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https://www.readbyqxmd.com/read/28514787/delayed-effect-of-active-pressure-treatment-on-endolymphatic-hydrops
#1
Edoardo Covelli, Luigi Volpini, Francesca Atturo, Anna Teresa Benincasa, Chiara Filippi, Silvia Tarentini, Vania Marrone, Simonetta Monini, Annarita Vestri, Maurizio Barbara
OBJECTIVE: To identify eventual correlations between the effect of low-pressure treatment and endolymphatic hydrops in Ménière patients. MATERIAL AND METHODS: The study group consisted of subjects affected by definite Ménière disease (2015) and a severe degree of disability, who received a ventilation tube with or without a low-pressure treatment before undergoing a surgical procedure (vestibular neurectomy). After the placement of the ventilation tube, the subjects were either left alone with the tube or received 1 month of self-administered low-pressure therapy with a portable device...
May 18, 2017: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/28489723/femtosecond-laser-assisted-pterygium-surgery
#2
Matthias Fuest, Yu-Chi Liu, Minas T Coroneo, Jodhbir S Mehta
PURPOSE: Pterygium is a prevalent ocular surface disorder. Conjunctival autografting (CAG) after pterygium resection is the gold standard treatment. Thinner CAGs without Tenon tissue provide better results but are technically difficult to achieve. We report on the first femtosecond laser (FSL)-assisted pterygium surgery (FLAPS) in humans. METHODS: In a clinical trial, we treated 6 eyes of 5 patients with FLAPS. After manual removal of the pterygium, CAGs were dissected with the Ziemer Z8 at 60-μm depth and glued into the resection defect...
May 9, 2017: Cornea
https://www.readbyqxmd.com/read/28451805/role-of-bone-marrow-biopsy-in-staging-of-patients-with-classical-hodgkin-s-lymphoma-undergoing-positron-emission-tomography-computed-tomography
#3
B Puccini, L Nassi, C Minoia, S Volpetti, R Ciancia, P C Riccomagno, A Di Rocco, A Mulè, C Toldo, M C Sassone, R Guariglia, C Filì, E Finolezzi, S Falorio, S Zanon, A Furlan, G Doa, F Zaja
Several studies suggested that staging bone marrow biopsy (BMB) could be omitted in patients with classical Hodgkin's lymphoma (cHL) when a positron emission tomography/computed tomography (PET/CT) is performed at baseline.To address the concordance between BMB and PET/CT in the detection of bone marrow involvement (BMI) and the BMB role in determining the Ann Arbor stage, we retrospectively collected data on 1244 consecutive patients with cHL diagnosed from January 2007 to December 2013. One thousand eighty-five patients who had undergone both BMB and PET/CT were analyzed, comparing the Ann Arbor stage assessed with PET/CT only to that resulting from PET/CT combined with BMB...
April 28, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28450222/probiotic-treatment-protects-against-the-pro-depressant-like-effect-of-high-fat-diet-in-flinders-sensitive-line-rats
#4
Anders Abildgaard, Betina Elfving, Marianne Hokland, Sten Lund, Gregers Wegener
Major depressive disorder (MDD) is highly associated with dysmetabolic conditions, such as obesity and diabetes mellitus type 2, and the gut microbiota may interact with both disease entities. We have previously shown that a high-fat diet (HFD) exacerbated depressive-like behaviour uniquely in Flinders Sensitive Line (FSL) rats that inherently present with an increased level of depressive-like behaviour compared with Flinders Resistant Line (FRL) rats. We therefore investigated whether multispecies probiotics possessed anti-depressant-like effect in FSL rats or protected against the pro-depressant-like effect of HFD...
April 24, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28448234/leveraging-clinical-imaging-archives-for-radiomics-reliability-of-automated-methods-for-brain-volume-measurement
#5
Viraj R Adduru, Andrew M Michael, Maria Helguera, Stefi A Baum, Gregory J Moore
Purpose To validate the use of thick-section clinically acquired magnetic resonance (MR) imaging data for estimating total brain volume (TBV), gray matter (GM) volume (GMV), and white matter (WM) volume (WMV) by using three widely used automated toolboxes: SPM ( www.fil.ion.ucl.ac.uk/spm/ ), FreeSurfer ( surfer.nmr.mgh.harvard.edu ), and FSL (FMRIB software library; Oxford Centre for Functional MR Imaging of the Brain, Oxford, England, https://fsl.fmrib.ox.ac.uk/fsl ). Materials and Methods MR images from a clinical archive were used and data were deidentified...
April 27, 2017: Radiology
https://www.readbyqxmd.com/read/28441410/creating-and-parameterizing-patient-specific-deep-brain-stimulation-pathway-activation-models-using-the-hyperdirect-pathway-as-an-example
#6
Kabilar Gunalan, Ashutosh Chaturvedi, Bryan Howell, Yuval Duchin, Scott F Lempka, Remi Patriat, Guillermo Sapiro, Noam Harel, Cameron C McIntyre
BACKGROUND: Deep brain stimulation (DBS) is an established clinical therapy and computational models have played an important role in advancing the technology. Patient-specific DBS models are now common tools in both academic and industrial research, as well as clinical software systems. However, the exact methodology for creating patient-specific DBS models can vary substantially and important technical details are often missing from published reports. OBJECTIVE: Provide a detailed description of the assembly workflow and parameterization of a patient-specific DBS pathway-activation model (PAM) and predict the response of the hyperdirect pathway to clinical stimulation...
2017: PloS One
https://www.readbyqxmd.com/read/28431288/longitudinal-whole-brain-atrophy-and-ventricular-enlargement-in-nondemented-parkinson-s-disease
#7
Elijah Mak, Li Su, Guy B Williams, Michael J Firbank, Rachael A Lawson, Alison J Yarnall, Gordon W Duncan, Brit Mollenhauer, Adrian M Owen, Tien K Khoo, David J Brooks, James B Rowe, Roger A Barker, David J Burn, John T O'Brien
We investigated whole-brain atrophy and ventricular enlargement over 18 months in nondemented Parkinson's disease (PD) and examined their associations with clinical measures and baseline CSF markers. PD subjects (n = 100) were classified at baseline into those with mild cognitive impairment (MCI; PD-MCI, n = 36) and no cognitive impairment (PD-NC, n = 64). Percentage of whole-brain volume change (PBVC) and ventricular expansion over 18 months were assessed with FSL-SIENA and ventricular enlargement (VIENA) respectively...
March 16, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28426817/evaluation-of-machine-learning-algorithms-and-structural-features-for-optimal-mri-based-diagnostic-prediction-in-psychosis
#8
Raymond Salvador, Joaquim Radua, Erick J Canales-Rodríguez, Aleix Solanes, Salvador Sarró, José M Goikolea, Alicia Valiente, Gemma C Monté, María Del Carmen Natividad, Amalia Guerrero-Pedraza, Noemí Moro, Paloma Fernández-Corcuera, Benedikt L Amann, Teresa Maristany, Eduard Vieta, Peter J McKenna, Edith Pomarol-Clotet
A relatively large number of studies have investigated the power of structural magnetic resonance imaging (sMRI) data to discriminate patients with schizophrenia from healthy controls. However, very few of them have also included patients with bipolar disorder, allowing the clinically relevant discrimination between both psychotic diagnostics. To assess the efficacy of sMRI data for diagnostic prediction in psychosis we objectively evaluated the discriminative power of a wide range of commonly used machine learning algorithms (ridge, lasso, elastic net and L0 norm regularized logistic regressions, a support vector classifier, regularized discriminant analysis, random forests and a Gaussian process classifier) on main sMRI features including grey and white matter voxel-based morphometry (VBM), vertex-based cortical thickness and volume, region of interest volumetric measures and wavelet-based morphometry (WBM) maps...
2017: PloS One
https://www.readbyqxmd.com/read/28419883/feasibility-and-safety-of-foam-sclerotherapy-followed-by-a-multiple-subcutaneously-interrupt-ligation-under-local-anaesthesia-for-outpatients-with-varicose-veins
#9
Yan Sun, Xin Li, Zhong Chen, Xianlun Li, Shiyan Ren
PURPOSE: To prospectively evaluate the feasibility and safety of foam sclerotherapy and ligation (FSL) for outpatients with varicose veins under local anaesthesia. METHODS: 136 outpatients with varicose veins who were unwilling to be hospitalized underwent FSL. FSL is a technique in which the dilated varicose veins were ligated subcutaneously after foam sclerotherapy with an absorbable suture. Patients were reviewed at 1, 3, 6 and 12 months after FSL. Pain scores were recorded after FSL...
April 15, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28407315/drugs-with-antidepressant-properties-affect-tryptophan-metabolites-differently-in-rodent-models-with-depression-like-behavior
#10
Amanda Eskelund, Yan Li, David P Budac, Heidi K Müller, Gulinello Maria, Connie Sanchez, Gregers Wegener
The metabolism of tryptophan through kynurenine and serotonin pathways is linked to depression. Here, effects of different drugs with antidepressant properties (vortioxetine, fluoxetine and ketamine) on various tryptophan metabolites in different brain regions and plasma were examined using tandem mass spectrometry (LC-MS/MS), in Flinders Sensitive Line (FSL) rats, a genetic rat model of depression, and its controls: Flinders Resistant Line (FRL) and Sprague-Dawley (SD) rats. Protein levels of kynurenine pathway enzymes were measured in the brains and livers of these rat strains...
April 13, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28318985/functional-disconnection-of-thalamic-and-cerebellar-dentate-nucleus-networks-in-progressive-supranuclear-palsy-and-corticobasal-syndrome
#11
Neeraj Upadhyay, Antonio Suppa, Maria Cristina Piattella, Costanza Giannì, Matteo Bologna, Flavio Di Stasio, Nikolaos Petsas, Francesca Tona, Giovanni Fabbrini, Alfredo Berardelli, Patrizia Pantano
AIM: To assess functional rearrangement following neurodegeneration in the thalamus and dentate nucleus in patients with progressive supranuclear palsy (PSP) and corticobasal syndrome (CBS). METHODS: We recruited 19 patients with PSP, 11 with CBS and 14 healthy subjects. All the subjects underwent resting-state (rs) fMRI using a 3T system. Whole brain functional connectivity of the thalamus and dentate nucleus were calculated by means of a seed-based approach with FEAT script in FSL toolbox...
March 15, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28317230/cortical-surface-based-threshold-free-cluster-enhancement-and-cortexwise-mediation
#12
Tristram A Lett, Lea Waller, Heike Tost, Ilya M Veer, Arash Nazeri, Susanne Erk, Eva J Brandl, Katrin Charlet, Anne Beck, Sabine Vollstädt-Klein, Anne Jorde, Falk Kiefer, Andreas Heinz, Andreas Meyer-Lindenberg, M Mallar Chakravarty, Henrik Walter
Threshold-free cluster enhancement (TFCE) is a sensitive means to incorporate spatial neighborhood information in neuroimaging studies without using arbitrary thresholds. The majority of methods have applied TFCE to voxelwise data. The need to understand the relationship among multiple variables and imaging modalities has become critical. We propose a new method of applying TFCE to vertexwise statistical images as well as cortexwise (either voxel- or vertexwise) mediation analysis. Here we present TFCE_mediation, a toolbox that can be used for cortexwise multiple regression analysis with TFCE, and additionally cortexwise mediation using TFCE...
June 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28298033/diffusion-tractography-imaging-guided-frameless-linear-accelerator-stereotactic-radiosurgical-thalamotomy-for-tremor-case-report
#13
Won Kim, Justin Sharim, Stephen Tenn, Tania Kaprealian, Yvette Bordelon, Nzhde Agazaryan, Nader Pouratian
Essential tremor and Parkinson's disease-associated tremor are extremely prevalent within the field of movement disorders. The ventral intermediate (VIM) nucleus of the thalamus has been commonly used as both a neuromodulatory and neuroablative target for the treatment of these forms of tremor. With both deep brain stimulation and Gamma Knife radiosurgery, there is an abundance of literature regarding the surgical planning, targeting, and outcomes of these methodologies. To date, there have been no reports of frameless, linear accelerator (LINAC)-based thalomotomies for tremor...
February 24, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28290396/three-dimensional-visualization-of-intracranial-tumors-with-cortical-surface-and-vasculature-from-routine-mr-sequences
#14
Zafar Neyaz, Rajendra V Phadke, Vivek Singh, Chaitanya Godbole
The simultaneous three-dimensional (3D) visualization of intracranial tumors, brain structures, skull, and vessels is desired by neurosurgeons to create a clear mental picture of the anatomical orientation of the surgical field prior to the surgical intervention. Different anatomical and pathological components are usually visualized separately on different magnetic resonance (MR) sequences; however, during surgery, they are tackled simultaneously. Another problem is that most present day MR workstations enable review of two-dimensional (2D) slices only with limited postprocessing options...
March 2017: Neurology India
https://www.readbyqxmd.com/read/28269699/automated-volumetry-for-unilateral-hippocampal-sclerosis-detection-in-patients-with-temporal-lobe-epilepsy
#15
Cristina Martins, Nadia Moreira da Silva, Guilherme Silva, Verena E Rozanski, Joao Paulo Silva Cunha
Hippocampal sclerosis (HS) is the most common cause of temporal lobe epilepsy (TLE) and can be identified in magnetic resonance imaging as hippocampal atrophy and subsequent volume loss. Detecting this kind of abnormalities through simple radiological assessment could be difficult, even for experienced radiologists. For that reason, hippocampal volumetry is generally used to support this kind of diagnosis. Manual volumetry is the traditional approach but it is time consuming and requires the physician to be familiar with neuroimaging software tools...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28259781/evaluating-accuracy-of-striatal-pallidal-and-thalamic-segmentation-methods-comparing-automated-approaches-to-manual-delineation
#16
Carolina Makowski, Sophie Béland, Penelope Kostopoulos, Nikhil Bhagwat, Gabriel A Devenyi, Ashok K Malla, Ridha Joober, Martin Lepage, M Mallar Chakravarty
Accurate automated quantification of subcortical structures is a greatly pursued endeavour in neuroimaging. In an effort to establish the validity and reliability of these methods in defining the striatum, globus pallidus, and thalamus, we investigated differences in volumetry between manual delineation and automated segmentations derived by widely used FreeSurfer and FSL packages, and a more recent segmentation method, the MAGeT-Brain algorithm. In a first set of experiments, the basal ganglia and thalamus of thirty subjects (15 first episode psychosis [FEP], 15 controls) were manually defined and compared to the labels generated by the three automated methods...
March 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/28246166/differential-role-of-pannexin-1-atp-p2x7-axis-in-il-1%C3%AE-release-by-human-monocytes
#17
Katarzyna Parzych, Anna V Zetterqvist, William R Wright, Nicholas S Kirkby, Jane A Mitchell, Mark J Paul-Clark
IL-1β release is integral to the innate immune system. The release of mature IL-1β depends on 2 regulated events: the de novo induction of pro-IL-1β, generally via NF-κB-dependent transduction pathways; and the assembly and activation of the NLRP3 inflammasome. This latter step is reliant on active caspase-1, pannexin-1, and P2X7 receptor activation. Pathogen-associated molecular patterns in gram-positive and gram-negative bacteria activate IL-1β release from immune cells via TLR2 and TLR4 receptors, respectively...
February 28, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28245472/role-of-protease-activated-receptor-2-in-regulating-focal-segmental-glomerulosclerosis
#18
Yongjun Wang, Yanfa He, Mingzheng Wang, Pei Lv, Jianzhen Liu, Junxia Wang
Background /Aims: The underlying mechanisms leading to focal segmental glomerulosclerosis (FSGS) are lacking. In this report, we examined the role of protease-activated receptors (PARs) subtype PAR2 and its downstream signals in regulating the pathophysiological process of FSGS. METHODS: Nephropathy was induced by intravenous injections of adriamycin (ADR) in rats to study FSGS. Western Blot analysis and ELISA were employed to determine the protein expression levels of PAR2 and its downstream signal pathways as well as the levels of PICs...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28243449/performance-of-the-freestyle-libre-flash-glucose-monitoring-system-in-patients-with-type-1-and-2-diabetes-mellitus
#19
M J Fokkert, P R van Dijk, M A Edens, S Abbes, D de Jong, R J Slingerland, H J G Bilo
OBJECTIVE: To evaluate the performance of the FreeStyle Libre Flash continuous glucose monitoring (FSL-CGM) system against established central laboratory methods. RESEARCH DESIGN AND METHODS: 20 subjects (8 type 1 diabetes mellitus, 12 type 2 diabetes mellitus) were analyzed. FSL-CGM sensor measurements (inserted in arm and abdomen) were compared with capillary blood glucose results analyzed with StatStrip as semigold standard. The glucose response after a standardized oral glucose load was measured by FSL-CGM and capillary samples analyzed by perchloric acid hexokinase (PCA-HK) method, StatStrip and FSL test strip (FSLC), and a commonly used CGM system (iPro2)...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/28227960/automated-volumetry-for-unilateral-hippocampal-sclerosis-detection-in-patients-with-temporal-lobe-epilepsy
#20
Cristina Martins, Nadia Moreira da Silva, Guilherme Silva, Verena E Rozanski, Joao Paulo Silva Cunha, Cristina Martins, Nadia Moreira da Silva, Guilherme Silva, Verena E Rozanski, Joao Paulo Silva Cunha, Joao Paulo Silva Cunha, Guilherme Silva, Verena E Rozanski, Nadia Moreira da Silva, Cristina Martins
Hippocampal sclerosis (HS) is the most common cause of temporal lobe epilepsy (TLE) and can be identified in magnetic resonance imaging as hippocampal atrophy and subsequent volume loss. Detecting this kind of abnormalities through simple radiological assessment could be difficult, even for experienced radiologists. For that reason, hippocampal volumetry is generally used to support this kind of diagnosis. Manual volumetry is the traditional approach but it is time consuming and requires the physician to be familiar with neuroimaging software tools...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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