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Misdiagnosis of multiple sclerosis (MS) is common and often occurs due to misattribution of non-MS magnetic resonance imaging (MRI) lesions to MS demyelination. A recently developed MRI biomarker, the central vein sign (CVS), has demonstrated high specificity for MS lesions and may thus help prevent misdiagnosis.
This study explores the potential "real world" diagnostic value of CVS by comparing CVS in patients with MS and patients previously misdiagnosed with MS.
Fifteen patients with MS and 15 misdiagnosed with MS were prospectively recruited to undergo 3T brain MRI. T2-weighted fluid-attenuated inversion recovery (FLAIR) and T2*-weighted segmented echo-planar-imaging (T2*-EPI) were acquired. The generated FLAIR* images were analyzed by two independent raters. The percentage of lesions with CVS was calculated for each patient.
A CVS lesion threshold of 29% or higher resulted in high sensitivity (0.79) and specificity (0.88) for MS and correctly identified 87% of patients previously misdiagnosed with MS. Interrater reliability for CVS was high with a Cohen's kappa coefficient of 0.86.
This study demonstrates the ability of CVS to differentiate between patients with MS and patients with an MS misdiagnosis resulting from standard MRI and clinical evaluation. Clinical application of CVS may reduce MS misdiagnosis.
This study demonstrates the ability of CVS to differentiate between patients with MS and patients with an MS misdiagnosis resulting from standard MRI and clinical evaluation. Clinical application of CVS may reduce MS misdiagnosis.
Multiple sclerosis (MS) is the 2
most common, disability causing neurological disorder in young adults, known for its differences in prevalence according to geographical position. Data on MS epidemiology is lacking in Greece. In this study, we aimed to examine the pattern of MS related hospital admissions in Greece and analyze their spatial distribution. Data for hospital admissions due to MS was obtained from the Hellenic Statistical Authority (ELSTAT) database and they were available from 1999 to 2012.
We used the proportional hospitalization ratio (PHR) which was age and sex adjusted according to hospitalizations of Greek population, in order to calculate the ratio between hospitalizations in each regional unit (RU) and hospitalizations of national population. PHR was calculated for each RU, which is categorized as level 3 based on the Nomenclature of Territorial Units for Statistics (NUTS level 3). The classification of MS was based on International Classification of Diseases, Ninth Revision (ICD-9)6).
In this study we present a rise in hospital admissions related to MS over a 14-year period, possibly indicating a parallel rise in incidence. A combinational analysis of the number of hospitalizations along with incidence studies could be further performed to be used to design public health interventions.
In this study we present a rise in hospital admissions related to MS over a 14-year period, possibly indicating a parallel rise in incidence. A combinational analysis of the number of hospitalizations along with incidence studies could be further performed to be used to design public health interventions.
Superlatives are exaggerative terms that may not accurately portray a treatment's effectiveness, safety, or availability.
The objective of this study was to evaluate the use of superlatives in news articles describing multiple sclerosis treatments.
We searched Google News for 11 prespecified superlative terms describing multiple sclerosis therapies in online news articles.
We found that news articles commonly describe non-FDA approved multiple sclerosis therapies with superlative terms without providing clinical evidence or attribution. Additionally, no articles were published on a HONcode certified webpage.
It is important that healthcare professionals are aware of medical misinformation presented to the public.
It is important that healthcare professionals are aware of medical misinformation presented to the public.Recently, the ubiquitous presence of microplastics (MPs) has drawn worldwide concern over its potential threat to aquatic organisms. However, the effects of MPs on the olfactory ability of fish and the subsequent odorant evoked behaviors remain elusive. In the present study, we analyzed the potential olfactory toxicity of polystyrene (PS) MPs by assessing olfactory-driven behaviors of goldfish in response to odorants. Our results showed that the olfactory-driven behavioral responses of goldfish to L-cysteine and taurocholic acid were significantly hampered by a 28-day MP exposure. Further analysis demonstrated that exposure to MPs may suppress the expression of genes encoding olfactory G protein-coupled receptors, inhibit the enzyme activities of cation transport ATPases crucial for action potential generation, alter the in vivo contents of neurotransmitters as well as metabolites involved in the transduction of electrical signals, and cause olfactory bulb injury and neurotoxicity closely related to the processing of electrical signals. In conclusion, the results obtained in the present study suggest that MPs at environmentally relevant concentrations could impair the olfactory-mediated behavioral responses of goldfish, probably through hampering odorant identification, action potential generation, olfactory neural signal transduction, and olfactory information processing.Magnetite-coating biochar (MBC) is a promising remediator for antibiotic contamination. Accurate models describing the sorption affinity are required to better understand the role of minerals. In this study, the presence of magnetite led to the improvements of oxygen-containing groups (i.e. C˭O) and regulation of π-systems within BC. Based on Dubinin-Ashtakhov (DA) model, the differences of site energy (Em) and sorption heterogeneity (σe*) led to the variances between sorption capacities of sulfonamides (SAs). The positive correlations between Em and the oxygen content or pore volume of MBCs indicated that π-π interactions, H-bonding, and pore-filling may act as the high energy sites. Moreover, σe* was related to the distribution of magnetite on BC and their porosities. GSK 3 inhibitor These results suggested that compared to BCs, the coating minerals improved the π-interaction assisted H-bonding and proton configuration of antibiotic when sorbing on MBC. The negative correlations between the Em of different SAs with their molecular sizes and solubilities resulted from steric effects and competition with water, which further confirmed the proposed high energy sites on MBCs.
Website: https://www.selleckchem.com/GSK-3.html
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