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Claes M, Le Q, Kesters E, Lux M, Urionabarrenetxea A, Vereecke G, Mertens P, Carleer R, Adriaensens P. All-Wet Strip Approaches for Post-Etch Photoresist Layers After Low-K Patterning. ACTA ACUST UNITED AC 2019. [DOI: 10.1149/1.2779377] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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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Afif A, Garcia-Larrea L, Mertens P. The importance of somatotopy to achieve clinical benefit in motor cortex stimulation for pain relief. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Mertens P, André B, Helene S, Jacques L. Treatment of neuropathic pain in patients with spinal cord lesions by intrathecal ziconotide (ITZ). Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Colavita F, Biava M, Mertens P, Gilleman Q, Borlon C, Delli Guanti M, Petrocelli A, Cataldi G, Kamara AT, Kamara SA, Konneh K, Vincenti D, Castilletti C, Abdurahman S, Mirazimi A, Capobianchi MR, Ippolito G, Miccio R, Di Caro A. EBOLA Ag K-SeT rapid test: field evaluation in Sierra Leone. Clin Microbiol Infect 2017; 24:653-657. [PMID: 29107122 DOI: 10.1016/j.cmi.2017.10.019] [Citation(s) in RCA: 7] [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: 07/07/2017] [Revised: 10/19/2017] [Accepted: 10/20/2017] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Efficient interruption of Ebola virus disease (EVD) transmission chains critically depends on reliable and fast laboratory diagnosis. We evaluated the performance of the EBOLA Virus Antigen Detection K-SeT (EBOLA Ag K-SeT), a new rapid diagnostic antigen test in field settings. METHODS The study was conducted in a field laboratory located in Freetown (Sierra Leone) by the Italian National Institute for Infectious Diseases 'L. Spallanzani' and the EMERGENCY Onlus NGO. The EBOLA Ag K-SeT was tested on 210 residual plasma samples (EVD prevalence 50%) from patients hospitalized at the EMERGENCY Ebola treatment center in Goderich (Freetown), comparing the results with quantitative real-time PCR. RESULTS Overall, the sensitivity of EBOLA Ag K-SeT was 88.6% (95% confidence interval (CI), 82.5-94.7), and the corresponding specificity was 98.1% (95% CI, 95.5-100.7). The positive and negative predictive values were 97.9% (95% CI, 95.0-100.8) and 89.6% (95% CI, 84-95.2), respectively. The sensitivity strongly increased up to 98.7% (95% CI, 96.1-101.2) for those samples with high virus load (≥6.2 log RNA copies/mL). CONCLUSIONS Our results suggest that EBOLA Ag K-SeT could represent a new effective diagnostic tool for EVD, meeting a need for resource-poor settings and rapid diagnosis for individuals with suspected EVD.
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Affiliation(s)
- F Colavita
- National Institute for Infectious Diseases 'L. Spallanzani' IRCCS, Rome, Italy
| | - M Biava
- National Institute for Infectious Diseases 'L. Spallanzani' IRCCS, Rome, Italy
| | | | | | - C Borlon
- Coris BioConcept, Gembloux, Belgium
| | | | | | | | - A T Kamara
- EMERGENCY Onlus NGO, Milan, Italy; Diagnostic Ebola Virus Diseases Laboratory, 'Princess Christian Maternity Hospital', Freetown, Sierra Leone
| | - S A Kamara
- EMERGENCY Onlus NGO, Milan, Italy; Diagnostic Ebola Virus Diseases Laboratory, 'Princess Christian Maternity Hospital', Freetown, Sierra Leone
| | - K Konneh
- EMERGENCY Onlus NGO, Milan, Italy; Diagnostic Ebola Virus Diseases Laboratory, 'Princess Christian Maternity Hospital', Freetown, Sierra Leone
| | - D Vincenti
- National Institute for Infectious Diseases 'L. Spallanzani' IRCCS, Rome, Italy
| | - C Castilletti
- National Institute for Infectious Diseases 'L. Spallanzani' IRCCS, Rome, Italy
| | - S Abdurahman
- Public Health Agency of Sweden, Stockholm, Sweden
| | - A Mirazimi
- Public Health Agency of Sweden, Stockholm, Sweden; National Veterinary Institute, Uppsala, Sweden; Department of Medicine, Karolinska Institute, Stockholm, Sweden
| | - M R Capobianchi
- National Institute for Infectious Diseases 'L. Spallanzani' IRCCS, Rome, Italy
| | - G Ippolito
- National Institute for Infectious Diseases 'L. Spallanzani' IRCCS, Rome, Italy
| | - R Miccio
- EMERGENCY Onlus NGO, Milan, Italy
| | - A Di Caro
- National Institute for Infectious Diseases 'L. Spallanzani' IRCCS, Rome, Italy.
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Thomas NJ, Mertens P, Danaila T, Polo G, Klinger H, Broussolle E, Thobois S. Optimizing the deep brain stimulation care pathway in patients with Parkinson's disease. J Neurol 2017. [PMID: 28631129 DOI: 10.1007/s00415-017-8548-2] [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] [Indexed: 01/12/2023]
Abstract
Management of Parkinson's disease (PD) using deep brain stimulation (DBS) requires complex care in specialized, multidisciplinary centers. A well-organized, efficient patient flow is crucial to ensure that eligible patients can quickly access DBS. Delays or inefficiencies in patient care may impact a center's ability to meet demand, creating a capacity bottleneck. Analysis of the current practices within a center may help identify areas for improvement. After external audit of the DBS workflow of the Lyon Neurological Hospital and comparison with other European centers, manageable steps were suggested to restructure the care pathway. Propositions of the audit comprised, for example: (1) directly admitting referred patients to hospital, without a prior neurological outpatient visit and (2) including the preoperative anesthesia consultation in the hospital stay 1 month before surgery, not separately. This reorganization (between 2013 and 2016) was performed without increases in hospital medical resources or costs. The time from patients' first referral to surgery was reduced (from 22 to 16 months; p = 0.033), as was the number of pre- and postoperative patient visits (11-5; p = 0.025) and the total cumulative length of in-hospital stay (20.5-17.5 nights; p = 0.02). Ultimately, the total number of PD consultations increased (346-498 per year), as did the number of DBS implants per year (32-45 patients). In this single center experience, restructuring the DBS care pathway allowed a higher number of PD patients to benefit from DBS therapy, with a shorter waiting time and without decreasing the quality of care.
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Affiliation(s)
- N J Thomas
- Department of Integrated Health Solutions, Medtronic Trading International Sàrl Europe, Tolochenaz, Switzerland
| | - P Mertens
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurochirurgie A, Bron, France.,Faculté de Médecin Lyon Est, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - T Danaila
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurologie C, Bron, France
| | - G Polo
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurochirurgie A, Bron, France
| | - H Klinger
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurologie C, Bron, France
| | - E Broussolle
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurologie C, Bron, France.,Faculté de Médecin Lyon Sud Charles Mérieux, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France.,Institut des Sciences Cognitives Marc Jeannerod, Centre de Neurosciences Cognitives, CNRS, UMR 5229, Bron, France
| | - S Thobois
- Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer, Neurologie C, Bron, France. .,Faculté de Médecin Lyon Sud Charles Mérieux, Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France. .,Institut des Sciences Cognitives Marc Jeannerod, Centre de Neurosciences Cognitives, CNRS, UMR 5229, Bron, France.
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Sakas DE, Krauss JK, Regis J, Scerrati M, van Loon J, Sindou M, Mertens P. Training charter in spasticity neurosurgery added competence. Acta Neurochir (Wien) 2017; 159:967-972. [PMID: 28401319 DOI: 10.1007/s00701-017-3147-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 03/07/2017] [Indexed: 11/25/2022]
Affiliation(s)
- D E Sakas
- Department of Neurosurgery, University of Athens Medical School, Evangelismos Hospital, 4 Marasli Street, 10676, Athens, Greece.
| | - J K Krauss
- Department of Neurosurgery, Medical University of Hannover, Hannover, Germany
| | - J Regis
- Service de Neurochirurgie Fonctionnelle & Stéréotaxique, Hôpital d' Adulte de la Timone, Marseilles, France
| | - M Scerrati
- Department of Neurosurgery, Umberto I General Hospital, Università Politecnica delle Marche, Ancona, Italy
| | - J van Loon
- Research Group, Experimental Neurosurgery & Neuroanatomy, Leuven, Belgium
| | - M Sindou
- Department of Neurosurgery, Hôpital Neurologique P. Wertheimer, Hospices Civils de Lyon, Universite Lyon 1, Lyon, France
| | - P Mertens
- Department of Neurosurgery, Hôpital Neurologique P. Wertheimer, Hospices Civils de Lyon, Universite Lyon 1, Lyon, France
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Rohr I, Sehouli J, En-Nia A, Heinrich M, Richter R, Chekerov R, Dechend R, Heidecke H, Dragun D, Schäfer R, Gorny X, Lindquist J, Brandt S, Braicu E, Mertens P. Y-box protein-1/p18 as novel serum marker for ovarian cancer diagnosis: A study by the Tumor Bank Ovarian Cancer (TOC). Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1593015] [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] Open
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8
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Fowler VL, Howson ELA, Flannery J, Romito M, Lubisi A, Agüero M, Mertens P, Batten CA, Warren HR, Castillo-Olivares J. Development of a Novel Reverse Transcription Loop-Mediated Isothermal Amplification Assay for the Rapid Detection of African Horse Sickness Virus. Transbound Emerg Dis 2016; 64:1579-1588. [PMID: 27484889 PMCID: PMC5600106 DOI: 10.1111/tbed.12549] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Indexed: 12/24/2022]
Abstract
African horse sickness (AHS) is a disease of equids caused by African Horse Sickness Virus (AHSV) and is transmitted by Culicoides midges. AHS is endemic in sub‐Saharan Africa, but during the past century, outbreaks of significant economic importance and elevated mortality have been recorded in Northern African countries, the Iberian and Arabian Peninsula, the Middle East and the Indian subcontinent. Effective control combines the application of early warning systems, accurate laboratory diagnosis and reporting, animal movement restrictions, suitable vaccination and surveillance programs, and the coordination of all these measures by efficient veterinary services. Conventional reverse‐transcriptase (RT) PCR (RT‐PCR) and real‐time RT‐PCR (rRT‐PCR) assays have improved the sensitivity and rapidity of diagnosing AHS, resulting in the adoption of these methods as recommended tests by the World Organisation for Animal Health (OIE). However, currently these assays are only performed within laboratory settings; therefore, the development of field diagnostics for AHS would improve the fast implementation of control policies. Loop‐mediated isothermal amplification (LAMP) is an isothermal, autocycling, strand‐displacement nucleic acid amplification technique which can be performed in the field. LAMP assays are attractive molecular assays because they are simple to use, rapid, portable and have sensitivity and specificity within the range of rRT‐PCR. This study describes the development of a novel RT‐LAMP assay for the detection of AHSV. The AHSV RT‐LAMP assay has an analytical sensitivity of 96.1% when considering an rRT‐PCR cut‐off value of CT > 36, or 91.3% when no rRT‐PCR cut‐off is applied. Diagnostic sensitivity and specificity were 100%. This assay provides for a rapid and low cost AHS diagnostic for use in the field.
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Affiliation(s)
- V L Fowler
- The Pirbright Institute, Pirbright, Woking, Surrey, UK
| | - E L A Howson
- The Pirbright Institute, Pirbright, Woking, Surrey, UK
| | - J Flannery
- The Pirbright Institute, Pirbright, Woking, Surrey, UK
| | - M Romito
- ARC-Onderstepoort Veterinary Institute, Onderstepoort, South Africa
| | - A Lubisi
- ARC-Onderstepoort Veterinary Institute, Onderstepoort, South Africa
| | - M Agüero
- Laboratorio Central de Veterinaria-Sanidad Animal, Algete (Madrid), Spain
| | - P Mertens
- The Pirbright Institute, Pirbright, Woking, Surrey, UK
| | - C A Batten
- The Pirbright Institute, Pirbright, Woking, Surrey, UK
| | - H R Warren
- OptiGene Limited, Horsham, West Sussex, UK
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Lohfink K, Adamchic I, Seidensticker M, Becker S, Steffen I, Schiefer J, Heller A, Mertens P, Ricke J. Renale sympathische Denervation durch CT-gesteuerte Ethanol-Injektion, eine Phase-II-Pilotstudie. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581522] [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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Becker S, Chatigre J, Gohou JP, Coulibaly J, Leuppi R, Polman K, Chappuis F, Mertens P, Herrmann M, N'Goran E, Utzinger J, von Müller L. Combined stool-based multiplex PCR and microscopy for enhanced pathogen detection in patients with persistent diarrhoea and asymptomatic controls from Côte d’Ivoire. Clin Microbiol Infect 2015; 21:591.e1-10. [DOI: 10.1016/j.cmi.2015.02.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/06/2015] [Accepted: 02/19/2015] [Indexed: 02/04/2023]
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Sindou M, Mertens P. Posterior Fossa Approaches with Preservation of the Sensory Occipital Nerves: Microsurgical Anatomy and Surgical Implications. Skull Base Surg 2015. [DOI: 10.1159/000429930] [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: 11/19/2022]
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Sindou M, Mertens P. Microsurgical Vascular Decompression in Trigeminal and Glossovagopharyngeal Neuralgias. Skull Base Surg 2015. [DOI: 10.1159/000430018] [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: 11/19/2022]
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Fontaine D, Blond S, Mertens P, Lanteri-Minet M. [Neurosurgical treatment of chronic pain]. Neurochirurgie 2015; 61:22-9. [PMID: 25681114 DOI: 10.1016/j.neuchi.2014.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 10/28/2014] [Accepted: 11/01/2014] [Indexed: 11/19/2022]
Abstract
Neurosurgical treatment of pain used two kind of techniques: 1) Lesional techniques interrupt the transmission of nociceptive neural input by lesionning the nociceptive pathways (drezotomy, cordotomy, tractotomy…). They are indicated to treat morphine-resistant cancer pain and few cases of selected neuropathic pain. 2) Neuromodulation techniques try to decrease pain by reinforcing inhibitory and/or to limit activatory mechanisms. Chronic electrical stimulation of the nervous system (peripheral nerve stimulation, spinal cord stimulation, motor cortex stimulation…) is used to treat chronic neuropathic pain. Intrathecal infusion of analgesics (morphine, ziconotide…), using implantable pumps, allows to increase their efficacy and to reduce their side effects. These techniques can improve, sometimes dramatically, selected patients with severe and chronic pain, refractory to all other treatments. The quality of the analgesic outcome depends on the relevance of the indications.
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Affiliation(s)
- D Fontaine
- Service de neurochirurgie, CHU de Nice, 06000 Nice, France.
| | - S Blond
- Service de neurochirurgie, CHU de Lille, 59037 Lille, France
| | - P Mertens
- Service de neurochirurgie, Hospices Civil de Lyon, 69003 Lyon, France
| | - M Lanteri-Minet
- Département d'évaluation et de traitement de la douleur, CHU de Nice, 06000 Nice, France
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Blond S, Mertens P, David R, Roulaud M, Rigoard P. From "mechanical" to "neuropathic" back pain concept in FBSS patients. A systematic review based on factors leading to the chronification of pain (part C). Neurochirurgie 2015; 61 Suppl 1:S45-56. [PMID: 25596973 DOI: 10.1016/j.neuchi.2014.11.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [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: 08/05/2014] [Revised: 11/21/2014] [Accepted: 11/22/2014] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Beyond initial lesions, any form of spinal (re)operation can cause direct potential aggression to the nervous system by contact with neural tissue or by imprinting a morphological change on the neural tissue. The potential consequences of nerve root injury affect both peripheral and axial dermatomal distribution. The hypothesis of a possible neuropathic aspect associated with the back pain component of failed back surgery syndrome (FBSS) therefore appears to be reasonable. Its pathophysiology remains unclear due to the permanent interplay between nociceptive and neuropathic pain components, resulting in the coexistence of physiological and pathological pain at the same anatomical site. This paper is designed to extensively review the fundamental mechanisms leading to chronification of pain and to suggest considering the emerging concept of "neuropathic back pain". METHODS Literature searches included an exhaustive review of 643 references and 74 book chapters updated by searching the major electronic databases from 1930 to August 2013. RESULTS Inflammatory and neuropathic back pain could be distinguished from pure nociceptive pain as a result of an increased activity and responsiveness of sensitized receptors at the peripheral nervous system and also as a consequence of increased afferent inflow to the central nervous system, moving to a new, more excitable "wind-up" state. This can be clinically translated to an amplified response to a moderate/intense stimulus (primary hyperalgesia) or an aversive sensation provoked by the activation of low-threshold mechanoreceptors through non-noxious stimuli, which defines allodynia. Activated non-neuronal cells including microglia have been found to be cellular intermediaries in mechanical allodynia. Major changes in the spinal cord are the loss of inhibitory mechanisms, resulting in an increased activity of interneurons or projection neurons and a structural reorganization of the central projection pattern. This abnormal excitability of sensory neurons is coupled to changes in the neurotransmitter phenotype, which could induce a resistance to conventional analgesic treatments. CONCLUSION A clear understanding of the factors leading to the chronification of back pain should help us to move to the choice of mechanism related pain treatments to improve outcomes in FBSS chronic condition.
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Affiliation(s)
- S Blond
- Department of Neurosurgery, Lille University Hospital, 59037 Lille Cedex, France
| | - P Mertens
- Department of Neurosurgery, Lyon University Hospital, 69677 Lyon Cedex, France; Laboratory of Anatomy, Faculty of Medicine, 69677 Lyon Cedex, France
| | - R David
- Department of Neurosurgery, Poitiers University Hospital, 86021 Poitiers Cedex, France; N3 Lab: Neuromodulation & Neural Networks, Poitiers University Hospital, 86021 Poitiers Cedex, France
| | - M Roulaud
- Department of Neurosurgery, Poitiers University Hospital, 86021 Poitiers Cedex, France; N3 Lab: Neuromodulation & Neural Networks, Poitiers University Hospital, 86021 Poitiers Cedex, France
| | - P Rigoard
- Department of Neurosurgery, Poitiers University Hospital, 86021 Poitiers Cedex, France; N3 Lab: Neuromodulation & Neural Networks, Poitiers University Hospital, 86021 Poitiers Cedex, France; Inserm CIC 802, 86021 Poitiers Cedex, France.
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Verhaegen J, Clockaerts S, Van Osch G, Somville J, Verdonk P, Mertens P. TruFit Plug for Repair of Osteochondral Defects-Where Is the Evidence? Systematic Review of Literature. Cartilage 2015; 6:12-9. [PMID: 26069706 PMCID: PMC4462248 DOI: 10.1177/1947603514548890] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [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] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVE Treatment of osteochondral defects remains a challenge in orthopedic surgery. The TruFit plug has been investigated as a potential treatment method for osteochondral defects. This is a biphasic scaffold designed to stimulate cartilage and subchondral bone formation. The aim of this study is to investigate clinical, radiological, and histological efficacy of the TruFit plug in restoring osteochondral defects in the joint. DESIGN We performed a systematic search in five databases for clinical trials in which patients were treated with a TruFit plug for osteochondral defects. Studies had to report clinical, radiological, or histological outcome data. Quality of the included studies was assessed. RESULTS Five studies describe clinical results, all indicating improvement at follow-up of 12 months compared to preoperative status. However, two studies reporting longer follow-up show deterioration of early improvement. Radiological evaluation indicates favorable MRI findings regarding filling of the defect and incorporation with adjacent cartilage at 24 months follow-up, but conflicting evidence exists on the properties of the newly formed overlying cartilage surface. None of the included studies showed evidence for bone ingrowth. The few histological data available confirmed these results. CONCLUSION There are no data available that support superiority or equality of TruFit compared to conservative treatment or mosaicplasty/microfracture. Further investigation is needed to improve synthetic biphasic implants as therapy for osteochondral lesions. Randomized controlled clinical trials comparing TruFit plugs with an established treatment method are needed before further clinical use can be supported.
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Affiliation(s)
- J. Verhaegen
- Department of Orthopaedic Surgery and Traumatology, University of Antwerp, Antwerp, Belgium
| | - S. Clockaerts
- Department of Orthopaedic Surgery and Traumatology, University of Antwerp, Antwerp, Belgium,Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - G.J.V.M. Van Osch
- Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - J. Somville
- Department of Orthopaedic Surgery and Traumatology, University of Antwerp, Antwerp, Belgium
| | - P. Verdonk
- Department Orthopaedic Surgery, Monica Hospital, Antwerp, Belgium,Faculty of Medicine, Ghent University, Belgium
| | - P. Mertens
- Department of Orthopaedics and Traumatology, ZNA Middelheim Hospital, Antwerp, Belgium
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Georgoulis G, Papagrigoriou E, Mertens P, Sindou M. Neuromonitorage du diaphragme pour la chirurgie du rachis cervical. Étude des réponses diaphragmatiques à la stimulation de la racine C4 sur des enregistrements de courbes sur l’appareil d’anesthésie. Neurochirurgie 2014. [DOI: 10.1016/j.neuchi.2014.10.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mertens P, Blond S, David R, Rigoard P. Anatomy, physiology and neurobiology of the nociception: a focus on low back pain (part A). Neurochirurgie 2014; 61 Suppl 1:S22-34. [PMID: 25441598 DOI: 10.1016/j.neuchi.2014.09.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [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: 07/01/2014] [Revised: 09/05/2014] [Accepted: 09/21/2014] [Indexed: 12/13/2022]
Abstract
INTRODUCTION The treatment of Failed Back Surgery Syndrome (FBSS) remains a challenge for pain medicine due to the complexity in the interactions between [1] a residual mechanical pain after surgery and, [2] a progressive transition into chronic pain involving central nervous system plasticity and molecular reorganization. The aim of this paper is to provide a fundamental overview of the pain pathway supporting the nociceptive component of the back pain. METHODS Literature searches included an exhaustive review of 643 references and 74 book chapters updated by searching the major electronic databases from 1930 to August 2013. RESULTS Pain input is gathered by the peripheral fibre from the innervated tissue's environment and relayed by two contiguous central axons to the brain, via the spinal cord. At this level, it is possible to characterize physical pain and emotional pain. These are supported by two different pathways, encoding two dimensions of pain perception: In Neo-spino-thalamic pathway, the wide dynamic range neuron system is able to provide the information needed for mapping the "sensory-discriminative" dimension of pain. The second projection system (Paleo-spino-thalamic pathway) also involves the ventromedial thalamus but projects to the amygdala, the insula and the anterior cingulate cortex. These areas are associated with emotionality and affect. CONCLUSION The mechanical component of FBSS cannot be understood unless the functioning of the pain system is known. But ultimately, the highly variable nature of back pain expression among individuals would require a careful pathophysiological dissection of the potential generators of back pain to guide pain management strategies.
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Affiliation(s)
- P Mertens
- Department of Neurosurgery, Lyon University hospital, 69677 Lyon cedex, France; Laboratory of Anatomy, Faculty of Medicine, 69677 Lyon cedex, France
| | - S Blond
- Department of Neurosurgery, Lille University Hospital, 59037 Lille cedex , France
| | - R David
- Service de neurochirurgie, unité rachis et neurostimulation, Poitiers University Hospital, 2, rue de la Milétrie, 86021 Poitiers cedex, France; N(3)Lab: Neuromodulation & Neural Networks, Poitiers University Hospital, Poitiers, France
| | - P Rigoard
- Service de neurochirurgie, unité rachis et neurostimulation, Poitiers University Hospital, 2, rue de la Milétrie, 86021 Poitiers cedex, France; N(3)Lab: Neuromodulation & Neural Networks, Poitiers University Hospital, Poitiers, France; Inserm CIC 802, 86021 Poitiers, France.
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Rigoard P, Blond S, David R, Mertens P. Pathophysiological characterisation of back pain generators in failed back surgery syndrome (part B). Neurochirurgie 2014; 61 Suppl 1:S35-44. [PMID: 25456443 DOI: 10.1016/j.neuchi.2014.10.104] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 07/02/2014] [Accepted: 10/08/2014] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Low back surgery, including as many type of spine procedures as the multitude of failed back surgery syndrome (FBSS) etiologies, is not always the answer for patients with chronic low back pain. Paradoxically, although a patient is considered to present FBSS because he has already undergone spinal surgery, any new symptom in the back or deterioration of back pain must not be immediately attributed to FBSS, but could be related to another cause independently of the initial mechanical problem. The aim of this paper is to extensively review the potential back pain generators in FBSS patients and to discuss their respective roles and interactions in back pain pathophysiology. METHODS Literature searches included an exhaustive review of 643 references and 74 book chapters updated by searching the major electronic databases from 1930 to August 2013. RESULTS Nociceptive fibres innervating any of the back anatomical structures can all play a part in the pathogenesis of the low back pain component in FBSS. The main spinal pain generators are not only myofascial syndrome or muscle spasm but also the facets, the disc complex or a sagittal imbalance and should therefore be carefully reviewed. Only after these steps and appropriate imaging, would it be justified to irremediably diagnose the patient with a refractory chronic condition, requiring no further spine surgery and to propose "palliative" pain treatment options. CONCLUSION Clinical investigations of the low back pain component in FBSS patients should be based on meticulous dissection of all potential triggers that could be a source of the nociceptive pain characteristics and possibly amenable to further aetiological treatment. Clinicians should therefore refine pain management strategies to ensure that the chronic nature of the pain becomes the guiding principle for multidisciplinary assessment.
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Affiliation(s)
- P Rigoard
- Department of Neurosurgery, Poitiers University Hospital, 86021 Poitiers cedex, France; N3Lab: Neuromodulation & Neural Networks, Poitiers University Hospital, 86021 Poitiers cedex, France; Inserm CIC 802, Poitiers, 86021 Poitiers cedex, France.
| | - S Blond
- Department of Neurosurgery, Lille University Hospital, 59037 Lille cedex, France
| | - R David
- Department of Neurosurgery, Poitiers University Hospital, 86021 Poitiers cedex, France; N3Lab: Neuromodulation & Neural Networks, Poitiers University Hospital, 86021 Poitiers cedex, France
| | - P Mertens
- Department of Neurosurgery, Lyon University hospital, 69677 Lyon cedex, France; Laboratory of Anatomy, Faculty of Medicine, 69677 Lyon cedex, France
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Roulaud M, Durand-Zaleski I, Ingrand P, Serrie A, Diallo B, Peruzzi P, Hieu PD, Voirin J, Raoul S, Page P, Fontaine D, Lantéri-Minet M, Blond S, Buisset N, Cuny E, Cadenne M, Caire F, Ranoux D, Mertens P, Naous H, Simon E, Emery E, Gadan B, Regis J, Sol JC, Béraud G, Debiais F, Durand G, Guetarni Ging F, Prévost A, Brandet C, Monlezun O, Delmotte A, d'Houtaud S, Bataille B, Rigoard P. Multicolumn spinal cord stimulation for significant low back pain in failed back surgery syndrome: design of a national, multicentre, randomized, controlled health economics trial (ESTIMET Study). Neurochirurgie 2014; 61 Suppl 1:S109-16. [PMID: 25456442 DOI: 10.1016/j.neuchi.2014.10.105] [Citation(s) in RCA: 11] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 09/24/2014] [Accepted: 10/04/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Many studies have demonstrated the efficacy of spinal cord stimulation (SCS) for chronic neuropathic radicular pain over recent decades, but despite global favourable outcomes in failed back surgery syndrome (FBSS) with leg pain, the back pain component remains poorly controlled by neurostimulation. Technological and scientific progress has led to the development of new SCS leads, comprising a multicolumn design and a greater number of contacts. The efficacy of multicolumn SCS lead configurations for the treatment of the back pain component of FBSS has recently been suggested by pilot studies. However, a randomized controlled trial must be conducted to confirm the efficacy of new generation multicolumn SCS. Évaluation médico-économique de la STImulation MEdullaire mulTi-colonnes (ESTIMET) is a multicentre, randomized study designed to compare the clinical efficacy and health economics aspects of mono- vs. multicolumn SCS lead programming in FBSS patients with radicular pain and significant back pain. MATERIALS AND METHODS FBSS patients with a radicular pain VAS score≥50mm, associated with a significant back pain component were recruited in 14 centres in France and implanted with multicolumn SCS. Before the lead implantation procedure, they were 1:1 randomized to monocolumn SCS (group 1) or multicolumn SCS (group 2). Programming was performed using only one column for group 1 and full use of the 3 columns for group 2. Outcome assessment was performed at baseline (pre-implantation), and 1, 3, 6 and 12months post-implantation. The primary outcome measure was a reduction of the severity of low back pain (bVAS reduction≥50%) at the 6-month visit. Additional outcome measures were changes in global pain, leg pain, paraesthesia coverage mapping, functional capacities, quality of life, neuropsychological aspects, patient satisfaction and healthcare resource consumption. TRIAL STATUS Trial recruitment started in May 2012. As of September 2013, all 14 study centres have been initiated and 112/115 patients have been enrolled. Preliminary results are expected to be published in 2015. TRIAL REGISTRATION Clinical trial registration information-URL: www.clinicaltrials.gov. Unique identifier NCT01628237.
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Affiliation(s)
- M Roulaud
- N(3)lab (Neuromodulation and Neural Networks), Inserm CIC 802, Poitiers University Hospital, 86000 Poitiers, France.
| | - I Durand-Zaleski
- Clinical Research Unit in Economics, Hôtel Dieu, 75004 Paris, France
| | - P Ingrand
- Faculty of medicine and pharmacy, Poitiers University Hospital, 86000 Poitiers, France
| | - A Serrie
- Pain Evaluation and Treatment Centre, Lariboisière Hospital, 75010 Paris, France
| | - B Diallo
- Pain Evaluation and Treatment Centre, Poitiers University Hospital, 86000 Poitiers, France
| | - P Peruzzi
- Department of Neurosurgery, Reims University Hospital, 51092 Reims, France
| | - P D Hieu
- Pain Evaluation and Treatment Centre, Brest University Hospital, 29200 Brest, France
| | - J Voirin
- Department of Neurosurgery, Colmar Hospital, 68024 Colmar, France
| | - S Raoul
- Department of Neurosurgery, Nantes University Hospital, 44093 Nantes, France
| | - P Page
- Department of Neurosurgery, Sainte-Anne Hospital, AP-HP, 75014 Paris, France
| | - D Fontaine
- Department of Neurosurgery, Nice University Hospital, 06003 Nice, France
| | - M Lantéri-Minet
- Department of Neurosurgery, Nice University Hospital, 06003 Nice, France
| | - S Blond
- Department of Neurosurgery, Lille University Hospital, 59037 Lille, France
| | - N Buisset
- Department of Neurosurgery, Lille University Hospital, 59037 Lille, France
| | - E Cuny
- Department of Neurosurgery, Bordeaux University Hospital, 33076 Bordeaux, France
| | - M Cadenne
- Department of Neurosurgery, Bordeaux University Hospital, 33076 Bordeaux, France
| | - F Caire
- Department of Neurosurgery, Limoges University Hospital, 87042 Limoges, France
| | - D Ranoux
- Department of Neurosurgery, Limoges University Hospital, 87042 Limoges, France
| | - P Mertens
- Department of Neurosurgery, Lyon University Hospital, 69677 Lyon, France
| | - H Naous
- Department of Neurosurgery, Lyon University Hospital, 69677 Lyon, France
| | - E Simon
- Department of Neurosurgery, Lyon University Hospital, 69677 Lyon, France
| | - E Emery
- Department of Neurosurgery, Caen University Hospital, 14000 Caen, France
| | - B Gadan
- Department of Neurosurgery, Caen University Hospital, 14000 Caen, France
| | - J Regis
- Department of Neurosurgery, AP-HM, Timone Hospital, 13385 Marseille, France
| | - J-C Sol
- Department of Neurosurgery, Toulouse University Hospital, 31000 Toulouse, France
| | - G Béraud
- Internal Medicine/Infectious and Tropical Diseases Department, Poitiers University Hospital, 86000 Poitiers, France
| | - F Debiais
- Department of Rheumatology, Poitiers University Hospital, 86000 Poitiers, France
| | - G Durand
- Department of Rheumatology, Poitiers University Hospital, 86000 Poitiers, France
| | - F Guetarni Ging
- N(3)lab (Neuromodulation and Neural Networks), Inserm CIC 802, Poitiers University Hospital, 86000 Poitiers, France
| | - A Prévost
- N(3)lab (Neuromodulation and Neural Networks), Inserm CIC 802, Poitiers University Hospital, 86000 Poitiers, France
| | - C Brandet
- N(3)lab (Neuromodulation and Neural Networks), Inserm CIC 802, Poitiers University Hospital, 86000 Poitiers, France
| | - O Monlezun
- N(3)lab (Neuromodulation and Neural Networks), Inserm CIC 802, Poitiers University Hospital, 86000 Poitiers, France
| | - A Delmotte
- Department of Neurosurgery, Spine-Neurostimulation Unit, Poitiers University Hospital, 86000 Poitiers, France
| | - S d'Houtaud
- Department of Neurosurgery, Spine-Neurostimulation Unit, Poitiers University Hospital, 86000 Poitiers, France
| | - B Bataille
- Department of Neurosurgery, Spine-Neurostimulation Unit, Poitiers University Hospital, 86000 Poitiers, France
| | - P Rigoard
- N(3)lab (Neuromodulation and Neural Networks), Inserm CIC 802, Poitiers University Hospital, 86000 Poitiers, France; Department of Neurosurgery, Spine-Neurostimulation Unit, Poitiers University Hospital, 86000 Poitiers, France
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Preininger R, Schmuhl C, Heller A, Klose S, Mertens P. [Surgery Meets Nephrology: Opioid Therapy of Patients with Renal Failure]. Zentralbl Chir 2014; 141:82-3. [PMID: 25393735 DOI: 10.1055/s-0034-1382844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- R Preininger
- Klinik für Nephrologie, Hypertension, Diabetes und Endokrinologie, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Deutschland
| | - C Schmuhl
- Klinik für Nephrologie, Hypertension, Diabetes und Endokrinologie, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Deutschland
| | - A Heller
- Klinik für Nephrologie, Hypertension, Diabetes und Endokrinologie, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Deutschland
| | - S Klose
- Klinik für Nephrologie, Hypertension, Diabetes und Endokrinologie, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Deutschland
| | - P Mertens
- Klinik für Nephrologie, Hypertension, Diabetes und Endokrinologie, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Deutschland
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Danaila T, Polo G, Klinger H, Broussolle E, Mertens P, Lesage S, Brice A, Thobois S. Efficacy of subthalamic nucleus stimulation in C9ORF72 expansion related parkinsonism. Parkinsonism Relat Disord 2014; 20:1104-5. [PMID: 25085746 DOI: 10.1016/j.parkreldis.2014.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 06/30/2014] [Accepted: 07/14/2014] [Indexed: 10/25/2022]
Affiliation(s)
- T Danaila
- Hospices Civils de Lyon, Centre Expert Parkinson, Service de Neurologie C, Hôpital Neurologique "Pierre Wertheimer", Lyon, France.
| | - G Polo
- Hospices Civils de Lyon, Service de Neurochirurgie A, Hôpital Neurologique "Pierre Wertheimer", Lyon, France
| | - H Klinger
- Hospices Civils de Lyon, Centre Expert Parkinson, Service de Neurologie C, Hôpital Neurologique "Pierre Wertheimer", Lyon, France
| | - E Broussolle
- Hospices Civils de Lyon, Centre Expert Parkinson, Service de Neurologie C, Hôpital Neurologique "Pierre Wertheimer", Lyon, France; Université Claude Bernard Lyon 1, Faculté de Médecine « Lyon Sud Charles Mérieux », Lyon, France; Basal Ganglia Team, Laboratoire de Neurosciences Cognitives, CMRS - UMR 52 29, Institut des Sciences Cognitives, Bron, France
| | - P Mertens
- Hospices Civils de Lyon, Service de Neurochirurgie A, Hôpital Neurologique "Pierre Wertheimer", Lyon, France; Université Claude Bernard Lyon 1, Faculté de Médecine « Lyon Sud Charles Mérieux », Lyon, France; Basal Ganglia Team, Laboratoire de Neurosciences Cognitives, CMRS - UMR 52 29, Institut des Sciences Cognitives, Bron, France
| | - S Lesage
- Université Pierre et Marie Curie-Paris 6, Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière, UMR-S975, Paris, France; Inserm, U975, Paris, France; CNRS, UMR 7225, Paris, France
| | - A Brice
- Université Pierre et Marie Curie-Paris 6, Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière, UMR-S975, Paris, France; Inserm, U975, Paris, France; CNRS, UMR 7225, Paris, France; AP-HP, Hôpital de la Salpêtrière, Département de Génétique et Cytogénétique, Paris, France
| | - S Thobois
- Hospices Civils de Lyon, Centre Expert Parkinson, Service de Neurologie C, Hôpital Neurologique "Pierre Wertheimer", Lyon, France; Université Claude Bernard Lyon 1, Faculté de Médecine « Lyon Sud Charles Mérieux », Lyon, France; Basal Ganglia Team, Laboratoire de Neurosciences Cognitives, CMRS - UMR 52 29, Institut des Sciences Cognitives, Bron, France
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Leston J, Harthé C, Mottolese C, Mertens P, Sindou M, Claustrat B. Is pineal melatonin released in the third ventricle in humans? A study in movement disorders. Neurochirurgie 2014; 61:85-9. [PMID: 24975205 DOI: 10.1016/j.neuchi.2013.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 04/10/2013] [Accepted: 04/12/2013] [Indexed: 11/29/2022]
Abstract
In order to determine sources and metabolism of melatonin in human cerebrospinal fluid (CSF), melatonin and 6-sulfatoxymelatonin (aMT6S) concentrations were measured in CSF sampled during neurosurgery in both lateral and third ventricles in patients displaying movement disorder (Parkinson's disease, essential tremor, dystonia or dyskinesia) and compared with their plasma levels. Previous determinations in nocturnal urine had showed that the patients displayed melatonin excretion in the normal range, compared with healthy controls matched according to age. A significant difference in melatonin concentration was observed between lateral and third ventricles, with the highest levels in the third ventricle (8.75±2.75pg/mL vs. 3.20±0.33pg/mL, P=0.01). CSF aMT6s levels were similar in both ventricles and of low magnitude, less than 5pg/mL. They were not correlated with melatonin levels or influenced by the area of sampling. Melatonin levels were significantly higher in third ventricle than in the plasma, whereas there was no difference between plasma and lateral ventricle levels. These findings show that melatonin may enter directly the CSF through the pineal recess in humans. The physiological meaning of these data remains to be elucidated.
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Affiliation(s)
- J Leston
- Neurosurgical Unit A, P.-Wertheimer Hospital, Bron, France; Inserm, U846, Department of Chronobiology, Stem Cell and Brain Research Institute, Bron, France
| | - C Harthé
- Hormone Laboratory, Centre of Nuclear Medicine, Department of Chronobiology, Stem Cell and Brain Research Institute, Groupement Hospitalier Est, 59, boulevard Pinel, 69677 Bron, France
| | - C Mottolese
- Neurosurgical Unit B, P.-Wertheimer Hospital, Bron, France
| | - P Mertens
- Neurosurgical Unit A, P.-Wertheimer Hospital, Bron, France
| | - M Sindou
- Neurosurgical Unit A, P.-Wertheimer Hospital, Bron, France
| | - B Claustrat
- Hormone Laboratory, Centre of Nuclear Medicine, Department of Chronobiology, Stem Cell and Brain Research Institute, Groupement Hospitalier Est, 59, boulevard Pinel, 69677 Bron, France; Inserm, U846, Department of Chronobiology, Stem Cell and Brain Research Institute, Bron, France.
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Simon E, Afif A, M'Baye M, Mertens P. Anatomy of the pineal region applied to its surgical approach. Neurochirurgie 2014; 61:70-6. [PMID: 24856313 DOI: 10.1016/j.neuchi.2013.11.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 11/07/2013] [Accepted: 03/21/2014] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The pineal region is situated in the posterior part of the incisural space. This region includes the pineal body inside the quadrigeminal arachnoidal cistern. This article reviews the anatomic features of this region, with particular emphasis on those aspects of importance for surgical access to the pineal region. MATERIAL & METHODS Five cadaver heads fixed in 10% formalin and injected with colored latex were used for anatomic dissection (five other specimens were also prepared and dissected to illustrate the articles on surgical techniques and approaches presented elsewhere in this issue). RESULTS The pineal body is surrounded by several important structures such as: posterior part of the third ventricle, tectum, the complex of the great cerebral vein of Galen, pulvinar nuclei of the thalamus and splenium of corpus callosum. CONCLUSION The surgical approach of the pineal body, whatever the route or the technique used (microsurgical, endoscopic or stereotactic), creates a great challenge for the neurosurgeons due to its location in the deep part of the brain and its close relationships with complex surrounded vascular structures.
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Affiliation(s)
- E Simon
- Department of anatomy, faculté de médecine Lyon EST, université Claude-Bernard Lyon 1, 8, avenue Rockefeller, 69003 Lyon, France; Department of neurosurgery, hôpital P.-Wertheimer, hospices civils de Lyon, 69677 Lyon, France.
| | - A Afif
- Department of anatomy, faculté de médecine Lyon EST, université Claude-Bernard Lyon 1, 8, avenue Rockefeller, 69003 Lyon, France; Department of neurosurgery, hôpital P.-Wertheimer, hospices civils de Lyon, 69677 Lyon, France
| | - M M'Baye
- Department of anatomy, faculté de médecine Lyon EST, université Claude-Bernard Lyon 1, 8, avenue Rockefeller, 69003 Lyon, France; Department of neurosurgery, hôpital P.-Wertheimer, hospices civils de Lyon, 69677 Lyon, France
| | - P Mertens
- Department of anatomy, faculté de médecine Lyon EST, université Claude-Bernard Lyon 1, 8, avenue Rockefeller, 69003 Lyon, France; Department of neurosurgery, hôpital P.-Wertheimer, hospices civils de Lyon, 69677 Lyon, France
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Gross R, Delporte L, Arsenault L, Revol P, Lefevre M, Clevenot D, Boisson D, Mertens P, Rossetti Y, Luauté J. Does the rectus femoris nerve block improve knee recurvatum in adult stroke patients? A kinematic and electromyographic study. Gait Posture 2014; 39:761-6. [PMID: 24286615 DOI: 10.1016/j.gaitpost.2013.10.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 10/07/2013] [Accepted: 10/12/2013] [Indexed: 02/02/2023]
Abstract
Knee recurvatum (KR) during gait is common in hemiplegic patients. Quadriceps spasticity has been postulated as a cause of KR in this population. The aim of this study was to assess the role of rectus femoris spasticity in KR by using selective motor nerve blocks of the rectus femoris nerve in hemiparetic stroke patients. The data from six adult, post-stroke hemiplegic patients who underwent a rectus femoris nerve block for a stiff-knee gait were retrospectively analyzed. An extensive clinical and functional evaluation was performed and gait was assessed by motion analysis (kinematic, kinetic and electromyographic parameters) before and during the block realized using 2% lidocaine injected under a neurostimulation and ultrasonographic targeting procedure. The main outcome measures were the peak knee extension in stance and peak knee extensor moment obtained during gait analysis. No serious adverse effect of the nerve block was observed. The block allowed a reduction of rectus femoris overactivity in all patients. Peak knee extension and extensor moment in stance did not improve in any patient, but peak knee flexion during the swing phase was significantly higher after block (mean: 31.2° post, 26.4 pre, p < 0.05). Our results provide arguments against the hypothesis that the spasticity of the rectus femoris contributes to KR.
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Affiliation(s)
- R Gross
- Service de médecine physique et de réadaptation neurologique, centre hospitalier universitaire de Nantes, hôpital Saint Jacques, 85 rue Saint Jacques, 44093 Nantes cedex, France.
| | - L Delporte
- Pôle d'activité médicale de Rééducation et Réadaptation, Hôpital Henry Gabrielle, Plateforme Mouvement et Handicap, Hospices Civils de Lyon, F-69230 Lyon, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, INSERM U1028, ImpAct, 16 avenue Lépine, 69676 Bron, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, CNRS, UMR5292, ImpAct, 16 avenue Lépine, 69676 Bron, France; Université Lyon 1, F-69000 Lyon, France
| | - L Arsenault
- Pôle d'activité médicale de Rééducation et Réadaptation, Hôpital Henry Gabrielle, Plateforme Mouvement et Handicap, Hospices Civils de Lyon, F-69230 Lyon, France
| | - P Revol
- Pôle d'activité médicale de Rééducation et Réadaptation, Hôpital Henry Gabrielle, Plateforme Mouvement et Handicap, Hospices Civils de Lyon, F-69230 Lyon, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, INSERM U1028, ImpAct, 16 avenue Lépine, 69676 Bron, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, CNRS, UMR5292, ImpAct, 16 avenue Lépine, 69676 Bron, France; Université Lyon 1, F-69000 Lyon, France
| | - M Lefevre
- Service Anesthésie-Réanimations médicale et chirurgicale, Centre hospitalier Lyon Sud, Hospices Civils de Lyon, Chemin du Grand Revoyet, 69495 Pierre-Bénite, France
| | - D Clevenot
- Service Anesthésie-Réanimations médicale et chirurgicale, Centre hospitalier Lyon Sud, Hospices Civils de Lyon, Chemin du Grand Revoyet, 69495 Pierre-Bénite, France
| | - D Boisson
- Pôle d'activité médicale de Rééducation et Réadaptation, Hôpital Henry Gabrielle, Plateforme Mouvement et Handicap, Hospices Civils de Lyon, F-69230 Lyon, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, INSERM U1028, ImpAct, 16 avenue Lépine, 69676 Bron, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, CNRS, UMR5292, ImpAct, 16 avenue Lépine, 69676 Bron, France; Université Lyon 1, F-69000 Lyon, France
| | - P Mertens
- Université Lyon 1, F-69000 Lyon, France; Département de Neurochirurgie, hôpital neurologique Pierre Wertheimer, Hospices Civils de Lyon, Lyon, France
| | - Y Rossetti
- Pôle d'activité médicale de Rééducation et Réadaptation, Hôpital Henry Gabrielle, Plateforme Mouvement et Handicap, Hospices Civils de Lyon, F-69230 Lyon, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, INSERM U1028, ImpAct, 16 avenue Lépine, 69676 Bron, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, CNRS, UMR5292, ImpAct, 16 avenue Lépine, 69676 Bron, France; Université Lyon 1, F-69000 Lyon, France
| | - J Luauté
- Pôle d'activité médicale de Rééducation et Réadaptation, Hôpital Henry Gabrielle, Plateforme Mouvement et Handicap, Hospices Civils de Lyon, F-69230 Lyon, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, INSERM U1028, ImpAct, 16 avenue Lépine, 69676 Bron, France; Centre de Recherche en Neurosciences de Lyon, Lyon Neuroscience Research Center, CNRS, UMR5292, ImpAct, 16 avenue Lépine, 69676 Bron, France; Université Lyon 1, F-69000 Lyon, France
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Haase-Fielitz A, Westphal S, Bellomo R, Devarajan P, Westerman M, Mertens P, Haase M. Tubular damage biomarkers linked to inflammation or iron metabolism predict acute kidney injury. Crit Care 2013. [DOI: 10.1186/cc12352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Mertens P. Évaluation neurologique, prise en charge neurochirurgicale en phase chronique: spasticité. Rev Neurol (Paris) 2013. [DOI: 10.1016/j.neurol.2013.01.484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Schuepbach WMM, Rau J, Knudsen K, Volkmann J, Krack P, Timmermann L, Hälbig TD, Hesekamp H, Navarro SM, Meier N, Falk D, Mehdorn M, Paschen S, Maarouf M, Barbe MT, Fink GR, Kupsch A, Gruber D, Schneider GH, Seigneuret E, Kistner A, Chaynes P, Ory-Magne F, Brefel Courbon C, Vesper J, Schnitzler A, Wojtecki L, Houeto JL, Bataille B, Maltête D, Damier P, Raoul S, Sixel-Doering F, Hellwig D, Gharabaghi A, Krüger R, Pinsker MO, Amtage F, Régis JM, Witjas T, Thobois S, Mertens P, Kloss M, Hartmann A, Oertel WH, Post B, Speelman H, Agid Y, Schade-Brittinger C, Deuschl G. Neurostimulation for Parkinson's disease with early motor complications. N Engl J Med 2013; 368:610-22. [PMID: 23406026 DOI: 10.1056/nejmoa1205158] [Citation(s) in RCA: 851] [Impact Index Per Article: 77.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Subthalamic stimulation reduces motor disability and improves quality of life in patients with advanced Parkinson's disease who have severe levodopa-induced motor complications. We hypothesized that neurostimulation would be beneficial at an earlier stage of Parkinson's disease. METHODS In this 2-year trial, we randomly assigned 251 patients with Parkinson's disease and early motor complications (mean age, 52 years; mean duration of disease, 7.5 years) to undergo neurostimulation plus medical therapy or medical therapy alone. The primary end point was quality of life, as assessed with the use of the Parkinson's Disease Questionnaire (PDQ-39) summary index (with scores ranging from 0 to 100 and higher scores indicating worse function). Major secondary outcomes included parkinsonian motor disability, activities of daily living, levodopa-induced motor complications (as assessed with the use of the Unified Parkinson's Disease Rating Scale, parts III, II, and IV, respectively), and time with good mobility and no dyskinesia. RESULTS For the primary outcome of quality of life, the mean score for the neurostimulation group improved by 7.8 points, and that for the medical-therapy group worsened by 0.2 points (between-group difference in mean change from baseline to 2 years, 8.0 points; P=0.002). Neurostimulation was superior to medical therapy with respect to motor disability (P<0.001), activities of daily living (P<0.001), levodopa-induced motor complications (P<0.001), and time with good mobility and no dyskinesia (P=0.01). Serious adverse events occurred in 54.8% of the patients in the neurostimulation group and in 44.1% of those in the medical-therapy group. Serious adverse events related to surgical implantation or the neurostimulation device occurred in 17.7% of patients. An expert panel confirmed that medical therapy was consistent with practice guidelines for 96.8% of the patients in the neurostimulation group and for 94.5% of those in the medical-therapy group. CONCLUSIONS Subthalamic stimulation was superior to medical therapy in patients with Parkinson's disease and early motor complications. (Funded by the German Ministry of Research and others; EARLYSTIM ClinicalTrials.gov number, NCT00354133.).
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Affiliation(s)
- W M M Schuepbach
- Assistance Publique–Hôpitaux de Paris, Centre d'Investigation Clinique (CIC) 9503, Institut du Cerveau et de la Moelle Épinière, Département de Neurologie, Université Pierre et Marie Curie–Paris 6 and INSERM, Centre Hospitalier Universitaire (CHU) Pitié–Salpêtrière, Paris, France
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Hauptmann M, Struyf H, Mertens P, Heyns M, De Gendt S, Glorieux C, Brems S. Towards an understanding and control of cavitation activity in 1 MHz ultrasound fields. Ultrason Sonochem 2013; 20:77-88. [PMID: 22705075 DOI: 10.1016/j.ultsonch.2012.05.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 04/27/2012] [Accepted: 05/06/2012] [Indexed: 05/21/2023]
Abstract
Various industrial processes such as sonochemical processing and ultrasonic cleaning strongly rely on the phenomenon of acoustic cavitation. As the occurrence of acoustic cavitation is incorporating a multitude of interdependent effects, the amount of cavitation activity in a vessel is strongly depending on the ultrasonic process conditions. It is therefore crucial to quantify cavitation activity as a function of the process parameters. At 1 MHz, the active cavitation bubbles are so small that it is becoming difficult to observe them in a direct way. Hence, another metrology based on secondary effects of acoustic cavitation is more suitable to study cavitation activity. In this paper we present a detailed analysis of acoustic cavitation phenomena at 1 MHz ultrasound by means of time-resolved measurements of sonoluminescence, cavitation noise, and synchronized high-speed stroboscopic Schlieren imaging. It is shown that a correlation exists between sonoluminescence, and the ultraharmonic and broadband signals extracted from the cavitation noise spectra. The signals can be utilized to characterize different regimes of cavitation activity at different acoustic power densities. When cavitation activity sets on, the aforementioned signals correlate to fluctuations in the Schlieren contrast as well as the number of nucleated bubbles extracted from the Schlieren Images. This additionally proves that signals extracted from cavitation noise spectra truly represent a measure for cavitation activity. The cyclic behavior of cavitation activity is investigated and related to the evolution of the bubble populations in the ultrasonic tank. It is shown that cavitation activity is strongly linked to the occurrence of fast-moving bubbles. The origin of this "bubble streamers" is investigated and their role in the initialization and propagation of cavitation activity throughout the sonicated liquid is discussed. Finally, it is shown that bubble activity can be stabilized and enhanced by the use of pulsed ultrasound by conserving and recycling active bubbles between subsequent pulsing cycles.
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Affiliation(s)
- M Hauptmann
- IMEC vzw, Kapeldreef 75, B-3001 Leuven, Belgium.
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Hauptmann M, Frederickx F, Struyf H, Mertens P, Heyns M, De Gendt S, Glorieux C, Brems S. Enhancement of cavitation activity and particle removal with pulsed high frequency ultrasound and supersaturation. Ultrason Sonochem 2013; 20:69-76. [PMID: 22682476 DOI: 10.1016/j.ultsonch.2012.04.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 04/27/2012] [Accepted: 04/28/2012] [Indexed: 05/21/2023]
Abstract
Megasonic cleaning as applied in leading edge semiconductor device manufacturing strongly relies on the phenomenon of acoustic cavitation. As the occurrence of acoustic cavitation is incorporating a multitude of interdependent effects, the amount of cavitation activity in the cleaning liquid strongly depends on the sonication conditions. It is shown that cavitation activity as measured by means of ultraharmonic cavitation noise can be significantly enhanced when pulsed sonication is applied to a gas supersaturated liquid under traveling wave conditions. It is demonstrated that this enhancement coincides with a dramatic increase in particle removal and is therefore of great interest for megasonic cleaning applications. It is demonstrated that the optimal pulse parameters are determined by the dissolution time of the active bubbles, whereas the amount of cavitation activity depends on the ratio between pulse-off and pulse-on time as well as the applied acoustic power. The optimal pulse-off time is independent of the corresponding pulse-on time but increases significantly with increasing gas concentration. We show that on the other hand, supersaturation is needed to enable acoustic cavitation at aforementioned conditions, but has to be kept below values, for which active bubbles cannot dissolve anymore and are therefore lost during subsequent pulses. For the applicable range of gas contents between 100% and 130% saturation, the optimal pulse-off time reaches values between 150 and 340 ms, respectively. Full particle removal of 78 nm-diameter silica particles at a power density of 0.67 W/cm(2) is obtained for the optimal pulse-off times. The optimal pulse-off time values are derived from the dissolution time of bubbles with a radius of 3.3 μm and verified experimentally. The bubble radius used in the calculations corresponds to the linear resonance size in a 928 kHz sound field, which demonstrates that the recycling of active bubbles is the main enhancement mechanism. The optimal choice of the pulsing conditions however is constrained by the trade-off between the effective sonication time and the desire to have a sufficient amount of active bubbles at lower powers, which might be necessary if very delicate structures have to be cleaned.
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Affiliation(s)
- M Hauptmann
- Imec vzw, Kapeldreef 75, B-3001 Leuven, Belgium.
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Sindou M, Batailler C, Brinzeu A, Simon E, Mertens P. Le rôle de l’« effet de chevalet » de l’arête pétreuse sur la racine trigéminale dans la genèse des névralgies trigéminales primaires. Vidéo d’un cas illustratif (3′30). Neurochirurgie 2012. [DOI: 10.1016/j.neuchi.2012.10.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Maarrawi J, Peyron R, Mertens P, Costes N, Magnin M, Sindou M, Laurent B, Garcia-Larrea L. Sélection des meilleurs candidats à la stimulation du cortex moteur à visée antalgique : étude des récepteurs opioïdes par TEP. Neurochirurgie 2012. [DOI: 10.1016/j.neuchi.2012.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Steinbach J, Mertens P, Bartsch P. [Surgery meets nephrology: surgical indications for kidneys with renal artery occlusion: an interdisciplinary challenge]. Zentralbl Chir 2012; 137:500-2. [PMID: 23136108 DOI: 10.1055/s-0032-1315188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- J Steinbach
- Klinik für Nieren- und Hochdruckkrankheiten, Diabetologie und Endokrinologie, Universitätsklinikum Magdeburg A. ö. R., Magdeburg, Deutschland
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Totzeck M, Hendgen-Cotta U, Rammos C, Petrescu A, Stock P, Goedecke A, Shiva S, Kelm M, Rassaf T, Duerr GD, Heuft T, Klaas T, Suchan G, Roell W, Zimmer A, Welz A, Fleischmann BK, Dewald O, Luedde M, Carter N, Lutz M, Sosna J, Jacoby C, Floegel U, Hippe HJ, Adam D, Heikenwaelder M, Frey N, Sobierajski J, Luedicke P, Hendgen-Cotta U, Lue H, Totzeck M, Dewor M, Kelm M, Bernhagen J, Rassaf T, Cortez-Dias N, Costa M, Carrilho-Ferreira P, Silva D, Jorge C, Robalo Martins S, Fiuza M, Pinto FJ, Nunes Diogo A, Enguita FJ, Tsiachris D, Tsioufis C, Kasiakogias A, Flessas D, Antonakis V, Kintis K, Giakoumis M, Hatzigiannis P, Katsimichas T, Stefanadis C, Andrikou E, Tsioufis C, Thomopoulos C, Kasiakogias A, Tzamou V, Andrikou I, Bafakis I, Lioni L, Kintis K, Stefanadis C, Lazaros G, Tsiachris D, Tsioufis C, Vlachopoulos C, Brili S, Chrysohoou C, Tousoulis D, Stefanadis C, Santos De Sousa CI, Pires S, Nunes A, Cortez Dias N, Belo A, Cabrita I, Pinto FJ, Benova T, Radosinska J, Viczenczova C, Bacova B, Knezl V, Dosenko V, Navarova J, Zeman M, Tribulova N, Maceira Gonzalez AM, Cosin Sales J, Igual B, Ruvira J, Diago JL, Aguilar J, Lopez Lereu MP, Monmeneu JV, Estornell J, Choi JC, Cha KS, Lee HW, Yun EY, Ahn JH, Oh JH, Choi JH, Lee HC, Hong TJ, Manzano Fernandez S, Lopez-Cuenca A, Januzzi JL, Mateo-Martinez A, Sanchez-Martinez M, Parra-Pallares S, Orenes-Pinero E, Romero-Aniorte AI, Valdes-Chavarri M, Marin F, Bouzas Mosquera A, Peteiro J, Broullon FJ, Alvarez Garcia N, Couto Mallon D, Bouzas Zubeldia B, Martinez Ruiz D, Yanez Wonenburger JC, Fabregas Casal R, Castro Beiras A, Backus BE, Six AJ, Cullen L, Greenslade J, Than M, Kameyama T, Sato T, Noto T, Nakadate T, Ueno H, Yamada K, Inoue H, Albrecht-Kuepper B, Kretschmer A, Kast R, Baerfacker L, Schaefer S, Kolkhof P, Andersson C, Kober L, Christensen SB, Nguyen CD, Nielsen MB, Olsen AMS, Gislason GH, Torp-Pedersen C, Shigekiyo M, Harada K, Lieu H, Neutel J, Maddock S, Goldsmith S, Koren M, Antwerp BV, Burnett J, Christensen SB, Charlot MG, Madsen M, Andersson C, Kober L, Gustafsson F, Torp-Pedersen C, Gislason GH, Cavusoglu Y, Mert KU, Nadir A, Mutlu F, Gencer E, Ulus T, Birdane A, Lim HS, Tahk SJ, Yang HM, Kim JW, Seo KW, Choi BJ, Choi SY, Yoon MH, Hwang GS, Shin JH, Russ MA, Wackerl C, Hochadel M, Brachmann J, Mudra H, Zeymer U, Weber MA, Menozzi A, Saia F, Valgimigli M, Belotti LM, Casella G, Manari A, Cremonesi A, Piovaccari G, Guastaroba P, Marzocchi A, Kuramitsu S, Iwabuchi M, Haraguchi T, Domei T, Nagae A, Hyodo M, Takabatake Y, Yokoi H, Toyota F, Nobuyoshi M, Kaitani K, Hanazawa K, Izumi C, Nakagawa Y, Ando K, Arita T, Nobuyoshi M, Shizuta S, Kimura T, Isshiuki T, Trucco ME, Tolosana JM, Castel MA, Borras R, Sitges M, Khatib M, Arbelo E, Berruezo A, Brugada J, Mont L, Romanov A, Pokushalov E, Prokhorova D, Chernyavskiy A, Shabanov V, Goscinska-Bis K, Bis J, Bochenek A, Gersak B, Karaskov A, Linde C, Daubert C, Bergemann TL, Abraham WT, Gold MR, Van Boven N, Bogaard K, Ruiter JH, Kimman GP, Kardys I, Umans VA, Cipriani M, Lunati M, Landolina M, Vittori C, Vargiu S, Ghio S, Petracci B, Campo C, Bisetti S, Frigerio M, Bongiorni MG, Soldati E, Segreti L, Zucchelli G, Di Cori A, De Lucia R, Viani S, Paperini L, Boem A, Levorato D, Kutarski A, Malecka B, Zabek A, Czajkowski M, Chudzik M, Kutarski A, Mitkowski P, Maciag A, Kempa M, Golzio PG, Fanelli A, Vinci M, Pelissero E, Morello M, Grosso Marra W, Gaita F, Kutarski A, Czajkowski M, Pietura R, Golzio PG, Vinci M, Pelissero E, Fanelli A, Ferraris F, Gaita F, Cuypers JAAE, Menting ME, Opic P, Utens EMWJ, Van Domburg RT, Helbing WA, Witsenburg M, Van Den Bosch AE, Bogers AJJC, Roos-Hesselink JW, Van Der Linde D, Takkenberg JJM, Rizopoulos D, Heuvelman HJ, Witsenburg M, Budts W, Van Dijk APJ, Bogers AJJC, Oechslin EN, Roos-Hesselink JW, Diller GP, Kempny A, Liodakis E, Alonso-Gonzalez R, Orwat S, Dimopoulos K, Swan L, Li W, Gatzoulis MA, Baumgartner H, Andrade AC, Voges I, Jerosch-Herold M, Pham M, Hart C, Hansen T, Kramer HH, Rickers C, Kempny A, Wustmann K, Borgia F, Dimopoulos K, Uebing A, Piorkowski A, Yacoub MH, Gatzoulis MA, Swan L, Diller GP, Mueller J, Weber R, Pringsheim M, Hoerer J, Hess J, Hager A, Hu K, Liu D, Niemann M, Herrmann S, Cikes M, Stoerk S, Knob S, Ertl G, Bijnens B, Weidemann F, Mornos C, Cozma D, Dragulescu D, Ionac A, Mornos A, Petrescu L, Mingo S, Ruiz Bautista L, Monivas Palomero V, Prados C, Maiz L, Giron R, Martinez M, Cavero Gibanel MA, Segovia J, Pulpon L, Kato H, Kubota S, Takasawa Y, Kumamoto T, Iacoviello M, Puzzovivo A, Forleo C, Lattarulo MS, Monitillo F, Antoncecchi V, Malerba G, Marangelli V, Favale S, Ruiz Bautista L, Mingo S, Monivas V, Segovia J, Prados C, Maiz L, Giron R, Martinez MT, Gonzalez Estecha M, Alonso Pulpon LA, Ren B, De Groot-De Laat L, Mcghie J, Vletter W, Ten Cate F, Geleijnse M, Looi JL, Lam YY, Yu CM, Lee PW, Apor A, Sax B, Huttl T, Nagy A, Kovacs A, Merkely B, Vecera J, Bartunek J, Vanderheyden M, Mertens P, Bodea O, Penicka M, Biaggi P, Gaemperli O, Corti R, Gruenenfelder J, Felix C, Bettex D, Datta S, Jenni R, Tanner F, Herzog B, Fattouch K, Murana G, Castrovinci S, Sampognaro R, Bertolino EC, Caccamo G, Ruvolo G, Speziale G, Lancellotti P. Saturday, 25 August 2012. Eur Heart J 2012. [DOI: 10.1093/eurheartj/ehs280] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Latorzeff I, Debono B, Sol JC, Ménégalli D, Mertens P, Redon A, Muracciole X. Traitement de la névralgie essentielle du trijumeau par radiochirurgie stéréotaxique. Cancer Radiother 2012; 16 Suppl:S57-69. [DOI: 10.1016/j.canrad.2012.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Accepted: 01/23/2012] [Indexed: 10/28/2022]
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Sindou M, Keravel Y, Simon E, Mertens P. Nevralgia del trigemino e neurochirurgia. Neurologia 2012. [DOI: 10.1016/s1634-7072(12)62056-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Hauptmann M, Brems S, Struyf H, Mertens P, Heyns M, De Gendt S, Glorieux C. Time-resolved monitoring of cavitation activity in megasonic cleaning systems. Rev Sci Instrum 2012; 83:034904. [PMID: 22462949 DOI: 10.1063/1.3697710] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The occurrence of acoustic cavitation in the cleaning liquid is a crucial precondition for the performance of megasonic cleaning systems. Hence, a fundamental understanding of the impact of different parameters of the megasonic process on cavitation activity is necessary. A setup capable of synchronously measuring sonoluminescence and acoustic emission originating from acoustically active bubbles is presented. The system also includes a high-speed-stroboscopic Schlieren imaging system to directly visualize the influence of cavitation activity on the Schlieren contrast and resolvable bubbles. This allows a thorough characterization of the mutual interaction of cavitation bubbles with the sound field and with each other. Results obtained during continuous sonication of argon-saturated water at various nominal power densities indicate that acoustic cavitation occurs in a cyclic manner, during which periods of stable and inertial cavitation activity alternate. The occurrence of higher and ultraharmonics in the acoustic emission spectra is characteristic for the stable cavitation state. The inertial cavitation state is characterized by a strong attenuation of the sound field, the explosive growth of bubbles and the occurrence of broadband components in the acoustic spectra. Both states can only be sustained at sufficiently high intensities of the sound field. At lower intensities, their occurrences are limited to short, random bursts. Cleaning activity can be linked to the cavitation activity through the measurement of particle removal on standard 200 mm silicon wafers. It is found that the particle removal efficiency is reduced, when a continuous state of cavitation activity ceases to exist.
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Affiliation(s)
- M Hauptmann
- IMEC vzw, Kapeldreef 75, B-3001 Leuven, Belgium.
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Haase M, Mertens P, Plaß M, Bellomo R, Haase-Fielitz A. Neutrophil gelatinase-associated lipocalin predicts postoperative fluid overload, a potentially modifiable risk factor for mortality after cardiac surgery. Crit Care 2012. [PMCID: PMC3363768 DOI: 10.1186/cc10957] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Haase-Fieiltz A, Mertens P, Plaß M, Westerman M, Bellomo R, Haase M. Low preoperative hepcidin concentration is a risk factor for mortality but not for acute kidney injury after cardiac surgery. Crit Care 2012. [PMCID: PMC3363820 DOI: 10.1186/cc11009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Maarrawi J, Mertens P, Peyron R, Costes N, Sindou M, Laurent B, Garcia-Larrea L. 462 MOTOR CORTEX STIMULATION FOR PAIN CONTROL INDUCES METABOLIC CHANGES IN THE ENDOGENOUS OPIOID SYSTEM. Eur J Pain 2012. [DOI: 10.1016/s1090-3801(06)60465-5] [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: 10/23/2022]
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Mottolese C, Beuriat PA, Szathmari A, Ricci-Franchi AC, Ene B, Simon E, Bourdillon P, Mertens P. Étude endoscopique de la vascularisation du plancher du troisième ventricule. Neurochirurgie 2011. [DOI: 10.1016/j.neuchi.2011.09.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Brinzeu A, Sindou M, Mertens P. Décompression vasculaire microchirurgicale pour névralgie vago-glosso-pharyngienne associé à un syndrome de dis-régulation végétative. Neurochirurgie 2011. [DOI: 10.1016/j.neuchi.2011.09.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Sugawara M, Ichimura S, Kokubo K, Shimbo T, Hirose M, Kobayashi H, Hribova P, Brabcova I, Honsova E, Viklicky O, Kute VB, Shah PR, Vanikar AV, Gumber MR, Patel HV, Modi PR, Trivedi HL, Trivedi VB, Nusrath S, Minz M, Walker Minz R, Sharma A, Singh S, Jha V, Joshi K, Richter R, Kohler S, Qidan S, Scheuermann E, Kachel HG, Gossmann J, Gauer S, Seifried E, Geiger H, Seidl C, Hauser IA, Hanssen L, Frye B, Ostendorf T, Alidousty C, Djudjaj S, Boor P, Rauen T, Floege J, Mertens P, Raffetseder U, Garcia-Cenador B, Lopez-Novoa JM, Iniguez M, Fernandez V, Perez de Obanos P, Ruiz J, Sanz-Gimenez JR, Lopez-Marcos JF, Garcia-Criado J, Van Craenenbroeck AH, Anguille SH, Jurgens A, Cools N, Van Camp K, Stein B, Nijs G, Berneman Z, Ieven M, Van Damme P, Van Tendeloo V, Verpooten GA, Gohel K, Hegde U, Gang S, Rajapurkar M, Erdogmus S, Sengul S, Kocak S, Kurultak I, Kutlay S, Keven K, Erbay B, Erturk S, Kimura S, Imura J, Atsumi H, Fujimoto K, Chikazawa Y, Nakagawa M, Hayama T, Okuyama H, Yamaya H, Yokoyama H, Libetta C, Canevari M, Sepe V, Margiotta E, Meloni F, Martinelli C, Borettaz I, Esposito P, Portalupi V, Morosini M, Solari N, Dal Canton A, Rusai K, Schmaderer C, Hermans R, Lutz J, Heemann U, Baumann M, Cantaluppi V, Tamagnone M, Dellepiane S, Medica D, Dolla C, Messina M, Manzione AM, Tognarelli G, Ranghino A, Biancone L, Camussi G, Segoloni GP, Ozkurt S, Sahin G, Degirmenci N, Temiz G, Musmul A, Birdane A, Tek M, Tekin N, Akyuz F, Yalcin AU, Garcia-Cenador B, Lopez-Novoa JM, Iniguez M, Fernandez V, Perez de Obanos P, Ruiz J, Lopez-Valverde A, Garcia-Criado J. Transplantation: basic science and immune-tolerance. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.42] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Verhaverbeke S, Alay J, Mertens P, Meuris M, Heyns M, Vandervorst W, Murrell M, Sofield C. Surface Characterisation of Si After HF Treatments and its Influence on the Dielectric Breakdown of Thermal Oxides. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-259-391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTThe characteristics of the HF-treated Si-surface are investigated as a function of dipping time in dilute HF solutions. It is found that the contact angle is a very sensitive measure for the degree of oxidation of the Si-surface. The importance of obtaining a perfectly passivated surface in order to reduce the particle deposition on the surface is shown. HF-last cleans are found to be beneficial in terms of metallic contamination and gate oxide integrity. The importance of the loading ambient in furnaces is investigated after HF-treatments and RCA-cleans.
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Abstract
Neuropathic pain (NP) may become refractory to conservative medical management, necessitating neurosurgical procedures in carefully selected cases. In this context, the functional neurosurgeon must have suitable knowledge of the disease he or she intends to treat, especially its pathophysiology. This latter factor has been studied thanks to advances in the functional exploration of NP, which will be detailed in this review. The study of the flexion reflex is a useful tool for clinical and pharmacological pain assessment and for exploring the mechanisms of pain at multiple levels. The main use of evoked potentials is to confirm clinical, or detect subclinical, dysfunction in peripheral and central somato-sensory pain pathways. LEP and SEP techniques are especially useful when used in combination, allowing the exploration of both pain and somato-sensory pathways. PET scans and fMRI documented rCBF increases to noxious stimuli. In patients with chronic NP, a decreased resting rCBF is observed in the contralateral thalamus, which may be reversed using analgesic procedures. Abnormal pain evoked by innocuous stimuli (allodynia) has been associated with amplification of the thalamic, insular and SII responses, concomitant to a paradoxical CBF decrease in ACC. Multiple PET studies showed that endogenous opioid secretion is very likely to occur as a reaction to pain. In addition, brain opioid receptors (OR) remain relatively untouched in peripheral NP, while a loss of ORs is most likely to occur in central NP, within the medial nociceptive pathways. PET receptor studies have also proved that antalgic Motor Cortex Stimulation (MCS), indicated in severe refractory NP, induces endogenous opioid secretion in key areas of the endogenous opioid system, which may explain one of the mechanisms of action of this procedure, since the secretion is proportional to the analgesic effect.
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Affiliation(s)
- J Maarrawi
- (Faculty of Medicine) and Hôtel-Dieu de France Hospital (Department of Neurosurgery), St Joseph University, Beirut, Lebanon
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Cêtre-Sossah C, Madani H, Sailleau C, Nomikou K, Sadaoui H, Zientara S, Maan S, Maan N, Mertens P, Albina E. Molecular epidemiology of bluetongue virus serotype 1 isolated in 2006 from Algeria. Res Vet Sci 2010; 91:486-97. [PMID: 21074232 DOI: 10.1016/j.rvsc.2010.10.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2010] [Revised: 07/11/2010] [Accepted: 10/05/2010] [Indexed: 11/26/2022]
Abstract
This study reports on an outbreak of disease that occurred in central Algeria during July 2006. Sheep in the affected area presented clinical signs typical of bluetongue (BT) disease. A total of 5245 sheep in the affected region were considered to be susceptible, with 263 cases and thirty-six deaths. Bluetongue virus (BTV) serotype 1 was isolated and identified as the causative agent. Segments 2, 7 and 10 of this virus were sequenced and compared with other isolates from Morocco, Italy, Portugal and France showing that they all belong to a 'western' BTV group/topotype and collectively represent a western Mediterranean lineage of BTV-1.
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Affiliation(s)
- C Cêtre-Sossah
- CIRAD, UMR Contrôle des Maladies, F-34398 Montpellier, France.
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Fontaine D, Lanteri-Minet M, Ouchchane L, Lazorthes Y, Mertens P, Blond S, Geraud G, Fabre N, Navez M, Lucas C, Dubois F, Sol JC, Paquis P, Lemaire JJ. Anatomical location of effective deep brain stimulation electrodes in chronic cluster headache. Brain 2010; 133:1214-23. [DOI: 10.1093/brain/awq041] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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De Clercq K, Mertens P, De Leeuw I, Oura C, Houdart P, Potgieter AC, Maan S, Hooyberghs J, Batten C, Vandemeulebroucke E, Wright IM, Maan N, Riocreux F, Sanders A, Vanderstede Y, Nomikou K, Raemaekers M, Bin-Tarif A, Shaw A, Henstock M, Bréard E, Dubois E, Gastaldi-Thiéry C, Zientara S, Verheyden B, Vandenbussche F. Emergence of bluetongue serotypes in Europe, part 2: the occurrence of a BTV-11 strain in Belgium. Transbound Emerg Dis 2010; 56:355-61. [PMID: 19909474 DOI: 10.1111/j.1865-1682.2009.01092.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
An EDTA-blood sample from a cow without clinical signs, which gave early birth to a newborn calf that died soon after delivery, was shown to be positive for bluetongue virus (BTV)-RNA using a group-specific real-time RT-PCR (RT-qPCR). In-house serotype-specific RT-qPCR assays for bluetongue virus serotype 1 (BTV-1), -6 and -8 all gave negative results. Subsequent assays were carried out using conventional (gel-based) RT-PCR primers for all 25 BTV serotypes and only two primer sets, both specific for BTV-11, gave bands of the expected size. The cDNAs generated were sequenced and comparisons of the genome segment 2 sequence with that of the modified 'live' vaccine strain of BTV-11 from South Africa showed 100% identity. A survey of all ruminants in a 1-km area around the first positive farm using a BTV-11 serotype-specific RT-qPCR revealed five other holdings with in total nine BTV-11 positive animals. A cross-sectional monitoring of dairy cattle in Belgium showed an overall prevalence of 3.8% on herd level and 0.2% on animal level. A BTV-11 has been introduced into the Belgian cattle herd during the 2008 vector season. The source of the infection and the way by which the virus was introduced are unknown.
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Affiliation(s)
- K De Clercq
- Section Development of Diagnostic Tools for Epizootic Diseases, Department of Virology, Veterinary and Agrochemical Research Centre, Ukkel, Belgium.
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48
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Ibrahim I, Maarrawi J, Jouanneau E, Guenot M, Mertens P, Sindou M. Évacuation des hématomes sous-duraux chroniques par la technique du twist-drill. Résultats d’une étude randomisée prospective entre un drainage de 48heures et un drainage de 96heures. Neurochirurgie 2010; 56:23-7. [DOI: 10.1016/j.neuchi.2009.11.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Accepted: 10/14/2009] [Indexed: 11/24/2022]
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49
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Xie J, Adamec D, Mertens P, Polo G, Broussolle E, Thobois S. P2.060 Comparison of efflcacy and side effects observed using peroperative and postoperative STN macrostimulation in Parkinson's disease: does both testing match? Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70411-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Simon E, Mertens P, Sindou M. Neurotomie sélective de la branche profonde du nerf ulnaire au poignet. Technique microchirurgicale pour le traitement de la spasticité du pouce en adduction–flexion dans la paume. Vidéo présentation. Neurochirurgie 2009. [DOI: 10.1016/j.neuchi.2009.08.135] [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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