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https://www.readbyqxmd.com/read/28445916/brain-regions-essential-for-word-comprehension-drawing-inferences-from-patients
#1
Argye E Hillis, Christopher Rorden, Julius Fridriksson
Lesion-deficit association studies are important as they can reveal brain regions essential for specific functions, but sometimes appear to yield conflicting results. We aimed to show how pitfalls of lesions studies can be avoided, and converging results obtained, illustrating from studies of the role of posterior superior temporal gyrus in auditory word comprehension. We review published lesion studies on auditory comprehension and present new data from both acute and chronic stroke that address weaknesses in some previous studies...
April 26, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28445885/patterns-of-microglial-cell-activation-in-alzheimer-disease-and-frontotemporal-lobar-degeneration
#2
Ricardo Taipa, Paulo Brochado, Andrew Robinson, Inês Reis, Patrício Costa, David M Mann, Manuel Melo Pires, Nuno Sousa
AIMS: Microglia-driven neuroinflammation can play an important role in the pathophysiology of neurodegenerative disorders. In this study, we sought to characterize the distribution of microglial cell activation in 2 neurodegenerative dementias with distinct protein signatures, Alzheimer disease (AD) and frontotemporal lobar degeneration (FTLD) of the TDP subtype, and to determine if there was an anatomical correlation with the phenotypes most commonly associated with these conditions...
April 27, 2017: Neuro-degenerative Diseases
https://www.readbyqxmd.com/read/28445721/nacho-mediates-nicotinic-acetylcholine-receptor-function-throughout-the-brain
#3
Jose A Matta, Shenyan Gu, Weston B Davini, Brian Lord, Edward R Siuda, Anthony W Harrington, David S Bredt
Neuronal nicotinic acetylcholine receptors (nAChRs) participate in diverse aspects of brain function and mediate behavioral and addictive properties of nicotine. Neuronal nAChRs derive from combinations of α and β subunits, whose assembly is tightly regulated. NACHO was recently identified as a chaperone for α7-type nAChRs. Here, we find NACHO mediates assembly of all major classes of presynaptic and postsynaptic nAChR tested. NACHO acts at early intracellular stages of nAChR subunit assembly and then synergizes with RIC-3 for receptor surface expression...
April 25, 2017: Cell Reports
https://www.readbyqxmd.com/read/28445276/correlation-between-prefrontal-striatal-pathway-impairment-and-cognitive-impairment-in-patients-with-leukoaraiosis
#4
Shuangkun Wang, Junliang Yuan, Xiaojuan Guo, Leilei Teng, Hua Jiang, Hua Gu, Wenli Hu, Tao Jiang
Our study aimed to investigate the changes of white matter microstructure of cortico-subcortical pathways using diffusion tensor imaging (DTI), and to explore the relationship between abnormal parameters of DTI and cognitive function underlying in patients with leukoaraiosis (LA).A total of 42 patients with LA and 42 age- and sex-matched healthy controls were recruited from Beijing Chaoyang Hospital, Capital Medical University between January 2012 and December 2012. All the subjects underwent scans of conventional magnetic resonance imaging and DTI, and a comprehensive neuropsychological battery was utilized...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28445148/pkc-and-camk-ii-inhibitions-coordinately-rescue-ischemia-induced-gabaergic-neuron-dysfunction
#5
Li Huang, Chun Wang, Shidi Zhao, Rongjing Ge, Sudong Guan, Jin-Hui Wang
Cerebral ischemia leads to neuronal death for stroke, in which the imbalance between glutamatergic neurons and GABAergic neurons toward neural excitotoxicity is presumably involved. GABAergic neurons are vulnerable to pathological factors and impaired in an early stage of ischemia. The rescue of GABAergic neurons is expected to be the strategy to reserve ischemic neuronal impairment. As protein kinase C (PKC) and calmodulin-dependent protein kinase II (CaMK-II) are activated during ischemia, we have investigated whether the inhibitions of these kinases rescue the ischemic impairment of cortical GABAergic neurons...
April 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28444949/voxel-based-morphometry-meta-analysis-of-gray-and-white-matter-finds-significant-areas-of-differences-in-bipolar-patients-from-healthy-controls
#6
REVIEW
Rossana Ganzola, Simon Duchesne
OBJECTIVE: We present a retrospective meta-analysis of voxel-based morphometry (VBM) of gray (GM) and white matter (WM) differences between patients with bipolar disorder (BD) and behaviorally healthy controls. METHODS: We used the activation likelihood estimation and Sleuth software for our meta-analysis, considering P-value maps at the cluster level inference of .05 with uncorrected P<.001. Results were visualized with the software MANGO. RESULTS: We included twenty-five articles in the analysis, and separated the comparisons where BD patients had lower GM or WM concentrations than controls (573 subjects, 21 experiments, and 117 locations/180 subjects, five experiments, and 15 locations, respectively) and the comparisons where BD patients had greater GM concentrations than controls (217 subjects, nine experiments, and 49 locations)...
April 26, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28444883/approaches-for-optimising-intravenous-iron-dosing-in-pregnancy-a-retrospective-cohort-study
#7
Luke E Grzeskowiak, Alaa Qassim, Bill Jeffries, Rosalie M Grivell
AIMS: To examine the relationship between dose of intravenous iron administered during pregnancy according to different maternal body weight measures and subsequent treatment response. METHODS: Retrospective cohort study of pregnant women with confirmed iron deficiency anaemia who received intravenous iron polymaltose at a tertiary teaching hospital in Australia from January 1(st) , 2014 to January 31(st) , 2016. Diagnosis of anaemia and/or iron deficiency, infusion dosage characteristics, and haematological parameters were collected from paper-based case notes and electronic records...
April 26, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28444850/emotion-dysregulation-in-hypochondriasis-and-depression
#8
Josef Bailer, Michael Witthöft, Maja Erkic, Daniela Mier
BACKGROUND: The aim of this study was to explore whether certain aspects of emotion dysregulation (i.e., facets of alexithymia and rumination) are more closely linked to hypochondriasis than to depression and vice versa. METHODS: Nineteen patients with hypochondriasis (HYP), 33 patients with depression, and 52 healthy control participants completed the Toronto Alexithymia Scale, the Response Styles Questionnaire, and additional symptom and illness behaviour scales...
April 26, 2017: Clinical Psychology & Psychotherapy
https://www.readbyqxmd.com/read/28444834/direct-and-indirect-effects-of-attention-and-visual-function-on-gait-impairment-in-parkinson-s-disease-influence-of-task-and-turning
#9
Samuel Stuart, Brook Galna, Louise S Delicato, Sue Lord, Lynn Rochester
Gait impairment is a core feature of Parkinson's disease (PD) which has been linked to cognitive and visual deficits, but interactions between these features are poorly understood. Monitoring saccades allows investigation of real-time cognitive and visual processes and their impact on gait when walking. This study explored; 1) saccade frequency when walking under different attentional manipulations of turning and dual-task; and 2) direct and indirect relationships between saccades, gait impairment, vision and attention...
April 26, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28444833/chronic-stress-induced-mechanical-hyperalgesia-is-controlled-by-capsaicin-sensitive-neurones-in-the-mouse
#10
B Scheich, P Vincze, É Szőke, É Borbély, Á Hunyady, J Szolcsányi, Á Dénes, Zs Környei, B Gaszner, Zs Helyes
BACKGROUND: Clinical studies demonstrated peripheral nociceptor deficit in stress-related chronic pain states, such as fibromyalgia. The interactions of stress and nociceptive systems have special relevance in chronic pain, but the underlying mechanisms including the role of specific nociceptor populations remain unknown. We investigated the role of capsaicin-sensitive neurones in chronic stress-related nociceptive changes. METHOD: Capsaicin-sensitive neurones were desensitized by the capsaicin analogue resiniferatoxin (RTX) in CD1 mice...
April 25, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28444766/endoplasmic-reticulum-stress-mediates-distinct-impacts-of-sevoflurane-on-different-subfields-of-immature-hippocampus
#11
Gang Zhu, Lei Tao, Ronglin Wang, Ying Xue, Xingqin Wang, Shaosong Yang, Xude Sun, Guodong Gao, Zixu Mao, Qian Yang
Sevoflurane, a typical inhaled anesthetic, is widely used in patients of all ages during surgery. The negative effects, such as inducing cell death and damaging spatial memory, of sevoflurane on neurodevelopment have raised increasing concerns in recent years. However, the molecular mechanism remains unclear. The current study focused on the crucial role of endoplasmic reticulum (ER) stress in sevoflurane-induced hippocampal injury. Three-week-old rats were exposed to sevoflurane or control air for 5h with or without ER stress inhibitor (4-phenylbutyric acid, 4-PBA) injection...
April 26, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28444684/-evaluation-and-treatment-of-sleep-problems-in-children-diagnosed-with-attention-deficit-hyperactivity-disorder-an-update-of-the-evidence
#12
REVIEW
M Chamorro, J P Lara, I Insa, M Espadas, J A Alda-Diez
INTRODUCTION: Attention deficit hyperactivity disorder (ADHD) affects approximately 5% of all children and adolescents, and these patients frequently suffer from sleep problems. The association between sleep disorders and ADHD, however, is multifaceted and complex. AIMS: To explore the relationship between sleep disorders and ADHD. DEVELOPMENT: Sleep problems in children with ADHD include altered sleep and specific disorders per se or that may be due to comorbid psychiatric disorders or to the stimulants they receive as treatment for their ADHD...
May 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28444680/-disability-after-stroke-a-longitudinal-study-in-moderate-and-severe-stroke-patients-included-in-a-multidisciplinary-rehabilitation-program
#13
E Noe-Sebastian, M Balasch-Bernat, C Colomer-Font, B Moliner-Munoz, C Rodriguez Sanchez-Leiva, P Ugart, R Llorens, J Ferri-Campos
INTRODUCTION: Stroke is a recognized cause of disability among adults. However the impact that the deficits that occur after a moderate/severe stroke have on long-term disability, as well as the response of the resultant deficits to rehabilitation, are not completely understood. PATIENTS AND METHODS: A total of 396 patients with a modified Rankin score >= 3 after an ischemic (n = 221) or hemorrhagic (n = 175) stroke were included in this study. All patients were assessed with cognitive, behavior, emotional, motor and functional domains...
May 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28444647/-partial-fasciectomy-and-options-of-reconstruction-using-local-flaps-in-cases-of-dupuytren-s-disease
#14
N Spindler, C Josten, S Langer
Aim: Partial fasciectomy in cases of grade III-IV Dupuytren's contracture and coverage of the defect with local flaps. Indication: Dupuytren's contracture is a progressive disease of the hand associated with the formation of fascial cords, which may result in flexion and adduction contractures of the fingers leading up to complete dysfunction of the hands. Method: If several fingers are affected, partial fasciectomy is the gold standard in the treatment of Dupuytren's contracture. Ideally, the fingers reach the neutral position after the fibres causing the contracture are resected and arthrolysis is performed as needed...
April 2017: Zentralblatt Für Chirurgie
https://www.readbyqxmd.com/read/28444603/physiological-functioning-of-lagerstroemia-speciosa-l-under-heavy-roadside-traffic-an-approach-to-screen-potential-species-for-abatement-of-urban-air-pollution
#15
H Singh, Savita, R Sharma, S Sinha, M Kumar, P Kumar, A Verma, S K Sharma
The mitigation potential of avenue tree species needs a sound understanding, especially for landscape planning or planting tree species on roadside, especially in city limits where there is huge traffic due to more number of vehicles. A preliminary study was conducted to investigate the impact of heavy traffic movement and pollution thereof on physiological functioning of Lagerstroemia speciosa trees planted on roadside in terms of carbon absorption, mitigation potential and adaptive behavior. Trees on roadside exhibited reduced carbon assimilation (36...
May 2017: 3 Biotech
https://www.readbyqxmd.com/read/28444457/social-cognition-and-idiopathic-isolated-cervical-dystonia
#16
Kristína Czekóová, Petra Zemánková, Daniel J Shaw, Martin Bareš
For a long time, cervical dystonia (CD) has been characterised only by disturbances in motor functioning. Despite accumulating evidence for symptomatology in various non-motor domains, to date no study has investigated social cognition in CD. The aim of this study was to compare performance of CD patients and healthy controls in neurocognitive and socio-cognitive domain. Twenty-five non-depressed patients with CD and 26 healthy controls underwent neuropsychological testing. This involved assessment of cognitive status (general intellect, verbal memory, and executive function), and socio-cognitive functions using a Theory of mind task and self-report on empathy and emotion regulation...
April 25, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28444356/long-term-effects-of-drought-on-tree-ring-growth-and-carbon-isotope-variability-in-scots-pine-in-a-dry-environment
#17
Galina Timofeeva, Kerstin Treydte, Harald Bugmann, Andreas Rigling, Marcus Schaub, Rolf Siegwolf, Matthias Saurer
Drought frequency is increasing in many parts of the world and may enhance tree decline and mortality. The underlying physiological mechanisms are poorly understood, however, particularly regarding chronic effects of long-term drought and the response to increasing temperature and vapor pressure deficit (VPD). We combined analyses of radial growth and stable carbon isotope ratios (δ13C) in tree rings in a mature Scots pine (Pinus sylvestris L.) forest over the 20th century to elucidate causes of tree mortality in one of the driest parts of the European Alps (Pfynwald, Switzerland)...
April 21, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28444321/evidence-of-altered-brain-responses-to-nicotine-in-an-animal-model-of-adhd
#18
Guillaume L Poirier, Wei Huang, Kelly Tam, Joseph R DiFranza, Jean A King
Introduction: Individuals with attention deficit/hyperactivity disorder (ADHD) are susceptible to earlier and more severe nicotine addiction. To shed light on the relationship between nicotine and ADHD, we examined nicotine's effects on functional brain networks in an animal model of ADHD. Methods: Awake magnetic resonance imaging was used to compare functional connectivity in adolescent (postnatal day 44±2) males of the Spontaneously Hypertensive Rat (SHR) strain and two control strains, Wistar Kyoto and Sprague Dawley (n = 16 each)...
April 22, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28444318/psychiatric-morbidity-in-children-with-hiv-aids-at-a-tertiary-health-institution-in-north-central-nigeria
#19
Mary Oluwatosin Adefalu, Mosunmola Florence Tunde-Ayinmode, Baba Awoye Issa, Adewole Adebola Adefalu, Seleemat Ajoke Adepoju
Introduction: Children with human immunodeficiency virus (HIV) infection are living longer with the infection and are at risk of different complications. We assessed for the prevalence of and associated factors for psychiatric morbidity among HIV-infected children in a tertiary facility in Ilorin, Nigeria. Methods: A descriptive cross-sectional, two-staged study involving 196 HIV-positive children (6-17 years). A semi-structured questionnaire and psychological instruments were used for the study...
April 20, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28444235/right-hemisphere-structural-adaptation-and-changing-language-skills-years-after-left-hemisphere-stroke
#20
Thomas M H Hope, Alex P Leff, Susan Prejawa, Rachel Bruce, Zula Haigh, Louise Lim, Sue Ramsden, Marion Oberhuber, Philipp Ludersdorfer, Jenny Crinion, Mohamed L Seghier, Cathy J Price
Stroke survivors with acquired language deficits are commonly thought to reach a 'plateau' within a year of stroke onset, after which their residual language skills will remain stable. Nevertheless, there have been reports of patients who appear to recover over years. Here, we analysed longitudinal change in 28 left-hemisphere stroke patients, each more than a year post-stroke when first assessed-testing each patient's spoken object naming skills and acquiring structural brain scans twice. Some of the patients appeared to improve over time while others declined; both directions of change were associated with, and predictable given, structural adaptation in the intact right hemisphere of the brain...
April 24, 2017: Brain: a Journal of Neurology
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