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Roquilly A, Vigué B, Boutonnet M, Bouzat P, Buffenoir K, Cesareo E, Chauvin A, Court C, Cook F, de Crouy AC, Denys P, Duranteau J, Fuentes S, Gauss T, Geeraerts T, Laplace C, Martinez V, Payen JF, Perrouin-Verbe B, Rodrigues A, Tazarourte K, Prunet B, Tropiano P, Vermeersch V, Velly L, Quintard H. French recommendations for the management of patients with spinal cord injury or at risk of spinal cord injury. Anaesth Crit Care Pain Med 2020; 39:279-289. [PMID: 32229270 DOI: 10.1016/j.accpm.2020.02.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [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] [Indexed: 12/16/2022]
Abstract
OBJECTIVES To update the French guidelines on the management of trauma patients with spinal cord injury or suspected spinal cord injury. DESIGN A consensus committee of 27 experts was formed. A formal conflict-of-interest (COI) policy was developed at the outset of the process and enforced throughout. The entire guidelines process was conducted independently of any industrial funding (i.e. pharmaceutical, medical devices). The authors were advised to follow the rules of the Grading of Recommendations Assessment, Development and Evaluation (GRADE®) system to guide assessment of quality of evidence. The potential drawbacks of making strong recommendations in the presence of low-quality evidence were emphasised. METHODS The committee studied twelve questions: (1) What are the indications and arrangements for spinal immobilisation? (2) What are the arrangements for pre-hospital orotracheal intubation? (3) What are the objectives of haemodynamic resuscitation during the lesion assessment, and during the first few days in hospital? (4) What is the best way to manage these patients to improve their long-term prognosis? (5) What is the place of corticosteroid therapy in the initial phase? (6) What are the indications for magnetic resonance imaging in the lesion assessment phase? (7) What is the optimal time for surgical management? (8) What are the best arrangements for orotracheal intubation in the hospital environment? (9) What are the specific conditions for weaning these patients from mechanical ventilation for? (10) What are the procedures for analgesic treatment of these patients? (11) What are the specific arrangements for installing and mobilising these patients? (12) What is the place of early intermittent bladder sampling in these patients? Each question was formulated in a PICO (Patients, Intervention, Comparison, Outcome) format and the evidence profiles were produced. The literature review and recommendations were made according to the GRADE® Methodology. RESULTS The experts' work synthesis and the application of the GRADE method resulted in 19 recommendations. Among the recommendations formalised, 2 have a high level of evidence (GRADE 1+/-) and 12 have a low level of evidence (GRADE 2+/-). For 5 recommendations, the GRADE method could not be applied, resulting in expert advice. After two rounds of scoring and one amendment, strong agreement was reached on all the recommendations. CONCLUSIONS There was significant agreement among experts on strong recommendations to improve practices for the management of patients with spinal cord injury.
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Affiliation(s)
- A Roquilly
- Anaesthesiology and Intensive Care Unit, Hôtel-Dieu, Nantes University Hospital, Nantes, France.
| | - B Vigué
- Anaesthesiology and Intensive Care Unit, Bicêtre University Hospital, AP-HP, Le Kremlin-Bicêtre, France
| | - M Boutonnet
- Hôpital d'instruction des armées Percy, Clamart, France
| | - P Bouzat
- Grenoble Alps Trauma Centre, Department of Anaesthesia and Critical Care, Grenoble University Hospital, Grenoble, France
| | - K Buffenoir
- Neurosurgery department, Nantes University Hospital, Nantes, France
| | - E Cesareo
- Edouard-Herriot University Hospital, Lyon, France
| | - A Chauvin
- Anaesthesiology and Intensive Care Unit, Lariboisière Hospital, AP-HP, Paris, France
| | - C Court
- Orthopaedic Surgery Department, Spine and Bone Tumor Unit, Bicêtre University Hospital, Le Kremlin-Bicêtre, France
| | - F Cook
- Unité de réanimation chirurgicale polyvalente et de polytraumatologie, Albert-Chenevier-Henri-Mondor University Hospital, Créteil, France
| | - A C de Crouy
- Unité SRPR/Réanimation chirurgicale, Bicêtre University Hospital, Le Kremlin-Bicêtre, France
| | - P Denys
- Orthopaedic department, Spine and Bone Tumor Unit. Bicêtre University Hospital, Le Kremlin Bicêtre, France
| | - J Duranteau
- Anaesthesiology and Intensive Care Unit, Bicêtre University Hospital, AP-HP, Le Kremlin-Bicêtre, France
| | - S Fuentes
- Aix-Marseille University, AP-HM, Department of Neurosurgery, University Hospital Timone, Marseille, France
| | - T Gauss
- Post-Intensive Care Rehabilitation Unit, Bicêtre University Hospital, Le Kremlin Bicêtre, France
| | - T Geeraerts
- Anaesthesiology and Critical Care Department, Toulouse University Hospital, University of Toulouse 3-Paul Sabatier, Toulouse, France
| | - C Laplace
- Anaesthesiology and Intensive Care Unit, Bicêtre University Hospital, AP-HP, Le Kremlin-Bicêtre, France
| | - V Martinez
- Neuro Urology Unit, Department of Physical Medicine and Rehabilitation. Raymond Poincaré University Hospital, Garches, France
| | - J F Payen
- Department of Anaesthesia and Critical Care, Grenoble Alps University Hospital, 38000 Grenoble, France
| | - B Perrouin-Verbe
- Department of Neurological Physical Medicine and Rehabilitation, Nantes University Hospital, Nantes, France
| | - A Rodrigues
- Anaesthesiology and Intensive Care Unit, Bicêtre University Hospital, AP-HP, Le Kremlin-Bicêtre, France
| | - K Tazarourte
- Emergency department, Edouard-Herriot University Hospital, 69003 Lyon, France
| | - B Prunet
- Department of Anaesthesia and Critical Care, Val-de-Grâce Hospital, Paris, France
| | - P Tropiano
- Aix-Marseille University, AP-HM, Orthopaedic and traumatic surgery, University Hospital Timone, Marseille, France
| | - V Vermeersch
- Anaesthesiology and Intensive Care Unit, Brest University Hospital, Brest, France
| | - L Velly
- Aix Marseille University, AP-HM, Department of Anaesthesiology and Critical Care Medicine, University Hospital Timone, Marseille, France
| | - H Quintard
- Intensive Care Unit, Nice University Hospital, Pasteur 2 Hospital, Nice, France
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Laplace C, Harrois A, Hamada S, Duranteau J. Traumatismes thoraciques non chirurgicaux. Méd Intensive Réa 2018. [DOI: 10.3166/rea-2018-0006] [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: 11/20/2022]
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Garabedian C, Sfeir R, Langlois C, Bonnard A, Khen-Dunlop N, Gelas T, Michaud L, Auber F, Piolat C, Lemelle JL, Fouquet V, Habonima É, Becmeur F, Polimerol ML, Breton A, Petit T, Podevin G, Lavrand F, Allal H, Lopez M, Elbaz F, Merrot T, Michel JL, Buisson P, Sapin E, Delagausie P, Pelatan C, Gaudin J, Weil D, de Vries P, Jaby O, Lardy H, Aubert D, Borderon C, Fourcade L, Geiss S, Breaud J, Pouzac M, Echaieb A, Laplace C, Gottrand F, Houfflin-Debarge V. Le diagnostic anténatal modifie-t-il la prise en charge néonatale et le devenir à 1 an des enfants suivis pour atrésie de l’œsophage de type III ? ACTA ACUST UNITED AC 2015; 44:848-54. [DOI: 10.1016/j.jgyn.2014.12.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 11/09/2014] [Accepted: 12/01/2014] [Indexed: 11/30/2022]
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Abstract
The initial management of trauma patient is a critical period aiming at: stabilizing the vital functions; following a rigorous injury assessment; defining a therapeutic strategy. This management has to be organized to minimize loss of time that would be deleterious for the patients outcome. Thus, before patient arrival, the trauma team alert should lead to the initiation of care procedures adapted to the announced severity of the patient. Moreover, each individual should know its role in advance and the team should be managed by only one individual (the trauma leader) to avoid conflicts of decision. A rapid trauma injury assessment aims not only at guiding resuscitation (chest drainage, pelvic contention, to define the mean arterial pressure goal) but also to decide a critical intervention in case of hemodynamic instability (laparotomy, thoracotomy, arterial embolisation). This initial assessment includes a chest and a pelvic X-ray, abdominal ultrasound (extended to the lung) and transcranial Doppler (TCD). The whole body scanner with administration of intravenous contrast material is the cornerstone of the injury assessment but can be done for patients stabilized after the initial resuscitation.
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Affiliation(s)
- A Harrois
- Département d'anesthésie-réanimation chirurgicale, université Paris-Sud, hôpital de Bicêtre, hôpitaux universitaires Paris-Sud, Assistance publique-Hôpitaux de Paris, CHU de Bicêtre, 78, rue du Général-Leclerc, 94275 Le Kremlin-Bicêtre, France.
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Neildez-Nguyen TMA, Parisot A, Vignal C, Rameau P, Stockholm D, Picot J, Allo V, Le Bec C, Laplace C, Paldi A. Epigenetic gene expression noise and phenotypic diversification of clonal cell populations. Differentiation 2007; 76:33-40. [PMID: 17825084 DOI: 10.1111/j.1432-0436.2007.00219.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Spontaneous emergence of phenotypic heterogeneity in cultures of genetically identical cells is a frequently observed phenomenon that provides a simple in vitro experimental system to model the problems of in vivo differentiation. In the present study, we have investigated whether stochastic variation of gene expression levels could contribute to phenotypic change in human cells. We have applied the two fluorescence-coding gene method and the expression variability of the two reporter genes to human cells in culture. We have quantified the portion of gene expression variation determined by global, promoter-specific, or by epigenetic sources. These two types of variation appear to contribute, in different ways, to the phenotypic diversification of clonal cell populations. Global, or promoter-specific, gene expression noise increases with cellular stress and contributes to the emergence of cellular diversity by diversifying the gene-expression levels. Epigenetic mechanisms act to increase the robustness of the cellular state by stabilizing gene transcription levels or by reinforcing the silenced state.
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Affiliation(s)
- Thi My Anh Neildez-Nguyen
- GENETHON, Centre National de la Recherche Scientifique UMR 8115 1 bis, rue de l'Internationale, 91002 Evry, France
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Abstract
In the last two decades, laparoscopy surgery has been progressively adopted to children. Cardiorespiratory changes induced have been understood and controlled. Abdominal and urological surgery have widely benefited from this technique. Immediate postoperative period is simpler. The risk of small bowel obstruction by bands and adhesions is limited. Nevertheless, laparoscopy is not indicated for all pathologies. In neonatal surgery, more studies are necessary. Maybe the future is robotic surgery.
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Affiliation(s)
- P Buisson
- Service de chirurgie pédiatrique, hôpital de la mère et de l'enfant, quai Moncousu, 44093 Nantes cedex 01, France
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Laplace C, Martin L, Rangheard AS, Menu Y, Duranteau J. Un cas de lésion artérielle pelvienne post-traumatique masquée à l'angiographie par l'emploi d'un pantalon antichoc. ACTA ACUST UNITED AC 2004; 23:998-1002. [PMID: 15501629 DOI: 10.1016/j.annfar.2004.07.010] [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] [Received: 01/27/2004] [Accepted: 07/19/2004] [Indexed: 11/25/2022]
Abstract
Initial reports of pneumatic anti-shock garment (PASG) in severely hypotensive patients appeared promising. Nevertheless, large-scale studies in prehospital settings have shown no overall reduction in mortality rates among hypotensive patients with application of the PASG. However, in a subsample of patients with blood pressure < or =50 mmHg, PASG seems to be useful to reduce bleeding and improve survival. To our knowledge, our case report is the first which directly showns on angiography the hemostatic effect of PASG on pelvic trauma bleeding. In spite of its possible complications, PASG remains one of the tools of trained trauma teams who regularly treated severe haemorrhagic shock.
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Affiliation(s)
- C Laplace
- Département d'anesthésie-réanimation chirurgicale, CHU de Bicêtre, assistance publique-hôpitaux de Paris, 78, rue du Général-Leclerc, 94275 Le Kremlin-Bicêtre, France.
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Abstract
We report the case of an 11 months old boy who felt from 3 m high. He had an isolated brain injury with contusion and bleeding in the right frontal lobe. A large ascite was discovered in the Intensive Care Unit 6 days after the trauma. The CT scan did not reveal any abdominal lesion. This peritoneal fluid was transudative ascitic fluid which appeared to be mediated by beta-sympathetic hyperactivity of central origin. Sequential echography showed progressive improvement and disappearance of the ascite on 19th day post trauma.
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Affiliation(s)
- C Laplace
- Service de chirurgie infantile, Hôtel-Dieu, avenue Vercingétorix, BP 69, 63003 Clermont-Ferrand 1, France.
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Abstract
BACKGROUND Clinical history is insufficient to detect disorders of haemostasis in infants aged less than 1 year and laboratory coagulation testing is recommended in infants before perimedullar anaesthesia. METHODS We designed a retrospective study to assess the preoperative coagulation tests [activated partial thromboplastin time (aPTT), prothrombin time, platelet count] performed in 141 former preterm infants who underwent spinal anaesthesia for elective inguinal hernia repair. All the infants had recovered from any significant medical event (necrotizing enterocolitis, intracranial haemorrhages, transfusions of blood products, sepsis, etc.) when they were scheduled for surgery. RESULTS Mean values for aPTT were frequently abnormal (60.4%) in infants with a postconceptional age of less than 45 weeks. No complication related to the puncture or abnormal perioperative bleeding was detected. CONCLUSIONS Other coagulation tests should be evaluated to assess the coagulation status in infants with a postconceptional age of less than 45 weeks.
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Affiliation(s)
- L De Saint Blanquat
- Départment d'Anesthésie-Réanimation, Hôpital Saint Vincent de Paul, Assistance Publique-Hôpitaux de Paris, Paris, France
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Morris W, Simon L, Pineiro A, Pelle-Lancien E, Laplace C, Hamza J. [Evaluation of antibacterial filters for peridural obstetrical anesthesia]. Ann Fr Anesth Reanim 2001; 20:600-3. [PMID: 11530747 DOI: 10.1016/s0750-7658(01)00447-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To assess the antibacterial efficiency of filters used in obstetrics when epidural top-ups are performed. STUDY DESIGN Observational prospective study. PATIENTS AND METHODS We aseptically collected 201 antibacterial filters that had been used for top-ups with ropivacaine +/- sufentanil for epidural analgesia during labour. We flushed them first with 2 mL of saline and then with 2 mL of a solution containing 1.5 x 10(6) Staphylococcus epidermidis/mL. The filtrates were incubated at 37 degrees C for 72 h. Number of top-ups and duration of epidural analgesia are expressed as median (extremes). RESULTS 3 (1-10) top-ups were performed for labour analgesia over a period of 6.5 h (1.8-18). After filtering, all the solutions were found to be sterile. Especially, when using Staphylococcus epidermidis solutions, bacteria were not found beyond any filter. These results suggest the integrity of the filter membrane after several boluses. No infection related to epidural analgesia was reported. CONCLUSION Antibacterial filters provide a good protection against a potentially contaminated procedure during epidural top-ups.
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Affiliation(s)
- W Morris
- Service d'anesthésie-réanimation, assistance publique-hôpitaux de Paris, hôpital Saint-Vincent-de-Paul, 74-82 avenue Denfert-Rochereau, 75014 Paris, France
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Toes R, Nussbaum A, Degermann S, Schirle M, Emmerich N, Kraft M, Laplace C, Zwinderman A, Dick T, Müller J, Schönfisch B, Schmid C, Fehling HJ, Stevanovic S, Rammensee H, Schild H. Discrete cleavage motifs of constitutive and immunoproteasomes revealed by quantitative analysis of cleavage products. J Exp Med 2001; 194:1-12. [PMID: 11435468 PMCID: PMC2193442 DOI: 10.1084/jem.194.1.1] [Citation(s) in RCA: 268] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Proteasomes are the main proteases responsible for cytosolic protein degradation and the production of major histocompatibility complex class I ligands. Incorporation of the interferon gamma--inducible subunits low molecular weight protein (LMP)-2, LMP-7, and multicatalytic endopeptidase complex--like (MECL)-1 leads to the formation of immunoproteasomes which have been associated with more efficient class I antigen processing. Although differences in cleavage specificities of constitutive and immunoproteasomes have been observed frequently, cleavage motifs have not been described previously. We now report that cells expressing immunoproteasomes display a different peptide repertoire changing the overall cytotoxic T cell--specificity as indicated by the observation that LMP-7(-/-) mice react against cells of LMP-7 wild-type mice. Moreover, using the 436 amino acid protein enolase-1 as an unmodified model substrate in combination with a quantitative approach, we analyzed a large collection of peptides generated by either set of proteasomes. Inspection of the amino acids flanking proteasomal cleavage sites allowed the description of two different cleavage motifs. These motifs finally explain recent findings describing differential processing of epitopes by constitutive and immunoproteasomes and are important to the understanding of peripheral T cell tolerization/activation as well as for effective vaccine development.
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Affiliation(s)
- R.E.M. Toes
- Department of Immunohematology and Blood Transfusion, Department of Rheumatology, Leiden University Medical Center, 2333 ZA Leiden, Netherlands
| | - A.K. Nussbaum
- Institute for Cell Biology, Department of Immunology
| | - S. Degermann
- Basel Institute for Immunology, CH-4005 Basel, Switzerland
| | - M. Schirle
- Institute for Cell Biology, Department of Immunology
| | | | - M. Kraft
- Institute for Cell Biology, Department of Immunology
| | - C. Laplace
- Basel Institute for Immunology, CH-4005 Basel, Switzerland
| | - A. Zwinderman
- Department of Immunohematology and Blood Transfusion, Department of Rheumatology, Leiden University Medical Center, 2333 ZA Leiden, Netherlands
| | - T.P. Dick
- Section of Immunobiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520
| | - J. Müller
- Biomathematik, University of Tübingen, D-72076 Tübingen, Germany
| | - B. Schönfisch
- Biomathematik, University of Tübingen, D-72076 Tübingen, Germany
| | - C. Schmid
- Institute for Cell Biology, Department of Immunology
| | - H.-J. Fehling
- Department of Immunology, Medical Faculty/University Clinics Ulm, D-89070 Ulm, Germany
| | - S. Stevanovic
- Institute for Cell Biology, Department of Immunology
| | | | - H. Schild
- Institute for Cell Biology, Department of Immunology
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Anusaksathien O, Laplace C, Li X, Ren Y, Peng L, Goldring SR, Galson DL. Tissue-specific and ubiquitous promoters direct the expression of alternatively spliced transcripts from the calcitonin receptor gene. J Biol Chem 2001; 276:22663-74. [PMID: 11309373 DOI: 10.1074/jbc.m007104200] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The gene encoding the murine calcitonin receptor (mCTR) was isolated, and the exon/intron structure was determined. Analysis of transcripts revealed novel cDNA sequences, new alternative exon splicing in the 5'-untranslated region, and three putative promoters (P1, P2, and P3). The longest transcription unit is greater than 67 kilobase pairs, and the location of introns within the coding region of the mCTR gene (exons E3-E14) are identical to those of the porcine and human CTR genes. We have identified novel cDNA sequences that form three new exons as well as others that add 512 base pairs to the 5' side of the previously published cDNA, thereby extending exon E1 to 682 base pairs. Two of these novel exons are upstream of exon E2 and form a tripartite exon E2 (E2a, E2b, and E2c) in which E2a is utilized by promoter P2 with variable splicing of E2b. The third new exon (E3b') lies between E3a and E3b and is utilized by promoter P3. Analysis of mCTR mRNAs has revealed that the three alternative promoters give rise to at least seven mCTR isoforms in the 5' region of the gene and generate 5'-untranslated regions of very different lengths. Analysis by reverse transcription-polymerase chain reaction shows that promoters P1 and P2 are utilized in osteoclasts, brain, and kidney, whereas promoter P3 appears to be osteoclast-specific. Using transiently transfected reporter constructs, promoter P2 has activity in both a murine kidney cell line (MDCT209) and a chicken osteoclast-like cell line (HD-11EM), whereas promoter P3 is active only in the osteoclast-like cell line. These transfection data confirm the osteoclast specificity of promoter P3 and provide the first evidence that the CTR gene is regulated in a tissue-specific manner by alternative promoter utilization.
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Affiliation(s)
- O Anusaksathien
- New England Baptist Bone and Joint Institute, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, USA
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Corda S, Laplace C, Vicaut E, Duranteau J. Rapid reactive oxygen species production by mitochondria in endothelial cells exposed to tumor necrosis factor-alpha is mediated by ceramide. Am J Respir Cell Mol Biol 2001; 24:762-8. [PMID: 11415943 DOI: 10.1165/ajrcmb.24.6.4228] [Citation(s) in RCA: 268] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Tumor necrosis factor (TNF)-alpha increases mitochondrial reactive oxygen species (ROS) production in tumor cells and hepatocytes. However, whether TNF-alpha stimulates mitochondrial ROS production in endothelial cells (EC) has not yet been reported. We studied the effect of TNF-alpha on mitochondrial ROS generation in EC and the signaling pathways involved. Cultured human umbilical vein EC (HUVEC) were studied by fluorescence microscopy, using dichlorodihydrofluorescein diacetate (DCFH-DA) as a marker of ROS production and propidium iodide uptake for cell viability. TNF-alpha increased DCFH oxidation in HUVEC dose-dependently. To determine the source of ROS, the mitochondrial respiratory chain inhibitors rotenone + thenoyltrifluoroacetone (TTFA), which inhibit electron entry to ubiquinone, and antimycin A (AA), a blocker of ubisemiquinone, were used. Rotenone and TTFA inhibited (n = 7, P < 0.05), whereas AA increased (118% in 3 min; n = 4, P < 0.01) ROS generation in HUVEC. In contrast, ROS production was not abolished by the nicotinamide adenine dinucleotide phosphate-dependent oxidase inhibitor diphenylene iodonium, by the xanthine oxidase inhibitor allopurinol, nor by the nitric oxide and cyclooxygenase pathway inhibitors N(omega)-nitro-L-arginine and mefenamic acid. In addition, TNF-alpha-induced ROS production was inhibited by the acidic sphingomyelinase inhibitor desipramine (5 microM; -80%, n = 4, P < 0.01) and totally blocked by the ceramide-activated protein kinase (CAPK) inhibitor dimethylaminopurine (1 mM; n = 6, P < 0.05). Thus, TNF-alpha induces mitochondrial ROS production in HUVEC that primarily occurs at the ubisemiquinone site and is mediated by ceramide-dependent signaling pathways involving CAPK.
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Affiliation(s)
- S Corda
- Laboratoire d'Anesthésie-Réanimation, Université Paris XI, Hôpital de Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre; France
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Soriano D, Lemoine A, Laplace C, Deval B, Dessolle L, Darai E, Poitout P. Results of recto-vaginal fistula repair: retrospective analysis of 48 cases. Eur J Obstet Gynecol Reprod Biol 2001; 96:75-9. [PMID: 11311765 DOI: 10.1016/s0301-2115(00)00411-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To evaluate the long-term outcome of the Musset technique of recto-vaginal fistula (RVF) repair. STUDY DESIGN During the years 1992-1998, 48 women underwent recto-vaginal fistula repair. A retrospective study in a university tertiary referral center was conducted. RESULTS The main etiologies were obstetrical trauma (25), local infection (11), inflammatory disease (7), and post surgery (3). Thirty women (63%) had a previous fistula repair failure. The mean+/-S.D. fistula diameter was 1.4+/-1.0, and in 40% of the patients the fistula diameter was >2.5cm. In 19 cases (39.6%) there was a complete opening of the perineum and anal sphincter. Gas and stool incontinence before the operation were noted in 85 and 75% of the patients, respectively. Successful anatomic results were achieved in all patients. Five patients were re-operated due to gas and stool incontinence, and all but one had satisfactory anatomic and functional satisfactory results. The success rates in women with Crohn's disease and with a previous RVF repair failure were 100 and 98%, respectively. No major intra or postoperative complications were noted. CONCLUSION The Musset procedure provide excellent anatomic and functional results and women with Crohn's disease or previous RVF repair have comparable long-term results.
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Affiliation(s)
- D Soriano
- Service de Gynécologie, Hôpital Hôtel-Dieu de Paris, University Paris VI, 2 rue d'Arcole, 75004, Paris, France
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Daraï E, Soriano D, Kimata P, Laplace C, Lecuru F. Vaginal hysterectomy for enlarged uteri, with or without laparoscopic assistance: randomized study. Obstet Gynecol 2001; 97:712-6. [PMID: 11339921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
OBJECTIVE To compare short-term results of vaginal hysterectomy (VH) with those of laparoscopically assisted vaginal hysterectomy (LAVH) in women with enlarged uteri. METHODS Eighty women referred for abdominal hysterectomies for benign disease were assigned randomly to vaginal hysterectomy or LAVH. Inclusion criteria were uterine size larger than 280 g and one or more of the following traditional contraindications of vaginal hysterectomy: previous pelvic surgery, history of pelvic inflammatory disease, moderate or severe endometriosis, concomitant adnexal masses, indication for adnexectomy, and nulliparity without uterine descent. RESULTS There were no differences in patients' mean age, parity, rate of postmenopausal state, previous pelvic surgery, preoperative hemoglobin levels, and mean uterine weight. Indications for surgery were similar between groups. No difference was found in the mean +/- standard deviation (SD) uterine weight (range) between vaginal hysterectomy and LAVH groups (424 +/- 211 g [280--930 g] and 513 +/- 360 g [290--1560 g]), respectively. Except for one bladder injury in the laparoscopic group (injury treated laparoscopically), there were no other major complications. Complication rates in vaginal and laparoscopic groups were 15% and 37.5%, respectively (P <.05). Mean operating time was shorter in the vaginal than the laparoscopic group (108 +/- 35 minutes and 156 +/- 50 minutes, respectively [P <.001]). There was no difference in first day hemoglobin level drops or hospital stays between groups. CONCLUSION Vaginal hysterectomy can be successful even in women with enlarged uteri and other conditions considered by some to contraindicate the operation. Laparoscopically assisted vaginal hysterectomy offered no advantages over the standard vaginal hysterectomy.
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Affiliation(s)
- E Daraï
- Service de Gynécologie, Hôpital Hôtel-Dieu de Paris, Paris, France.
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Daraï E, Gompel A, Deval B, Laplace C, Lemoine A, Labeyrie E, Neu AM, Poitout P. [Hormone replacement therapy after endometrial or ovarian cancer]. Gynecol Obstet Fertil 2000; 28:198-204. [PMID: 10786400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Use of hormonal replacement therapy after treatment of ovarian or endometrial cancer remains a matter of debate. Novel adjuvant therapies tend to increase the survival of these patients, who are exposed to risk factors of hormonal deficiency subsequent to primary therapy. Therefore, the aims of the present review of literature was to analyse epidemiologic and clinical parameters on behalf on hormonal replacement therapy in this population.
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Affiliation(s)
- E Daraï
- Service de gynécologie, Hôtel-Dieu, Paris, France
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Darai E, Soriano D, Lemoine A, Laplace C, Deval B, Dessolle L, Poitout P. Long term results of rectovaginal fistula repair: Retrospective analysis of 48 cases. Int J Gynaecol Obstet 2000. [DOI: 10.1016/s0020-7292(00)81845-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kang J, Fehling HJ, Laplace C, Malissen M, Cado D, Raulet DH. T cell receptor gamma gene regulatory sequences prevent the function of a novel TCRgamma/pTalpha pre-T cell receptor. Immunity 1998; 8:713-21. [PMID: 9655485 DOI: 10.1016/s1074-7613(00)80576-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Expression of a TCRgamma transgene in RAG-1-/- mice resulted in the development of a limited number of CD4+CD8+ (DP) thymocytes. In vivo treatments with anti-TCRgamma antibody enhanced the number of DP thymocytes, demonstrating that TCRgamma chains were expressed on the cell surface in the absence of delta, alpha, or beta chains. Mutations in pTalpha or CD3epsilon genes abolished transgene-induced DP cell development, indicating that TCRgamma can associate with pTalpha and CD3 to form a novel pre-TCR. With a transgene containing additional regulatory sequences, TCRgamma expression was down-regulated in DP cells, and little DP cell development occurred. Thus, the function of the endogenous TCRgamma/pTalpha is limited by the transcriptional down-regulation of TCRgamma genes that normally accompanies DP cell development.
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MESH Headings
- Animals
- Gene Expression Regulation/immunology
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/immunology
- Mice
- Mice, Transgenic
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- Receptors, Antigen, T-Cell, gamma-delta/genetics
- Receptors, Antigen, T-Cell, gamma-delta/immunology
- T-Lymphocytes/immunology
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Affiliation(s)
- J Kang
- Department of Molecular and Cell Biology, University of California at Berkeley, 94720, USA
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Fehling HJ, Iritani BM, Krotkova A, Forbush KA, Laplace C, Perlmutter RM, von Boehmer H. Restoration of thymopoiesis in pT alpha-/- mice by anti-CD3epsilon antibody treatment or with transgenes encoding activated Lck or tailless pT alpha. Immunity 1997; 6:703-14. [PMID: 9208843 DOI: 10.1016/s1074-7613(00)80446-x] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Mice deficient for the pre-TCR alpha (pT alpha) chain cannot form a pre-T cell receptor (TCR) and exhibit a severe defect in early T cell development, characterized by lack of "beta selection" and impaired generation of double-positive (DP) thymocytes. Here, we demonstrate that intraperitoneal injection of CD3epsilon-specific antibodies into pT alpha-/- x RAG-/- mice or introduction of an activated p56(lck) transgene in pT alpha-/- mice fully restores the number of DP thymocytes, and that expression of a transgenic pT alpha chain lacking its cytoplasmic portion can overcome all developmental defects associated with pT alpha deficiency. These results allow a better definition of the role of pT alpha in pre-TCR signal transduction and provide conclusive evidence that the cytoplasmic tail of pT alpha is not essential for pre-TCR signaling.
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Fehling HJ, Laplace C, Mattei MG, Saint-Ruf C, von Boehmer H. Genomic structure and chromosomal location of the mouse pre-T-cell receptor alpha gene. Immunogenetics 1995; 42:275-81. [PMID: 7672822 DOI: 10.1007/bf00176445] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The mouse pre-T-cell receptor alpha (pT alpha) chain is a 33,000 M(r) glycoprotein expressed on the surface of immature thymocytes as a disulfide-linked heterodimer with the T-cell receptor beta (TCR beta) chain, and in association with proteins of the CD3 complex. The cDNA for pT alpha, isolated previously, encodes a type I transmembrane protein that is a member of the immunoglobulin (Ig) superfamily. Here we report the complete nucleotide sequence, the exon/intron structure, and the chromosomal location of the pTa gene. The gene spans about 8.4 kilobases (kb) and consists of four exons. Exon 1 encodes the 5' untranslated region, the leader peptide, and the first three amino acids of the mature protein. This exon is followed by a relatively long intron of 4.9 kb that contains many short interspersed repeats (SINEs) of the B1 and B2 family. The second exon encodes the extracellular Ig-like domain and exon 3 with just 45 base pairs the connecting peptide (CP), including the cysteine required for heterodimer formation. A similar exon/intron structure encoding corresponding parts of the mature polypeptide is found both in the Tcra and Tcrd constant region genes. The last exon encodes the transmembrane portion, the cytoplasmic tail, and about 540 nucleotides of 3' untranslated sequence, including a B2 repetitive element. In situ hybridization maps the pTa gene to the D/E1 region of mouse chromosome 17.
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Abstract
Proteasomes degrade endogenous proteins. Two subunits, LMP-2 and LMP-7, are encoded in a region of the major histocompatibility complex (MHC) that is critical for class I-restricted antigen presentation. Mice with a targeted deletion of the gene encoding LMP-7 have reduced levels of MHC class I cell-surface expression and present the endogenous antigen HY inefficiently; addition of peptides to splenocytes deficient in LMP-7 restores wild-type class I expression levels. This demonstrates the involvement of LMP-7 in the MHC class I presentation pathway and suggests that LMP-7 functions as an integral part of the peptide supply machinery.
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Bénavidès J, Savaki HE, Malgouris C, Laplace C, Margelidon C, Daniel M, Courteix J, Uzan A, Guérémy C, Le Fur G. Quantitative autoradiography of [3H]indalpine binding sites in the rat brain: I. Pharmacological characterization. J Neurochem 1985; 45:514-20. [PMID: 3874264 DOI: 10.1111/j.1471-4159.1985.tb04018.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The binding of [3H]indalpine (4-[2-(3-indolyl)]ethyl piperidine) to slide-mounted sections of rat brain has been characterized. This 5-hydroxytryptamine (5-HT) uptake blocker binds to sections with high affinity (KD approximately 1 nM). The binding is saturable, and can be displaced by the addition of clomipramine (1 microM). Other drugs inhibiting the uptake of 5-HT also have the capacity to inhibit the binding of [3H]indalpine. A significant correlation (r = 0.86) was found between the capacity of these compounds to inhibit the uptake of 5-HT and their potencies as inhibitors of [3H]indalpine binding. Binding was Na+ - and Cl- -dependent and was inhibited competitively by 5-HT. Furthermore, electrolytic lesions of the dorsal raphe or medial forebrain bundle, which cause a degeneration of 5-HT cell bodies and fibers, respectively, resulted in a 30-40% reduction in the binding of [3H]indalpine. [3H]Indalpine binds to the 5-HT uptake recognition sites in a different manner from imipramine-like compounds.
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Savaki H, Malgouris C, Bénavidès J, Laplace C, Uzan A, Guérémy C, Le Fur G. Quantitative autoradiography of [3H]indalpine binding sites in the rat brain: II. Regional distribution. J Neurochem 1985; 45:521-6. [PMID: 4009172 DOI: 10.1111/j.1471-4159.1985.tb04019.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The localization of binding sites for [3H]indalpine to sections of rat brain was studied by a quantitative autoradiographic technique. Binding sites for this specific neuronal 5-hydroxytryptamine (5-HT) uptake inhibitor are concentrated in areas rich in 5-HT neuronal cell bodies, fibers, and synaptic terminals. One of the most interesting features of this regional distribution is the very high density of these sites found in the dorsal raphe, substantia nigra, ventral tegmental area, and locus ceruleus. Components of the visual system also show pronounced labelling with [3H]indalpine. The finding that limbic structures are strongly labelled by this drug may be related to the antidepressant activity of indalpine. The anatomical distribution of binding sites demonstrated is consistent with the specific labelling of 5-HT neurons by [3H]indalpine and confirms previous studies carried out with another 5-HT uptake inhibitor, [3H]imipramine.
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Bénavidès J, Savaki HE, Malgouris C, Laplace C, Daniel M, Begassat F, Desban M, Uzan A, Dubroeucq MC, Renault C. Autoradiographic localization of peripheral benzodiazepine binding sites in the cat brain with [3H]PK 11195. Brain Res Bull 1984; 13:69-77. [PMID: 6478272 DOI: 10.1016/0361-9230(84)90009-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
"Peripheral type" benzodiazepine binding sites were labelled in cat brain membranes by using [3H]PK 11195. This ligand binds to the "peripheral type" binding sites in a reversible, specific and saturable manner. Cat brain binding sites density (congruent to 6 pmol/mg prot.) was higher than in the rat. Pharmacological specificity was demonstrated by the potency order of displacing agents: PK 11195 greater than RO5-4864 greater than dipyridamole greater than diazepam greater than clonazepam. A similar characterization was performed in slide mounted brain sections where [3H]PK 11195 also labelled the "peripheral type" benzodiazepine binding sites. The high percentage of specific binding (80%) at 1 nM of [3H]PK 11195 made possible the autoradiographic studies on binding sites distribution. These sites were heterogeneously distributed in the grey matter and absent in white matter. Visual, auditory and other specific sensory relay stations were highly labelled. The blood pressure regulating nuclei, the vestibulo-cerebellar and the extrapyramidal motor system also presented a very high binding density. As previously described in the rat brain, choroid plexus was also strongly labelled by [3H]PK 11195 in the cat.
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