseline characteristics were well-balanced across treatment arms: ALT 79±53 U/L; AST 58±36 U/L; 44% F2, 56% F3. Aminotransferase values were > ULN for ALT in 60% (7% > 3xULN), and for AST in 74% (9% > 3xULN) of patients. Rapid, progressive, and dose-dependent improvement in ALT and AST was seen across PBO, OCA 10 mg, and OCA 25 mg arms, which at Month 18 was: ALT LSM change (95% CI), respectively, -4.9% (-10.7–0.9), -23.2% (-28.9– -17.4) and -31.9% (-37.7– -26.1) and in AST, -8.7% (-12.1– -5.2), -13.4% (-16.8– -9.9), and -19.4 (-22.8– -15.9). ALT and AST LSM reductions in OCA arms vs PBO were seen regardless of patient ULN status at baseline. In all patients, ALT/AST reduction was associated with probability of fibrosis regression at Month 18, ranging from approximately 20%, 95% CI (14–27) to 45% (37–54) with any reduction in ALT (> 0%–100%) and between approximately 20%, 95% CI (25–38) to 43% (35–57) with any reduction in AST (> 0%–100%). Interestingly, even with increases of ≤ 40% in AST or ALT there was still a small probability of fibrosis regression (< 20%). Analysis of changes in ALT and AST in individual patients showed that more patients had improvements on OCA than PBO at Month 18 (FIG 1).
Conclusions
OCA resulted in consistent dose-dependent improvement of ALT and AST. Patients with reductions in ALT or AST were up to twice as likely to have fibrosis improvement than those whose ALT or AST increased. The REGENERATE study is ongoing and will continue through clinical outcomes for verification and description of clinical benefits of OCA in treatment of NASH.
Funding Agencies
None
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Affiliation(s)
- A Ramji
- Gastrointestinal Research Institute, Vancouver, BC, Canada
| | - M Rinella
- Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - J Dufour
- University Clinic for Visceral Surgery and Medicine, Inselspital, Bern, Switzerland & University of Bern, Bern, Switzerland
| | - Q M Anstee
- Translational & Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Z Younossi
- Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, IL
| | - R Loomba
- University of California San Diego, La Jolla, CA
| | - A J Sanyal
- Virginia Commonwealth University, Richmond, VA
| | - T Capozza
- Intercept Pharmaceuticals Inc, New York, NY
| | - A Trylesinki
- Intercept Pharmaceuticals, London, United Kingdom
| | - V Ratziu
- Sorbonne Universite, Paris, Île-de-France, France
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Dufour J, Choquet S, Schmitt A, Ahle G, Houot R, Taillandier L, Ursu R, Hoang-Xuan K, Soussain C, Houillier C. P14.48 Extracerebral relapses of primary CNS lymphoma (PCNSL): a LOC network retrospective study. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab180.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
Classically PCNSL remain confined within the CNS throughout their evolution for reasons still unknown (> 80% cerebral relapses). The aim of this study was to describe the characteristics and outcomes of the rare extracerebral relapses of PCNSL.
MATERIAL AND METHODS
This is a multicenter, retrospective study. We included all immunocompetent patients newly diagnosed with diffuse large B-cell PCNSL registered in the national LOC network database since 2010 and followed prospectively, who presented an extracerebral relapse, pure (extracerebral only site) or associated with concomitant CNS relapse (mixed). All had body scan and/or TEP -CT at diagnosis work up.
RESULTS
Of the 1968 PCNSL included in the database, 29 (1.5%) patients presented a systemic relapse [median age 71 years, median KPS 70% at relapse], either pure (n=19) or mixed (n=10), with a histological confirmation in 19 cases (66%). The median delay between initial diagnosis and systemic relapse was 15 months [2–49 months], with 5 very early relapses (<8 months) and 10 late relapses (>21 months). 27 patients had symptoms, 21 related to the location of relapse and 6 with only general symptoms. The localization was thoracic (n=11), abdominal/pelvic (n=14), head/neck (n=6) and limbs (n=9). We found visceral (n=24, 83%), including testis in 5 (28%) men and breast in 3 (27%) women, lymph node (n=12, 41%) and peripheral nervous system (PNS) (n=8, 28%; 4 plexus and 4 extradural roots) involvement. 27 patients were treated with chemotherapy, either with only systemic target (n=8) (R-CHOP alone) or mixed systemic and CNS target (n=19) (R-CHOP-MTX, R-ICE, GEMOX, RDHAC) and consolidated by high-dose chemotherapy with autologous stem cell transplantation (HCT-ASCT) in 4 cases [median age 55 years, median KPS 80%], with 34% of complete response. After systemic relapse, median progression-free survival was 8 months and overall survival (OS) was 9 months, 15 months for pure systemic and 4.5 months for mixed relapses. KPS>70%, pure systemic relapses and complete response were significantly associated with higher OS in univariate analysis.
CONCLUSION
Extracerebral PCNSL relapses are very rare, mainly extranodal and involve a large spectrum of anatomical sites, the most frequent being testis, breast and PNS. Prognosis was worse in case of mixed relapse than in pure systemic relapse that was similar to non PCNSL lymphomas. Very early relapses raise the question of misdiagnosed occult extracerebral lymphoma at diagnostic work up that should include systematically a FDG PET-CT. More studies are needed to refine their treatment and to specify the role of HCT-ASCT. Paired tumor tissues at diagnosis (CNS)/relapse (extracerebral) analysis would provide a better understanding of underlying molecular mechanisms.
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Affiliation(s)
- J Dufour
- Hôpital Pitié-Salpêtriere, Paris, France
| | - S Choquet
- Hôpital Pitié-Salpêtriere, Paris, France
| | - A Schmitt
- Institut de Bergonie, Bordeaux, France
| | - G Ahle
- Centre hospitalier de Colmar, Colmar, France
| | - R Houot
- Hôpital Universitaire de Rennes, Rennes, France
| | | | - R Ursu
- Hôpital Saint-Louis, Paris, France
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Dufour J, Houillier C, Jacob J, Delattre JY. Brain radionecrosis with severe dementia occurring more than 20 years after radiotherapy: a case report. Rev Neurol (Paris) 2021; 177:1008-1010. [PMID: 34167807 DOI: 10.1016/j.neurol.2020.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/04/2020] [Accepted: 12/10/2020] [Indexed: 11/19/2022]
Affiliation(s)
- J Dufour
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, Service de Neurologie 2-Mazarin, 75013 Paris, France
| | - C Houillier
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, Service de Neurologie 2-Mazarin, 75013 Paris, France.
| | - J Jacob
- Sorbonne Université, Assistance Publique-Hôpitaux de Paris, Groupe Hospitalier Pitié-Salpêtrière-Charles Foix, Department of Radiation Oncology, 75013 Paris, France
| | - J Y Delattre
- Sorbonne Université, Inserm, CNRS, UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, Service de Neurologie 2-Mazarin, 75013 Paris, France
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Montano-Loza AJ, Boursier J, Sanyal AJ, Ratziu V, Rinella M, Loomba R, Dufour J, Mozaffari E, Shringarpure R, MacConell L, Granston T, Zhou H, Trylesinski A, Harrison SA, Bedossa P, Goodman Z, Younossi Z, Noureddin M, Bugianesi E, Anstee QM. A217 NONINVASIVE ASSESSMENTS TO IDENTIFY PATIENTS WITH ADVANCED FIBROSIS DUE TO NASH: SCREENED POPULATION FROM THE REGENERATE TRIAL. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Aims
We explored the ability of noninvasive tests (NITs) to identify patients (pts) with advanced fibrosis due to NASH.
Methods
All screened pts from the ongoing phase 3 REGENERATE with available histology data were included. Five NITs were evaluated using established literature cutoffs to identify or exclude advanced fibrosis (values between upper and lower thresholds were considered indeterminate): Aspartate Transaminase-to-Platelet Ratio Index (APRI; ≥0.57, ≤0.84), Enhanced Liver Fibrosis (ELF; ≥7.7, <9.8), Fibrosis-4 (FIB-4; ≥1.30, <2.67), NAFLD fibrosis score (NFS; ≥−1.455, <0.676), and Transient Elastography (TE; ≥7.9 kPa, <9.6 kPa). Three testing methods applied were single NIT, 2 simultaneous NITs weighted equally (NFS+ELF, FIB-4+ELF, NFS+TE, FIB-4+TE), and 2 sequential NITs with the second test performed only if the first test was indeterminate (NFS→ELF, FIB-4→ELF, NFS→TE, FIB-4→TE).
Results
4133 pts in the REGENERATE screened population had an available biopsy (baseline liver biopsy: F0, 15.5%; F1, 27.2%; F2, 21.2%; F3, 29.6%; F4, 6.5%). Of these, 96% had FIB-4, NFS, and APRI, 41% had TE, and 28% had ELF. Single NITs with upper thresholds demonstrating strong specificity for identification of advanced fibrosis were FIB-4 (97%), NFS (94%), and APRI (86%); NITs with lower thresholds demonstrating good sensitivity for identification of early fibrosis were ELF (100%) and TE (88%). Evaluation of 2 simultaneous NITs resulted in a greater percentage of pts in the indeterminate zone. Application of 2 sequential tests improved the accuracy of identification and reduced misclassification vs 2 simultaneous tests.
Conclusions
Sequential NIT strategies may decrease liver biopsy rates while maintaining the accuracy of noninvasive diagnosis in pts with advanced fibrosis due to NASH.
Funding Agencies
Intercept Pharmaceuticals
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Affiliation(s)
- A J Montano-Loza
- Division of Gastroenterology & Liver Unit, University of Alberta, Edmonton, AB, Canada
| | | | - A J Sanyal
- Virginia Commonwealth University, Richmond, VA
| | - V Ratziu
- Sorbonne Universite, Paris, Île-de-France, France
| | - M Rinella
- Northwestern University, Chicago, IL
| | - R Loomba
- University of California San Diego, La Jolla, CA
| | - J Dufour
- University of Bern, Bern, Switzerland
| | | | | | | | - T Granston
- Intercept Pharmaceuticals Inc, New York, NY
| | - H Zhou
- Intercept Pharmaceuticals Inc, New York, NY
| | | | - S A Harrison
- Pinnacle Clinical Research Center, San Antonio, TX
| | | | | | | | - M Noureddin
- Cedars-Sinai Medical Center, Los Angeles, CA
| | | | - Q M Anstee
- Newcastle University, Newcastle upon Tyne, Tyne and Wear, United Kingdom
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6
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Salles A, Dufour J, Hassanaly P, Michel P, Cabot C, Grosjean J. Analyse du discours médical sur Twitter®. Étude d’un corpus de tweets émis par des médecins généralistes entre juin 2012 et mars 2017 et contenant le hashtag #DocTocToc. Rev Epidemiol Sante Publique 2019. [DOI: 10.1016/j.respe.2019.03.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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7
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Gouvernet J, Dufour J, Degoulet P, Laugier R, Quilichini F, Fieschi M, Giorgi R. Elaboration and Formalization of Current Scientific Knowledge of Risks and Preventive Measures Illustrated by Colorectal Cancer. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Summary
Objectives:
Present the method used to elaborate and formalize current scientific knowledge to provide physicians with tools available on the Internet, that enable them to evaluate individual patient risk, give personalized preventive recommendations or early screening measures.
Methods:
The approach suggested in this article is in line with medical procedures based on levels of evidence (Evidence-based Medicine). A cyclical process for developing recommendations allows us to quickly incorporate current scientific information. At each phase, the analysis is reevaluated by experts in the field collaborating on the project. The information is formalized through the use of levels of evidence and grades of recommendations. GLIF model is used to implement recommendations for clinical practice guidelines.
Results:
The most current scientific evidence incorporated in a cyclical process includes several steps: critical analysis according to the Evidence-based Medicine method; identification of predictive factors; setting-up of risk levels; identification of prevention measures; elaboration of personalized recommendation. The information technology implementation of the clinical practice guideline enables physicians to quickly obtain personalized information for their patients. Cases of colorectal prevention illustrate our approach.
Conclusions:
Integration of current scientific knowledge is an important process. The delay between the moment new information arrives and the moment the practitioner applies it, is thus reduced.
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Douine M, Gozlan R, Nacher M, Dufour J, Reynaud Y, Elguero E, Combe M, Velvin C, Chevillon C, Berlioz-Arthaud A, Labbé S, Sainte-Marie D, Guégan JF, Pradinaud R, Couppié P. L’infection à Mycobacterium ulcerans (ulcère de Buruli) en Guyane ; transition d’un profil épidémiologique africain vers un profil australien. Ann Dermatol Venereol 2017. [DOI: 10.1016/j.annder.2017.09.066] [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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9
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Bonini J, Boralevi F, Leduc N, Dufour J, Couppié P. Épidémiologie des pathologies dermato-pédiatriques au centre hospitalier de Cayenne : une étude rétrospective sur neuf ans. Ann Dermatol Venereol 2017. [DOI: 10.1016/j.annder.2017.09.383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Aoun-Coussieu A, Nacher M, Dufour J, Demar M, Couppié P. Cas de leishmanioses cutanées à L. lainsoni en Guyane française, de 2003 à 2013. Ann Dermatol Venereol 2016. [DOI: 10.1016/j.annder.2016.09.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Darmon A, Leduc N, Delaigue S, Ginouves M, Bonini J, Dufour J, Prevot G, Sainte-Marie D, Labbé S, Boukari R, Nacher M, Demar M, Couppié P. Leishmaniose cutanée multilésionnelle en Guyane française : étude comparative. Ann Dermatol Venereol 2016. [DOI: 10.1016/j.annder.2016.09.532] [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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12
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Bertolotti A, Lasseaux E, Sainte-Marie D, Dufour J, Gerard M, Zhang Q, Desplanches N, Brousse P, Martin E, Verloes A, Arveiler B, Couppie P. Détection d’une mutation homozygote chez 2 patients en Guyane française du nouveau gène de l’albinisme SLC24A5 (AOC 6). Ann Dermatol Venereol 2015. [DOI: 10.1016/j.annder.2015.10.358] [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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13
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Turcotte M, Fernandez M, Desroches S, Marquis M, Dufour J, Provencher V. Canadian food retailers' reasons for adopting the Eat Well Campaign (2013–14) - A qualitative study. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv175.261] [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: 11/12/2022] Open
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14
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Linck V, Sambourg E, Demar M, Graille J, Blanchet D, Darrigade AS, Dufour J, Sainte-Marie D, Pradinaud R, Labbe S, Aznar C, Couppie P. La lobomycose en Guyane française : à propos de 20 observations. Ann Dermatol Venereol 2014. [DOI: 10.1016/j.annder.2014.09.509] [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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Sambourg E, Demar M, Simon S, Blanchet D, Dufour J, Sainte-Marie D, Fior A, Carme B, Aznar C, Couppié P. [Paracoccidioidomycosis of the external ear]. Ann Dermatol Venereol 2014; 141:514-7. [PMID: 25209814 DOI: 10.1016/j.annder.2014.04.121] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 03/05/2014] [Accepted: 04/02/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Paracoccidioidomycosis is a systemic fungal infection common in Latin America. Cutaneous involvement is frequent and usually affects multiple sites, being most frequently associated with lesions of the oropharyngeal mucosa. The cutaneous form on its own is rare. PATIENTS AND METHODS We report a case of paracoccidioidomycosis isolated from the ear of a 43-year-old immunocompetent man. The lesion consisted of a partially ulcerated plaque on the auricle of the left ear. Direct examination, histopathological examination and PCR revealed the presence in the skin lesion of yeasts identified as Paracoccidioides brasiliensis. DISCUSSION The sites of paracoccidioidomycosis on the ear can be confused with other tropical diseases frequently found in the Amazon region such as leishmaniasis, leprosy and lobomycosis. The absence of any other cutaneous sites in this case raised the question of whether the lesion was of primary or secondary origin.
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Affiliation(s)
- E Sambourg
- Service de dermatologie, centre hospitalier de Cayenne, BP 6006, 97300 Cayenne, Guyane
| | - M Demar
- Service de parasitologie-mycologie, université des Antilles et de la Guyane, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane; EA 3593-EPaT, université des Antilles et de la Guyane, BP 6006, Cayenne, Guyane
| | - S Simon
- Service de parasitologie-mycologie, université des Antilles et de la Guyane, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane; EA 3593-EPaT, université des Antilles et de la Guyane, BP 6006, Cayenne, Guyane
| | - D Blanchet
- Service de parasitologie-mycologie, université des Antilles et de la Guyane, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane; EA 3593-EPaT, université des Antilles et de la Guyane, BP 6006, Cayenne, Guyane
| | - J Dufour
- Service de dermatologie, centre hospitalier de Cayenne, BP 6006, 97300 Cayenne, Guyane; Service de parasitologie-mycologie, université des Antilles et de la Guyane, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane
| | - D Sainte-Marie
- Service de dermatologie, centre hospitalier de Cayenne, BP 6006, 97300 Cayenne, Guyane; Service de parasitologie-mycologie, université des Antilles et de la Guyane, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane
| | - A Fior
- Service d'anatomo-pathologie, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane
| | - B Carme
- Service de parasitologie-mycologie, université des Antilles et de la Guyane, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane; EA 3593-EPaT, université des Antilles et de la Guyane, BP 6006, Cayenne, Guyane; CIC-EC Antilles-Guyane, CIE 802 Inserm, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane
| | - C Aznar
- Service de parasitologie-mycologie, université des Antilles et de la Guyane, centre hospitalier de Cayenne, BP 6006, Cayenne, Guyane; EA 3593-EPaT, université des Antilles et de la Guyane, BP 6006, Cayenne, Guyane
| | - P Couppié
- Service de dermatologie, centre hospitalier de Cayenne, BP 6006, 97300 Cayenne, Guyane; EA 3593-EPaT, université des Antilles et de la Guyane, BP 6006, Cayenne, Guyane.
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Sambourg E, Dufour J, Édouard S, Morris A, Mosnier E, Reynaud Y, Sainte-Marie D, Nacher M, Guégan JF, Couppié P. Réponses et réactions paradoxales au cours du traitement médicamenteux de l’infection à Mycobacterium ulcerans (ulcère de Buruli). Quatre observations en Guyane française. Ann Dermatol Venereol 2014; 141:413-8. [DOI: 10.1016/j.annder.2014.01.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 12/02/2013] [Accepted: 01/10/2014] [Indexed: 11/28/2022]
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Raveloharimino H, Davi K, Andrianjanahary O, Ranaivoarivony V, Dufour J, Muresan G, Favre A, Guerin B. SFN P-09 - Lupus néonatal : à propos d’un cas. Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)71882-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Darrigade AS, Saint-Marie D, Dufour J, Edouard S, Graille J, Cheuret M, Couppié P. [The value of dermoscopy in the diagnosis of tinea nigra]. Ann Dermatol Venereol 2014; 141:167-9. [PMID: 24507218 DOI: 10.1016/j.annder.2013.10.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 09/19/2013] [Accepted: 10/04/2013] [Indexed: 11/19/2022]
Affiliation(s)
- A-S Darrigade
- Service de dermatologie, centre hospitalier Cayenne, 3, avenue des Flamboyants, 97300 Cayenne, Guyane française.
| | - D Saint-Marie
- Service de dermatologie, centre hospitalier Cayenne, 3, avenue des Flamboyants, 97300 Cayenne, Guyane française
| | - J Dufour
- Service de dermatologie, centre hospitalier Cayenne, 3, avenue des Flamboyants, 97300 Cayenne, Guyane française
| | - S Edouard
- Service de dermatologie, centre hospitalier Cayenne, 3, avenue des Flamboyants, 97300 Cayenne, Guyane française
| | - J Graille
- Service de dermatologie, centre hospitalier Cayenne, 3, avenue des Flamboyants, 97300 Cayenne, Guyane française
| | - M Cheuret
- Service de dermatologie, centre hospitalier Cayenne, 3, avenue des Flamboyants, 97300 Cayenne, Guyane française
| | - P Couppié
- Service de dermatologie, centre hospitalier Cayenne, 3, avenue des Flamboyants, 97300 Cayenne, Guyane française
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Edouard S, Guillier A, Bianco L, Dufour J, Sainte Marie D, Marnet D, Jeanbourquin D, Couppie P. Atteintes cutanéomuqueuses révélant une acromégalie : souriez Monsieur ! Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.10.317] [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: 10/26/2022]
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Kerforne T, Petitpas F, Scepi M, Loupec T, Dufour J, Nanadoumgar H, Richer J, Cornu-Skurnik A, Bendahou M, Riou B, Debaene B, Mimoz O. Accurate and easy to learn ultrasound sign to confirm correct tracheal intubation in cadaver model. Br J Anaesth 2013; 111:510-1. [DOI: 10.1093/bja/aet270] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Couppié P, Dufour J, Marty C, Edouard S, Nacher M, Sainte-Marie D. Augmentation du nombre de cas de lèpre en Guyane depuis 2006. Ann Dermatol Venereol 2012. [DOI: 10.1016/j.annder.2012.10.330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Dufour J, Petitpas F, Laksiri L, Mimoz O. Fatal hemodialysis in head injured patient. Minerva Anestesiol 2012; 78:733-734. [PMID: 22628059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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23
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Roger A, Hanf M, Dufour J, Basurko C, Lazar M, Sainte-Marie D, Simon S, Nacher M, Carme B, Couppié P. Climat et leishmaniose cutanée en Guyane. Étude à partir d’une série de 1302 patients vus entre 1994 et 2010. Ann Dermatol Venereol 2011. [DOI: 10.1016/j.annder.2011.10.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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24
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Brou Y, Elguero E, Ruffine R, Dufour J, Bron J, Faure J, Nacher M, Chevillon C, Guégan J, Couppié P. Infection à Mycobacterium ulcerans (ulcère de Buruli) sur l’Ile de Cayenne : distribution spatiale et étude des déterminants géographiques associés à la maladie. Ann Dermatol Venereol 2011. [DOI: 10.1016/j.annder.2011.10.319] [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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Dufour J, Lelièvre L, Santa F, Fior A, Berlioz M, Lazar M, Sainte-Marie D, Louvel D, Couppié P. Manifestations viscérales de la lèpre : deux observations en Guyane. Ann Dermatol Venereol 2011. [DOI: 10.1016/j.annder.2011.10.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Coudroy R, Carise E, Dufour J, Mounios H, Roblot P, Pourrat O, Robert R. ‘Docteur, j’ai l’estomac retourné...’. Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.03.301] [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: 10/28/2022]
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Dufour J, Lopez L, Negro C, Latorre R, Formoso A, Lopez-Mateos F. Mathematical model of magnetite synthesis by oxidation of sulfuric pickling liquors from steelmaking. CHEM ENG COMMUN 2010. [DOI: 10.1080/00986440212080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- J. Dufour
- a Chemical Engineering Department , Complutense University of Madrid , Spain
| | - L. Lopez
- a Chemical Engineering Department , Complutense University of Madrid , Spain
- b Primary Metallurgy and Materials Recycling Department , National Centre for Metallurgical Research (CSIC) , Spain
| | - C. Negro
- a Chemical Engineering Department , Complutense University of Madrid , Spain
| | - R. Latorre
- a Chemical Engineering Department , Complutense University of Madrid , Spain
| | - A. Formoso
- b Primary Metallurgy and Materials Recycling Department , National Centre for Metallurgical Research (CSIC) , Spain
| | - F. Lopez-Mateos
- a Chemical Engineering Department , Complutense University of Madrid , Spain
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Fernandez-Manjarres JF, Gerard PR, Dufour J, Raquin C, Frascaria-Lacoste N. Differential patterns of morphological and molecular hybridization between Fraxinus excelsior L. and Fraxinus angustifolia Vahl (Oleaceae) in eastern and western France. Mol Ecol 2006; 15:3245-57. [PMID: 16968268 DOI: 10.1111/j.1365-294x.2006.02975.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We examined large-scale patterns of morphology, genetic structure and ecological correlates of Fraxinus excelsior and the closely related species Fraxinus angustifolia in France, in order to determine the degree of hybridization between them. We sampled 24 populations in two putative hybrid zones (Loire and Saône), and five control populations of each species. We measured foliar characteristics of adult trees and used five nuclear microsatellites as molecular markers. Canonical discriminant analysis indicated that the two species differ in morphology, but that intermediate types are common in the Loire region but less frequent in the Saône region. Bayesian population assignment identified one F. angustifolia and two F. excelsior gene pools. Most Loire individuals clustered genetically with the F. angustifolia gene pool. In contrast, the Saône region presented individuals belonging mostly to F. excelsior pools, although the F. angustifolia type was frequent in certain populations. The lowest F(ST) values were found between the Loire and F. angustifolia controls that also exhibited no significant isolation by distance. The proportion of the F. angustifolia gene pool in each locality was negatively correlated with winter temperatures, suggesting that a cold climate may be limiting. Hybridization is probably favoured by the intermediate climatic conditions in the Loire region that allow both species to occur, but is somewhat hampered by the harsher winters in the Saône area where morphological introgression has apparently not yet occurred.
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Affiliation(s)
- J F Fernandez-Manjarres
- Laboratoire Ecologie, Systématique et Evolution, UMR CNRS-UPXI-ENGREF 8079, Bât 360, Université Paris XI, 91405 Orsay cedex, France.
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Abstract
Studies in nonhuman primates indicate that changes in the thickness and integrity of the vaginal epithelium affect the transmission rates of HIV-1, but few studies have examined the normal variations that may occur in the vagina of normal macaques as a result of aging or changes in the menstrual cycle. This study was conducted to determine if differences occur in the thickness of the vaginal mucosa with age or menses. Vaginal mucosal thickness was compared in 46 rhesus macaques grouped as juvenile (1-3 years old), mature cycling (3-21 years old), and geriatric (> 21 years old). Epithelia of mature cycling macaques were also compared at different stages of the menstrual cycle. Older females (> 21 years) had the thinnest and least keratinized epithelium of all groups, followed by the youngest females (< 3 years). The vaginal epithelium was also thinner in cycling macaques during menses compared to the follicular stage. In addition, young, geriatric, or cycling macaques during menses had minimal keratinization. We hypothesize that normal physiologic changes in the vaginal epithelium of women occur with age and menses, which may affect a woman's susceptibility to HIV-1 transmission and other sexually transmitted diseases. Also, age and menstrual cycle should be considered when designing vaginal transmission experiments in rhesus macaques.
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Affiliation(s)
- B Poonia
- Division of Comparative Pathology, Tulane National Primate Research Centre, 18703 Three Rivers Road, Covington, Louisiana 70433, USA
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31
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Teleshova N, Kenney J, Williams V, Van Nest G, Marshall J, Lifson JD, Sivin I, Dufour J, Bohm R, Gettie A, Pope M. CpG-C ISS-ODN activation of blood-derived B cells from healthy and chronic immunodeficiency virus-infected macaques. J Leukoc Biol 2006; 79:257-67. [PMID: 16443827 DOI: 10.1189/jlb.0205084] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [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: 01/19/2023] Open
Abstract
Cytosine-phosphate-guanine class C (CpG-C) immunostimulatory sequence oligodeoxynucleotides (ISS-ODNs) activate human B cells and dendritic cells (DCs), properties that suggest potential use as a novel adjuvant to enhance vaccine efficacy. After demonstrating that the CpG-C ISS-ODN C274 activates macaque DCs, we examined in vitro activation of macaque B cells by C274 as a prelude to evaluation of this molecule as an adjuvant in the testing of candidate human immunodeficiency virus vaccines in the rhesus macaque-simian immunodeficiency virus (SIV) model. C274 induced macaque CD20(+) B cells to proliferate more strongly than CD40 ligand or CpG-B ISS-ODN. C274 enhanced B cell survival; increased viability was most evident after 3-7 days of culture. Increased expression of CD40, CD80, and CD86 by B cells was apparent within 24 h of exposure to C274 and persisted for up to 1 week. C274-stimulated, B cell-enriched and peripheral blood mononuclear cell suspensions from naïve and immunodeficiency virus-infected monkeys secreted several cytokines [e.g., interleukin (IL)-3, IL-6, IL-12, interferon-alpha] and chemokines [e.g., monocyte chemoattractant protein-1/CC chemokine ligand 2 (CCL2), macrophage-inflammatory protein-1alpha/CCL3, IL-8/CXC chemokine ligand 8]. In comparison, exposure of macaque B cells to SIV had minimal impact on surface phenotype, despite inducing cytokine and chemokine production in cells from infected and uninfected animals. These observations emphasize the need to identify strategies to optimally boost immune function, as immunodeficiency viruses themselves only partially activate B cells and DCs. The ability of C274 to stimulate B cells and DCs in healthy and infected monkeys suggests its possible use as a broad-acting adjuvant to be applied in the rhesus macaque model for the development of preventative and therapeutic vaccines.
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Affiliation(s)
- N Teleshova
- Population Council, 1230 York Avenue, New York, NY 10021, USA
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Damaraju S, Murray D, Dufour J, Carandang D, Myrehaug S, Fallone G, Field C, Greiner R, Hanson J, Cass C, Parliament M. 128 A comprehensive genomic approach to the identification of predictive markers using dna and tissue repair gene polymorphisms in radiation induced late toxicity in prostate cancer patients treated with conformal radiotherapy. Radiother Oncol 2006. [DOI: 10.1016/s0167-8140(06)80607-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Meyer N, Dufour J, Lamy T, Chevrant-Breton J. P324 - Leucémie à grands lymphocytes T à grains une étiologie rare de vascularite leucocytoclasique. Ann Dermatol Venereol 2005. [DOI: 10.1016/s0151-9638(05)80053-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Clejan S, Mandrea E, Pandrea IV, Dufour J, Japa S, Veazey RS. Immune responses induced by intranasal imiquimod and implications for therapeutics in rhinovirus infections. J Cell Mol Med 2005; 9:457-61. [PMID: 15963264 PMCID: PMC6740272 DOI: 10.1111/j.1582-4934.2005.tb00370.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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: 11/30/2022] Open
Abstract
Notwithstanding the progress recently made in immunology and virology, there is yet no effective, specific treatment for the common cold. Symptomatic treatment is minimally effective. An anecdotal report of rapid clearing of the common cold of recent onset after intranasal application of imiquimod in several subjects by one of the authors, made us test the hypothesis that this treatment works through the secretion of interferon by the nasal mucosa. We decided to do an animal study in primates (Indian Macaca Mulata): 5 treatment and 3 control animals were used. Imiquimod or placebo was massaged into the nares of the animals and periodic samples of post-nasal fluid were taken and measurements for Interferon alpha (IFNalpha) and Tumor Necrosis Factor alpha (TNFalpha) were made by ELISA methods, and kinetic studies. mRNA IFNalpha was also isolated and analyzed by quantitative competitive RT-PCR. The internal standard was constructed to be complementary to and compete with oligonucleotide primers and for amplification of target sequences. One intranasal application of imiquimod rapidly (1-4 Hours) induced high levels of mRNA for IFNalpha, and minimal levels in the control animals. Rapid induction of INFalpha, and proportional increase of TNFalpha sustained for 4 and 6 hours respectively were noted. No adverse reactions to treatment were found in macaques during this short period of intranasal imiquimod usage (except in one macaque with a short period of lacrimation). No animal had cytotoxic effects when examined at 6 hr, 12 hr, 24 hr or 48 hr, except one animal, which had an episode of lacrimation for 6 hr post treatment. Thus both safety and efficacy of short treatment with imiquimod is proven in this animal model. Proof of principle for intranasal treatment of the common cold with imiquimod is shown. We think that this work will encourage a number of double blind clinical trials to confirm the effectiveness of the intranasal treatment of the common cold with imiquimod.
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Affiliation(s)
- Sanda Clejan
- Department of Pathology & Laboratory Medicine, Tulane University School of Medicine and the General Clinical Research Center, New Orleans, LA, 70112-2699, USA.
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Sawyer MB, Damaraju S, Pituskin E, Carter SJ, Dufour J, Carandang D, Hanson J, Mackey JR. Effects of cytochrome P450 polymorphisms on tamoxifen metabolism. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.2055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- M. B. Sawyer
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
| | - S. Damaraju
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
| | - E. Pituskin
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
| | - S. J. Carter
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
| | - J. Dufour
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
| | - D. Carandang
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
| | - J. Hanson
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
| | - J. R. Mackey
- Cross Cancer Institute, Edmonton, AB, Canada; Pyxant Labs, Colarado Springs, CO
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Morand ME, Brachet S, Rossignol P, Dufour J, Frascaria-Lacoste N. A generalized heterozygote deficiency assessed with microsatellites in French common ash populations. Mol Ecol 2002; 11:377-85. [PMID: 11918777 DOI: 10.1046/j.1365-294x.2002.01461.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Common ash is a temperate forest tree with a colonizing behaviour, a discontinuous spatial distribution and a peculiar and poorly known mating system. Microsatellite markers were used to study the genetic structure in natural populations of common ash. Twelve populations located in northeastern France were analysed at five loci. Levels of genetic variability within and among stands were estimated for the seedling and adult stages. As expected for a forest tree, our results reveal high levels of intrapopulation diversity and a low genetic differentiation between stands. However, a general and significant heterozygote deficiency was found, with a mean F(IS) of 0.163 for the seedlings and of 0.292 for the adult trees. The different explanations for such an excess homozygosity are discussed: a nonMendelian inheritance of alleles, the presence of null alleles, a Wahlund effect and assortative mating.
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Affiliation(s)
- M-E Morand
- ENGREF, Laboratoire d'Ecologie, Systématique et Evolution (ESE), UPRESA CNRS 8079, Bâtiment 362, Université Paris-Sud, 91 405 Orsay Cedex, France.
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Giorgi R, Gouvernet J, Dufour J, Degoulet P, Laugier R, Quilichini F, Fieschi M. Elaboration and formalization of current scientific knowledge of risks and preventive measures illustrated by colorectal cancer. Methods Inf Med 2001; 40:323-30. [PMID: 11552345] [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: 02/21/2023]
Abstract
OBJECTIVES Present the method used to elaborate and formalize current scientific knowledge to provide physicians with tools available on the Internet, that enable them to evaluate individual patient risk, give personalized preventive recommendations or early screening measures. METHODS The approach suggested in this article is in line with medical procedures based on levels of evidence (Evidence-based Medicine). A cyclical process for developing recommendations allows us to quickly incorporate current scientific information. At each phase, the analysis is reevaluated by experts in the field collaborating on the project. The information is formalized through the use of levels of evidence and grades of recommendations. GLIF model is used to implement recommendations for clinical practice guidelines. RESULTS The most current scientific evidence incorporated in a cyclical process includes several steps: critical analysis according to the Evidence-based Medicine method; identification of predictive factors; setting-up risk levels; identification of prevention measures; elaboration of personalized recommendation. The information technology implementation of the clinical practice guideline enables physicians to quickly obtain personalized information for their patients. Cases of colorectal prevention illustrate our approach. CONCLUSIONS Integration of current scientific knowledge is an important process. The delay between the moment new information arrives and the moment the practitioner applies it, is thus reduced.
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Affiliation(s)
- R Giorgi
- Laboratoire d'Enseignement et de Recherche sur le Traitement de l'Information Médicale (LERTIM), Faculté de Médecine, Université de la Méditerranée, Marseille, France.
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Dufour J, Murat D, Dufour X, Foos J. Experimental Observation of Nuclear Reactions in Palladium and Uranium—Possible Explanation by Hydrex Mode. Fusion Science and Technology 2001. [DOI: 10.13182/fst01-a184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Dufour
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
| | - D. Murat
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
| | - X. Dufour
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
| | - J. Foos
- Conservatoire National des Arts et Métiers, Laboratoire des Sciences Nucléaires, 2 rue Conté, 75003 Paris, France
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Dufour J, González V, La Iglesia A. Optimization of 4A zeolite synthesis as recovery of wastes from aluminum finishing. J Environ Sci Health A Tox Hazard Subst Environ Eng 2001; 36:1257-1269. [PMID: 11545351 DOI: 10.1081/ese-100104876] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A model representing the synthesis process of 4A zeolite from wastes of aluminum finishing plants was obtained and validated through statistical tests. From this model, the optimum values for the molar ratios SiO2/ Al2O3, Na2O/SiO2 and H2O/Na2O, which define the type and quality of the synthesized zeolite, were estimated for the use of these wastes as raw material. The obtained zeolites could be used as water softeners in the formulation of detergents. The resulting liquors could be reused in the cleaning of the extrusion matrices used for aluminum profiles or recycled for new zeolites synthesis.
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Affiliation(s)
- J Dufour
- Dpt. Chemical Engineering, Fac. Chemistry, Complutense University of Madrid, Ciudad Universitaria, Spain.
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Dufour J, Cognie Y, Mermillod P, Mariana J, Romain R. Effects of the Booroola Fec gene on ovarian follicular populations in superovulated Romanov ewes pretreated with a GnRH antagonist. Reproduction 2000. [DOI: 10.1530/jrf.0.1180085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Dewar K, Bousquet J, Dufour J, Bernier L. A meiotically reproducible chromosome length polymorphism in the ascomycete fungus Ophiostoma ulmi (sensu lato). Mol Gen Genet 1997; 255:38-44. [PMID: 9230897 DOI: 10.1007/s004380050472] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We have followed the transmission of Ophiostoma ulmi s.l. chromosome length polymorphisms (CLPs) into the F2 generation to determine the reproducibility of a genome rearrangement culminating in the conversion of a 1.0 Mb chromosome into a 800 kb chromosome. The 1.0 Mb chromosome in strain CESS16K is thus far unique among O ulmi s.l. wild-type strains, as no other wild-type strains have been observed with chromosomes smaller than 2.3 Mb. It has been previously shown that the 1.0 Mb chromosome is mitotically stable, carries at least one normally expressed gene, and is transmitted through meiosis. In this study, a series of crosses were performed to further elucidate the pattern of inheritance of the 1.0 Mb chromosome and the process of conversion of the 1.0 Mb species to 800 kb. In crosses where the 1.0 Mb chromosome was allowed to pair with itself or with the 800 kb chromosome, all progeny inherited a copy of the 1.0 Mb or 800 kb form, further demonstrating the A-type nature of these small chromosomes. When a cross was repeated between the strains CESS16K (1.0 Mb chromosome) and FG245Br-O (no 1.0 Mb or 800 kb chromosome), the occurrence of a 800 kb chromosome was observed in 9% of the progeny. A reciprocal cross between an 800 kb strain and a strain with no 800 kb or 1.0 Mb chromosome was conducted, and a progeny strain containing a 1.0 Mb chromosome was recovered. The reproducibility and reciprocality of the 1.0 Mb to 800 kb chromosome conversion demonstrates that meiotic processes are responsible for this CLP, and that O. ulmi s.l. strains with various divergent genome architectures can remain sexually compatible.
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Affiliation(s)
- K Dewar
- Centre de recherche en biologie forestière, Faculté de foresterie et de géomatique, Université Laval, Ste-Foy, Québec, Canada
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Dufour J, Iglesia AL, González V, Ruiz‐Sierra JC. Viability of the use of pickling baths from aluminium surface treatment for synthesizing low Si/AI zeolites. ACTA ACUST UNITED AC 1997. [DOI: 10.1080/10934529709376645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Faux L, Pravikoff MS, Andriamonje S, Blank B, Dufour J, Fleury A, Marchand C, Schmidt K, Sümmerer K, Brohm T, Clerc H, Grewe A, Hanelt E, Voss B, Ziegler C. First observation of the beta -delayed proton decay of 52Ni. Phys Rev C Nucl Phys 1994; 49:2440-2443. [PMID: 9969491 DOI: 10.1103/physrevc.49.2440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Azam G, Convert G, Dufour J, Jasmin C, Mabire JP, Oweidat L, Sidi J. Hyperthermia system for deep-seated tumors. Recent Results Cancer Res 1986; 101:53-5. [PMID: 3952359 DOI: 10.1007/978-3-642-82530-9_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Cosset JM, Dutreix J, Dufour J, Janoray P, Damia E, Haie C, Clarke D. Combined interstitial hyperthermia and brachytherapy: Institute Gustave Roussy technique and preliminary results. Int J Radiat Oncol Biol Phys 1984; 10:307-12. [PMID: 6706725 DOI: 10.1016/0360-3016(84)90017-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In 1981, a protocol was developed at the Institute Gustave-Roussy, utilizing combined interstitial hyperthermia and brachytherapy, to treat recurrent tumors in previously irradiated areas. This protocol consisted of interstitial hyperthermia, 44 degrees C for 45 minutes, followed immediately by iridium 192 curietherapy, delivering 30 Gy in 2 or 3 days to the tumor volume. Fourteen implantations have been performed in 11 patients. Complete eradication of tumor has been achieved thus far in 10 cases. Two patients were not evaluable because of rapid death resulting from diffuse metastases, and two patients demonstrated a partial response (greater than 50% tumor reduction). Treatment has been generally well tolerated despite prior high dose irradiation. There has been only one serious complication-a large area of painful necrosis following retreatment of a recurrent floor of mouth carcinoma. Special "metallic-plastic" tubes were developed to improve tissue tolerance. We were able to document that a high and homogeneous temperature could be delivered throughout the tumor volume. The technical innovations, and the techniques of implantation and temperature documentation are described below.
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N'guyen Cat R, Leynaud G, Martin J, Dufour J, Assadourian R. [Spontaneous rupture of the spleen during chronic pancreatitis. A report on two new cases (author's transl)]. Sem Hop 1980; 56:575-8. [PMID: 6245464] [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: 01/19/2023]
Abstract
Spontaneous spleen rupture during chronic pancreatitis is scarcely seen. About 2 personal cases, the authors study 15 published cases. The spleen break can occur in patients with a known chronic pancreatitis, or with pancreatic signs, or without any symptomatology. Diagnosis is hard: spontaneous spleen break often looks like an acute pancreatitis. The high frequency of associated left pleural effusion is significant. Arteriography is helpful when it is done. Splenectomy, often too late, is the right treatment.
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Assadourian R, Leynaud G, Dufour J, Atie N. [Treatment of hydatid cyst of the liver. Our present attitude (author's transl)]. J Chir (Paris) 1980; 117:115-20. [PMID: 7380888] [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: 01/24/2023]
Abstract
From 1968 to 1978 the authors treated 60 hydatid cysts of the liver. Echotomography and computerised axial tomography showed the topography of the cyst. However, coelio-mesenteric arteriography and cavography are essential before any kystectomy. In spite of its simplicity, resection of the salient dome of the diaphragm is less often used, owing to the risk of bile leakage and recurrence. Pericystectomy fulfils better our therapeutic objectives. It is more difficult to carry out for there is a risk of hemorrhage. Marsupialisation and hepatectomy are exceptional. Since 1974, 13 pericystectomies out of 15 patients have been carried out, whereas resection of the salient dome was previously the most commonly used procedure (40 out of 45 cases). Only regular immunological follow up is a reliable test of lasting cure.
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Dutreix J, Convert G, Cosset JM, Damia E, Dufour J, Salama M. [Electric current and high frequency wave heating processes (author's transl)]. J Radiol 1979; 60:669-73. [PMID: 393819] [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: 12/15/2022]
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