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https://www.readbyqxmd.com/read/27923226/intraoperative-tumoral-bleeding-of-hypervascular-medulloblastoma-after-ventricular-drainage-a-case-report
#1
Han-Seung Ryu, Tae-Young Jung, Moon-Soo Han, Seul-Ki Kim, Kyung-Hwa Lee
We report a rare case of intraoperative tumoral bleeding of a hypervascular medulloblastoma. A 12-year-old girl presented with dizziness and nausea. Brain magnetic resonance (MR) images revealed an approximately 4.2-cm enhanced mass on the cerebellar vermis associated with mild perilesional edema and increased cerebral blood volume. Angiography showed tumoral staining and developed occipital and circular dural sinuses in the venous phase. A suboccipital craniotomy was performed. To relieve the intracranial pressure, cerebrospinal fluid (CSF) was drained via a lateral ventricular catheter in the occipital horn...
December 7, 2016: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27923225/integrin-%C3%AE-iib%C3%AE-3-dependent-erk-signaling-is-regulated-by-src-and-rho-kinases-in-both-leu33-and-pro33-polymorphic-isoforms
#2
Khon C Huynh, Thi-Hiep Nguyen, Dinh Chuong Pham, Huong T T Nguyen, Toi Van Vo, Marianna Gyenes, Volker R Stoldt
Platelet integrin αIIbβ3 possesses a Leu/Pro polymorphism at residue 33 (Leu33/HPA-1a or Pro33/HPA-1b). The Pro33 isoform has been suggested to exhibit prothrombotic features. αIIbβ3-expressing CHO (Chinese hamster ovary) cells on immobilized fibrinogen show activation of the MAP kinase family member ERK2, with an enhanced ERK2 activity in Pro33 cells compared to Leu33 cells. In our present work, we examined how the Leu/Pro polymorphism modulates the ERK2 activation stimulated by 2 differently triggered outside-in signalings...
December 7, 2016: Acta Haematologica
https://www.readbyqxmd.com/read/27923222/pediatric-primary-diffuse-leptomeningeal-primitive-neuroectodermal-tumor-a-case-report-and-literature-review
#3
Jesna Mathew Sublett, Caitlin Davenport, Howard Eisenbrock, Shamsher Dalal, Syed A Jaffar Kazmi, Amir Kershenovich
BACKGROUND: Primary diffuse leptomeningeal primitive neuroectodermal tumor (PDL PNET) is extremely rare, with only 19 cases reported in the literature to date. We present a case of a child with rapidly progressive PDL PNET and a literature review. A 10-year-old boy presented with mood lability, hallucinations, generalized pain, enuresis, and headaches. Initial investigation failed to produce a diagnosis. The symptoms progressed to seizure, back pain, and papilledema. Imaging showed acute hydrocephalus and mild diffuse leptomeningeal enhancement without an identifiable primary lesion...
December 7, 2016: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27923196/environmental-preconditioning-rejuvenates-adult-stem-cells-proliferation-and-chondrogenic-potential
#4
REVIEW
Ming Pei
Adult stem cells are a promising cell source for cartilage regeneration. Unfortunately, due to donor age and ex vivo expansion, stem cell senescence becomes a huge hurdle for these cells to be used clinically. Increasing evidence indicates that environmental preconditioning is a powerful approach in promoting stem cells' ability to resist a harsh environment post-engraftment, such as hypoxia and inflammation. However, few reports organize and evaluate the literature regarding the rejuvenation effect of environmental preconditioning on stem cell proliferation and chondrogenic differentiation capacity, which are important variables for stem cell based tissue regeneration...
November 25, 2016: Biomaterials
https://www.readbyqxmd.com/read/27923177/the-effect-of-exergaming-on-knee-proprioception-in-older-men-a-randomized-controlled-trial
#5
Hassan Sadeghi, Mohammad Nazrul Hakim, Tengku Aizan Hamid, Saidon Bin Amri, Mohsen Razeghi, Mohammadreza Farazdaghi, Elham Shakoor
BACKGROUND: Proprioception is the ability to sense the body position, muscle sense, joint stability and posture. As balance decreases during the process of aging, knee proprioception has a critical role in body balance and daily activities. Exergaming has shown to be a potentially effective and more enjoyable form of exercise delivery. OBJECTIVE: The purpose of this study was to determine the effect of an 8-week Xbox Kinect exercise program on knee proprioception in healthy older adults...
November 23, 2016: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/27923170/instant-detection-and-identification-of-concealed-explosive-related-compounds-induced-stokes-raman-versus-infrared
#6
Sherif Elbasuney, Ashraf F El-Sherif
The instant detection of explosives and explosive-related compounds has become an urgent priority in recent years for homeland security and counter-terrorism applications. Modern techniques should offer enhancement in selectivity, sensitivity, and standoff distances. Miniaturisation, portability, and field-ruggedisation are crucial requirements. This study reports on instant and standoff identification of concealed explosive-related compounds using customized Raman technique. Stokes Raman spectra of common explosive-related compounds were generated and spectrally resolved to create characteristic finger print spectra...
November 30, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27923169/primary-stability-of-unicompartmental-knee-arthroplasty-under-dynamic-flexion-movement-in-human-femora
#7
Thomas M Grupp, Melanie Holderied, Matthias F Pietschmann, Christian Schröder, Angélica P Islas Padilla, Christoph Schilling, Volkmar Jansson, Peter E Müller
BACKGROUND: The objective of our study was to evaluate the impact of a trabecular stem fixation versus a cortical teeth fixation technique on the primary stability of cemented unicompartmental femoral components under dynamic flexion movement loading conditions in human femora. METHODS: Ten fresh-frozen human knees of a mean donor age of 73.9years were used to perform medial unicompartmental knee arthroplasty under a less invasive parapatellar surgical approach...
November 26, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27923162/comparison-of-different-osmotic-therapies-in-a-mouse-model-of-traumatic-brain-injury
#8
Vinoth K M Khandelwal, Prabhakar Singh, Tatiana Ravingerova, Marslin Gregory, Hardik Gandhi, Manu Chaudhary
BACKGROUND: Inflammation in the affected region, increased intracranial pressure, consequent oedema and congestion contribute to the negative outcome of traumatic brain injury. Osmotic therapies are recommended for improvement in cognitive and motor functions. Aim of the present study was to evaluate the effect of osmotic therapies in a mice model of traumatic brain injury. METHODS: Experimental closed head injury was performed in adult Swiss albino mice by the weight-drop method...
October 11, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27923153/bilingual-toddlers-have-advanced-abilities-to-repair-communication-failure
#9
Stephanie Wermelinger, Anja Gampe, Moritz M Daum
Recent research has demonstrated enhanced communicative abilities in bilingual children compared with monolingual children throughout childhood and in a variety of domains. The processes underlying these advantages are, however, not well understood. It has been suggested that one aspect that particularly stimulates bilinguals' communication skills is their daily experience with challenging communication. In the current study, we investigated whether children's assumed experience with communication failures would increase their skills when it came to repairing communication failure...
December 3, 2016: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/27923150/an-analysis-of-alumni-performance-a-study-of-the-quality-of-nursing-education
#10
Serap Altuntaş, Ülkü Baykal
BACKGROUND: The professional performance level of their alumni is one of the quality indicators of educational institutions. Nursing education institutions can use their alumni's performance analysis results to enhance their curricula, eliminate deficiencies, improve the quality of education and graduate more highly qualified nurses. OBJECTIVE AND DESIGN: This is a descriptive, cross-sectional and comparative study, which aimed to determine the professional performances of nurses who graduated from the same nursing faculty...
November 29, 2016: Nurse Education Today
https://www.readbyqxmd.com/read/27923144/folic-acid-grafted-bovine-serum-albumin-decorated-graphene-oxide-an-efficient-drug-carrier-for-targeted-cancer-therapy
#11
Naxin Ma, Jing Liu, Wenxiu He, Zhonghao Li, Yuxia Luan, Yunmei Song, Sanjay Garg
Targeting drug carrier systems based on graphene oxide (GO) are of great interest, since it can selectively deliver anticancer drugs to tumor cells, and enhance therapeutic activities with minimized side effects. However, direct grafting target molecules on GO usually results in aggregation of physiological fluid, limiting its biomedical applications. Here, we propose a new strategy to construct targeting GO drug carrier using folic acid grafted bovine serum albumin (FA-BSA) as both the stabilizer and targeting agent...
November 29, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27923142/cobalt-nanoparticles-nitrogen-doped-graphene-with-high-nitrogen-doping-efficiency-as-noble-metal-free-electrocatalysts-for-oxygen-reduction-reaction
#12
Jingwen Liang, Mehboob Hassan, Dongsheng Zhu, Liping Guo, Xiangjie Bo
Nitrogen-doped graphene (N/GR) has been considered as active metal-free electrocatalysts for oxygen reduction reaction (ORR). However, the nitrogen (N) doping efficiency is very low and only few N atoms are doped into the framework of GR. To boost the N doping efficiency, in this work, a confined pyrolysis method with high N doping efficiency is used for the preparation of cobalt nanoparticles/nitrogen-doped GR (Co/N/GR). Under the protection of SiO2, the inorganic ligand NH3 in cobalt amine complex ([Co(NH3)6](3+)) is trapped in the confined space and then can be effectively doped into the framework of GR without the introduction of any carbon residues...
November 30, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27923134/evolution-enhanced-footing-for-snake-limb-development
#13
Maria M Kaltcheva, Mark Lewandoski
Two groups have studied the loss of limbs in snake evolution by focusing on a long-distance cis-acting enhancer of Sonic Hedgehog. They find a progressive degeneration of binding sites for key transcription factors, mirroring the progressive limblessness occurring in these reptiles.
December 5, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27923117/examining-topological-domain-influence-on-enhancer-function
#14
Robert A Beagrie, Ana Pombo
Enhancers regulate the expression of target genes across large genomic distances, but it is unclear how recently discovered topological domains affect this regulation. Reporting in this issue of Developmental Cell, Symmons et al. (2016) show that the endogenous Shh topological domain promotes functional interactions between Shh and its remote enhancer.
December 5, 2016: Developmental Cell
https://www.readbyqxmd.com/read/27923065/mutations-in-the-heme-exporter-flvcr1-cause-sensory-neurodegeneration-with-loss-of-pain-perception
#15
Deborah Chiabrando, Marco Castori, Maja di Rocco, Martin Ungelenk, Sebastian Gießelmann, Matteo Di Capua, Annalisa Madeo, Paola Grammatico, Sophie Bartsch, Christian A Hübner, Fiorella Altruda, Lorenzo Silengo, Emanuela Tolosano, Ingo Kurth
Pain is necessary to alert us to actual or potential tissue damage. Specialized nerve cells in the body periphery, so called nociceptors, are fundamental to mediate pain perception and humans without pain perception are at permanent risk for injuries, burns and mutilations. Pain insensitivity can be caused by sensory neurodegeneration which is a hallmark of hereditary sensory and autonomic neuropathies (HSANs). Although mutations in several genes were previously associated with sensory neurodegeneration, the etiology of many cases remains unknown...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27923061/comparative-transcriptomic-and-epigenomic-analyses-reveal-new-regulators-of-murine-brown-adipogenesis
#16
Reinhard Brunmeir, Jingyi Wu, Xu Peng, Sun-Yee Kim, Sofi G Julien, Qiongyi Zhang, Wei Xie, Feng Xu
Increasing energy expenditure through brown adipocyte recruitment is a promising approach to combat obesity. We report here the comprehensive profiling of the epigenome and transcriptome throughout the lineage commitment and differentiation of C3H10T1/2 mesenchymal stem cell line into brown adipocytes. Through direct comparison to datasets from differentiating white adipocytes, we systematically identify stage- and lineage-specific coding genes, lncRNAs and microRNAs. Utilizing chromatin state maps, we also define stage- and lineage-specific enhancers, including super-enhancers, and their associated transcription factor binding motifs and genes...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27923053/different-evolutionary-paths-to-complexity-for-small-and-large-populations-of-digital-organisms
#17
Thomas LaBar, Christoph Adami
A major aim of evolutionary biology is to explain the respective roles of adaptive versus non-adaptive changes in the evolution of complexity. While selection is certainly responsible for the spread and maintenance of complex phenotypes, this does not automatically imply that strong selection enhances the chance for the emergence of novel traits, that is, the origination of complexity. Population size is one parameter that alters the relative importance of adaptive and non-adaptive processes: as population size decreases, selection weakens and genetic drift grows in importance...
December 2016: PLoS Computational Biology
https://www.readbyqxmd.com/read/27923014/potential-impact-of-integrated-stigma-mitigation-interventions-in-improving-hiv-aids-service-delivery-and-uptake-for-key-populations-in-senegal
#18
Carrie E Lyons, Sosthenes Ketende, Daouda Diouf, Fatou M Drame, Benjamin Liestman, Karleen Coly, Cheikh Ndour, Gnilane Turpin, Souleymane Mboup, Karim Diop, Coumba Toure-Kane, Delivette Castor, Nafissatou Leye-Diouf, Stefan Baral
BACKGROUND: Men who have sex with men (MSM) and female sex workers (FSW) are consistently shown to have a higher burden of HIV compared with other adults in Senegal. This study, HIV Prevention 2.0, evaluates the impact of the 3-tiered integrated stigma mitigation interventions (ISMIs) approach to optimizing HIV service delivery for key populations in Senegal. METHODS: Baseline assessment includes a questionnaire and biological testing for HIV. A proportion of participants enrolled into a 24-month longitudinal cohort with questionnaires and biological testing every 3 months...
January 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27923012/using-mhealth-for-hiv-tb-treatment-support-in-lesotho-enhancing-patient-provider-communication-in-the-start-study
#19
Yael Hirsch-Moverman, Amrita Daftary, Katharine A Yuengling, Suzue Saito, Moeketsi Ntoane, Koen Frederix, Llang B Maama, Andrea A Howard
BACKGROUND: mHealth is a promising means of supporting adherence to treatment. The Start TB patients on ART and Retain on Treatment (START) study included real-time adherence support using short-text messaging service (SMS) text messaging and trained village health workers (VHWs). We describe the use and acceptability of mHealth by patients with HIV/tuberculosis and health care providers. METHODS: Patients and treatment supporters received automated, coded medication and appointment reminders at their preferred time and frequency, using their own phones, and $3...
January 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/27922985/video-analysis-of-anterior-cruciate-ligament-acl-injuries-a-systematic-review
#20
Victor R Carlson, Frances T Sheehan, Barry P Boden
BACKGROUND: As the most viable method for investigating in vivo anterior cruciate ligament (ACL) rupture, video analysis is critical for understanding ACL injury mechanisms and advancing preventative training programs. Despite the limited number of published studies involving video analysis, much has been gained through evaluating actual injury scenarios. METHODS: Studies meeting criteria for this systematic review were collected by performing a broad search of the ACL literature with use of variations and combinations of video recordings and ACL injuries...
November 29, 2016: JBJS Reviews
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