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https://www.readbyqxmd.com/read/29135480/mechanical-surface-area-of-prosthetic-heart-valve-adverse-clinical-impact-of-large-mechanical-valve-in-mitral-position
#1
Yang Hyun Cho, Kiick Sung, Wook Sung Kim, Jae-Hun Kim, Sung Mok Kim, Pyo Won Park
Although thromboembolic accidents are serious adverse events associated with mechanical mitral valves, there have been no studies on the clinical impact of the large mechanical surface areas (MSAs) of mechanical mitral prostheses. Between 1995 and 2010, 488 consecutive adult patients underwent isolated mechanical mitral valve replacement. We measured the MSA via three-dimensional computed tomography for each prosthesis. Mean patient age was 50.6 ± 11.1 years. The mean body surface area (BSA) and MSA index (MSAI, MSA/BSA) were 1...
November 8, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29128630/association-analysis-of-snp-rs11868035-in-srebf1-with-sporadic-parkinson-s-disease-sporadic-amyotrophic-lateral-sclerosis-and-multiple-system-atrophy-in-a-chinese-population
#2
Xiao Qin Yuan, Bei Cao, Ying Wu, Yong Ping Chen, Qian Qian Wei, Ru Wei Ou, Jing Yang, Xue Ping Chen, Bi Zhao, Wei Song, Hui Fang Shang
BACKGROUND: The etiology of neurodegenerative disease remains unclear. Recently, SNP rs11868035, located in an intron of the sterol regulatory element binding factor (SREBF1) gene, was found to be associated with Parkinson's disease (PD) in a large European population in a genome-wide association study. To examine the possible genetic association of rs11868035 with sporadic PD, sporadic amyotrophic lateral sclerosis (ALS) and multiple system atrophy (MSA) in a Chinese population, we conducted this large case-control study...
November 8, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29126761/mr-planimetry-in-neurodegenerative-parkinsonism-yields-high-diagnostic-accuracy-for-psp
#3
Stephanie Mangesius, Anna Hussl, Florian Krismer, Philipp Mahlknecht, Eva Reiter, Susanne Tagwercher, Atbin Djamshidian, Michael Schocke, Regina Esterhammer, Gregor Wenning, Christoph Müller, Christoph Scherfler, Elke R Gizewski, Werner Poewe, Klaus Seppi
INTRODUCTION: Several previous studies examined different brainstem-derived MR planimetric measures with regards to their diagnostic accuracy in separating patients with neurodegenerative parkinsonian disorders and reported conflicting results. The current study aimed to compare their performance in a well-characterized sample of patients with neurodegenerative parkinsonian disorders. METHODS: MR planimetric measurements were assessed in a large retrospective cohort of 55 progressive supranuclear palsy (PSP), 194 Parkinson's disease (PD) and 63 multiple system atrophy (MSA) patients...
October 31, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29124503/urological-dysfunction-in-synucleinopathies-epidemiology-pathophysiology-and-management
#4
REVIEW
Ryuji Sakakibara, Fuyuki Tateno, Tatsuya Yamamoto, Tomoyuki Uchiyama, Tomonori Yamanishi
OBJECTIVE: Parkinson's disease (PD) and multiple system atrophy (MSA) are major neurogenerative diseases characterized pathologically by abnormal alpha-synuclein aggregation. PD and MSA are clinically characterized by motor disorder and bladder dysfunction (mainly urinary urgency and frequency, also called overactive bladder). However, few literatures are available concerning bladder dysfunction in PD or MSA. METHOD: A systematic review. RESULTS: The bladder dysfunction in MSA is more severe than that in PD for large post-void residual or urinary retention...
November 9, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29118735/divergent-thinking-in-parkinsonism-a-case-control-study
#5
Margherita Canesi, Maria Luisa Rusconi, Emanuele Cereda, Alessandra Ranghetti, Viviana Cereda, Federica Moroni, Gianni Pezzoli
Background: Creativity is a multidimensional phenomenon and an important component of human capacities. This ability is characterized by the involvement of several cognitive functions particularly linked to the prefrontal cortex. We compared divergent thinking, a measure of creativity, in patients affected by progressive supranuclear palsy (PSP), other parkinsonian syndromes, and healthy controls (HCs). Methods: Creativity features were evaluated using the Abbreviated Torrance Test for Adults (ATTA)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29116822/multiple-sequence-alignment-based-on-a-suffix-tree-and-center-star-strategy-a-linear-method-for-multiple-nucleotide-sequence-alignment-on-spark-parallel-framework
#6
Wenhe Su, Xiangke Liao, Yutong Lu, Quan Zou, Shaoliang Peng
Multiple sequence alignment (MSA) is an essential prerequisite and dominant method to deduce the biological facts from a set of molecular biological sequences. It refers to a series of algorithmic solutions for the alignment of evolutionarily related sequences while taking into account evolutionary events such as mutations, insertions, deletions, and rearrangements under certain conditions. These methods can be applied to DNA, RNA, or protein sequences. In this work, we take advantage of a center-star strategy to reduce the MSA problem to pairwise alignments, and we use a suffix tree to match identical substrings between two pairwise sequences...
November 8, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/29116402/a-critical-review-of-the-prion-hypothesis-of-human-synucleinopathies
#7
REVIEW
Gültekin Tamgüney, Amos D Korczyn
Parkinson's disease (PD), dementia with Lewy bodies (DLB), and multiple system atrophy (MSA) are neurodegenerative disorders which have been pathologically classified as synucleinopathies, since they are associated with pathognomonic deposits of misfolded alpha-synuclein in cells of the nervous system. Recently PD, DLB, and MSA were also suggested to be prion-like disorders. Much controversy exists regarding this analogy between synucleinopathies and prion diseases. Here, we discuss what characterizes prion diseases and in which way synucleinopathies may be considered prion-like or -unlike...
November 8, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/29115515/serum-microrna-expression-profiling-in-patients-with-multiple-system-atrophy
#8
Kodai Kume, Hisakazu Iwama, Kazushi Deguchi, Kazuyo Ikeda, Tadayuki Takata, Yohei Kokudo, Masaki Kamada, Keiko Fujikawa, Kayo Hirose, Hisashi Masugata, Tetsuo Touge, Tsutomu Masaki
Multiple system atrophy (MSA) is a sporadic neurodegenerative disease that is pathologically characterized by α‑synuclein positive glial cytoplasmic inclusions in oligodendrocytes. The clinical diagnosis of MSA is often challenging as there are no established biomarkers and diagnoses are now based on clinical findings alone. At present, the etiology and pathogenesis of MSA are unclear. It has been reported that dysregulation of microRNA (miRNA/miR) serves an important role in neurodegenerative disorders including Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis...
November 7, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29111419/diagnosis-of-multiple-system-atrophy
#9
REVIEW
Jose-Alberto Palma, Lucy Norcliffe-Kaufmann, Horacio Kaufmann
Multiple system atrophy (MSA) may be difficult to distinguish clinically from other disorders, particularly in the early stages of the disease. An autonomic-only presentation can be indistinguishable from pure autonomic failure. Patients presenting with parkinsonism may be misdiagnosed as having Parkinson disease. Patients presenting with the cerebellar phenotype of MSA can mimic other adult-onset ataxias due to alcohol, chemotherapeutic agents, lead, lithium, and toluene, or vitamin E deficiency, as well as paraneoplastic, autoimmune, or genetic ataxias...
October 23, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29111028/csf-biomarkers-%C3%AE-amyloid-tau-proteins-and-a-synuclein-in-the-differential-diagnosis-of-parkinson-plus-syndromes
#10
Vasilios C Constantinides, George P Paraskevas, Evangelia Emmanouilidou, Olga Petropoulou, Anastasia Bougea, Kostas Vekrellis, Ioannis Evdokimidis, Eleftherios Stamboulis, Elisabeth Kapaki
INTRODUCTION: Differential diagnosis of Parkinson-plus patients (PSP, CBD, MSA) and Parkinson's disease (PD) patients is often not straightforward, particularly in atypical cases or at the initial stages of the diseases. Classic CSF biomarkers (amyloid-beta - Aβ42, tau protein - τT and phosphorylated tau protein - τP-181) are established biomarkers in the diagnosis of Alzheimer's disease (AD). CSF a-synuclein (α-syn) has emerged as a promising biomarker in patients with Parkinsonism...
November 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29109994/macroscopic-supramolecular-assembly-to-fabricate-multiplexed-dna-patterns-for-potential-application-in-dna-chips
#11
Mengjiao Cheng, Yingwei Zhang, Song Wang, Feng Shi
Macroscopic supramolecular assembly (MSA) is a newly established methodology to construct supramolecular materials directly from large building blocks. Demonstrations of MSA for various functions are urgently needed to advance MSA from fundamental studies to practical uses. Here we propose the fabrication of DNA microarrays by combining MSA and magnetic-assisted localization.
November 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/29109293/ion-pair-particles-at-the-air-water-interface
#12
Manoj Kumar, Joseph S Francisco
Although the role of methanesulfonic acid (HMSA) in particle formation in the gas phase has been extensively studied, the details of the HMSA-induced ion pair particle formation at the air-water interface are yet to be examined. In this work, we have performed Born-Oppenheimer molecular dynamics simulations and density functional theory calculations to investigate the ion pair particle formation from HMSA and (R1)(R2)NH (for NH3, R1 = R2 = H; for CH3NH2, R1 = H and R2 = CH3; and for CH3NH2, R1 = R2 = CH3) at the air-water interface...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29107645/cerebrospinal-fluid-levels-of-coenzyme-q10-are-reduced-in-multiple-system-atrophy
#13
Yaroslau Compta, Darly M Giraldo, Esteban Muñoz, Francesca Antonelli, Manel Fernández, Paloma Bravo, Marta Soto, Ana Cámara, Ferran Torres, María José Martí
INTRODUCTION: The finding of mutations of the COQ2 gene and reduced coenzyme Q10 levels in the cerebellum in multiple system atrophy (MSA) suggest that coenzyme Q10 is relevant to MSA pathophysiology. Two recent studies have reported reduced coenzyme Q10 levels in plasma and serum (respectively) of MSA patients compared to Parkinson's disease and/or control subjects, but with largely overlapping values, limited comparison with other parkinsonisms, or dependence on cholesterol levels. We hypothesized that cerebrospinal fluid (CSF) is reliable to assess reductions in coenzyme Q10 as a candidate biomarker of MSA...
October 20, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29093980/the-importance-of-connection-to-others-in-qol-in-msa-and-psp
#14
Louise Wiblin, Rory Durcan, Mark Lee, Katie Brittain
Multiple System Atrophy (MSA) and Progressive Supranuclear Palsy (PSP) are atypical Parkinsonian disorders with extended morbidity and reduced lifespan, known to have marked and early impact upon quality of life (QoL). This study aimed to address the lack of studies in the literature regarding personal perspectives on QoL in MSA and PSP in both patients and carers. Participants took part in qualitative, in-depth interviews in the North East of England, exploring what impacts their QoL and their experiences of living with these complex conditions...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/29089869/microrna-101-modulates-autophagy-and-oligodendroglial-alpha-synuclein-accumulation-in-multiple-system-atrophy
#15
Elvira Valera, Brian Spencer, Jennifer Mott, Margarita Trejo, Anthony Adame, Michael Mante, Edward Rockenstein, Juan C Troncoso, Thomas G Beach, Eliezer Masliah, Paula Desplats
Synucleinopathies, neurodegenerative disorders with alpha-synuclein (α-syn) accumulation, are the second leading cause of neurodegeneration in the elderly, however no effective disease-modifying alternatives exist for these diseases. Multiple system atrophy (MSA) is a fatal synucleinopathy characterized by the accumulation of toxic aggregates of α-syn within oligodendroglial cells, leading to demyelination and neurodegeneration, and the reduction of this accumulation might halt the fast progression of MSA...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29066238/ocular-features-of-multiple-system-atrophy
#16
Maria D Garcia, Jose S Pulido, Elizabeth A Coon, John J Chen
The aim of this paper is to gain better understanding of the ocular manifestations of multiple system atrophy (MSA), a neurodegenerative disorder rarely studied in terms of its ophthalmologic features. We performed a retrospective case series (1/1/05-12/31/14) to search for patients seen at Mayo Clinic, Rochester, MN, who had mention of MSA in the medical record and an eye examination, which yielded 285 cases. Of the 285, we identified 39 cases of true MSA. Each of these 39 patients was further reviewed for ocular abnormalities potentially related to MSA...
October 21, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29065703/safety-and-effectiveness-of-transarterial-embolization-for-splenic-artery-hemorrhage-in-patients-undergoing-radical-gastrectomy
#17
Kichang Han, Man-Deuk Kim, Michael Diffley, Joon Ho Kwon, Gyoung Min Kim, Woosun Choi, Yong Seek Kim, Junhyung Lee, Jong Yun Won, Do Yun Lee
Background Perigastric lymph nodes are dissected during gastrectomy, potentially resulting in life-threatening postoperative bleeding. Purpose To evaluate the safety and effectiveness of transarterial embolization (TAE) for bleeding from the splenic artery in patients who underwent gastrectomy. Material and Methods Between January 2004 and December 2016, 14,523 patients underwent gastrectomy at our institution, and ten patients (nine men; mean age = 64.7 years; age range = 51-80 years) underwent TAE for postoperative bleeding from the splenic artery...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/29062093/photonics-based-real-time-ultra-high-range-resolution-radar-with-broadband-signal-generation-and-processing
#18
Fangzheng Zhang, Qingshui Guo, Shilong Pan
Real-time and high-resolution target detection is highly desirable in modern radar applications. Electronic techniques have encountered grave difficulties in the development of such radars, which strictly rely on a large instantaneous bandwidth. In this article, a photonics-based real-time high-range-resolution radar is proposed with optical generation and processing of broadband linear frequency modulation (LFM) signals. A broadband LFM signal is generated in the transmitter by photonic frequency quadrupling, and the received echo is de-chirped to a low frequency signal by photonic frequency mixing...
October 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29058561/implementing-a-multi-sectoral-response-to-hiv-a-case-study-of-aids-councils-in-the-mpumalanga-province-south-africa
#19
Pinky Mahlangu, Jo Vearey, Liz Thomas, Jane Goudge
BACKGROUND: A multi-sectoral response is advocated by international organisations as a good strategy to address the multiple drivers and impact of human immunodeficiency virus/acquired immune deficiency syndrome (HIV/AIDS), and was historically mandated as a condition of funding. In March 2017, the South African National AIDS Council (SANAC) launched the latest 5 year National Strategic Plan (NSP) to address HIV, sexually transmitted infections and tuberculosis. As with previous iterations, the NSP calls for multi-sectoral action (MSA) and mandates AIDS councils (ACs) at different levels to coordinate its implementation...
2017: Global Health Action
https://www.readbyqxmd.com/read/29058121/multiple-system-atrophy-experimental-models-and-reality
#20
REVIEW
Cassia Overk, Edward Rockenstein, Elvira Valera, Nadia Stefanova, Gregor Wenning, Eliezer Masliah
Multiple system atrophy (MSA) is a rapidly progressing fatal synucleinopathy of the aging population characterized by parkinsonism, dysautonomia, and in some cases ataxia. Unlike other synucleinopathies, in this disorder the synaptic protein, α-synuclein (α-syn), predominantly accumulates in oligodendroglial cells (and to some extent in neurons), leading to maturation defects of oligodendrocytes, demyelination, and neurodegeneration. The mechanisms through which α-syn deposits occur in oligodendrocytes and neurons in MSA are not completely clear...
October 20, 2017: Acta Neuropathologica
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