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https://www.readbyqxmd.com/read/28531983/development-of-haptic-based-piezoresistive-artificial-fingertip-toward-efficient-tactile-sensing-systems-for-humanoids
#1
Amin TermehYousefi, Saman Azhari, Amin Khajeh, Mohd Nizar Hamidon, Hirofumi Tanaka
Haptic sensors are essential devices that facilitate human-like sensing systems such as implantable medical devices and humanoid robots. The availability of conducting thin films with haptic properties could lead to the development of tactile sensing systems that stretch reversibly, sense pressure (not just touch), and integrate with collapsible. In this study, a nanocomposite based hemispherical artificial fingertip fabricated to enhance the tactile sensing systems of humanoid robots. To validate the hypothesis, proposed method was used in the robot-like finger system to classify the ripe and unripe tomato by recording the metabolic growth of the tomato as a function of resistivity change during a controlled indention force...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531943/recent-trends-in-zikv-research-a-step-away-from-cure
#2
REVIEW
Aftab Alam, Nikhat Imam, Anam Farooqui, Shahnawaz Ali, Md Zubbair Malik, Romana Ishrat
Zika virus (ZikV) is a member of the Flaviviridae virus family, genus Flavivirus has emerged as a potential threat to human health worldwide. Consequences of vertical infections includes microcephaly with brain and eye anomalies, and adult infections includes Guillain-Barrésyndrome (GBS), brain ischemia, myelitis and meningoencephalitis. To develop a better treatment, many efforts are being made, like drug-repurposing concept for FDA-approved drugs for antiviral activity are screened against ZikV infection and emerging as a promising alternative to expedite drug development and various vaccines like DNA, ZPIV, LAIV, mRNA and AGS-v vaccines have been designed and in under clinical trial phases...
May 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531845/artesunate-and-erythropoietin-synergistically-improve-the-outcome-of-experimental-cerebral-malaria
#3
Yunting Du, Guang Chen, Xuexing Zhang, Chunyun Yu, Yaming Cao, Liwang Cui
Cerebral malaria (CM) is a severe neurological syndrome in humans and the main fatal cause of malaria. In malaria epidemic regions, despite appropriate anti-malarial treatment, 10-20% of deaths still occur during the acute phase. This is largely attributable to poor treatment access, therapeutic complexity and drug resistance; thus, developing additional clinical adjunctive therapies is an urgent necessity. In this study, we investigated the effect of artesunate (AST) and recombinant human erythropoietin (rhEPO) using an experimental cerebral malaria (ECM) model-C57BL/6 mice infected with Plasmodium berghei ANKA (PbA)...
May 19, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28531844/development-of-an-uplc-ms-ms-method-for-simultaneous-quantitation-of-11-d-amino-acids-in-different-regions-of-rat-brain-application-to-a-study-on-the-associations-of-d-amino-acid-concentration-changes-and-alzheimer-s-disease
#4
Zhe Li, Yuping Xing, Xingjie Guo, Yan Cui
There are significant differences in d-amino acid concentrations between healthy people and Alzheimer's disease patients. In order to investigate the potential correlation between d-amino acids and Alzheimer's disease, a simple and sensitive ultra high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method has been developed. The method was applied to simultaneous determination of 11 d-amino acids in different regions of rat brain. Rat brain homogenates were firstly pretreated with protein precipitation procedure and then derivatized with (S)-N-(4-nitrophenoxycarbonyl) phenylalanine methoxyethyl ester [(S)-NIFE]...
May 11, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28531831/workflow-methodology-for-rat-brain-metabolome-exploration-using-nmr-lc-ms-and-gc-ms-analytical-platforms
#5
Binta Diémé, Antoine Lefèvre, Lydie Nadal-Desbarats, Laurent Galineau, Blandine Madji Hounoum, Frédéric Montigny, Hélène Blasco, Christian R Andres, Patrick Emond, Sylvie Mavel
We developed a multi-platform approach for the metabolome exploration of rat brain tissue, using liquid chromatography coupled with mass spectrometry (LC-MS), nuclear magnetic resonance spectroscopy (NMR) and gas-chromatography coupled with mass spectrometry (GC-MS). The critical steps for metabolite exploration of cerebral tissues are tissue lysis and metabolites extraction. We first evaluated the impact of freeze-drying compared to wet tissue metabolites extraction using NMR and LC-MS with a reversed phase liquid chromatography...
May 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28531325/up-regulated-microrna-299-corrected-with-poor-prognosis-of-glioblastoma-multiforme-patients-by-targeting-ell2
#6
Qian Huang, Xin-Wen Zhang, Yu-Shui Ma, Gai-Xia Lu, Ru-Ting Xie, Hui-Qiong Yang, Zhong-Wei Lv, Xiao-Ming Zhong, Tao Liu, Shi-Xiong Huang, Da Fu, Chun Xie
Background: An increasing understanding of the genes and molecular pathways of glioblastoma multiforme (GBM) can provide us a useful insight for the development of more effective targeted therapeutic. Methods: To investigate the expression and clinical significance of miR-299 and its target genes in GBM, the expression levels of miR-299 and its target gene in human normal brain tissues and GBM were analyzed in silico using genes microarray and hierarchical clustering analysis followed by validation with quantitative RT-PCR...
May 20, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28531270/utilization-of-quantitative-susceptibility-mapping-for-direct-targeting-of-the-subthalamic-nucleus-during-deep-brain-stimulation-surgery
#7
Jonathan Rasouli, Ritesh Ramdhani, Fedor E Panov, Alexey Dimov, Yan Zhang, Catherine Cho, Yi Wang, Brian Harris Kopell
BACKGROUND: Deep brain stimulation of the subthalamic nucleus (STN) has demonstrated efficacy in improving motor disability in Parkinson's disease. The recently developed quantitative susceptibility mapping (QSM) technique, which can accurately map iron deposits in deep brain nuclei, promises precise targeting of the STN. OBJECTIVE: To demonstrate the use of QSM to target STN effectively by correlating with classical physiological-based targeting measures in a prospective study...
May 21, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28531178/zebrafish-exposure-to-environmentally-relevant-concentration-of-depleted-uranium-impairs-progeny-development-at-the-molecular-and-histological-levels
#8
Olivier Armant, Kewin Gombeau, Sophia Murat El Houdigui, Magali Floriani, Virginie Camilleri, Isabelle Cavalie, Christelle Adam-Guillermin
Uranium is an actinide naturally found in the environment. Anthropogenic activities lead to the release of increasing amounts of uranium and depleted uranium (DU) in the environment, posing potential risks to aquatic organisms due to radiological and chemical toxicity of this radionucleide. Although environmental contaminations with high levels of uranium have already been observed, chronic exposures of non-human species to levels close to the environmental quality standards remain scarcely characterized. The present study focused on the identification of the molecular pathways impacted by a chronic exposure of zebrafish to 20 μg/L of DU during 10 days...
2017: PloS One
https://www.readbyqxmd.com/read/28530831/blue-shifted-green-fluorescent-protein-homologs-are-brighter-than-enhanced-green-fluorescent-protein-under-two-photon-excitation
#9
Rosana S Molina, Tam M Tran, Robert E Campbell, Gerard Glenn Lambert, Anya Salih, Nathan C Shaner, Thomas E Hughes, Mikhail Drobizhev
Fluorescent proteins (FPs) are indispensable markers for two-photon imaging of live tissue, especially in the brains of small model organisms. The quantity of physiologically relevant data collected, however, is limited by heat-induced damage of the tissue due to the high intensities of the excitation laser. We seek to minimize this damage by developing FPs with improved brightness. Among FPs with the same chromophore structure, the spectral properties can vary widely due to differences in the local protein environment...
May 22, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28530811/multi-targeted-imidazoles-potential-therapeutic-leads-for-alzheimer-s-and-other-neurodegenerative-diseases
#10
Anne-Sophie Cornec, Ludovica Monti, Jane Kovalevich, Vishruti Makani, Michael J James, Krishna G Vijayendran, Killian Oukoloff, Yuemang Yao, Virginia M-Y Lee, John Q Trojanowski, Amos B Smith Iii, Kurt R Brunden, Carlo Ballatore
Alzheimer's disease (AD) is a complex, multifactorial disease in which different neuropathological mechanisms are likely involved, including those associated with pathological tau and Aβ species, as well as neuroinflammation. In this context, the development of single multi-targeted therapeutics directed against two or more disease mechanisms could be advantageous. Starting from a series of 1,5-diarylimidazoles with microtubule (MT)-stabilizing activity and structural similarities with known NSAIDs, we conducted structure-activity relationship studies that led to the identification of multi-targeted prototypes with activities as MT-stabilizing agents and/or inhibitors of the cyclooxygenase (COX) and 5-lipoxygenase (5-LOX) pathways...
May 22, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28530704/upregulation-of-cyp17a1-by-sp1-mediated-dna-demethylation-confers-temozolomide-resistance-through-dhea-mediated-protection-in-glioma
#11
J-Y Chuang, W-L Lo, C-Y Ko, S-Y Chou, R-M Chen, K-Y Chang, J-J Hung, W-C Su, W-C Chang, T-I Hsu
Steroidogenesis-mediated production of neurosteroids is important for brain homeostasis. Cytochrome P450 17A1 (CYP17A1), which converts pregnenolone to dehydroepiandrosterone (DHEA) in endocrine organs and the brain, is required for prostate cancer progression and acquired chemotherapeutic resistance. However, whether CYP17A1-mediated DHEA synthesis is involved in brain tumor malignancy, especially in glioma, the most prevalent brain tumor, is unknown. To investigate the role of CYP17A1 in glioma, we determined that CYP17A1 expression is significantly increased in gliomas, which secrete more DHEA than normal astrocytes...
May 22, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28530673/genome-wide-association-meta-analysis-of-78-308-individuals-identifies-new-loci-and-genes-influencing-human-intelligence
#12
Suzanne Sniekers, Sven Stringer, Kyoko Watanabe, Philip R Jansen, Jonathan R I Coleman, Eva Krapohl, Erdogan Taskesen, Anke R Hammerschlag, Aysu Okbay, Delilah Zabaneh, Najaf Amin, Gerome Breen, David Cesarini, Christopher F Chabris, William G Iacono, M Arfan Ikram, Magnus Johannesson, Philipp Koellinger, James J Lee, Patrik K E Magnusson, Matt McGue, Mike B Miller, William E R Ollier, Antony Payton, Neil Pendleton, Robert Plomin, Cornelius A Rietveld, Henning Tiemeier, Cornelia M van Duijn, Danielle Posthuma
Intelligence is associated with important economic and health-related life outcomes. Despite intelligence having substantial heritability (0.54) and a confirmed polygenic nature, initial genetic studies were mostly underpowered. Here we report a meta-analysis for intelligence of 78,308 individuals. We identify 336 associated SNPs (METAL P < 5 × 10(-8)) in 18 genomic loci, of which 15 are new. Around half of the SNPs are located inside a gene, implicating 22 genes, of which 11 are new findings. Gene-based analyses identified an additional 30 genes (MAGMA P < 2...
May 22, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28530445/gamma-knife-treatment-of-recurrent-cns-metastases-of-pancreatic-origin-a-case-report-and-review-of-the-literature
#13
Subha Perni, Tony J Wang, Jerry Lesser, Christopher Mandigo, Steven R Isaacson, David P Horowitz
Brain metastases (BM) of pancreatic origin are extremely rare. We review the literature around BM of pancreatic origin and describe a 38-year-old woman who developed BM 10 months after pancreaticoduodenectomy for treatment of pancreatic adenocarcinoma. She underwent resection and fractionated stereotactic radiotherapy followed by re-resection and Gamma Knife radiosurgery (GKRS) when the lesion recurred. She then developed two new BM, and was treated with GKRS. The patient is alive without progression 38 months after her most recent GKRS...
April 2017: CNS Oncology
https://www.readbyqxmd.com/read/28530340/-can-post-traumatic-stress-disorder-be-prevented-with-glucocorticoids
#14
REVIEW
Hagit Cohen, Zeev Kaplan, Joseph Zohar
Glucocorticoids (GCs) play a major role in orchestrating the complex physiological and behavioral reactions essential for the maintenance of homeostasis. These compounds enable the organism to prepare for, respond to and cope with the acute demands of physical and emotional stressors. The appropriate GC release, commensurate with stressor severity, enables the body to properly contain stress responses so as to promote recovery by rapidly restoring homeostasis. Indeed, inadequate GC release following stress not only delays recovery by disrupting biological homeostasis in the short run but can also interfere with the processing or interpretation of stressful information that results in long-term disruptions in memory integration...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28530336/-noninvasive-brain-stimulation-in-neuropsychiatric-disorders
#15
REVIEW
Doron Todder, Nimrod Grisaru, Zeev Kaplan
Noninvasive brain stimulation is a growing field of treatment for many neuropsychiatric problems. In this review, several of the more common brain stimulation devices are presented. Specifically, we will review Transcranial Magnetic Stimulation (TMS), Transcranial Direct Current Stimulation (tDCS), Alternating Current Stimulation (ACS), Infrared Stimulation, Electroencephalography Neurofeedback (EEG-NF) and functional Magnetic Resonance Imagining Neurofeedback (fMRI-NF). We will outline some of the properties of these devices including the mechanism, side effect profile, using sham for research and major future developments...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28530209/reproducible-3d-printed-head-tanks-for-electrical-impedance-tomography-with-realistic-shape-and-conductivity-distribution
#16
James Avery, Kirill Aristovich, Barney Low, David Holder
OBJECTIVE: Electrical impedance tomography (EIT) has many promising applications in brain injury monitoring. To evaluate both instrumentation and reconstruction algorithms, experiments are first performed in head tanks. Existing methods, whilst accurate, produce a discontinuous conductivity, and are often made by hand, making it hard for other researchers to replicate. APPROACH: We have developed a method for constructing head tanks directly in a 3D printer. Conductivity was controlled through perforations in the skull surface, which allow for saline to pass through...
May 22, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28530158/analyzing-circle-of-willis-blood-flow-in-ischemic-stroke-patients-through-3d-stroke-arterial-flow-estimation
#17
Aichi Chien, Fernando Viñuela
Background The objective of ischemic stroke (IS) treatment is to achieve revascularization in cerebral arteries to restore blood flow. However, there is no available method to extract arterial flow data from clinical CTA images. We developed 3D Stroke Arterial Flow Estimation (SAFE), which provides blood flow data throughout the Circle of Willis based on 3D CTA and allows comparison of arterial flow distribution in the brain. Methods We implemented a newly developed 3D vascular reconstruction algorithm for clinical stroke CTA images...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28530154/determining-electrode-placement-for-transcranial-direct-current-stimulation-a-comparison-of-eeg-versus-tms-guided-methods
#18
Tonya L Rich, Jeremiah S Menk, Kyle D Rudser, Mo Chen, Gregg D Meekins, Edgar Peña, Timothy Feyma, Kay Bawroski, Christina Bush, Bernadette T Gillick
Transcranial direct current stimulation (tDCS) is increasingly researched as an adjuvant to motor rehabilitation for children with hemiparesis. The optimal method for the primary motor cortex (M1) somatotopic localization for tDCS electrode placement has not been established. The objective, therefore, was to determine the location of the M1 derived using the 10/20 electroencephalography (EEG) system and transcranial magnetic stimulation (TMS) in children with hemiparesis (CWH) and a comparison group of typically developing children (TDC)...
May 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/28530073/-red-herring-complaints-in-an-eighteen-years-old-female-with-a-hydatid-cyst-of-the-lung
#19
Nasser Nadim
Brain and eye hydatid cysts are early symptomatic, as opposed to those developing in other organs, including lungs, where they remain asymptomatic through adolescence, even to adulthood, due to their slow growth. Hence, discovering that patients have lung hydatid cyst occurs, frequently, during random chest imaging. Up to thirty percent of pulmonary echinococcal cysts may rupture spontaneously, after chest or abdominal trauma. The main lung hydatidosis complaints, such as dyspnea and chest pain, are caused by the reduction of the functional area of the lung, expectoration of the tapeworm cystoides into the bronchial tree, or by compression of surrounding structures...
November 2016: Harefuah
https://www.readbyqxmd.com/read/28529878/neuroimaging-in-pre-motor-parkinson-s-disease
#20
REVIEW
Thomas R Barber, Johannes C Klein, Clare E Mackay, Michele T M Hu
The process of neurodegeneration in Parkinson's disease begins long before the onset of clinical motor symptoms, resulting in substantial cell loss by the time a diagnosis can be made. The period between the onset of neurodegeneration and the development of motoric disease would be the ideal time to intervene with disease modifying therapies. This pre-motor phase can last many years, but the lack of a specific clinical phenotype means that objective biomarkers are needed to reliably detect prodromal disease...
2017: NeuroImage: Clinical
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