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https://www.readbyqxmd.com/read/28214264/identification-of-candidate-cerebrospinal-fluid-biomarkers-in-parkinsonism-using-quantitative-proteomics
#1
N K Magdalinou, A J Noyce, R Pinto, E Lindstrom, J Holmén-Larsson, M Holtta, K Blennow, H R Morris, T Skillbäck, T T Warner, A J Lees, I Pike, M Ward, H Zetterberg, J Gobom
INTRODUCTION: Neurodegenerative parkinsonian syndromes have significant clinical and pathological overlap, making early diagnosis difficult. Cerebrospinal fluid (CSF) biomarkers may aid the differentiation of these disorders, but other than α-synuclein and neurofilament light chain protein, which have limited diagnostic power, specific protein biomarkers remain elusive. OBJECTIVES: To study disease mechanisms and identify possible CSF diagnostic biomarkers through discovery proteomics, which discriminate parkinsonian syndromes from healthy controls...
January 31, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28214172/does-successful-rotator-cuff-repair-improve-muscle-atrophy-and-fatty-infiltration-of-the-rotator-cuff-a-retrospective-magnetic-resonance-imaging-study-performed-shortly-after-surgery-as-a-reference
#2
Noritaka Hamano, Atsushi Yamamoto, Hitoshi Shitara, Tsuyoshi Ichinose, Daisuke Shimoyama, Tsuyoshi Sasaki, Tsutomu Kobayashi, Yohei Kakuta, Toshihisa Osawa, Kenji Takagishi
BACKGROUND: Muscle atrophy and fatty infiltration in the rotator cuff muscles are often observed in patients with chronic rotator cuff tears. The recovery from these conditions has not been clarified. METHODS: Ninety-four patients were included in this study. The improvement in muscle atrophy and fatty infiltration in successfully repaired rotator cuff tears was evaluated by magnetic resonance imaging at 1 year and 2 years after surgery and was compared with muscle atrophy and fatty infiltration observed on magnetic resonance imaging at 2 weeks after surgery to discount any changes due to the medial retraction of the torn tendon...
February 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28214042/erosive-pustular-dermatosis-of-the-scalp-clinical-trichoscopic-and-histopathologic-features-of-20-cases
#3
Michela Starace, Camilla Loi, Francesca Bruni, Aurora Alessandrini, Cosimo Misciali, Annalisa Patrizi, Bianca Maria Piraccini
BACKGROUND: Erosive pustular dermatosis of the scalp is a chronic eruption that leads to scarring alopecia. OBJECTIVE: The clinical, dermoscopic, and histopathological features and the course of the disease in 20 patients were reviewed and compared with the reports in the literature. METHODS: Gender, age at diagnosis, age at onset, duration, topography, predisposing factors, concomitant diseases, trichoscopy, histology, treatment, and outcome were taken into consideration...
February 14, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28213864/electrical-stimulation-of-denervated-rat-skeletal-muscle-ameliorates-bone-fragility-and-muscle-loss-in-early-stage-disuse-musculoskeletal-atrophy
#4
Hiroyuki Tamaki, Kengo Yotani, Futoshi Ogita, Keishi Hayao, Kouki Nakagawa, Kazuhiro Sugawara, Hikari Kirimoto, Hideaki Onishi, Norikatsu Kasuga, Noriaki Yamamoto
We tested whether daily muscle electrical stimulation (ES) can ameliorate the decrease in cortical bone strength as well as muscle and bone geometric and material properties in the early stages of disuse musculoskeletal atrophy. 7-week-old male F344 rats were randomly divided into three groups: age-matched control group (Cont); a sciatic denervation group (DN); and a DN + direct electrical stimulation group (DN + ES). Denervated tibialis anterior (TA) muscle in the DN + ES group received ES with 16 mA at 10 Hz for 30 min/day, 6 days/week...
February 17, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28213439/tau-and-%C3%AE-amyloid-are-associated-with-medial-temporal-lobe-structure-function-and-memory-encoding-in-normal-aging
#5
Shawn M Marks, Samuel N Lockhart, Suzanne L Baker, William J Jagust
Normal aging is associated with decline in episodic memory, and also with aggregation of the β-amyloid (Aβ) and tau proteins and atrophy of medial temporal lobe structures crucial to memory formation. While some evidence suggests that Aβ is associated with aberrant neural activity, the relationships between these two aggregated proteins, neural function, and brain structure are poorly understood. Using in vivo human Aβ and tau imaging, we demonstrate that increased Aβ and tau are both associated with aberrant functional magnetic resonance imaging activity in the medial temporal lobes during memory encoding in cognitively normal older adults...
February 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28213437/%C3%AE-synuclein-multiple-system-atrophy-prions
#6
Amanda L Woerman, Joel C Watts, Atsushi Aoyagi, Kurt Giles, Lefkos T Middleton, Stanley B Prusiner
Multiple system atrophy (MSA) is a rapidly progressive neurodegenerative disease arising from the misfolding and accumulation of the protein α-synuclein in oligodendrocytes, where it forms glial cytoplasmic inclusions (GCIs). Several years of studying synthetic α-synuclein fibrils has provided critical insight into the ability of α-synuclein to template endogenous protein misfolding, giving rise to fibrillar structures capable of propagating from cell to cell. However, more recent studies with MSA-derived α-synuclein aggregates have shown that they have a similar ability to undergo template-directed propagation, like PrP prions...
February 17, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28213435/genetics-of-synucleinopathies
#7
Robert L Nussbaum
Parkinson's disease (PD), diffuse Lewy body disease (DLBD), and multiple system atrophy (MSA) constitute the three major neurodegenerative disorders referred to as synucleinopathies because both genetic and pathological results implicate the α-synuclein protein in their pathogenesis. PD and DLBD are recognized as closely related diseases with substantial clinical and pathological overlap. MSA, on the other hand, has a distinctive clinical presentation and neuropathological profile. In this review, we will summarize the evidence linking α-synuclein to these three disorders...
February 17, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28213071/pla2g6-accumulates-in-lewy-bodies-in-park14-and-idiopathic-parkinson-s-disease
#8
Yasuo Miki, Kunikazu Tanji, Fumiaki Mori, Akiyoshi Kakita, Hitoshi Takahashi, Koichi Wakabayashi
The histopathological hallmark of Parkinson's disease (PD) and dementia with Lewy bodies (DLB) is the occurrence of insoluble fibrillary aggregates known as Lewy bodies, in which phosphorylated α-synuclein (α-syn) is a major component. To date, familial PD-linked gene products, including α-syn, parkin, PINK-1, DJ-1 and LRRK2, are known to be involved in Lewy body formation. Phospholipase A2, group VI (PLA2G6) is the causative gene for PARK14-linked parkinsonism (PARK14), a familial form of juvenile-onset dystonia parkinsonism...
February 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28212893/traffic-related-air-pollution-impact-on-mouse-brain-accelerates-myelin-and-neuritic-aging-changes-with-specificity-for-ca1-neurons
#9
Nicholas C Woodward, Payam Pakbin, Arian Saffari, Farimah Shirmohammadi, Amin Haghani, Constantinos Sioutas, Mafalda Cacciottolo, Todd E Morgan, Caleb E Finch
Traffic-related air pollution (TRAP) is associated with lower cognition and reduced white matter volume in older adults, specifically for particulate matter <2.5-μm diameter (PM2.5). Rodents exposed to TRAP have shown microglial activation and neuronal atrophy. We further investigated age differences of TRAP exposure, with focus on hippocampus for neuritic atrophy, white matter degeneration, and microglial activation. Young- and middle-aged mice (3 and 18 months female C57BL/6J) were exposed to nanoscale-PM (nPM, <0...
January 13, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28211206/variable-familial-exudative-vitreoretinopathy-in-a-family-harbouring-variants-in-both-fzd4-and-tspan12
#10
Patrik Schatz, Arif O Khan
PURPOSE: To report a family affected by familial exudative vitreoretinopathy (FEVR) in which more severe disease phenotypes segregated with digenic rather than monogenic variants in FEVR-related genes. METHODS: Phenotype was documented with high-resolution imaging of retinal structure and wide-field fundus photography. Next-generation sequencing (NGS) of known genes involved in FEVR was performed. RESULTS: Three affected individuals within a family with FEVR presented with variable disease severity...
February 16, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28211034/infectious-complications-as-the-leading-cause-of-death-after-kidney-transplantation-analysis-of-more-than-10-000-transplants-from-a-single-center
#11
Flávio de Castro Rodrigues Ferreira, Marina Pontello Cristelli, Mayara Ivani Paula, Henrique Proença, Claudia Rosso Felipe, Helio Tedesco-Silva, José Osmar Medina-Pestana
AIM: To identify specific causes of graft failure in a large sample of kidney transplant patients from a middle-income, developing country. METHODS: Retrospective cohort study analyzing all consecutive single kidney transplants (KTs) performed at a single center in Brazil between January 1st 1998 and December 31st 2013. The database closing date was December 31st 2014. RESULTS: Out of 10,400 KTs, there were 1191 (11.45%) deaths with a functioning graft, 40 cases (0...
February 17, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28210455/morphea-en-coup-de-sabre-an-unusual-oral-presentation
#12
Sven Niklander, Constanza Marín, René Martínez, Alfredo Esguep
Morphea, or localized scleroderma, is an inflammatory disease that leads to sclerosis of the skin and underlying tissues due to excessive collagen deposition. Oral involvement is unusual and it may produce white linear fibrotic areas with a scar-like appearance, atrophy of tongue papillae, gingival recession and alveolar bone resorption. We report a case of a 13-year-old girl who consulted for progressive recession on the attached gingiva of her upper left incisors. She also presented a hypopigmented line on the left side skin of her upper lip, which continued through the vermilion and the lip mucosa, including the gingiva of the affected teeth...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210174/anterior-segment-optical-coherence-tomography-changes-with-introduction-and-discontinuation-of-tamsulosin
#13
Abdullah Al-Kharashi, Amir A Azimzadeh, Jerry Leung, Sidney Radomski, Lenny Radomski, Wai-Ching Lam
PURPOSE: The aim of this study was to quantify changes and reversibility in pupil dilation and iris dilator muscle region thickness associated with introduction and subsequent discontinuation of tamsulosin in patients naïve to this drug with the aid of an anterior OCT system. METHODS: The study was carried out on 7 patients (14 eyes) naïve to tamsulosin and with benign prostatic hypertrophy (BHP). Measurements taken by Vistante OCT were done pre- and post-dilation of the following: pupil size, iris dilator muscle region (DMR) thickness, sphincter muscle region (SMR) thickness, and anterior chamber depth...
July 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28209439/post-polio-syndrome-cases-report-and-review-of-literature
#14
Żanna Pastuszak, Adam Stępień, Kazimierz Tomczykiewicz, Renata Piusińska-Macoch, Dariusz Galbarczyk, Agnieszka Rolewska
It is estimated that around 15 million people survived polio infection worldwide since early twentieth century. In 1950 effective vaccination was used for first time. Since that time number of affected people decreased. The last epidemic of Haine-Medine disease in Poland was in 1950s. Another rare cases of infections were observed till 1970s. About at least 15 years after polio virus infection, slowly progressive muscle limbs paresis with muscle atrophy, joints pain, paresthesia were observed in polio survivors...
February 3, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28209438/excessive-daytime-sleepiness-in-a-patient-with-coexisting-myotonic-dystrophy-type-1-myasthenia-gravis-and-graves-disease
#15
Katarzyna Kapica-Topczewska, Robert Pogorzelski, Joanna Tarasiuk, Wiesław Drozdowski, Piotr Lewczuk, Alina Kułakowska
A 41-year-old female with history of Graves' disease, bilateral cataract, paroxysmal atrial fibrillation was admitted because of muscle weakness, daytime sleepiness, fatigability, drowsiness, bilateral eyelid ptosis, descending of head and lower jaw. On neurological examination the patient was presented with muscle weakness, muscle atrophy (in face and sternocleidomastoid muscles), features of myotonia and apocamnosis (orbicular muscles). Electromyography revealed myopathic changes, myotonic and pseudomyotonic discharges, positive repetitive nerve stimulation test in proximal muscles...
February 3, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28208212/the-function-of-the-ocelloid-and-piston-in-the-dinoflagellate-erythropsidinium-gymnodiniales-dinophyceae
#16
Fernando Gómez
The marine dinoflagellate Erythropsidinium possesses an ocelloid, the most elaborate photoreceptor organelle known in a unicellular organism, and a piston, a fast contractile appendage unknown in any other organism. The ocelloid is able to rotate, often before the cell swims. The ocelloid contains lenses that function to concentrate light. The flagellar propulsion is atrophied, and the piston is responsible for locomotion through successive extensions and contractions. During the 'locomotion mode', the contraction is ~4 times faster than the extension...
February 16, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28208139/mri-based-neuroanatomical-predictors-of-dysphagia-dysarthria-and-aphasia-in-patients-with-first-acute-ischemic-stroke%C3%A2
#17
Heather L Flowers, Mohammed A AlHarbi, David Mikulis, Frank L Silver, Elizabeth Rochon, David Streiner, Rosemary Martino
BACKGROUND: Due to the high post-stroke frequency of dysphagia, dysarthria, and aphasia, we developed comprehensive neuroanatomical, clinical, and demographic models to predict their presence after acute ischemic stroke. METHODS: The sample included 160 randomly selected first-ever stroke patients with confirmed infarction on magnetic resonance imaging from 1 tertiary stroke center. We documented acute lesions within 12 neuroanatomical regions and their associated volumes...
February 16, 2017: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/28208063/white-matter-lesions-and-the-cholinergic-deficit-in-aging-and-mild-cognitive-impairment
#18
Nils Richter, Anne Michel, Oezguer A Onur, Lutz Kracht, Markus Dietlein, Marc Tittgemeyer, Bernd Neumaier, Gereon R Fink, Juraj Kukolja
In Alzheimer's disease (AD), white matter lesions (WMLs) are associated with an increased risk of progression from mild cognitive impairment (MCI) to dementia, while memory deficits have, at least in part, been linked to a cholinergic deficit. We investigated the relationship between WML load assessed with the Scheltens scale, cerebral acetylcholinesterase (AChE) activity measured with [(11)C]N-methyl-4-piperidyl acetate PET, and neuropsychological performance in 17 patients with MCI due to AD and 18 cognitively normal older participants...
January 18, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28207840/using-the-hephaistos-orthotic-device-to-study-countermeasure-effectiveness-of-neuromuscular-electrical-stimulation-and-dietary-lupin-protein-supplementation-a-randomised-controlled-trial
#19
Jochen Zange, Kathrin Schopen, Kirsten Albracht, Darius A Gerlach, Petra Frings-Meuthen, Nicola A Maffiuletti, Wilhelm Bloch, Jörn Rittweger
PURPOSE: The present study investigated whether neuromuscular electrical stimulation for 20 min twice a day with an electrode placed over the soleus muscle and nutritional supplementation with 19 g of protein rich lupin seeds can reduce the loss in volume and strength of the human calf musculature during long term unloading by wearing an orthotic unloading device. METHODS: Thirteen healthy male subjects (age of 26.4 ± 3.7 years) wore a Hephaistos orthosis one leg for 60 days during all habitual activities...
2017: PloS One
https://www.readbyqxmd.com/read/28207803/side-effects-induced-by-the-acute-levodopa-challenge-in-parkinson-s-disease-and-atypical-parkinsonisms
#20
Rosario Vasta, Alessandra Nicoletti, Giovanni Mostile, Valeria Dibilio, Giorgia Sciacca, Donatella Contrafatto, Calogero Edoardo Cicero, Loredana Raciti, Antonina Luca, Mario Zappia
INTRODUCTION: Acute levodopa challenge may be performed to predict levodopa chronic responsiveness. The aim of the study was to investigate frequency of side effects during the acute levodopa challenge in PD and atypical parkinsonisms. METHODS: We enrolled 34 de novo PD patients and 29 patients affected by atypical parkinsonisms (Multiple System Atrophy, MSA, n = 10; Progressive Supranuclear Palsy, PSP, n = 12 and Corticobasal Degeneration, CBD, n = 7) who underwent an acute levodopa challenge...
2017: PloS One
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