Search results for "Aves"

Plasticity of brain wave network interactions and evolution across physiologic states

2015

Neural plasticity transcends a range of spatio-temporal scales and serves as the basis of various brain activities and physiologic functions. At the microscopic level, it enables the emergence of brain waves with complex temporal dynamics. At the macroscopic level, presence and dominance of specific brain waves is associated with important brain functions. The role of neural plasticity at different levels in generating distinct brain rhythms and how brain rhythms communicate with each other across brain areas to generate physiologic states and functions remains not understood. Here we perform an empirical exploration of neural plasticity at the level of brain wave network interactions repre…

Cellular Immunity and Retrobulbar Fibroblasts in Graves' Ophthalmopathy

1994

In Graves' ophthalmopathy (GO), retrobulbar connective tissue is infiltrated by T cells whose role in the pathogenesis of the disease was investigated in the present work. The aims included firstly to characterize subsets of blood lymphocytes and of sessile lymphocytes cloned from a retroorbital tissue specimen. Second, in counterstimulation assays, the ability of patients' T cells to influence cultivated retrobulbar fibroblasts and in turn the enhancement of lymphocyte proliferation by retrobulbar fibroblasts was investigated. Blood lymphocytes of 16 GO patients and 12 controls isolated by density gradient centrifugation and retrobulbar fibroblasts obtained from orbital decompression were …

Public Health Relevance of Graves' Orbitopathy

2012

Disfiguring proptosis and functional impairment in patients with Graves' orbitopathy (GO) may lead to impaired earning capacity and to considerable indirect/direct costs.The aim of the study was to investigate the public health relevance of GO.This cross-sectional study was performed between 2005 and 2009 at a multidisciplinary university orbital center.A total of 310 unselected patients with GO of various degrees of severity and activity participated in the study.We conducted an observational study.We measured work disability and sick leave as well as the resulting indirect/direct costs of GO-specific therapies.Of 215 employed patients, 47 (21.9%) were temporarily work disabled, and 12 (5.…

PREGO (presentation of Graves' orbitopathy) study: changes in referral patterns to European Group On Graves' Orbitopathy (EUGOGO) centres over the pe…

2015

BACKGROUND/AIMS: The epidemiology of Graves' orbitopathy (GO) may be changing. The aim of the study was to identify trends in presentation of GO to tertiary centres and initial management over time.METHODS: Prospective observational study of European Group On Graves' Orbitopathy (EUGOGO) centres. All new referrals with a diagnosis of GO over a 4-month period in 2012 were included. Clinical and demographic characteristics, referral timelines and initial decisions about management were recorded. The data were compared with a similar EUGOGO survey performed in 2000.RESULTS: The demographic characteristics of 269 patients studied in 2012 were similar to those collected in the year 2000, includi…

Effects of hawthorn (Crataegus laevigata) on platelet aggregation in healthy volunteers

2011

Proteomics of Orbital Tissue in Thyroid-Associated Orbitopathy.

2015

A potentially altered protein expression profile in orbital tissue from patients with thyroid-associated orbitopathy (TAO) is suspected.To detect for the first time changes in proteomic patterns of orbital connective tissue in TAO and compare these with control tissue using mass spectrometry.Proteomics cross-sectional, comparative study.Two academic endocrine institutions.A total of 64 orbital and peripheral adipose tissue samples were collected from 39 patients with TAO and 25 control subjects.Samples were analyzed and identified using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry technology.Mean intensity values of all identified peptides per protein.Thirty-…

Proteomics Differentiate Between Thyroid-Associated Orbitopathy and Dry Eye Syndrome.

2015

PURPOSE: In patients with thyroid-associated orbitopathy (TAO), the dry eye syndrome occurs frequently, and symptoms and signs of both disorders overlap making early and accurate differential diagnosis difficult. A differentiation via specific markers is warranted. METHODS: Tear fluid samples of 120 subjects with TAO, TAO + dry eye, dry eye, and controls were collected. The samples were measured using matrix-assisted laser desorption ionization mass spectrometry. The identified proteins were tested with antibody microarrays. RESULTS: Proteomics identified deregulated proteins in TAO and dry eye. Compared with dry eye, proline-rich protein 1 (PROL1, P = 0.002); uridine diphosphate (UDP)-gluc…

Proteomics of tear fluid in thyroid-associated orbitopathy.

2012

Proteomics and mass spectrometry are useful tools for peptide screening in body fluids. In thyroid-associated orbitopathy (TAO), evidence for lacrimal gland involvement with altered composition of tears has been reported. Our objective was to detect and evaluate potential changes in the proteomic patterns of tear fluid in TAO.Tear fluid was collected from 45 patients with TAO and 15 healthy controls. Tear proteins were analyzed using surface-enhanced laser desorption/ionization time-of-flight mass spectrometry, and peptides were identified using matrix-assisted laser desorption/ionization time-of-flight technology.Peptides with molecular weights 3808 Dalton (Da, p=0.004), 3734 Da (p=0.034),…

Modeling the impact of soft tissue on axial transmission measurements of ultrasonic guided waves in human radius

2008

Recent in vitro and simulation studies have shown that guided waves measured at low ultrasound frequencies (f=200 kHz) can characterize both material properties and geometry of the cortical bone wall. In particular, a method for an accurate cortical thickness estimation from ultrasound velocity data has been presented. The clinical application remains, however, a challenge as the impact of a layer of soft tissue on top of the bone is not yet well established, and this layer is expected to affect the dispersion and relative intensities of guided modes. The present study is focused on the theoretical modeling of the impact of an overlying soft tissue. A semianalytical method and finite-differ…

Revisiting mu suppression in autism spectrum disorder

2014

Two aspects of the EEG literature lead us to revisit mu suppression in Autism Spectrum Disorder (ASD). First and despite the fact that the mu rhythm can be functionally segregated in two discrete sub-bands, 8-10 Hz and 10-12/13 Hz, mu-suppression in ASD has been analyzed as a homogeneous phenomenon covering the 8-13 Hz frequency. Second and although alpha-like activity is usually found across the entire scalp, ASD studies of action observation have focused on the central electrodes (C3/C4). The present study was aimed at testing on the whole brain the hypothesis of a functional dissociation of mu and alpha responses to the observation of human actions in ASD according to bandwidths. Electro…