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Beaud V, Crottaz-Herbette S, Dunet V, Knebel JF, Bart PA, Clarke S. Outcome of severe COVID-19: spotlight on fatigue, fatigability, multidomain complaints and pattern of cognitive deficits in a case series without prior brain dysfunction and without COVID-19-related stroke and/or cardiac arrest. J Med Case Rep 2024; 18:64. [PMID: 38303088 PMCID: PMC10835993 DOI: 10.1186/s13256-023-04300-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/02/2023] [Indexed: 02/03/2024] Open
Abstract
BACKGROUND Population-wide surveys and large-scale investigations highlighted the presence of cognitive deficits in the acute and postacute stages of severe COVID-19; a few studies documented their occurrence in cases without prior or COVID-19-related brain damage. The evolution of cognitive deficits in the latter population and their relationship to the post-COVID-19 fatigue syndrome are poorly understood. CASE PRESENTATION We report the outcome at 12 months after severe COVID-19 involving an intensive care unit stay and mechanical ventilation in six (five Caucasian and one Asian) patients (age range: 53-71 years, mean age 61.7 ± 6.5 years) without history of prior brain dysfunction and without stroke and/or cardiac arrest during or after COVID-19. All patients reported pervading mental and physical fatigue as well as numerous multidomain complaints, which impacted everyday life. Individual patients described mental fatigability, apathy, and/or anxiety. Standardized neuropsychological tests revealed isolated symptoms of cognitive dysfunction or performance at the lower limit of the norm in the attentional, executive, and/or working memory domains in four of the six patients. Somatic scales documented dyspnoea, muscle weakness, olfactory disorder, and/or minor sleep problems in some, but not all, patients. CONCLUSION Fatigue, fatigability, multidomain complaints, cognitive difficulties, or dysfunction, as well as isolated neurobehavioral and/or psychiatric and/or somatic symptoms, tend to occur in the aftermath of severe COVID-19 and persist at 12 months, even in the absence of prior and/or COVID-19-related brain damage. This clinical situation, which impacts everyday life, calls for a detailed investigation of patients' complaints, its neural underpinning, and an elaboration of specific rehabilitation programs.
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Affiliation(s)
- Valérie Beaud
- Service of Neuropsychology and Neurorehabilitation, Lausanne University Hospital and University of Lausanne, Av. Pierre-Decker 5, 1011, Lausanne, Switzerland.
| | - Sonia Crottaz-Herbette
- Service of Neuropsychology and Neurorehabilitation, Lausanne University Hospital and University of Lausanne, Av. Pierre-Decker 5, 1011, Lausanne, Switzerland
| | - Vincent Dunet
- Service of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, 1011, Lausanne, Switzerland
| | - Jean-François Knebel
- Service of Neuropsychology and Neurorehabilitation, Lausanne University Hospital and University of Lausanne, Av. Pierre-Decker 5, 1011, Lausanne, Switzerland
| | - Pierre-Alexandre Bart
- Service of Internal Medicine, Lausanne University Hospital and University of Lausanne, 1011, Lausanne, Switzerland
| | - Stephanie Clarke
- Service of Neuropsychology and Neurorehabilitation, Lausanne University Hospital and University of Lausanne, Av. Pierre-Decker 5, 1011, Lausanne, Switzerland
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Girardet R, Knebel JF, Dromain C, Vietti Violi N, Tsoumakidou G, Villard N, Denys A, Halkic N, Demartines N, Kobayashi K, Digklia A, Schaefer N, Prior JO, Boughdad S, Duran R. Anatomical Quantitative Volumetric Evaluation of Liver Segments in Hepatocellular Carcinoma Patients Treated with Selective Internal Radiation Therapy: Key Parameters Influencing Untreated Liver Hypertrophy. Cancers (Basel) 2024; 16:586. [PMID: 38339337 PMCID: PMC10854872 DOI: 10.3390/cancers16030586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 12/12/2023] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
Background: Factors affecting morphological changes in the liver following selective internal radiation therapy (SIRT) are unclear, and the available literature focuses on non-anatomical volumetric assessment techniques in a lobar treatment setting. This study aimed to investigate quantitative changes in the liver post-SIRT using an anatomical volumetric approach in hepatocellular carcinoma (HCC) patients with different levels of treatment selectivity and evaluate the parameters affecting those changes. This retrospective, single-institution, IRB-approved study included 88 HCC patients. Whole liver, liver segments, tumor burden, and spleen volumes were quantified on MRI at baseline and 3/6/12 months post-SIRT using a segmentation-based 3D software relying on liver vascular anatomy. Treatment characteristics, longitudinal clinical/laboratory, and imaging data were analyzed. The Student's t-test and Wilcoxon test evaluated volumetric parameters evolution. Spearman correlation was used to assess the association between variables. Uni/multivariate analyses investigated factors influencing untreated liver volume (uLV) increase. Results: Most patients were cirrhotic (92%) men (86%) with Child-Pugh A (84%). Absolute and relative uLV kept increasing at 3/6/12 months post-SIRT vs. baseline (all, p ≤ 0.005) and was maximal during the first 6 months. Absolute uLV increase was greater in Child-Pugh A5/A6 vs. ≥B7 at 3 months (A5, p = 0.004; A6, p = 0.007) and 6 months (A5, p = 0.072; A6, p = 0.031) vs. baseline. When the Child-Pugh class worsened at 3 or 6 months post-SIRT, uLV did not change significantly, whereas it increased at 3/6/12 months vs. baseline (all p ≤ 0.015) when liver function remained stable. The Child-Pugh score was inversely correlated with absolute and relative uLV increase at 3 months (rho = -0.21, p = 0.047; rho = -0.229, p = 0.048). In multivariate analysis, uLV increase was influenced at 3 months by younger age (p = 0.013), administered 90Y activity (p = 0.003), and baseline spleen volume (p = 0.023). At 6 months, uLV increase was impacted by younger age (p = 0.006), whereas treatment with glass microspheres (vs. resin) demonstrated a clear trend towards better hypertrophy (f = 3.833, p = 0.058). The amount (percentage) of treated liver strongly impacted the relative uLV increase at 3/6/12 months (all f ≥ 8.407, p ≤ 0.01). Conclusion: Liver function (preserved baseline and stable post-SIRT) favored uLV hypertrophy. Younger patients, smaller baseline spleen volume, higher administered 90Y activity, and a larger amount of treated liver were associated with a higher degree of untreated liver hypertrophy. These factors should be considered in surgical candidates undergoing neoadjuvant SIRT.
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Affiliation(s)
- Raphaël Girardet
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
| | - Jean-François Knebel
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
| | - Clarisse Dromain
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
| | - Naik Vietti Violi
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
| | - Georgia Tsoumakidou
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
| | - Nicolas Villard
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
| | - Alban Denys
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
| | - Nermin Halkic
- Department of Visceral Surgery, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (N.H.); (N.D.); (K.K.)
| | - Nicolas Demartines
- Department of Visceral Surgery, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (N.H.); (N.D.); (K.K.)
| | - Kosuke Kobayashi
- Department of Visceral Surgery, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (N.H.); (N.D.); (K.K.)
- Division of Hepatobiliary and Pancreatic Surgery, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Antonia Digklia
- Department of Medical Oncology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland;
| | - Niklaus Schaefer
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (N.S.); (J.O.P.); (S.B.)
| | - John O. Prior
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (N.S.); (J.O.P.); (S.B.)
| | - Sarah Boughdad
- Department of Nuclear Medicine and Molecular Imaging, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (N.S.); (J.O.P.); (S.B.)
| | - Rafael Duran
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and Lausanne University, 1011 Lausanne, Switzerland; (R.G.); (J.-F.K.); (C.D.); (N.V.V.); (G.T.); (N.V.); (A.D.)
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Marot A, Henrion J, Knebel JF, Trépo E, Moreno C, Deltenre P. A model for individualized prediction of liver-related death in outpatients with alcohol-associated cirrhosis. Hepatol Commun 2023; 7:e0229. [PMID: 37655969 PMCID: PMC10476762 DOI: 10.1097/hc9.0000000000000229] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 06/15/2023] [Indexed: 09/02/2023] Open
Abstract
INTRODUCTION In alcohol-associated cirrhosis, an accurate estimate of the risk of death is essential for patient care. We developed individualized prediction charts for 5-year liver-related mortality among outpatients with alcohol-associated cirrhosis that take into account the impact of abstinence. METHODS We collected data on outpatients with alcohol-associated cirrhosis in a prospective registry. The model was derived, internally and externally validated, and compared with the Child-Pugh and the Model For End-Stage Liver Disease (MELD) scores. RESULTS A total of 527 and 127 patients were included in the derivation and validation data sets, respectively. A model was developed based on the 3 variables independently associated with liver-related mortality in multivariate analyses (age, Child-Pugh score, and abstinence). In the derivation data set, the model combining age, Child-Pugh score, and abstinence outperformed the Child-Pugh and the MELD scores. In the validation data set, the Brier score was lower for the model (0.166) compared with the Child-Pugh score (0.196, p = 0.008) and numerically lower compared with the MELD score (0.190) (p = 0.06). The model had the greatest AUC (0.77; 95% CI 0.68-0.85) compared with the Child-Pugh score (AUC = 0.66; 95% CI 0.56-0.76, p = 0.01) and was numerically higher than that of the MELD score (AUC = 0.66; 95% CI 0.56-0.78, p = 0.06). Also, the Akaike and Bayesian information criterion scores were lower for the model (2163; 2172) compared with the Child-Pugh (2213; 2216) or the MELD score (2205; 2208). CONCLUSION A model combining age, Child-Pugh score, and abstinence accurately predicts liver-related death at 5 years among outpatients with alcohol-associated cirrhosis. In this study, the model outperformed the Child-Pugh and the MELD scores, although the AUC and the Brier score of the model were not statically different from the MELD score in the validation data set.
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Affiliation(s)
- Astrid Marot
- Department of Gastroenterology and Hepatology, CHU UCL Namur, Université Catholique de Louvain, Yvoir, Belgium
| | - Jean Henrion
- Department of Gastroenterology and Hepatology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - Jean-François Knebel
- Division of Radiology, Centre d’Imagerie Biomédicale (CIBM), Hôpital Nestlé, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Eric Trépo
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
- Laboratory of Experimental Gastroenterology, Université Libre de Bruxelles, Brussels, Belgium
| | - Christophe Moreno
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
- Laboratory of Experimental Gastroenterology, Université Libre de Bruxelles, Brussels, Belgium
| | - Pierre Deltenre
- Department of Gastroenterology and Hepatology, CHU UCL Namur, Université Catholique de Louvain, Yvoir, Belgium
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
- Department of Gastroenterology and Hepatology, Clinique St Luc, Bouge, Belgium
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Wosik J, Ellis RJ, Perea R, Sharma N, Knebel JF, Schoettker P. BINARY HYPERTENSION CLASSIFICATION USING CALIBRATION-FREE OPTICALBLOOD PRESSURE MEASUREMENT TECHNIQUE AT HOME. J Am Coll Cardiol 2023. [DOI: 10.1016/s0735-1097(23)02709-2] [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: 03/06/2023]
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Topolsky A, Pantet O, Liaudet L, Sempoux C, Denys A, Knebel JF, Schmidt S. MDCT-findings in patients with non-occlusive mesenteric ischemia (NOMI): influence of vasoconstrictor agents. Eur Radiol 2023; 33:3627-3637. [PMID: 36692594 PMCID: PMC10121529 DOI: 10.1007/s00330-023-09415-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/26/2022] [Revised: 11/02/2022] [Accepted: 01/01/2023] [Indexed: 01/25/2023]
Abstract
OBJECTIVES To evaluate the influence of vasoconstrictor agents (VCAs) on signs of vasoconstriction and bowel ischemia on MDCT detected in patients with non-occlusive mesenteric ischemia (NOMI). METHODS This 8-year single-center retrospective study consecutively included all patients with histopathologically proven NOMI who underwent MDCT ≤ 48 h prior to surgical bowel resection. Two blinded radiologists jointly reviewed each examination for signs of bowel ischemia, abdominal organ infarct, mesenteric vessel size and regularity, and ancillary vascular findings. VCA administration (length and dosage), clinical and biochemical data, risk factors, and outcomes were retrieved from patients' medical records. Subgroup comparisons were performed. RESULTS Ninety patients were included (59 males, mean age 65 years); 40 (44.4%) had received VCAs before MDCT. Overall mortality was 32% (n = 29), with no significant difference between the two groups. In patients treated with VCAs, the calibre of the superior mesenteric artery (SMA) was smaller (p = 0.032), and vasoconstriction of its branches tended to be more important (p = 0.096) than in patients not treated with VCAs. The presence and extent of bowel ischemia did not significantly correlate with VCA administration, but abdominal organ infarcts tended to be more frequent (p = 0.005) and involved more organs (p = 0.088). The VCA group had lower mean arterial pressure (p = 0.006) and lower hemoglobin levels (p < 0.001). Several biomarkers of organ failure and inflammation, differed significantly with VCA use, proving worse clinical condition. CONCLUSIONS MDCT demonstrates more severe SMA vasoconstriction and tends to show increased abdominal organ infarcts after VCA administration in NOMI patients compared to NOMI patients not treated with VCAs. KEY POINTS • In critically ill patients with NOMI, MDCT demonstrates VCA support via increased vasoconstriction of the main SMA and its branches. • VCA administration in NOMI patients tends to contribute to the development of organ infarcts, as shown on MDCT. • An important degree of vasoconstriction in NOMI patients may indicate insufficient resuscitation and, thus, help clinicians in further patient management.
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Affiliation(s)
- Antoine Topolsky
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Rue du Bugnon 46, 1011, Lausanne, Switzerland
| | - Olivier Pantet
- Service of Adult Intensive Care Medicine and Burns, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Lucas Liaudet
- Service of Adult Intensive Care Medicine and Burns, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Christine Sempoux
- Service of Clinical Pathology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Alban Denys
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Rue du Bugnon 46, 1011, Lausanne, Switzerland
| | - Jean-François Knebel
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Rue du Bugnon 46, 1011, Lausanne, Switzerland
| | - Sabine Schmidt
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Rue du Bugnon 46, 1011, Lausanne, Switzerland.
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Caillat M, Degott J, Wuerzner A, Proençain M, Bonnier G, Knebel JF, Stoll C, Christen U, Durgnat V, Hofmann G, Burnier M, Wuerzner G, Schoettker P. Accuracy of blood pressure measurement across BMI categories using the OptiBP™ mobile application. Blood Press 2022; 31:288-296. [PMID: 36266938 DOI: 10.1080/08037051.2022.2132214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 11/02/2022]
Abstract
PURPOSE Obesity is a clear risk factor for hypertension. Blood pressure (BP) measurement in obese patients may be biased by cuff size and upper arm shape which may affect the accuracy of measurements. This study aimed to assess the accuracy of the OptiBP smartphone application for three different body mass index (BMI) categories (normal, overweight and obese). MATERIALS AND METHODS Participants with a wide range of BP and BMI were recruited at Lausanne University Hospital's hypertension clinic in Switzerland. OptiBP estimated BP by recording an optical signal reflecting light from the participants' fingertips into a smartphone camera. Age, sex and BP distribution were collected to fulfil the AAMI/ESH/ISO universal standards. Both auscultatory BP references and OptiBP BP were measured and compared using the simultaneous opposite arms method, as described in the 81060-2:2018 ISO norm. Subgroup analyses were performed for each BMI category. RESULTS We analyzed 414 recordings from 95 patients: 34 were overweight and 15 were obese. The OptiBP application had a performance acceptance rate of 82%. The mean and standard deviation (SD) differences between the optical BP estimations and the auscultatory reference rates (criterion 1) were respected in all subgroups: SBP mean value was 2.08 (SD 7.58); 1.32 (6.44); -2.29 (5.62) respectively in obese, overweight and normal weight subgroup. For criterion 2, which investigates the precision errors on an individual level, the threshold for systolic BP in the obese group was slightly above the requirement for this criterion. CONCLUSION This study demonstrated that the OptiBP application is easily applicable to overweight and obese participants. Differences between the reference measure and the OptiBP estimation were within ISO limits (criterion 1). In obese participants, the SD of mean error was outside criterion 2 limits. Whether auscultatory measurement, due to arm morphology or the OptiBP is associated with increasing bias in obese still needs to be studied.
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Affiliation(s)
- Mary Caillat
- Service of Anesthesiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Jean Degott
- Service of Anesthesiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Arlene Wuerzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Martin Proençain
- Swiss Center for Electronics and Microtechnology (CSEM), Neuchâtel, Switzerland
| | - Guillaume Bonnier
- Swiss Center for Electronics and Microtechnology (CSEM), Neuchâtel, Switzerland
| | | | | | | | - Virginie Durgnat
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Gregory Hofmann
- Service of Anesthesiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Michel Burnier
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Grégoire Wuerzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Patrick Schoettker
- Service of Anesthesiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Carrard J, Bacher S, Rochat-Guignard I, Knebel JF, Alamo L, Meuwly JY, Tenisch E. Necrotizing pneumonia in children: Chest computed tomography vs. lung ultrasound. Front Pediatr 2022; 10:898402. [PMID: 36090566 PMCID: PMC9461715 DOI: 10.3389/fped.2022.898402] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Received: 03/17/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The utilization of contrast-enhanced computed tomography (CT) of the chest for the diagnosis of necrotizing pneumonia (NP), a complication of community-acquired pneumonia, is controversial because of the inherent ionizing radiation involved. Over the past few years, the growing availability of bedside Lung Ultrasound (LUS) devices has led to increased use of this nonionizing imaging method for diagnosing thoracic pathology, including pneumonia. OBJECTIVE The objectives of this study were as follows: first, to compare the performance of LUS vs. CT in the identification of certain radiological signs of NP, and second, to determine whether LUS could replace CT in the diagnosis of NP. MATERIALS AND METHODS We compared retrospectively the CT and LUS images of 41 patients between 2005 and 2018 in whom at least one contrast-injected chest CT scan and one LUS had been undertaken fewer than 7 days apart. RESULTS Pleural effusions were demonstrated almost systematically (100% on CT vs. 95.8% on LUS). Visualization of septations in pleural effusions was clearly superior on LUS (20.4% on CT vs 62.5% on LUS). Concerning the detection of necrosis, we observed a strong correlation between LUS and the gold-standard CT (95.8% on LUS vs. 93.7% on CT). Parenchymal cavities were more easily detected on CT than on LUS (79.1 vs. 35.4%). CONCLUSION LUS has shown to be as effective as CT in the diagnosis of NP. The use of CT in patients with NP could be limited to the detection of complications such as bronchopleural fistulae in unfavorably evolving diseases.
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Affiliation(s)
- Johann Carrard
- Department of Radiology, Riviera-Chablais Hospital, Rennaz, and University of Lausanne, Lausanne, Switzerland
| | - Sebastien Bacher
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Isabelle Rochat-Guignard
- Department of Radiology, Riviera-Chablais Hospital, Rennaz, and University of Lausanne, Lausanne, Switzerland.,Department Woman-Mother-Child, Unit of Pediatric Pulmonology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Jean-François Knebel
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Leonor Alamo
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Jean-Yves Meuwly
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Estelle Tenisch
- Department of Radiology and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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Khadimallah I, Jenni R, Cabungcal JH, Cleusix M, Fournier M, Beard E, Klauser P, Knebel JF, Murray MM, Retsa C, Siciliano M, Spencer KM, Steullet P, Cuenod M, Conus P, Do KQ. Mitochondrial, exosomal miR137-COX6A2 and gamma synchrony as biomarkers of parvalbumin interneurons, psychopathology, and neurocognition in schizophrenia. Mol Psychiatry 2022; 27:1192-1204. [PMID: 34686767 PMCID: PMC9054672 DOI: 10.1038/s41380-021-01313-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [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] [Received: 05/12/2021] [Revised: 09/01/2021] [Accepted: 09/22/2021] [Indexed: 12/16/2022]
Abstract
Early detection and intervention in schizophrenia requires mechanism-based biomarkers that capture neural circuitry dysfunction, allowing better patient stratification, monitoring of disease progression and treatment. In prefrontal cortex and blood of redox dysregulated mice (Gclm-KO ± GBR), oxidative stress induces miR-137 upregulation, leading to decreased COX6A2 and mitophagy markers (NIX, Fundc1, and LC3B) and to accumulation of damaged mitochondria, further exacerbating oxidative stress and parvalbumin interneurons (PVI) impairment. MitoQ, a mitochondria-targeted antioxidant, rescued all these processes. Translating to early psychosis patients (EPP), blood exosomal miR-137 increases and COX6A2 decreases, combined with mitophagy markers alterations, suggest that observations made centrally and peripherally in animal model were reflected in patients' blood. Higher exosomal miR-137 and lower COX6A2 levels were associated with a reduction of ASSR gamma oscillations in EEG. As ASSR requires proper PVI-related networks, alterations in miR-137/COX6A2 plasma exosome levels may represent a proxy marker of PVI cortical microcircuit impairment. EPP can be stratified in two subgroups: (a) a patients' group with mitochondrial dysfunction "Psy-D", having high miR-137 and low COX6A2 levels in exosomes, and (b) a "Psy-ND" subgroup with no/low mitochondrial impairment, including patients having miR-137 and COX6A2 levels in the range of controls. Psy-D patients exhibited more impaired ASSR responses in association with worse psychopathological status, neurocognitive performance, and global and social functioning, suggesting that impairment of PVI mitochondria leads to more severe disease profiles. This stratification would allow, with high selectivity and specificity, the selection of patients for treatments targeting brain mitochondria dysregulation and capture the clinical and functional efficacy of future clinical trials.
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Affiliation(s)
- Ines Khadimallah
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Raoul Jenni
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly Lausanne, Switzerland
| | - Jan-Harry Cabungcal
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Martine Cleusix
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly Lausanne, Switzerland
| | - Margot Fournier
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Elidie Beard
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Paul Klauser
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly Lausanne, Switzerland
| | - Jean-François Knebel
- grid.8515.90000 0001 0423 4662The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland ,grid.8515.90000 0001 0423 4662Sensory, Perceptual and Cognitive Neuroscience Section, Center for Biomedical Imaging (CIBM), University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Micah M. Murray
- grid.8515.90000 0001 0423 4662The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland ,grid.8515.90000 0001 0423 4662Sensory, Perceptual and Cognitive Neuroscience Section, Center for Biomedical Imaging (CIBM), University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland ,grid.428685.50000 0004 0627 5427Ophthalmology Department, Fondation Asile des Aveugles and University of Lausanne, Lausanne, Switzerland
| | - Chrysa Retsa
- grid.8515.90000 0001 0423 4662The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland ,grid.8515.90000 0001 0423 4662Sensory, Perceptual and Cognitive Neuroscience Section, Center for Biomedical Imaging (CIBM), University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Milena Siciliano
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Kevin M. Spencer
- grid.410370.10000 0004 4657 1992Neural Dynamics Laboratory, Research Service, Veterans Affairs Boston Healthcare System, Boston, MA USA ,grid.38142.3c000000041936754XDepartment of Psychiatry, Harvard Medical School, Boston, MA USA
| | - Pascal Steullet
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Michel Cuenod
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Philippe Conus
- grid.9851.50000 0001 2165 4204Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly Lausanne, Switzerland
| | - Kim Q. Do
- grid.8515.90000 0001 0423 4662Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
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9
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Degott J, Ghajarzadeh-Wurzner A, Hofmann G, Proença M, Bonnier G, Lemkaddem A, Lemay M, Christen U, Knebel JF, Durgnat V, Burnier M, Wuerzner G, Schoettker P. Smartphone based blood pressure measurement: accuracy of the OptiBP mobile application according to the AAMI/ESH/ISO universal validation protocol. Blood Press Monit 2021; 26:441-448. [PMID: 34139747 PMCID: PMC8568326 DOI: 10.1097/mbp.0000000000000556] [Citation(s) in RCA: 21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 06/02/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The aim of this study was to assess the accuracy of the OptiBP mobile application based on an optical signal recorded by placing the patient's fingertip on a smartphone's camera to estimate blood pressure (BP). Measurements were carried out in a general population according to existing standards of the Association for the Advancement of Medical Instrumentation (AAMI), the European Society of Hypertension (ESH) and the International Organization for Standardization (ISO). METHODS Participants were recruited during a scheduled appointment at the hypertension clinic of Lausanne University Hospital in Switzerland. Age, gender and BP distribution were collected to fulfill AAMI/ESH/ISO universal standards. Both auscultatory BP references and OptiBP were measured and compared using the opposite arm simultaneous method as described in the 81060-2:2018 ISO norm. RESULTS A total of 353 paired recordings from 91 subjects were analyzed. For validation criterion 1, the mean ± SD between OptiBP and reference BP recordings was respectively 0.5 ± 7.7 mmHg and 0.4 ± 4.6 mmHg for SBP and DBP. For validation criterion 2, the SD of the averaged BP differences between OptiBP and reference BP per subject was 6.3 mmHg and 3.5 mmHg for SBP and DBP. OptiBP acceptance rate was 85%. CONCLUSION The smartphone embedded OptiBP cuffless mobile application fulfills the validation requirements of AAMI/ESH/ISO universal standards in a general population for the measurement of SBP and DBP.
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Affiliation(s)
| | - Arlene Ghajarzadeh-Wurzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne
| | | | - Martin Proença
- CSEM, Swiss Center for Electronics and Microtechnology, Neuchâtel
| | | | - Alia Lemkaddem
- CSEM, Swiss Center for Electronics and Microtechnology, Neuchâtel
| | - Mathieu Lemay
- CSEM, Swiss Center for Electronics and Microtechnology, Neuchâtel
| | | | | | - Virginie Durgnat
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne
| | - Michel Burnier
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne
| | - Gregoire Wuerzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne
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10
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Costa Marques D, Rocca A, Bloch J, Richoz B, Knebel JF, Levivier M, Berney A, Nater B. [Assessing occipital nerve stimulation efficacy for chronic refractory headaches]. Rev Med Suisse 2021; 17:1624-1626. [PMID: 34550657] [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: 06/13/2023]
Abstract
We prospectively followed a cohort of 26 subjects for an average period of 41 months who benefited from occipital nerve stimulation (ONS) in the context of chronic refractory headaches. In 17 patients treated, the frequency of headache decreased, and quality of life scores improved significantly. Among these patients, the "very good" response rate was 34 %. In this cohort, treatment-related adverse events are relatively common (42 %) but not severe. While it is difficult to anticipate the risk factors for non-response to treatment, we estimate that the risk of failure may not be related to the duration of the disease, but rather to the number of different preventives attempted prior to ONS.
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Affiliation(s)
| | - Alda Rocca
- Unité de neurochirurgie, Département des neurosciences cliniques, CHUV, 1011 Lausanne
| | - Jocelyne Bloch
- Faculté de biologie et de médecine, Université de Lausanne, 1004 Lausanne
- Unité de neurochirurgie, Département des neurosciences cliniques, CHUV, 1011 Lausanne
| | - Benjamin Richoz
- Department of neurosurgery, St. Olavs University Hospital, Prinsesse Kristinas gate 3, 7030 Trondheim, Norway
| | | | - Marc Levivier
- Faculté de biologie et de médecine, Université de Lausanne, 1004 Lausanne
- Unité de neurochirurgie, Département des neurosciences cliniques, CHUV, 1011 Lausanne
| | | | - Bernard Nater
- Unité de neurologie, Département des neurosciences cliniques, CHUV, 1011 Lausanne
- Volson 15, 1009 Pully
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11
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Schoettker P, Degott J, Hofmann G, Proença M, Bonnier G, Lemkaddem A, Lemay M, Schorer R, Christen U, Knebel JF, Wuerzner A, Burnier M, Wuerzner G. Blood pressure measurements with the OptiBP smartphone app validated against reference auscultatory measurements. Sci Rep 2020; 10:17827. [PMID: 33082436 PMCID: PMC7576142 DOI: 10.1038/s41598-020-74955-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 10/08/2020] [Indexed: 12/11/2022] Open
Abstract
Mobile health diagnostics have been shown to be effective and scalable for chronic disease detection and management. By maximizing the smartphones' optics and computational power, they could allow assessment of physiological information from the morphology of pulse waves and thus estimate cuffless blood pressure (BP). We trained the parameters of an existing pulse wave analysis algorithm (oBPM), previously validated in anaesthesia on pulse oximeter signals, by collecting optical signals from 51 patients fingertips via a smartphone while simultaneously acquiring BP measurements through an arterial catheter. We then compared smartphone-based measurements obtained on 50 participants in an ambulatory setting via the OptiBP app against simultaneously acquired auscultatory systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean blood pressure (MBP) measurements. Patients were normotensive (70.0% for SBP versus 61.4% for DBP), hypertensive (17.1% vs. 13.6%) or hypotensive (12.9% vs. 25.0%). The difference in BP (mean ± standard deviation) between both methods were within the ISO 81,060-2:2018 standard for SBP (- 0.7 ± 7.7 mmHg), DBP (- 0.4 ± 4.5 mmHg) and MBP (- 0.6 ± 5.2 mmHg). These results demonstrate that BP can be measured with accuracy at the finger using the OptiBP smartphone app. This may become an important tool to detect hypertension in various settings, for example in low-income countries, where the availability of smartphones is high but access to health care is low.
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Affiliation(s)
- Patrick Schoettker
- Department of Anesthesiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
| | - Jean Degott
- Department of Anesthesiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Gregory Hofmann
- Department of Anesthesiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Martin Proença
- CSEM, Swiss Center for Electronics and Microtechnology, Neuchâtel, Switzerland
| | - Guillaume Bonnier
- CSEM, Swiss Center for Electronics and Microtechnology, Neuchâtel, Switzerland
| | - Alia Lemkaddem
- CSEM, Swiss Center for Electronics and Microtechnology, Neuchâtel, Switzerland
| | - Mathieu Lemay
- CSEM, Swiss Center for Electronics and Microtechnology, Neuchâtel, Switzerland
| | - Raoul Schorer
- Department of Acute Medicine, Geneva University Hospital and University of Geneva, Geneva, Switzerland
| | | | | | - Arlene Wuerzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Michel Burnier
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Gregoire Wuerzner
- Service of Nephrology and Hypertension, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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12
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Rotzinger DC, Knebel JF, Jouannic AM, Adler G, Qanadli SD. CT Pulmonary Angiography for Risk Stratification of Patients with Nonmassive Acute Pulmonary Embolism. Radiol Cardiothorac Imaging 2020; 2:e190188. [PMID: 33778598 DOI: 10.1148/ryct.2020190188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 02/24/2020] [Accepted: 04/21/2020] [Indexed: 01/21/2023]
Abstract
Purpose To investigate the prognostic value of an integrative approach combining clinical variables and the Qanadli CT obstruction index (CTOI) in patients with nonmassive acute pulmonary embolism (PE). Materials and Methods This retrospective study included 705 consecutive patients (mean age, 63 years; range, 18-95 years) with proven PE. Clot burden was quantified using the CTOI, which reflects the ratio of fully or partially obstructed pulmonary arteries to normal arteries. Patients were subdivided into two groups according to the presence (group A) or absence (group B) of preexisting cardiopulmonary disease. Thirty-day and 3-month mortality was evaluated. CTOI thresholds of 20% and 40% were used to stratify patients regarding outcome (low, intermediate, and high risk). The predictive value of CTOI was assessed through logistic regression analysis. Results Analysis included 690 patients (mean age, 63.3 years ± 18 [standard deviation]) with complete follow-up data: 247 (36%) in group A and 443 (64%) in group B. The mean CTOI was 23% ± 19, 30-day mortality was 9.7%, and 3-month mortality was 11.6%. Three-month mortality was higher in group A than in group B (17.8% and 8.1%, respectively; P = .001). Within group B, CTOI predicted outcome and allowed stratification: significantly higher mortality with CTOI greater than 40% (P < .001) and lower mortality with CTOI less than 20% (P = .05). CTOI did not predict outcome in group A. Age was an independent mortality risk factor (P ≤ .04). Conclusion CTOI predicted outcome in this cohort of patients with PE and no cardiopulmonary disease, and it may provide a simple single-examination-based approach for risk stratification in this subset of patients.© RSNA, 2020See also the commentary by Kay and Abbara in this issue.
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Affiliation(s)
- David C Rotzinger
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology (D.C.R., A.M.J., S.D.Q.) and EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM) and Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology (J.F.K.), Lausanne University Hospital (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland; Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland (D.C.R., J.F.K., S.D.Q.); and Imagerive Diagnostic Radiology Institute, Geneva, Switzerland (G.A.)
| | - Jean-François Knebel
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology (D.C.R., A.M.J., S.D.Q.) and EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM) and Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology (J.F.K.), Lausanne University Hospital (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland; Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland (D.C.R., J.F.K., S.D.Q.); and Imagerive Diagnostic Radiology Institute, Geneva, Switzerland (G.A.)
| | - Anne-Marie Jouannic
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology (D.C.R., A.M.J., S.D.Q.) and EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM) and Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology (J.F.K.), Lausanne University Hospital (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland; Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland (D.C.R., J.F.K., S.D.Q.); and Imagerive Diagnostic Radiology Institute, Geneva, Switzerland (G.A.)
| | - Ghazal Adler
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology (D.C.R., A.M.J., S.D.Q.) and EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM) and Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology (J.F.K.), Lausanne University Hospital (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland; Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland (D.C.R., J.F.K., S.D.Q.); and Imagerive Diagnostic Radiology Institute, Geneva, Switzerland (G.A.)
| | - Salah D Qanadli
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology (D.C.R., A.M.J., S.D.Q.) and EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM) and Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology (J.F.K.), Lausanne University Hospital (CHUV), Rue du Bugnon 46, 1011 Lausanne, Switzerland; Faculty of Biology and Medicine (FBM), University of Lausanne (UNIL), Lausanne, Switzerland (D.C.R., J.F.K., S.D.Q.); and Imagerive Diagnostic Radiology Institute, Geneva, Switzerland (G.A.)
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13
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Zeugin D, Notter MP, Knebel JF, Ionta S. Temporo-parietal contribution to the mental representations of self/other face. Brain Cogn 2020; 143:105600. [PMID: 32707434 DOI: 10.1016/j.bandc.2020.105600] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 03/31/2020] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 01/08/2023]
Abstract
Face recognition requires comparing the current visual input with stored mental representations of faces. Based on its role in visual recognition of faces and mental representation of the body, we hypothesized that the right temporo-parietal junction (rTPJ) could be implicated also in processing mental representation of faces. To test this hypothesis, we asked 30 neurotypical participants to perform mental rotation (laterality judgment of rotated pictures) of self- and other-face images, before and after the inhibition of rTPJ through repetitive transcranial magnetic stimulation. After inhibition of rTPJ the mental rotation of self-face was slower than other-face. In the control condition the mental rotation of self/other faces was not significantly different. This supports that the role of rTPJ extends to mental representation of faces, specifically for the self. Since the experimental task did not require to explicitly recognize identity, we propose that unconscious identity attribution affects also the mental representation of faces. The present study offers insights on the involvement rTPJ in mental representation of faces and proposes that the neural substrate dedicated to mental representation of faces goes beyond the traditional visual and memory areas.
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Affiliation(s)
- David Zeugin
- Sensory-Motor Lab (SeMoLa), Department of Ophthalmology-University of Lausanne, Jules Gonin Eye Hospital-Fondation Asile des Aveugles, Lausanne, Switzerland; Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Michael P Notter
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Jean-François Knebel
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland
| | - Silvio Ionta
- Sensory-Motor Lab (SeMoLa), Department of Ophthalmology-University of Lausanne, Jules Gonin Eye Hospital-Fondation Asile des Aveugles, Lausanne, Switzerland; Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland.
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14
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Hayoz R, Vietti-Violi N, Duran R, Knebel JF, Ledoux JB, Dromain C. The combination of hepatobiliary phase with Gd-EOB-DTPA and DWI is highly accurate for the detection and characterization of liver metastases from neuroendocrine tumor. Eur Radiol 2020; 30:6593-6602. [PMID: 32601948 DOI: 10.1007/s00330-020-06930-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [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: 02/15/2020] [Revised: 03/28/2020] [Accepted: 04/29/2020] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To compare the diagnostic accuracy of dynamic contrast-enhanced phases, hepatobiliary phase (HBP), and diffusion-weighted imaging (DWI) for the detection of liver metastases from neuroendocrine tumor (NET). METHODS Sixty-seven patients with suspected NET liver metastases underwent gadoxetic acid-enhanced MRI. Three radiologists read four imaging sets separately and independently: DWI, T2W+dynamic, T2WI+HBP, and DWI+HBP. Reference standard included all imaging, histological findings, and clinical data. Sensitivity and specificity were calculated and compared for each imaging set. Interreader agreement was evaluated by intraclass correlation coefficient (ICC). Univariate logistic regression was performed to evaluate lesion characteristics (size, ADC, and enhancing pattern) associated to false positive and negative lesions. RESULTS Six hundred twenty-five lesions (545 metastases, 80 benign lesions) were identified. Detection rate was significantly higher combining DWI+HBP than the other imaging sets (sensitivity 86% (95% confidence interval (CI) 0.845-0.878), specificity 94% (95% CI 0.901-0.961)). The sensitivity and specificity of the other sets were 82% and 65% for DWI, 88% and 69% for T2WI, and 90% and 82% for HBP+T2WI, respectively. The interreader agreement was statistically higher for both HBP sets (ICC = 0.96 (95% CI 0.94-0.97) for T2WI+HBP and ICC = 0.91 (95% CI 0.87-0.94) for DWI+HBP, respectively) compared with that for DWI (ICC = 0.76 (95% CI 0.66-0.83)) and T2+dynamic (ICC = 0.85 (95% CI 0.79-0.9)). High ADC values, large lesion size, and hypervascular pattern lowered the risk of false negative. CONCLUSION Given the high diagnostic accuracy of combining DWI+HBP, gadoxetic acid-enhanced MRI is to be considered in NET patients with suspected liver metastases. Fast MRI protocol using T2WI, DWI, and HBP is of interest in this population. KEY POINTS • The combined set of diffusion-weighted (DW) and hepatobiliary phase (HBP) images yields the highest sensitivity and specificity for neuroendocrine liver metastasis (NELM) detection. • Gadoxetic acid should be the contrast agent of choice for liver MRI in NET patients. • The combined set of HBP and DWI sequences could also be used as a tool of abbreviated MRI in follow-up or assessment of treatment such as somatostatin analogs.
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Affiliation(s)
- Roschan Hayoz
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, CH-1011, Lausanne, Switzerland
| | - Naïk Vietti-Violi
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, CH-1011, Lausanne, Switzerland
| | - Rafael Duran
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, CH-1011, Lausanne, Switzerland.
| | - Jean-François Knebel
- EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM) and Laboratory for Investigative Neurophysiology (The LINE), Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, Lausanne, 1011, Switzerland
| | - Jean-Baptiste Ledoux
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, CH-1011, Lausanne, Switzerland
| | - Clarisse Dromain
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, CH-1011, Lausanne, Switzerland
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15
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Taffin H, Maurey H, Ozanne A, Durand P, Husson B, Knebel JF, Adamsbaum C, Deiva K, Saliou G. Long-term outcome of vein of Galen malformation. Dev Med Child Neurol 2020; 62:729-734. [PMID: 31713850 DOI: 10.1111/dmcn.14392] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/26/2019] [Indexed: 11/26/2022]
Abstract
AIM To describe the long-term outcomes of children by the time they reached school age with vein of Galen aneurysmal malformation (VGAM). METHOD This was a retrospective observational study on a consecutive cohort of patients with VGAM. We included patients with at least one Francophone parent, aged between 6 and 11 years at the time of long-term evaluation. The neurological outcome was assessed with the King's Outcome Scale for Childhood Injury score and eight neurological and behavioural items from the Rivermead Postconcussion Symptoms questionnaire. RESULTS All 52 patients (17 females, 32 males [data missing for n=3]) with at least one Francophone parent (5 fetuses and 47 children) were included. At the long-term evaluation time-point, 33 patients were alive and 19 patients had died. Risk of postnatal death was associated with severe neonatal cardiac failure (p=0.007) or isosystemic or suprasystemic pulmonary hypertension (p=0.014). Among survivors, 19 had a good outcome with normal schooling and 14 had a poor outcome. Moreover, among the good outcome patients, a large proportion had neurodevelopmental alterations. INTERPRETATION Long-term outcome of patients with VGAM appears to be less favourable than outcome described at the short- and medium-term, even in the absence of encephalomalacia at birth. Even patients with good outcome often have neuropsychological disorders that may have repercussions on learning and requiring appropriate rehabilitation or medical management. WHAT THIS PAPER ADDS Long-term outcome appears to be less favourable than described at short- and medium-term follow-up. Even patients with good outcome at these time-points often have minor neuropsychological disorders.
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Affiliation(s)
- Hélène Taffin
- Neurologie Pédiatrique, Hôpital Bicêtre, Le Kremlin Bicêtre, France
| | - Hélène Maurey
- Neurologie Pédiatrique, Hôpital Bicêtre, Le Kremlin Bicêtre, France
| | - Augustin Ozanne
- Neuroradiologie, Hôpital Bicêtre, Le Kremlin Bicêtre, France
| | - Philippe Durand
- Réanimation Pédiatrique, Hôpital Bicêtre, Le Kremlin Bicêtre, France
| | - Béatrice Husson
- Radiologie Pédiatrique, Hôpital Bicêtre, Le Kremlin Bicêtre, France
| | - Jean-François Knebel
- Radiodiagnostic et Radiologie Interventionnelle, Centre Hospitalier et Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Catherine Adamsbaum
- Radiologie Pédiatrique, Hôpital Bicêtre, Le Kremlin Bicêtre, France.,LTCI, CNRS, Télécom ParisTech, Université Paris-Saclay, Paris, France
| | - Kumaran Deiva
- Neurologie Pédiatrique, Hôpital Bicêtre, Le Kremlin Bicêtre, France
| | - Guillaume Saliou
- Neuroradiologie, Hôpital Bicêtre, Le Kremlin Bicêtre, France.,Radiodiagnostic et Radiologie Interventionnelle, Centre Hospitalier et Universitaire Vaudois (CHUV), Lausanne, Switzerland.,Faculté de Biologie et de Médecine, UNIL, Lausanne, Switzerland
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16
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Zanchi F, Richard R, Hussami M, Monier A, Knebel JF, Omoumi P. MRI of non-specific low back pain and/or lumbar radiculopathy: do we need T1 when using a sagittal T2-weighted Dixon sequence? Eur Radiol 2020; 30:2583-2593. [PMID: 32020402 PMCID: PMC7160219 DOI: 10.1007/s00330-019-06626-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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] [Received: 07/26/2019] [Revised: 11/16/2019] [Accepted: 12/12/2019] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To show that for the MRI workup of non-specific low back pain and/or lumbar radiculopathy, the acquisition of T1-weighted sequences in the sagittal plane could be waived when using an FSE T2-weighted Dixon sequence. MATERIALS AND METHODS Three musculoskeletal radiologists retrospectively reviewed fifty lumbar spine MRI examinations performed for non-specific low back pain and/or lumbar radiculopathy. Two protocols were separately analyzed in the sagittal plane: a standard protocol (T1-weighted, in-phase, and water-only images of an FSE T2-weighted Dixon sequence) and a simplified protocol (fat-only, in-phase, and water-only images of an FSE T2-weighted Dixon sequence). Eight items usually assessed on T1-weighted sequences were analyzed for each of the vertebrae (n = 250), vertebral endplates (n = 500), vertebral corners (n = 1000), foramina (n = 500), lamina (n = 500), and facet joints (n = 500). Interchangeability of these protocols was tested using the individual equivalence index. A decrease in interobserver agreement of ≥ 5% when one reader used the simplified protocol compared with when both readers used the standard protocol was considered clinically significant. Interreader and intrareader agreement were assessed using kappa statistics. Rates of findings with each protocol were compared using odd ratios. RESULTS The standard and simplified protocols were interchangeable (range of upper bound of the 95%CI of individual equivalence index = 0.25 to 1.38%). Intraprotocol and interprotocol interreader kappa values were similar (0.253-0.671 vs. 0.236-0.723, respectively). Rates of findings were not statistically significantly different (p ≥ 0.074), or were higher with the simplified protocol (p ≤ 0.036). CONCLUSION In our target population, a single sagittal T2-weighted Dixon sequence may replace the recommended combination of T1-, T2-, and fat-suppressed T2-weighted sequences. KEY POINTS • In patients with non-specific low back pain or lumbar radiculopathy, spine MRI in the sagittal plane could be limited to a single FSE T2-weighted Dixon sequence, hereby reducing the acquisition time. • A simplified protocol of spine MRI in the sagittal plane combining FSE T2-weighted Dixon sequence provides the same information as a standard protocol including T1-, T2-, and fat-suppressed T2-weighted sequences for the workup of degenerative lumbar spine lesions. • For some findings shown on the simplified protocol, such as focal bone marrow replacement lesions or signs of infection, additional sequences including pre- and post-contrast T1-weighted sequences may be required, as is currently the case when using the standard protocol.
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Affiliation(s)
- Fabio Zanchi
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, 1011, Lausanne, Switzerland
| | - Raphaël Richard
- Department of Radiology, Riviera-Chablais Hospital, Avenue de la Prairie 10, 1800, Vevey, Switzerland
| | - Mahmoud Hussami
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, 1011, Lausanne, Switzerland
- Department of Radiology, Riviera-Chablais Hospital, Avenue de la Prairie 10, 1800, Vevey, Switzerland
| | - Arnaud Monier
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, 1011, Lausanne, Switzerland
| | - Jean-François Knebel
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology, University Hospital Center and University of Lausanne, 1011, Lausanne, Switzerland
- EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM), 1011, Lausanne, Switzerland
| | - Patrick Omoumi
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, Rue du Bugnon 46, 1011, Lausanne, Switzerland.
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Denervaud S, Knebel JF, Hagmann P, Gentaz E. Beyond executive functions, creativity skills benefit academic outcomes: Insights from Montessori education. PLoS One 2019; 14:e0225319. [PMID: 31751404 PMCID: PMC6874078 DOI: 10.1371/journal.pone.0225319] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 11/01/2019] [Indexed: 12/02/2022] Open
Abstract
Studies have shown scholastic, creative, and social benefits of Montessori education, benefits that were hypothesized to result from better executive functioning on the part of those so educated. As these previous studies have not reported consistent outcomes supporting this idea, we therefore evaluated scholastic development in a cross-sectional study of kindergarten and elementary school-age students, with an emphasis on the three core executive measures of cognitive flexibility, working memory update, and selective attention (inhibition). Two hundred and one (201) children underwent a complete assessment: half of the participants were from Montessori settings, while the other half were controls from traditional schools. The results confirmed that Montessori participants outperformed peers from traditional schools both in academic outcomes and in creativity skills across age groups and in self-reported well-being at school at kindergarten age. No differences were found in global executive functions, except working memory. Moreover, a multiple mediations model revealed a significant impact of creative skills on academic outcomes influenced by the school experience. These results shed light on the possibly overestimated contribution of executive functions as the main contributor to scholastic success of Montessori students and call for further investigation. Here, we propose that Montessori school-age children benefit instead from a more balanced development stemming from self-directed creative execution.
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Affiliation(s)
- Solange Denervaud
- The Center for Affective Sciences (CISA), Campus Biotech, University of Geneva, Geneva, Switzerland
- Faculty of Psychology and Educational Sciences (FAPSE), University of Geneva, Geneva, Switzerland
- The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
- Connectomics Lab, Department of Radiology, Lausanne University Hospital and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
- * E-mail:
| | - Jean-François Knebel
- The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
| | - Patric Hagmann
- Connectomics Lab, Department of Radiology, Lausanne University Hospital and University of Lausanne (CHUV-UNIL), Lausanne, Switzerland
| | - Edouard Gentaz
- The Center for Affective Sciences (CISA), Campus Biotech, University of Geneva, Geneva, Switzerland
- Faculty of Psychology and Educational Sciences (FAPSE), University of Geneva, Geneva, Switzerland
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Attwell C, Jöhr J, Pincherle A, Pignat JM, Kaufmann N, Knebel JF, Berney L, Ryvlin P, Diserens K. Neurosensory stimulation outdoors enhances cognition recovery in cognitive motor dissociation: A prospective crossover study. NeuroRehabilitation 2019; 44:545-554. [PMID: 31282434 PMCID: PMC6700645 DOI: 10.3233/nre-192692] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND: Neurosensory stimulation is effective in enhancing the recovery process of severely brain-injured patients with disorders of consciousness. Multisensory environments are found in nature, recognized as beneficial to many medical conditions. Recent advances detected covert cognition in patients behaviorally categorized as un- or minimally responsive; a state described as cognitive motor dissociation (CMD). OBJECTIVE: To determine effectiveness of a neurosensory stimulation approach enhanced by outdoor therapy, in the early phases of recovery in patients presenting with CMD. METHODS: A prospective non-randomized crossover study was performed. A two-phase neurosensory procedure combined identical individually goal assessed indoor and outdoor protocols. All sessions were video-recorded and observations rated offline. The frequency of volitional behavior was measured using a behavioral grid. RESULTS: Fifteen patients participated in this study. The outdoor group patients had statistically significant higher number of intentional behaviors than the indoor group on seven features of the grid. Additionally, for all items assessed, total amount of behaviors in the outdoor condition where higher than those in the indoor condition. CONCLUSIONS: Although preliminary, this study provides robust evidence supporting the effectiveness and appropriateness of an outdoor neurosensory intervention in patients with covert cognition, to improve adaptive goal-oriented behavior. This may be a step towards helping to restore functional interactive communication.
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Affiliation(s)
- Caroline Attwell
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Jane Jöhr
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Alessandro Pincherle
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Jean-Michel Pignat
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Nina Kaufmann
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Jean-François Knebel
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Loric Berney
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Philippe Ryvlin
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
| | - Karin Diserens
- Department of Clinical Neurosciences, Neurology, Acute Neurorehabilitation Unit, University Hospital CHUV, Lausanne, Vaud, Switzerland
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Ponti A, Denys A, Digklia A, Schaefer N, Hocquelet A, Knebel JF, Michielin O, Dromain C, Duran R. First-Line Selective Internal Radiation Therapy in Patients with Uveal Melanoma Metastatic to the Liver. J Nucl Med 2019; 61:350-356. [DOI: 10.2967/jnumed.119.230870] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/05/2019] [Indexed: 01/05/2023] Open
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Rotzinger DC, Breault S, Knebel JF, Beigelman-Aubry C, Jouannic AM, Qanadli SD. Can a Trained Radiology Technician Do Arterial Obstruction Quantification in Patients With Acute Pulmonary Embolism? Front Cardiovasc Med 2019; 6:38. [PMID: 31024932 PMCID: PMC6469400 DOI: 10.3389/fcvm.2019.00038] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/21/2019] [Indexed: 11/26/2022] Open
Abstract
Objectives: To assess interobserver variability between a trained radiology technician (RT) and an experienced radiologist in arterial obstruction quantification using the Qanadli obstruction index (QOI), in patients diagnosed with acute pulmonary embolism (APE) at CT pulmonary angiography (CTPA). Materials and Methods: A RT and a radiologist independently reviewed CTPAs of 97 consecutive, prospectively enrolled patients with APE, and calculated the QOI. They classified patients into three risk categories: high for QOI ≥40%, intermediate for QOI 20–37.5%, low for QOI <20%. Interobserver variability was investigated for QOI as a continuous variable and as a categorical variable (high, intermediate, and low-risk groups). Results: Mean QOI (±SD) was 39.5 ± 24.3% and 38.6 ± 18.9% for the RT and the radiologist, respectively. The mean QOI was not statistically different between the RT and the radiologist (p = 0.502), and the interobserver agreement was excellent (ICC = 0.905). The RT classified 54 patients (55.7%) as high, 17 (17.53%) as intermediate, and 26 (26.8%) as low risk. The radiologist classified 55 patients (56.7%) as high, 22 (22.7%) as intermediate, and 20 (20.6%) as low risk. The interrater agreement for risk stratification was excellent (weighted kappa = 0.844). Conclusion: Once the diagnosis of APE was established, an adequately trained RT achieved an accuracy comparable to that of an experienced radiologist regarding QOI calculation and risk assessment.
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Affiliation(s)
- David C Rotzinger
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Stéphane Breault
- Département D'imagerie Médicale, CIUSSS du Nord-de-l'île-de-Montréal, Hôpital du Sacré-Cœur de Montréal, Montréal, QC, Canada
| | - Jean-François Knebel
- EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM) and Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology, University Hospital Centre and University of Lausanne, Lausanne, Switzerland
| | - Catherine Beigelman-Aubry
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Anne-Marie Jouannic
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Salah D Qanadli
- Cardiothoracic and Vascular Division, Department of Diagnostic and Interventional Radiology, Lausanne University Hospital, Lausanne, Switzerland
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Tivadar RI, Rouillard T, Chappaz C, Knebel JF, Turoman N, Anaflous F, Roche J, Matusz PJ, Murray MM. Mental Rotation of Digitally-Rendered Haptic Objects. Front Integr Neurosci 2019; 13:7. [PMID: 30930756 PMCID: PMC6427928 DOI: 10.3389/fnint.2019.00007] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 02/25/2019] [Indexed: 11/13/2022] Open
Abstract
Sensory substitution is an effective means to rehabilitate many visual functions after visual impairment or blindness. Tactile information, for example, is particularly useful for functions such as reading, mental rotation, shape recognition, or exploration of space. Extant haptic technologies typically rely on real physical objects or pneumatically driven renderings and thus provide a limited library of stimuli to users. New developments in digital haptic technologies now make it possible to actively simulate an unprecedented range of tactile sensations. We provide a proof-of-concept for a new type of technology (hereafter haptic tablet) that renders haptic feedback by modulating the friction of a flat screen through ultrasonic vibrations of varying shapes to create the sensation of texture when the screen is actively explored. We reasoned that participants should be able to create mental representations of letters presented in normal and mirror-reversed haptic form without the use of any visual information and to manipulate such representations in a mental rotation task. Healthy sighted, blindfolded volunteers were trained to discriminate between two letters (either L and P, or F and G; counterbalanced across participants) on a haptic tablet. They then tactually explored all four letters in normal or mirror-reversed form at different rotations (0°, 90°, 180°, and 270°) and indicated letter form (i.e., normal or mirror-reversed) by pressing one of two mouse buttons. We observed the typical effect of rotation angle on object discrimination performance (i.e., greater deviation from 0° resulted in worse performance) for trained letters, consistent with mental rotation of these haptically-rendered objects. We likewise observed generally slower and less accurate performance with mirror-reversed compared to prototypically oriented stimuli. Our findings extend existing research in multisensory object recognition by indicating that a new technology simulating active haptic feedback can support the generation and spatial manipulation of mental representations of objects. Thus, such haptic tablets can offer a new avenue to mitigate visual impairments and train skills dependent on mental object-based representations and their spatial manipulation.
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Affiliation(s)
- Ruxandra I. Tivadar
- The Laboratory for Investigative Neurophysiology (LINE), Department of Radiology and Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland
- Department of Ophthalmology, Fondation Asile des Aveugles, Lausanne, Switzerland
| | | | | | - Jean-François Knebel
- The Laboratory for Investigative Neurophysiology (LINE), Department of Radiology and Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland
- Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, Lausanne, Switzerland
| | - Nora Turoman
- The Laboratory for Investigative Neurophysiology (LINE), Department of Radiology and Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Fatima Anaflous
- Department of Ophthalmology, Fondation Asile des Aveugles, Lausanne, Switzerland
| | - Jean Roche
- Department of Ophthalmology, Fondation Asile des Aveugles, Lausanne, Switzerland
| | - Pawel J. Matusz
- The Laboratory for Investigative Neurophysiology (LINE), Department of Radiology and Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland
- Information Systems Institute at the University of Applied Sciences Western Switzerland (HES-SO Valais), Sierre, Switzerland
- Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, United States
| | - Micah M. Murray
- The Laboratory for Investigative Neurophysiology (LINE), Department of Radiology and Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland
- Department of Ophthalmology, Fondation Asile des Aveugles, Lausanne, Switzerland
- Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, Lausanne, Switzerland
- Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, United States
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Kapitanova M, Knebel JF, El Ezzi O, Artaz M, de Buys Roessingh AS, Richard C. Influence of infancy care strategy on hearing in children and adolescents: A longitudinal study of children with unilateral lip and /or cleft palate. Int J Pediatr Otorhinolaryngol 2018; 114:80-86. [PMID: 30262372 DOI: 10.1016/j.ijporl.2018.08.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 08/09/2018] [Accepted: 08/24/2018] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To evaluate the relation between ventilation tube insertion, otitis media with effusion duration and otologic outcomes in unilateral cleft lip and/or cleft palate children from infancy to teenage age. DESIGN AND POPULATION Retrospective longitudinal charts review of patients from the multidisciplinary cleft team of the University Hospital of Lausanne over a 30-year period. 146 charts from consecutive patients with non-syndromic unilateral cleft lip and/or cleft palate who were born between January 1986 and January 2003 were included. RESULTS The earlier in life a cleft child experience his first otitis media with effusion (OME), the worse his long-term hearing will be. Along with the age of onset of OME, we disclosed an influence of the duration of OME without ventilation tube (VT) insertion on short and long-term hearing outcomes. Different patterns were observed between cleft palate (CP) and cleft lip palate children (CLP), with a higher incidence of otitis media with effusion for the CLP group than the CP group. Direct positive relationship between VT insertion and hearing were disclosed and evaluation of long-term complications did not reveal significant relation with VT insertion. Of note, OME in CLP children led to a higher rate (but not statistically significant) of chronic ear complications than in the CP group, that may indicate more persistent OME or different adverse effect on the middle ear mucosa between CP and CLP children. CONCLUSIONS Individualized counseling should take into account different factors such as the type of cleft, the age of onset of OME and duration of OME, keeping in mind the adverse effect of persistent middle ear fluid. In the present report, results prone an early ventilation tube insertion to prevent short and long-term injury to the middle ear homeostasis, hearing loss and related issues.
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Affiliation(s)
- Maryna Kapitanova
- ENT, Head and Neck Surgery Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Jean-François Knebel
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences University Hospital Center and University of Lausanne, Lausanne, Switzerland; EEG Brain Mapping Core Centre for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Oumama El Ezzi
- Cleft Palate Multidisciplinary Team, University Hospital Center and University of Lausanne, Lausanne, Switzerland; Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| | - Mélody Artaz
- ENT, Head and Neck Surgery Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland; Cleft Palate Multidisciplinary Team, University Hospital Center and University of Lausanne, Lausanne, Switzerland
| | - Anthony S de Buys Roessingh
- Cleft Palate Multidisciplinary Team, University Hospital Center and University of Lausanne, Lausanne, Switzerland; Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| | - Céline Richard
- ENT, Head and Neck Surgery Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland; Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences University Hospital Center and University of Lausanne, Lausanne, Switzerland; Cleft Palate Multidisciplinary Team, University Hospital Center and University of Lausanne, Lausanne, Switzerland.
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Marot A, Henrion J, Knebel JF, Deltenre P. Individualized prediction of hepatocellular carcinoma occurrence in a large cohort of patients with cirrhosis. J Hepatol 2018; 69:975-976. [PMID: 30049546 DOI: 10.1016/j.jhep.2018.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/05/2018] [Accepted: 06/13/2018] [Indexed: 12/04/2022]
Affiliation(s)
- Astrid Marot
- Department of Gastroenterology and Hepatology, CHU UCL Namur, Université Catholique de Louvain, Yvoir, Belgium.
| | - Jean Henrion
- Department of Gastroenterology and Hepatology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - Jean-François Knebel
- Division of Radiology, Centre d'Imagerie Biomédicale (CIBM), Hôpital Nestlé, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Pierre Deltenre
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium; Department of Gastroenterology and Hepatology, Clinique St Luc, Bouge, Belgium
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Crézé C, Candal L, Cros J, Knebel JF, Seyssel K, Stefanoni N, Schneiter P, Murray MM, Tappy L, Toepel U. The Impact of Caloric and Non-Caloric Sweeteners on Food Intake and Brain Responses to Food: A Randomized Crossover Controlled Trial in Healthy Humans. Nutrients 2018; 10:E615. [PMID: 29762471 PMCID: PMC5986495 DOI: 10.3390/nu10050615] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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] [Received: 04/12/2018] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 01/01/2023] Open
Abstract
Whether non-nutritive sweetener (NNS) consumption impacts food intake behavior in humans is still unclear. Discrepant sensory and metabolic signals are proposed to mislead brain regulatory centers, in turn promoting maladaptive food choices favoring weight gain. We aimed to assess whether ingestion of sucrose- and NNS-sweetened drinks would differently alter brain responses to food viewing and food intake. Eighteen normal-weight men were studied in a fasted condition and after consumption of a standardized meal accompanied by either a NNS-sweetened (NNS), or a sucrose-sweetened (SUC) drink, or water (WAT). Their brain responses to visual food cues were assessed by means of electroencephalography (EEG) before and 45 min after meal ingestion. Four hours after meal ingestion, spontaneous food intake was monitored during an ad libitum buffet. With WAT, meal intake led to increased neural activity in the dorsal prefrontal cortex and the insula, areas linked to cognitive control and interoception. With SUC, neural activity in the insula increased as well, but decreased in temporal regions linked to food categorization, and remained unchanged in dorsal prefrontal areas. The latter modulations were associated with a significantly lower total energy intake at buffet (mean kcal ± SEM; 791 ± 62) as compared to WAT (942 ± 71) and NNS (917 ± 70). In contrast to WAT and SUC, NNS consumption did not impact activity in the insula, but led to increased neural activity in ventrolateral prefrontal regions linked to the inhibition of reward. Total energy intake at the buffet was not significantly different between WAT and NNS. Our findings highlight the differential impact of caloric and non-caloric sweeteners on subsequent brain responses to visual food cues and energy intake. These variations may reflect an initial stage of adaptation to taste-calorie uncoupling, and could be indicative of longer-term consequences of repeated NNS consumption on food intake behavior.
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Affiliation(s)
- Camille Crézé
- Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Laura Candal
- Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Jérémy Cros
- Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Jean-François Knebel
- The Laboratory for Investigative Neurophysiology (The LINE), Departments of Radiology and Clinical Neurosciences, University of Lausanne and Lausanne University Hospital, 1011 Lausanne, Switzerland.
- Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, 1015 Lausanne, Switzerland.
| | - Kevin Seyssel
- Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Nathalie Stefanoni
- Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Philippe Schneiter
- Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Micah M Murray
- The Laboratory for Investigative Neurophysiology (The LINE), Departments of Radiology and Clinical Neurosciences, University of Lausanne and Lausanne University Hospital, 1011 Lausanne, Switzerland.
- Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, 1015 Lausanne, Switzerland.
- Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN 37232, USA.
- Department of Ophthalmology, Jules Gonin Eye Hospital, 1004 Lausanne, Switzerland.
| | - Luc Tappy
- Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, 1005 Lausanne, Switzerland.
- Metabolic Center, Hôpital Intercantonal de la Broye, 1470 Estavayer-le-Lac, Switzerland.
| | - Ulrike Toepel
- The Laboratory for Investigative Neurophysiology (The LINE), Departments of Radiology and Clinical Neurosciences, University of Lausanne and Lausanne University Hospital, 1011 Lausanne, Switzerland.
- Electroencephalography Brain Mapping Core, Center for Biomedical Imaging (CIBM) of Lausanne and Geneva, 1015 Lausanne, Switzerland.
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Vietti Violi N, Duran R, Guiu B, Cercueil JP, Aubé C, Digklia A, Pache I, Deltenre P, Knebel JF, Denys A. Efficacy of microwave ablation versus radiofrequency ablation for the treatment of hepatocellular carcinoma in patients with chronic liver disease: a randomised controlled phase 2 trial. Lancet Gastroenterol Hepatol 2018; 3:317-325. [DOI: 10.1016/s2468-1253(18)30029-3] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 01/16/2018] [Accepted: 01/17/2018] [Indexed: 02/07/2023]
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Crézé C, Notter-Bielser ML, Knebel JF, Campos V, Tappy L, Murray M, Toepel U. The impact of replacing sugar- by artificially-sweetened beverages on brain and behavioral responses to food viewing – An exploratory study. Appetite 2018; 123:160-168. [DOI: 10.1016/j.appet.2017.12.019] [Citation(s) in RCA: 6] [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: 09/27/2017] [Revised: 12/02/2017] [Accepted: 12/15/2017] [Indexed: 01/19/2023]
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Retsa C, Knebel JF, Geiser E, Ferrari C, Jenni R, Fournier M, Alameda L, Baumann PS, Clarke S, Conus P, Do KQ, Murray MM. Treatment in early psychosis with N-acetyl-cysteine for 6months improves low-level auditory processing: Pilot study. Schizophr Res 2018; 191:80-86. [PMID: 28711476 DOI: 10.1016/j.schres.2017.07.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 06/27/2017] [Accepted: 07/03/2017] [Indexed: 02/03/2023]
Abstract
Sensory impairments constitute core dysfunctions in schizophrenia. In the auditory modality, impaired mismatch negativity (MMN) has been observed in chronic schizophrenia and may reflect N-methyl-d-aspartate (NMDA) hypo-function, consistent with models of schizophrenia based on oxidative stress. Moreover, a recent study demonstrated deficits in the N100 component of the auditory evoked potential (AEP) in early psychosis patients. Previous work has shown that add-on administration of the glutathione precursor N-acetyl-cysteine (NAC) improves the MMN and clinical symptoms in chronic schizophrenia. To date, it remains unknown whether NAC also improves general low-level auditory processing and if its efficacy would extend to early-phase psychosis. We addressed these issues with a randomized, double-blind study of a small sample (N=15) of early psychosis (EP) patients and 18 healthy controls from whom AEPs were recorded during an active, auditory oddball task. Patients were recorded twice: once prior to NAC/placebo administration and once after six months of treatment. The N100 component was significantly smaller in patients before NAC administration versus controls. Critically, NAC administration improved this AEP deficit. Source estimations revealed increased activity in the left temporo-parietal lobe in patients after NAC administration. Overall, the data from this pilot study, which call for replication in a larger sample, indicate that NAC improves low-level auditory processing in early psychosis.
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Affiliation(s)
- Chrysa Retsa
- The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Neuropsychology and Neurorehabilitation Service and Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Jean-François Knebel
- The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Neuropsychology and Neurorehabilitation Service and Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; The EEG Brain Mapping Core, Center for Biomedical Imaging (CIBM), University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Eveline Geiser
- The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Neuropsychology and Neurorehabilitation Service and Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Carina Ferrari
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Raoul Jenni
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Margot Fournier
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Luis Alameda
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Psychiatric Liaison Service, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Philipp S Baumann
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Stephanie Clarke
- The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Neuropsychology and Neurorehabilitation Service and Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Philippe Conus
- Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Kim Q Do
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Micah M Murray
- The LINE (Laboratory for Investigative Neurophysiology), Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Neuropsychology and Neurorehabilitation Service and Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; The EEG Brain Mapping Core, Center for Biomedical Imaging (CIBM), University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Department of Ophthalmology, University of Lausanne, Fondation Asile des Aveugles, Lausanne, Switzerland; Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, USA.
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Geiser E, Retsa C, Knebel JF, Ferrari C, Jenni R, Fournier M, Alameda L, Baumann PS, Clarke S, Conus P, Do KQ, Murray MM. The coupling of low-level auditory dysfunction and oxidative stress in psychosis patients. Schizophr Res 2017; 190:52-59. [PMID: 28189532 DOI: 10.1016/j.schres.2017.02.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/30/2017] [Accepted: 02/01/2017] [Indexed: 02/08/2023]
Abstract
Patients diagnosed with schizophrenia often present with low-level sensory deficits. It is an open question whether there is a functional link between these deficits and the pathophysiology of the disease, e.g. oxidative stress and glutathione (GSH) metabolism dysregulation. Auditory evoked potentials (AEPs) were recorded from 21 psychosis disorder patients and 30 healthy controls performing an active, auditory oddball task. AEPs to standard sounds were analyzed within an electrical neuroimaging framework. A peripheral measure of participants' redox balance, the ratio of glutathione peroxidase and glutathione reductase activities (GPx/GR), was correlated with the AEP data. Patients displayed significantly decreased AEPs over the time window of the P50/N100 complex resulting from significantly weaker responses in the left temporo-parietal lobe. The GPx/GR ratio significantly correlated with patients' brain activity during the time window of the P50/N100 in the medial frontal lobe. We show for the first time a direct coupling between electrophysiological indices of AEPs and peripheral redox dysregulation in psychosis patients. This coupling is limited to stages of auditory processing that are impaired relative to healthy controls and suggests a link between biochemical and sensory dysfunction. The data highlight the potential of low-level sensory processing as a trait-marker of psychosis.
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Affiliation(s)
- Eveline Geiser
- Neuropsychology and Neurorehabilitation Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Chrysa Retsa
- Neuropsychology and Neurorehabilitation Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Jean-François Knebel
- Neuropsychology and Neurorehabilitation Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; The EEG Brain Mapping Core, Center for Biomedical Imaging (CIBM), University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Carina Ferrari
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Raoul Jenni
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Margot Fournier
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Luis Alameda
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Psychiatric Liaison Service, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Philipp S Baumann
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland; Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Stephanie Clarke
- Neuropsychology and Neurorehabilitation Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland
| | - Philippe Conus
- Service of General Psychiatry, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Kim Q Do
- Center for Psychiatric Neuroscience, Department of Psychiatry, University Hospital Center and University of Lausanne, Prilly-Lausanne, Switzerland
| | - Micah M Murray
- Neuropsychology and Neurorehabilitation Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Radiodiagnostic Service, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; The EEG Brain Mapping Core, Center for Biomedical Imaging (CIBM), University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; Psychiatric Liaison Service, Lausanne University Hospital (CHUV), Lausanne, Switzerland; Department of Ophthalmology, University of Lausanne, Jules-Gonin Eye Hospital, Lausanne, Switzerland; Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, USA.
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Abstract
Diagnosing heart conditions by auscultation is an important clinical skill commonly learnt by medical students. Clinical proficiency for this skill is in decline [1], and new teaching methods are needed. Successful discrimination of heartbeat sounds is believed to benefit mainly from acoustical training [2]. From recent studies of auditory training [3,4] we hypothesized that semantic representations outside the auditory cortex contribute to diagnostic accuracy in cardiac auscultation. To test this hypothesis, we analysed auditory evoked potentials (AEPs) which were recorded from medical students while they diagnosed quadruplets of heartbeat cycles. The comparison of trials with correct (Hits) versus incorrect diagnosis (Misses) revealed a significant difference in brain activity at 280-310 ms after the onset of the second cycle within the left middle frontal gyrus (MFG) and the right prefrontal cortex. This timing and locus suggest that semantic rather than acoustic representations contribute critically to auscultation skills. Thus, teaching auscultation should emphasize the link between the heartbeat sound and its meaning. Beyond cardiac auscultation, this issue is of interest for all fields where subtle but complex perceptual differences identify items in a well-known semantic context.
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Affiliation(s)
- Rosanna De Meo
- Service of Neuropsychology and Neurorehabilitation, Department of Clinical Neuroscience, CHUV, Switzerland
| | - Pawel J Matusz
- The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, CHUV, Switzerland
| | - Jean-François Knebel
- Service of Neuropsychology and Neurorehabilitation, Department of Clinical Neuroscience, CHUV, Switzerland; The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, CHUV, Switzerland; Department of Ophthalmology, Jules-Gonin Eye Hospital, Lausanne, Switzerland
| | - Micah M Murray
- Service of Neuropsychology and Neurorehabilitation, Department of Clinical Neuroscience, CHUV, Switzerland; The Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, CHUV, Switzerland; EEG Brain Mapping Core, Center for Biomedical Imaging (CIBM), Switzerland; Department of Ophthalmology, Jules-Gonin Eye Hospital, Lausanne, Switzerland
| | - W Reid Thompson
- Division of Pediatric Cardiology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Stephanie Clarke
- Service of Neuropsychology and Neurorehabilitation, Department of Clinical Neuroscience, CHUV, Switzerland.
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Marot A, Henrion J, Knebel JF, Moreno C, Deltenre P. Alcoholic liver disease confers a worse prognosis than HCV infection and non-alcoholic fatty liver disease among patients with cirrhosis: An observational study. PLoS One 2017; 12:e0186715. [PMID: 29077714 PMCID: PMC5659599 DOI: 10.1371/journal.pone.0186715] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/08/2017] [Indexed: 02/07/2023] Open
Abstract
Background Cirrhosis is a heterogeneous clinical condition that includes patients at wide-ranging stages of severity. The role of the underlying liver disease on patient prognosis remains unclear. Aim To assess the impact of the underlying liver disease on the occurrence of hepatocellular carcinoma (HCC) and death. Methods Data related to the occurrence of HCC and death were collected during a 21-year period among patients with cirrhosis related to alcoholic liver disease (ALD) (n = 529), chronic hepatitis C virus (HCV) infection (n = 145) or non-alcoholic fatty liver disease (NAFLD) (n = 78). Results At inclusion, ALD patients were younger than HCV and NAFLD patients (56 vs. 67 vs. 63 years; p<0.001) and had worse liver function (percent of patients with Child-Pugh stages B or C: 48% vs. 8% vs. 17%; p<0.001). During follow-up, 85 patients developed HCC and 379 died. The 10-year cumulative incidence rate of HCC was lower in ALD patients than in HCV and NAFLD patients (8.4% vs. 22.0% vs. 23.7%; p<0.001). The 10-year cumulative incidence rates of mortality were not statistically different between ALD, HCV and NAFLD patients (58.1% vs. 47.7% vs. 49.9%; p = 0.078). Alcohol abstinence and viral eradication were associated with reduced mortality among ALD and HCV patients, respectively. In multivariate analyses, ALD was associated with a reduced risk of HCC (0.39; 95% CI, 0.20–0.76; p = 0.005) but with a higher risk of mortality (1.53; 95% CI, 1.20–1.95; p<0.001). ALD patients died more frequently from decompensation of cirrhosis. Conclusion Despite a lower incidence of HCC, patients with ALD-related cirrhosis have a worse outcome than those with chronic HCV infection or NAFLD-related cirrhosis.
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Affiliation(s)
- Astrid Marot
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland
| | - Jean Henrion
- Division of Gastroenterology and Hepatology, Centres hospitaliers de Jolimont, Haine-Saint-Paul, Belgium
| | - Jean-François Knebel
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland
- EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Christophe Moreno
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Pierre Deltenre
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
- * E-mail:
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Vietti VN, Duran R, Guiu B, Aubé C, Cercueil JP, Bize P, Pache I, Deltenre P, Knebel JF, Denys A. Microwave ablation and radiofrequency ablation for the treatment of hepatocellular carcinoma: Result of the first prospective randomized controlled trial. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx263.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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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Deltenre P, Marot A, Knebel JF, Doerig C, Henrion J, Moreno C. Effect of abstinence on the prognosis of patients with alcoholic liver disease: A word of caution. J Hepatol 2017; 66:1329-1330. [PMID: 28263779 DOI: 10.1016/j.jhep.2017.02.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/20/2017] [Indexed: 12/04/2022]
Affiliation(s)
- Pierre Deltenre
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland; Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium.
| | - Astrid Marot
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Jean-François Knebel
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland; EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Christopher Doerig
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Jean Henrion
- Departement of Gastroenterology and Hepatology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - Christophe Moreno
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium; Laboratory of Experimental Gastroenterology, Université Libre de Bruxelles, Brussels, Belgium
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Marot A, Vandenbulcke H, Knebel JF, Doerig C, Moreno C, Deltenre P. External validation of the nomogram for individualized prediction of hepatocellular carcinoma occurrence in patients with hepatitis C virus-related compensated cirrhosis. Hepatology 2017; 65:1419-1421. [PMID: 27737519 DOI: 10.1002/hep.28865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 10/12/2016] [Indexed: 12/07/2022]
Affiliation(s)
- Astrid Marot
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Hélène Vandenbulcke
- Departement of Gastroenterology and Hepatology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - Jean-François Knebel
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center and University of Lausanne, Lausanne, Switzerland.,EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM), Lausanne, Switzerland
| | - Christopher Doerig
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Christophe Moreno
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Pierre Deltenre
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.,Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
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Cogné M, Knebel JF, Klinger E, Bindschaedler C, Rapin PA, Joseph PA, Clarke S. The effect of contextual auditory stimuli on virtual spatial navigation in patients with focal hemispheric lesions. Neuropsychol Rehabil 2016; 28:1-16. [PMID: 27653552 DOI: 10.1080/09602011.2015.1127260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Topographical disorientation is a frequent deficit among patients suffering from brain injury. Spatial navigation can be explored in this population using virtual reality environments, even in the presence of motor or sensory disorders. Furthermore, the positive or negative impact of specific stimuli can be investigated. We studied how auditory stimuli influence the performance of brain-injured patients in a navigational task, using the Virtual Action Planning-Supermarket (VAP-S) with the addition of contextual ("sonar effect" and "name of product") and non-contextual ("periodic randomised noises") auditory stimuli. The study included 22 patients with a first unilateral hemispheric brain lesion and 17 healthy age-matched control subjects. After a software familiarisation, all subjects were tested without auditory stimuli, with a sonar effect or periodic random sounds in a random order, and with the stimulus "name of product". Contextual auditory stimuli improved patient performance more than control group performance. Contextual stimuli benefited most patients with severe executive dysfunction or with severe unilateral neglect. These results indicate that contextual auditory stimuli are useful in the assessment of navigational abilities in brain-damaged patients and that they should be used in rehabilitation paradigms.
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Affiliation(s)
- Mélanie Cogné
- a Rehabilitation Medicine Unit and EA4136, University of Bordeaux , Bordeaux , France
| | - Jean-François Knebel
- b Neuropsychology and Neurorehabilitation Service, Centre Hospitalier Universitaire Vaudois (CHUV) , Lausanne , Switzerland.,c Department of Radiology and Department of Clinical Neurosciences , Laboratory for Investigative Neurophysiology (The LINE), University Hospital Center and University of Lausanne , Lausanne , Switzerland.,d EEG Brain Brain Mapping Core, Centre for Biomedical Imaging (CIBM) , Lausanne , Switzerland
| | - Evelyne Klinger
- e Digital Interactions Health and Disability Lab, ESIEA , Laval , France.,f French Institute for Research on Handicap , Paris , France
| | - Claire Bindschaedler
- b Neuropsychology and Neurorehabilitation Service, Centre Hospitalier Universitaire Vaudois (CHUV) , Lausanne , Switzerland
| | | | - Pierre-Alain Joseph
- a Rehabilitation Medicine Unit and EA4136, University of Bordeaux , Bordeaux , France.,f French Institute for Research on Handicap , Paris , France
| | - Stephanie Clarke
- b Neuropsychology and Neurorehabilitation Service, Centre Hospitalier Universitaire Vaudois (CHUV) , Lausanne , Switzerland
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Vandenbulcke H, Moreno C, Colle I, Knebel JF, Francque S, Sersté T, George C, de Galocsy C, Laleman W, Delwaide J, Orlent H, Lasser L, Trépo E, Van Vlierberghe H, Michielsen P, van Gossum M, de Vos M, Marot A, Doerig C, Henrion J, Deltenre P. Alcohol intake increases the risk of HCC in hepatitis C virus-related compensated cirrhosis: A prospective study. J Hepatol 2016; 65:543-51. [PMID: 27180899 DOI: 10.1016/j.jhep.2016.04.031] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 04/05/2016] [Accepted: 04/27/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Whether alcohol intake increases the risk of complications in patients with HCV-related cirrhosis remains unclear. The aim of this study was to determine the impact of alcohol intake and viral eradication on the risk of hepatocellular carcinoma (HCC), decompensation of cirrhosis and death. METHODS Data on alcohol intake and viral eradication were prospectively collected in 192 patients with compensated HCV-related cirrhosis. RESULTS 74 patients consumed alcohol (median alcohol intake: 15g/day); 68 reached viral eradication. During a median follow-up of 58months, 33 patients developed HCC, 53 experienced at least one decompensation event, and 39 died. The 5-year cumulative incidence rate of HCC was 10.6% (95% CI: 4.6-16.6) in abstainers vs. 23.8% (95% CI: 13.5-34.1) in consumers (p=0.087), and 2.0% (95% CI: 0-5.8) vs. 21.7% (95% CI: 14.2-29.2) in patients with and without viral eradication (p=0.002), respectively. The lowest risk of HCC was observed for patients without alcohol intake and with viral eradication (0%) followed by patients with alcohol intake and viral eradication (6.2% [95% CI: 0-18.4]), patients without alcohol intake and no viral eradication (15.9% [95% CI: 7.1-24.7]), and patients with alcohol intake and no viral eradication (29.2% [95% CI: 16.5-41.9]) (p=0.009). In multivariate analysis, lack of viral eradication and alcohol consumption were associated with the risk of HCC (hazard ratio for alcohol consumption: 3.43, 95% CI: 1.49-7.92, p=0.004). Alcohol intake did not influence the risk of decompensation or death. CONCLUSIONS Light-to-moderate alcohol intake increases the risk of HCC in patients with HCV-related cirrhosis. Patient care should include measures to ensure abstinence. LAY SUMMARY Whether alcohol intake increases the risk of complications in patients with HCV-related cirrhosis remains unclear. In this prospective study, light-to-moderate alcohol intake was associated with the risk of hepatocellular carcinoma in multivariate analysis. No patients who did not use alcohol and who reached viral eradication developed hepatocellular carcinoma during follow-up. The risk of hepatocellular carcinoma increased with alcohol intake or in patients without viral eradication and was highest when alcohol intake was present in the absence of viral eradication. Patients with HCV-related cirrhosis should be strongly advised against any alcohol intake. Patient care should include measures to ensure abstinence.
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Affiliation(s)
- Hélène Vandenbulcke
- Departement of Gastroenterology and Hepatology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - Christophe Moreno
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Isabelle Colle
- Departement of Gastroenterology and Hepatology, Ghent University Hospital, Ghent, Belgium
| | - Jean-François Knebel
- Laboratory for Investigative Neurophysiology (The LINE), Department of Radiology and Department of Clinical Neurosciences, University Hospital Center and University of Lausanne, 1011 Lausanne, Switzerland; EEG Brain Mapping Core, Centre for Biomedical Imaging (CIBM), 1011 Lausanne, Switzerland
| | - Sven Francque
- Departement of Gastroenterology and Hepatology, UZ Antwerpen, Edegem, Belgium
| | - Thomas Sersté
- Departement of Gastroenterology and Hepatology, CHU Saint-Pierre, Brussels, Belgium
| | - Christophe George
- Departement of Gastroenterology and Hepatology, AZ Groeninge, Kortrijk, Belgium
| | - Chantal de Galocsy
- Departement of Gastroenterology and Hepatology, Hôpitaux Iris Sud Bracops, Brussels, Belgium
| | - Wim Laleman
- Departement of Gastroenterology and Hepatology, KUL, Leuven, Belgium
| | - Jean Delwaide
- Departement of Gastroenterology and Hepatology, CHU Liège, Liège, Belgium
| | - Hans Orlent
- Departement of Gastroenterology and Hepatology, AZ St Jan, Brugge, Belgium
| | - Luc Lasser
- Departement of Gastroenterology and Hepatology, CHU Brugmann, Brussels, Belgium
| | - Eric Trépo
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Hans Van Vlierberghe
- Departement of Gastroenterology and Hepatology, Ghent University Hospital, Ghent, Belgium
| | - Peter Michielsen
- Departement of Gastroenterology and Hepatology, UZ Antwerpen, Edegem, Belgium
| | - Marc van Gossum
- Departement of Gastroenterology and Hepatology, CHU Saint-Pierre, Brussels, Belgium
| | - Marie de Vos
- Departement of Gastroenterology and Hepatology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - Astrid Marot
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Christopher Doerig
- Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Jean Henrion
- Departement of Gastroenterology and Hepatology, Hôpital de Jolimont, Haine-Saint-Paul, Belgium
| | - Pierre Deltenre
- Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium; Division of Gastroenterology and Hepatology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland.
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Anken J, Knebel JF, Crottaz-Herbette S, Matusz PJ, Lefebvre J, Murray MM. Cue-dependent circuits for illusory contours in humans. Neuroimage 2016; 129:335-344. [DOI: 10.1016/j.neuroimage.2016.01.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/22/2015] [Accepted: 01/22/2016] [Indexed: 10/22/2022] Open
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Da Costa S, Bourquin NMP, Knebel JF, Saenz M, van der Zwaag W, Clarke S. Representation of Sound Objects within Early-Stage Auditory Areas: A Repetition Effect Study Using 7T fMRI. PLoS One 2015; 10:e0124072. [PMID: 25938430 PMCID: PMC4418571 DOI: 10.1371/journal.pone.0124072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 02/25/2015] [Indexed: 11/26/2022] Open
Abstract
Environmental sounds are highly complex stimuli whose recognition depends on the interaction of top-down and bottom-up processes in the brain. Their semantic representations were shown to yield repetition suppression effects, i. e. a decrease in activity during exposure to a sound that is perceived as belonging to the same source as a preceding sound. Making use of the high spatial resolution of 7T fMRI we have investigated the representations of sound objects within early-stage auditory areas on the supratemporal plane. The primary auditory cortex was identified by means of tonotopic mapping and the non-primary areas by comparison with previous histological studies. Repeated presentations of different exemplars of the same sound source, as compared to the presentation of different sound sources, yielded significant repetition suppression effects within a subset of early-stage areas. This effect was found within the right hemisphere in primary areas A1 and R as well as two non-primary areas on the antero-medial part of the planum temporale, and within the left hemisphere in A1 and a non-primary area on the medial part of Heschl’s gyrus. Thus, several, but not all early-stage auditory areas encode the meaning of environmental sounds.
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Affiliation(s)
- Sandra Da Costa
- Service de Neuropsychologie et de Neuroréhabilitation, Département des Neurosciences Cliniques, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland
- * E-mail:
| | - Nathalie M.-P. Bourquin
- Service de Neuropsychologie et de Neuroréhabilitation, Département des Neurosciences Cliniques, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland
| | - Jean-François Knebel
- National Center of Competence in Research, SYNAPSY—The Synaptic Bases of Mental Diseases, Service de Neuropsychologie et de Neuroréhabilitation, Département des Neurosciences Cliniques, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland
| | - Melissa Saenz
- Laboratoire de Recherche en Neuroimagerie, Département des Neurosciences Cliniques, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland
| | - Wietske van der Zwaag
- Centre d’Imagerie BioMédicale, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Stephanie Clarke
- Service de Neuropsychologie et de Neuroréhabilitation, Département des Neurosciences Cliniques, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland
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Coppo S, Firsova M, Locca D, Knebel JF, van Heeswijk RB, Stuber M. Repositioning precision of coronary arteries measured on X-ray angiography and its implications for coronary MR angiography. J Magn Reson Imaging 2014; 41:1251-8. [DOI: 10.1002/jmri.24685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/11/2014] [Accepted: 06/11/2014] [Indexed: 11/08/2022] Open
Affiliation(s)
- Simone Coppo
- Center for Biomedical Imaging (CIBM); Lausanne Switzerland
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
| | - Maria Firsova
- Center for Biomedical Imaging (CIBM); Lausanne Switzerland
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
| | - Didier Locca
- Department of Cardiology; University Hospital (CHUV); Lausanne Switzerland
- Barts and The London Chest Hospital; Queen Mary University London; London United Kingdom
| | - Jean-François Knebel
- Neuropsychology and Neurorehabilitation Service, DNC; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
- NCCR “SYNAPSY - The Synaptic Bases of Mental Diseases”; Lausanne Switzerland
| | - Ruud B. van Heeswijk
- Center for Biomedical Imaging (CIBM); Lausanne Switzerland
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
| | - Matthias Stuber
- Center for Biomedical Imaging (CIBM); Lausanne Switzerland
- Department of Radiology; University Hospital (CHUV) and University of Lausanne (UNIL); Lausanne Switzerland
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He BJ, Nolte G, Nagata K, Takano D, Yamazaki T, Fujimaki Y, Maeda T, Satoh Y, Heckers S, George MS, Lopes da Silva F, de Munck JC, Van Houdt PJ, Verdaasdonk RM, Ossenblok P, Mullinger K, Bowtell R, Bagshaw AP, Keeser D, Karch S, Segmiller F, Hantschk I, Berman A, Padberg F, Pogarell O, Scharnowski F, Karch S, Hümmer S, Keeser D, Paolini M, Kirsch V, Koller G, Rauchmann B, Kupka M, Blautzik J, Pogarell O, Razavi N, Jann K, Koenig T, Kottlow M, Hauf M, Strik W, Dierks T, Gotman J, Vulliemoz S, Lu Y, Zhang H, Yang L, Worrell G, He B, Gruber O, Piguet C, Hubl D, Homan P, Kindler J, Dierks T, Kim K, Steinhoff U, Wakai R, Koenig T, Kottlow M, Melie-García L, Mucci A, Volpe U, Prinster A, Salvatore M, Galderisi S, Linden DEJ, Brandeis D, Schroeder CE, Kayser C, Panzeri S, Kleinschmidt A, Ritter P, Walther S, Haueisen J, Lau S, Flemming L, Sonntag H, Maess B, Knösche TR, Lanfer B, Dannhauer M, Wolters CH, Stenroos M, Haueisen J, Wolters C, Aydin U, Lanfer B, Lew S, Lucka F, Ruthotto L, Vorwerk J, Wagner S, Ramon C, Guan C, Ang KK, Chua SG, Kuah WK, Phua KS, Chew E, Zhou H, Chuang KH, Ang BT, Wang C, Zhang H, Yang H, Chin ZY, Yu H, Pan Y, Collins L, Mainsah B, Colwell K, Morton K, Ryan D, Sellers E, Caves K, Throckmorton S, Kübler A, Holz EM, Zickler C, Sellers E, Ryan D, Brown K, Colwell K, Mainsah B, Caves K, Throckmorton S, Collins L, Wennberg R, Ahlfors SP, Grova C, Chowdhury R, Hedrich T, Heers M, Zelmann R, Hall JA, Lina JM, Kobayashi E, Oostendorp T, van Dam P, Oosterhof P, Linnenbank A, Coronel R, van Dessel P, de Bakker J, Rossion B, Jacques C, Witthoft N, Weiner KS, Foster BL, Miller KJ, Hermes D, Parvizi J, Grill-Spector K, Recanzone GH, Murray MM, Haynes JD, Richiardi J, Greicius M, De Lucia M, Müller KR, Formisano E, Smieskova R, Schmidt A, Bendfeldt K, Walter A, Riecher-Rössler A, Borgwardt S, Fusar-Poli P, Eliez S, Schmidt A, Sekihara K, Nagarajan SS, Schoffelen JM, Guggisberg AG, Nolte G, Balazs S, Kermanshahi K, Kiesenhofer W, Binder H, Rattay F, Antal A, Chaieb L, Paulus W, Bodis-Wollner I, Maurer K, Fein G, Camchong J, Johnstone J, Cardenas-Nicolson V, Fiederer LDJ, Lucka F, Yang S, Vorwerk J, Dümpelmann M, Cosandier-Rimélé D, Schulze-Bonhage A, Aertsen A, Speck O, Wolters CH, Ball T, Fuchs M, Wagner M, Kastner J, Tech R, Dinh C, Haueisen J, Baumgarten D, Hämäläinen MS, Lau S, Vogrin SJ, D'Souza W, Haueisen J, Cook MJ, Custo A, Van De Ville D, Vulliemoz S, Grouiller F, Michel CM, Malmivuo J, Aydin U, Vorwerk J, Küpper P, Heers M, Kugel H, Wellmer J, Kellinghaus C, Scherg M, Rampp S, Wolters C, Storti SF, Boscolo Galazzo I, Del Felice A, Pizzini FB, Arcaro C, Formaggio E, Mai R, Manganotti P, Koessler L, Vignal J, Cecchin T, Colnat-Coulbois S, Vespignani H, Ramantani G, Maillard L, Rektor I, Kuba R, Brázdil M, Chrastina J, Rektorova I, van Mierlo P, Carrette E, Strobbe G, Montes-Restrepo V, Vonck K, Vandenberghe S, Ahmed B, Brodely C, Carlson C, Kuzniecky R, Devinsky O, French J, Thesen T, Bénis D, David O, Lachaux JP, Seigneuret E, Krack P, Fraix V, Chabardès S, Bastin J, Jann K, Gee D, Kilroy E, Cannon T, Wang DJ, Hale JR, Mayhew SD, Przezdzik I, Arvanitis TN, Bagshaw AP, Plomp G, Quairiaux C, Astolfi L, Michel CM, Mayhew SD, Mullinger KJ, Bagshaw AP, Bowtell R, Francis ST, Schouten AC, Campfens SF, van der Kooij H, Koles Z, Lind J, Flor-Henry P, Wirth M, Haase CM, Villeneuve S, Vogel J, Jagust WJ, Kambeitz-Ilankovic L, Simon-Vermot L, Gesierich B, Duering M, Ewers M, Rektorova I, Krajcovicova L, Marecek R, Mikl M, Bracht T, Horn H, Strik W, Federspiel A, Schnell S, Höfle O, Stegmayer K, Wiest R, Dierks T, Müller TJ, Walther S, Surmeli T, Ertem A, Eralp E, Kos IH, Skrandies W, Flüggen S, Klein A, Britz J, Díaz Hernàndez L, Ro T, Michel CM, Lenartowicz A, Lau E, Rodriguez C, Cohen MS, Loo SK, Di Lorenzo G, Pagani M, Monaco L, Daverio A, Giannoudas I, La Porta P, Verardo AR, Niolu C, Fernandez I, Siracusano A, Flor-Henry P, Lind J, Koles Z, Bollmann S, Ghisleni C, O'Gorman R, Poil SS, Klaver P, Michels L, Martin E, Ball J, Eich-Höchli D, Brandeis D, Salisbury DF, Murphy TK, Butera CD, Mathalon DH, Fryer SL, Kiehl KA, Calhoun VC, Pearlson GD, Roach BJ, Ford JM, McGlashan TH, Woods SW, Volpe U, Merlotti E, Vignapiano A, Montefusco V, Plescia GM, Gallo O, Romano P, Mucci A, Galderisi S, Mingoia G, Langbein K, Dietzek M, Wagner G, Smesny, Scherpiet S, Maitra R, Gaser C, Sauer H, Nenadic I, Gonzalez Andino S, Grave de Peralta Menendez R, Grave de Peralta Menendez R, Sanchez Vives M, Rebollo B, Gonzalez Andino S, Frølich L, Andersen TS, Mørup M, Belfiore P, Gargiulo P, Ramon C, Vanhatalo S, Cho JH, Vorwerk J, Wolters CH, Knösche TR, Watanabe T, Kawabata Y, Ukegawa D, Kawabata S, Adachi Y, Sekihara K, Sekihara K, Nagarajan SS, Wagner S, Aydin U, Vorwerk J, Herrmann C, Burger M, Wolters C, Lucka F, Aydin U, Vorwerk J, Burger M, Wolters C, Bauer M, Trahms L, Sander T, Faber PL, Lehmann D, Gianotti LRR, Pascual-Marqui RD, Milz P, Kochi K, Kaneko S, Yamashita S, Yana K, Kalogianni K, Vardy AN, Schouten AC, van der Helm FCT, Sorrentino A, Luria G, Aramini R, Hunold A, Funke M, Eichardt R, Haueisen J, Gómez-Aguilar F, Vázquez-Olvera S, Cordova-Fraga T, Castro-López J, Hernández-Gonzalez MA, Solorio-Meza S, Sosa-Aquino M, Bernal-Alvarado JJ, Vargas-Luna M, Vorwerk J, Magyari L, Ludewig J, Oostenveld R, Wolters CH, Vorwerk J, Engwer C, Ludewig J, Wolters C, Sato K, Nishibe T, Furuya M, Yamashiro K, Yana K, Ono T, Puthanmadam Subramaniyam N, Hyttinen J, Lau S, Güllmar D, Flemming L, Haueisen J, Sonntag H, Vorwerk J, Wolters CH, Grasedyck L, Haueisen J, Maeß B, Freitag S, Graichen U, Fiedler P, Strohmeier D, Haueisen J, Stenroos M, Hauk O, Grigutsch M, Felber M, Maess B, Herrmann B, Strobbe G, van Mierlo P, Vandenberghe S, Strobbe G, Cárdenas-Peña D, Montes-Restrepo V, van Mierlo P, Castellanos-Dominguez G, Vandenberghe S, Lanfer B, Paul-Jordanov I, Scherg M, Wolters CH, Ito Y, Sato D, Kamada K, Kobayashi T, Dalal SS, Rampp S, Willomitzer F, Arold O, Fouladi-Movahed S, Häusler G, Stefan H, Ettl S, Zhang S, Zhang Y, Li H, Kong X, Montes-Restrepo V, Strobbe G, van Mierlo P, Vandenberghe S, Wong DDE, Bidet-Caulet A, Knight RT, Crone NE, Dalal SS, Birot G, Spinelli L, Vulliémoz S, Seeck M, Michel CM, Emory H, Wells C, Mizrahi N, Vogrin SJ, Lau S, Cook MJ, Karahanoglu FI, Grouiller F, Caballero-Gaudes C, Seeck M, Vulliemoz S, Van De Ville D, Spinelli L, Megevand P, Genetti M, Schaller K, Michel C, Vulliemoz S, Seeck M, Genetti M, Tyrand R, Grouiller F, Vulliemoz S, Spinelli L, Seeck M, Schaller K, Michel CM, Grouiller F, Heinzer S, Delattre B, Lazeyras F, Spinelli L, Pittau F, Seeck M, Ratib O, Vargas M, Garibotto V, Vulliemoz S, Vogrin SJ, Bailey CA, Kean M, Warren AE, Davidson A, Seal M, Harvey AS, Archer JS, Papadopoulou M, Leite M, van Mierlo P, Vonck K, Boon P, Friston K, Marinazzo D, Ramon C, Holmes M, Koessler L, Rikir E, Gavaret M, Bartolomei F, Vignal JP, Vespignani H, Maillard L, Centeno M, Perani S, Pier K, Lemieux L, Clayden J, Clark C, Pressler R, Cross H, Carmichael DW, Spring A, Bessemer R, Pittman D, Aghakhani Y, Federico P, Pittau F, Grouiller F, Vulliémoz S, Gotman J, Badier JM, Bénar CG, Bartolomei F, Cruto C, Chauvel P, Gavaret M, Brodbeck V, van Leeuwen T, Tagliazzuchi E, Melloni L, Laufs H, Griskova-Bulanova I, Dapsys K, Klein C, Hänggi J, Jäncke L, Ehinger BV, Fischer P, Gert AL, Kaufhold L, Weber F, Marchante Fernandez M, Pipa G, König P, Sekihara K, Hiyama E, Koga R, Iannilli E, Michel CM, Bartmuss AL, Gupta N, Hummel T, Boecker R, Holz N, Buchmann AF, Blomeyer D, Plichta MM, Wolf I, Baumeister S, Meyer-Lindenberg A, Banaschewski T, Brandeis D, Laucht M, Natahara S, Ueno M, Kobayashi T, Kottlow M, Bänninger A, Koenig T, Schwab S, Koenig T, Federspiel A, Dierks T, Jann K, Natsukawa H, Kobayashi T, Tüshaus L, Koenig T, Kottlow M, Achermann P, Wilson RS, Mayhew SD, Assecondi S, Arvanitis TN, Bagshaw AP, Darque A, Rihs TA, Grouiller F, Lazeyras F, Ha-Vinh Leuchter R, Caballero C, Michel CM, Hüppi PS, Hauser TU, Hunt LT, Iannaccone R, Stämpfli P, Brandeis D, Dolan RJ, Walitza S, Brem S, Graichen U, Eichardt R, Fiedler P, Strohmeier D, Freitag S, Zanow F, Haueisen J, Lordier L, Grouiller F, Van de Ville D, Sancho Rossignol A, Cordero I, Lazeyras F, Ansermet F, Hüppi P, Schläpfer A, Rubia K, Brandeis D, Di Lorenzo G, Pagani M, Monaco L, Daverio A, Giannoudas I, Verardo AR, La Porta P, Niolu C, Fernandez I, Siracusano A, Tamura K, Karube C, Mizuba T, Matsufuji M, Takashima S, Iramina K, Assecondi S, Ostwald D, Bagshaw AP, Marecek R, Brazdil M, Lamos M, Slavícek T, Marecek R, Jan J, Meier NM, Perrig W, Koenig T, Minami T, Noritake Y, Nakauchi S, Azuma K, Minami T, Nakauchi S, Rodriguez C, Lenartowicz A, Cohen MS, Rodriguez C, Lenartowicz A, Cohen MS, Iramina K, Kinoshita H, Tamura K, Karube C, Kaneko M, Ide J, Noguchi Y, Cohen MS, Douglas PK, Rodriguez CM, Xia HJ, Zimmerman EM, Konopka CJ, Epstein PS, Konopka LM, Giezendanner S, Fisler M, Soravia L, Andreotti J, Wiest R, Dierks T, Federspiel A, Razavi N, Federspiel A, Dierks T, Hauf M, Jann K, Kamada K, Sato D, Ito Y, Okano K, Mizutani N, Kobayashi T, Thelen A, Murray M, Pastena L, Formaggio E, Storti SF, Faralli F, Melucci M, Gagliardi R, Ricciardi L, Ruffino G, Coito A, Macku P, Tyrand R, Astolfi L, He B, Wiest R, Seeck M, Michel C, Plomp G, Vulliemoz S, Fischmeister FPS, Glaser J, Schöpf V, Bauer H, Beisteiner R, Deligianni F, Centeno M, Carmichael DW, Clayden J, Mingoia G, Langbein K, Dietzek M, Wagner G, Smesny S, Scherpiet S, Maitra R, Gaser C, Sauer H, Nenadic I, Dürschmid S, Zaehle T, Pannek H, Chang HF, Voges J, Rieger J, Knight RT, Heinze HJ, Hinrichs H, Tsatsishvili V, Cong F, Puoliväli T, Alluri V, Toiviainen P, Nandi AK, Brattico E, Ristaniemi T, Grieder M, Crinelli RM, Jann K, Federspiel A, Wirth M, Koenig T, Stein M, Wahlund LO, Dierks T, Atsumori H, Yamaguchi R, Okano Y, Sato H, Funane T, Sakamoto K, Kiguchi M, Tränkner A, Schindler S, Schmidt F, Strauß M, Trampel R, Hegerl U, Turner R, Geyer S, Schönknecht P, Kebets V, van Assche M, Goldstein R, van der Meulen M, Vuilleumier P, Richiardi J, Van De Ville D, Assal F, Wozniak-Kwasniewska A, Szekely D, Harquel S, Bougerol T, David O, Bracht T, Jones DK, Horn H, Müller TJ, Walther S, Sos P, Klirova M, Novak T, Brunovsky M, Horacek J, Bares M, Hoschl C C, Fellhauer I, Zöllner FG, Schröder J, Kong L, Essig M, Schad LR, Arrubla J, Neuner I, Hahn D, Boers F, Shah NJ, Neuner I, Arrubla J, Hahn D, Boers F, Jon Shah N, Suriya Prakash M, Sharma R, Kawaguchi H, Kobayashi T, Fiedler P, Griebel S, Biller S, Fonseca C, Vaz F, Zentner L, Zanow F, Haueisen J, Rochas V, Rihs T, Thut G, Rosenberg N, Landis T, Michel C, Moliadze V, Schmanke T, Lyzhko E, Bassüner S, Freitag C, Siniatchkin M, Thézé R, Guggisberg AG, Nahum L, Schnider A, Meier L, Friedrich H, Jann K, Landis B, Wiest R, Federspiel A, Strik W, Dierks T, Witte M, Kober SE, Neuper C, Wood G, König R, Matysiak A, Kordecki W, Sieluzycki C, Zacharias N, Heil P, Wyss C, Boers F, Arrubla J, Dammers J, Kawohl W, Neuner I, Shah NJ, Braboszcz C, Cahn RB, Levy J, Fernandez M, Delorme A, Rosas-Martinez L, Milne E, Zheng Y, Urakami Y, Kawamura K, Washizawa Y, Hiyoshi K, Cichocki A, Giroud N, Dellwo V, Meyer M, Rufener KS, Liem F, Dellwo V, Meyer M, Jones-Rounds JD, Raizada R, Staljanssens W, Strobbe G, van Mierlo P, Van Holen R, Vandenberghe S, Pefkou M, Becker R, Michel C, Hervais-Adelman A, He W, Brock J, Johnson B, Ohla K, Hitz K, Heekeren K, Obermann C, Huber T, Juckel G, Kawohl W, Gabriel D, Comte A, Henriques J, Magnin E, Grigoryeva L, Ortega JP, Haffen E, Moulin T, Pazart L, Aubry R, Kukleta M, Baris Turak B, Louvel J, Crespo-Garcia M, Cantero JL, Atienza M, Connell S, Kilborn K, Damborská A, Brázdil M, Rektor I, Kukleta M, Koberda JL, Bienkiewicz A, Koberda I, Koberda P, Moses A, Tomescu M, Rihs T, Britz J, Custo A, Grouiller F, Schneider M, Debbané M, Eliez S, Michel C, Wang GY, Kydd R, Wouldes TA, Jensen M, Russell BR, Dissanayaka N, Au T, Angwin A, O'Sullivan J, Byrne G, Silburn P, Marsh R, Mellic G, Copland D, Bänninger A, Kottlow M, Díaz Hernàndez L, Koenig T, Díaz Hernàndez L, Bänninger A, Koenig T, Hauser TU, Iannaccone R, Mathys C, Ball J, Drechsler R, Brandeis D, Walitza S, Brem S, Boeijinga PH, Pang EW, Valica T, Macdonald MJ, Oh A, Lerch JP, Anagnostou E, Di Lorenzo G, Pagani M, Monaco L, Daverio A, Verardo AR, Giannoudas I, La Porta P, Niolu C, Fernandez I, Siracusano A, Shimada T, Matsuda Y, Monkawa A, Monkawa T, Hashimoto R, Watanabe K, Kawasaki Y, Matsuda Y, Shimada T, Monkawa T, Monkawa A, Watanabe K, Kawasaki Y, Stegmayer K, Horn H, Federspiel A, Razavi N, Bracht T, Laimböck K, Strik W, Dierks T, Wiest R, Müller TJ, Walther S, Koorenhof LJ, Swithenby SJ, Martins-Mourao A, Rihs TA, Tomescu M, Song KW, Custo A, Knebel JF, Murray M, Eliez S, Michel CM, Volpe U, Merlotti E, Vignapiano A, Montefusco V, Plescia GM, Gallo O, Romano P, Mucci A, Galderisi S, Laimboeck K, Jann K, Walther S, Federspiel A, Wiest R, Strik W, Horn H. Abstracts of Presentations at the International Conference on Basic and Clinical Multimodal Imaging (BaCI), a Joint Conference of the International Society for Neuroimaging in Psychiatry (ISNIP), the International Society for Functional Source Imaging (ISFSI), the International Society for Bioelectromagnetism (ISBEM), the International Society for Brain Electromagnetic Topography (ISBET), and the EEG and Clinical Neuroscience Society (ECNS), in Geneva, Switzerland, September 5-8, 2013. Clin EEG Neurosci 2013; 44:1550059413507209. [PMID: 24368763 DOI: 10.1177/1550059413507209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- B J He
- National Institutes of Health, Bethesda, MD, USA
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Abstract
Hemodynamic imaging results have associated both gender and body weight to variation in brain responses to food-related information. However, the spatio-temporal brain dynamics of gender-related and weight-wise modulations in food discrimination still remain to be elucidated. We analyzed visual evoked potentials (VEPs) while normal-weighted men (n = 12) and women (n = 12) categorized photographs of energy-dense foods and non-food kitchen utensils. VEP analyses showed that food categorization is influenced by gender as early as 170 ms after image onset. Moreover, the female VEP pattern to food categorization co-varied with participants' body weight. Estimations of the neural generator activity over the time interval of VEP modulations (i.e. by means of a distributed linear inverse solution [LAURA]) revealed alterations in prefrontal and temporo-parietal source activity as a function of image category and participants' gender. However, only neural source activity for female responses during food viewing was negatively correlated with body-mass index (BMI) over the respective time interval. Women showed decreased neural source activity particularly in ventral prefrontal brain regions when viewing food, but not non-food objects, while no such associations were apparent in male responses to food and non-food viewing. Our study thus indicates that gender influences are already apparent during initial stages of food-related object categorization, with small variations in body weight modulating electrophysiological responses especially in women and in brain areas implicated in food reward valuation and intake control. These findings extend recent reports on prefrontal reward and control circuit responsiveness to food cues and the potential role of this reactivity pattern in the susceptibility to weight gain.
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Affiliation(s)
- Ulrike Toepel
- The Functional Electrical Neuroimaging Laboratory, Department of Clinical Neurosciences, Vaudois University Hospital Center and University of Lausanne, Lausanne, Switzerland.
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Knebel JF, Javitt DC, Murray MM. Impaired early visual response modulations to spatial information in chronic schizophrenia. Psychiatry Res 2011; 193:168-76. [PMID: 21764264 PMCID: PMC3156880 DOI: 10.1016/j.pscychresns.2011.02.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 02/10/2011] [Accepted: 02/10/2011] [Indexed: 11/18/2022]
Abstract
Early visual processing stages have been demonstrated to be impaired in schizophrenia patients and their first-degree relatives. The amplitude and topography of the P1 component of the visual evoked potential (VEP) are both affected; the latter of which indicates alterations in active brain networks between populations. At least two issues remain unresolved. First, the specificity of this deficit (and suitability as an endophenotype) has yet to be established, with evidence for impaired P1 responses in other clinical populations. Second, it remains unknown whether schizophrenia patients exhibit intact functional modulation of the P1 VEP component; an aspect that may assist in distinguishing effects specific to schizophrenia. We applied electrical neuroimaging analyses to VEPs from chronic schizophrenia patients and healthy controls in response to variation in the parafoveal spatial extent of stimuli. Healthy controls demonstrated robust modulation of the VEP strength and topography as a function of the spatial extent of stimuli during the P1 component. By contrast, no such modulations were evident at early latencies in the responses from patients with schizophrenia. Source estimations localized these deficits to the left precuneus and medial inferior parietal cortex. These findings provide insights on potential underlying low-level impairments in schizophrenia.
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Affiliation(s)
- Jean-François Knebel
- The Functional Electrical Neuroimaging Laboratory, Neuropsychology and Neurorehabilitation Service, Department of Clinical Neurosciences and Department of Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland
| | - Daniel C. Javitt
- Program in Cognitive Neuroscience and Schizophrenia, The Nathan S. Kline Institute for Psychiatric Research, Orangeburg, NY, USA
| | - Micah M. Murray
- The Functional Electrical Neuroimaging Laboratory, Neuropsychology and Neurorehabilitation Service, Department of Clinical Neurosciences and Department of Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland
- The Electroencephalography Brain Mapping Core, Center for Biomedial Imaging, Lausanne, Switzerland
- Corresponding author: Micah Murray, EEG Brain Mapping Core, Center for Biomedical Imaging, Radiology, CHUV, BH08.078, Rue du Bugnon 46, 1011 Lausanne, Switzerland, Tel : +41 21 3141321; Fax : +41 21 3141319,
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Toepel U, Knebel JF, Hudry J, le Coutre J, Murray MM. The brain tracks the energetic value in food images. Neuroimage 2008; 44:967-74. [PMID: 19013251 DOI: 10.1016/j.neuroimage.2008.10.005] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2008] [Revised: 09/23/2008] [Accepted: 10/08/2008] [Indexed: 10/21/2022] Open
Abstract
Do our brains implicitly track the energetic content of the foods we see? Using electrical neuroimaging of visual evoked potentials (VEPs) we show that the human brain can rapidly discern food's energetic value, vis à vis its fat content, solely from its visual presentation. Responses to images of high-energy and low-energy food differed over two distinct time periods. The first period, starting at approximately 165 ms post-stimulus onset, followed from modulations in VEP topography and by extension in the configuration of the underlying brain network. Statistical comparison of source estimations identified differences distributed across a wide network including both posterior occipital regions and temporo-parietal cortices typically associated with object processing, and also inferior frontal cortices typically associated with decision-making. During a successive processing stage (starting at approximately 300 ms), responses differed both topographically and in terms of strength, with source estimations differing predominantly within prefrontal cortical regions implicated in reward assessment and decision-making. These effects occur orthogonally to the task that is actually being performed and suggest that reward properties such as a food's energetic content are treated rapidly and in parallel by a distributed network of brain regions involved in object categorization, reward assessment, and decision-making.
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Affiliation(s)
- Ulrike Toepel
- Neuropsychology and Neurorehabilitation Service, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Switzerland.
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Aeschlimann M, Knebel JF, Murray MM, Clarke S. Emotional pre-eminence of human vocalizations. Brain Topogr 2008; 20:239-48. [PMID: 18347967 DOI: 10.1007/s10548-008-0051-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2007] [Accepted: 02/11/2008] [Indexed: 11/28/2022]
Abstract
Human vocalizations (HV), as well as environmental sounds, convey a wide range of information, including emotional expressions. The latter have been relatively rarely investigated, and, in particular, it is unclear if duration-controlled non-linguistic HV sequences can reliably convey both positive and negative emotional information. The aims of the present psychophysical study were: (i) to generate a battery of duration-controlled and acoustically controlled extreme valence stimuli, and (ii) to compare the emotional impact of HV with that of other environmental sounds. A set of 144 HV and other environmental sounds was selected to cover emotionally positive, negative, and neutral values. Sequences of 2 s duration were rated on Likert scales by 16 listeners along three emotional dimensions (arousal, intensity, and valence) and two non-emotional dimensions (confidence in identifying the sound source and perceived loudness). The 2 s stimuli were reliably perceived as emotionally positive, negative or neutral. We observed a linear relationship between intensity and arousal ratings and a "boomerang-shaped" intensity-valence distribution, as previously reported for longer, duration-variable stimuli. In addition, the emotional intensity ratings for HV were higher than for other environmental sounds, suggesting that HV constitute a characteristic class of emotional auditory stimuli. In addition, emotionally positive HV were more readily identified than other sounds, and emotionally negative stimuli, irrespective of their source, were perceived as louder than their positive and neutral counterparts. In conclusion, HV are a distinct emotional category of environmental sounds and they retain this emotional pre-eminence even when presented for brief periods.
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Affiliation(s)
- Mélanie Aeschlimann
- Service de Neuropsychologie et de Neuroréhabilitation, Centre Hospitalier Universitaire Vaudois (CHUV) and Université de Lausanne (UNIL), Av. Pierre Decker 5, 1011 Lausanne, Switzerland.
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Knebel JF, Toepel U, Hudry J, le Coutre J, Murray MM. Generating controlled image sets in cognitive neuroscience research. Brain Topogr 2008; 20:284-9. [PMID: 18338244 DOI: 10.1007/s10548-008-0046-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2007] [Accepted: 02/11/2008] [Indexed: 11/29/2022]
Abstract
The investigation of perceptual and cognitive functions with non-invasive brain imaging methods critically depends on the careful selection of stimuli for use in experiments. For example, it must be verified that any observed effects follow from the parameter of interest (e.g. semantic category) rather than other low-level physical features (e.g. luminance, or spectral properties). Otherwise, interpretation of results is confounded. Often, researchers circumvent this issue by including additional control conditions or tasks, both of which are flawed and also prolong experiments. Here, we present some new approaches for controlling classes of stimuli intended for use in cognitive neuroscience, however these methods can be readily extrapolated to other applications and stimulus modalities. Our approach is comprised of two levels. The first level aims at equalizing individual stimuli in terms of their mean luminance. Each data point in the stimulus is adjusted to a standardized value based on a standard value across the stimulus battery. The second level analyzes two populations of stimuli along their spectral properties (i.e. spatial frequency) using a dissimilarity metric that equals the root mean square of the distance between two populations of objects as a function of spatial frequency along x- and y-dimensions of the image. Randomized permutations are used to obtain a minimal value between the populations to minimize, in a completely data-driven manner, the spectral differences between image sets. While another paper in this issue applies these methods in the case of acoustic stimuli (Aeschlimann et al., Brain Topogr 2008), we illustrate this approach here in detail for complex visual stimuli.
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Affiliation(s)
- Jean-François Knebel
- The Functional Electrical Neuroimaging Laboratory, Neuropsychology and Neurorehabilitation Service, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland.
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