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https://www.readbyqxmd.com/read/28220542/the-gut-microbiome-in-human-neurological-disease-a-review
#1
REVIEW
Helen Tremlett, Kylynda C Bauer, Silke Appel-Cresswell, Brett B Finlay, Emmanuelle Waubant
Almost half the cells and 1% of the unique genes found in our bodies are human, the rest are from microbes; predominantly bacteria, archaea, fungi, and viruses. These microorganisms collectively form the human microbiota, with most colonizing the gut. Recent technological advances, open access data-libraries, and application of high throughput sequencing have allowed these microbes to be identified and their contribution to neurological health examined. Emerging evidence links perturbations in the gut microbiota to neurological disease, including disease risk, activity, and progression...
February 21, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28210983/multi-view-ensemble-classification-of-brain-connectivity-images-for-neurodegeneration-type-discrimination
#2
Michele Fratello, Giuseppina Caiazzo, Francesca Trojsi, Antonio Russo, Gioacchino Tedeschi, Roberto Tagliaferri, Fabrizio Esposito
Brain connectivity analyses using voxels as features are not robust enough for single-patient classification because of the inter-subject anatomical and functional variability. To construct more robust features, voxels can be aggregated into clusters that are maximally coherent across subjects. Moreover, combining multi-modal neuroimaging and multi-view data integration techniques allows generating multiple independent connectivity features for the same patient. Structural and functional connectivity features were extracted from multi-modal MRI images with a clustering technique, and used for the multi-view classification of different phenotypes of neurodegeneration by an ensemble learning method (random forest)...
February 16, 2017: Neuroinformatics
https://www.readbyqxmd.com/read/28191734/integrative-proteomics-genomics-and-translational-immunology-approaches-reveal-mutated-forms-of-proteolipid-protein-1-plp1-and-mutant-specific-immune-response-in-multiple-sclerosis
#3
Veneta Qendro, Grace A Bugos, Debbie H Lundgren, John Glynn, May H Han, David K Han
In order to gain mechanistic insights into multiple sclerosis (MS) pathogenesis, we utilized a multi-dimensional approach to test the hypothesis that mutations in myelin proteins lead to immune activation and central nervous system autoimmunity in MS. Mass spectrometry-based proteomic analysis of human MS brain lesions revealed seven unique mutations of PLP1; a key myelin protein that is known to be destroyed in MS. Surprisingly, in-depth genomic analysis of two MS patients at the genomic DNA and mRNA confirmed mutated PLP1 in RNA, but not in the genomic DNA...
February 12, 2017: Proteomics
https://www.readbyqxmd.com/read/28164765/commonalities-in-biological-pathways-genetics-and-cellular-mechanism-between-alzheimer-disease-and-other-neurodegenerative-diseases-an-in-silico-updated-overview
#4
Khurshid Ahmad, Mohammad Hassan Baig, Gohar Mushtaq, Mohammad Amjad Kamal, Nigel H Greig, Inho Choi
Alzheimer's disease (AD) is the most common and well-studied neurodegenerative disease (ND). Biological pathways, pathophysiology and genetics of AD show commonalities with other NDs viz. Parkinson's disease (PD), Amyotrophic lateral sclerosis (ALS), Huntington's disease (HD), Prion Disease and Dentatorubral-pallidoluysian atrophy (DRPLA). Many of the NDs, sharing the common features and molecular mechanisms suggests that pathology may be directly comparable and be implicated in disease prevention and development of highly effective therapies...
February 3, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28139194/phenotypical-and-functional-characteristics-of-in-vitro-expanded-adipose-derived-mesenchymal-stromal-cells-from-patients-with-systemic-sclerosis
#5
C Capelli, E Zaccara, P Cipriani, P Di Benedetto, W Maglione, R Andracco, G Di Luca, F Pignataro, R Giacomelli, M Introna, C Vitali, N Del Papa
<p>Mesenchymal stromal cells (MSCs) have received attention as an ideal source of regenerative cells because of their multi-potential abilities. Adipose tissue (AT) is an attractive source of MSCs. Recent studies have shown that autologous fat grafting may be effective in the treatment of systemic sclerosis (SSc), but no specific study exists aimed at investigating whether AT-MSCs from SSc patients maintain normal phenotypic and functional characteristics.</p><p>To investigate whether AT-MSCs from patients with SSc (SSc-AT-MSCs) are phenotypically and functionally identical to those from healthy controls (HC-AT-MSCs)...
January 31, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28137480/systemic-sclerosis-and-exposure-to-heavy-metals-a-case-control-study-of-100-patients-and-300-controls
#6
REVIEW
I Marie, J-F Gehanno, M Bubenheim, A-B Duval-Modeste, P Joly, S Dominique, P Bravard, D Noël, A-F Cailleux, J Benichou, H Levesque, J-P Goullé
OBJECTIVE: This case control study assessed: 1) the relationship of systemic sclerosis (SSc) related to exposure to heavy metals; and 2) the risk of SSc related to occupational exposure in male and female patients. METHODS: From 2005 to 2008, 100 patients with a definite diagnosis of SSc were included in the study; 3 age, gender, and smoking habit matched controls were selected for each patient. All SSc patients and controls underwent detection and quantification of heavy metal traces in hair samples, using multi-element inductively coupled plasma mass spectrometry (ICP-MS)...
January 27, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28130644/clinical-applications-of-multi-parametric-cmr-in-myocarditis-and-systemic-inflammatory-diseases
#7
Jakub Lagan, Matthias Schmitt, Christopher A Miller
Cardiac magnetic resonance (CMR) has changed the management of suspected viral myocarditis by providing a 'positive' diagnostic test and has lead to new insights into myocardial involvement in systemic inflammatory conditions. In this review we analyse the use of CMR tissue characterisation techniques across the available studies including T2 weighted imaging, early gadolinium enhancement, late gadolinium enhancement, Lake Louise Criteria, T2 mapping, T1 mapping and extracellular volume assessment. We also discuss the use of multiparametric CMR in acute cardiac transplant rejection and a variety of inflammatory conditions such as sarcoidosis, systemic lupus erythrematous, rheumatoid arthritis and systemic sclerosis...
January 27, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28115314/discriminating-sample-groups-with-multi-way-data
#8
Tianmeng Lyu, Eric F Lock, Lynn E Eberly
High-dimensional linear classifiers, such as distance weighted discrimination (DWD) and versions of the support vector machine (SVM), are commonly used in biomedical research to distinguish groups of subjects based on a large number of features. However, their use is limited to applications where a single vector of features is measured for each subject. In practice, data are often multi-way, or measured over multiple dimensions. For example, metabolite abundance may be measured over multiple regions or tissues, or gene expression may be measured over multiple time points, for the same subjects...
January 23, 2017: Biostatistics
https://www.readbyqxmd.com/read/28114839/detecting-neuronal-dysfunction-of-hand-motor-cortex-in-als-a-mrsi-study
#9
Yuzhou Wang, Xiaodi Li, Wenming Chen, Zhanhang Wang, Yan Xu, Jingpan Luo, Hanbo Lin, Guijun Sun
BACKGROUND: Although hand motor cortex (HMC) has been constantly used for identification of primary motor cortex in magnetic resonance spectroscopy (MRS) studies of amyotrophic lateral sclerosis (ALS), neurochemical profiles of HMC have never been assessed independently. As HMC has a constant location and the clinic-anatomic correlation between hand motor function and HMC has been established, we hypothesize that HMC may serve as a promising region of interest in diagnosing ALS. PATIENTS AND METHODS: Fourteen ALS patients and 14 age- and gender-matched healthy controls (HC) were recruited in this study...
January 23, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28100104/theoretical-predication-of-temperature-effects-on-accommodative-processes-in-simulated-amyotrophic-lateral-sclerosis-during-hypothermia-and-hyperthermia
#10
D I Stephanova, A Kossev
Electrotonic potentials allow the accommodative processes to long-lasting subthreshold polarizing stimuli to be assessed. The present study investigates such potentials in previously simulated cases of amyotrophic lateral sclerosis, termed as ALS1, ALS2 and ALS3, respectively, when the temperature is changed during hypothermia ([Formula: see text]C) and hyperthermia ([Formula: see text]C). The ALS cases are modeled as three progressively severe uniform axonal dysfunctions along the human motor nerve fiber which is simulated by our temperature-dependent multi-layered numerical model...
January 18, 2017: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/28093823/sleep-and-its-associations-with-perceived-and-objective-cognitive-impairment-in-individuals-with-multiple-sclerosis
#11
Abbey J Hughes, Brett A Parmenter, Jodie K Haselkorn, Jesus F Lovera, Dennis Bourdette, Eilis Boudreau, Michelle H Cameron, Aaron P Turner
Problems with sleep and cognitive impairment are common among people with multiple sclerosis (MS). The present study examined the relationship between self-reported sleep and both objective and perceived cognitive impairment in MS. Data were obtained from the baseline assessment of a multi-centre intervention trial (NCT00841321). Participants were 121 individuals with MS. Nearly half (49%) of participants met the criteria for objective cognitive impairment; however, cognitively impaired and unimpaired participants did not differ on any self-reported sleep measures...
January 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28086792/irish-general-practitioner-attitudes-toward-decriminalisation-and-medical-use-of-cannabis-results-from-a-national-survey
#12
Des Crowley, Claire Collins, Ide Delargy, Eamon Laird, Marie Claire Van Hout
BACKGROUND: Governmental debate in Ireland on the de facto decriminalisation of cannabis and legalisation for medical use is ongoing. A cannabis-based medicinal product (Sativex®) has recently been granted market authorisation in Ireland. This unique study aimed to investigate Irish general practitioner (GP) attitudes toward decriminalisation of cannabis and assess levels of support for use of cannabis for therapeutic purposes (CTP). METHODS: General practitioners in the Irish College of General Practitioner (ICGP) database were invited to complete an online survey...
January 13, 2017: Harm Reduction Journal
https://www.readbyqxmd.com/read/28069095/deficits-in-social-cognition-an-unveiled-signature-of-multiple-sclerosis
#13
Moussa A Chalah, Samar S Ayache
BACKGROUND AND OBJECTIVES: Multiple sclerosis (MS) is a chronic progressive inflammatory disease of the central nervous system, representing the primary cause of non-traumatic disability in young adults. Cognitive dysfunction can affect patients at any time during the disease process and might alter the six core functional domains. Social cognition is a multi-component construct that includes the theory of mind, empathy and social perception of emotions from facial, bodily and vocal cues...
January 10, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28058539/validation-of-the-ucla-scleroderma-clinical-trial-consortium-gastrointestinal-tract-instrument-2-0-in-english-and-chinese-speaking-patients-in-a-multi-ethnic-singapore-systemic-sclerosis-cohort
#14
Andrea Hsiu Ling Low, Xiaohui Xin, Weng Giap Law, Gim Gee Teng, Amelia Santosa, Anita Lim, Grace Chan, Swee Cheng Ng, Julian Thumboo
The aim of this study was to (1) translate the Gastrointestinal Tract Instrument (GIT) 2.0 from English to Chinese and (2) validate both versions in a multi-ethnic systemic sclerosis cohort in Singapore (SCORE). The English GIT2.0 was translated to Chinese using a standard forward-backward translation approach. Psychometric evaluation of the GIT2.0 included internal consistency reliability (using Cronbach's alpha), test-retest reliability (using intra-class correlation coefficient (ICC)), scale level factor analysis, and construct validity (using Spearman correlation) against the modified Scleroderma Health Assessment Questionnaire (S-HAQ) and the SF-36 v2...
January 5, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28058507/als-ftld-experimental-models-and-reality
#15
REVIEW
Rachel H Tan, Yazi D Ke, Lars M Ittner, Glenda M Halliday
Amyotrophic lateral sclerosis is characterised by a loss of upper and lower motor neurons and characteristic muscle weakness and wasting, the most common form being sporadic disease with neuronal inclusions containing the tar DNA-binding protein 43 (TDP-43). Frontotemporal lobar degeneration is characterised by atrophy of the frontal and/or temporal lobes, the most common clinical form being the behavioural variant, in which neuronal inclusions containing either TDP-43 or 3-repeat tau are most prevalent. Although the genetic mutations associated with these diseases have allowed various experimental models to be developed, the initial genetic forms identified remain the most common models employed to date...
January 5, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28056476/-advanced-systemic-sclerosis-endovascular-reconstruction-of-the-aortic-bifurcation-for-limb-salvage
#16
Florian Stein, Lars Kamper, Konstantinos Meletiadis, Ulrich Kusenack, Patrick Haage
History and admission findings A 69-year-old patient was initially hospitalized because of a 1.5 cm ulceration at the back of the right foot which had existed for the last year and become increasingly swollen and painful. Medical history revealed PmScl-positive systemic sclerosis presenting with a massive calcinosis cutis, advanced pulmonary fibrosis and peripheral artery disease. Examinations Inflammatory markers were normal. MR-Angiography of the lower extremities revealed a multi-segmental high-grade stenosis of the aortic bifurcation due to extensively calcified plaques...
January 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28046971/th-cd-206-01-expectation-maximization-algorithm-based-tissue-mixture-quantification-for-perfusion-mri
#17
H Han, Z Liang, L Li, L Xing
PURPOSE: To investigate the feasibility of estimating the tissue mixture perfusions and quantifying cerebral blood flow change in arterial spin labeled (ASL) perfusion MR images. METHODS: The proposed perfusion MR image analysis framework consists of 5 steps: (1) Inhomogeneity correction was performed on the T1- and T2-weighted images, which are available for each studied perfusion MR dataset. (2) We used the publicly available FSL toolbox to strip off the non-brain structures from the T1- and T2-weighted MR images...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28013293/deficient-tsc1-tsc2-complex-suppression-of-sox9-osteopontin-akt-signalling-cascade-constrains-tumour-growth-in-tuberous-sclerosis-complex
#18
Fuquan Jin, Keguo Jiang, Shuang Ji, Li Wang, Zhaofei Ni, Fuqiang Huang, Chunjia Li, Rongrong Chen, Hongbing Zhang, Zhongdong Hu, Xiaojun Zha
Tuberous sclerosis complex (TSC) is an autosomal dominant genetic disorder featured with multi-organ benign tumours. Disruption of TSC1/TSC2 complex suppression on mammalian/mechanistic target of rapamycin (mTOR) signalling causes TSC. Hyperactive mTOR-mediated negative feedback regulation of AKT partially contributes to the benign nature of TSC-associated tumours. In this study, we demonstrated that osteopontin (OPN) was dramatically reduced by loss of TSC1/TSC2 complex in Tsc2-null mouse embryonic fibroblasts (MEFs), rat uterine leiomyoma-derived Tsc2-deficient cells, genetically modified mouse TSC models, and clinical samples...
December 23, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/28009132/tract-specific-atrophy-in-focal-epilepsy-disease-genetics-or-seizures
#19
David N Vaughan, David Raffelt, Evan Curwood, Meng-Han Tsai, Jacques-Donald Tournier, Alan Connelly, Graeme D Jackson
OBJECTIVE: To investigate whether genetics, underlying pathology or repeated seizures contribute to atrophy in specific white matter tracts. METHODS: Medically-refractory unilateral temporal lobe epilepsy with hippocampal sclerosis (HS-TLE, n=26) was studied as an archetype of focal epilepsy, using fixel-based analysis of diffusion-weighted imaging. A genetic effect was assessed in first-degree relatives of HS-TLE who did not have epilepsy themselves (HS-1°Rel; n=26)...
December 23, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/28009079/acute-disseminated-encephalomyelitis-in-china-singapore-and-japan-a-comparison-with-the-usa
#20
D L H Koelman, D C Benkeser, Y Xu, S X Neo, K Tan, M Katsuno, G Sobue, J Natsume, S Chahin, S S Mar, A Venkatesan, T Chitnis, G M Hoganson, A K Yeshokumar, P Barreras, B Majmudar, M Carone, F J Mateen
BACKGROUND AND PURPOSE: Ethnicity-related differences in the incidence of acute disseminated encephalomyelitis (ADEM) and other demyelinating diseases including multiple sclerosis and neuromyelitis optica spectrum disorders have been reported. Little is reported on the influence of ethnicity and geographical location in ADEM. METHODS: Medical records of patients who presented with ADEM (ICD-9 323.61 and 323.81) at large referral hospitals in China, Singapore and Japan (years 1992-2015) were retrospectively reviewed and data were collected in a centralized database...
February 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
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