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https://www.readbyqxmd.com/read/28538516/left-lateralization-of-resting-state-functional-connectivity-between-the-presupplementary-motor-area-and-primary-language-areas
#1
William Lou, Kyung K Peck, Nicole Brennan, Arka Mallela, Andrei Holodny
An abundance of evidence points to the role of a presupplementary motor area (pre-SMA) in human language. This study explores the pre-SMA resting state connectivity network and the nature of its connections to known language areas. We tested the hypothesis that by seeding the pre-SMA, one would be able to establish language laterality to known cortical and subcortical language areas. We analyzed data from 30 right-handed healthy controls and performed the resting state functional MRI. A seed-based analysis using a manually drawn pre-SMA region of interest template was applied...
May 19, 2017: Neuroreport
https://www.readbyqxmd.com/read/28538193/ethyl-pyruvate-protects-pc12-cells-from-oxygen-glucose-deprivation-a-potential-role-in-ischemic-cerebrovascular-disease
#2
Wenbo Li, Jiyu Lou, Liping Wei, Hongying Bai, Yaohui Zhang, Yuqing He
The protective potential of ethyl pyruvate (EP) on neuron has been investigated previously. This study was intended to investigate the effects of EP on the severity of oxygen-glucose deprivation (OGD)-induced injury in neural-like PC12 cells. PC12 cells were exposed to OGD condition with or without EP treatment. Then, cell viability, apoptosis, and the expressions of neurotrophic factors were detected. Further, Sprague-Dawley rats were intravenously administered with 5mg/kg EP for 14 days post-middle cerebral artery occlusion (MCAO)...
May 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28535548/is-traumatic-and-non-traumatic-neck-pain-associated-with-brain-alterations-a-systematic-review
#3
Robby DePauw, Iris Coppieters, Mira Meeus, Karen Caeyenberghs, Lieven Danneels, Barbara Cagnie
BACKGROUND: Chronic neck pain affects 50% - 85% of people who have experienced an acute episode. This transition and the persistence of chronic complaints are believed to be mediated by brain alterations among different central mechanisms. OBJECTIVES: This study aimed to systematically review and critically appraise the current existing evidence regarding structural and functional brain alterations in patients with whiplash associated disorders (WAD) and idiopathic neck pain (INP)...
May 2017: Pain Physician
https://www.readbyqxmd.com/read/28535372/a-brain-region-specific-neural-pathway-regulating-germinal-matrix-angiogenesis
#4
Shang Ma, Devi Santhosh, Peeyush Kumar T, Zhen Huang
Intimate communication between neural and vascular cells is critical for normal brain development and function. Germinal matrix (GM), a key primordium for the brain reward circuitry, is unique among brain regions for its distinct pace of angiogenesis and selective vulnerability to hemorrhage during development. A major neonatal condition, GM hemorrhage can lead to cerebral palsy, hydrocephalus, and mental retardation. Here we identify a brain-region-specific neural progenitor-based signaling pathway dedicated to regulating GM vessel development...
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28534935/effect-of-fasudil-on-cognitive-function-following-status-convulsion-in-rats
#5
Rong He, Wei Han, Xiaojie Song, Xiaoju Tang, Li Cheng, Li Jiang
Fasudil has been demonstrated to possess a protective effect in neural injury; however, its protective effect on convulsive brain injury remains to be assessed. The aim of the present study was to investigate the latent mechanism and effect of fasudil on cognitive function following status convulsion (SC) in rats. Initially, to determine the effects of SC, the expression levels of Ras homolog gene family, member A (RhoA)/Rho‑associated protein kinase (ROCK) signaling pathway‑associated proteins were measured by western blot analysis in 16 rats...
May 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28534824/isorhynchophylline-a-potent-plant-alkaloid-induces-apoptotic-and-anti-metastatic-effects-in-human-hepatocellular-carcinoma-cells-through-the-modulation-of-diverse-cell-signaling-cascades
#6
Hanwool Lee, Seung Ho Baek, Jong Hyun Lee, Chulwon Kim, Jeong-Hyeon Ko, Seok-Geun Lee, Arunachalam Chinnathambi, Sulaiman Ali Alharbi, Woong Mo Yang, Jae-Young Um, Gautam Sethi, Kwang Seok Ahn
Isorhynchophylline (Rhy) is an active pharmacological component of Uncaria rhynchophylla that has been reported previously to exert significant antihypertensive and neuroprotective effects. However, very little is known about its potential anti-cancer activities. This study was carried out to evaluate the anticancer effects of Rhy against various human carcinoma cell lines. We found that Rhy exhibited substantial cytotoxic effect against human hepatocellular carcinoma HepG2 cells when compared with other human carcinoma cell lines including those of lung, pancreas, prostate, head and neck, breast, multiple myeloma, brain and renal cell carcinoma...
May 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28534785/efficient-hardware-implementation-of-real-time-low-power-movement-intention-detector-system-using-fft-and-adaptive-wavelet-transform
#7
Alireza Chamanzar, Mahdi Shabany, Alireza Malekmohammadi, Sara Mohammadinejad
The brain-computer interfacing (BCI), a platform to extract features and classify different motor movement tasks from noisy and highly correlated electroencephalogram signals, is limited mostly by the complex and power-hungry algorithms. Among different techniques recently devised to tackle this issue, real-time onset detection, due to its negligible delay and minimal power overhead, is the most efficient one. Here, we propose a novel algorithm that outperforms the state-of-the-art design by sixfold in terms of speed, without sacrificing the accuracy for a real-time, hand movement intention detection based on the adaptive wavelet transform with only 1 s detection delay and maximum sensitivity of 88% and selectivity of 78% (only 7% loss of sensitivity)...
May 17, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28534509/a-novel-interaction-of-pak4-with-ppar%C3%AE-to-regulate-nox1-and-radiation-induced-epithelial-to-mesenchymal-transition-in-glioma
#8
D Kesanakurti, D Maddirela, Y K Banasavadi-Siddegowda, T-H Lai, Z Qamri, N K Jacob, D Sampath, S Mohanam, B Kaur, V K Puduvalli
Tumor recurrence in glioblastoma (GBM) is, in part, attributed to increased epithelial-to-mesenchymal transition (EMT) and enhanced tumor cell dissemination in adjacent brain parenchyma after ionizing radiation (IR). EMT is associated with aggressive behavior, increased stem-like characteristics and treatment resistance in malignancies; however, the underlying signaling mechanisms that regulate EMT are poorly understood. We identified grade-dependent p21-activated kinases 4 (PAK4) upregulation in gliomas and further determined its role in mesenchymal transition and radioresistance...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534507/cecr1-mediated-cross-talk-between-macrophages-and-vascular-mural-cells-promotes-neovascularization-in-malignant-glioma
#9
C Zhu, I Chrifi, D Mustafa, M van der Weiden, P J M Leenen, D J Duncker, J M Kros, C Cheng
Glioblastomas (glioblastoma multiforme, GBM) are most malignant brain tumors characterized by profound vascularization. The activation of macrophages strongly contributes to tumor angiogenesis during GBM development. Previously, we showed that extracellular adenosine deaminase protein Cat Eye Syndrome Critical Region Protein 1 (CECR1) is highly expressed by M2-like macrophages in GBM where it defines macrophage M2 polarization and contributes to tumor expansion. In this study, the effect of CECR1 in macrophages on tumor angiogenesis was investigated...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534495/exercise-induces-cerebral-vegf-and-angiogenesis-via-the-lactate-receptor-hcar1
#10
Cecilie Morland, Krister A Andersson, Øyvind P Haugen, Alena Hadzic, Liv Kleppa, Andreas Gille, Johanne E Rinholm, Vuk Palibrk, Elisabeth H Diget, Lauritz H Kennedy, Tomas Stølen, Eivind Hennestad, Olve Moldestad, Yiqing Cai, Maja Puchades, Stefan Offermanns, Koen Vervaeke, Magnar Bjørås, Ulrik Wisløff, Jon Storm-Mathisen, Linda H Bergersen
Physical exercise can improve brain function and delay neurodegeneration; however, the initial signal from muscle to brain is unknown. Here we show that the lactate receptor (HCAR1) is highly enriched in pial fibroblast-like cells that line the vessels supplying blood to the brain, and in pericyte-like cells along intracerebral microvessels. Activation of HCAR1 enhances cerebral vascular endothelial growth factor A (VEGFA) and cerebral angiogenesis. High-intensity interval exercise (5 days weekly for 7 weeks), as well as L-lactate subcutaneous injection that leads to an increase in blood lactate levels similar to exercise, increases brain VEGFA protein and capillary density in wild-type mice, but not in knockout mice lacking HCAR1...
May 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28534459/differences-in-neural-response-to-extinction-recall-in-young-adults-with-or-without-history-of-behavioral-inhibition
#11
Tomer Shechner, Nathan A Fox, Jamie A Mash, Johanna M Jarcho, Gang Chen, Ellen Leibenluft, Daniel S Pine, Jennifer C Britton
Behavioral inhibition (BI) is a temperament identified in early childhood that is associated with risk for anxiety disorders, yet only about half of behaviorally inhibited children manifest anxiety later in life. We compared brain function and behavior during extinction recall in a sample of nonanxious young adults characterized in childhood with BI (n = 22) or with no BI (n = 28). Three weeks after undergoing fear conditioning and extinction, participants completed a functional magnetic resonance imaging extinction recall task assessing memory and threat differentiation for conditioned stimuli...
May 23, 2017: Development and Psychopathology
https://www.readbyqxmd.com/read/28534174/the-il-1%C3%AE-phenomena-in-neuroinflammatory-diseases
#12
REVIEW
Andrew S Mendiola, Astrid E Cardona
It is becoming increasingly clear that neuroinflammation has a causal role in the pathogenesis of central nervous system (CNS)-related diseases, and therefore therapeutic strategies targeting the regulation or availability of inflammatory mediators can be used to prevent or mitigate pathology. Interestingly, the proinflammatory cytokine, interleukin-1 beta (IL-1β), has been implicated in perpetuating immune responses and contributing to disease severity in a variety of CNS diseases ranging from multiple sclerosis, neurodegenerative diseases, traumatic brain injury, and diabetic retinopathy...
May 22, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28534077/white-matter-injury-in-the-preterm-infant-pathology-and-mechanisms
#13
REVIEW
Stephen A Back
The human preterm brain is particularly susceptible to cerebral white matter injury (WMI) that disrupts the normal progression of developmental myelination. Advances in the care of preterm infants have resulted in a sustained reduction in the severity of WMI that has shifted from more severe focal necrotic lesions to milder diffuse WMI. Nevertheless, WMI remains a global health problem and the most common cause of chronic neurological morbidity from cerebral palsy and diverse neurobehavioral disabilities. Diffuse WMI involves maturation-dependent vulnerability of the oligodendrocyte (OL) lineage with selective degeneration of late oligodendrocyte progenitors (preOLs) triggered by oxidative stress and other insults...
May 22, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28533765/leptin-induces-mitosis-and-activates-the-canonical-wnt-%C3%AE-catenin-signaling-pathway-in-neurogenic-regions-of-xenopus-tadpole-brain
#14
Melissa Cui Bender, Christopher J Sifuentes, Robert J Denver
In addition to its well-known role as an adipostat in adult mammals, leptin has diverse physiological and developmental actions in vertebrates. Leptin has been shown to promote development of hypothalamic circuits and to induce mitosis in different brain areas of mammals. We investigated the ontogeny of leptin mRNA, leptin actions on cell proliferation in the brain, and gene expression in the preoptic area/hypothalamus of tadpoles of Xenopus laevis. The level of leptin mRNA was low in premetamorphic tadpoles, but increased strongly at the beginning of metamorphosis and peaked at metamorphic climax...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28533741/adulthood-exposure-to-lipopolysaccharide-exacerbates-the-neurotoxic-and-inflammatory-effects-of-rotenone-in-the-substantia-nigra
#15
Chun Huang, Li Zhu, Huan Li, Fu-Guo Shi, Guo-Qing Wang, Yi-Zheng Wei, Jie Liu, Feng Zhang
Parkinson's disease (PD) is the second most neurodegenerative disorder with a regional decrease of dopamine (DA) neurons in the substantia nigra (SN). Despite intense exploration, the etiology of PD progressive process remains unclear. This study was to investigate the synergistic effects of systemic inflammation of lipopolysaccharide (LPS) and neurotoxicity of rotenone (ROT) on exacerbating DA neuron lesion. Male SD adulthood rats received a single intraperitoneal injection of LPS. Seven months later, rats were subcutaneously given ROT five times a week for consecutive 4 weeks...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28533631/an-angstrom-sensitive-differential-mems-capacitor-for-monitoring-the-milliliter-dynamics-of-fluids
#16
David J Apigo, Philip L Bartholomew, Thomas Russell, Alokik Kanwal, Reginald C Farrow, Gordon A Thomas
A device, with MEMS sensors at its core, has been fabricated and tested for measuring low fluid pressure and slow flow rates. The motivation was to measure clinically relevant ranges of slow-moving fluids in living systems, such as the cerebrospinal fluid in the brain. For potential clinical utility, the device can be read transcutaneously by inductive coupling to MEMS capacitive sensors in circuits with resonance frequencies in the MHz range. Signal shifts for flow rates in the range of 0-42 mL/h and differential pressure levels between 0...
November 1, 2016: Sensors and Actuators. A, Physical
https://www.readbyqxmd.com/read/28533515/perivascular-aqp4-dysregulation-in-the-hippocampal-ca1-area-after-traumatic-brain-injury-is-alleviated-by-adenosine-a2a-receptor-inactivation
#17
Zi-Ai Zhao, Ping Li, Shi-Yang Ye, Ya-Lei Ning, Hao Wang, Yan Peng, Nan Yang, Yan Zhao, Zhuo-Hang Zhang, Jiang-Fan Chen, Yuan-Guo Zhou
Traumatic brain injury (TBI) can induce cognitive dysfunction due to the regional accumulation of hyperphosphorylated tau protein (p-tau). However, the factors that cause p-tau to concentrate in specific brain regions remain unclear. Here, we show that AQP4 polarization in the perivascular astrocytic end feet was impaired after TBI, which was most prominent in the ipsilateral brain tissue surrounding the directly impacted region and the contralateral hippocampal CA1 area and was accompanied by increased local p-tau, changes in dendritic spine density and morphology, and upregulation of the adenosine A2A receptor (A2AR)...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28533392/syringe-injectable-mesh-electronics-integrate-seamlessly-with-minimal-chronic-immune-response-in-the-brain
#18
Tao Zhou, Guosong Hong, Tian-Ming Fu, Xiao Yang, Thomas G Schuhmann, Robert D Viveros, Charles M Lieber
Implantation of electrical probes into the brain has been central to both neuroscience research and biomedical applications, although conventional probes induce gliosis in surrounding tissue. We recently reported ultraflexible open mesh electronics implanted into rodent brains by syringe injection that exhibit promising chronic tissue response and recording stability. Here we report time-dependent histology studies of the mesh electronics/brain-tissue interface obtained from sections perpendicular and parallel to probe long axis, as well as studies of conventional flexible thin-film probes...
May 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28533384/changes-in-perceptual-sensitivity-related-to-spatial-cues-depends-on-subcortical-activity
#19
Lee P Lovejoy, Richard J Krauzlis
Spatial cues allow animals to selectively attend to relevant visual stimuli while ignoring distracters. This process depends on a distributed neuronal network, and an important current challenge is to understand the functional contributions made by individual brain regions within this network and how these contributions interact. Recent findings point to a possible anatomical segregation, with cortical and subcortical brain regions contributing to different functional components of selective attention. Cortical areas, especially visual cortex, may be responsible for implementing changes in perceptual sensitivity by changing the signal-to-noise ratio, whereas other regions, such as the superior colliculus, may be involved in processes that influence selection between competing stimuli without regulating perceptual sensitivity...
May 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28533327/serum-amyloid-a-an-ozone-induced-circulating-factor-with-potentially-important-functions-in-the-lung-brain-axis
#20
Michelle A Erickson, Joseph Jude, Hengjiang Zhao, Elizabeth M Rhea, Therese S Salameh, William Jester, Shelley Pu, Jenna Harrowitz, Ngan Nguyen, William A Banks, Reynold A Panettieri, Kelly L Jordan-Sciutto
Accumulating evidence suggests that O3 exposure may contribute to CNS dysfunction. Here, we posit that inflammatory and acute-phase proteins in the circulation increase after O3 exposure and systemically convey signals of O3 exposure to the CNS. To model acute O3 exposure, female Balb/c mice were exposed to 3 ppm O3 or forced air for 2 h and were studied after 6 or 24 h. Of 23 cytokines and chemokines, only KC/CXCL1 was increased in blood 6 h after O3 exposure. The acute-phase protein serum amyloid A (A-SAA) was significantly increased by 24 h, whereas C-reactive protein was unchanged...
May 22, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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