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Bitterman R, Soualhine H, Poirier C, Ferraro P, Kabbani D, Hirji A, Tyrrell G, Bergeron C, Levy R, Wright A, Leung V, Singer L, Chaparro C, Keshavjee S, Richard-Greenblatt M, Husain S, Luong M. Mycobacterium Abscessus Complex Infections Among Lung Transplant Recipients: A National Retrospective Cohort Study. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1646] [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: 04/05/2023] Open
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Poirier C, Carter A, Kwan Y, Selvanathan C, Koo J, Westlund J, Leblanc K. ATRIAL FIBRILLATION PATIENTS' EXPERIENCES WITH COMBINATION ANTITHROMBOTIC THERAPY POST-PERCUTANEOUS CORONARY INTERVENTION. Can J Cardiol 2021. [DOI: 10.1016/j.cjca.2021.07.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Basso MA, Frey S, Guerriero KA, Jarraya B, Kastner S, Koyano KW, Leopold DA, Murphy K, Poirier C, Pope W, Silva AC, Tansey G, Uhrig L. Using non-invasive neuroimaging to enhance the care, well-being and experimental outcomes of laboratory non-human primates (monkeys). Neuroimage 2020; 228:117667. [PMID: 33359353 PMCID: PMC8005297 DOI: 10.1016/j.neuroimage.2020.117667] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 02/09/2023] Open
Abstract
Over the past 10-20 years, neuroscience witnessed an explosion in the use of non-invasive imaging methods, particularly magnetic resonance imaging (MRI), to study brain structure and function. Simultaneously, with access to MRI in many research institutions, MRI has become an indispensable tool for researchers and veterinarians to guide improvements in surgical procedures and implants and thus, experimental as well as clinical outcomes, given that access to MRI also allows for improved diagnosis and monitoring for brain disease. As part of the PRIMEatE Data Exchange, we gathered expert scientists, veterinarians, and clinicians who treat humans, to provide an overview of the use of non-invasive imaging tools, primarily MRI, to enhance experimental and welfare outcomes for laboratory non-human primates engaged in neuroscientific experiments. We aimed to provide guidance for other researchers, scientists and veterinarians in the use of this powerful imaging technology as well as to foster a larger conversation and community of scientists and veterinarians with a shared goal of improving the well-being and experimental outcomes for laboratory animals.
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Affiliation(s)
- M A Basso
- Fuster Laboratory of Cognitive Neuroscience, Department of Psychiatry and Biobehavioral Sciences UCLA Los Angeles CA 90095 USA
| | - S Frey
- Rogue Research, Inc. Montreal, QC, Canada
| | - K A Guerriero
- Washington National Primate Research Center University of Washington Seattle, WA USA
| | - B Jarraya
- Cognitive Neuroimaging Unit, INSERM, CEA, NeuroSpin center, 91191 Gif/Yvette, France; Université Paris-Saclay, UVSQ, Foch hospital, Paris, France
| | - S Kastner
- Princeton Neuroscience Institute & Department of Psychology Princeton University Princeton, NJ USA
| | - K W Koyano
- National Institute of Mental Health NIH Bethesda MD 20892 USA
| | - D A Leopold
- National Institute of Mental Health NIH Bethesda MD 20892 USA
| | - K Murphy
- Biosciences Institute and Centre for Behaviour and Evolution, Faculty of Medical Sciences Newcastle University Newcastle upon Tyne NE2 4HH United Kingdom UK
| | - C Poirier
- Biosciences Institute and Centre for Behaviour and Evolution, Faculty of Medical Sciences Newcastle University Newcastle upon Tyne NE2 4HH United Kingdom UK
| | - W Pope
- Department of Radiology UCLA Los Angeles, CA 90095 USA
| | - A C Silva
- Department of Neurobiology University of Pittsburgh, Pittsburgh PA 15261 USA
| | - G Tansey
- National Eye Institute NIH Bethesda MD 20892 USA
| | - L Uhrig
- Cognitive Neuroimaging Unit, INSERM, CEA, NeuroSpin center, 91191 Gif/Yvette, France
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St-Louis R, Stevens L, Brochiero E, Poirier C, Berthiaume Y, Noiseux N, Nasir B, Ferraro P. Preoperative Trajectories in Cystic Fibrosis and Their Association with Short and Long Term Survival after Lung Transplantation. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Adam D, Landry C, Corado-Castillo D, Jalbert A, Privé A, Merjaneh M, Noiseux N, Nasir B, Charbonney E, Chassé M, Poirier C, Ferraro P, Brochiero E. Relationship between Phenotypic Characteristics from the Donors, Predictive Biomarkers from the Donor Grafts and the Development of Primary Graft Dysfunction in Lung Transplant Recipients. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.345] [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: 11/17/2022] Open
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Landry C, Privé A, Menaouar A, Adam D, Dagenais A, Merjaneh M, Germain J, Noiseux N, Cailhier J, Berthiaume Y, Poirier C, Ferraro P, Brochiero E. Assessment of Predictive Biomarkers Associated with Ischemia/Reperfusion Injury and Primary Graft Dysfunction in Lung Transplants. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.590] [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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Finck W, Passildas J, Poirier C, Kwiatkowski F, Abrial C, Durando X, Penault-Llorca F, Radosevic-Robin N. Abstract P5-12-09: The ≥5% cut-off reveals tumor PD-L1 positivity as potential selection biomarker for patient enrollment into the trials evaluating anti-PD-1 or anti-PD-L1 agents in neoadjuvant treatment of triple negative breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p5-12-09] [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: 11/16/2022]
Abstract
Abstract
Background: Durable responses of triple negative breast cancer (TNBC) to pembrolizumab (anti-PD-1) or atezolizumab (anti-PD-L1) have been reported in the metastatic setting. Moreover, it is currently being hypothesized that immune checkpoint inhibitors might be more effective in the neoadjuvant setting, due to better preserved anti-tumor immunity in early TN disease. However, biomarkers predictive of response to anti-PD-1 or anti-PD-L1 agents, as well as biomarker-based strategies for testing those drugs in the neoadjuvant setting are still lacking. We evaluated PD-L1 protein expression and the composition of tumor-infiltrating lymphocytes (TILs) in untreated TNBC, in order to get a better insight into the TNBC sub-population(s) which would be suitable for neoadjuvant anti-PD-1 or anti-PD-L1 therapy evaluation. Methods: TNBC patients consecutively treated at the Jean Perrin Comprehensive Cancer Centre (Clermont-Ferrand, France), from 01/01/2010 to 12/31/2014, were included. FFPE tumor tissues were assessed for PD-L1 expression by immunohistochemical (IHC) laboratory-developed test (clone 28-8, Abcam), in tumor cells (tPD-L1) and in TILs. Positivity cut-offs evaluated were ≥1%, ≥5% and ≥10%. The amount CD8+, CD4+, FoxP3+ or PD-1+ TILs was determined by counting those cells, detected by IHC methods, within 5 consecutive HPFs (x400), from tumor invasive front toward tumor center. Clinical disease stage was determined using the TNM system. Results: One hundred and two TNBCs were assessed. There were 28.4%, 23.5% or 16.7% tPD-L1-positive cases (cs), for cut-offs ≥1%, ≥5% or ≥10%, respectively. Similarly, 32.4%, 15.7% or 5.9% of cs were positive for PD-L1 in TILs, using the same cut-offs. With ≥5% as cut-off, positivity for tPD-L1 significantly correlated with the amount of CD8+ (p=0.023), FoxP3+ (p=0.0036) or PD-1+ TILs (p=0.043). The same cut-off, applied to TILs, revealed significant correlations between PD-L1 positivity and the amount of each CD8+, CD4+ or PD-1+ TILs (p=0.025, 0.039 and 0.0042, respectively). Interestingly, when the ≥5% cut-off was used, tumors of T2 size were most frequently tPD-L1+ (11/41 cs, 26.8%), compared with the T1 (3/35 cs, 8.6%) and T3+T4 (3/18 cases, 16.7%) (p=0.04). With regards to TILs, with the ≥5% cut-off, the PD-L1+ cases belonged exclusively to the T1+T2 group (15/76), whereas the T3+T4 group was PD-L1-negative (0/18 cs). Other two cut-offs revealed only occasional correlations. Conclusion: This single-center, real-world TNBC cohort contained a high number of smaller tumors (T1-T2). The IHC-based PD-L1 assessment, with ≥5% as the positivity cut-off, revealed that approximately 1/4 of TNBC could be candidates for neoadjuvant anti-PD-1/anti-PD-L1 approaches. Combined with the amount of CD8+ and PD-1+ TILs, tumor PD-L1 positivity might make an easy-to-use composite biomarker for the 1st-level patient selection for PD-1 or PD-L1 inhibitors in neoadjuvant TNBC treatment. The 2nd level could exploit, for example, the assessment of mutation burden in tumors with low tPD-L1 or amount of CD8+ or PD-1+ TILs. Such tumors might be more frequent among larger TNBC (T3-T4).
Citation Format: Finck W, Passildas J, Poirier C, Kwiatkowski F, Abrial C, Durando X, Penault-Llorca F, Radosevic-Robin N. The ≥5% cut-off reveals tumor PD-L1 positivity as potential selection biomarker for patient enrollment into the trials evaluating anti-PD-1 or anti-PD-L1 agents in neoadjuvant treatment of triple negative breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P5-12-09.
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Affiliation(s)
- W Finck
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
| | - J Passildas
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
| | - C Poirier
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
| | - F Kwiatkowski
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
| | - C Abrial
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
| | - X Durando
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
| | - F Penault-Llorca
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
| | - N Radosevic-Robin
- Centre Jean Perrin, Clermont-Ferrand, France; UMR1240 INSERM/UCA, Centre Jean Perrin, Clermont-Ferrand, France
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Jomphe V, Mailhot G, Mailhot M, Berthiaume Y, Lavoie A, Poirier C, Ferraro P. 338 Is pre-transplant BMI a determinant of short-term post-lung transplant outcomes among CF recipients? J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30676-8] [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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Butler-Laporte G, Poirier C, Ferraro P, Langevin M, Lemieux C, Theoret Y, Luong M. Voriconazole Therapeutic Drug Monitoring Among Lung Transplant Recipients Receiving Targeted Therapy for Invasive Aspergillosis. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.634] [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: 10/19/2022] Open
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Poirier C, Dinh A, Salomon J, Grall N, Andremont A, Bernard L. Prevention of urinary tract infections by antibiotic cycling in spinal cord injury patients and low emergence of multidrug resistant bacteria. Med Mal Infect 2016; 46:294-9. [DOI: 10.1016/j.medmal.2016.02.010] [Citation(s) in RCA: 8] [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] [Received: 07/10/2015] [Revised: 12/15/2015] [Accepted: 02/25/2016] [Indexed: 10/21/2022]
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Eerland A, Sherrill AM, Magliano JP, Zwaan RA, Arnal JD, Aucoin P, Berger SA, Birt AR, Capezza N, Carlucci M, Crocker C, Ferretti TR, Kibbe MR, Knepp MM, Kurby CA, Melcher JM, Michael SW, Poirier C, Prenoveau JM. Registered Replication Report. Perspect Psychol Sci 2016; 11:158-71. [DOI: 10.1177/1745691615605826] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Language can be viewed as a complex set of cues that shape people’s mental representations of situations. For example, people think of behavior described using imperfective aspect (i.e., what a person was doing) as a dynamic, unfolding sequence of actions, whereas the same behavior described using perfective aspect (i.e., what a person did) is perceived as a completed whole. A recent study found that aspect can also influence how we think about a person’s intentions (Hart & Albarracín, 2011). Participants judged actions described in imperfective as being more intentional ( d between 0.67 and 0.77) and they imagined these actions in more detail ( d = 0.73). The fact that this finding has implications for legal decision making, coupled with the absence of other direct replication attempts, motivated this registered replication report (RRR). Multiple laboratories carried out 12 direct replication studies, including one MTurk study. A meta-analysis of these studies provides a precise estimate of the size of this effect free from publication bias. This RRR did not find that grammatical aspect affects intentionality ( d between 0 and −0.24) or imagery ( d = −0.08). We discuss possible explanations for the discrepancy between these results and those of the original study.
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Poirier C, Aymeric S, Grammatico-Guillon L, Lebeau JP, Bernard L, Le Bret P, Le Moal G, Gras G. Rapid HIV test in family practice. Med Mal Infect 2015; 45:207-14. [PMID: 25982343 DOI: 10.1016/j.medmal.2015.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 01/19/2015] [Revised: 01/19/2015] [Accepted: 03/24/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND The 2010-2014 HIV/AIDS French program recommends using HIV rapid diagnostic tests in family practice. Our aim was to assess the acceptability and feasibility of the RDT in family practice in France. METHODS The first part of this study was to determine the opinions of family practitioners (FPs) concerning the news guidelines for screening and the possible use of rapid HIV tests in their practice. The second part was a feasibility study of the actual use of rapid HIV tests given to FPs during six months. The third part was a qualitative analysis of experience feedback to determine the impediments to using rapid HIV tests. RESULTS Seventy-seven percent of the 352 FPs interviewed were favorable to rapid HIV tests use. The three main impediments were: misinterpretation of test result, complexity of quality control, and lack of training: 23 of the 112 FPs having volunteered to evaluate the rapid HIV tests followed the required training session. Sixty-nine tests were handed out, and three rapid HIV tests were used; the qualitative study involved 12 FPs. The participants all agreed on the difficult use of rapid HIV tests in daily practice. The main reasons were: too few opportunities or requests for use, complex handling, difficulties in proposing the test, fear of having to announce seropositivity, significantly longer consultation. CONCLUSION Although FPs are generally favorable to rapid HIV tests use in daily practice, the feasibility and contribution of rapid HIV tests are limited in family practice.
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Affiliation(s)
- C Poirier
- Service de médecine interne et maladies infectieuses, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 9, France; Université François-Rabelais, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France.
| | - S Aymeric
- Université François-Rabelais, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France; Service d'information médicale d'épidémiologie et d'économie de la santé, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 9, France; Équipe émergente éducation éthique santé, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France.
| | - L Grammatico-Guillon
- Université François-Rabelais, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France; Service d'information médicale d'épidémiologie et d'économie de la santé, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 9, France; Équipe émergente éducation éthique santé, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France
| | - J P Lebeau
- Université François-Rabelais, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France; Équipe émergente éducation éthique santé, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France; Département universitaire de médecine générale, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France
| | - L Bernard
- Service de médecine interne et maladies infectieuses, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 9, France; Université François-Rabelais, 60, rue du Plat-D'Étain, 37020 Tours cedex 1, France
| | - P Le Bret
- Réseau ville hôpital VIH 37, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 9, France
| | - G Le Moal
- COREVIH centre Poitou-Charentes, service de maladies infectieuses et tropicales, CHRU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - G Gras
- Service de médecine interne et maladies infectieuses, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 9, France
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Morisset J, Lands L, Yiannopoulos A, Bergeron C, Ferraro P, Poirier C. Outcomes after Lung Transplantation for Cystic Fibrosis: A Single Center Experience. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Boj JR, Poirier C, Hernandez M, Espasa E, Espanya A. Review: Laser soft tissue treatments for paediatric dental patients. Eur Arch Paediatr Dent 2012; 12:100-5. [DOI: 10.1007/bf03262788] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lachapelle P, Brosseau M, Houle-Peloquin M, Poirier C. P146 Validation of the COPD assessment test (CAT) in pulmonary rehabilitation: application to a cohort of mixed pulmonary diseases. Thorax 2011. [DOI: 10.1136/thoraxjnl-2011-201054c.146] [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: 11/04/2022]
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Koerner TB, Cléroux C, Poirier C, Cantin I, Alimkulov A, Elamparo H. Gluten contamination in the Canadian commercial oat supply. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 28:705-10. [PMID: 21623493 PMCID: PMC3118497 DOI: 10.1080/19440049.2011.579626] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A growing body of evidence suggests that a majority of people with celiac disease and on a gluten-free diet can safely consume pure oats in moderate amounts; however, previous studies have indicated that the commercial oat supply in other countries, and in Canada to some extent, is contaminated with other grains. This study has confirmed that the commercial oat supply in Canada is heavily contaminated with gluten from other grains. Approximately 88% of the oat samples (n = 133) were contaminated above 20 mg kg−1 and there were no differences between the oat types tested. Only one gluten-free variety of oats was analysed and it consistently provided negative results in all analyses. It is difficult to determine where the contamination originates, but there are possibilities for cross-contamination in the field, in the transport of the grain, in the storage of the grain, and in the milling and packaging facilities. It is clear from this study that only those products that have been certified ‘pure’ oats would be appropriate for a gluten-free diet.
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Affiliation(s)
- T B Koerner
- Bureau of Chemical Safety, Food Directorate, Health Canada, Ottawa, ON, Canada.
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Ptaszynski S, O'Carroll E, Al-Mot S, Al-Rabea A, Poirier C, Bergeron C. 578: Cysteinyl Leukotrienes/Prostaglandin E2 Balance Following Lung Transplantation. J Heart Lung Transplant 2010. [DOI: 10.1016/j.healun.2009.11.596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Cardinal H, Poirier C, Fugère J, Ferraro P, Girardin C. The Evolution of Kidney Function After Lung Transplantation: A Retrospective Cohort Study. Transplant Proc 2009; 41:3342-4. [DOI: 10.1016/j.transproceed.2009.08.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wyplosz B, Escaut L, Mihaila L, Stern J, Couzigou C, Poirier C, Teicher E, Vittecoq D. Tuberculose pulmonaire bacillifère : lever l’isolement après 3 semaines ou 3 examens microscopiques négatifs ? Rev Med Interne 2008. [DOI: 10.1016/j.revmed.2008.10.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Poirier C, van Effenterre D, Delord B, Johannes L, Roux D. Specific adsorption of functionalized colloids at the surface of living cells: a quantitative kinetic analysis of the receptor-mediated binding. Biochim Biophys Acta 2008; 1778:2450-7. [PMID: 18675781 DOI: 10.1016/j.bbamem.2008.07.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Revised: 06/24/2008] [Accepted: 07/08/2008] [Indexed: 12/27/2022]
Abstract
This paper presents a statistical experimental study of the adsorption of colloids onto the plasma membrane of living cells mediated by specific ligand-receptor interactions. The colloids consist of lipid multilamellar liposomes (spherulites) functionalized by Shiga toxin B-subunit (STxB), while cells are cervix carcinoma epithelial cells expressing the Shiga toxin receptor, the glycolipid globotriaosyl ceramide (Gb3). The specificity of the colloid adsorption is demonstrated using both confocal microscopy and flow cytometry, while a thorough cytometry study on living cells allows characterizing the kinetics of this specific adsorption. The final number of bound colloids and the characteristic adsorption time are shown to depend on bulk concentration, as expected for a thermodynamic equilibrium. However, the colloids appear to be irreversibly attached to the membrane. We interpret this apparent irreversibility as the result of a progressive recruitment of receptors. The methodology used here, whereby microscopic mechanisms are deduced from direct quantitative measurements on living cells, might allow the optimization of drug delivery systems or the quantification of virus infectivity.
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Affiliation(s)
- C Poirier
- Université Bordeaux 1, Centre de Recherche Paul Pascal, av. du Docteur Schweitzer, 33600 Pessac, France.
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Greffe S, Poirier C, Gros I, Fain O, Cruaud P, Abgrall S. T-05 Tuberculose multirésistante (TB-MDR) en Seine-Saint-Denis : prise en charge des cas index et dépistage des sujets contact. Med Mal Infect 2008. [DOI: 10.1016/s0399-077x(08)73234-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Poirier C, Gut-Gobert C, André M. Place du dépistage dans la lutte contre la tuberculose maladie de l’enfant. Rev Mal Respir 2008. [DOI: 10.1016/s0761-8425(08)56026-8] [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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Poirier C, De Volder A, Tranduy D, Scheiber C. Pattern recognition using a device substituting audition for vision in blindfolded sighted subjects. Neuropsychologia 2007; 45:1108-21. [PMID: 17116311 DOI: 10.1016/j.neuropsychologia.2006.09.018] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2005] [Revised: 09/18/2006] [Accepted: 09/24/2006] [Indexed: 11/27/2022]
Abstract
A major question in the field of sensory substitution concerns the nature of the perception generated by sensory substitution devices. In the present fMRI study, we investigated the neural substrates of pattern recognition through a device substituting audition for vision in blindfolded sighted subjects, before and after a short training period. Before training, pattern recognition recruited dorsal and ventral extra-striate areas. After training, the recruitment of these visual areas was found to have increased. These results suggest that visual imagery processes could be involved in pattern recognition and that perception through the substitution device could be visual-like.
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Affiliation(s)
- C Poirier
- Neural Rehabilitation Engineering Laboratory, Université Catholique de Louvain, Brussels, Belgium
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25
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Guerrin-Tran E, Thiolet JM, Rousseau C, Henry S, Poirier C, Che D, Vinas JM, Jarlier V, Robert J. An evaluation of data quality in a network for surveillance of Mycobacterium tuberculosis resistance to antituberculosis drugs in Ile-de-France region-2001-2002. Eur J Epidemiol 2006; 21:783-5. [PMID: 17106759 DOI: 10.1007/s10654-006-9069-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2006] [Accepted: 10/02/2006] [Indexed: 10/23/2022]
Abstract
We evaluated the French Azay-Mycobacteria network for surveillance of Mycobacterium tuberculosis drug resistance by matching data with those collected through the mandatory notification (MNTB). Sensitivity of Azay was 96% by capture-recapture analysis. Cases reported to MNTB were more often smear-positive than non-reported cases. Concordance of data collected for common cases was excellent for a majority of variables (k > 0.79), excepted for tuberculosis site (k = 0.52). These results suggest a good quality of the network.
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Affiliation(s)
- E Guerrin-Tran
- Centre National de Référence de la Résistance des Mycobactéries aux Antituberculeux, Laboratoire de Bactériologie-Hygiène, Université Pierre et Marie Curie, site Pitié-Salpêtrière, Paris, France
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26
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Abstract
Eruption cysts are benign cysts that appear on the mucosa of a tooth shortly before its eruption. The majority disappear on their own. If they hurt, bleed or are infected they may require surgical treatment to expose the tooth and drain the content. Here we present a clinical case of a six-year-old child with an eruption cyst on the permanent maxillary central left incisor, which was handled using treatment with an Er,Cr-YSGG laser. It did not require suture, there was no haemorrhage, swelling, infection or postoperative pain. The treatment of eruption cysts with this technique facilitates obtaining the cooperation of pediatric patients and makes behavior management by the pediatric dentist easier.
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Affiliation(s)
- J R Boj
- Department of Pediatric Dentistry, Dental School, University of Barcelona, Hospitalet, Spain.
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27
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Poirier C, Collignon O, Scheiber C, Renier L, Vanlierde A, Tranduy D, Veraart C, De Volder AG. Auditory motion perception activates visual motion areas in early blind subjects. Neuroimage 2006; 31:279-85. [PMID: 16443376 DOI: 10.1016/j.neuroimage.2005.11.036] [Citation(s) in RCA: 178] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2005] [Revised: 11/21/2005] [Accepted: 11/28/2005] [Indexed: 11/25/2022] Open
Abstract
We have previously shown that some visual motion areas can be specifically recruited by auditory motion processing in blindfolded sighted subjects [Poirier, C., Collignon, O., De Volder, A.G., Renier, L., Vanlierde, A., Tranduy, D., Scheiber, C., 2005. Specific activation of V5 brain area by auditory motion processing: an fMRI study. Brain Res. Cogn. Brain Res. 25, 650-658]. The present fMRI study investigated whether auditory motion processing may recruit the same brain areas in early blind subjects. The task consisted of simultaneously determining both the nature of a sound stimulus (pure tone or complex sound) and the presence or absence of its movement. When a movement was present, blind subjects had to identify its direction. Auditory motion processing, as compared to static sound processing, activated the brain network of auditory and visual motion processing classically observed in sighted subjects. Accordingly, brain areas previously considered as specific to visual motion processing could be specifically recruited in blind people by motion stimuli presented through the auditory modality. This indicates that the occipital cortex of blind people could be organized in a modular way, as in sighted people. The similarity of these results with those we previously observed in sighted subjects suggests that occipital recruitment in blind people could be mediated by the same anatomical connections as in sighted subjects.
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Affiliation(s)
- C Poirier
- Neural Rehabilitation Engineering Laboratory, Université catholique de Louvain, Av. Hippocrate, 54, UCL-54.46, B-1200 Brussels, Belgium
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28
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Poirier C, De La Rocque F, Lécuyer A, Ronsin N, Deforges L, Delacourt C, Delacourt C. Transmission de la tuberculose autour de cas index présentant une tuberculose pulmonaire avec examen direct négatif. Rev Mal Respir 2006. [DOI: 10.1016/s0761-8425(06)72469-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Renier L, Collignon O, Poirier C, Tranduy D, Vanlierde A, Bol A, Veraart C, De Volder AG. Cross-modal activation of visual cortex during depth perception using auditory substitution of vision. J Vis 2005. [DOI: 10.1167/5.8.902] [Citation(s) in RCA: 3] [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: 11/24/2022] Open
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30
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Glover PM, Newling B, Poirier C, Balcom BJ. A novel high temperature 1H NMR imaging probe for combustion studies: the behaviour of both a lit and unlit methane gas jet. J Magn Reson 2005; 176:79-86. [PMID: 15979361 DOI: 10.1016/j.jmr.2005.05.021] [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] [Subscribe] [Scholar Register] [Received: 03/16/2005] [Revised: 05/09/2005] [Accepted: 05/20/2005] [Indexed: 05/03/2023]
Abstract
The design of a NMR probe suitable for very high temperature samples is described. The loop gap resonator is water cooled and tuned to 100 MHz for use in a 2.4 T horizontal bore magnet. The probe has been specifically designed for imaging of the combustion process. An experiment is described in this paper which shows the behaviour of a methane gas jet when both lit and unlit. The jet of gas may be observed in its unlit state flowing at up to 2 ms(-1) from a 1 mm diameter orifice using a Single Point Imaging technique. Images of the lit gas show loss of nuclear polarisation within 3 mm of the orifice. A residual amount of un-decomposed gas is visible in the first few millimetres of the flame neck. A computational fluid dynamics model is used to verify the distribution of molecular methane, as well as the temperature of the flame.
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Affiliation(s)
- P M Glover
- Physics Department, University of New Brunswick, NB, Canada E3B 5A3.
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31
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Jauréguy F, Gutierez MC, Marie CJ, Poirier C, Panseurieu S, Pascal J, Valeyre D, Picard B, Vincent V, Dény P. [Epidemiological survey of a suspected nosocomial case of tuberculosis by spoligotyping]. ACTA ACUST UNITED AC 2005; 53:481-4. [PMID: 16084031 DOI: 10.1016/j.patbio.2005.07.001] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2005] [Accepted: 07/01/2005] [Indexed: 11/21/2022]
Abstract
Transmission of tuberculosis within hospitals has been increasingly recognized as a hazard for patients and health care workers. A case of pulmonary tuberculosis was detected in September 2003 in a nursing auxiliary working at Avicenne's Hospital. This 49 year-old woman was considered infected since April 2003. During this 6 months period, she worked in 23 distinct hospital units and could have contaminated patients and hospital staffs. The epidemiological survey was comprised for 1735 individuals (701 hospital staffs and 1034 patients). It encompassed clinical, para-clinical investigations and bacteriological investigations. Furthermore, between January 2003 and September 2004, a systematic comparison of 62 Mycobacterium tuberculosis strains isolated in the hospital was conducted by spoligotyping, a molecular typing method in order to access an eventual transmission. The nursing auxiliary's strain clearly showed a distinct spoligotype from the other investigated strains. This spoligotype was unique in the international spoligotype database. In this large epidemiological survey of a case of suspected nosocomial of tuberculosis, spoligotyping appeared as an interesting, easy and rapid method of molecular typing. It allowed to demonstrate that the nursing auxiliary tuberculosis case was unrelated to the others cases of tuberculosis diagnosed in the hospital during this period.
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Affiliation(s)
- F Jauréguy
- Service de bactériologie, virologie-hygiène, hôpital Avicenne, 125 rue de Stalingrad, 93009 Bobigny cedex, France.
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32
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Carbonne A, Poirier C, Antoniotti G, Burnat C, Delacourt C, Orzechowski C, Astagneau P, Bouvet E. Investigation of patient contacts of heath care workers with infectious tuberculosis: 6 cases in the Paris area. Int J Tuberc Lung Dis 2005; 9:848-52. [PMID: 16104629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023] Open
Abstract
SETTING From June to October 2003, six cases of infectious tuberculosis were reported in health care workers (HCWs) working in hospitals in the Paris area. OBJECTIVE To describe a method of investigation to identify tuberculosis infection in patient contacts. DESIGN To define the cohort of patient contacts, the risk of contamination was evaluated based on 1) the degree of infectiousness of the HCW, 2) patient characteristics, and 3) the proximity and length of exposure. RESULTS The number of patient contacts selected was very variable. A small proportion was investigated in consultation, except for a paediatric service in which 43 patient contacts were identified and where the information was managed within the service. In this cohort, two patient contacts presented tuberculous infection with an unclear link with the infectious HCW. In adults, the analysis of the information gathered was difficult due to the different screening practices used. CONCLUSION These results show the importance of better targeting screening of patient contacts and of improving the detection of tuberculosis cases among HCWs.
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33
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Massart C, Poirier C, Fergelot P, Fardel O, Gibassier J. Effect of sodium butyrate on doxorubicin resistance and expression of multidrug resistance genes in thyroid carcinoma cells. Anticancer Drugs 2005; 16:255-61. [PMID: 15711177 DOI: 10.1097/00001813-200503000-00004] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ATP-binding cassette (ABC) transporters [P-glycoprotein and multidrug resistance (MDR)-associated proteins (MRPs)] confer MDR to tumor cells. In this work, we investigated doxorubicin resistance in three thyroid carcinoma cell lines. The effects of sodium butyrate (NaB) on doxorubicin-induced cytotoxicity and on transcription of three MDR genes were also studied. Thyroid cell lines established from anaplastic (8505C) and two poorly differentiated follicular (FTC 238 and FTC 133) cancers were cultured for 24 or 48 h in the presence of NaB (0, 0.25, 0.5 and 1 mM) alone or combined with increased doses of doxorubicin. Cytotoxicity was assessed using the MTT test. MDR1, MRP1 and MRP2 mRNA expression was studied by RT-PCR. After a 24- or 48-h incubation, doxorubicin alone induced cytotoxicity in the three cell lines. NaB significantly (p<0.0001) increased the doxorubicin-induced cytotoxicity. MRP1 transcripts were expressed in the three non-treated cell lines. MDR1 and MRP2 mRNAs were both present in 8505C, but absent in FTC 133 or FTC 238 cell lines, respectively. Treatment with NaB for 24 or 48 h induced no change in MRP1 and MRP2 levels, but increased MDR1 expression in 8505C and FTC 238 cell lines comparably to alkaline phosphatase activity. In conclusion, MRP1 and sometimes MDR1 and MRP2 are expressed in the tested cell lines. NaB potentiates doxorubicin-induced cytotoxicity independently of the ABC transporters. The combination of doxorubicin and NaB might have clinical implications for thyroid cancer therapy.
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Affiliation(s)
- C Massart
- UPRES 3889, CHU de Pontchaillou, Rennes, France.
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34
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Pfister L, Drogue G, Poirier C, Hoffmann L. Spatial variability of trends in hydrological extremes induced by orographically enhanced rainfall events due to westerly atmospheric circulations. Water Sci Technol 2005; 51:15-21. [PMID: 15918354] [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: 05/02/2023]
Abstract
Since the mid 1970s, the number of days with westerly atmospheric circulations has strongly increased during winter months. As a consequence, rainfall totals, rainfall event duration and intensity have been subject to significant positive trends throughout the Mosel river basin. However, the trends identified through the non-parametrical test named Kendall's tau have shown to be spatially varying. The intensity of the trends appears to be directly linked to orographic obstacles that are well known to have a strong influence on average rainfall totals. A direct consequence of the changes having affected winter rainfall under westerly atmospheric circulations on the one hand and the spatial variability of these changes on the other hand, is a spatially varying positive trend in maximum winter streamflow. Thus, even though a clear large-scale change has affected winter rainfall over the past decades, its intensity is either strongly moderated or enhanced by orographic obstacles. The related changes in streamflow are directly dependent on the spatial variability of the changed rainfall characteristics.
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Affiliation(s)
- L Pfister
- Public Research Center - Gabriel Lippmann, 162a avenue de la Faïencerie, L-1511 Luxembourg, Grand-Duchy of Luxembourg.
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35
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Affiliation(s)
- A Deschildre
- Unité de Pneumologie-Allergologie, Clinique de Pédiatrie, Hôpital Jeanne de Flandre, CHRU Lille, France
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36
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Thoreau N, Fain O, Babinet P, Lortholary O, Robineau M, Valeyre D, Boudon P, Desrues J, Glowinski J, Mechali D, Poirier C, Joudiou P, Rautureau J, Stirnemann J, Kettaneh A, Cruaud P, Thomas M. [Peritoneal tuberculosis: 27 cases in the suburbs of northeastern Paris]. Int J Tuberc Lung Dis 2002; 6:253-8. [PMID: 11936091] [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: 02/24/2023] Open
Abstract
SETTING Peritoneal tuberculosis did not disappear from France during the 1990s. OBJECTIVE To determine the characteristics of peritoneal tuberculosis in the north-eastern suburbs of Paris. METHOD A retrospective study of cases diagnosed with peritoneal tuberculosis between 1990 and 1998 in five suburban hospitals in the north-east region of Paris. RESULTS Twenty-seven cases of adult peritoneal tuberculosis were diagnosed. There were nine women and 18 men, with a mean age of 37.5 years, 88.9% of whom were foreign born. General and digestive symptoms--abdominal pain and/or ascites--were present in 96.3% of the cases. The mean delay in treatment was 30 days. Peritoneal involvement was isolated in 25.9% of cases, and associated with pulmonary tuberculosis in 40.7% or hepatic tuberculosis in 25.9%. Co-infection with HIV (human immunodeficiency virus) was present 14.8% of cases. Culture of ascites fluid, laparoscopy and/or laparotomy (n = 17), with directed biopsy, aided in the formal diagnosis of peritoneal tuberculosis in 59.2%. One relapse and one case of multiresistance were observed. The mean duration of treatment was 9 months (range 6-12 months). Three patients received treatment with corticosteroids, and 91.2% of the patients achieved cure without sequelae. CONCLUSION Peritoneal tuberculosis is not rare in the Paris region. The diagnosis should be suspected in case with ascites and fever, and can be confirmed by laparoscopy with sampling for bacteriology and histology. The methods of treatment need to be standardised.
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Affiliation(s)
- N Thoreau
- Service de Médecine Interne, de Maladies Infectieuses, Hôpital Delafontaine, Saint-Denis, France
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37
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Litor C, Poirier C, Tonnelat M, Mahieu N, Sorignet M, Kasper S, Iguelousene S, Gourci G. [Admission and initial examination of the cerebrovascular accident patient]. Soins 2001:34-5. [PMID: 12012682] [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] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- C Litor
- Unité neurovasculaire du service de neurologie du Pr Mas, CH Sainte-Anne, Paris
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38
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Fernandes M, Lespinasse F, Rotomondo F, Poirier C, Guenet JL, Gaudray P, Carle GF. Comparative mapping of two adjacent regions of MMU19 with their human counterpart on HSA11q13. Cytogenet Cell Genet 2000; 81:237-46. [PMID: 9730611 DOI: 10.1159/000015038] [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: 11/19/2022]
Abstract
High resolution physical maps of two adjacent regions of MMU19 were constructed in order to establish a comparative map between the pericentromeric region of MMU19 and its human counterpart on HSA11q13. These two physical maps span 2.5 and 0.5 megabases on MMU19. Long range restriction analysis and YAC contigs have been built, five genes were located on MMU19 and eight new STSs were generated. The 0.5-Mb map which has been positioned close to the centromere of MMU19, based on dual-color FISH experiments and genetic data, includes eight genes (Type I markers), three microsatellites (Type II markers) and five new STSs. The 2.5-Mb map is located more telomeric and contains seven genes, four microsatellites and four new STSs. Gene order and physical distances appear to be similar in human and in mouse in this 2.5-Mb region. Strikingly, the 0.5-Mb region has a similar size in human but gene order is shuffled. The overall comparative map shows that these two regions are inverted on MMU19 when compared with HSA11q13.
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Affiliation(s)
- M Fernandes
- CNRS/UNSA UMR 6549, Faculté de Médecine, Nice, France
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39
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Chauvière M, Poirier C, d'Hérin P, Kress M. The Knsl1 gene encoding the kinesin-related protein MmEg5 maps to mouse chromosome 19 and a related pseudogene maps to mouse chromosome 6. Cytogenet Cell Genet 2000; 89:16-7. [PMID: 10894929 DOI: 10.1159/000015582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- M Chauvière
- GMIFC CNRS-UPR 1983, Institut de Recherches sur le Cancer, Villejuif, France.
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40
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Soccal PM, Doyle RL, Jani A, Chang S, Akindipe OA, Poirier C, Pavlakis M. Quantification of cytotoxic T-cell gene transcripts in human lung transplantation. Transplantation 2000; 69:1923-7. [PMID: 10830232 DOI: 10.1097/00007890-200005150-00030] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 11/25/2022]
Abstract
BACKGROUND Differentiating between acute rejection and cytomegalovirus (CMV) infection is one of the major challenges of lung transplantation. The aims of this study were to: (1) quantify the transcription of the cytotoxic T lymphocyte (CTL) effector molecules in the bronchoalveolar lavage (BAL) of lung transplant recipients and (2) evaluate the clinical usefulness of this technique. METHODS Sixty-six single-lung, double-lung, or heart-lung transplant patients were prospectively enrolled in the study. BAL was performed either for routine surveillance or for acute graft dysfunction. RNA was extracted from BAL cell pellets and underwent competitive reverse transcription-assisted polymerase chain reaction (RT-PCR) for perforin, granzyme B, granulysin, and Fas ligand. Gene transcript analysis was compared to clinical diagnosis established by conventional methods [BAL microbiological and transbronchial biopsy (TBB) analyses]. RESULTS After exclusion of several BAL according to the study criteria, 62 BAL were submitted for data analysis. Significantly higher expression of all the analyzed transcripts was found during CMV infection, compared with each of the other defined diagnostic categories, namely nonsignificant pathology, acute rejection, and nonviral pulmonary infection. CONCLUSION Quantification by competitive RT-PCR of the CTL effector molecule transcripts (perforin, granzyme B, granulysin, and Fas ligand) could represent a valuable tool for the differential diagnosis of graft dysfunction in lung transplantation.
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Affiliation(s)
- P M Soccal
- Department of Internal Medicine, Stanford University Medical Center, California 94305-5236, USA
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41
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Scimeca JC, Franchi A, Trojani C, Parrinello H, Grosgeorge J, Robert C, Jaillon O, Poirier C, Gaudray P, Carle GF. The gene encoding the mouse homologue of the human osteoclast-specific 116-kDa V-ATPase subunit bears a deletion in osteosclerotic (oc/oc) mutants. Bone 2000; 26:207-13. [PMID: 10709991 DOI: 10.1016/s8756-3282(99)00278-1] [Citation(s) in RCA: 170] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Osteosclerosis (oc) is an autosomal recessive lethal mutation that impairs bone resorption by osteoclasts, and induces a general increase of bone density in affected mice. Genetic mapping of the oc mutation was used as a backbone in a positional cloning approach in the pericentromeric region of mouse chromosome 19. Perfect cosegregation of the osteopetrotic phenotype with polymorphic markers enabled the construction of a sequence-ready bacterial artificial chromosome (BAC) contig of this region. Genomic sequencing of a 200-kb area revealed the presence of the mouse homologue to the human gene encoding the osteoclast-specific 116-kDa subunit of the vacuolar proton pump. This gene was located recently on human 11q13, a genomic region conserved with proximal mouse chromosome 19. Sequencing of the 5' end of the gene in oc/oc mice showed a 1.6-kb deletion, including the translation start site, which impairs genuine transcription of this subunit. The inactivation of this osteoclast-specific vacuolar proton ATPase subunit could be responsible for the lack of this enzyme in the apical membranes of osteoclast cells in oc/oc mice, thereby preventing the resorption function of these cells, which leads to the osteopetrotic phenotype.
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Affiliation(s)
- J C Scimeca
- Instabilité et Altérations des Génomes, UMR6549 CNRS/UNSA, Faculté de Médecine de l'Université de Nice-Sophia Antipolis, Nice, France
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Choi YH, Leung AN, Miro S, Poirier C, Hunt S, Theodore J. Primary bronchogenic carcinoma after heart or lung transplantation: radiologic and clinical findings. J Thorac Imaging 2000; 15:36-40. [PMID: 10634661 DOI: 10.1097/00005382-200001000-00008] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Chronic immunosuppression in organ transplant recipients predisposes to the development of malignant disease. The authors describe their 29-year institutional experience of bronchogenic carcinoma developing after heart and lung transplantation. Seven cases of bronchogenic carcinoma were diagnosed in 1,119 heart and lung transplant recipients. Computed tomography scans and radiographs at time of diagnosis, as well as prior radiographs available in six patients were retrospectively analyzed by two radiologists in consensus. The seven cases involved six heart and one lung transplant recipients. Six patients were smokers with a mean smoking history of 66 pack-years. Mean time interval from transplantation to cancer detection was 25 months. Radiologic findings consisted of a solitary pulmonary nodule (n = 3), mass with satellite nodules (n = 1), and obstructive pneumonitis (n = 1). In the sixth patient, the cancer was not radiographically visible because of obscuration by adjacent fibrosis. On review, radiographic abnormalities were present a mean of 12 months prior to diagnosis in 66% of patients. In the heart or lung transplant population, bronchogenic carcinoma develops in recipients with extensive smoking histories. It presents radiographically as a nodule, mass, or obstructive pneumonitis, and is usually visible on radiographs before the time of diagnosis.
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Affiliation(s)
- Y H Choi
- Department of Radiology, Stanford University Medical Center, CA 94305-5105, USA
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43
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Bendib K, Poirier C, Croisille P, Roux JP, Revel D, Amiel M. [Characterization of arterial stenosis using 3D imaging. Comparison of 3 imaging techniques (MRI, spiral CT and 3D DSA) and 4 display methods (MIP, SR, MPVR, VA) by using physical phantoms)]. J Radiol 1999; 80:1561-7. [PMID: 10592913] [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: 02/14/2023]
Abstract
INTRODUCTION Accurate assessment of arterial stenosis is a major public health issue for the diagnosis and treatment of cardiovascular diseases. The number of imaging techniques and types of software for display of imaging data is increasing. Few studies that compare these different techniques are available in the literature. MATERIALS AND METHODS Using phantoms to reproduce the main types of arterial stenosis, the authors compared three 3D acquisition techniques (MRA, CTA, and 3D DSA) and four types of display methods (MIP, SR, MPVR, and VA). The degree, the shape, and the location of different types of stenoses were analyzed by three experienced observers during two successive readings. Intra- and inter-observer reproducibility were assessed. The results of the various acquisition techniques and display methods also were compared to the digital reference data (CFAO) of the physical phantoms. RESULTS The degree of intra- and inter-observer reproducibility for the assessment of shape and location of the stenoses was good. Visual assessment of the degree of stenosis showed significant differences between two observers as well as in two readings by one observer. The 3D DSA was the most accurate technique for assessing the degree of stenosis. CTA provided better results than MRA. MPVR provided an accurate assessment of the degree of the stenosis. 3D DSA and CTA assessed stenosis form and localization adequately, with no significant difference; both methods appeared to be more accurate than MRA. SR provided the best information on the eccentric nature of the stenosis. The shape was very well assessed by VA and MPVR. CONCLUSIONS Even though 3D DSA is the most accurate acquisition technique for visualization, the combined use of SR and MPVR appears to be the best compromise to describe the morphology and degree of stenosis. Further improvements in automatic 3D image processing could offer a better understanding and increased possibilities for assessing arterial stenosis.
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Affiliation(s)
- K Bendib
- CREATIS-UMR CNRS 5515, Département d'Imagerie Diagnostique et Thérapeutique, Hôpital L Pradel, Lyon
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44
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Affiliation(s)
- C Poirier
- Division of Experimental Animal Research, RIKEN, 3-1-1 Koyadai, Tsukuba, Ibaraki, Japan
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Wang J, Turjman F, Ongolo-Zogo P, Acevedo JC, Poirier C. Swine model of arterial bifurcation aneurysm. Chin Med J (Engl) 1999; 112:143-5. [PMID: 11593581] [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] Open
Abstract
OBJECTIVE To create an arterial bifurcation aneurysm model in swine and evaluate it with digital subtraction angiography (DSA). METHODS Ten swine were used for constructing the arterial bifurcation aneurysm models. Seven pigs underwent subsequent intraarterial DSA. Both surgical procedure and transarterial angiography were carried out under anesthesia with mechanical ventilation after tracheal intubation. RESULTS Bifurcation aneurysms were surgically created in ten animals. After surgical procedure, 2 pigs died from aneurysmal rupture and one died of anesthetic overdose. DSA was performed in all other 7 animals and it demonstrated 6 patent aneurysms and one occluded. Three of the 6 patent bifurcation aneurysms were wide-necked and 3 were narrow-necked. CONCLUSION Arterial bifurcation aneurysm model can be successfully constructed in swine. It will provide us with an in vivo model to observe and develop therapeutic devices, teach endovascular techniques, and study aneurysmal hemodynamics.
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Affiliation(s)
- J Wang
- Department of Radiology, Section of Interventional Radiology, First Hospital of Nanjing Medical University, Jiangsu Province Hospital, 300 Guangzhou Rd., Nanjing 210029, China
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Collins J, Müller NL, Leung AN, McGuinness G, Mergo PJ, Flint JD, Warner TF, Poirier C, Theodore J, Zander D, Yee HT. Epstein-Barr-virus-associated lymphoproliferative disease of the lung: CT and histologic findings. Radiology 1998; 208:749-59. [PMID: 9722856 DOI: 10.1148/radiology.208.3.9722856] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To assess the computed tomographic (CT) and histologic findings of intrathoracic lymphoproliferative disease (LPD) associated with the Epstein-Barr virus (EBV). MATERIALS AND METHODS The authors retrospectively reviewed the CT scans of the chest and the pathologic specimens obtained in 24 patients with histologically proved intrathoracic LPD and with positive serologic findings or immunohistochemical staining for EBV. Five patients had acquired immunodeficiency syndrome (AIDS); one had common variable immune deficiency; and 18 were receiving immunosuppressive therapy for heart, lung, or heart-lung (n =15) or bone marrow (n = 2) transplantation and vasculitis (n = 1). RESULTS Final diagnoses included malignant lymphoma (n = 15), polyclonal LPD (n = 8), and hyperplasia of bronchus-associated lymphoid tissue (n = 1). CT findings included multiple nodules (n = 21), lymphadenopathy (n = 9), areas of groundglass opacification (n = 8), septal thickening (n = 7), consolidation (n = 5), pleural effusion (n = 4), and solitary endobronchial lesion (n = 2). The nodules were 2-4 cm in diameter, involved mainly the middle and lower lung zones, and frequently had a predominantly peribronchovascular (n = 15) or subpleural (n = 14) distribution. CONCLUSION EBV-associated LPD may range from benign lymphoid hyperplasia to high-grade lymphoma. The most common CT manifestation consists of multiple nodules, frequently in a predominantly peribronchovascular or subpleural distribution.
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Affiliation(s)
- J Collins
- Department of Radiology, University of Wisconsin Hospital and Clinics, Madison 53792-3252, USA
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Affiliation(s)
- C Poirier
- Unité de Genetique des Mammiferes, Institut Pasteur, 75724 Paris Cedex 15, France
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Rhodes M, Straw R, Fernando S, Evans A, Lacey T, Dearlove A, Greystrong J, Walker J, Watson P, Weston P, Kelly M, Taylor D, Gibson K, Mundy C, Bourgade F, Poirier C, Simon D, Brunialti AL, Montagutelli X, Gu'enet JL, Haynes A, Brown SD. A high-resolution microsatellite map of the mouse genome. Genome Res 1998; 8:531-42. [PMID: 9582196 DOI: 10.1101/gr.8.5.531] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The European Collaborative Interspecific Backcross (EUCIB) resource was constructed for the purposes of high-resolution genetic mapping of the mouse genome (). The large Mus spretus/C57BL/6 backcross of 982 progeny has a genetic resolution of 0.3 cM at the 95% confidence level ( approximately 500 kb in the mouse genome). We have used the EUCIB mapping resource to develop a genome-wide high-resolution genetic map incorporating 3368 microsatellites. The microsatellites are distributed among 2302 genetically separated bins with 1.46 markers per bin on average. Average bin separation is 0.61 cM. This high-resolution genetic map will aid the construction of a robust physical map of the mouse genome.
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Affiliation(s)
- M Rhodes
- United Kingdom Human Genome Mapping Project (HGMP) Resource Centre, Hinxton CB10 1RQ, UK
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Poirier C, Poussard S, Faust DM, Imaizumi-Scherrer T, Weiss MC, Ducastaing A, Montarras D, Pinset C, Guénet JL. Mapping, cloning, cDNA sequence, and expression of the gene encoding the mouse micromolar calpain large subunit. Mamm Genome 1998; 9:388-9. [PMID: 9545498 DOI: 10.1007/s003359900776] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- C Poirier
- Unité de Génétique des Mammifères, Institut Pasteur, 25 rue du Docteur Roux, 75724 Paris Cedex 15, France
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Poirier C, Blot S, Fernandes M, Carle GF, Stanescu V, Stanescu R, Guénet JL. A high-resolution genetic map of mouse chromosome 19 encompassing the muscle-deficient osteochondrodystrophy (mdf-ocd) region. Mamm Genome 1998; 9:390-1. [PMID: 9545499 DOI: 10.1007/s003359900777] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- C Poirier
- Unité de Génétique des Mammifères, Institut Pasteur, 25 rue du Docteur Roux, 75724 Paris Cedex 15, France
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