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Elizabeth R Gerstner, Kristian W Pajtler
Ependymoma can arise throughout the whole neuraxis. In children, tumors predominantly occur intracranially, whereas the spine is the most prevalent location in adults. Significant variance in the grade II versus grade III distinction of ependymomas has led to the acknowledgment that the clinical utility of histopathological classification is limited. Epigenomic profiling efforts have identified molecularly distinct groups of ependymomas that adequately reflect the biological, clinical, and histopathological heterogeneities across anatomical compartments, age groups, and grades...
February 2018: Seminars in Neurology
Kristen Healy
The goal of this study was to evaluate the use of stable isotope labeled compounds to better understand factors influencing energy turnover in larval Culex quinquefasciatus (Say; Diptera: Culicidae). Three isotope labeled compounds were evaluated in this study, including 15N-labeled potassium nitrate, 13C-labeled glucose, and 13C-labeled leucine. Conditions were first optimized in the laboratory to determine the most appropriate concentration of isotope, as well as the half-life of enrichment. Once optimum conditions were established we used standard equations to predict and determine temperature and density-dependent energy turnover rates...
March 14, 2018: Journal of Medical Entomology
Christopher D Witiw, Fabrice Smieliauskas, John E O'Toole, Michael G Fehlings, Richard G Fessler
BACKGROUND: Surgery for cervical radiculopathy is often approached by either anterior cervical discectomy and fusion (ACDF) or posterior cervical foraminotomy (PCF). ACDF is more common; however, recent single center studies suggest comparable efficacy and significant cost savings with PCF in appropriately selected patients. OBJECTIVE: To compare utilization, adverse events, and costs for each approach from a national perspective. METHODS: Adults undergoing single level ACDF or PCF for cervical radiculopathy were included from a US commercial health insurance claims database spanning 2003 to 2014...
March 14, 2018: Neurosurgery
Anna M Hammersmith
Purpose: Parents' and children's lives are interwoven over the life course. Parents' positivity and negativity toward children relate to children's and parents' transitions, although the nature of this relationship is unclear. This study investigated the extent to which transitions-like those tied to residence, unions, employment, parenthood, and health-related to parents' positivity and negativity. Method: This study used the Health and Retirement Study's Psychosocial Survey from 2006 and 2010 to examine how parents' and children's transitions related to parents' positivity and negativity toward children...
March 14, 2018: Gerontologist
Arjun Sethi, Valerie Voon, Hugo D Critchley, Mara Cercignani, Neil A Harrison
Computational models of reinforcement learning have helped dissect discrete components of reward-related function and characterize neurocognitive deficits in psychiatric illnesses. Stimulus novelty biases decision-making, even when unrelated to choice outcome, acting as if possessing intrinsic reward value to guide decisions toward uncertain options. Heightened novelty seeking is characteristic of attention deficit hyperactivity disorder, yet how this influences reward-related decision-making is computationally encoded, or is altered by stimulant medication, is currently uncertain...
March 13, 2018: Brain: a Journal of Neurology
Bertine de Vries, Jooske T van Busschbach, Elisabeth C D van der Stouwe, André Aleman, Jan J M van Dijk, Paul H Lysaker, Johan Arends, Saskia A Nijman, Gerdina H M Pijnenborg
Psychotic disorders often have been linked with violence. However, studies have shown that people with a psychotic disorder are more often victim than perpetrator of violence. The objective of this meta-analysis was to review prevalence rates for different types of victimization and to identify risk factors associated with victimization. Based on a search in MEDLINE, PsycINFO, and Web of Science, 27 studies were found with samples consisting of adults with a psychotic disorder and possible victimization occurring during adulthood and data on "violent victimization," "sexual victimization," "non-violent victimization," and/or "victimization not otherwise specified...
March 14, 2018: Schizophrenia Bulletin
Min Young Kim, Ji Sook Kim, Seung Han Son, Chang Su Lim, Hea Young Eum, Dae Hyun Ha, Mi Ae Park, Eun Jung Baek, Buom-Yong Ryu, Ho Chul Kang, Vladimir N Uversky, Chul Geun Kim
During hematopoiesis, red blood cells originate from the hematopoietic stem cell reservoir. Although the regulation of erythropoiesis and globin expression has been intensively investigated, the underlining mechanisms are not fully understood, including the interplay between transcription factors and epigenetic factors. Here, we uncover that the Mbd2-free NuRD chromatin remodeling complex potentiates erythroid differentiation of proerythroblasts via managing functions of the CP2c complexes. We found that both Mbd2 and Mbd3 expression is downregulated during differentiation of MEL cells in vitro and in normal erythropoiesis in mouse bone marrow, and Mbd2 downregulation is crucial for erythropoiesis...
March 14, 2018: Nucleic Acids Research
Christian B Theodotou, George M Ghobrial, Andrew L Middleton, Michael Y Wang, Allan D Levi
BACKGROUND: Cervical facet dislocations are among the most common traumatic spinal injuries. Posterior, anterior, and combined surgical approaches have been described and are widely debated. OBJECTIVE: To demonstrate efficacy in anterior-only surgical management for subaxial cervical facet dislocations. METHODS: A consistent surgical algorithm for cervical facet dislocation was applied over a 19-yr period and analyzed retrospectively in adults with acute unilateral or bilateral facet dislocation of the subaxial cervical spine...
March 14, 2018: Neurosurgery
Michael Z L Zhu, Andrew Martin, Andrew D Cochrane, Julian A Smith, Amanda G Thrift, Gerard K Harrop, Jennifer P Ngo, Roger G Evans
Background: Acute kidney injury (AKI) is common after cardiac surgery and profoundly affects postoperative mortality and morbidity. There are no validated methods to assess risk of AKI intraoperatively. Methods: We determined the association between postoperative AKI and intraoperative urinary oxygen tension (PO2), measured via a fiber optic probe in the tip of the urinary catheter, in 65 patients undergoing high-risk cardiac surgery requiring cardiopulmonary bypass (CPB)...
March 14, 2018: Nephrology, Dialysis, Transplantation
Jeffry A Simpson, W Steven Rholes
In this article, we discuss theory and research on how people who have different adult romantic attachment orientations fare across one of life's often happiest, but also most chronically stressful, events-the transition to parenthood. We first discuss central principles of attachment theory and then review empirical research revealing how two types of attachment insecurity-anxiety and avoidance-tend to prospectively predict unique patterns of relational and personal outcomes across this often challenging life event...
March 6, 2018: Current Opinion in Psychology
Erika Obikane, Tomohiro Shinozaki, Daisuke Takagi, Norito Kawakami
BACKGROUND: Childhood abuse is associated with adult suicidal behaviors, partially mediated by mental disorders. However, the direct effect of childhood abuse not mediated by mental disorders is uncertain because the same risk factors serve as mediators and confounders of mental disorders and suicidal behaviors. The aim of the study was to estimate the direct effect of childhood abuse not mediated by mental disorders on suicidal behaviors using marginal structural models. METHODS: We used cross-sectional data of Japanese adults in Tokyo and neighboring prefectures (The Japanese Study on Stratification, Health, Income, and Neighborhood)...
February 22, 2018: Journal of Affective Disorders
Corina Nüesch, Jan-Arie Overberg, Hermann Schwameder, Geert Pagenstert, Annegret Mündermann
BACKGROUND: Instrumented treadmills with integrated pressure mats measure spatiotemporal, pressure and force parameters and are often used to investigate changes in gait patterns due to injury or rehabilitation. RESEARCH QUESTION: What is the within- and between-day repeatability of such an instrumented treadmill for spatiotemporal parameters, peak pressures and forces during walking and running? METHODS: Treadmill gait and running analysis were performed at 5...
March 7, 2018: Gait & Posture
Yi Yan, Vitor Sencadas, Tiantian Jin, Xufeng Huang, Wilford Lie, Dongbin Wei, Zhengyi Jiang
Processing conditions deeply affect the mechanical, chemical and biological properties of elastomeric based nanocomposites. In this work, multi-walled carbon nanotubes (MWCNTs) were dispersed in poly(glycerol sebacate) (PGS) prepolymer, followed by curing under vacuum at 120 °C. It was observed an increase of the water contact angle with the amount of MWCNTs added, as well as the tensile strength and Young modulus, without compromising the elastomeric behaviour of the pristine PGS matrix. The cross-linking degree was determined by the Flory-Rehner swelling method and through the mechanical rubber elasticity model, and an increase of more than six-fold was observed, which demonstrates the chemical conjugation between the MWCNTs and the PGS polymer chains, resulting in stiff and elastomeric nanocomposites...
March 7, 2018: Journal of Colloid and Interface Science
Nagendra Madan Singh, T N Sathyaprabha, Kashyap Malthish, Jagadisha Thirthalli, Chittaranjan Andrade
BACKGROUND: Studies have examined the effects of electroconvulsive therapy (ECT) on human cardiac electrophysiology. However, no study has so far examined whether these effects vary with the magnitude of the electrical dose used to elicit the seizure. Because the benefits and adverse effects of the ECT seizure are dose-dependent, we examined the effects of different electrical doses of electroconvulsive shocks (ECS) on cardiac electrophysiology in an animal model with a view to determine whether cardiac electrophysiology could be a useful proxy to evaluate the quality of the ECT seizure...
March 2, 2018: Asian Journal of Psychiatry
Yun Bai, Chuan Liu, Lei Fu, Xiaoshan Gong, Ce Dou, Zhen Cao, Hongyu Quan, Jianmei Li, Fei Kang, Jingjin Dai, Chunrong Zhao, Shiwu Dong
Endochondral ossification is crucial for bone formation in both adult bone repair process and embryo long-bone development. In endochondral ossification, bone marrow-derived mesenchymal stem cells (BMSCs) first differentiate to chondrocyte, BMSC-derived chondrocyte then endure a hypertrophic process to generate new bone. Endochondral ossification-based bone repair is a promising strategy to cure massive bone defect, which is a major clinical issue in orthopedics. However, challenges still remain for this novel strategy...
March 16, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Ricardo Cartes-Velásquez, Luis Luengo-Machucaa
OBJECTIVE: To adapt and validate the Rapid Estimate of Adult Literacy in Dentistry (REALD-30) for the Chilean population. METHODS: REALD-30 was translated to Spanish, piloted, and revised by experts. Demographics, oral health status, oral health-related quality of life, and health literacy were analyzed. Summary measures, internal consistency, reliability, and convergent and predictive validity were calculated. RESULTS: Cronbach's alpha was 0...
March 2018: Puerto Rico Health Sciences Journal
Velda J Gonzalez, Susan McMillan, Elsa Pedro, Maribel Tirado-Gomez, Leorey N Saligan
OBJECTIVE: To examine the health related quality of life (HRQOL) experienced by 79 Puerto Rican adults during cancer treatments. METHODS: This study used a descriptive, cross-sectional design. Participants completed a demographics form and the Functional Assessment of Cancer Therapy-General QOL questionnaire (FACT-G). Descriptive statistics were generated. RESULTS: Participants were ages 28-78; most of the participants had breast (38.0%), prostate (14...
2018: Puerto Rico Health Sciences Journal
Seo Ah Hong, Karl Peltzer, Kyi Tun Lwin, La Seng Aung
BACKGROUND: The aim of the study was to estimate the prevalence of underweight and overweight or obesity and their socio-demographic and lifestyle factors in a female adult population in Myanmar. MATERIAL AND METHODS: In a national cross-sectional population-based survey in the 2015-16 Myanmar Demographic and Health Survey, 12,160 women aged 18-49 years and not currently pregnant completed questionnaires and anthropometric measurements. Nutritional status was determined using Asian body mass index cut-offs: underweight (BMI<18...
2018: PloS One
James R Smith, Jaboury Ghazoul, David F R P Burslem, Akira Itoh, Eyen Khoo, Soon Leong Lee, Colin R Maycock, Satoshi Nanami, Kevin Kit Siong Ng, Chris J Kettle
Documenting the scale and intensity of fine-scale spatial genetic structure (FSGS), and the processes that shape it, is relevant to the sustainable management of genetic resources in timber tree species, particularly where logging or fragmentation might disrupt gene flow. In this study we assessed patterns of FSGS in three species of Dipterocarpaceae (Parashorea tomentella, Shorea leprosula and Shorea parvifolia) across four different tropical rain forests in Malaysia using nuclear microsatellite markers. Topographic heterogeneity varied across the sites...
2018: PloS One
Ravi Prakash Saini, Venkat Raman, Gurusamy Dhandapani, Era Vaidya Malhotra, Rohini Sreevathsa, Polumetla Ananda Kumar, Tilak R Sharma, Debasis Pattanayak
The polyphagous insect-pest, Helicoverpa armigera, is a serious threat to a number of economically important crops. Chemical application and/or cultivation of Bt transgenic crops are the two strategies available now for insect-pest management. However, environmental pollution and long-term sustainability are major concerns against these two options. RNAi is now considered as a promising technology to complement Bt to tackle insect-pests menace. In this study, we report host-delivered silencing of HaAce1 gene, encoding the predominant isoform of H...
2018: PloS One
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