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neurofilaments

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https://www.readbyqxmd.com/read/29142138/chitotriosidase-chit1-is-increased-in-microglia-and-macrophages-in-spinal-cord-of-amyotrophic-lateral-sclerosis-and-cerebrospinal-fluid-levels-correlate-with-disease-severity-and-progression
#1
Petra Steinacker, Federico Verde, Lubin Fang, Emily Feneberg, Patrick Oeckl, Sigrun Roeber, Sarah Anderl-Straub, Adrian Danek, Janine Diehl-Schmid, Klaus Fassbender, Klaus Fliessbach, Hans Foerstl, Armin Giese, Holger Jahn, Jan Kassubek, Johannes Kornhuber, G Bernhard Landwehrmeyer, Martin Lauer, Elmar Hans Pinkhardt, Johannes Prudlo, Angela Rosenbohm, Anja Schneider, Matthias L Schroeter, Hayrettin Tumani, Christine A F von Arnim, Jochen Weishaupt, Patrick Weydt, Albert C Ludolph, Deniz Yilmazer Hanke, Markus Otto
OBJECTIVES: Neurochemical markers of amyotrophic lateral sclerosis (ALS) that reflect underlying disease mechanisms might help in diagnosis, staging and prediction of outcome. We aimed at determining the origin and differential diagnostic and prognostic potential of the putative marker of microglial activation chitotriosidase (CHIT1). METHODS: Altogether 316 patients were included, comprising patients with sporadic ALS, ALS mimics (disease controls (DCo)), frontotemporal lobar degeneration (FTLD), Creutzfeldt-Jakob disease (CJD), Alzheimer's disease (AD), Parkinson's disease (PD) and healthy controls (Con)...
November 15, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29116449/comparative-pulvinar-organization-across-different-primate-species
#2
Ricardo Gattass, Juliana G M Soares, Bruss Lima
In this chapter, we compare the pattern of pulvinar immunohistochemical staining for the calcium-binding proteins calbindin and parvalbumin and for the neurofilament protein SMI-32 in macaque, capuchin, and squirrel monkeys. This group of New and Old World primates shares five similar pulvinar subdivisions: PIP, PIM, PIC, PIL, and PILS. In the Old World macaque monkey, the inferior-lateral pulvinar can be subdivided into the P1 and P2 fields based on its connectivity with visual area V1. On the other hand, only the P1 field and no P2 was found in the New World capuchin monkey...
2018: Advances in Anatomy, Embryology, and Cell Biology
https://www.readbyqxmd.com/read/29111817/structural-ultrastructural-and-morphometric-study-of-the-zebrafish-ocular-surface-a-model-for-human-corneal-diseases
#3
Domenico Puzzolo, Antonina Pisani, Consuelo Malta, Giuseppe Santoro, Alessandro Meduri, Francesco Abbate, Giuseppe Montalbano, Edward Wylegala, Rosa Alba Rana, Fabio Bucchieri, Antonio Ieni, Pasquale Aragona, Antonio Micali
PURPOSE: A morphological and morphometric study of the adult zebrafish ocular surface was performed to provide a comprehensive description of its parts and to evaluate its similarity to the human. MATERIALS AND METHODS: The eyes of adult zebrafish were processed for light, transmission and scanning electron microscopy, and for immunohistochemical stain of corneal nerves; a morphometric analysis was also performed on several morphological parameters. RESULTS: The corneal epithelium was formed by five layers of cells...
November 7, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29108879/remyelination-modulators-in-multiple-sclerosis-patients
#4
Rabeah Al-Temaimi, Jehad AbuBaker, Irina Al-Khairi, Raed Alroughani
Multiple Sclerosis (MS) is a complex autoimmune neuro-inflammatory disorder characterized by persistent MS plaques in the central nervous system. Resolution of MS plaques is dependent on the remyelination competence of surviving oligodendrocytes and surrounding environment. Here, we assessed myelination modulators in a 100 MS patients against 77 healthy controls. Plasma fractions were used for the assessment of insulin growth factor binding protein1 (IGFBP1), brain-derived neurotrophic factor (BDNF), and lipocalin2 (LCN2) using a Luminex multiplex assay, whereas neurofilament light chain (NF-L) was assessed with an enzyme-linked immunosorbent assay...
November 8, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29106428/modified-acellular-nerve-delivering-pmscs-improve-functional-recovery-in-rats-after-complete-spinal-cord-transection
#5
Ting Tian, Zhenhai Yu, Naili Zhang, Yingwei Chang, Yuqiang Zhang, Luping Zhang, Shuai Zhou, Chunlei Zhang, Guoying Feng, Fei Huang
Due to the poor regeneration capacity of neurons and the inhibitory microenvironment, spontaneous regeneration in spinal cord injury (SCI) remains challenging. Tissue engineering is considered a promising approach for enhancing the regeneration of SCI by reconstructing the inherent structure and improving the microenvironment. In this study, the possibility of engineering a nerve complex, which is constructed by acellular nerve delivering placenta mesenchymal stem cells (PMSCs), was assessed for the recovery of a transected spinal cord...
November 6, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/29096697/race-modifies-the-relationship-between-cognition-and-alzheimer-s-disease-cerebrospinal-fluid-biomarkers
#6
Jennifer C Howell, Kelly D Watts, Monica W Parker, Junjie Wu, Alexander Kollhoff, Thomas S Wingo, Cornelya D Dorbin, Deqiang Qiu, William T Hu
BACKGROUND: African Americans have been reported to have a higher prevalence of Alzheimer's disease (AD) than Caucasians, but etiology-specific AD biomarkers have not been systematically analyzed in older African Americans. Coexisting cerebrovascular disease may also contribute to this increased prevalence. We hypothesized that cerebrospinal fluid (CSF) biomarkers of amyloid, neurodegeneration, and endothelial dysfunction would differ between older African Americans and Caucasians with normal cognition and cognitive impairment associated with AD...
November 2, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/29079686/monitoring-disease-activity-in-multiple-sclerosis-using-serum-neurofilament-light-protein
#7
Lenka Novakova, Henrik Zetterberg, Peter Sundström, Markus Axelsson, Mohsen Khademi, Martin Gunnarsson, Clas Malmeström, Anders Svenningsson, Tomas Olsson, Fredrik Piehl, Kaj Blennow, Jan Lycke
OBJECTIVE: To examine the effects of disease activity, disability, and disease-modifying therapies (DMTs) on serum neurofilament light (NFL) and the correlation between NFL concentrations in serum and CSF in multiple sclerosis (MS). METHODS: NFL concentrations were measured in paired serum and CSF samples (n = 521) from 373 participants: 286 had MS, 45 had other neurologic conditions, and 42 were healthy controls (HCs). In 138 patients with MS, the serum and CSF samples were obtained before and after DMT treatment with a median interval of 12 months...
October 27, 2017: Neurology
https://www.readbyqxmd.com/read/29076871/olfactory-epithelial-hamartoma-a-new-subtype-of-sinonasal-hamartoma
#8
Myriam Kossai, Sophie El Zein, Michel Wassef, Jean-Pierre Guichard, Christelle Pouliquen, Philippe Herman, Benjamin Vérillaud, Marion Classe
Sinonasal epithelial hamartomas occurring in adults are classified as seromucinous hamartoma (SMH) or respiratory epithelial adenomatoid hamartoma (REAH). We describe herein a novel subtype of adult sinonasal hamartoma that contains olfactory epithelium, a histologic feature not previously reported in the literature. Our pathology department database was retrospectively searched for sinonasal hamartomas containing areas of olfactory epithelium. Six relevant cases (3 male and 3 female patients; age, 30 to 77 y) were retrieved, and available pathology slides and clinical and imaging data from patient charts were reviewed...
October 26, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29074982/neurofilament-light-protein-in-csf-and-blood-is-associated-with-neurodegeneration-and-disease-severity-in-huntington-s-disease-r6-2-mice
#9
Rana Soylu-Kucharz, Åsa Sandelius, Marie Sjögren, Kaj Blennow, Edward J Wild, Henrik Zetterberg, Maria Björkqvist
There is an unmet need to reliably and non-invasively monitor disease progression in preclinical Huntington's disease (HD) models. As a marker of axonal damage, neurofilament light chain (NfL) has been suggested a marker for neurodegeneration. NfL concentrations in blood and CSF were recently shown to have prognostic value for clinical HD progression and brain atrophy. We therefore hypothesized that CSF and blood NfL concentrations could be useful preclinical HD markers, reflecting underlying pathology. To test our hypothesis we utilized the R6/2 mouse model of HD and measured NfL concentrations in CSF and serum using the ultrasensitive Single molecule array (Simoa) platform...
October 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29073233/transcriptional-and-post-translational-changes-in-the-brain-of-mice-deficient-in-cholesterol-removal-mediated-by-cytochrome-p450-46a1-cyp46a1
#10
Natalia Mast, Joseph B Lin, Kyle W Anderson, Ingemar Bjorkhem, Irina A Pikuleva
Cytochrome P450 46A1 (CYP46A1) converts cholesterol to 24-hydroxycholesterol and thereby controls the major pathways of cholesterol removal from the brain. Cyp46a1-/- mice have a reduction in the rate of cholesterol biosynthesis in the brain and significant impairments to memory and learning. To gain insights into the mechanisms underlying Cyp46a1-/- phenotype, we used Cyp46a1-/- mice and quantified their brain sterol levels and the expression of the genes pertinent to cholesterol homeostasis. We also compared the Cyp46a1-/- and wild type brains for protein phosphorylation and ubiquitination...
2017: PloS One
https://www.readbyqxmd.com/read/29070663/neurofilaments-in-blood-almost-facing-clinical-application
#11
EDITORIAL
Michelle M Mielke, Markus Otto
No abstract text is available yet for this article.
October 25, 2017: Neurology
https://www.readbyqxmd.com/read/29070659/serum-neurofilament-light-in-familial-alzheimer-disease-a-marker-of-early-neurodegeneration
#12
Philip S J Weston, Teresa Poole, Natalie S Ryan, Akshay Nair, Yuying Liang, Kirsty Macpherson, Ronald Druyeh, Ian B Malone, R Laila Ahsan, Hugh Pemberton, Jana Klimova, Simon Mead, Kaj Blennow, Martin N Rossor, Jonathan M Schott, Henrik Zetterberg, Nick C Fox
OBJECTIVES: To investigate whether serum neurofilament light (NfL) concentration is increased in familial Alzheimer disease (FAD), both pre and post symptom onset, and whether it is associated with markers of disease stage and severity. METHODS: We recruited 48 individuals from families with PSEN1 or APP mutations to a cross-sectional study: 18 had symptomatic Alzheimer disease (AD) and 30 were asymptomatic but at 50% risk of carrying a mutation. Serum NfL was measured using an ultrasensitive immunoassay on the single molecule array (Simoa) platform...
October 25, 2017: Neurology
https://www.readbyqxmd.com/read/29069985/neural-autoantibodies-in-patients-with-neurological-symptoms-and-histories-of-chemical-mold-exposures
#13
Mohamed Bahie Abou-Donia, Allan Lieberman, Luke Curtis
A number of studies have linked exposures to industrial and household chemicals and biological toxins to increased risk of autoimmunity in general and elevated levels of autoantibodies to neural antigens specifically. Elevated neural autoantibodies are biomarkers for many diseases such as multiple sclerosis and Parkinson's disease. Our study reports levels of six types of neural autoantibodies in a group of 24 toxicant-exposed patients. The patients were exposed to a variety of toxicants including contaminated drinking water (four patients), building water/mold damage (eight patients), pesticides (four patients), and other assorted toxic chemicals (eight patients)...
January 1, 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29068494/fluid-biomarkers-for-microglial-activation-and-axonal-injury-in-multiple-sclerosis
#14
REVIEW
H Zetterberg
Although it is clear that the immune system is an important disease driver in multiple sclerosis (MS), it is presently unknown what initiates the process. Infections have been mentioned as potential triggers, which is specifically dealt with in other articles of this volume. Here, I give an overview of two fluid biomarkers that reflect key elements of the MS process: microglial activation (cerebrospinal fluid [CSF] sTREM2) and axonal injury (CSF and serum/plasma neurofilament light). I review recent data on how these markers are altered in MS, how they change in relation to disease progression and treatment and, finally, how they can be used as tools in MS research...
November 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29067334/effect-of-physical-exercise-on-markers-of-neuronal-dysfunction-in-cerebrospinal-fluid-in-patients-with-alzheimer-s-disease
#15
Camilla Steen Jensen, Erik Portelius, Peter Høgh, Lene Wermuth, Kaj Blennow, Henrik Zetterberg, Steen Gregers Hasselbalch, Anja Hviid Simonsen
INTRODUCTION: Physical exercise has gained increasing focus as a potential mean to maintain cognitive function in patients with Alzheimer's disease (AD). Alongside the markers of specific AD pathology (amyloid β and tau), other pathologies such as neuronal damage and synaptic loss have been proposed as markers of the disease. Here, we study the effect of physical exercise on biomarkers of neuronal and synaptic integrity. METHODS: Cerebrospinal fluid (CSF) from 51 AD subjects who participated in the randomized controlled trial Preserving Cognition, Quality of Life, Physical Health and Functional Ability in Alzheimer's Disease: The Effect of Physical Exercise (ADEX) was analyzed for the concentration of neurofilament light (NFL), neurogranin (Ng), visinin-like protein-1 (VILIP-1), and chitinase-3-like protein 1 (YKL-40)...
June 2017: Alzheimer's & Dementia: Translational Research & Clinical Interventions
https://www.readbyqxmd.com/read/29065845/identification-of-electrophysiological-changes-in-alzheimer-s-disease-a-microarray-based-transcriptomics-and-molecular-pathway-analysis-study
#16
Zeenat Mirza, Nisreen Rajeh
Involvement of amyloid beta and tau proteins in pathogenesis of Alzheimer's disease (AD) has been studied extensively. However, electrophysiological activity, and cellular processes like membrane transport are mostly unstudied. Electrophysiological processes provide a bridge between brain activity and cognition, and show promise as translatable biomarkers in preclinical and clinical applications. Biochemical imbalance leads to change in glutamate-based neurotransmission, antioxidant capacity, and in membrane polarization-repolarization events, eventually, resulting in AD...
October 23, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/29064543/effect-of-valproic-acid-administration-during-pregnancy-on-postnatal-development-of-cerebellar-cortex-and-the-possible-protective-role-of-folic-acid
#17
Saber I Shona, Ayman A Rizk, Abir O El Sadik, Hossam Y Emam, Eid N Ali
BACKGROUND: Valproic acid (VPA), one of the most important antiepileptic drugs (AEDs), is proved to be inevitable for epileptic pregnant women to limit the hazards of convulsions on the fetuses and mothers. Periconceptional folic acid supplementation was investigated to protect against several birth defects. However, its role against VPA cerebellar toxicity was not properly investigated. AIM: The present study was conducted to evaluate the protective effect of folic acid against VPA cerebellar neurotoxicity...
October 24, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29061384/motoneuron-degeneration-in-the-trigeminal-motor-nucleus-innervating-the-masseter-muscle-in-dystonia-musculorum-mice
#18
M Ibrahim Hossain, Masao Horie, Nozomu Yoshioka, Masayuki Kurose, Kensuke Yamamura, Hirohide Takebayashi
Dystonia musculorum (dt) mice, which have a mutation in the Dystonin (Dst) gene, are used as animal models to investigate the human disease known as hereditary sensory and autonomic neuropathy type VI. Massive neuronal cell death is observed, mainly in the peripheral nervous system (PNS) of dt mice. We and others have recently reported a histopathological feature of these mice that neurofilament (NF) accumulates in various areas of the central nervous system (CNS), including motor pathways. Although dt mice show motor disorder and growth retardation, the causes for these are still unknown...
October 20, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/29059309/elevated-intraocular-pressure-induces-amyloid-%C3%AE-deposition-and-tauopathy-in-the-lateral-geniculate-nucleus-in-a-monkey-model-of-glaucoma
#19
Zhichao Yan, Huanquan Liao, Hongrui Chen, Shuifeng Deng, Yu Jia, Caibin Deng, Jianxian Lin, Jian Ge, Yehong Zhuo
Purpose: Recent evidence has suggested a potential association between Alzheimer's disease (AD) and glaucoma and found significant deposition of amyloid-β (Aβ) and Tau protein in the retinas of glaucoma patients. However, no coherent finding has emerged regarding the AD-like changes in the central visual system (CVS). Studies confirming the presence of Aβ and Tau neuropathology are warranted to identify the underlying mechanism that contributes to the visual impairment observed in glaucoma...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29058589/translational-evidence-for-two-distinct-patterns-of-neuroaxonal-injury-in-sepsis-a-longitudinal-prospective-translational-study
#20
Johannes Ehler, Lucinda K Barrett, Valerie Taylor, Michael Groves, Francesco Scaravilli, Matthias Wittstock, Stephan Kolbaske, Annette Grossmann, Jörg Henschel, Martin Gloger, Tarek Sharshar, Fabrice Chretien, Francoise Gray, Gabriele Nöldge-Schomburg, Mervyn Singer, Martin Sauer, Axel Petzold
BACKGROUND: Brain homeostasis deteriorates in sepsis, giving rise to a mostly reversible sepsis-associated encephalopathy (SAE). Some survivors experience chronic cognitive dysfunction thought to be caused by permanent brain injury. In this study, we investigated neuroaxonal pathology in sepsis. METHODS: We conducted a longitudinal, prospective translational study involving (1) experimental sepsis in an animal model; (2) postmortem studies of brain from patients with sepsis; and (3) a prospective, longitudinal human sepsis cohort study at university laboratory and intensive care units (ICUs)...
October 23, 2017: Critical Care: the Official Journal of the Critical Care Forum
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