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https://www.readbyqxmd.com/read/28413156/exposure-of-the-amino-terminus-of-tau-is-a-pathological-event-in-multiple-tauopathies
#1
Benjamin Combs, Nicholas M Kanaan
Pathological changes to the tau protein, including conformational changes and aggregation, are major hallmarks of a group of neurodegenerative disorders known as tauopathies. Among the conformational changes are alterations involving the extreme amino terminus of the protein, known as the phosphatase-activating domain (PAD). Aberrant PAD exposure induces a signaling cascade that leads to disruption of axonal transport, a critical function for neuronal survival. Conformational display of PAD is an early marker of pathological tau in Alzheimer disease (AD), but its role in other tauopathies has yet to be firmly established...
April 13, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28410663/frontotemporal-dementia
#2
REVIEW
Nicholas T Olney, Salvatore Spina, Bruce L Miller
Frontotemporal dementia (FTD) is a heterogeneous disorder with distinct clinical phenotypes associated with multiple neuropathologic entities. Presently, the term FTD encompasses clinical disorders that include changes in behavior, language, executive control, and often motor symptoms. The core FTD spectrum disorders include behavioral variant FTD, nonfluent/agrammatic variant primary progressive aphasia, and semantic variant PPA. Related FTD disorders include frontotemporal dementia with motor neuron disease, progressive supranuclear palsy syndrome, and corticobasal syndrome...
May 2017: Neurologic Clinics
https://www.readbyqxmd.com/read/28402959/meta-analysis-of-the-association-between-variants-in-mapt-and-neurodegenerative-diseases
#3
REVIEW
Cheng-Cheng Zhang, Jun-Xia Zhu, Yu Wan, Lin Tan, Hui-Fu Wang, Jin-Tai Yu, Lan Tan
Microtubule-associated protein tau (MAPT) gene is compelling among the susceptibility genes of neurodegenerative diseases which include Alzheimer's disease (AD), Parkinson's disease (PD), progressive supranuclear palsy (PSP), corticobasal degeneration (CBD), frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS). Our meta-analysis aimed to find the association between MAPT and the risk of these diseases. Published literatures were retrieved from MEDLINE and other databases, and 82 case-control studies were recruited...
March 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28390475/corrigendum-to-gray-and-white-matter-structural-changes-in-corticobasal-syndrome-neurobiol-aging-37-2016-82-90
#4
Neeraj Upadhyay, Antonio Suppa, Maria Cristina Piattella, Flavio Di Stasio, Nikolaos Petsas, Claudio Colonnese, Carlo Colosimo, Alfredo Berardelli, Patrizia Pantano
No abstract text is available yet for this article.
May 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28389938/combined-visual-and-semi-quantitative-assessment-of-123-i-fp-cit-spect-for-the-diagnosis-of-dopaminergic-neurodegenerative-diseases
#5
Jun Ueda, Hajime Yoshimura, Keiji Shimizu, Megumu Hino, Nobuo Kohara
Visual and semi-quantitative assessments of (123)I-FP-CIT single-photon emission computed tomography (SPECT) are useful for the diagnosis of dopaminergic neurodegenerative diseases (dNDD), including Parkinson's disease, dementia with Lewy bodies, progressive supranuclear palsy, multiple system atrophy, and corticobasal degeneration. However, the diagnostic value of combined visual and semi-quantitative assessment in dNDD remains unclear. Among 239 consecutive patients with a newly diagnosed possible parkinsonian syndrome who underwent (123)I-FP-CIT SPECT in our medical center, 114 patients with a disease duration less than 7 years were diagnosed as dNDD with the established criteria or as non-dNDD according to clinical judgment...
April 7, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28386688/beyond-the-midbrain-atrophy-wide-spectrum-of-structural-mri-finding-in-cases-of-pathologically-proven-progressive-supranuclear-palsy
#6
REVIEW
Keita Sakurai, Aya M Tokumaru, Keigo Shimoji, Shigeo Murayama, Kazutomi Kanemaru, Satoru Morimoto, Ikuko Aiba, Motoo Nakagawa, Yoshiyuki Ozawa, Masashi Shimohira, Noriyuki Matsukawa, Yoshio Hashizume, Yuta Shibamoto
PURPOSE: Recently, it has been recognized that pathologically proven progressive supranuclear palsy (PSP) cases are classified into various clinical subtypes with non-uniform symptoms and imaging findings. This article reviews essential imaging findings, general information, and advanced magnetic resonance imaging (MRI) techniques for PSP and presents these MRI findings of pathologically proven typical and atypical PSP cases for educational purposes. METHODS: With the review of literatures, notably including atypical pathologically proven PSP cases, MRI and clinical information of 15 pathologically proven typical and atypical PSP cases were retrospectively evaluated...
April 6, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28378615/the-utility-of-fdg-pet-in-the-differential-diagnosis-of-parkinsonism
#7
Leposava Brajkovic, Vladimir Kostic, Dragana Sobic-Saranovic, Elka Stefanova, Milica Jecmenica-Lukic, Ana Jesic, Milica Stojiljkovic, Strahinja Odalovic, Francesca Gallivanone, Isabella Castiglioni, Branislava Radovic, Goran Trajkovic, Vera Artiko
INTRODUCTION: Differential diagnosis of parkinsonian disorders can be difficult on clinical grounds, especially in the early stage. Recent advancements in 18-F-fluorodeoxyglucose positron emission tomography (FDG-PET) imaging reveals different patterns of regional glucose metabolism in idiopathic Parkinson's disease (IPD) and atypical parkinsonian syndromes, such as multiple system atrophy (MSA), progressive supranuclear palsy (PSP) and corticobasal syndrome (CBS), which may help differentiating between these conditions...
April 5, 2017: Neurological Research
https://www.readbyqxmd.com/read/28370398/tau-aggregates-where-when-why-and-what-consequences
#8
EDITORIAL
Matthew P Frosch
Neuropathologists have been aware of neurofibrillary tangles for more than a century following their description as part of Alois Alzheimer's initial report. Since those early days, our understanding of the relationship of this particular type of cellular inclusion associated with neurodegeneration has continually broadened. Textbooks, now a partially antiquated concept, commonly list a range of disorders as being associated with tangles -NDASH- including typical neurodegenerative diseases (Alzheimer disease [AD], forms of frontotemporal lobar degenerations [FTLD-tau], progressive supranuclear palsy [PSP], corticobasal degeneration [CBD], primary aged related tauopathy [PART]), secondary degenerative diseases such as chronic traumatic encephalopathy, metabolic disease (Niemann-Pick disease type C) and infections (SSPE)...
April 2, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28370167/tau-aggregates-where-when-why-and-what-consequences
#9
EDITORIAL
Matthew P Frosch
Neuropathologists have been aware of neurofibrillary tangles for more than a century following their description as part of Alois Alzheimer's initial report. Since those early days, our understanding of the relationship of this particular type of cellular inclusion associated with neurodegeneration has continually broadened. Textbooks, now a partially antiquated concept, commonly list a range of disorders as being associated with tangles -NDASH- including typical neurodegenerative diseases (Alzheimer disease [AD], forms of frontotemporal lobar degenerations [FTLD-tau], progressive supranuclear palsy [PSP], corticobasal degeneration [CBD], primary aged related tauopathy [PART]), secondary degenerative diseases such as chronic traumatic encephalopathy, metabolic disease (Niemann-Pick disease type C) and infections (SSPE)...
March 30, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28360997/imaging-biomarkers-in-parkinson-s-disease-and-parkinsonian-syndromes-current-and-emerging-concepts
#10
REVIEW
Usman Saeed, Jordana Compagnone, Richard I Aviv, Antonio P Strafella, Sandra E Black, Anthony E Lang, Mario Masellis
Two centuries ago in 1817, James Parkinson provided the first medical description of Parkinson's disease, later refined by Jean-Martin Charcot in the mid-to-late 19th century to include the atypical parkinsonian variants (also termed, Parkinson-plus syndromes). Today, Parkinson's disease represents the second most common neurodegenerative disorder with an estimated global prevalence of over 10 million. Conversely, atypical parkinsonian syndromes encompass a group of relatively heterogeneous disorders that may share some clinical features with Parkinson's disease, but are uncommon distinct clinicopathological diseases...
2017: Translational Neurodegeneration
https://www.readbyqxmd.com/read/28322905/bilingualism-delays-the-onset-of-behavioral-but-not-aphasic-forms-of-frontotemporal-dementia
#11
Suvarna Alladi, Thomas H Bak, Mekala Shailaja, Divyaraj Gollahalli, Amulya Rajan, Bapiraju Surampudi, Michael Hornberger, Vasanta Duggirala, Jaydip Ray Chaudhuri, Subhash Kaul
Bilingualism has been found to delay onset of dementia and this has been attributed to an advantage in executive control in bilinguals. However, the relationship between bilingualism and cognition is complex, with costs as well as benefits to language functions. To further explore the cognitive consequences of bilingualism, the study used Frontotemporal dementia (FTD) syndromes, to examine whether bilingualism modifies the age at onset of behavioral and language variants of Frontotemporal dementia (FTD) differently...
March 18, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28318985/functional-disconnection-of-thalamic-and-cerebellar-dentate-nucleus-networks-in-progressive-supranuclear-palsy-and-corticobasal-syndrome
#12
Neeraj Upadhyay, Antonio Suppa, Maria Cristina Piattella, Costanza Giannì, Matteo Bologna, Flavio Di Stasio, Nikolaos Petsas, Francesca Tona, Giovanni Fabbrini, Alfredo Berardelli, Patrizia Pantano
AIM: To assess functional rearrangement following neurodegeneration in the thalamus and dentate nucleus in patients with progressive supranuclear palsy (PSP) and corticobasal syndrome (CBS). METHODS: We recruited 19 patients with PSP, 11 with CBS and 14 healthy subjects. All the subjects underwent resting-state (rs) fMRI using a 3T system. Whole brain functional connectivity of the thalamus and dentate nucleus were calculated by means of a seed-based approach with FEAT script in FSL toolbox...
March 15, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28318282/altered-resting-state-eeg-complexity-in-children-with-tourette-syndrome-a-preliminary-study
#13
Wen-Chin Weng, Chi-Feng Chang, Lee Chin Wong, Jui-Hsiang Lin, Wang-Tso Lee, Jiann-Shing Shieh
OBJECTIVE: Tourette syndrome is a developmental neuropsychiatric disorder in children, and abnormal corticobasal ganglion connectivity is implied for the pathophysiology. Multiscale entropy, an entropy-based method to measure dynamic complexity at multiple temporal scales, is helpful to disclose the information of brain connectivity. This preliminary study investigated the complexity of resting-state electroencephalogram signals using multiscale entropy in children with Tourette syndrome...
March 20, 2017: Neuropsychology
https://www.readbyqxmd.com/read/28293793/ultrasensitive-and-selective-detection-of-3-repeat-tau-seeding-activity-in-pick-disease-brain-and-cerebrospinal-fluid
#14
Eri Saijo, Bernardino Ghetti, Gianluigi Zanusso, Adrian Oblak, Jennifer L Furman, Marc I Diamond, Allison Kraus, Byron Caughey
The diagnosis and treatment of diseases involving tau-based pathology such as Alzheimer disease and certain frontotemporal dementias is hampered by the inability to detect pathological forms of tau with sufficient sensitivity, specificity and practicality. In these neurodegenerative diseases, tau accumulates in self-seeding filaments. For example, Pick disease (PiD) is associated with frontotemporal degeneration and accumulation of 3-repeat (3R) tau isoforms in filaments constituting Pick bodies. Exploiting the self-seeding activity of tau deposits, and using a 3R tau fragment as a substrate, we have developed an assay (tau RT-QuIC) that can detect tau seeds in 2 µl aliquots of PiD brain dilutions down to 10(-7)-10(-9)...
May 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28271184/shared-genetic-risk-between-corticobasal-degeneration-progressive-supranuclear-palsy-and-frontotemporal-dementia
#15
Jennifer S Yokoyama, Celeste M Karch, Chun C Fan, Luke W Bonham, Naomi Kouri, Owen A Ross, Rosa Rademakers, Jungsu Kim, Yunpeng Wang, Günter U Höglinger, Ulrich Müller, Raffaele Ferrari, John Hardy, Parastoo Momeni, Leo P Sugrue, Christopher P Hess, A James Barkovich, Adam L Boxer, William W Seeley, Gil D Rabinovici, Howard J Rosen, Bruce L Miller, Nicholas J Schmansky, Bruce Fischl, Bradley T Hyman, Dennis W Dickson, Gerard D Schellenberg, Ole A Andreassen, Anders M Dale, Rahul S Desikan
Corticobasal degeneration (CBD), progressive supranuclear palsy (PSP) and a subset of frontotemporal dementia (FTD) are neurodegenerative disorders characterized by tau inclusions in neurons and glia (tauopathies). Although clinical, pathological and genetic evidence suggests overlapping pathobiology between CBD, PSP, and FTD, the relationship between these disorders is still not well understood. Using summary statistics (odds ratios and p values) from large genome-wide association studies (total n = 14,286 cases and controls) and recently established genetic methods, we investigated the genetic overlap between CBD and PSP and CBD and FTD...
May 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28268100/intrafamilial-variable-phenotype-including-corticobasal-syndrome-in-a-family-with-p-p301l-mutation-in-the-mapt-gene-first-report-in-south-america
#16
Emilia M Gatto, Ricardo F Allegri, Gustavo Da Prat, Patricio Chrem Mendez, David S Hanna, Michael O Dorschner, Ezequiel I Surace, Cyrus P Zabetian, Ignacio F Mata
Frontotemporal lobar degeneration is a neuropathological disorder that causes a variety of clinical syndromes including frontotemporal dementia (FTD), progressive supranuclear palsy, and corticobasal syndrome (CBS). FTD associated with parkinsonism occurs frequently as a result of mutations in the C9orf72 gene and also in the genes coding for the protein associated with microtubule tau (MAPT) and progranulin (GRN) on chromosome 17 (FTDP-17). Herein, we report an Argentinean family, of Basque ancestry, with an extensive family history of behavioral variant of FTD...
May 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28259709/consensus-classification-of-posterior-cortical-atrophy
#17
Sebastian J Crutch, Jonathan M Schott, Gil D Rabinovici, Melissa Murray, Julie S Snowden, Wiesje M van der Flier, Bradford C Dickerson, Rik Vandenberghe, Samrah Ahmed, Thomas H Bak, Bradley F Boeve, Christopher Butler, Stefano F Cappa, Mathieu Ceccaldi, Leonardo Cruz de Souza, Bruno Dubois, Olivier Felician, Douglas Galasko, Jonathan Graff-Radford, Neill R Graff-Radford, Patrick R Hof, Pierre Krolak-Salmon, Manja Lehmann, Eloi Magnin, Mario F Mendez, Peter J Nestor, Chiadi U Onyike, Victoria S Pelak, Yolande Pijnenburg, Silvia Primativo, Martin N Rossor, Natalie S Ryan, Philip Scheltens, Timothy J Shakespeare, Aida Suárez González, David F Tang-Wai, Keir X X Yong, Maria Carrillo, Nick C Fox
INTRODUCTION: A classification framework for posterior cortical atrophy (PCA) is proposed to improve the uniformity of definition of the syndrome in a variety of research settings. METHODS: Consensus statements about PCA were developed through a detailed literature review, the formation of an international multidisciplinary working party which convened on four occasions, and a Web-based quantitative survey regarding symptom frequency and the conceptualization of PCA...
March 2, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28256434/pathologic-correlates-of-supranuclear-gaze-palsy-with-parkinsonism
#18
W R W Martin, J Hartlein, B A Racette, N Cairns, J S Perlmutter
INTRODUCTION: Supranuclear gaze palsy (SGP) is a classic clinical feature of progressive supranuclear palsy (PSP) but is not specific for this diagnosis and has been reported to occur in several other neurodegenerative parkinsonian conditions. Our objective was to evaluate the association between SGP and autopsy-proven diagnoses in a large population of patients with parkinsonism referred to a tertiary movement disorders clinic. METHODS: We reviewed clinical and autopsy data maintained in an electronic medical record from all patients seen in the Movement Disorders Clinic at Washington University, St...
May 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28244178/evaluation-of-an-optimized-18-f-fluoro-deoxy-glucose-positron-emission-tomography-voxel-wise-method-to-early-support-differential-diagnosis-in-atypical-parkinsonian-disorders
#19
S P Caminiti, P Alongi, L Majno, M A Volontè, C Cerami, L Gianolli, G Comi, D Perani
BACKGROUND AND PURPOSE: Atypical Parkinsonian disorders (APD) frequently overlap in clinical presentations, making the differential diagnosis challenging in the early stages. The present study aimed to evaluate the accuracy of the [(18) F]fluoro-deoxy-glucose positron emission tomography Statistical Parametric Mapping (SPM) optimized procedure in supporting the early and differential diagnosis of APD. METHODS: Seventy patients with possible APD were retrospectively included from a large clinical cohort...
February 28, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28243754/differentiation-of-atypical-parkinson-syndromes
#20
REVIEW
Günter U Höglinger, Jan Kassubek, Ilona Csoti, Reinhard Ehret, Heinz Herbst, Ingmar Wellach, Jürgen Winkler, Wolfgang H Jost
In distinction to idiopathic Parkinson's disease (PD), the diagnosis of atypical Parkinson syndromes comprises dementia with Lewy bodies (DLB), multiple system atrophy (MSA), progressive supranuclear palsy (PSP), and corticobasal degeneration (CBD). We set out to write a state-of-the-art guideline as to which investigations and examinations help to differentiate PD vs. atypical Parkinson syndromes in clinical routine.
February 27, 2017: Journal of Neural Transmission
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