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Khan K, Caron C, Mahmoud I, Derish I, Schwertani A, Cecere R. Extracellular Vesicles as a Cell-free Therapy for Cardiac Repair: a Systematic Review and Meta-analysis of Randomized Controlled Preclinical Trials in Animal Myocardial Infarction Models. Stem Cell Rev Rep 2022; 18:1143-1167. [PMID: 35107768 DOI: 10.1007/s12015-021-10289-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2021] [Indexed: 12/14/2022]
Abstract
Stem cell therapy for cardiac regeneration has been gaining traction as a possible intervention for the reduction of the burden associated with MI and heart failure. However, stem cell therapies have several shortcomings, including poor engraftment, limited improvements in cardiac function, and possible teratogenicity. Recently, extracellular vesicles (EVs) from stem cell sources have been explored as a novel therapy to regenerate the injured myocardium in several animal MI trials. In this systematic review and meta-analysis, we investigate the use of stem cell-derived EVs for cardiac repair preclinical trials in animal MI models. Cochrane Library, Medline, Embase, PubMed, Scopus and Web of Science and grey literature (Canadian Agency for Drugs, Technologies in Health, and Google Scholar) were searched through August 20, 2020 and 37 articles were included in the final analysis. The overall effect size observed in EV-treated small animals after MI for ejection fraction (EF) was 10.85 [95 %CI: 8.79, 12.90] and for fractional shortening (FS) was 7.19 [95 %CI: 5.43, 8.96] compared to control-treated animals. The most abundant stem cell source used were mesenchymal stem cells which showed robust improvements in EF and FS (MD = 11.89 [95 % CI: 9.44, 14.34] and MD = 6.96 [95 % CI: 4.97, 8.96], respectively). Significant publication bias was detected for EF and FS outcomes. This study supports the use of EVs derived from stem cells as a novel therapy for cardiac repair after MI. Further investigation in larger animal studies may be necessary before clinical trials.PROSPERO registration number: CRD42019142218.
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Affiliation(s)
- Kashif Khan
- Division of Cardiology and Cardiac Surgery, Glen Campus - The Royal Victoria Hospital, McGill University Health Centre, 1001 Decarie Blvd, Block C, C07.1284, Montreal, Quebec, Canada
| | - Christophe Caron
- Division of Cardiology and Cardiac Surgery, Glen Campus - The Royal Victoria Hospital, McGill University Health Centre, 1001 Decarie Blvd, Block C, C07.1284, Montreal, Quebec, Canada
| | - Ibtisam Mahmoud
- McConnell Resource Centre, McGill University Health Centre, Montreal, Quebec, Canada
| | - Ida Derish
- Division of Cardiology and Cardiac Surgery, Glen Campus - The Royal Victoria Hospital, McGill University Health Centre, 1001 Decarie Blvd, Block C, C07.1284, Montreal, Quebec, Canada
| | - Adel Schwertani
- Division of Cardiology and Cardiac Surgery, Glen Campus - The Royal Victoria Hospital, McGill University Health Centre, 1001 Decarie Blvd, Block C, C07.1284, Montreal, Quebec, Canada
| | - Renzo Cecere
- Division of Cardiology and Cardiac Surgery, Glen Campus - The Royal Victoria Hospital, McGill University Health Centre, 1001 Decarie Blvd, Block C, C07.1284, Montreal, Quebec, Canada.
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Dittami SM, Corre E, Brillet-Guéguen L, Lipinska AP, Pontoizeau N, Aite M, Avia K, Caron C, Cho CH, Collén J, Cormier A, Delage L, Doubleau S, Frioux C, Gobet A, González-Navarrete I, Groisillier A, Hervé C, Jollivet D, KleinJan H, Leblanc C, Liu X, Marie D, Markov GV, Minoche AE, Monsoor M, Pericard P, Perrineau MM, Peters AF, Siegel A, Siméon A, Trottier C, Yoon HS, Himmelbauer H, Boyen C, Tonon T. The genome of Ectocarpus subulatus - A highly stress-tolerant brown alga. Mar Genomics 2020; 52:100740. [PMID: 31937506 DOI: 10.1016/j.margen.2020.100740] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 12/11/2019] [Accepted: 01/01/2020] [Indexed: 11/20/2022]
Abstract
Brown algae are multicellular photosynthetic stramenopiles that colonize marine rocky shores worldwide. Ectocarpus sp. Ec32 has been established as a genomic model for brown algae. Here we present the genome and metabolic network of the closely related species, Ectocarpus subulatus Kützing, which is characterized by high abiotic stress tolerance. Since their separation, both strains show new traces of viral sequences and the activity of large retrotransposons, which may also be related to the expansion of a family of chlorophyll-binding proteins. Further features suspected to contribute to stress tolerance include an expanded family of heat shock proteins, the reduction of genes involved in the production of halogenated defence compounds, and the presence of fewer cell wall polysaccharide-modifying enzymes. Overall, E. subulatus has mainly lost members of gene families down-regulated in low salinities, and conserved those that were up-regulated in the same condition. However, 96% of genes that differed between the two examined Ectocarpus species, as well as all genes under positive selection, were found to encode proteins of unknown function. This underlines the uniqueness of brown algal stress tolerance mechanisms as well as the significance of establishing E. subulatus as a comparative model for future functional studies.
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Affiliation(s)
- Simon M Dittami
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France.
| | - Erwan Corre
- CNRS, Sorbonne Université, FR2424, ABiMS platform, Station Biologique de Roscoff, 29680 Roscoff, France
| | - Loraine Brillet-Guéguen
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France; CNRS, Sorbonne Université, FR2424, ABiMS platform, Station Biologique de Roscoff, 29680 Roscoff, France
| | - Agnieszka P Lipinska
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Noé Pontoizeau
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France; CNRS, Sorbonne Université, FR2424, ABiMS platform, Station Biologique de Roscoff, 29680 Roscoff, France
| | - Meziane Aite
- Univ Rennes, Inria, CNRS, IRISA, 35000 Rennes, France
| | - Komlan Avia
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France; Université de Strasbourg, INRA, SVQV UMR-A 1131, F-68000 Colmar, France
| | - Christophe Caron
- CNRS, Sorbonne Université, FR2424, ABiMS platform, Station Biologique de Roscoff, 29680 Roscoff, France
| | - Chung Hyun Cho
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jonas Collén
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Alexandre Cormier
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Ludovic Delage
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Sylvie Doubleau
- IRD, UMR DIADE, 911 Avenue Agropolis, BP 64501, 34394 Montpellier, France
| | | | - Angélique Gobet
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Irene González-Navarrete
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain
| | - Agnès Groisillier
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Cécile Hervé
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Didier Jollivet
- Sorbonne Université, CNRS, Adaptation and Diversity in the Marine Environment (ADME), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
| | - Hetty KleinJan
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Catherine Leblanc
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Xi Liu
- CNRS, Sorbonne Université, FR2424, ABiMS platform, Station Biologique de Roscoff, 29680 Roscoff, France
| | - Dominique Marie
- Sorbonne Université, CNRS, Adaptation and Diversity in the Marine Environment (ADME), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
| | - Gabriel V Markov
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - André E Minoche
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain; Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany
| | - Misharl Monsoor
- CNRS, Sorbonne Université, FR2424, ABiMS platform, Station Biologique de Roscoff, 29680 Roscoff, France
| | - Pierre Pericard
- CNRS, Sorbonne Université, FR2424, ABiMS platform, Station Biologique de Roscoff, 29680 Roscoff, France
| | - Marie-Mathilde Perrineau
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France; Scottish Association for Marine Science, Scottish Marine Institute, Oban PA37 1QA, United Kingdom
| | | | - Anne Siegel
- Univ Rennes, Inria, CNRS, IRISA, 35000 Rennes, France
| | - Amandine Siméon
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Camille Trottier
- Univ Rennes, Inria, CNRS, IRISA, 35000 Rennes, France; Laboratory of Digital Sciences of Nantes (LS2N) - University of Nantes, France
| | - Hwan Su Yoon
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Heinz Himmelbauer
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain; Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany; Department of Biotechnology, University of Natural Resources and Life Sciences (BOKU), Vienna, 1190 Vienna, Austria
| | - Catherine Boyen
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France
| | - Thierry Tonon
- Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff, 29680 Roscoff, France; Centre for Novel Agricultural Products, Department of Biology, University of York, York YO10 5DD, United Kingdom
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Caron C, Pluijmers B, Joosten K, Mathijssen I, Dunaway D, Padwa P, Wolvius E, Koudstaal M. Functional problems in patients with craniofacial microsomia. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.019] [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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Caron C, Goudemand J, Marey A, Beague D, Ducroux G, Drouvin F. Are Haemostatic and Fibrinolytic Parameters Predictors of Preeclampsia in Pregnancy-Associated Hypertension? Thromb Haemost 2018. [DOI: 10.1055/s-0038-1646429] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryThe plasma levels of several haemostatic and fibrinolytic parameters were measured before and after delivery in 61 hypertensive pregnant women of whom 22 developed preeclampsia, and compared to the results obtained in 42 normal pregnant women. In the two last weeks before delivery (D ≤ –15) tPA antigen, PAI-1 activity, vWF: Ag/FVIII: C ratio, ATIII activity and platelet count were found to be significantly different in the hypertensive pregnant women with and without preeclampsia. Combined all together, an association of three of these five parameters were found to be pathological (i.e.: tPA: Ag ≥19 ng/ml, PAI-1 activity ≥58 IU/ml, vWF: Ag/FVIII: C ratio 5≥2.6, ATIII activity ≤73%) in none of the hypertensive women without preeclampsia and in only 35% of the preeclamptic group. A positive correlation was demonstrated between vWF:Ag/FVIII:C ratio and tPA:antigen levels suggesting that both tPA and vWF: Ag could be considered as early indicators of a possible micro angiopathy occurring in preeclampsia. However, due to the high dispersion of the results, it appears that the investigated haemostatic and/or fibrinolytic criteria give only presumptive arguments before assigning risk for preeclampsia development among hypertensive pregnant women.
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Affiliation(s)
- C Caron
- Laboratoire d'Hématologie et Département d'Anesthésie et de Réanimation de la Clinique Gynécologique et Obstétricale, France
| | - J Goudemand
- Laboratoire d'Hématologie et Département d'Anesthésie et de Réanimation de la Clinique Gynécologique et Obstétricale, France
| | - A Marey
- Laboratoire d'Hématologie et Département d'Anesthésie et de Réanimation de la Clinique Gynécologique et Obstétricale, France
| | | | | | - F Drouvin
- Laboratoire d'Hématologie et Département d'Anesthésie et de Réanimation de la Clinique Gynécologique et Obstétricale, France
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Goudemand J, Caron C, De Prost D, Derlon A, Borg JY, Sampol J, Sié P. Evaluation of Sensitivity and Specificity of a Standardized Procedure Using Different Reagents for the Detection of Lupus Anticoagulants. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1655965] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryThis study was designed to test the sensitivity and specificity of a combination of 3 phospholipid-dependent assays performed with various reagents, for the detection of lupus anticoagulant (LA). Plasmas containing an LA (n = 56) or displaying various confounding pathologies [58 intrinsic pathway factor deficiencies, 9 factor VIII inhibitors, 28 plasmas from patients treated with an oral anticoagulant (OAC)] were selected. In a first step, the efficiency of each assay and reagent was assessed using the Receiving Operating Characteristic (ROC) method. Optimal cut-offs providing both sensitivity and specificity ≥80% were determined. The APTT assay and most of the phospholipid neutralization assays failed to discriminate factor VIII inhibitors from LA. In a second step, using the optimal cut-offs determined above, the results of all the possible combinations of the 3 assays performed with 4 different reagents were analyzed. Thirteen combinations of reagents allowed ≥ 80% of plasmas of each category (LA, factor deficiency or OAC) to be correctly classified (3/3 positive test results in LA-containing plasmas and 0/3 positive results in LA-negative samples).
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Affiliation(s)
- J Goudemand
- Laboratoire d’Hématologie, Hôpital Huriez, Lille
| | - C Caron
- Laboratoire d’Hématologie, Hôpital Huriez, Lille
| | - D De Prost
- Service d’Hématologie, Hôpital Bichat, Paris
| | - A Derlon
- Laboratoire d’Hématologie, CHRU Côte de Nacre, Caen
| | - J Y Borg
- Laboratoire d’Hématologie, Hôpital Charles Nicolle, Rouen
| | - J Sampol
- Laboratoire d’Hématologie, Faculté de Pharmacie, Marseille
| | - P Sié
- Laboratoire d’Hématologie, Hôpital Purpan, Toulouse, France
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Arvieux J, Darnige L, Caron C, Reber G, Bensa JC, Colomb MG. Development of an ELISA for Autoantibodies to Prothrombin Showing their Prevalence in Patients with Lupus Anticoagulants. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1649891] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummarySome lupus anticoagulants (LA) have been shown to be directed against phospholipid-bound prothrombin. While developing an ELISA to detect anti-prothrombin autoantibodies in patient serum or plasma, no or very low signal was observed using human prothrombin immobilized on plain polystyrene plates. In contrast, the same LA-positive samples bound specifically to prothrombin coated on γ-irradiated plates, depending on the radiation dose, in the absence of added calcium and phospholipid. Optimization of the assay required the addition of 0.1% Tween 20 to the buffers. Antibody specificity for immobilized prothrombin was ascertained by competition using liposome-bound prothrombin, since fluid-phase prothrombin competed poorly. Seventy-seven of 139 patients (55.4%) with LA related to a variety of underlying diseases possessed anti-prothrombin antibodies (27 IgG, 35 IgM and 15 both isotypes), either isolated or more often associated with anti-(β2 glycoprotein I (β2GPI) antibodies. These included 67-71% of the patients with systemic lupus erythematosus and related disorders, primary antiphospholipid antibody syndrome or drug-induced LA (autoimmune groups), but only 19-20% of those with infection or malignancy (p <0.001). As previously shown for anti-β2GPI antibodies, IgG2 was the predominant IgG subclass reactive with prothrombin. Thus, autoimmune patients with LA have a high incidence of antibodies to β2GPI and prothrombin, the binding of which could similarly require high antigen density and/or exposure of cryptic epitopes resulting from protein interaction with an irradiated (i. e. more anionic) polystyrene surface.
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Affiliation(s)
- J Arvieux
- The Laboratoire d’lmnnunologie, Centre de Transfusion Sanguine, Grenoble, France
| | - L Darnige
- The Département de Biologie Clinique, CH Compiègne, France
| | - C Caron
- The Laboratoire d’Hématologie B, CHU Lille, France
| | - G Reber
- The Haemostasis unit, Geneva University Hospital, Switzerland
| | - J C Bensa
- The Laboratoire d’lmnnunologie, Centre de Transfusion Sanguine, Grenoble, France
| | - M G Colomb
- The CEA Laboratoire d’lmmunochimie, Inserm U238, DBMS, CEN-G, Grenoble, France
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Preiss B, Black R, Caron C, Shapcott D. Graphic Summaries of Expert Knowledge for the Medical Curriculum: An Experiment in Second-Year Nephrology. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract:This study was conducted to test the effects of Concept Graphics on learning in clinical nephrology. Second-year medical students were exposed to summaries of the major renal pathologies presented as text with, or without Concept Graphics for 30 minutes, followed by a quiz. Concept Graphics summarize diagnoses using icons that are metaphors of objects or processes. Of nine quiz questions, five were classified as correlation questions and four as memorization questions. The experimental group (n = 39) performed better than the controls (n = 33) in answering the correlation questions (p = 0.018). The experimental group mentioned more frequently than the controls two pathognomonic criteria of the nephritic syndrome (p = 0.02). Results of an opinion poll of the students, comparing sources used in their studies of nephrology were treated by correspondence analysis; the Concept Graphics ranked closest to the classification “very useful”.
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Querrec AL, Arnout J, Arnoux D, Borg JY, Caron C, Darnige L, Delahousse B, Reber G, Sié P. Quantification of Lupus Anticoagulants in Clinical Samples Using Anti- β2GP1 and Anti-Prothrombin Monoclonal Antibodies. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1616090] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryQuantification of lupus anticoagulant (LA) in clinical samples is hampered by the lack of a suitable standard of activity. We evaluated the use of mAbs displaying LA activity for this purpose. As most patient samples contain both β2Glycoprotein I (β2GP1) and prothrombin dependent LA, a combination of two mAbs, one of each specificity, was added to normal plasma in a concentration from 0 to 60 g/ml. Eight assay systems using different reagents and instruments were used. The calibration curves were linear for all but one, with marked differences between the responsiveness to each mAb. A panel of plasmas from 69 patients with persistent LA diagnosed using the SSCISTH criteria was tested. An antiphospholipid syndrome (APS) was present in 40, whereas 29 were asymptomatic. LA activities of individual plasmas varied between assays (p <10–4), but homogeneous subgroups were identified. In a majority of samples, LA activity displayed a prothrombin-dependent profile, with a variable contribution of β2GP1-dependent activity. The latter was associated to β2GP1 antibodies detected by solid-phase immunoassay. By using 3 dilute Russell viper venom time assays, higher LA titers were found in APS, compared to asymptomatic patients (p <0.05).
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Querrec L, Delahousse B, Caron C, Houbouyan L, Boutière B, Horellou M, Reber G, Sié P, Robert A. Control of Oral Anticoagulation in Patients with the Antiphospholipid Syndrome – Influence of the Lupus Anticoagulant on International Normalized Ratio. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1615146] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryThe recommended therapeutic range of International Normalized Ratio (INR) for oral anticoagulant treatment in patients with the antiphospholipid syndrome remains controversial. As a part of this controversy, it has been suggested that lupus anticoagulants (LA) could interfere with the determination of prothrombin time, thus questioning the validity of monitoring the treatment of these patients using INR. To clarify this point, we compared the values of INR obtained in the plasmas of two groups of patients, one without LA (n = 47), and the other with LA (n = 43). INR were determined using 8 different thromboplastin reagents on the same automated coagulation instrument. Chromogenic factor X, which is supposed to be insensitive to the presence of LA, was also measured. The results are the following: provided INR was calculated using calibrated reference plasmas, there was no significant difference between INR values obtained with the 8 reagents, both in the non-LA and in the LA groups (CV: 5.9 and 6.7%, respectively). Closer examination revealed that INR results obtained with one reagent (the recombinant thromboplastin Innovin) diverged from those of the 7 others, leading to an overestimation of INR, to a very large extent in some instances. However this effect was restricted to a subset of the patient population with LA (6 out of 43). Finally, the relationship between INR (average value obtained using the 8 reagents) and factor X was identical in non-LA and in LA patient groups. We conclude that, provided the reagents which display the LA interference are identified and excluded for this purpose, the INR system is valid for monitoring oral anticoagulant treatment in patients with LA.
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Guitton Y, Tremblay-Franco M, Le Corguillé G, Martin JF, Pétéra M, Roger-Mele P, Delabrière A, Goulitquer S, Monsoor M, Duperier C, Canlet C, Servien R, Tardivel P, Caron C, Giacomoni F, Thévenot EA. Create, run, share, publish, and reference your LC–MS, FIA–MS, GC–MS, and NMR data analysis workflows with the Workflow4Metabolomics 3.0 Galaxy online infrastructure for metabolomics. Int J Biochem Cell Biol 2017; 93:89-101. [DOI: 10.1016/j.biocel.2017.07.002] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 06/14/2017] [Accepted: 07/10/2017] [Indexed: 12/11/2022]
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van Rijswijk M, Beirnaert C, Caron C, Cascante M, Dominguez V, Dunn WB, Ebbels TMD, Giacomoni F, Gonzalez-Beltran A, Hankemeier T, Haug K, Izquierdo-Garcia JL, Jimenez RC, Jourdan F, Kale N, Klapa MI, Kohlbacher O, Koort K, Kultima K, Le Corguillé G, Moreno P, Moschonas NK, Neumann S, O'Donovan C, Reczko M, Rocca-Serra P, Rosato A, Salek RM, Sansone SA, Satagopam V, Schober D, Shimmo R, Spicer RA, Spjuth O, Thévenot EA, Viant MR, Weber RJM, Willighagen EL, Zanetti G, Steinbeck C. The future of metabolomics in ELIXIR. F1000Res 2017; 6. [PMID: 29043062 PMCID: PMC5627583 DOI: 10.12688/f1000research.12342.2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/31/2017] [Indexed: 01/11/2023] Open
Abstract
Metabolomics, the youngest of the major omics technologies, is supported by an active community of researchers and infrastructure developers across Europe. To coordinate and focus efforts around infrastructure building for metabolomics within Europe, a workshop on the "Future of metabolomics in ELIXIR" was organised at Frankfurt Airport in Germany. This one-day strategic workshop involved representatives of ELIXIR Nodes, members of the PhenoMeNal consortium developing an e-infrastructure that supports workflow-based metabolomics analysis pipelines, and experts from the international metabolomics community. The workshop established metabolite identification as the critical area, where a maximal impact of computational metabolomics and data management on other fields could be achieved. In particular, the existing four ELIXIR Use Cases, where the metabolomics community - both industry and academia - would benefit most, and which could be exhaustively mapped onto the current five ELIXIR Platforms were discussed. This opinion article is a call for support for a new ELIXIR metabolomics Use Case, which aligns with and complements the existing and planned ELIXIR Platforms and Use Cases.
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Affiliation(s)
- Merlijn van Rijswijk
- ELIXIR-NL, Dutch Techcentre for Life Sciences, Utrecht, 3503 RM, Netherlands.,Netherlands Metabolomics Center, Leiden, 2333 CC, Netherlands
| | - Charlie Beirnaert
- ADReM, Department of Mathematics and Computer Science, University of Antwerp, Antwerp, 2020, Belgium
| | - Christophe Caron
- ELIXIR-FR, French Institute of Bioinformatics, Gif-sur-Yvette, F-91198, France
| | - Marta Cascante
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Victoria Dominguez
- ELIXIR-FR, French Institute of Bioinformatics, Gif-sur-Yvette, F-91198, France
| | - Warwick B Dunn
- School of Biosciences, Phenome Centre Birmingham and Birmingham Metabolomics Training Centre, University of Birmingham, Birmingham, B15 2TT, UK
| | - Timothy M D Ebbels
- Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK
| | - Franck Giacomoni
- INRA, UNH, Human Nutrition Unit, PFEM, Metabolism Exploration Platform, MetaboHUB-Clermont, Clermont Auvergne University, Clermont-Ferrand, F-63000, France
| | | | - Thomas Hankemeier
- Netherlands Metabolomics Center, Leiden, 2333 CC, Netherlands.,Leiden Academic Centre for Drug Research, Leiden University, Leiden, 2300 RA, Netherlands
| | - Kenneth Haug
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, CB10 1SD, UK
| | - Jose L Izquierdo-Garcia
- Centro Nacional Investigaciones Cardiovasculares, Madrid, 28029, Spain.,CIBER de Enfermedades Respiratorias, Madrid, 28029 , Spain
| | | | - Fabien Jourdan
- Toxalim, UMR 1331, Université de Toulouse, Toulouse, F-31300, France
| | - Namrata Kale
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, CB10 1SD, UK
| | - Maria I Klapa
- Metabolic Engineering and Systems Biology Laboratory, Institute of Chemical Engineering Sciences, Foundation for Research & Technology - Hellas (FORTH/ICE-HT), Patras, GR-26504, Greece
| | - Oliver Kohlbacher
- Biomolecular Interactions, Max Planck Institute for Developmental Biology, Tübingen, 72076, Germany.,Department of Computer Science, University of Tübingen, Tübingen, 72076, Germany.,Center for Bioinformatics, University of Tübingen, Tübingen, 72076, Germany
| | - Kairi Koort
- The Centre of Excellence in Neural and Behavioural Sciences, Tallinn, Tallinn, 10120, Estonia.,School of Natural Sciences and Health, Tallinn University, 10120, 10120, Estonia
| | - Kim Kultima
- Department of Medical Sciences, Uppsala University, Uppsala, 752 36, Sweden
| | - Gildas Le Corguillé
- ELIXIR-FR, French Institute of Bioinformatics, Gif-sur-Yvette, F-91198, France.,UPMC, CNRS, FR2424, ABiMS, Station Biologique, Roscoff, F-29680, France
| | - Pablo Moreno
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, CB10 1SD, UK
| | - Nicholas K Moschonas
- Metabolic Engineering and Systems Biology Laboratory, Institute of Chemical Engineering Sciences, Foundation for Research & Technology - Hellas (FORTH/ICE-HT), Patras, GR-26504, Greece.,Department of General Biology, School of Medicine, University of Patras, Patras, GR-26504, Greece
| | - Steffen Neumann
- Department of Stress and Developmental Biology, Leibniz Institute of Plant Biochemistry, Halle, 06120, Germany
| | - Claire O'Donovan
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, CB10 1SD, UK
| | | | - Philippe Rocca-Serra
- Oxford e-Research Centre, Engineering Science Department, University of Oxford, Oxford, OX1 3QG, UK
| | - Antonio Rosato
- Magnetic Resonance Center, Interuniversity Consortium for Magnetic Resonance on MetalloProteins, University of Florence, Florence, 50121, Italy
| | - Reza M Salek
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, CB10 1SD, UK
| | - Susanna-Assunta Sansone
- Oxford e-Research Centre, Engineering Science Department, University of Oxford, Oxford, OX1 3QG, UK
| | - Venkata Satagopam
- Luxembourg Centre For Systems Biomedicine (LCSB), University of Luxembourg, Belvaux, L-4367, Luxembourg
| | - Daniel Schober
- Department of Stress and Developmental Biology, Leibniz Institute of Plant Biochemistry, Halle, 06120, Germany
| | - Ruth Shimmo
- The Centre of Excellence in Neural and Behavioural Sciences, Tallinn, Tallinn, 10120, Estonia.,School of Natural Sciences and Health, Tallinn University, 10120, 10120, Estonia
| | - Rachel A Spicer
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, CB10 1SD, UK
| | - Ola Spjuth
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, 752 36, Sweden
| | - Etienne A Thévenot
- CEA, LIST, Laboratory for Data Analysis and Systems' Intelligence, MetaboHUB, Gif-sur-Yvette, F-91191, France
| | - Mark R Viant
- School of Biosciences, Phenome Centre Birmingham and Birmingham Metabolomics Training Centre, University of Birmingham, Birmingham, B15 2TT, UK
| | - Ralf J M Weber
- School of Biosciences, Phenome Centre Birmingham and Birmingham Metabolomics Training Centre, University of Birmingham, Birmingham, B15 2TT, UK
| | - Egon L Willighagen
- Department of Bioinformatics - BiGCaT, NUTRIM, Maastricht University, Maastricht, NL-6200, Netherlands
| | - Gianluigi Zanetti
- CRS4, Data Intensive Computing Group, Ed.1 POLARIS, Pula, 09010, Italy
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12
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Caron C, Meley R, Le Cam Duchez V, Aillaud MF, Lavenu-Bombled C, Dutrillaux F, Flaujac C, Ryman A, Ternisien C, Lasne D, Galinat H, Pouplard C. Agreement between factor XIII activity and antigen assays in measurement of factor XIII: A French multicenter study of 147 human plasma samples. Int J Lab Hematol 2017; 39:279-285. [PMID: 28318109 DOI: 10.1111/ijlh.12621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 08/04/2016] [Accepted: 12/02/2016] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Factor XIII (FXIII) deficiency is a rare hemorrhagic disorder whose early diagnosis is crucial for appropriate treatment and prophylactic supplementation in cases of severe deficiency. International guidelines recommend a quantitative FXIII activity assay as first-line screening test. FXIII antigen measurement may be performed to establish the subtype of FXIII deficiency (FXIIID) when activity is decreased. METHODS The aim of this multicenter study was to evaluate the analytical and diagnostic levels of performance of a new latex immunoassay, K-Assay® FXIII reagent from Stago, for first-line measurement of FXIII antigen. Results were compared to those obtained with the Berichrom® FXIII chromogenic assay for measurement of FXIII activity. Of the 147 patient plasma samples, 138 were selected for analysis. RESULTS The accuracy was very good, with intercenter reproducibility close to 7%. Five groups were defined on FXIII activity level (<5% (n = 5), 5%-30% (n = 23), 30%-60% (n = 17), 60%-120% (n = 69), above 120% (n = 24)), without statistical differences between activity and antigen levels (P value >0.05). Correlation of the K-Assay® with the Berichrom® FXIII activity results was excellent (r = 0.919). Good agreement was established by the Bland and Altman method, with a bias of +9.4% on all samples, and of -1.4% for FXIII levels lower than 30%. One patient with afibrinogenemia showed low levels of Berichrom® FXIII activity but normal antigen level and clot solubility as expected. CONCLUSIONS The measurement of FXIII antigen using the K-Assay® is a reliable first-line tool for detection of FXIII deficiency when an activity assay is not available.
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Affiliation(s)
- C Caron
- Laboratoire d'Hématologie-Hémostase, CHU Lille, Lille, France
| | - R Meley
- Laboratoire d'Hématologie-Hémostase, CHU Saint-Etienne, Saint-Etienne, France
| | - V Le Cam Duchez
- Laboratoire d'Hématologie-Hémostase, CHU Rouen, Rouen, France
| | - M F Aillaud
- Laboratoire d'Hématologie-Hémostase, CHU Marseille, Marseille, France
| | - C Lavenu-Bombled
- Laboratoire d'Hématologie-Hémostase, CHU Le Kremlin-Bicêtre, Le Kremlin-Bicêtre, France
| | - F Dutrillaux
- Laboratoire d'Hématologie-Hémostase, CHU Dijon, Dijon, France
| | - C Flaujac
- Laboratoire d'Hématologie-Hémostase, CHU Paris Cochin, Paris, France
| | - A Ryman
- Laboratoire d'Hématologie-Hémostase, CHU Bordeaux, Bordeaux, France
| | - C Ternisien
- Laboratoire d'Hématologie-Hémostase, CHU Nantes, Nantes, France
| | - D Lasne
- Laboratoire d'Hématologie-Hémostase, CHU Paris-Necker, Paris, France
| | - H Galinat
- Laboratoire d'Hématologie-Hémostase, CHU Brest, Brest, France
| | - C Pouplard
- Laboratoire d'Hématologie-Hémostase, CHU Tours, Tours, France
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13
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Yelnik CM, Urbanski G, Drumez E, Sobanski V, Maillard H, Lanteri A, Morell-Dubois S, Caron C, Dubucquoi S, Launay D, Duhamel A, Hachulla E, Hatron PY, Lambert M. Persistent triple antiphospholipid antibody positivity as a strong risk factor of first thrombosis, in a long-term follow-up study of patients without history of thrombosis or obstetrical morbidity. Lupus 2016; 26:163-169. [PMID: 27432808 DOI: 10.1177/0961203316657433] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Introduction The long-term risk of first thrombosis and benefit of prophylaxis in antiphospholipid antibody (aPL) carriers without history of thrombosis or obstetrical morbidity is poorly known. This study aimed to evaluate the long-term rate and risk factors associated with a first thrombosis in those patients. Patients and methods After a prior study ended in December 2005 and was already published, we extended the follow-up period of our cohort of aPL carriers. Results Ninety-eight of the 103 patients of the previous study were included. The annual first thrombosis rate was 2.3% per patient-year during a median of 13 years (6-17). None of the baseline characteristics was predictive of risk of first thrombosis, but persistent aPL over time were associated with an increased risk. The stronger association was found in triple aPL-positive carriers: OR 3.38 (95% CI: 1.24-9.22). Of note, conversely to our previous findings, no benefit of aspirin prophylaxis was observed. Conclusion The risk of first thrombosis in aPL carriers without history of thrombosis or obstetrical morbidity was significant, persisted linearly over time and was associated with persistent aPL. This risk was especially increased in triple aPL-positive carriers, in whom a close follow-up seems to be necessary. Nevertheless, the benefit of aspirin prophylaxis remained unclear.
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Affiliation(s)
- C M Yelnik
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - G Urbanski
- 2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - E Drumez
- 3 Département de biostatistiques, EA2694, Université Lille 2, CHRU Lille, France
| | - V Sobanski
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - H Maillard
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - A Lanteri
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - S Morell-Dubois
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - C Caron
- 4 Laboratoire d'Hémostase, Centre de Biologie-Pathologie-Génétique, CHRU Lille, France
| | - S Dubucquoi
- 1 Université Lille 2, UFR Médecine, Lille, France.,5 Institut d'Immunologie, Centre de Biologie-Pathologie-Génétique, CHRU Lille, France
| | - D Launay
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - A Duhamel
- 3 Département de biostatistiques, EA2694, Université Lille 2, CHRU Lille, France
| | - E Hachulla
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - P Y Hatron
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
| | - M Lambert
- 1 Université Lille 2, UFR Médecine, Lille, France.,2 Service de Médecine Interne, Centre National de Référence des Maladies Systémiques Rares, Hôpital Claude Huriez, CHRU Lille, France
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14
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Sabau L, Terriou L, Provot F, Fourrier F, Roumier C, Caron C, Susen S, Ducloy-Bouthors AS. Are there any additional mechanisms for haemolysis in HELLP syndrome? Thromb Res 2016; 142:40-3. [PMID: 27128171 DOI: 10.1016/j.thromres.2016.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 03/06/2016] [Accepted: 03/12/2016] [Indexed: 01/26/2023]
Abstract
HELLP syndrome is a microangiopathy that leads to severe maternal complications. The objective of this study was to identify any additional mechanisms that could have contributed to HELLP syndrome-induced haemolysis. This is a pilot, prospective and observational study that lasted 9months. All patients with HELLP syndrome treated at academic tertiary care women hospital accepted to participate. Sixteen patients were included. In ten patients (63%), schizocytes were detected following a blood smear test. Six patients (38%) were diagnosed with a partial expression deficiency of proteins regulating the complement system (CD 55 or CD 59). In nine patients (56%), an activation of the complement classical pathway was detected. In two patients (13%), an ADAMTS 13 activity below 30% was detected. Three patients (19%) were diagnosed with a folate deficiency and one (6%) with an antiphospholipid syndrome. All patients developed maternal or fetal morbidity including nine (56%) an acute kidney injury. All patients but one had at least one additional mechanism that could contribute to haemolysis, besides a simple physical injury. Larger studies should be promoted to understand haemolysis in HELLP syndrome.
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Affiliation(s)
- L Sabau
- Service d'Anesthésie-Réanimation Obstétricale, Pôle d'Anesthésie-Réanimation, France
| | - L Terriou
- Institut d'Hématologie Transfusion, Centre Biologie Pathologie, France; Unité de Recherche EA2693, Université Lille Nord de France, Lille, France
| | | | - F Fourrier
- Service de Réanimation Polyvalente, Pôle de réanimation, France
| | - C Roumier
- Institut d'Hématologie Transfusion, Centre Biologie Pathologie, France; Unité de Recherche EA2693, Université Lille Nord de France, Lille, France
| | - C Caron
- Institut d'Hématologie Transfusion, Centre Biologie Pathologie, France; Unité de Recherche EA2693, Université Lille Nord de France, Lille, France
| | - S Susen
- Institut d'Hématologie Transfusion, Centre Biologie Pathologie, France; Unité de Recherche EA2693, Université Lille Nord de France, Lille, France
| | - A S Ducloy-Bouthors
- Service d'Anesthésie-Réanimation Obstétricale, Pôle d'Anesthésie-Réanimation, France
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15
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Pouplard C, Ternisien C, Desconclois C, Lasne D, Aillaud MF, Caron C. Discrepancies between one stage assay and chromogenic substrate assay in patients treated with recombinant or plasma-derived FVIII and usefulness of a specific standard in ReFacto AF®-treated patients. Haemophilia 2016; 22:e101-e103. [DOI: 10.1111/hae.12867] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2015] [Indexed: 11/30/2022]
Affiliation(s)
- C. Pouplard
- Laboratory of Haematology; Haemophilia Care Centre and University Hospital of Tours; Tours France
| | - C. Ternisien
- Laboratory of Haematology; Haemophilia Care Centre and University Hospital of Nantes; Nantes France
| | - C. Desconclois
- Laboratory of Haematology; Haemophilia Care Centre and University Hospital of Clamart; Clamart France
| | - D. Lasne
- Laboratory of Haematology; Haemophilia Care Centre and University Hospital of Paris Necker; Paris Necker France
| | - M.-F. Aillaud
- Laboratory of Haematology; Haemophilia Care Centre and University Hospital of Marseille; Marseille France
| | - C. Caron
- Laboratory of Haematology; Haemophilia Care Centre and University Hospital of Lille; Lille France
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16
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Boeuf D, Audic S, Brillet-Guéguen L, Caron C, Jeanthon C. MicRhoDE: a curated database for the analysis of microbial rhodopsin diversity and evolution. Database (Oxford) 2015; 2015:bav080. [PMID: 26286928 PMCID: PMC4539915 DOI: 10.1093/database/bav080] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 07/25/2015] [Indexed: 11/12/2022]
Abstract
Microbial rhodopsins are a diverse group of photoactive transmembrane proteins found in all three domains of life and in viruses. Today, microbial rhodopsin research is a flourishing research field in which new understandings of rhodopsin diversity, function and evolution are contributing to broader microbiological and molecular knowledge. Here, we describe MicRhoDE, a comprehensive, high-quality and freely accessible database that facilitates analysis of the diversity and evolution of microbial rhodopsins. Rhodopsin sequences isolated from a vast array of marine and terrestrial environments were manually collected and curated. To each rhodopsin sequence are associated related metadata, including predicted spectral tuning of the protein, putative activity and function, taxonomy for sequences that can be linked to a 16S rRNA gene, sampling date and location, and supporting literature. The database currently covers 7857 aligned sequences from more than 450 environmental samples or organisms. Based on a robust phylogenetic analysis, we introduce an operational classification system with multiple phylogenetic levels ranging from superclusters to species-level operational taxonomic units. An integrated pipeline for online sequence alignment and phylogenetic tree construction is also provided. With a user-friendly interface and integrated online bioinformatics tools, this unique resource should be highly valuable for upcoming studies of the biogeography, diversity, distribution and evolution of microbial rhodopsins. Database URL: http://micrhode.sb-roscoff.fr.
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Affiliation(s)
- Dominique Boeuf
- CNRS, UMR 7144, Marine Phototrophic Prokaryotes Team, Sorbonne Universités, UPMC Univ Paris 06, UMR 7144, Oceanic Plankton Group
| | - Stéphane Audic
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7144, Oceanic Plankton Group, CNRS, UMR 7144, Team Evolution des Protistes et Ecosystèmes Pélagiques and
| | | | - Christophe Caron
- CNRS, UPMC, FR2424, ABiMS, Station Biologique de Roscoff, F-29680 Roscoff, France
| | - Christian Jeanthon
- CNRS, UMR 7144, Marine Phototrophic Prokaryotes Team, Sorbonne Universités, UPMC Univ Paris 06, UMR 7144, Oceanic Plankton Group,
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17
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Medina-Rivera A, Defrance M, Sand O, Herrmann C, Castro-Mondragon JA, Delerce J, Jaeger S, Blanchet C, Vincens P, Caron C, Staines DM, Contreras-Moreira B, Artufel M, Charbonnier-Khamvongsa L, Hernandez C, Thieffry D, Thomas-Chollier M, van Helden J. RSAT 2015: Regulatory Sequence Analysis Tools. Nucleic Acids Res 2015; 43:W50-6. [PMID: 25904632 PMCID: PMC4489296 DOI: 10.1093/nar/gkv362] [Citation(s) in RCA: 188] [Impact Index Per Article: 20.9] [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: 02/06/2015] [Accepted: 04/07/2015] [Indexed: 11/13/2022] Open
Abstract
RSAT (Regulatory Sequence Analysis Tools) is a modular software suite for the analysis of cis-regulatory elements in genome sequences. Its main applications are (i) motif discovery, appropriate to genome-wide data sets like ChIP-seq, (ii) transcription factor binding motif analysis (quality assessment, comparisons and clustering), (iii) comparative genomics and (iv) analysis of regulatory variations. Nine new programs have been added to the 43 described in the 2011 NAR Web Software Issue, including a tool to extract sequences from a list of coordinates (fetch-sequences from UCSC), novel programs dedicated to the analysis of regulatory variants from GWAS or population genomics (retrieve-variation-seq and variation-scan), a program to cluster motifs and visualize the similarities as trees (matrix-clustering). To deal with the drastic increase of sequenced genomes, RSAT public sites have been reorganized into taxon-specific servers. The suite is well-documented with tutorials and published protocols. The software suite is available through Web sites, SOAP/WSDL Web services, virtual machines and stand-alone programs at http://www.rsat.eu/.
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Affiliation(s)
| | - Matthieu Defrance
- Laboratory of Cancer Epigenetics, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium
| | - Olivier Sand
- CNRS-UMR8199 Institut de Biologie de Lille, Génomique Intégrative et Modélisation des Maladies Métaboliques, 1, rue du Pr Calmette, 59000 Lille, France European Genomic Institute for Diabetes (EGID), F-3508, 59000 Lille, France
| | - Carl Herrmann
- UMR_S 1090 TAGC, INSERM, Marseille, France; Aix-Marseille Université, Marseille, France Institute of Pharmacy and Molecular Biotechnology, and Bioquant Center, University of Heidelberg, Im Neuenheimer Feld 267, Heidelberg 69120, Germany Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, Heidelberg 69120, Germany
| | | | - Jeremy Delerce
- UMR_S 1090 TAGC, INSERM, Marseille, France; Aix-Marseille Université, Marseille, France
| | - Sébastien Jaeger
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France Institut National de la Santé et de la Recherche Médicale (Inserm), U1104, Marseille, France Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Christophe Blanchet
- CNRS, UMS 3601, Institut Français de Bioinformatique, IFB-core, Avenue de la Terrasse, F-91190 Gif-sur-Yvette, France
| | - Pierre Vincens
- Ecole Normale Supérieure, Institut de Biologie de l'ENS, IBENS, Paris, F-75005, France Inserm, U1024, Paris, F-75005, France CNRS, UMR 8197, Paris, F-75005, France
| | - Christophe Caron
- Station Biologique/Service Informatique et Bio-informatique, Place Georges Teissier - CS 90074, 29688 Roscoff Cedex, France
| | - Daniel M Staines
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Bruno Contreras-Moreira
- Estación Experimental de Aula Dei/CSIC, Av. Montañana 1.005, 50059 Zaragoza, Spain Fundación ARAID, calle María de Luna 11, 50018 Zaragoza, Spain
| | - Marie Artufel
- UMR_S 1090 TAGC, INSERM, Marseille, France; Aix-Marseille Université, Marseille, France
| | | | - Céline Hernandez
- Ecole Normale Supérieure, Institut de Biologie de l'ENS, IBENS, Paris, F-75005, France Inserm, U1024, Paris, F-75005, France CNRS, UMR 8197, Paris, F-75005, France
| | - Denis Thieffry
- Ecole Normale Supérieure, Institut de Biologie de l'ENS, IBENS, Paris, F-75005, France Inserm, U1024, Paris, F-75005, France CNRS, UMR 8197, Paris, F-75005, France
| | - Morgane Thomas-Chollier
- Ecole Normale Supérieure, Institut de Biologie de l'ENS, IBENS, Paris, F-75005, France Inserm, U1024, Paris, F-75005, France CNRS, UMR 8197, Paris, F-75005, France
| | - Jacques van Helden
- European Genomic Institute for Diabetes (EGID), F-3508, 59000 Lille, France Laboratoire de Bioinformatique des Génomes et des Réseaux (BiGRe), Université Libre de Bruxelles, Campus Plaine, CP 263, Bld du Triomphe, B-1050 Bruxelles, Belgium
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18
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Giacomoni F, Le Corguillé G, Monsoor M, Landi M, Pericard P, Pétéra M, Duperier C, Tremblay-Franco M, Martin JF, Jacob D, Goulitquer S, Thévenot EA, Caron C. Workflow4Metabolomics: a collaborative research infrastructure for computational metabolomics. Bioinformatics 2014; 31:1493-5. [PMID: 25527831 PMCID: PMC4410648 DOI: 10.1093/bioinformatics/btu813] [Citation(s) in RCA: 264] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 12/04/2014] [Indexed: 11/12/2022] Open
Abstract
SUMMARY The complex, rapidly evolving field of computational metabolomics calls for collaborative infrastructures where the large volume of new algorithms for data pre-processing, statistical analysis and annotation can be readily integrated whatever the language, evaluated on reference datasets and chained to build ad hoc workflows for users. We have developed Workflow4Metabolomics (W4M), the first fully open-source and collaborative online platform for computational metabolomics. W4M is a virtual research environment built upon the Galaxy web-based platform technology. It enables ergonomic integration, exchange and running of individual modules and workflows. Alternatively, the whole W4M framework and computational tools can be downloaded as a virtual machine for local installation. AVAILABILITY AND IMPLEMENTATION http://workflow4metabolomics.org homepage enables users to open a private account and access the infrastructure. W4M is developed and maintained by the French Bioinformatics Institute (IFB) and the French Metabolomics and Fluxomics Infrastructure (MetaboHUB). CONTACT contact@workflow4metabolomics.org.
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Affiliation(s)
- Franck Giacomoni
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Gildas Le Corguillé
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Misharl Monsoor
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Marion Landi
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Pierre Pericard
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Mélanie Pétéra
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Christophe Duperier
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Marie Tremblay-Franco
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Jean-François Martin
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Daniel Jacob
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Sophie Goulitquer
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Etienne A Thévenot
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
| | - Christophe Caron
- INRA, UMR 1019, PFEM, 63122 Saint Genes Champanelle, CNRS, UPMC, FR2424, ABiMS, Station Biologique, 29680 Roscoff, INRA, UMR 1331, PF MetaToul-AXIOM, Toxalim, F-31027 Toulouse, INRA, Metabolome Facility of Bordeaux Functional Genomics Center, IBVM, 33140 Villenave d'Ornon and CEA, LIST, Laboratory for Data Analysis and Smart Systems (LADIS), MetaboHUB Paris, F-91191 Gif-sur-Yvette, France
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Dupuy M, Cazabat C, Boulin B, Bernier B, Baussart B, Foubert F, Raffin-Sanson R, Caron C, Bertherat B, Gaillard G. Silent, but not Unseen: Multimicrocystic Aspect on T2-Weighted MRI in Silent Corticotroph Adenomas. Skull Base Surg 2014. [DOI: 10.1055/s-0034-1384058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Pouplard C, Desconclois C, Sobas F, Aillaud MF, Ternisien C, Caron C. Does the presence of von Willebrand factor in FVIII-deficient plasma influences the measurement of FVIII inhibitor titres in haemophilia A patients? Int J Lab Hematol 2014; 37:125-32. [PMID: 24815078 DOI: 10.1111/ijlh.12253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 01/31/2014] [Accepted: 03/31/2014] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Reliable measurement of FVIII inhibitor is critical in the follow-up of haemophilia A patients. We performed a multicentre study to evaluate whether the presence of von Willebrand factor (VWF) in FVIII-deficient plasma (FVIII-DP) influences FVIII inhibitor titres. METHODS Six French haematology laboratories participated in this study. Three samples with varying FVIII inhibitor titres (1, 5 and 15 BU/mL) and one sample without any detectable FVIII inhibitor were tested using four different procedures for FVIII inhibitor assay. The Nijmegen method and a modified assay with imidazole were performed using FVIII-DP with and without VWF in the control mixture and as substrate plasma in the FVIII one stage assay (OSA). Each mixture (reference and test) was incubated for two hours at 37 °C with buffered normal pool plasma. RESULTS Higher inhibitor titres were measured in 5 and 15 BU/mL samples when assays were performed with the Nijmegen method and FVIII-DP without VWF. When samples were diluted in imidazole buffer, similar inhibitor titres, close to expected values, were measured whether VWF was present in the FVIII-DP or not. The data obtained were also more accurate when residual FVIII activity levels between 40% and 60% were used to calculate inhibitor titres, despite a linear type I reaction kinetics. CONCLUSION These results support the hypothesis that reliable FVIII inhibitor titres can be measured without the use of FVIII-DP containing VWF when an imidazole-modified assay is used.
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Affiliation(s)
- C Pouplard
- Haemostasis Laboratory, UMR CNRS 7292, Hôpital Trousseau, University François Rabelais Tours, Tours, France
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Boissier E, Ranque B, Dougados J, Dupeux S, Georgin Lavialle S, Arlet JB, Pouchot J, Capron L, Caron C, Tapon Bretaudière J, Darnige L. Syndrome de Willebrand acquis : série de sept patients. Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.10.376] [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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22
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Le Gouellec N, Lambert M, Stavris C, Lefevre G, Maillard H, Vuye S, Hauspie C, Hachulla E, Hatron P, Caron C, Dubucquoi S. Les anticorps antiphosphatidyléthanolamine sont associés à un risque élevé de récidive thrombotique ! Rev Med Interne 2011. [DOI: 10.1016/j.revmed.2011.10.339] [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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23
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Lefèvre G, Lambert M, Bacri JL, Dubucquoi S, Quemeneur T, Caron C, Launay D, Houfflin-Debarge V, Hachulla E, Kyndt X, Subtil D, Hatron PY. Thrombotic events during long-term follow-up of obstetric antiphospholipid syndrome patients. Lupus 2011; 20:861-5. [PMID: 21546412 DOI: 10.1177/0961203310397080] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Antiphospholipid syndrome (APS) is a systemic autoimmune disorder characterized by arterial and/or venous thromboses and/or pregnancy-associated morbidity. Some patients develop only obstetric complications (obstetric APS), but data on the frequency of thrombotic events during the follow-up of these patients are scarce. This study was undertaken to evaluate the rate of thrombotic events after obstetric APS diagnosis according to the 2006 revised criteria. In total, 32 obstetric APS patients were retrospectively studied, with mean follow-up of 50 ± 37 months. After delivery, aspirin was prescribed to all patients as primary thrombosis prevention. The thrombosis rate was 3.3/100 patient-years and was 4.6, 4.5 and 10/100 patient-years when we considered at least two antiphospholipid antibody positivities (among lupus anticoagulant, anticardiolipin and anti-β2-glycoprotein-I), antinuclear antibody positivity or systemic lupus erythematosus-associated APS patients, respectively. The thrombosis rate was high after obstetric APS diagnosis, even for patients taking aspirin. Larger, prospective studies are needed to confirm this high frequency and determine the associated risk factors.
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Affiliation(s)
- G Lefèvre
- Department of Internal Medicine, National Reference Centre for Systemic Sclerosis, University Hospital, Université Lille Nord de France, Lille, France
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24
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Veyradier A, Caron C, Ternisien C, Wolf M, Trossaert M, Fressinaud E, Goudemand J. Validation of the first commercial ELISA for type 2N von Willebrand's disease diagnosis. Haemophilia 2011; 17:944-51. [PMID: 21371195 DOI: 10.1111/j.1365-2516.2011.02499.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Type 2N von Willebrand's disease (VWD) is characterized by a factor VIII (FVIII) deficiency and a low FVIII/VWF ratio related to a markedly decreased affinity of von Willebrand factor (VWF) to FVIII. Type 2N VWD is diagnosed using assays allowing the measurement of plasma VWF capacity to bind FVIII (VWF:FVIIIB). These assays, crucial in order to distinguish type 2N VWD patients from mild haemophiliacs A and haemophilia A carriers, remain exclusively homemade and limited to laboratories possessing a high level of expertise in VWD. We evaluated the first commercial ELISA (Asserachrom® VWF:FVIIIB; Stago) comparated to a reference method in a multicentric study involving 205 subjects: 60 healthy volunteers, 37 haemophiliacs A, 17 haemophilia A carriers, 37 patients with type 2N VWD, 9 heterozygous carriers for a 2N mutation and 45 patients with miscellaneous other types of VWD (all previously characterized). A diluted plasma sample adjusted to 10 IU dL(-1) of VWF:Ag was incubated with a rabbit antihuman VWF polyclonal antibody. After removing the endogenous FVIII, recombinant FVIII (rFVIII) was added and bound rFVIII was quantified using a peroxydase-conjugated mouse antihuman FVIII monoclonal antibody. The intra-assay and inter-assay reproducibility was satisfactory. In all subgroups, both methods were well correlated. All type 2N VWD patients exhibited a markedly decreased VWF:FVIIIB (lower than 15%) and all heterozygous 2N carriers had a moderately decreased VWF:FVIIIB (between 30% and 65%). All controls (healthy subjects, haemophiliacs A and haemophilia A carriers) had a normal VWF:FVIIIB (higher than 80%) except one healthy volunteer and three haemophiliacs who exhibited a moderately decreased VWF:FVIIIB suggesting a heterozygous status for a 2N mutation. In conclusion, the Asserachrom® VWF:FVIIIB is easy to perform, standardized and accurate for type 2N VWD diagnosis with a 100% sensitivity and specificity.
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Affiliation(s)
- A Veyradier
- Service d'Hématologie Biologique, Hôpital Antoine Béclère, Clamart Cedex, France.
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Caron C, Lestrat C, Marsal S, Escoffier E, Curtet S, Virolle V, Barbry P, Debernardi A, Brambilla C, Brambilla E, Rousseaux S, Khochbin S. Functional characterization of ATAD2 as a new cancer/testis factor and a predictor of poor prognosis in breast and lung cancers. Oncogene 2010; 29:5171-81. [PMID: 20581866 DOI: 10.1038/onc.2010.259] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cancer cells frequently express genes normally active in male germ cells. ATAD2 is one of them encoding a conserved factor harbouring an AAA type ATPase domain and a bromodomain. We show here that ATAD2 is highly expressed in testis as well as in many cancers of different origins and that its high expression is a strong predictor of rapid mortality in lung and breast cancers. These observations suggest that ATAD2 acts on upstream and basic cellular processes to enhance oncogenesis in a variety of unrelated cell types. Accordingly, our functional studies show that ATAD2 controls chromatin dynamics, genome transcriptional activities and apoptotic cell response. We could also highlight some of the important intrinsic properties of its two regulatory domains, including a functional cross-talk between the AAA ATPase domain and the bromodomain. Altogether, these data indicate that ATAD2 overexpression in somatic cells, by acting on basic properties of chromatin, may contribute to malignant transformation.
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El-Ekiaby M, Sayed MA, Caron C, Burnouf S, El-Sharkawy N, Goubran H, Radosevich M, Goudemand J, Blum D, de Melo L, Soulié V, Adam J, Burnouf T. Solvent-detergent filtered (S/D-F) fresh frozen plasma and cryoprecipitate minipools prepared in a newly designed integral disposable processing bag system. Transfus Med 2010; 20:48-61. [DOI: 10.1111/j.1365-3148.2009.00963.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [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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Tap J, Mondot S, Levenez F, Pelletier E, Caron C, Furet JP, Ugarte E, Muñoz-Tamayo R, Paslier DLE, Nalin R, Dore J, Leclerc M. Towards the human intestinal microbiota phylogenetic core. Environ Microbiol 2009; 11:2574-84. [PMID: 19601958 DOI: 10.1111/j.1462-2920.2009.01982.x] [Citation(s) in RCA: 593] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The paradox of a host specificity of the human faecal microbiota otherwise acknowledged as characterized by global functionalities conserved between humans led us to explore the existence of a phylogenetic core. We investigated the presence of a set of bacterial molecular species that would be altogether dominant and prevalent within the faecal microbiota of healthy humans. A total of 10 456 non-chimeric bacterial 16S rRNA sequences were obtained after cloning of PCR-amplified rDNA from 17 human faecal DNA samples. Using alignment or tetranucleotide frequency-based methods, 3180 operational taxonomic units (OTUs) were detected. The 16S rRNA sequences mainly belonged to the phyla Firmicutes (79.4%), Bacteroidetes (16.9%), Actinobacteria (2.5%), Proteobacteria (1%) and Verrumicrobia (0.1%). Interestingly, while most of OTUs appeared individual-specific, 2.1% were present in more than 50% of the samples and accounted for 35.8% of the total sequences. These 66 dominant and prevalent OTUs included members of the genera Faecalibacterium, Ruminococcus, Eubacterium, Dorea, Bacteroides, Alistipes and Bifidobacterium. Furthermore, 24 OTUs had cultured type strains representatives which should be subjected to genome sequence with a high degree of priority. Strikingly, 52 of these 66 OTUs were detected in at least three out of four recently published human faecal microbiota data sets, obtained with very different experimental procedures. A statistical model confirmed these OTUs prevalence. Despite the species richness and a high individual specificity, a limited number of OTUs is shared among individuals and might represent the phylogenetic core of the human intestinal microbiota. Its role in human health deserves further study.
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Affiliation(s)
- Julien Tap
- INRA, UEPSD, UR910, 78350 Jouy en Josas, France
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Rousseaux S, Gaucher J, Thevenon J, Caron C, Vitte AL, Curtet S, Derobertis C, Faure AK, Levy R, Aknin-Seifer I, Ravel C, Siffroi JP, Mc Elreavey K, Lejeune H, Jimenez C, Hennebicq S, Khochbin S. [Spermiogenesis: histone acetylation triggers male genome reprogramming]. ACTA ACUST UNITED AC 2009; 37:519-22. [PMID: 19447664 DOI: 10.1016/j.gyobfe.2009.04.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Accepted: 04/03/2009] [Indexed: 10/20/2022]
Abstract
During their post-meiotic maturation, male germ cells undergo an extensive reorganization of their genome, during which histones become globally hyperacetylated, are then removed and progressively replaced by transition proteins and finally by protamines. The latter are known to tightly associate with DNA in the mature sperm cell. Although this is a highly conserved and fundamental biological process, which is a necessary prerequisite for the transmission of the male genome to the next generation, its molecular basis remains mostly unknown. We have identified several key factors involved in this process, and their detailed functional study has enabled us to propose the first model describing molecular mechanisms involved in post-meiotic male genome reprogramming. One of them, Bromodomain Testis Specific (BRDT), has been the focus of particular attention since it possesses the unique ability to specifically induce a dramatic compaction of acetylated chromatin. Interestingly, a mutation was found homozygous in infertile men which, according to our structural and functional studies, disrupts the function of the protein. A combination of molecular structural and genetic approaches has led to a comprehensive understanding of new major actors involved in the male genome reprogramming and transmission.
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Affiliation(s)
- S Rousseaux
- Inserm U823, université Joseph-Fourier, institut Albert-Bonniot, domaine de la Merci, 38706 Grenoble, France.
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Chiapello H, Gendrault A, Caron C, Blum J, Petit MA, El Karoui M. MOSAIC: an online database dedicated to the comparative genomics of bacterial strains at the intra-species level. BMC Bioinformatics 2008; 9:498. [PMID: 19038022 PMCID: PMC2607288 DOI: 10.1186/1471-2105-9-498] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [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: 09/11/2008] [Accepted: 11/27/2008] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The recent availability of complete sequences for numerous closely related bacterial genomes opens up new challenges in comparative genomics. Several methods have been developed to align complete genomes at the nucleotide level but their use and the biological interpretation of results are not straightforward. It is therefore necessary to develop new resources to access, analyze, and visualize genome comparisons. DESCRIPTION Here we present recent developments on MOSAIC, a generalist comparative bacterial genome database. This database provides the bacteriologist community with easy access to comparisons of complete bacterial genomes at the intra-species level. The strategy we developed for comparison allows us to define two types of regions in bacterial genomes: backbone segments (i.e., regions conserved in all compared strains) and variable segments (i.e., regions that are either specific to or variable in one of the aligned genomes). Definition of these segments at the nucleotide level allows precise comparative and evolutionary analyses of both coding and non-coding regions of bacterial genomes. Such work is easily performed using the MOSAIC Web interface, which allows browsing and graphical visualization of genome comparisons. CONCLUSION The MOSAIC database now includes 493 pairwise comparisons and 35 multiple maximal comparisons representing 78 bacterial species. Genome conserved regions (backbones) and variable segments are presented in various formats for further analysis. A graphical interface allows visualization of aligned genomes and functional annotations. The MOSAIC database is available online at http://genome.jouy.inra.fr/mosaic.
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Affiliation(s)
- Hélène Chiapello
- INRA UR1077, Unité Mathématique, Informatique & Génome, Domaine de Vilvert, 78352, Jouy-en-Josas, France.
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Rousseaux S, Reynoird N, Escoffier E, Thevenon J, Caron C, Khochbin S. Epigenetic reprogramming of the male genome during gametogenesis and in the zygote. Reprod Biomed Online 2008; 16:492-503. [PMID: 18413057 DOI: 10.1016/s1472-6483(10)60456-7] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
During post-meiotic maturation, male germ cells undergo a formidable reorganization and condensation of their genome. During this phase most histones are globally acetylated and then replaced by sperm-specific basic proteins, named protamines, which compact the genome into a very specific structure within the sperm nucleus. Several studies suggest that this sperm-specific genome packaging structure conveys an important epigenetic message to the embryo. This paper reviews what is known about this fundamental, yet poorly understood, process, which involves not only global changes of the structure of the haploid genome, but also localized specific modifications of particular genomic regions, including pericentric heterochromatin and sex chromosomes. After fertilization, the male genome undergoes a drastic decondensation, and rapidly incorporates new histones. However, it remains different from the maternal genome, bearing specific epigenetic marks, especially in the pericentric heterochromatin region. The functional implications of male post-meiotic and post-fertilization genome reprogramming are not well known, but there is experimental evidence to show that it affects early embryonic development.
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Filangi O, Beausse Y, Assi A, Legrand L, Larré JM, Martin V, Collin O, Caron C, Leroy H, Allouche D. BioMAJ: a flexible framework for databanks synchronization and processing. Bioinformatics 2008; 24:1823-5. [PMID: 18593718 PMCID: PMC3293366 DOI: 10.1093/bioinformatics/btn325] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
UNLABELLED Large- and medium-scale computational molecular biology projects require accurate bioinformatics software and numerous heterogeneous biological databanks, which are distributed around the world. BioMAJ provides a flexible, robust, fully automated environment for managing such massive amounts of data. The JAVA application enables automation of the data update cycle process and supervision of the locally mirrored data repository. We have developed workflows that handle some of the most commonly used bioinformatics databases. A set of scripts is also available for post-synchronization data treatment consisting of indexation or format conversion (for NCBI blast, SRS, EMBOSS, GCG, etc.). BioMAJ can be easily extended by personal homemade processing scripts. Source history can be kept via html reports containing statements of locally managed databanks. AVAILABILITY http://biomaj.genouest.org. BioMAJ is free open software. It is freely available under the CECILL version 2 license.
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Affiliation(s)
- Olivier Filangi
- IRISA/INRIA, Symbiose Project, Unité de Biométrie et Intelligence Artificielle, UR875, INRA, F-31320 Castanet-Tolosan, France
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Hereng T, Lambert M, Hachulla E, Samor M, Dubucquoi S, Caron C, Launay D, Morell-Dubois S, Queyrel V, Hatron PY. Influence of aspirin on the clinical outcomes of 103 anti-phospholipid antibodies-positive patients. Lupus 2008; 17:11-5. [DOI: 10.1177/0961203307084724] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [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
One hundred and three consecutive asymptomatic anti-phospholipid (aPL) antibody-positive carriers, taking aspirin ( n = 75) or not ( n = 28), were studied retrospectively to determine whether aspirin could provide primary prevention of anti-phospholipid syndrome (APS) symptoms. All patients positive for anti-cardiolipin antibodies (aCL; >25 UGPL or UMPL) and/or lupus anti-coagulant were followed for a mean of 64 ± 24.7 months. Among aPL-positive patients, 37 had systemic lupus erythematosus (SLE), 20 had prolonged activated partial thromboplastin times, 19 had other connective tissue diseases, 16 had autoimmune thrombocytopenia (AIT), 11 had diverse diseases. Nineteen patients experienced thrombotic event(s) during follow-up. Clinical features, biological parameters and hydroxychloroquine use were comparable for the two groups, but thrombotic events differed (log-rank test; P = 0.02). Four of the 10 SLE patients not taking aspirin developed thrombosis compared with 3/27 SLE patients taking aspirin (log-rank test; P = 0.03). Anti-phospholipid -positive patients with AIT developed fewer thromboses while taking aspirin (log-rank test; P = 0.01). In conclusion, aPL-positive SLE and AIT patients should take aspirin to prevent APS manifestations. Prospective therapeutic trials are needed to confirm aspirin's prophylactic role in such patients. Lupus (2008) 17, 11—15.
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Affiliation(s)
| | | | | | | | | | - C. Caron
- Hemostasis Laboratory, University Hospital of Lille, Faculty of Medicine and Lille University, 59035 Lille Cedex, France
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Duchaud E, Boussaha M, Loux V, Bernardet JF, Michel C, Kerouault B, Mondot S, Nicolas P, Bossy R, Caron C, Bessières P, Gibrat JF, Claverol S, Dumetz F, Le Hénaff M, Benmansour A. Complete genome sequence of the fish pathogen Flavobacterium psychrophilum. Nat Biotechnol 2007; 25:763-9. [PMID: 17592475 DOI: 10.1038/nbt1313] [Citation(s) in RCA: 162] [Impact Index Per Article: 9.5] [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: 09/12/2006] [Accepted: 05/29/2007] [Indexed: 11/09/2022]
Abstract
We report here the complete genome sequence of the virulent strain JIP02/86 (ATCC 49511) of Flavobacterium psychrophilum, a widely distributed pathogen of wild and cultured salmonid fish. The genome consists of a 2,861,988-base pair (bp) circular chromosome with 2,432 predicted protein-coding genes. Among these predicted proteins, stress response mediators, gliding motility proteins, adhesins and many putative secreted proteases are probably involved in colonization, invasion and destruction of the host tissues. The genome sequence provides the basis for explaining the relationships of the pathogen to the host and opens new perspectives for the development of more efficient disease control strategies. It also allows for a better understanding of the physiology and evolution of a significant representative of the family Flavobacteriaceae, whose members are associated with an interesting diversity of lifestyles and habitats.
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Affiliation(s)
- Eric Duchaud
- INRA, Unité Virologie et Immunologie Moléculaires UR892, F-78350 Jouy-en-Josas, France.
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Jeanfaivre T, Gourdier A, Hureaux J, Savary L, Le Guen Y, Blin V, Régnard O, Jousset Y, Picquet J, Mège M, Tuchais C, Caron C, Urban T. 222 Apport de l’imagerie par résonance magnétique cérébrale (IRMc) à la recherche de métastases dans le cadre du bilan d’extension des tumeurs pulmonaires opérables après une tomodensitométrie cérébrale (TDMc) normale. Rev Mal Respir 2007. [DOI: 10.1016/s0761-8425(07)72598-6] [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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Anthonioz C, Loisel D, Delorme B, Pasco-Papon A, Aube C, Caron C. Aspects IRM de l’encéphalopathie anoxo-ischémique du nouveau-né à terme et du prémature. ACTA ACUST UNITED AC 2006; 87:1651-70. [PMID: 17095960 DOI: 10.1016/s0221-0363(06)74144-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 10/22/2022]
Abstract
These past few years have seen an increasing role of MRI in the investigation of neonatal cerebral anoxic-ischemic pathology. This is due not only to greater precision in diagnosing lesion extension, but also to earlier detection of lesions with the diffusion of weighted imagery. The aim of this iconographic review is to illustrate the main MRI aspects of anoxic-ischemic encephalopathy in a pedagogical way. After a brief physiopathology reminder, the different cerebral lesions are studied in a first chapter on the premature newborn pathology and a second chapter on full-term newborn pathology.
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Affiliation(s)
- C Anthonioz
- Département de radiologie, CHU, 4 rue Larrey, 49933 Angers Cedex 09.
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36
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Lepage E, Brinster S, Caron C, Ducroix-Crepy C, Rigottier-Gois L, Dunny G, Hennequet-Antier C, Serror P. Comparative genomic hybridization analysis of Enterococcus faecalis: identification of genes absent from food strains. J Bacteriol 2006; 188:6858-68. [PMID: 16980489 PMCID: PMC1595521 DOI: 10.1128/jb.00421-06] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Enterococcus faecalis, a member of the natural microbiota of animal and human intestinal tracts, is also present as a natural contaminant in a variety of fermented foods. Over the last decade, E. faecalis has emerged as a major cause of nosocomial infections. We investigated the genetic diversity in 30 clinical and food isolates, including strains V583 and MMH594, in order to determine whether clinical and food isolates could be distinguished. Data were obtained using comparative genomic hybridization and specific PCR with a total of 202 probes of E. faecalis, selected using the available V583 genome sequence and part of the MMH594 pathogenicity island. The cognate genes encoded mainly exported proteins. Hybridization data were analyzed by a two-component mixture model that estimates the probability of any given gene to be either present or absent in the strains. A total of 78 genes were found to be variable, as they were absent in at least one isolate. Most of the variable genes were clustered in regions that, in the published V583 sequence, related to prophages or mobile genetic elements. The variable genes were distributed in three main groups: (i) genes equally distributed between clinical and dairy food isolates, (ii) genes absent from dairy food-related isolates, and (iii) genes present in MMH594 and V583 strains only. Further analysis of the distribution of the last gene group in 70 other isolates confirmed that six of the probed genes were always absent in dairy food-related isolates, whereas they were detected in clinical and/or commensal isolates. Two of them corresponded to prophages that were not detected in the cognate isolates, thus possibly extending the number of genes absent from dairy food isolates. Genes specifically detected in clinical isolates may prove valuable for the development of new risk assessment markers for food safety studies and for identification of new factors that may contribute to host colonization or infection.
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Affiliation(s)
- E Lepage
- Unité des Bactéries Lactiques et pathogènes Opportunistes, INRA, Jouy-en-Josas, France
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Rousseaux S, Faure AK, Thévenon J, Escoffier E, Lestrat C, Govin J, Hennebicq S, Sèle B, Caron C, Khochbin S. [Epigenetics of the sperm cell]. ACTA ACUST UNITED AC 2006; 34:831-5. [PMID: 16949851 DOI: 10.1016/j.gyobfe.2006.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2006] [Accepted: 07/05/2006] [Indexed: 11/23/2022]
Abstract
In addition to genetic information, the spermatozoon carries another type of information, named epigenetic, which is not associated with variations of the DNA sequence. In somatic cells, it is now generally admitted that epigenetic information is not only regulated by DNA methylation but also involves modifications of the genome structure, or epigenome. During male germ cell maturation, the epigenome is globally re-organized, since most histones, which are associated to DNA in somatic cells, are removed and replaced by sperm specific nuclear proteins, the protamines, responsible for the tight compaction of the sperm DNA. However, a small proportion of histones, and probably other proteins, are retained within the sperm nucleus, and the structure of the sperm genome is actually heterogeneous. This heterogeneity of the sperm epigenome could support an epigenetic information, transmitted to the embryo, which could be crucial for its development. Although it is nowadays possible to appreciate the global structure of the sperm genome, the precise constitution of the sperm epigenome remains unknown. In particular, very recent data suggest that specific regions of the genome could be associated with particular proteins and define specific structures. This structural partitioning of the sperm genome could convey important epigenetic information, crucial for the embryo development.
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Affiliation(s)
- S Rousseaux
- Unité Inserm-UJF U309, institut Albert-Bonniot, rond-point de la Chantourne, 38706 La Tronche cedex, France.
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Govin J, Lestrat C, Caron C, Pivot-Pajot C, Rousseaux S, Khochbin S. Histone acetylation-mediated chromatin compaction during mouse spermatogenesis. Ernst Schering Res Found Workshop 2006:155-72. [PMID: 16568954 DOI: 10.1007/3-540-37633-x_9] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
One of the most dramatic chromatin remodelling events takes place during mammalian spermatogenesis involving massive incorporation of somatic and testis-specific histone variants, as well as generalized histone modifications before their replacement by new DNA packaging proteins. Our data suggest that the induced histone acetylation occurring after meiosis may direct the first steps of genome compaction. Indeed, a double bromodomain-containing protein expressed in postmeiotic cells, Brdt, shows the extraordinary capacity to specifically condense acetylated chromatin in vivo and in vitro. In elongating spermatids, Brdt widely co-localizes with acetylated histones before accumulating in condensed chromatin domains. These domains preferentially maintain their acetylation status until late spermatogenesis. Based on these data, we propose that Brdt mediates a general histone acetylation-induced chromatin compaction and also maintains differential acetylation of specific regions, and is therefore involved in organizing the spermatozoon's genome.
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Affiliation(s)
- J Govin
- Laboratoire de Biologie Moléculaire et Cellulaire de la Différenciation, INSERM U 309, Equipe Chromatine et Expression des Gènes, Institut Albert Bonniot, Faculté de Médecine, La Tronche, France
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Assaban M, Aubé C, Lebigot J, Ridereau-Zins C, Hamy A, Caron C. Intérêt de l’IRM avec perfusion de mangafodipir trisodium dans la détection des fuites biliaires. ACTA ACUST UNITED AC 2006; 87:41-7. [PMID: 16415779 DOI: 10.1016/s0221-0363(06)73968-3] [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] [Indexed: 01/07/2023]
Abstract
PURPOSE To assess the value of contrast-enhanced magnetic resonance cholangiography with Teslascan perfusion for the detection and localization of trauma-induced and postoperative bile leaks. MATERIALS AND METHODS Between October 2002 and December 2004, 7 patients with suspected bile duct leaks after trauma (n = 2) or surgery (n = 5) requiring morphological evaluation were included. MRI examination included single shot fast spin- echo T2 weighted and gradient echo T1 weighted images prior to and 112 minutes in average after IV administration of mangafodipir trisodium. The results of contrast enhanced MR cholangiography were correlated to surgery (n = 3), clinical course (n = 3) and percutaneous drainage (n = 1). RESULTS Mangafodipir trisodium-enhanced imaging showed extravasated Teslascan in collections in 6 patients (86%) whereas the combination of T2 weighted images and mangafodipir trisodium enhanced images revealed biliary collections in 7 patients (100%). The fistula between bile duct and collection was visualized in 4 patients (57%) before mangafodipir trisodium perfusion and in 3 patients (43%) after injection. In one patient the fistula was visible only after injection. Combination of both pre- and post injection MR correctly depicted the origin of bile leak in 5 cases (71%). CONCLUSION Mangafodipir trisodium-enhanced magnetic resonance cholangiography is a non invasive technique that can successfully detect the presence of bile duct leaks. The combination of T2 weighted MR cholangiography and mangafodipir trisodium-enhanced T1 weighted MR cholangiography increases the sensitivity in detection and localization of the site of bile leak.
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Affiliation(s)
- M Assaban
- Département de Radiologie, CHU Angers
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40
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Abstract
We have compared the proteomic profiles of L. lactis subsp. cremoris NCDO763 growing in the synthetic medium M17Lac, skim milk microfiltrate (SMM), and skim milk. SMM was used as a simple model medium to reproduce the initial phase of growth of L. lactis in milk. To widen the analysis of the cytoplasmic proteome, we used two different gel systems (pH ranges of 4 to 7 and 4.5 to 5.5), and the proteins associated with the cell envelopes were also studied by two-dimensional electrophoresis. In the course of the study, we analyzed about 800 spots and identified 330 proteins by mass spectrometry. We observed that the levels of more than 50 and 30 proteins were significantly increased upon growth in SMM and milk, respectively. The large redeployment of protein synthesis was essentially associated with an activation of pathways involved in the metabolism of nitrogenous compounds: peptidolytic and peptide transport systems, amino acid biosynthesis and interconversion, and de novo biosynthesis of purines. We also showed that enzymes involved in reactions feeding the purine biosynthetic pathway in one-carbon units and amino acids have an increased level in SMM and milk. The analysis of the proteomic data suggested that the glutamine synthetase (GS) would play a pivotal role in the adaptation to SMM and milk. The analysis of glnA expression during growth in milk and the construction of a glnA-defective mutant confirmed that GS is an essential enzyme for the development of L. lactis in dairy media. This analysis thus provides a proteomic signature of L. lactis, a model lactic acid bacterium, growing in its technological environment.
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Affiliation(s)
- Christophe Gitton
- Unité Biochimie et Structure des Protéines, INRA, Jouy-en-Josas, France
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Wang J, Caron C, He X, Carpentier A, Mistou MY, Trubuil A, Gitton C, Henry C, Guillot A. A system for integrative and post-planned analysis of 2-DE/MS centered proteomics data. J Integr Bioinform 2005. [DOI: 10.1515/jib-2005-12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Summary Proteomic analysis is intrinsically an iterative, incremental process. Information is usually acquired gradually by researchers, and in different projects. At the same time, there are relatively few examples of biological data management systems which take into account this reality, most of them usually treat the experiment generated data as static and unchangeable: data are never reconsidered, or seldom, whereas technology becomes more powerful or that other researchers have brought information on data correction. And yet, post-planned analysis [21] which involves multiple iterations and subsequent re-investigations of previously prepared data might bring tremendous benefits.Named PARIS (Proteomic Analysis and Resources Indexation System), the system we developed here seeks to address this requirement. Compliant with the majority of 2-DE analysis and MALDI-TOF based protein identification softwares, it automatically takes data from them and stores the raw and processed data in a relational database suitable for advanced exploration. Taking into account the standards proposed by PSI (Proteomics Standard Initiative), the system exports the stored data in XML format for data exchange and knowledge sharing. PARIS also manages information about experiments and their biological contexts, and allows the user to search and analyze a large data collection in a global manner. It provides tools for data integration and advanced, cross multi-experiment, multi-experimenter data exploration, and supports visual verification and correction of the analysis results. Implemented in Java, the system is platform independent, accessible to multiple users through Internet. It is also scalable for use for one or many laboratories, and therefore suitable to inter-institute collaborative work.PARIS can be tested and downloaded at http://genome.jouy.inra.fr/paris
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Affiliation(s)
- Juhui Wang
- 1INRA, Lab. of Applied Mathematics and Informatics, 78352 Jouy-en-Josas, France
| | - Christophe Caron
- 2INRA, Lab. of Mathematics, Informatics and Genomics, 78352 Jouy-en-Josas, France
| | - Xuefeng He
- 1INRA, Lab. of Applied Mathematics and Informatics, 78352 Jouy-en-Josas, France
| | - Audrey Carpentier
- 1INRA, Lab. of Applied Mathematics and Informatics, 78352 Jouy-en-Josas, France
| | - Michel-Yves Mistou
- 3INRA, Lab. of Protein Biochemistry and Proteomics Core Facility, 78352 Jouy-en-Josas, France
| | - Alain Trubuil
- 1INRA, Lab. of Applied Mathematics and Informatics, 78352 Jouy-en-Josas, France
| | - Christophe Gitton
- 3INRA, Lab. of Protein Biochemistry and Proteomics Core Facility, 78352 Jouy-en-Josas, France
| | - Céline Henry
- 3INRA, Lab. of Protein Biochemistry and Proteomics Core Facility, 78352 Jouy-en-Josas, France
| | - Alain Guillot
- 3INRA, Lab. of Protein Biochemistry and Proteomics Core Facility, 78352 Jouy-en-Josas, France
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Goudemand J, Scharrer I, Berntorp E, Lee CA, Borel-Derlon A, Stieltjes N, Caron C, Scherrmann JM, Bridey F, Tellier Z, Federici AB, Mannucci PM. Pharmacokinetic studies on Wilfactin, a von Willebrand factor concentrate with a low factor VIII content treated with three virus-inactivation/removal methods. J Thromb Haemost 2005; 3:2219-27. [PMID: 16194199 DOI: 10.1111/j.1538-7836.2005.01435.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [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: 11/29/2022]
Abstract
OBJECTIVE In order to correct the primary von Willebrand factor (VWF) defect and avoid supra-physiologic plasma levels of factor VIII, a pure VWF concentrate almost devoid of FVIII was developed and used in France since 1989. METHODS The pharmacokinetic (PK) profile of the most recent version of this concentrate (Wilfactin; LFB, Les Ulis, France), treated with three virus-inactivation/removal methods (solvent/detergent, 35 nm filtration, dry heat treatment), was investigated in 25 patients. Seventeen patients with various types of clinically severe von Willebrand disease (VWD) were included in a crossover, randomized trial carried out in five European centers and comparing Wilfactin with concentrates containing both FVIII and VWF (FVIII/VWF). Eight type 3 VWD patients were included in another trial carried out in six French centers comparing Wilfactin with its previous version (Facteur Willebrand-LFB; LFB) that adopted one virus-inactivation method only. RESULTS For both the measurements evaluated in this study (VWF antigen, VWF:Ag; and VWF ristocetin co-factor activity, VWF:RCo), Wilfactin had a PK profile similar to that of the FVIII/VWF concentrates and of Facteur Willebrand-LFB. VWF:RCo and VWF:Ag recoveries were 2.1 +/- 0.3 and 1.8 +/- 0.3 per IU kg(-1), respectively, and the half-lives were 12.4 +/- 1.8 and 15.9 +/- 1.5 h. The FVIII synthesis rate was 5.8 +/- 1.0 IU dL(-1) h(-1), with a half-life of 15.8 +/- 2.4 h. CONCLUSION The PK of VWF and FVIII have not been altered by the three virus-inactivation/removal steps during the manufacturing of Wilfactin.
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Affiliation(s)
- J Goudemand
- Haematology Institute, University Hospital, Lille, France.
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Ouksel H, Bénéteau S, Bizieux-Thaminy A, Valo I, Caron C, Urban T, Racineux JL. Diagnostic radiologique des séquestrations pulmonaires. Rev Mal Respir 2005; 22:492. [PMID: 16227939 DOI: 10.1016/s0761-8425(05)85581-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- H Ouksel
- Département de pneumologie, CHU Angers, Angers, France
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Pasco-Papon A, Darabi D, Mas-Caradec MC, Tanguy JY, Marc G, Ter Minassian A, Beydon L, Caron C, Lejeune JJ. [Conventional and diffusion magnetic resonance imaging in the acute phase of severe traumatic brain injury]. ACTA ACUST UNITED AC 2005; 24:510-5. [PMID: 15885972 DOI: 10.1016/j.annfar.2005.03.009] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Neuro-imaging is essential for the initial evaluation and subsequent control in the acute stage of severe head injury. In these indications tomodensitometry (TDM) has a pivotal role. Despite the well recognized contribution of magnetic resonance imaging (MRI) to the investigation of most of acute neurological pathologies, MRI is not still a routine procedure for the initial investigation of patients with acute head injury. The superiority of morphological and functional MRI on TDM in this indication is discussed.
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Affiliation(s)
- A Pasco-Papon
- Département de radiologie, hôpital Larrey, CHU d'Angers, 49033 Angers, France.
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Rousseaux S, Faure AK, Caron C, Lestrat C, Govin J, Hennebicq S, Sèle B, Khochbin S. [Organizing the sperm nucleus]. Gynecol Obstet Fertil 2005; 32:785-91. [PMID: 15380763 DOI: 10.1016/j.gyobfe.2004.07.003] [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] [Subscribe] [Scholar Register] [Received: 06/15/2004] [Accepted: 07/05/2004] [Indexed: 10/01/2022]
Abstract
Thanks to the success of new assisted reproductive technology, including sperm microinjection (i.c.s.i.), men with severe spermatogenesis impairments can now become biological fathers. Whether the germinal cell used for i.c.s.i. is conveying appropriate genetic and epigenetic information is an important concern. However, to date, there is a huge lack of data on which information is epigenetically conveyed to the offspring and how. The basic support for epigenetic marks is the nucleus structure. During spermatogenesis, a major re-organization of the male germ cells nucleus structure occurs, which includes a global condensation associated with a removal of most core somatic histones and their replacement by sperm-specific nuclear proteins. The available data on the molecular mechanisms involved in this process and how it could relate to the setting of male-specific epigenetic information is reviewed and discussed in light of our current knowledge about nuclear structure and functions.
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Affiliation(s)
- S Rousseaux
- Unité INSERM U309, institut Albert-Bonniot, faculté de médecine de Grenoble, 38706 La Tronche, France.
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Affiliation(s)
- H Ouksel
- Département de pneumologie, CHU Angers, 4 rue Larrey, 49000 Angers Cedex 01, France.
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Aubé C, Racineux PX, Lebigot J, Oberti F, Croquet V, Argaud C, Calès P, Caron C. [Diagnosis and quantification of hepatic fibrosis with diffusion weighted MR imaging: preliminary results]. ACTA ACUST UNITED AC 2004; 85:301-6. [PMID: 15192522 DOI: 10.1016/s0221-0363(04)97582-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [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: 12/24/2022]
Abstract
PURPOSE Diagnosis and quantification of hepatic fibrosis are especially important in patients with chronic liver disease. Liver biopsy remains the gold standard for diagnosis of cirrhosis but has several limitations. The purpose of this study was to determine the usefulness of diffusion-weighted MR imaging, for the diagnosis of cirrhosis and quantification of hepatic fibrosis, and to define the best sequence parameters for this evaluation. METHODS AND MATERIALS Diffusion-weighted imaging using a 1.5 T MR unit was performed in 14 healthy volunteers and 13 cirrhotic patients. Sets of 8 images with different b values (200, 400, 600, and 800 sec/mm2) and different TR (3500 and 5000 ms) were acquired with breath-holding. Apparent diffusion coefficients (ADCs) were calculated. Correlation between Child-Pugh scores, serum hyaluronate concentrations and ADCs were performed. RESULTS ADCs were significantly lower in cirrhotic patients (2,055 10-3) compared to controls (2,915 10-3) (p<0.05) when the b value was 200 s/mm2 and the TR was 5000 ms. Significant correlations were observed between Child-Pugh scores and ADCs (p<0.05), and between serum hyaluronate concentrations and ADCs (p<0.05), when the b value was 400 sec/mm2 and the TR was 5000 ms. CONCLUSION Our preliminary study showed that the measurement of ADCs has good potential for diagnosis and quantification of hepatic fibrosis, especially when using b values of 200 sec/mm2 and 400 sec/mm2.
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Affiliation(s)
- C Aubé
- Département de radiologie, CHU Angers.
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Aubé C, Haghbin H, Lebigot J, Pessaux P, Ridereau-Zins C, Arnaud JP, Caron C. Value of the transgluteal approach under CT-guidance for percutaneous interventional image guided procedures (in French). Clin Imaging 2004. [DOI: 10.1016/j.clinimag.2004.06.018] [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: 10/26/2022]
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Abstract
BACKGROUND AND OBJECTIVES Von Willebrand Factor (VWF) is a complex high-molecular-weight (HMW) plasma glycoprotein playing a critical role in primary and secondary haemostasis. Owing to its multimeric structure and sensitivity to proteolysis, VWF can be used as a marker of the impact of collection procedures on the characteristics of plasma for transfusion and for fractionation. We studied VWF content, functional activity and HMW multimers in plasmas collected by five different automated apheresis collection procedures. MATERIALS AND METHODS Five series of 30 plasma units were obtained from volunteer donors at two collection sites using Haemonetics PCS2 machines with Revision (Rev) F, Rev G, high-separation core (HSC), or filter core (FC) procedures, or Baxter-Fenwall Autopheresis-C (Auto-C). VWF antigen (VWF:Ag), ristocetin cofactor (VWF:RCo) activity and HMW multimers were first determined in 10 randomly selected plasma donations collected with Rev G, HSC, FC and Auto-C procedures. Then, the same analyses and the collagen binding (VWF:CB) activity were determined in the pools of 30 donations from each of the five procedures and compared with two normal plasma pools (NPP1 and NPP2). A reference plasma (RP) was used to calibrate each assay. RESULTS There were a greater number of group O individuals in the Rev F, Rev G and FC donors than in the HSC and Auto-C donors. The mean VWF:Ag level was > 100 IU/dl, VWF:RCo activity was > 90 U/dl, the VWF:RCo/Ag ratio was close to 1, and the percentage of 11-15 mers was above 100% of RP in the 10 individual plasma units from Rev G, HSC, FC, and Auto-C and in their respective pools. The mean percentage of multimers > 15 mers, relative to RP, was significantly less in Rev G plasmas (48 +/- 17%; range 32-91%), compared with Auto-C, HSC and FC plasmas (P = 0.0211; 0.0257; and 0.0376, respectively). The VWF:CB activity of the 30-donation pools was 61 and 60 U/dl in Auto C and HSC, 50 U/dl in Rev F and FC, and 43 U/dl in the Rev G pool. The VWF:CB/Ag ratio was 0.54 (Auto-C), 0.49 (HSC), 0.46 (Rev F), 0.45 (FC) and 0.37 (Rev G), compared with 0.81and 0.92 in NPPs. The percentage of VWF multimers of 11-15 mers in apheresis plasma and NPP was normal. VWF multimers > 15 mers ranged from 38 to 64% of that of RP plasma, and was 111 and 112% in NPPs. CONCLUSIONS The VWF:Ag, VWF:RCo activity and 11-15 mer VWF multimers were well preserved in all plasma units from each of the five apheresis procedures. The VWF:CB activity and the percentage of multimers > 15 mers in apheresis plasma was less than in normal plasma pools and differed slightly among procedures.
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Affiliation(s)
- T Burnouf
- Human Plasma Product Services, Lille, France.
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Aubé C, Haghbin H, Lebigot J, Pessaux P, Ridereau-Zins C, Arnaud JP, Caron C. Intérêt de la voie d’abord transglutéale sous contrôle tomodensitométrique dans les procédures radiologiques interventionnelles percutanées. ACTA ACUST UNITED AC 2004; 85:117-23. [PMID: 15094625 DOI: 10.1016/s0221-0363(04)97557-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PURPOSE To assess the CT-guided transgluteal approach for percutaneous interventional image guided procedures. MATERIALS AND METHODS CT guided transgluteal approach through the greater sciatic foramen was used for diagnostic procedure (CT guided needle biopsy of presacral masses n=5) or percutaneous treatment (aspiration n=4, and drainage n=10) in 19 patients, mean age 58 years (age range 20-86). RESULTS No technical failure occurred. A histological diagnostic was obtained in all diagnostic procedures. The success rate for therapeutic procedures was 87% and allowed to postpone surgery in 2 cases. In 2 patients a small pelvic hematoma occurred after catheter placement, but remained without consequence. Recurrences of collection occurred in 2 cases, one treated medically and the other surgically. Two patients suffered from transient deep pelvic pain, which resolved after catheter removal. CONCLUSION CT-guided percutaneous transgluteal procedures may be successfully performed in patients who cannot undergo trans-perineal, trans-rectal or trans-vaginal approach and is a safe and effective diagnostic and therapeutic option.
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Affiliation(s)
- C Aubé
- Département de radiologie, CHU Angers.
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