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Lemaire J, Van der Hauwaert C, Savary G, Dewaeles E, Perrais M, Lo Guidice JM, Pottier N, Glowacki F, Cauffiez C. Cadmium-Induced Renal Cell Toxicity Is Associated With MicroRNA Deregulation. Int J Toxicol 2020; 39:103-114. [DOI: 10.1177/1091581819899039] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Cadmium is an environmental pollutant well known for its nephrotoxic effects. Nevertheless, mechanisms underlying nephrotoxicity continue to be elucidated. MicroRNAs (miRNAs) have emerged in recent years as modulators of xenobiotic-induced toxicity. In this context, our study aimed at elucidating whether miRNAs are involved in renal proximal tubular toxicity induced by cadmium exposure. We showed that cadmium exposure, in 2 distinct renal proximal tubular cell models (renal proximal tubular epithelial cell [RPTEC]/human telomerase reverse transcriptase [hTERT] and human kidney-2), resulted in cytotoxicity associated with morphological changes, overexpression of renal injury markers, and induction of apoptosis and inflammation processes. Cadmium exposure also resulted in miRNA modulation, including the significant upregulation of 38 miRNAs in RPTEC/hTERT cells. Most of these miRNAs are known to target genes whose coding proteins are involved in oxidative stress, inflammation, and apoptosis, leading to tissue remodeling. In conclusion, this study provides a list of dysregulated miRNAs which may play a role in the pathophysiology of cadmium-induced kidney damages and highlights promising cadmium molecular biomarkers that warrants to be further evaluated.
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Affiliation(s)
- J. Lemaire
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
| | - C. Van der Hauwaert
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
- Département de la Recherche en Santé, CHU Lille, Lille, France
| | - G. Savary
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
| | - E. Dewaeles
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
| | - M. Perrais
- UMR-S 1172-JPArc-Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer, Université de Lille, Lille, France
| | - J. M. Lo Guidice
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
| | - N. Pottier
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
- Service de Toxicologie et Génopathies, CHU Lille, Lille, France
| | - F. Glowacki
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
- Service de Néphrologie, CHU Lille, Lille, France
| | - C. Cauffiez
- EA 4483-IMPECS-IMPact of Environmental ChemicalS on Human Health, Université de Lille, Lille Cedex, France
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Eyheraguibel B, Leremboure M, Traikia M, Sancelme M, Bonhomme S, Fromageot D, Lemaire J, Lacoste J, Delort AM. Environmental scenarii for the degradation of oxo-polymers. Chemosphere 2018; 198:182-190. [PMID: 29421728 DOI: 10.1016/j.chemosphere.2018.01.153] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/18/2018] [Accepted: 01/28/2018] [Indexed: 06/08/2023]
Abstract
The fate of oxo-polymers in nature is strongly dependent on environmental conditions, mainly on the intensity and duration of sunshine, which vary with the season and the climate. In this work, we report the effect of different scenarii on the production and the molecular composition of oligomers released from oxo-biodegradable HDPE films. Under our experimental conditions, the duration of accelerated weathering corresponded to a period of 3 months to 3 years of exposure to outside conditions under temperate climate. In addition, the oligomers were extracted in three different solvents: i) water to mimics the natural environment; ii) acetone and chloroform to identify oligomers trapped in the polymer matrix. The combination of high-resolution mass spectrometry and 1H NMR spectroscopy gives an extensive picture of the relative concentrations and the structural compositions of the extracted oligomers in the different tested conditions. In particular, the masses, the number of oxygen and carbon atoms could be determined for up to 2283 molecules. Globally the concentration and the size of oligomers increased with the duration of extraction, the level of aging of the polymer and the use of non-polar solvents. Surprisingly, the presence of highly oxidized molecules in acetone and chloroform extract, suggested an important swelling of HPDE films in these solvents and a better diffusion of these oligomers in the matrix. In nature, the biodegradability of oligomers could result from processes occurring both at the molecular (oxidation) and the macromolecular (diffusion and release) levels.
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Affiliation(s)
- B Eyheraguibel
- Université Clermont Auvergne, CNRS, Sigma, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France.
| | - M Leremboure
- Université Clermont Auvergne, CNRS, Sigma, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France
| | - M Traikia
- Université Clermont Auvergne, CNRS, Sigma, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France
| | - M Sancelme
- Université Clermont Auvergne, CNRS, Sigma, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France
| | - S Bonhomme
- Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - D Fromageot
- Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - J Lemaire
- Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - J Lacoste
- Université Clermont Auvergne, CNRS, Sigma, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France; Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - A M Delort
- Université Clermont Auvergne, CNRS, Sigma, Institut de Chimie de Clermont-Ferrand, F-63000, Clermont-Ferrand, France
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Eyheraguibel B, Traikia M, Fontanella S, Sancelme M, Bonhomme S, Fromageot D, Lemaire J, Lauranson G, Lacoste J, Delort AM. Characterization of oxidized oligomers from polyethylene films by mass spectrometry and NMR spectroscopy before and after biodegradation by a Rhodococcus rhodochrous strain. Chemosphere 2017; 184:366-374. [PMID: 28605707 DOI: 10.1016/j.chemosphere.2017.05.137] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 05/19/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
The objective of this work was to develop a new approach to assess the specificity and the efficiency of biodegradation of oxidized oligomers extracted from aged HDPE polyethylene films and to bring insight on the mechanisms occurring during biodegradation. 1H NMR spectroscopy and LC Orbitrap™ mass spectrometry were combined together with data processing using Kendrick mass defect calculation and Van Krevelen Diagram. We showed that the molecular weight of extracted oligomers was lower than 850 Da with maximum chain length of 55 carbon atoms. The oligomers were divided into 11 classes of molecules with different oxidation state ranging from 0 to 10. All classes included series of chemically related compounds including up to 19 molecules. 95% of the soluble oligomers were assimilated by a strain of Rhodococcus rhodocchrous after 240 days of incubation. Large highly oxidized molecules completely disappeared while the other classes of molecules were still represented. Molecules containing 0-1 oxygen atom were less degraded. A strong shift to smaller molecules (<450 Da, 25 carbon atoms) was observed suggesting that longer molecules disappeared more rapidly than the smaller ones. It opens new perspectives on biodegradation processes as not only intracellular β-oxidation must be considered but also extracellular mechanisms leading to chain cleavages.
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Affiliation(s)
- B Eyheraguibel
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie (ICCF), F-63000, Clermont-Ferrand, France.
| | - M Traikia
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie (ICCF), F-63000, Clermont-Ferrand, France
| | - S Fontanella
- Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - M Sancelme
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie (ICCF), F-63000, Clermont-Ferrand, France
| | - S Bonhomme
- Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - D Fromageot
- Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - J Lemaire
- Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - G Lauranson
- Ribeyron SA, ZI Les Taillats, BP18, 43600, Sainte Sigolène, France
| | - J Lacoste
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie (ICCF), F-63000, Clermont-Ferrand, France; Centre National d'Evaluation de Photoprotection, 25 Avenue Blaise Pascal, 63178, Aubière Cedex, France
| | - A M Delort
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie (ICCF), F-63000, Clermont-Ferrand, France.
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Robert B, Bolte M, Lemaire J. Comportement photochimique des systèmes chrome (VI) et (III)-acrylamide en solution aqueuse. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1985820361] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Lemaire J, Rosière A, Bertrand C, Bihin B, Donckier JE, Michel LA. Surgery for massive splenomegaly. BJS Open 2017; 1:11-17. [PMID: 29951600 PMCID: PMC5989945 DOI: 10.1002/bjs5.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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] [Received: 01/30/2017] [Accepted: 02/08/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Splenectomy for massive splenomegaly (spleen weight more than 1·5 kg) is commonly believed to be hazardous and to provide poor palliation. The aim of this cohort study was to investigate these issues and examine the many definitions of massive splenomegaly to see whether a better tool might be proposed for preoperative evaluation of these patients. METHODS Morbidity and long-term outcomes were assessed in consecutive patients. Relief of pressure-volume-related symptoms and sustainable independence from transfusion in patients were used to ascertain the impact of splenectomy. RESULTS Splenectomy was performed in 56 patients, mainly for non-Hodgkin's lymphoma and myeloproliferative diseases. Median spleen weight was 2·3 (range 1·5-6·0) kg. Mortality at 180 days was zero, and the postoperative complication rate was 25 per cent (17 complications in 14 patients). At 2 years, relief of pain was maintained in 33 of 34 patients, with sustained independence from transfusion in 15 of 19 patients with anaemia and nine of 11 with thrombocytopenia. Spleen weight correlated negatively with BMI (P = 0·036). CONCLUSION Splenectomy for massive splenomegaly is safe and provides effective palliation. Provisional cut-off points relating to spleen size and BMI help to identify patients benefiting from a splenectomy, even those in a critical state.
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Affiliation(s)
- J Lemaire
- Surgical Services Université de Louvain - Medical School at Mont-Godinne University Hospital Yvoir Belgium
| | - A Rosière
- Surgical Services Université de Louvain - Medical School at Mont-Godinne University Hospital Yvoir Belgium
| | - C Bertrand
- Surgical Services Université de Louvain - Medical School at Mont-Godinne University Hospital Yvoir Belgium
| | - B Bihin
- Biostatistics Unit Université de Louvain - Medical School at Mont-Godinne University Hospital Yvoir Belgium
| | - J E Donckier
- Internal Medicine Services Université de Louvain - Medical School at Mont-Godinne University Hospital Yvoir Belgium
| | - L A Michel
- Surgical Services Université de Louvain - Medical School at Mont-Godinne University Hospital Yvoir Belgium
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Moreau J, Khalil T, Lemaire J, Magnier F, Dedieu V, Lapeyre M, Verrelle P, Biau J. Seconde radiochirurgie pour récidive locale de métastase cérébrale après échec d’une première radiochirurgie. Cancer Radiother 2016. [DOI: 10.1016/j.canrad.2016.08.003] [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: 10/21/2022]
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Bourgeois J, Laye M, Lemaire J, Leone E, Deudon A, Darmon N, Giaume C, Lafont V, Brinck-Jensen S, Dechamps A, König A, Robert P. Relearning of Activities of Daily Living: A Comparison of the Effectiveness of Three Learning Methods in Patients with Dementia of the Alzheimer Type. J Nutr Health Aging 2016; 20:48-55. [PMID: 26728933 DOI: 10.1007/s12603-016-0675-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study examined the effectiveness of three different learning methods: trial and error learning (TE), errorless learning (EL) and learning by modeling with spaced retrieval (MR) on the relearning process of IADL in mild-to-moderately severe Alzheimer's Dementia (AD) patients (n=52), using a 6-weeks randomized controlled trial design. The participants had to relearn three IADLs. Repeated-measure analyses during pre-intervention, post-intervention and 1-month delayed sessions were performed. All three learning methods were found to have similar efficiency. However, the intervention produced greater improvements in the actual performance of the IADL tasks than on their explicit knowledge. This study confirms that the relearning of IADL is possible with AD patients through individualized interventions, and that the improvements can be maintained even after the intervention.
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Affiliation(s)
- J Bourgeois
- J. Bourgeois, COBTEK, EA 7276, Université de Nice Sophia Antipolis, France,
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Sarret C, Lemaire J, Sontheimer A, Coste J, Pereira B, Feschet F, Roche B, Renou J, Boespflug‐Tanguy O. ISDN2014_0298: REMOVED: Cerebral atrophy is linked to clinical severity and worsens with aging in patients with Pelizaeus–Merzbacher disease and Spastic Paraplegia type 2. Int J Dev Neurosci 2015. [DOI: 10.1016/j.ijdevneu.2015.04.245] [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: 10/22/2022] Open
Affiliation(s)
| | | | | | - J. Coste
- IGCNC – Université d'AuvergneFrance
| | | | | | - B. Roche
- IGCNC – Université d'AuvergneFrance
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Chaix R, Coste A, Botella C, Loit M, De Schlichting E, Coll G, Irthum B, Lemaire J. Étude de paramètres de tractographie d’imagerie par tenseur de diffusion des nerfs trijumeaux chez des sujets sains. Neurochirurgie 2014. [DOI: 10.1016/j.neuchi.2014.10.058] [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]
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Moreau J, Biau J, Khalil T, Lemaire J, Dedieu V, Donnarieix D, Lapeyre M, Verrelle P. Radiochirurgie par arcthérapie des métastases cérébrales : analyse rétrospective des dossiers de 181 patients. Cancer Radiother 2014. [DOI: 10.1016/j.canrad.2014.07.036] [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]
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Abstract
A sixty years-old patient was admitted with a gastric tumor corresponding to an adenocarcinoma developed in ectopic pancreatic tissue. Hundred cases of gastric heterotopic pancreas are shown in literature. This entity may remain asymptomatic. Symptoms such abdominal pain are described as the result of tumour growth. Carcinogenesis of ectopic pancreas (EPa) is however rare. Diagnosis is rarely pre-operative because modern imaging depicts a gastric tumour with no more information. The only treatment is surgery, with a best interest in frozen sections to direct the procedure, in this case a total gastrectomy with D2 lymphadenectomy. Based on this case report, an analysis of the literature focusing on diagnosis and treatment is presented.
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Affiliation(s)
- J. Lemaire
- Department of Abdominal Surgery, Haine-Saint-Paul, Belgium
| | - T. Delaunoit
- Department of Medical Oncology and Gastroenterology, Centre Hospitalier Jolimont-Lobbes, Haine-Saint-Paul, Belgium
| | - G. Molle1
- Department of Abdominal Surgery, Haine-Saint-Paul, Belgium
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Mkannez G, Lemaire J, Guerfali F, Gustin C, Attia H, Sghaier R, Consortium S, Dellagi K, Renard P, Laouini D. MicroRNA expression profile in human macrophage in response to leishmania major infection. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Hemm-Ode S, Wettmann P, Kistler B, Behm P, Schkommodau E, Coste J, Lemaire J, Shah A. Intraoperative optical flow based tremor evaluation - a feasibility study. BIOMED ENG-BIOMED TE 2013; 58 Suppl 1:/j/bmte.2013.58.issue-s1-A/bmt-2013-4008/bmt-2013-4008.xml. [DOI: 10.1515/bmt-2013-4008] [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: 11/15/2022]
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Guay M, Clement P, Hamid A, Dube E, Sauvageau C, Boulianne N, Landry M, Lemaire J. P1-S6.41 Determinants of human papilloma virus vaccination (HPVV) among Quebec (Canada) teenagers. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.265] [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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Hampe O, Neumaier M, Boese AD, Lemaire J, Niedner-Schatteburg G, Kappes MM. Infrared multiphoton electron detachment spectroscopy of C762−. J Chem Phys 2009. [DOI: 10.1063/1.3224130] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Scuderi D, Correia CF, Balaj OP, Ohanessian G, Lemaire J, Maitre P. Structural Characterization by IRMPD Spectroscopy and DFT Calculations of Deprotonated Phosphorylated Amino Acids in the Gas Phase. Chemphyschem 2009; 10:1630-41. [DOI: 10.1002/cphc.200800856] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hublet A, Dili A, Lemaire J, Mansvelt B, Molle G, Bertrand C. Laparoscopic ultrasonography as a good alternative to intraoperative cholangiography (IOC) during laparoscopic cholecystectomy: results of prospective study. Acta Chir Belg 2009; 109:312-6. [PMID: 19943585 DOI: 10.1080/00015458.2009.11680431] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Intraoperative cholangiography (IOC), used routinely or selectively, is the standard method for bile duct imaging during cholecystectomy. Laparoscopic ultrasonography (LUS) has emerged as a possible, safe and quick alternative. This study examined the evolving use and the performance of these two methods as primary technique for routine bile duct imaging, so as to detect common bile duct stones (CBDS) and to prevent common bile duct injury (CBDI). A prospective database permitted to evaluate the results of the two methods in 968 consecutive cholecystectomies. Nine hundered and twenty five were performed by laparoscopy, 18 (1.9%) by laparotomy and 25 (2.6) necessitated a conversion. The systematic use of the IOC was gradually replaced by a systematic use of the LUS. The success to delineate and evaluate the CBD, the detection of a CBDS, any type of bile duct complication, especially of CBDI, were registered. All the CBDS suspected by LUS were controlled by IOC. The patients were followed during 1 and 6 months. Six hundred and eighty five IOC and 269 LUS were performed. The procedure was technically unsuccessful in 35 IOC (5.1%) (mainly due to difficulty in catheterising the cystic duct) and in 2 LUS (1%) (due to steatosis). Concerning the detection of CBDS, 31 were detected by IOC (4.5%) and 16 by LUS (6%). Five IOC were considered as false positive, 1 as false negative (sensitivity and specificity of 96,9 and 99,2%) and 1 LUS as false positive (sensitivity and specificity of 100 and 99,6%). Five CBDI were detected in the complete seria: 2 during the dissection before the IOC, 1 thermic injury, 1 late stenosis, 1 lateral stenosis by the cystic clip detected by LUS. However none of these CBDI could have been prevented by IOC. In our experience, in this prospective study, LUS has been certainly as effective as IOC as a primary imaging technique for bile duct. It permitted to detect CBDS with a high specificity and sensitivity, and CBDS and was not followed by an increase in CBDI.
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Thissen R, Bizau JM, Blancard C, Coreno M, Dehon C, Franceschi P, Giuliani A, Lemaire J, Nicolas C. Photoionization cross section of Xe+ ion in the pure 5p5 2P3/2 ground level. Phys Rev Lett 2008; 100:223001. [PMID: 18643418 DOI: 10.1103/physrevlett.100.223001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Indexed: 05/26/2023]
Abstract
Coupling an ion trap with synchrotron radiation is shown here to be a powerful approach to measure photoionization cross sections on ionic species relaxed in their ground state. The photoionization efficiency curve of Xe+ ions stored in a Fourier transform ion cyclotron resonance ion trap was recorded at ELETTRA in the 20-23 eV photon energy range. Absolute cross sections were derived by comparison of the photoionization yield of Xe+ with measurements from the ASTRID merged-beam experiment. Multiconfiguration Dirac-Fock calculations were performed for the interpretation of these new data.
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Affiliation(s)
- R Thissen
- Laboratoire de Planétologie de Grenoble, UMR 5109 du CNRS, Bâtiment D de Physique, B.P. 53, 38041 Grenoble, France
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Seydou M, Grégoire G, Liquier J, Lemaire J, Schermann JP, Desfrançois C. Experimental Observation of the Transition between Gas-Phase and Aqueous Solution Structures for Acetylcholine, Nicotine, and Muscarine Ions. J Am Chem Soc 2008; 130:4187-95. [DOI: 10.1021/ja710040p] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Mahamadou Seydou
- Laboratoire de Physique des lasers, UMR 7538 CNRS, Université Paris 13, 93430 Villetaneuse, France, Laboratoire de Biophysique Moléculaire, Cellulaire et Tissulaire UMR 7033 CNRS, Université Paris 13, 93017 Bobigny, France, and Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris XI, Bat. 350, 91405 Orsay Cedex, France
| | - Gilles Grégoire
- Laboratoire de Physique des lasers, UMR 7538 CNRS, Université Paris 13, 93430 Villetaneuse, France, Laboratoire de Biophysique Moléculaire, Cellulaire et Tissulaire UMR 7033 CNRS, Université Paris 13, 93017 Bobigny, France, and Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris XI, Bat. 350, 91405 Orsay Cedex, France
| | - Jean Liquier
- Laboratoire de Physique des lasers, UMR 7538 CNRS, Université Paris 13, 93430 Villetaneuse, France, Laboratoire de Biophysique Moléculaire, Cellulaire et Tissulaire UMR 7033 CNRS, Université Paris 13, 93017 Bobigny, France, and Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris XI, Bat. 350, 91405 Orsay Cedex, France
| | - J. Lemaire
- Laboratoire de Physique des lasers, UMR 7538 CNRS, Université Paris 13, 93430 Villetaneuse, France, Laboratoire de Biophysique Moléculaire, Cellulaire et Tissulaire UMR 7033 CNRS, Université Paris 13, 93017 Bobigny, France, and Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris XI, Bat. 350, 91405 Orsay Cedex, France
| | - Jean Pierre Schermann
- Laboratoire de Physique des lasers, UMR 7538 CNRS, Université Paris 13, 93430 Villetaneuse, France, Laboratoire de Biophysique Moléculaire, Cellulaire et Tissulaire UMR 7033 CNRS, Université Paris 13, 93017 Bobigny, France, and Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris XI, Bat. 350, 91405 Orsay Cedex, France
| | - Charles Desfrançois
- Laboratoire de Physique des lasers, UMR 7538 CNRS, Université Paris 13, 93430 Villetaneuse, France, Laboratoire de Biophysique Moléculaire, Cellulaire et Tissulaire UMR 7033 CNRS, Université Paris 13, 93017 Bobigny, France, and Laboratoire de Chimie Physique, UMR 8000 CNRS, Université Paris XI, Bat. 350, 91405 Orsay Cedex, France
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Dionet E, Deeb T, Morand D, Derost P, Lemaire J, Durif F. D - 4 Effet de la stimulation du noyau sous thalamique sur la douleur au cours de la maladie de Parkinson. Rev Neurol (Paris) 2007. [DOI: 10.1016/s0035-3787(07)90802-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chereau-Boudet I, de Chazeron I, Derost P, Ulla M, Lemaire J, Durif F, Llorca P. Stimulation of the subthalamic nucleus in parkinson's disease and mood disorders, one-year follow-up. Eur Psychiatry 2007. [DOI: 10.1016/j.eurpsy.2007.01.759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Grégoire G, Gaigeot MP, Marinica DC, Lemaire J, Schermann JP, Desfrançois C. Resonant infrared multiphoton dissociation spectroscopy of gas-phase protonated peptides. Experiments and Car–Parrinello dynamics at 300 K. Phys Chem Chem Phys 2007; 9:3082-97. [PMID: 17612732 DOI: 10.1039/b618094a] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The gas-phase structures of protonated peptides are studied by means of resonant infrared multiphoton dissociation spectroscopy (R-IRMPD) performed with a free electron laser. The peptide structures and protonation sites are obtained through comparison between experimental IR spectra and their prediction from quantum chemistry calculations. Two different analyses are conducted. It is first supposed that only well-defined conformations, sufficiently populated according to a Boltzmann distribution, contribute to the observed spectra. On the contrary, DFT-based Car-Parrinello molecular dynamics simulations show that at 300 K protonated peptides no longer possess well-defined structures, but rather dynamically explore the set of conformations considered in the first conventional approach.
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Affiliation(s)
- G Grégoire
- Laboratoire de Physique des Lasers UMR 7538 Institut Galilée, Université Paris 13, Villetaneuse, France.
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Siadoux S, Gabrillargues J, Coste J, Claise B, Chabert E, Michel J, Durif F, Lemaire J. IRM stéréotaxique de la région sous-thalamique : optimisation d’une séquence de repérage pré-opératoire pour la mise en place d’électrodes de stimulation profonde chronique. Neurochirurgie 2005. [DOI: 10.1016/s0028-3770(05)83526-x] [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: 11/17/2022]
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Caire F, Coste J, Gabrillargues J, Chabert E, Claise B, Derost P, Durif F, Lemaire J. Stimulation cérébrale profonde et déplacement d’électrode : évaluation à moyen terme. Neurochirurgie 2005. [DOI: 10.1016/s0028-3770(05)83597-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Mendes-Martin V, Ghannane H, Kémény J, Chazal J, Lemaire J. Granulome intracrânien postopératoire secondaire à des microfibres de coton : à propos d’un cas. Neurochirurgie 2005. [DOI: 10.1016/s0028-3770(05)83627-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Abstract
We assessed the impact of participating to clinical research among 1727 women with localized breast cancer. Using as referent individuals not treated according to guidelines for systemic therapy, the adjusted hazard ratio of death was 0.70 (95% confidence interval (CI): 0.54,0.90, p-value: 0.006) in those treated according to current guidelines and 0.45 (95% CI: 0.27,0.73, p-value: 0.001) in participants to research. Participation to clinical trials results in a substantial gain in survival.
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Affiliation(s)
- N Hébert-Croteau
- Direction des Systèmes de Soins et Services, Institut National de Santé Publique du Québec, 4835 ave. Christophe-Colomb, Qc, Montréal H2J 3G8, Canada.
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Siadoux S, Gabrillargues J, Lemaire J, Claise B, Chabert E, Michel J. CO-09 IRM et région sous thalamique : optimisation de séquence de repérage pré opératoire pour la mise en place d’électrodes de stimulation chronique. J Neuroradiol 2005. [DOI: 10.1016/s0150-9861(05)83035-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lerut J, Mathys J, Lemaire J, Van Thuyne V, Talpe S, Sempoux C, Verbaandert C, Ciccarelli O, Orlando G, Roggen F, De Reyck C, Gianello P, Wallemacq P, Latinne D. TACROLIMUS MONOTHERAPY (TAC-MONO) IN 100 ADULT LIVER TRANSPLANT (LT) RECIPIENTS: ONE YEAR RESULTS OF A PROSPECTIVE, RANDOMIZED, BLINDED, PLACEBO-CONTROLED, SINGLE CENTRE STUDY. Transplantation 2004. [DOI: 10.1097/00007890-200407271-00454] [Citation(s) in RCA: 5] [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: 11/25/2022]
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Lerut J, Matthys J, Lemaire J, Van Thuyne V, Ciccarelli O, Goffette P, Peeters A, Aunac S, Boddeus M, Carlier MA, Danse E, De Kock M, De Reyck C, Donataccio M, Geubel A, Gonze D, Goubau P, Latinne D, Laterre PF, Luts A, Cool G, Otte JB, Horsmans Y, Martinez J, Orlando G, Rahier J, Reding R, Reynaert M, Starkel P, Sempoux C, Talpe S, Van Obbergh L, Veyckemans F, Wallemacq P, Wittebolle X, Roggen F. Adult liver transplantation at UCL: update 2002. Acta Gastroenterol Belg 2004; 67:188-96. [PMID: 15285577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
The authors present the results of a single centre study of 587 liver transplants performed in 522 adults during the period 1984-2002. Results have improved significantly over time due to better pre-, peri- and post-transplant care. One, five, ten and fifteen year actuarial survivals for the whole patient group are 81.2; 69.8; 58.9 and 51.2%. The high incidence of de novo tumors (12.3%), of cardiovascular diseases (7.5%) and of end-stage renal function (3.6%) should be further incentives to tailor the immunosuppression to the individual patient and to direct the attention of the transplant physician to the long-term quality of life of the liver recipient.
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Affiliation(s)
- J Lerut
- Liver Transplant Program, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, 1200 Brussels, Belgium.
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Hébert-Croteau N, Brisson J, Lemaire J, Latreille J, Pineault R. Hospital caseload and participation to research are determinants of breast cancer outcomes. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)91002-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Hébert-Croteau N, Brisson J, Lemaire J, Latreille J. Do improved outcomes of breast cancer in participants to clinical trials result from better treatment, selective referral, or both? EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)91044-0] [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: 12/01/2022] Open
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Affiliation(s)
- V. Pierrard
- Belgian Institute for Space Aeronomy; Brussels Belgium
| | - H. Lamy
- Belgian Institute for Space Aeronomy; Brussels Belgium
| | - J. Lemaire
- Belgian Institute for Space Aeronomy; Brussels Belgium
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Mauclaire G, Lemaire J, Boissel P, Bellec G, Heninger M. MICRA: a compact permanent magnet Fourier transform ion cyclotron resonance mass spectrometer. Eur J Mass Spectrom (Chichester) 2004; 10:155-162. [PMID: 15103092 DOI: 10.1255/ejms.620] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
MICRA, a compact Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer is described. The amount of miniaturisation in this device, based on a 1.24 T permanent magnet, remains compatible with genuine FT-ICR performance and analytical power in the mass range 2-1000 m/z, with a mass resolving power of 73,000 at mass 132. A first application of the transportability is the repetitive coupling of MICRA with a large-scale source of IR photons, the free electron laser CLIO.
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Affiliation(s)
- G Mauclaire
- Laboratoire de Chimie Physique (UMR 8000, affiliated to CNRS), Bât. 350, Université Paris-Sud, 91405 Orsay cedex, France
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Lemaire J, Boissel P, Heninger M, Mauclaire G, Bellec G, Mestdagh H, Simon A, Le Caer S, Ortega JM, Glotin F, Maitre P. Gas phase infrared spectroscopy of selectively prepared ions. Phys Rev Lett 2002; 89:273002. [PMID: 12513202 DOI: 10.1103/physrevlett.89.273002] [Citation(s) in RCA: 186] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2002] [Indexed: 05/17/2023]
Abstract
The first example of direct structural characterization of polyaromatic ions by coupling a Fourier transform ion cyclotron resonance mass spectrometer with an infrared free-electron laser is presented. Measurement of the IR spectra of selectively prepared ionic reactive intermediates is allowed by the association of the high peak power and wide tunability of the laser with the flexibility of the spectrometer, where several mass selection and ion reaction steps can be combined, as demonstrated in the case of iron cation complexes of hydrocarbons. The present experimental setup opens the way to understanding chemical reaction paths.
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Affiliation(s)
- J Lemaire
- Laboratoire de Chimie Physique (UMR 8000-CNRS), Batiment 350, Université Paris XI, 91405 Orsay Cedex, France
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Loisel P, Lemaire J, Poitras S, Durand MJ, Champagne F, Stock S, Diallo B, Tremblay C. Cost-benefit and cost-effectiveness analysis of a disability prevention model for back pain management: a six year follow up study. Occup Environ Med 2002; 59:807-15. [PMID: 12468746 PMCID: PMC1763600 DOI: 10.1136/oem.59.12.807] [Citation(s) in RCA: 154] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS To test the long term cost-benefit and cost-effectiveness of the Sherbrooke model of management of subacute occupational back pain, combining an occupational and a clinical rehabilitation intervention. METHODS A randomised trial design with four arms was used: standard care, occupational arm, clinical arm, and Sherbrooke model arm (combined occupational and clinical interventions). From the Quebec WCB perspective, a cost-benefit (amount of consequence of disease costs saved) and cost-effectiveness analysis (amount of dollars spent for each saved day on full benefits) were calculated for each experimental arm of the study, compared to standard care. RESULTS At the mean follow up of 6.4 years, all experimental study arms showed a trend towards cost benefit and cost effectiveness. These results were owing to a small number of very costly cases. The largest number of days saved from benefits was in the Sherbrooke model arm. CONCLUSIONS A fully integrated disability prevention model for occupational back pain appeared to be cost beneficial for the workers' compensation board and to save more days on benefits than usual care or partial interventions. A limited number of cases were responsible for most of the long term disability costs, in accordance with occupational back pain epidemiology. However, further studies with larger samples will be necessary to confirm these results.
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Affiliation(s)
- P Loisel
- Department of Surgery (Division of Orthopedics), Université de Sherbrooke and Centre de recherche clinique en réadaptation au travail PREVICAP, Hôpital Charles LeMoyne, 1111, Longueuil, Québec, Canada, J4K 5G4.
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Dachev T, Tomov B, Matviichuk Y, Dimitrov P, Lemaire J, Gregoire G, Cyamukungu M, Schmitz H, Fujitaka K, Uchihori Y, Kitamura H, Reitz G, Beaujean R, Petrov V, Shurshakov V, Benghin V, Spurny F. Calibration results obtained with Liulin-4 type dosimeters. Adv Space Res 2002; 30:917-925. [PMID: 12539758 DOI: 10.1016/s0273-1177(02)00411-8] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The Mobile Radiation Exposure Control System's (Liulin-4 type) main purpose is to monitor simultaneously the doses and fluxes at 4 independent places. It can also be used for personnel dosimetry. The system consists of 4 battery-operated 256-channel dosimeters-spectrometers. We describe results obtained during the calibrations of the spectrometers at the Cyclotron facilities of the University of Louvain, Belgium and of the National Institute of Radiological Sciences-STA, Chiba, Japan with protons of energies up to 70 MeV. The angular sensitivities of the devices are studied and compared with Monte-Carlo predictions. We also present the results obtained at the HIMAC accelerator with 500 MeV/u Fe ions and at the CERN high energy radiation reference fields. Records made during airplane flights are shown and compared with the predictions of the CARI-6 model.
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Affiliation(s)
- Ts Dachev
- Solar-Terr. Influences Laboratory-BAS, Sofia, Bulgaria.
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Lemaire J. [Not Available]. Pensee Hommes 2001; 16:338-50. [PMID: 11635523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Mallégol J, Gonon L, Lemaire J, Gardette JL. Long-term behaviour of oil-based varnishes and paints 4. Influence of film thickness on the photooxidation. Polym Degrad Stab 2001. [DOI: 10.1016/s0141-3910(00)00170-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Claus S, De Roose J, Lemaire J, Spatzker S, Veys N, Zeier M. Report on training sessions at the Prishtina University Hospital Department of Nephrology and Dialysis Unit, 22-29 July 2000, by the Joint Action Nephrology Eastern Europe of ISN and EDTA/ERA. Nephrol Dial Transplant 2001; 16:701-3. [PMID: 11274262 DOI: 10.1093/ndt/16.4.701] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Claus
- University Hospital Ghent, Renal Division, Ghent, Belgium
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Loisel P, Gosselin L, Durand P, Lemaire J, Poitras S, Abenhaim L. Implementation of a participatory ergonomics program in the rehabilitation of workers suffering from subacute back pain. Appl Ergon 2001; 32:53-60. [PMID: 11209832 DOI: 10.1016/s0003-6870(00)00038-7] [Citation(s) in RCA: 52] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This paper describes a participatory ergonomics program aimed at early return to regular work of workers suffering from subacute occupational back pain and assesses the perceptions of the participants on the implementation of ergonomic solutions in the workplace. The participatory ergonomics program was used in the rehabilitation of workers suffering from subacute back pain for more than 6 weeks, a program that was associated with an increased rate of return to work. The perceptions of the participatory ergonomics participants were assessed 6 months after completion of the ergonomic intervention through a questionnaire sent to employer representatives, union representatives and injured workers of participating workplaces. About half of the ergonomic solutions were implemented according to the perception of the participants, with a substantial agreement between respondents.
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Affiliation(s)
- P Loisel
- Department of Surgery, Université de Sherbrooke, Québec, Canada.
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Poitras S, Loisel P, Prince F, Lemaire J. Disability measurement in persons with back pain: a validity study of spinal range of motion and velocity. Arch Phys Med Rehabil 2000; 81:1394-400. [PMID: 11030506 DOI: 10.1053/apmr.2000.9165] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [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: 12/26/2022]
Abstract
OBJECTIVE To evaluate the criterion validity and responsiveness to change of spine kinematic variables to assess disability in patients with low back pain. DESIGN Blinded comparison between spine kinematic variables, Oswestry disability questionnaire scores, and work status. SETTING Multidisciplinary occupational rehabilitation clinic of a university hospital. PATIENTS Population-based cohort of 111 patients with subacute work-related back pain who were absent from regular work for more than 4 weeks because of back pain. INTERVENTIONS This study was part of a population-based randomized clinical trial. Patients were randomized to 4 different methods of management: usual care, rehabilitation, ergonomics, or rehabilitation and ergonomics. MAIN OUTCOME MEASURES Oswestry disability questionnaire, kinematic analysis of the spine during flexion and extension of the trunk, and work status were collected at weeks 4, 12, 24, and 52 after the back accident. RESULTS Kinematic variables were poorly to moderately related to work status and Oswestry questionnaire scores. Kinematic variables were also unresponsive to change in work status and Oswestry questionnaire scores over time. CONCLUSION Spine kinematics during flexion and extension of the trunk do not appear to be a valid measure of disability in patients with subacute and chronic back pain.
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Affiliation(s)
- S Poitras
- Centre de Recherche Clinique, Hôpital Charles-LeMoyne, Greenfield Park, Québec, Canada
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Mercier B, Barclais A, Botte C, Cantalube J, Coste J, Defer C, Gautreau C, Giannoli C, Halfon P, Lepot I, Loiseau P, Martial J, Montcharmont P, Merel P, Ouzan D, Ravera N, Follana J, Césaire R, Janot C, Lemaire J, De Micco P, Vezon G, Férec C. Prevalence of GBV C/HGV RNA and GBV C/HGV antibodies in French volunteer blood donors: results of a collaborative study. Vox Sang 2000; 76:166-9. [PMID: 10341332 DOI: 10.1159/000031043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVES Posttransfusion hepatitis still occurs at an incidence of about 1 in 118,000 for HBV and 1 in 220,000 for HCV. This collaborative study aimed to determine the prevalence of a novel flavivirus, GBV-C/HGV, even though its role in transfusion-associated hepatitis is uncertain. MATERIALS AND METHODS GBV-C/HGV RNA was detected by PCR using either the Boehringer detection kit or by primers previously described. HGV antibodies were detected by a serological assay from Boehringer. RESULTS The observed GBV-C/HGV RNA frequency was 3.4%. HGV antibodies occurred in 9.5% of donors. CONCLUSION In our study, 12. 9% of the donors had been in contact with the GBV-C/HGV virus.
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Affiliation(s)
- B Mercier
- Etablissement de Transfusion Sanguine (ETS) de Bretagne Occidentale and CHU Morvan, Brest, France.
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Lemaire J, Subramanian K, Asch DA. Genetic testing for breast and ovarian cancer: implications for life insurance. LDI Issue Brief 2000; 5:1-4. [PMID: 12523344] [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: 02/28/2023]
Abstract
As the science of genetic testing progresses, the debate surrounding the uses of genetic information intensifies. In February, President Clinton signed an executive order prohibiting federal agencies from using such information to make hiring, promotion, or placement decisions. Concerns about privacy and discrimination have led many states to propose or enact statutes that prohibit health insurers from using genetic test results in their underwriting decisions. However, few statutes address access to these results by the life insurance industry. This Issue Brief summarizes the current debate on whether life insurers should have access to genetic testing information for breast and ovarian cancer, and provides actuarial insight into the potential effect of such testing on the voluntary term insurance market.
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Delor-Jestin F, Lacoste J, Barrois-Oudin N, Cardinet C, Lemaire J. Photo-, thermal and natural ageing of ethylene–propylene–diene monomer (EPDM) rubber used in automotive applications. Influence of carbon black, crosslinking and stabilizing agents. Polym Degrad Stab 2000. [DOI: 10.1016/s0141-3910(99)00147-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Space travel causes rapid and pronounced skeletal muscle wasting in humans that reduces their long-term flight capabilities. To develop effective countermeasures, the basis of this atrophy needs to be better understood. Space travel may cause muscle atrophy indirectly by altering circulating levels of factors such as growth hormone, glucocorticoids, and anabolic steroids and/or by a direct effect on the muscle fibers themselves. To determine whether skeletal muscle cells are directly affected by space travel, tissue-cultured avian skeletal muscle cells were tissue engineered into bioartificial muscles and flown in perfusion bioreactors for 9 to 10 days aboard the Space Transportation System (STS, i.e., Space Shuttle). Significant muscle fiber atrophy occurred due to a decrease in protein synthesis rates without alterations in protein degradation. Return of the muscle cells to Earth stimulated protein synthesis rates of both muscle-specific and extracellular matrix proteins relative to ground controls. These results show for the first time that skeletal muscle fibers are directly responsive to space travel and should be a target for countermeasure development.
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Affiliation(s)
- H Vandenburgh
- Department of Pathology, Brown University School of Medicine and The Miriam Hospital, Providence, Rhode Island 02906, USA.
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