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https://www.readbyqxmd.com/read/28716886/clinical-neurology-and-epidemiology-of-the-major-neurodegenerative-diseases
#1
Michael G Erkkinen, Mee-Ohk Kim, Michael D Geschwind
Neurodegenerative diseases are a common cause of morbidity and cognitive impairment in older adults. Most clinicians who care for the elderly are not trained to diagnose these conditions, perhaps other than typical Alzheimer's disease (AD). Each of these disorders has varied epidemiology, clinical symptomatology, laboratory and neuroimaging features, neuropathology, and management. Thus, it is important that clinicians be able to differentiate and diagnose these conditions accurately. This review summarizes and highlights clinical aspects of several of the most commonly encountered neurodegenerative diseases, including AD, frontotemporal dementia (FTD) and its variants, progressive supranuclear palsy (PSP), corticobasal degeneration (CBD), Parkinson's disease (PD), dementia with Lewy bodies (DLB), multiple system atrophy (MSA), and Huntington's disease (HD)...
July 17, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28715425/elimination-of-huntingtin-in-the-adult-mouse-leads-to-progressive-behavioral-deficits-bilateral-thalamic-calcification-and-altered-brain-iron-homeostasis
#2
Paula Dietrich, Irudayam Maria Johnson, Shanta Alli, Ioannis Dragatsis
Huntington's Disease (HD) is an autosomal dominant progressive neurodegenerative disorder characterized by cognitive, behavioral and motor dysfunctions. HD is caused by a CAG repeat expansion in exon 1 of the HD gene that is translated into an expanded polyglutamine tract in the encoded protein, huntingtin (HTT). While the most significant neuropathology of HD occurs in the striatum, other brain regions are also affected and play an important role in HD pathology. To date there is no cure for HD, and recently strategies aiming at silencing HTT expression have been initiated as possible therapeutics for HD...
July 17, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28715119/lateral-prefrontal-orbitofrontal-cortex-has-different-roles-in-norm-compliance-in-gain-and-loss-domains-a-transcranial-current-stimulation-tdcs-study
#3
Yunlu Yin, Hongbo Yu, Zhongbin Su, Yuan Zhang, Xiaolin Zhou
Sanction is used by almost all known human societies to enforce fairness norm in resource distribution. Previous studies have consistently shown that the lateral prefrontal cortex (lPFC) and the adjacent orbitofrontal cortex (lOFC) play a causal role in mediating the effect of sanction threat on norm compliance. However, most of these studies were conducted in the gain domain in which resources are distributed among members. Little is known about the mechanisms underlying norm compliance in the loss domain in which individual sacrifices are needed...
July 17, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28714717/acetylcholine-contributes-to-the-integration-of-self-movement-cues-in-head-direction-cells
#4
Ryan M Yoder, Jeremy H M Chan, Jeffrey S Taube
Acetylcholine contributes to accurate performance on some navigational tasks, but details of its contribution to the underlying brain signals are not fully understood. The medial septal area provides widespread cholinergic input to various brain regions, but selective damage to medial septal cholinergic neurons generally has little effect on landmark-based navigation, or the underlying neural representations of location and directional heading in visual environments. In contrast, the loss of medial septal cholinergic neurons disrupts navigation based on path integration, but no studies have tested whether these path integration deficits are associated with disrupted head direction (HD) cell activity...
August 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28714545/focal-hemodynamic-responses-in-the-stimulated-hemisphere-during-high-definition-transcranial-direct-current-stimulation
#5
Makii Muthalib, Pierre Besson, John Rothwell, Stéphane Perrey
OBJECTIVE: High-definition transcranial direct current stimulation (HD-tDCS) using a 4 × 1 electrode montage has been previously shown using modeling and physiological studies to constrain the electric field within the spatial extent of the electrodes. The aim of this proof-of-concept study was to determine if functional near-infrared spectroscopy (fNIRS) neuroimaging can be used to determine a hemodynamic correlate of this 4 × 1 HD-tDCS electric field on the brain. MATERIALS AND METHODS: In a three session cross-over study design, 13 healthy males received one sham (2 mA, 30 sec) and two real (HD-tDCS-1 and HD-tDCS-2, 2 mA, 10 min) anodal HD-tDCS targeting the left M1 via a 4 × 1 electrode montage (anode on C3 and 4 return electrodes 3...
July 17, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28714271/influence-of-residual-renal-function-in-carotid-modeling-as-a-marker-of-early-atherosclerosis-in-dialysis-patients
#6
Merita Rroji, Nereida Spahia, Saimir Seferi, Myftar Barbullushi, Goce Spasovski
Atherosclerosis is frequently present in patients with chronic kidney disease (CKD) treated with dialysis. We evaluated the association between residual renal function (RRF), phosphate level, inflammation and other risk factors in carotid modeling as a marker of early atherosclerosis in peritoneal dialysis (PD) compared with hemodialysis (HD) patients. We studied 39 stable PD and 53 HD patients on renal replacement therapy (RRT) for 3 to 36 months duration. B-mode ultrasonography was used to determine carotid artery intima media thickness (CIMT)...
July 17, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28713411/physiological-biochemical-epigenetic-and-molecular-analyses-of-wheat-triticum-aestivum-genotypes-with-contrasting-salt-tolerance
#7
Suresh Kumar, A S Beena, Monika Awana, Archana Singh
Abiotic stress exerts significant impact on plant's growth, development, and productivity. Productivity of crop plants under salt stress is lagging behind because of our limited knowledge about physiological, biochemical, epigenetic, and molecular mechanisms of salt tolerance in plants. This study aimed to investigate physio-biochemical, molecular indices and defense responses of selected wheat cultivars to identify the most contrasting salt-responsive genotypes and the mechanisms associated with their differential responses...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28712946/dissociation-between-decision-making-under-risk-and-decision-making-under-ambiguity-in-premanifest-and-manifest-huntington-s-disease
#8
Najia Adjeroud, Jeremy Besnard, Christophe Verny, Adriana Prundean, Clarisse Scherer, Bénédicte Gohier, Dominique Bonneau, Nicole El Massioui, Philippe Allain
We investigated decision-making under ambiguity (DM-UA) and decision making under risk (DM-UR) in individuals with premanifest and manifest Huntington's disease (HD). Twenty individuals with premanifest HD and 23 individuals with manifest HD, on one hand, and 39 healthy individuals divided into two control groups, on the other, undertook a modified version of the Iowa Gambling Task (IGT), an adaptation of a DM-UA task, and a modified version of the Game of Dice Task (GDT), an adaptation of a DM-UR task. Participants also filled in a questionnaire of impulsivity and responded to cognitive tests specifically designed to assess executive functions...
July 13, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28712341/genetic-analysis-of-bactrocera-zonata-diptera-tephritidae-populations-from-india-based-on-cox1-and-nad1-gene-sequences
#9
Jaipal S Choudhary, Naiyar Naaz, Moanaro Lemtur, Bikash Das, Arun Kumar Singh, Bhagwati P Bhatt, Chandra S Prabhakar
The peach fruit fly, Bactrocera zonata, is among the most serious and polyphagous insect pest of fruit crops in many parts of the world under genus Bactrocera. In the present study, the genetic structure, diversity and demographic history of B. zonata in India were inferred from mitochondrial cytochrome oxidase 1 (cox1) and NADH dehydrogenase 1 (nad1) sequences. The efficiency of DNA barcodes for identification of B. zonata was also tested. Genetic diversity indices [number of haplotypes (H), haplotype diversity (Hd), nucleotide diversity (π) and average number of nucleotide differences (k)] of B...
July 15, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/28711962/the-relation-between-hemoglobin-variability-and-carotid-intima-media-thickness-in-chronic-hemodialysis-patients
#10
Safa Ersen Ganidagli, Orcun Altunoren, Ertuğrul Erken, Ismet Onder Isık, Berivan Ganidagli, Necmi Eren, Yasemin Coskun Yavuz, Ozkan Gungor
PURPOSE: Hemoglobin variability is a common problem among hemodialysis patients. We have previously demonstrated an association between Hb variability and left ventricular mass index. In this study, we investigated a possible relation between Hb variability and carotid intima-media thickness (CIMT). METHODS: Twelve-month hemoglobin (Hb) values of 135 patients on maintenance hemodialysis were examined retrospectively. The range of 11-12 gr/dl was accepted as normal according to the KDOQI guidelines...
July 15, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28711509/listeria-monocytogenes-pdee-a-phosphodiesterase-that-contributes-to-virulence-and-has-hydrolytic-activity-against-cyclic-mononucleotides-and-cyclic-dinucleotides
#11
Swetha Reddy, Gokul Turaga, Hossam Abdelhamed, Michelle M Banes, Robert W Wills, Mark L Lawrence
We have identified and partially characterized a putative HD domain hydrolase, LMOf2365_2464, which is highly expressed during listerial intracellular replication. LMOf2365_2464 is annotated as a putative HD domain-containing hydrolase. The ability of an isogenic mutant strain, F2365Δ2464, to adhere, invade and replicate in intestinal epithelial cells (Caco-2) was significantly lower than parent strain F2365. Colonization of mouse liver and spleen by L. monocytogenes F2365 was significantly higher than it was for the mutant...
July 12, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28711243/genetic-correlations-between-the-cumulative-pseudo-survival-rate-milk-yield-and-somatic-cell-score-during-lactation-in-holstein-cattle-in-japan-using-a-random-regression-model
#12
O Sasaki, M Aihara, A Nishiura, H Takeda
Trends in genetic correlations between longevity, milk yield, and somatic cell score (SCS) during lactation in cows are difficult to trace. In this study, changes in the genetic correlations between milk yield, SCS, and cumulative pseudo-survival rate (PSR) during lactation were examined, and the effect of milk yield and SCS information on the reliability of estimated breeding value (EBV) of PSR were determined. Test day milk yield, SCS, and PSR records were obtained for Holstein cows in Japan from 2004 to 2013...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28708742/physical-therapy-and-exercise-interventions-in-huntington-s-disease-a-mixed-methods-systematic-review-protocol
#13
Lori Quinn, Monica Busse, Judith Carrier, Nora Fritz, Jane Harden, Lynda Hartel, Deb Kegelmeyer, Anne Kloos, Ashwini Rao
The review seeks to evaluate the effectiveness of physical therapy and exercise interventions in Huntington's disease (HD). The review question is: What is the effectiveness of physiotherapy and therapeutic exercise interventions in people with HD, and what are patients', families' and caregivers' perceptions of these interventions?The specific objectives are:This mixed methods review seeks to develop an aggregated synthesis of quantitative, qualitative and narrative systematic reviews on physiotherapy and exercise interventions in HD, in an attempt to derive conclusions and recommendations useful for clinical practice and policy decision-making...
July 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28708214/hypomagnesemia-and-cause-specific-mortality-in-hemodialysis-patients-5-year-follow-up-analysis
#14
Gjulsen N Selim, Goce Spasovski, Liljana Tozija, Ljubica Georgievska-Ismail, Beti Zafirova-Ivanovska, Jelka Masin-Spasovska, Irena Rambabova-Busletic, Zvezdana Petronijevic, Pavlina Dzekova-Vidimliski, Vesna Ristovska, Vladimir Pusevski, Olivera Stojceva-Taneva
INTRODUCTION: The aim of this prospective study was to evaluate the association between serum magnesium (Mg) and mortality, in particular the cause-specific mortality of Mg and other risk factors in hemodialysis (HD) patients. METHODS: We studied a cohort of 185 HD patients receiving thrice-weekly HD treatment, on a dialysate Mg concentration of 0.5 mmol/L. We stratified 3 patient groups according to the level of Mg: lower (<1.1 mmol/L), intermediate-reference (1...
July 1, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28707349/assessment-of-bioresorbable-scaffold-with-a-novel-high-definition-60%C3%A2-mhz-ivus-imaging-system-comparison-with-40-mhz-ivus-referenced-to-optical-coherence-tomography
#15
Kozo Okada, Hideki Kitahara, Yoshiaki Mitsutake, Shigemitsu Tanaka, Takumi Kimura, Paul G Yock, Peter J Fitzgerald, Fumiaki Ikeno, Yasuhiro Honda
BACKGROUND: In vivo assessment of bioresorbable scaffold (BRS) is of growing clinical interest. The novel 60MHz high-definition intravascular ultrasound (HD-IVUS) has been developed to overcome the limitations of conventional 40 MHz IVUS. This study aimed to evaluate the performance and limitations of 60 MHz HD-IVUS compared with 40 MHz IVUS with respect to polymeric-strut visualization, quantitative and qualitative analysis, and feasibility of high-speed pullback in the assessment of BRS...
July 14, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28707330/the-impact-of-dialysis-modality-and-membrane-characteristics-on-intradialytic-hypotension
#16
Samir Patel, Jochen G Raimann, Peter Kotanko
The risk of intradialytic hypotension (IDH) is determined by various factors, among them dialysis modality and dialyzer membrane. We conducted a literature search in PubMed on November 1, 2016 and selected relevant randomized controlled and cross-over trials, and prospective and retrospective cohort studies published in English that investigated the association between IDH and dialysis modality and membrane, respectively. This literature search revealed 669 publications on dialysis modality, 64 on dialysis membrane, and 24 on acetate/bicarbonate dialysate...
July 13, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28706199/defective-sphingosine-1-phosphate-metabolism-is-a-druggable-target-in-huntington-s-disease
#17
Alba Di Pardo, Enrico Amico, Abdul Basit, Andrea Armirotti, Piyush Joshi, Diana M Neely, Romina Vuono, Salvatore Castaldo, Anna F Digilio, Francesco Scalabrì, Giuseppe Pepe, Francesca Elifani, Michele Madonna, Se Kyoo Jeong, Bu-Mahn Park, Maurizio D'Esposito, Aaron B Bowman, Roger A Barker, Vittorio Maglione
Huntington's disease is characterized by a complex and heterogeneous pathogenic profile. Studies have shown that disturbance in lipid homeostasis may represent a critical determinant in the progression of several neurodegenerative disorders. The recognition of perturbed lipid metabolism is only recently becoming evident in HD. In order to provide more insight into the nature of such a perturbation and into the effect its modulation may have in HD pathology, we investigated the metabolism of Sphingosine-1-phosphate (S1P), one of the most important bioactive lipids, in both animal models and patient samples...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28704813/serum-ferritin-variations-and-mortality-in-incident-hemodialysis-patients
#18
Taehee Kim, Elani Streja, Melissa Soohoo, Connie M Rhee, Rieko Eriguchi, Tae Woo Kim, Tae Ik Chang, Yoshitsugu Obi, Csaba P Kovesdy, Kamyar Kalantar-Zadeh
BACKGROUND: Higher serum ferritin levels may be influenced by iron use and inflammation, and are associated with higher mortality in hemodialysis (HD) patients. We hypothesized that a major rise in serum ferritin is associated with a higher risk of mortality, irrespective of baseline serum ferritin in incident HD patients. METHODS: In a cohort of 93,979 incident HD patients between 2007 and 2011, we examined the association of change in serum ferritin from the baseline patient quarter (first 91 days from dialysis start) to the subsequent quarter with mortality...
July 14, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28703894/comparison-of-resting-energy-equations-and-total-energy-expenditure-in-haemodialysis-patients-and-body-composition-measured-by-multi-frequency-bioimpedance
#19
Ben Oliveira, Sivakumar Sridharan, Ken Farrington, Andrew Davenport
BACKGROUND: Waste products of metabolism are retained in haemodialysis (HD) patients. Cellular metabolism generates energy, and patients with greater energy expenditure may therefore require more dialysis. To determine the amount of dialysis required, equations estimating resting and total energy expenditure (REE,TEE) are required. METHODS: We compared estimates of REE in HD patients using established equations with a novel equation recently validated in HD patients (HD equation)...
July 13, 2017: Nephrology
https://www.readbyqxmd.com/read/28703336/a-genome-wide-association-study-reveals-candidate-genes-for-the-supernumerary-nipple-phenotype-in-sheep-ovis-aries
#20
W-F Peng, S-S Xu, X Ren, F-H Lv, X-L Xie, Y-X Zhao, M Zhang, Z-Q Shen, Y-L Ren, L Gao, M Shen, J Kantanen, M-H Li
Genome-wide association studies (GWASs) have been widely applied in livestock to identify genes associated with traits of economic interest. Here, we conducted the first GWAS of the supernumerary nipple phenotype in Wadi sheep, a native Chinese sheep breed, based on Ovine Infinium HD SNP BeadChip genotypes in a total of 144 ewes (75 cases with four teats, including two normal and two supernumerary teats, and 69 control cases with two teats). We detected 63 significant SNPs at the chromosome-wise threshold. Additionally, one candidate region (chr1: 170...
July 12, 2017: Animal Genetics
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