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https://www.readbyqxmd.com/read/29333621/characterization-of-mouse-neuro-urological-dynamics-in-a-novel-decerebrate-arterially-perfused-mouse-dapm-preparation
#1
Hiroki Ito, Marcus J Drake, Christopher H Fry, Anthony J Kanai, Anthony E Pickering
AIM: To develop the decerebrate arterially perfused mouse (DAPM) preparation, a novel voiding model of the lower urinary tract (LUT) that enables in vitro-like access with in vivo-like neural connectivity. METHODS: Adult male mice were decerebrated and arterially perfused with a carbogenated, Ringer's solution to establish the DAPM. To allow distinction between central and peripheral actions of interventions, experiments were conducted in both the DAPM and in a "pithed" DAPM which has no brainstem or spinal cord control...
January 15, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29329453/response-to-harreld-re-response-assessment-in-medulloblastoma-and-leptomeningeal-seeding-tumors-recommendations-from-the-response-assessment-in-pediatric-neuro-oncology-committee
#2
Katherine E Warren, Gilbert Vezina, Tina Y Poussaint, Monika Warmuth-Metz, Roger J Packer, Mark W Kieran
No abstract text is available yet for this article.
January 10, 2018: Neuro-oncology
https://www.readbyqxmd.com/read/29323764/integrative-neuro-humoral-regulation-of-oxytocin-neuron-activity-in-pregnancy-and-lactation
#3
REVIEW
Rachael A Augustine, Alexander J Seymour, Rebecca E Campbell, David R Grattan, Colin H Brown
Oxytocin is required for normal birth and lactation. Oxytocin is synthesised by hypothalamic supraoptic and paraventricular nuclei neurons and is released into the circulation from the posterior pituitary gland. Under basal conditions, circulating oxytocin levels are relatively constant but during birth and lactation, pulsatile oxytocin release triggers rhythmic contraction of the uterus during birth and milk ejection during suckling. Oxytocin levels are principally determined by the pattern of action potential firing that is, in turn, determined by the interplay between the intrinsic properties of the oxytocin neurons, regulation of their excitability by surrounding glia as well as by synaptic drive from their afferent inputs...
January 11, 2018: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/29321311/herpes-simplex-virus-1-mutant-with-point-mutations-in-ul39-is-impaired-for-acute-viral-replication-in-mice-establishment-of-latency-and-explant-induced-reactivation
#4
Heba H Mostafa, Thornton W Thompson, Adam J Konen, Steve D Haenchen, Joshua G Hilliard, Stuart J Macdonald, Lynda A Morrison, David J Davido
In the process of generating HSV-1 mutants in the viral regulatory gene encoding infected cell protein 0 (ICP0), we isolated a viral mutant, termed KOS-NA, that was severely impaired for acute replication in the eyes and trigeminal ganglia (TG) of mice, defective in establishing a latent infection, and reactivated poorly from explanted TG. To identify the secondary mutation(s) responsible for the impaired phenotypes of this mutant, we sequenced the KOS-NA genome and noted that it contained two nonsynonymous mutations in UL39, which encodes the large subunit of ribonucleotide reductase, ICP6...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29311338/faulty-neuronal-determination-and-cell-polarization-are-reverted-by-modulating-hd-early-phenotypes
#5
P Conforti, D Besusso, V D Bocchi, A Faedo, E Cesana, G Rossetti, V Ranzani, C N Svendsen, L M Thompson, M Toselli, G Biella, M Pagani, E Cattaneo
Increasing evidence suggests that early neurodevelopmental defects in Huntington's disease (HD) patients could contribute to the later adult neurodegenerative phenotype. Here, by using HD-derived induced pluripotent stem cell lines, we report that early telencephalic induction and late neural identity are affected in cortical and striatal populations. We show that a large CAG expansion causes complete failure of the neuro-ectodermal acquisition, while cells carrying shorter CAGs repeats show gross abnormalities in neural rosette formation as well as disrupted cytoarchitecture in cortical organoids...
January 8, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29304919/cranial-tumor-surgical-outcomes-at-a-high-volume-academic-referral-center
#6
Desmond A Brown, Benjamin T Himes, Brittny T Major, Benjamin F Mundell, Ravi Kumar, Bruce Kall, Fredric B Meyer, Michael J Link, Bruce E Pollock, John D Atkinson, Jamie J Van Gompel, W Richard Marsh, Giuseppe Lanzino, Mohamad Bydon, Ian F Parney
OBJECTIVE: To determine adverse event rates for adult cranial neuro-oncologic surgeries performed at a high-volume quaternary academic center and assess the impact of resident participation on perioperative complication rates. PATIENTS AND METHODS: All adult patients undergoing neurosurgical intervention for an intracranial neoplastic lesion between January 1, 2009, and December 31, 2013, were included. Cases were categorized as biopsy, extra-axial/skull base, intra-axial, or transsphenoidal...
January 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29304360/clinical-trial-design-for-local-therapies-for-brain-metastases-a-guideline-by-the-response-assessment-in-neuro-oncology-brain-metastases-working-group
#7
REVIEW
Brian M Alexander, Paul D Brown, Manmeet S Ahluwalia, Hidefumi Aoyama, Brigitta G Baumert, Susan M Chang, Laurie E Gaspar, Steven N Kalkanis, David R Macdonald, Minesh P Mehta, Riccardo Soffietti, John H Suh, Martin J van den Bent, Michael A Vogelbaum, Jeffrey S Wefel, Eudocia Q Lee, Patrick Y Wen
The goals of therapeutic and biomarker development form the foundation of clinical trial design, and change considerably from early-phase to late-phase trials. From these goals, decisions on specific clinical trial design elements, such as endpoint selection and statistical approaches, are formed. Whereas early-phase trials might focus on finding a therapeutic signal to make decisions on further development, late-phase trials focus on the confirmation of therapeutic impact by considering clinically meaningful endpoints...
January 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29304358/clinical-trial-design-for-systemic-agents-in-patients-with-brain-metastases-from-solid-tumours-a-guideline-by-the-response-assessment-in-neuro-oncology-brain-metastases-working-group
#8
REVIEW
D Ross Camidge, Eudocia Q Lee, Nancy U Lin, Kim Margolin, Manmeet S Ahluwalia, Martin Bendszus, Susan M Chang, Janet Dancey, Elisabeth G E de Vries, Gordon J Harris, F Stephen Hodi, Andrew B Lassman, David R Macdonald, David M Peereboom, David Schiff, Ricardo Soffietti, Martin J van den Bent, Jeffrey S Wefel, Patrick Y Wen
Patients with active CNS disease are often excluded from clinical trials, and data regarding the CNS efficacy of systemic agents are usually obtained late in the drug development process or not at all. In this guideline from the Response Assessment in Neuro-Oncology Brain Metastases (RANO-BM) working group, we provide detailed recommendations on when patients with brain metastases from solid tumours should be included or excluded in clinical trials of systemic agents. We also discuss the limitations of retrospective studies in determining the CNS efficacy of systemic drugs...
January 2018: Lancet Oncology
https://www.readbyqxmd.com/read/29304139/early-neonatal-mortality-and-neurological-outcomes-of-neonatal-resuscitation-in-a-resource-limited-setting-on-the-thailand-myanmar-border-a-descriptive-study
#9
Sophie Janet, Verena I Carrara, Julie A Simpson, Nant War War Thin, Wah Wah Say, Naw Ta Mlar Paw, Kesinee Chotivanich, Claudia Turner, Jane Crawley, Rose McGready
BACKGROUND: Of the 4 million neonatal deaths worldwide yearly, 98% occur in low and middle-income countries. Effective resuscitation reduces mortality and morbidity but long-term outcomes in resource-limited settings are poorly described. This study reports on newborn neurological outcomes following resuscitation at birth in a resource-limited setting where intensive newborn care including intubation is unavailable. METHODS: Retrospective analysis of births records from 2008 to 2015 at Shoklo Malaria Research Unit (SMRU) on the Thailand-Myanmar border...
2018: PloS One
https://www.readbyqxmd.com/read/29300354/modulation-of-inducible-nitric-oxide-synthase-expression-in-lps-stimulated-bv-2-microglia-by-prenylated-chalcones-from-cullen-corylifolium-l-medik-through-inhibition-of-i-%C3%AE%C2%BAb%C3%AE-degradation
#10
Do Hee Kim, Hua Li, Yeong Eun Han, Ji Hye Jeong, Hwa Jin Lee, Jae-Ha Ryu
The overproduction of nitric oxide (NO) and prostaglandin E₂ (PGE₂) by microglia may cause neurodegenerative diseases, such as Alzheimer's disease and Parkinson's disease. From the activity-guided purification of Cullen corylifolium (L.) Medik. (syn. Psoralea corylifolia L.), three prenylated chalcones were identified: isobavachalcone (1), bavachromene (2), and kanzonol B (3). These prenylated chalcones showed concentration-dependent inhibitory effects on NO and PGE₂ production in lipopolysaccharide (LPS)-activated microglia...
January 4, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29288684/the-octapetide-nap-alleviates-intestinal-and-extra-intestinal-anti-inflammatory-sequelae-of-acute-experimental-colitis
#11
Markus M Heimesaat, Eliezer Giladi, Anja A Kühl, Stefan Bereswill, Illana Gozes
The octapeptide NAP has been shown to exert neuroprotective properties and reduce neuro-inflammatory responses. The aim of the present study was to investigate if NAP provides anti-inflammatory effects in acute murine colitis. To address this, C57BL/6 j mice were challenged with 3.5% dextran sulfate sodium from day 0 until day 6 to induce colitis, either treated intraperitoneally with NAP or placebo (NaCl 0.9%) from day 1 until day 6 post-induction (p.i.) and subjected to in depth macroscopic, microscopic and immunological evaluations...
December 27, 2017: Peptides
https://www.readbyqxmd.com/read/29286511/cerebral-impact-of-prenatal-irradiation-by-131i-an-experimental-model-of-clinical-neuroradioembryological-effects
#12
V V Talko, K M Loganovsky, I P Drozd, Ye V Tukalenko, T K Loganovska, S Yu Nechayev, S V Masiuk, Ye M Prokhorova
Human brain in prenatal period is a most vulnerable to ionizing radiation body structure. Unlike atomic bombings or radiological interventions in healthcare leading at most to external irradiation the intensive internal exposure may occur upon nuclear reactor accidents followed by substantial release and fallout of radioactive 131I. The latter can lead to specific neuroradioembryological effects. OBJECTIVE: To create an experimental model of prenatal cerebral radiation effects of 131I in human and to determine the experimental and clinical neuroradioembryological effects...
December 2017: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
https://www.readbyqxmd.com/read/29280256/heart-and-brain-interaction-in-patients-with-heart-failure-overview-and-proposal-for-a-taxonomy-a-position-paper-from-the-study-group-on-heart-and-brain-interaction-of-the-heart-failure-association
#13
REVIEW
Wolfram Doehner, Dilek Ural, Karl Georg Haeusler, Jelena Čelutkienė, Reinaldo Bestetti, Yuksel Cavusoglu, Marco A Peña-Duque, Duska Glavas, Massimo Iacoviello, Ulrich Laufs, Ricardo Marmol Alvear, Amam Mbakwem, Massimo F Piepoli, Stuart D Rosen, Georgios Tsivgoulis, Cristiana Vitale, M Birhan Yilmaz, Stefan D Anker, Gerasimos Filippatos, Petar Seferovic, Andrew J S Coats, Frank Ruschitzka
Heart failure (HF) is a complex clinical syndrome with multiple interactions between the failing myocardium and cerebral (dys-)functions. Bi-directional feedback interactions between the heart and the brain are inherent in the pathophysiology of HF: (i) the impaired cardiac function affects cerebral structure and functional capacity, and (ii) neuronal signals impact on the cardiovascular continuum. These interactions contribute to the symptomatic presentation of HF patients and affect many co-morbidities of HF...
December 27, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29278020/diagnosis-and-management-of-lyme-neuroborreliosis
#14
John J Halperin
The nervous system is involved in 10-15% of patients infected with B. burgdorferi, B. afzelii and B. garinii. This review will address widespread misconceptions about the clinical phenomenology, diagnostic approach and response to treatment of neuroborreliosis. Areas covered: Improvements in diagnostic testing have allowed better definition of the clinical spectrum of neuroborreliosis, with lymphocytic meningitis and uni- or multifocal inflammation of peripheral/cranial nerves predominating. Despite widespread concern that post-treatment cognitive/behavioral symptoms might be attributable to persisting infection or aberrant inflammation within the central nervous system a large body of evidence indicates this is extremely improbable...
January 2018: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29258553/prenatal-alcohol-exposure-is-a-risk-factor-for-adult-neuropathic-pain-via-aberrant-neuroimmune-function
#15
Joshua J Sanchez, Shahani Noor, Suzy Davies, Daniel Savage, Erin D Milligan
BACKGROUND: Clinical studies show that prenatal alcohol exposure (PAE) results in effects that persist into adulthood. Experimental animal models of moderate PAE demonstrate that young adults with PAE display potentiated sensitivity to light touch, clinically termed allodynia, following sciatic nerve chronic constriction injury (CCI) that coincides with heightened spinal glial, spinal macrophage, and peripheral immune responses. However, basal touch sensitivity and corresponding glial and leukocyte activation are unaltered...
December 19, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29248498/towards-a-neuro-computational-account-of-prism-adaptation
#16
Pierre Petitet, Jill X O'Reilly, Jacinta O'Shea
Prism adaptation has a long history as an experimental paradigm used to investigate the functional and neural processes that underlie sensorimotor control. In the neuropsychology literature, prism adaptation behaviour is typically explained by reference to a traditional cognitive psychology framework that distinguishes putative functions, such as 'strategic control' versus 'spatial realignment'. This theoretical framework lacks conceptual clarity, quantitative precision and explanatory power. Here, we advocate for an alternative computational framework that offers several advantages: 1) an algorithmic explanatory account of the computations and operations that drive behaviour; 2) expressed in quantitative mathematical terms; 3) embedded within a principled theoretical framework (Bayesian decision theory, state-space modelling); 4) that offers a means to generate and test quantitative behavioural predictions...
December 14, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29244485/critical-role-of-trp-588-of-presynaptic-munc13-1-for-ligand-binding-and-membrane-translocation
#17
Joydip Das, Noemi Kedei, Jessica S Kelsey, Youngki You, Satyabrata Pany, Gary A Mitchell, Nancy E Lewin, Peter M Blumberg
Munc13-1 is a presynaptic active-zone protein essential for neurotransmitter release and presynaptic plasticity in the brain. This multi-domain scaffold protein contains a C1 domain that binds to the activator diacylglycerol/phorbol ester. Although the C1 domain bears close structural homology with the C1 domains of protein kinase C (PKC), the tryptophan residue at position 22 (588 in the full-length Munc13-1) occludes the activator binding pocket, which is not the case for PKC. To elucidate the role of this tryptophan, we generated W22A, W22K, W22D, W22Y and W22F substitutions in the full-length Munc13-1, expressed the GFP- tagged constructs in Neuro-2a cells, and measured their membrane translocation in response to phorbol ester treatment by imaging of the live cells using confocal microscopy...
December 15, 2017: Biochemistry
https://www.readbyqxmd.com/read/29244089/the-historical-progression-from-adl-scrutiny-to-iadl-to-advanced-adl-assessing-functional-status-in-the-earliest-stages-of-dementia
#18
Robert Fieo, Laura Zahodne, Ming X Tang, Jennifer J Manly, Ron Cohen, Yaakov Stern
Background: Decrements in instrumental activities (IADL) have been observed in the prodromal phase of dementia. Given the long pre-dementia stage in neuro-degenerative diseases, it has been proposed that subtle functional changes may precede clinical IADL impairment. Incorporating more challenging advanced ADLs (e.g., volunteer work) into the assessment process may increase the sensitivity of functional measures, thus expanding the window for monitoring or interventions. Methods: Longitudinal cohort study (follow-ups, 18-24 month), subjects aged >60 (n=3635)...
December 13, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29235051/development-of-the-cns-tap-tool-for-the-selection-of-precision-medicine-therapies-in-neuro-oncology
#19
Joseph R Linzey, Bernard L Marini, Amy Pasternak, Cory Smith, Zac Miklja, Lili Zhao, Chandan Kumar-Sinha, Alyssa Paul, Nicholas Harris, Patricia L Robertson, Lindsey M Hoffman, Arul Chinnaiyan, Rajen Mody, Carl Koschmann
The number of targeted therapies utilized in precision medicine are rapidly increasing. Neuro-oncology offers a unique challenge due to the varying blood brain barrier (BBB) penetration of each agent. Neuro-oncologists face a difficult task weighing the growing number of potential targeted therapies and their likelihood of BBB penetration. We developed the CNS TAP Working Group and performed an extensive literature review for the evidence-based creation of the CNS TAP tool, which was retrospectively validated by analyzing brain tumor patients who underwent therapy targeted based on genomic results from an academic sequencing study (MiOncoseq, n = 17) or private molecular profiling (Foundation One, n = 7)...
December 12, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29225094/the-sweet-effect-comparative-assessments-of-dietary-sugars-on-cognitive-performance
#20
Rachel Ginieis, Elizabeth A Franz, Indrawati Oey, Mei Peng
In recent years there has been increasing interest in studying cognitive effects associated with sugar consumption. Neuro-cognitive research has confirmed that glucose, as a main energy substrate for the brain, can momentarily benefit cognitive performances, particularly for memory functioning. However, there is still limited understanding of relative effects of other common sugars (e.g., fructose and sucrose) on cognitive performance. The present study tested in 49 people the effects of three common dietary sugars against a placebo sweetener (i...
December 7, 2017: Physiology & Behavior
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