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Encephalomyelitis

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https://www.readbyqxmd.com/read/28810428/how-have-selection-bias-and-disease-misclassification-undermined-the-validity-of-myalgic-encephalomyelitis-chronic-fatigue-syndrome-studies
#1
Luis Nacul, Eliana M Lacerda, Caroline C Kingdon, Hayley Curran, Erinna W Bowman
Myalgic encephalomyelitis/chronic fatigue syndrome has been a controversial diagnosis, resulting in tensions between patients and professionals providing them with care. A major constraint limiting progress has been the lack of a 'gold standard' for diagnosis; with a number of imperfect clinical and research criteria used, each defining different, though overlapping, groups of people with myalgic encephalomyelitis or chronic fatigue syndrome. We review basic epidemiological concepts to illustrate how the use of more specific and restrictive case definitions could improve research validity and drive progress in the field by reducing selection bias caused by diagnostic misclassification...
March 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28808113/lncrna-gas5-inhibits-microglial-m2-polarization-and-exacerbates-demyelination
#2
Dingya Sun, Zhongwang Yu, Xue Fang, Mingdong Liu, Yingyan Pu, Qi Shao, Dan Wang, Xiaolin Zhao, Aijun Huang, Zhenghua Xiang, Chao Zhao, Robin Jm Franklin, Li Cao, Cheng He
The regulation of inflammation is pivotal for preventing the development or reoccurrence of multiple sclerosis (MS). A biased ratio of high-M1 versus low-M2 polarized microglia is a major pathological feature of MS Here, using microarray screening, we identify the long noncoding RNA (lncRNA) GAS5 as an epigenetic regulator of microglial polarization. Gain- and loss-of-function studies reveal that GAS5 suppresses microglial M2 polarization. Interference with GAS5 in transplanted microglia attenuates the progression of experimental autoimmune encephalomyelitis (EAE) and promotes remyelination in a lysolecithin-induced demyelination model...
August 14, 2017: EMBO Reports
https://www.readbyqxmd.com/read/28806345/pediatric-optic-neuritis-what-is-new
#3
Mark Borchert, Grant T Liu, Stacy Pineles, Amy T Waldman
Few diseases blur the margins between their childhood and adult-onset varieties as much as optic neuritis. This report will review our state of knowledge of pediatric optic neuritis, as well as its relationship to the latest consensus definitions of neuroinflammatory disease. Current diagnostic and treatment options will be explored, as well as our potential to uncover an understanding of pediatric optic neuritis through systematic prospective studies. The risk of evolving multiple sclerosis is probably less than in adults, but pediatric optic neuritis is more likely to be an initial manifestation of acute disseminated encephalomyelitis...
September 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28805529/cognitive-behaviour-therapy-and-objective-assessments-in-chronic-fatigue-syndrome
#4
Graham McPhee
Most evaluations of cognitive behavioural therapy to treat people with chronic fatigue syndrome/myalgic encephalomyelitis rely exclusively on subjective self-report outcomes to evaluate whether treatment is effective. Few studies have used measures appropriate to assessing whether cognitive behavioural therapy changes in more objective measures. A review of studies incorporating objective measures suggests that there is a lack of evidence that cognitive behavioural therapy produces any improvement in a patient's physical capabilities or other objective measures such as return to work...
August 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28805528/pace-investigators-response-is-misleading-regarding-patient-survey-results
#5
Karen D Kirke
The PACE investigators' citation of a patient survey might mislead readers into thinking that the experience of people with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) supports PACE findings. In fact, patient survey evidence directly contradicts the results of the PACE trial. A review of survey data published between 2001 and 2015 reveals that for most patients, graded exercise therapy leads to worsening of symptoms, cognitive behavioural therapy leads to no change in symptoms, and pacing leads to improvement...
August 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28805527/bias-misleading-information-and-lack-of-respect-for-alternative-views-have-distorted-perceptions-of-myalgic-encephalomyelitis-chronic-fatigue-syndrome-and-its-treatment
#6
Ellen Goudsmit, Sandra Howes
The PACE trial is one of the most recent studies evaluating cognitive behavioural therapy and graded exercise therapy for myalgic encephalomyelitis/chronic fatigue syndrome. These interventions are based on a model which assumes that symptoms are perpetuated by factors such as misguided beliefs and a lack of activity. Our analysis indicates that the researchers have shown significant bias in their accounts of the literature and may also have overstated the effectiveness of the above treatments. We submit that their approach to criticisms undermines the scientific process and is inconsistent with best practice...
August 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28805522/pace-trial-claims-for-recovery-in-myalgic-encephalomyelitis-chronic-fatigue-syndrome-true-or-false-it-s-time-for-an-independent-review-of-the-methodology-and-results
#7
Charles Bernard Shepherd
The PACE trial set out to discover whether cognitive behaviour therapy and graded exercise therapy are safe and effective forms of treatment for myalgic encephalomyelitis/chronic fatigue syndrome. It concluded that these interventions could even result in recovery. However, patient evidence has repeatedly found that cognitive behaviour therapy is ineffective and graded exercise therapy can make the condition worse. The PACE trial methodology has been heavily criticised by clinicians, academics and patients...
August 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28805520/pace-team-response-shows-a-disregard-for-the-principles-of-science
#8
Jonathan Edwards
The PACE trial of cognitive behavioural therapy and graded exercise therapy for chronic fatigue syndrome/myalgic encephalomyelitis has raised serious questions about research methodology. An editorial article by Geraghty gives a fair account of the problems involved, if anything understating the case. The response by White et al. fails to address the key design flaw, of an unblinded study with subjective outcome measures, apparently demonstrating a lack of understanding of basic trial design requirements. The failure of the academic community to recognise the weakness of trials of this type suggests that a major overhaul of quality control is needed...
August 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28805519/pace-trial-authors-continue-to-ignore-their-own-null-effect
#9
Mark Vink
Protocols and outcomes for the PACE trial were changed after the start of the trial. These changes made substantial differences, leading to exaggerated claims for the efficacy of cognitive behavior therapy and graded exercise therapy in myalgic encephalomyelitis/chronic fatigue syndrome. The small, self-reported improvements in subjective measures cannot be used to say the interventions are effective, particularly in light of the absence of objective improvement. Geraghty's criticism of the trial was reasonable and supported by the evidence...
August 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28805513/distress-signals-does-cognitive-behavioural-therapy-reduce-or-increase-distress-in-chronic-fatigue-syndrome-myalgic-encephalomyelitis
#10
Keith R Laws
Reducing the psychological distress associated with chronic fatigue syndrome/myalgic encephalomyelitis is seen as a key aim of cognitive behavioural therapy. Although cognitive behavioural therapy is promoted precisely in this manner by the National Institute of Clinical Excellence, the evidence base on distress reduction from randomised controlled trials is limited, equivocal and poor quality. Crucially, data derived from multiple patient surveys point to worsening and increase distress; however, despite being invited, such data have been dismissed as second class by National Institute of Clinical Excellence...
August 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28803660/multiple-sclerosis-skin-induced-antigen-specific-immune-tolerance
#11
REVIEW
Paula Wildner, Krzysztof W Selmaj
Multiple sclerosis (MS) is a highly prevalent demyelinating disorder, presumed to be driven by an autoimmune response toward the central nervous system (CNS) components. All currently available treatments modulate the immune system globally and besides the reduction of disease activity, they may also impose considerable disturbances on the immune protective mechanisms. Thus, induction of antigen-specific immune tolerance remains the ultimate goal of MS therapy. Such approach carries promising therapeutic perspectives and, above all, a desirable safety profile...
August 2, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28801931/immunomodulatory-effects-of-adipose-stromal-vascular-fraction-cells-promote-alternative-activation-macrophages-to-repair-tissue-damage
#12
Annie C Bowles, Rachel M Wise, Brittany Y Gerstein, Robert C Thomas, Roberto Ogelman, Isabella Febbo, Bruce A Bunnell
The pathogenesis of many diseases is driven by the interactions between helper T (TH ) cells and macrophages. The phenotypes of these cells are a functional dichotomy that are persuaded according to the surrounding milieu. In both multiple sclerosis (MS) and the experimental autoimmune encephalomyelitis (EAE) model, TH 1 and TH 17 cells propagate autoimmune signaling and inflammation in the peripheral lymphoid tissues. In turn, this pro-inflammatory repertoire promotes the classical activation, formerly the M1-type, macrophages...
August 12, 2017: Stem Cells
https://www.readbyqxmd.com/read/28801358/il-4-il-13-heteroreceptor-influences-th17-cell-conversion-and-sensitivity-to-regulatory-t-cell-suppression-to-restrain-experimental-allergic-encephalomyelitis
#13
Subhasis Barik, Jason S Ellis, Jason A Cascio, Mindy M Miller, Tobechukwu K Ukah, Alexis N Cattin-Roy, Habib Zaghouani
IL-4 and IL-13 have been defined as anti-inflammatory cytokines that can counter myelin-reactive T cells and modulate experimental allergic encephalomyelitis. However, it is not known whether endogenous IL-4 and IL-13 contribute to the maintenance of peripheral tolerance and whether their function is coordinated with T regulatory cells (Tregs). In this study, we used mice in which the common cytokine receptor for IL-4 and IL-13, namely the IL-4Rα/IL-13Rα1 (13R) heteroreceptor (HR), is compromised and determined whether the lack of signaling by endogenous IL-4 and IL-13 through the HR influences the function of effector Th1 and Th17 cells in a Treg-dependent fashion...
August 11, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28800924/the-influence-of-macrophage-growth-factors-on-theiler-s-murine-encephalomyelitis-virus-tmev-infection-and-activation-of-macrophages
#14
Karin M Schneider, Neva B Watson, Scott B Minchenberg, Paul T Massa
Macrophages are common targets for infection and innate immune activation by many pathogenic viruses including the neurotropic Theiler's Murine Encephalomyelitis Virus (TMEV). As both infection and innate activation of macrophages are key determinants of viral pathogenesis especially in the central nervous system (CNS), an analysis of macrophage growth factors on these events was performed. C3H mouse bone-marrow cells were differentiated in culture using either recombinant macrophage colony stimulating factor (M-CSF) or granulocyte-macrophage colony-stimulating factor (GM-CSF), inoculated with TMEV (BeAn) and analyzed at various times thereafter...
August 8, 2017: Cytokine
https://www.readbyqxmd.com/read/28800089/fitnet-s-internet-based-cognitive-behavioural-therapy-is-ineffective-and-may-impede-natural-recovery-in-adolescents-with-myalgic-encephalomyelitis-chronic-fatigue-syndrome-a-review
#15
REVIEW
Simin Ghatineh, Mark Vink
The Dutch Fatigue In Teenagers on the interNET (FITNET) study claimed that after 6 months, internet based cognitive behaviour therapy in adolescents with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS), led to a 63% recovery rate compared to 8% after usual care, and that this was maintained at long term follow up (LTFU). Our reanalysis shows that their post-hoc definition of recovery included the severely ill, the unblinded trial had no adequate control group and it used lax selection criteria as well as outcomes assessed via questionnaires rather than objective outcomes, further contributing to exaggerated recovery figures...
August 11, 2017: Behavioral Sciences
https://www.readbyqxmd.com/read/28796840/yes-research-matters
#16
Mari L Shinohara
My father was diagnosed with stomach cancer recently. Luckily, it was still at an early stage, and endoscopic surgery successfully took care of it. My father was fortunate; since people with stomach cancer do not show clear symptoms in the early stages, the disease is often not diagnosed until it becomes advanced. In his case, the diagnosis started from a suggestion by his doctor to check whether he had a gastric infection with Helicobacter pylori, a bacterial species found in the digestive tract. In Japan, where he lives, a majority of gastric cancer patients (more than 99%) have been infected with H...
August 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28796815/effect-of-teriflunomide-on-cortex-basal-ganglia-thalamus-cxbgth-circuit-glutamatergic-dysregulation-in-the-theiler-s-murine-encephalomyelitis-virus-mouse-model-of-multiple-sclerosis
#17
Claire M Modica, Ferdinand Schweser, Michelle L Sudyn, Nicola Bertolino, Marilena Preda, Paul Polak, Danielle M Siebert, Jacqueline C Krawiecki, Michele Sveinsson, Jesper Hagemeier, Michael G Dwyer, Suyog Pol, Robert Zivadinov
BACKGROUND: Pathology of gray matter is associated with development of physical and cognitive disability in patients with multiple sclerosis. In particular, glutamatergic dysregulation in the cortex-basal ganglia-thalamus (CxBGTh) circuit could be associated with decline in these behaviors. OBJECTIVES: To investigate the effect of an immunomodulatory therapy (teriflunomide, Aubagio®) on changes of the CxBGTh loop in the Theiler's Murine Encephalomyelitis Virus, (TMEV) mouse model of MS...
2017: PloS One
https://www.readbyqxmd.com/read/28795263/dynamic-distribution-and-tissue-tropism-of-avian-encephalomyelitis-virus-isolate-xy-q-1410-in-experimentally-infected-korean-quail
#18
Lili Fan, Zhijun Li, Jiali Huang, Zengqi Yang, Sa Xiao, Xinglong Wang, Ruyi Dang, Shuxia Zhang
Avian encephalomyelitis (AE) is an important infectious poultry disease worldwide that is caused by avian encephalomyelitis virus (AEV). However, to date, the dynamic distribution of AEV in quails has not been well described. Quantitative real-time polymerase chain reaction (qPCR) and immunohistochemistry (IHC) assays were used to investigate the dynamic distribution and tissue tropism of AEV in experimentally infected Korean quail. AEV was detected in the cerebrum, cerebellum, proventriculus, intestine, liver, pancreas, spleen, bursa, lung and kidney as early as 3 days post-infection (dpi)...
August 9, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28793252/human-gut-derived-commensal-bacteria-suppress-cns-inflammatory-and-demyelinating-disease
#19
Ashutosh Mangalam, Shailesh K Shahi, David Luckey, Melissa Karau, Eric Marietta, Ningling Luo, Rok Seon Choung, Josephine Ju, Ramakrishna Sompallae, Katherine Gibson-Corley, Robin Patel, Moses Rodriguez, Chella David, Veena Taneja, Joseph Murray
The human gut is colonized by a large number of microorganisms (∼10(13) bacteria) that support various physiologic functions. A perturbation in the healthy gut microbiome might lead to the development of inflammatory diseases, such as multiple sclerosis (MS). Therefore, gut commensals might provide promising therapeutic options for treating MS and other diseases. We report the identification of human gut-derived commensal bacteria, Prevotella histicola, which can suppress experimental autoimmune encephalomyelitis (EAE) in a human leukocyte antigen (HLA) class II transgenic mouse model...
August 8, 2017: Cell Reports
https://www.readbyqxmd.com/read/28789840/cyclophilin-inhibitor-nim811-ameliorates-experimental-allergic-encephalomyelitis
#20
Zi L Huang, Darshan Pandya, Daisy K Banta, Maryam S Ansari, Unsong Oh
Cyclophilins have diverse functions that may affect the course of central nervous system (CNS) inflammatory disorders. Anti-inflammatory and neuroprotective mechanisms may be targeted by inhibition of cyclophilin A-dependent and cyclophilin D-dependent functions, respectively. We tested the effect of cyclophilin inhibition on CNS inflammation by administering N-methyl-4-isoleucine-cyclosporin (NIM811) to mice undergoing experimental allergic encephalomyelitis (EAE). Treatment with NIM811 resulted in significant reduction of EAE clinical severity...
August 2, 2017: Journal of Neuroimmunology
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