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https://www.readbyqxmd.com/read/28109199/functional-magnetic-resonance-imaging-in-dermatology-the-skin-the-brain-and-the-invisible
#1
REVIEW
Simon M Mueller, Samuel Hogg, Jannis Mueller, Shane McKie, Peter Itin, Julia Reinhardt, Christopher E M Griffiths, C Elise Kleyn
The skin and brain have a close bi-directional anatomical and functional connection. Historically, the skin-brain axis and the brain-skin axis have been well described. However, brain function in this context has only recently been demystified with the introduction of functional neuroimaging in dermatology. Functional neuroimaging, especially functional magnetic resonance imaging (fMRI), allows indirect visualisation of brain function. This review looks back to the beginnings of functional neuroimaging in dermatology, summarises the currently available dermatology-related fMRI-studies and discusses the potential future role of fMRI as a stratifying tool in clinical dermatology and in the development of novel therapies...
January 21, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28109186/interleukin-1-as-a-mediator-of-fatigue-in-disease-a-narrative-review
#2
REVIEW
Megan E Roerink, Marieke E van der Schaaf, Charles A Dinarello, Hans Knoop, Jos W M van der Meer
Fatigue is commonly reported in a variety of illnesses, and it has major impact on quality of life. Previously, it was thought that fatigue originates in the skeletal muscles, leading to cessation of activity. However, more recently, it has become clear that the brain is the central regulator of fatigue perception. It has been suggested that pro-inflammatory cytokines, especially interleukin-1 alpha (IL-1α) and interleukin-1 beta (IL-1β), play a prominent role in the development of central fatigue, and several studies have been performed to elucidate the connection between inflammation and these central processes...
January 21, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28108871/quantitative-spm-analysis-involving-an-adaptive-template-may-be-easily-applied-to-18-f-fdg-pet-images-of-the-rat-brain
#3
Sylvain Poussier, Fatiha Maskali, Gaelle Vexiau, Antoine Verger, Henri Boutley, Gilles Karcher, Emmanuel Raffo, Pierre-Yves Marie
PURPOSE: The Statistical Parametric Mapping (SPM) software is frequently used for the quantitative analysis of patients' brain images obtained from 2-deoxy-2-[(18)F]fluoro-D-glucose positron emission tomography ([(18)F]FDG PET). However, its adaptation to small animals is difficult, particularly for the initial step of spatial normalization which requires a specific brain anatomical template. This study was aimed at determining whether SPM analysis can be applied to rat, and more specifically to the lithium-pilocarpine model of epilepsy, by using an adaptive template...
January 20, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28108861/in-vivo-magnetic-resonance-imaging-investigating-the-development-of-experimental-brain-metastases-due-to-triple-negative-breast-cancer
#4
Amanda M Hamilton, Paula J Foster
Triple negative breast cancer (TNBC), when associated with poor outcome, is aggressive in nature with a high incidence of brain metastasis and the shortest median overall patient survival after brain metastasis development compared to all other breast cancer subtypes. As therapies that control primary cancer and extracranial metastatic sites improve, the incidence of brain metastases is increasing and the management of patients with breast cancer brain metastases continues to be a significant clinical challenge...
January 21, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/28108859/the-arc-gene-confers-genetic-susceptibility-to-alzheimer-s-disease-in-han-chinese
#5
Rui Bi, Li-Li Kong, Min Xu, Guo-Dong Li, Deng-Feng Zhang, Tao Li, Yiru Fang, Chen Zhang, Buchang Zhang, Yong-Gang Yao
Alzheimer's disease (AD) is the most common form of dementia. The deposition of β-amyloid (Aβ) plaques in the brain was considered one of the main neuropathological hallmarks of AD. As the loss of synapses always occurs during AD progression, AD has been gradually regarded as a "synaptopathy." The activity-regulated cytoskeleton-associated protein (Arc) was recently identified as a key factor for AD due to its active roles in synaptic plasticity, learning, memory, and Aβ generation. However, there is little evidence to support the association of the Arc gene with AD...
January 20, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28108850/baicalein-promotes-neuronal-and-behavioral-recovery-after-intracerebral-hemorrhage-via-suppressing-apoptosis-oxidative-stress-and-neuroinflammation
#6
Ning Wei, Yinghai Wei, Binru Li, Linlin Pang
Intracerebral hemorrhage (ICH) is an important public health problem in neurology, which is not only associated with high mortality but also leading to disability. Yet no satisfactory treatment has been developed. The secondary injury that resulted from a number of self-destructive processes such as neuroinflammation, apoptosis and oxidative stress, is the key factor contributing to ICH-induced brain damage. Baicalein has been proved to improve neuronal functional recovery in rat model of subarachnoid hemorrhage and ischemic brain damage...
January 21, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28108836/smad-dependent-signaling-plays-a-detrimental-role-in-a-fly-model-of-smarcb1-deficiency-and-the-biology-of-atypical-teratoid-rhabdoid-tumors
#7
Astrid Jeibmann, Jacqueline Schulz, Kristin Eikmeier, Pascal D Johann, Katharina Thiel, Isabel Tegeder, Oliver Ambrée, Michael C Frühwald, Stefan M Pfister, Marcel Kool, Werner Paulus, Martin Hasselblatt
Atypical teratoid/rhabdoid tumors (ATRT) are highly malignant brain tumors arising in young children. The majority of ATRT is characterized by inactivation of the chromatin remodeling complex member SMARCB1 (INI1/hSNF5). Little is known, however, on downstream pathways involved in the detrimental effects of SMARCB1 deficiency which might also represent targets for treatment. Using Drosophila melanogaster and the Gal4-UAS system, modifier screens were performed in order to identify the role of SMAD dependent signaling in the lethal phenotype associated with knockdown of snr1, the fly homolog of SMARCB1...
January 20, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28108572/use-of-ldl-receptor-targeting-peptide-vectors-for-in-vitro-and-in-vivo-cargo-transport-across-the-blood-brain-barrier
#8
Yves Molino, Marion David, Karine Varini, Françoise Jabès, Nicolas Gaudin, Aude Fortoul, Karima Bakloul, Maxime Masse, Anne Bernard, Lucile Drobecq, Pascaline Lécorché, Jamal Temsamani, Guillaume Jacquot, Michel Khrestchatisky
The blood-brain barrier (BBB) prevents the entry of many drugs into the brain and, thus, is a major obstacle in the treatment of CNS diseases. There is some evidence that the LDL receptor (LDLR) is expressed at the BBB and may participate in the transport of endogenous ligands from blood to brain, a process referred to as receptor-mediated transcytosis. We previously described a family of peptide vectors that were developed to target the LDLR. In the present study, in vitro BBB models that were derived from either wild-type and LDLR knockout animals (ldlr(-/-)) were used to validate the specific LDLR-dependent transcytosis of LDL via a nondegradative route...
January 20, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28108533/noncerebral-amyloidoses-aspects-on-seeding-cross-seeding-and-transmission
#9
Gunilla T Westermark, Marcus Fändrich, Katarzyna Lundmark, Per Westermark
More than 30 proteins form amyloid in humans, most of them outside of the brain. Deposition of amyloid in extracerebral tissues is very common and seems inevitable for an aging person. Most deposits are localized, small, and probably without consequence, but in some instances, they are associated with diseases such as type 2 diabetes. Other extracerebral amyloidoses are systemic, with life-threatening effects on the heart, kidneys, and other organs. Here, we review how amyloid may spread through seeding and whether transmission of amyloid diseases may occur between humans...
January 20, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28108497/cortical-thickness-and-local-gyrification-in-children-with-developmental-dyslexia
#10
Victoria J Williams, Jenifer Juranek, Paul Cirino, Jack M Fletcher
Developmental dyslexia is frequently associated with atypical brain structure and function within regions of the left hemisphere reading network. To date, few studies have employed surface-based techniques to evaluate cortical thickness and local gyrification in dyslexia. Of the existing cortical thickness studies in children, many are limited by small sample size, variability in dyslexia identification, and the recruitment of prereaders who may or may not develop reading impairment. Further, no known study has assessed local gyrification index (LGI) in dyslexia, which may serve as a sensitive indicator of atypical neurodevelopment...
January 19, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28108491/transcriptome-analysis-identifies-multifaceted-regulatory-mechanisms-dictating-a-genetic-switch-from-neuronal-network-establishment-to-maintenance-during-postnatal-prefrontal-cortex-development
#11
Yvet Kroeze, Martin Oti, Ellen van Beusekom, Roel H M Cooijmans, Hans van Bokhoven, Sharon M Kolk, Judith R Homberg, Huiqing Zhou
The prefrontal cortex (PFC) is one of the latest brain regions to mature, which allows the acquisition of complex cognitive abilities through experience. To unravel the underlying gene expression changes during postnatal development, we performed RNA-sequencing (RNA-seq) in the rat medial PFC (mPFC) at five developmental time points from infancy to adulthood, and analyzed the differential expression of protein-coding genes, long intergenic noncoding RNAs (lincRNAs), and alternative exons. We showed that most expression changes occur in infancy, and that the number of differentially expressed genes reduces toward adulthood...
January 19, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28108476/dynamic-analysis-of-the-mesenchymal-epithelial-transition-of-blood-brain-barrier-forming-glia-in-drosophila
#12
Tina Schwabe, Xiaoling Li, Ulrike Gaul
During development, many epithelia are formed by a mesenchymal-epithelial transition (MET). Here, we examine the major stages and underlying mechanisms of MET during blood-brain barrier formation in Drosophila We show that contact with the basal lamina is essential for the growth of the barrier-forming subperineurial glia (SPG). Septate junctions (SJs), which provide insulation of the paracellular space, are not required for MET, but are necessary for the establishment of polarized SPG membrane compartments...
January 20, 2017: Biology Open
https://www.readbyqxmd.com/read/28108415/how-does-mindfulness-modulate-self-regulation-in-pre-adolescent-children-an-integrative-neurocognitive-review
#13
REVIEW
Rebekah Jane Kaunhoven, Dusana Dorjee
Pre-adolescence is a key developmental period in which complex intrinsic volitional methods of self-regulation are acquired as a result of rapid maturation within the brain networks underlying the self-regulatory processes of attention control and emotion regulation. Fostering adaptive self-regulation skills during this stage of development has strong implications for physical health, emotional and socio-economic outcomes during adulthood. There is a growing interest in mindfulness-based programmes for pre-adolescents with initial findings suggesting self-regulation improvements, however, neurodevelopmental studies on mindfulness with pre-adolescents are scarce...
January 17, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28108396/serotonin-5-ht4-receptors-modulate-the-development-of-glutamatergic-input-to-the-dorsal-raphe-nucleus
#14
Angela Chen, Katherine D Hubbert, Pasha F Foroudi, Vivian F Lu, Skirmantas Janušonis
The dorsal raphe nucleus (DRN) is a major serotonin (5-hydroxytryptamine, 5-HT)-producing region in the central nervous system. It receives glutamatergic inputs from several brain regions, which are reciprocally modulated by serotonergic signals. We investigated whether serotonin 5-HT4 receptors (5-HT4Rs) play a role in the development of glutamatergic control of the DRN, with an emphasis on cortical inputs. Double-label immunohistochemistry and confocal microscopy were used to quantify vesicular glutamate transporter 1 (vGluT1)-immunoreactive terminals in the DRN of mice with a null-mutation in the 5-HT4R gene...
January 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28108359/synaptic-targets-chronic-alcohol-actions
#15
REVIEW
Marisa Roberto, Florence Varodayan
Alcohol acts on numerous cellular and molecular targets to regulate neuronal communication within the brain. Chronic alcohol exposure and acute withdrawal generate prominent neuroadaptations at synapses, including compensatory effects on the expression, localization and function of synaptic proteins, channels and receptors. The present article reviews the literature describing the synaptic effects of chronic alcohol exposure and their relevance for synaptic transmission in the central nervous system. This review is not meant to be comprehensive, but rather to highlight the effects that have been observed most consistently and that are thought to contribute to the development of alcohol dependence and the negative aspects of withdrawal...
January 17, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28108330/pleiotropic-responses-to-methionine-restriction
#16
Gene Ables, Jay Johnson
Methionine restriction (MR) extends lifespan across different species. The main responses of rodent models to MR are well-documented in adipose tissue (AT) and liver, which have reduced mass and improved insulin sensitivity, respectively. Recently, molecular mechanisms that improve healthspan have been identified in both organs during MR. In fat, MR induced a futile lipid cycle concomitant with beige AT accumulation, producing elevated energy expenditure. In liver, MR upregulated fibroblast growth factor 21 and improved glucose metabolism in aged mice and in response to a high-fat diet...
January 17, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28108320/modulation-on-brain-gray-matter-activity-and-white-matter-integrity-by-apoe-%C3%AE%C2%B54-risk-gene-in-cognitively-intact-elderly-a-multimodal-neuroimaging-study
#17
Suping Cai, Yuanyuan Jiang, Yubo Wang, Xiaoming Wu, Junchan Ren, Min Seob Lee, Sunghoon Lee, Liyu Huang
Apolipoprotein E (APOE) ε4 allele is the genetic risk factor with the most established evidence for sporadic Alzheimer's disease. Previous neuroimaging studies have demonstrated insufficiently consistent functional and structural changes among healthy APOE ε4 carriers when compared to non-carriers. Here, in a cognitively intact elderly group (a total of 110: 45 APOE ε4 carriers, 65 non-carriers), we aimed to investigate the potential role of APOE ε4 in the modulation of grey matter activity, white matter integrity, and brain morphology before the development of clinically significant symptoms and signs, by methods of: amplitude of low frequency fluctuations and regional homogeneity analysis based on resting state fMRI, and fiber tractography approach based on diffusion tensor imaging...
January 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28108286/the-impact-of-zika-virus-in-the-brain
#18
Fabiele Baldino Russo, Patricia Cristina Baleeiro Beltrão-Braga
The recent outbreak of ZIKV in Brazil called the attention of the world because the effects of viral infection in the brain under development in fetuses. Consequences of vertical infection comprise brain malformation, especially microcephaly, eye and musculoskeletal abnormalities, among others. In adults, outcomes of infection include meningoencephalitis and Guillain-Barré syndrome. Recent data specific suggest that neural progenitor cells are the main targets of ZIKV infection, causing massive cellular death, which in turns, causes impairment in the neurogenesis process...
January 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28108276/hydrogen-sulfide-reduces-rage-toxicity-through-inhibition-of-its-dimer-formation
#19
Hong Zhou, Lei Ding, Zhiyuan Wu, Xu Cao, Qichun Zhang, Li Lin, Jin-Song Bian
RAGE is important in the development of neurodegenerative diseases. The present study was designed to investigate the effect of hydrogen sulfide (H2S, an endogenous gaseous mediator) on the cytotoxicity caused by RAGE activation during the chronic oxidative stress. Aβ1-42 decreased cell viability and induced cell senescence in SH-SY5Y cells. Treatment with advanced glycation end products (AGEs) induced cell injury in HEK293 cells stably expressing RAGE (HEK293-RAGE) and stimulated inflammatory responses in SH-SY5Y cells...
January 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28108255/regular-exercise-promotes-memory-function-and-enhances-hippocampal-neuroplasticity-in-experimental-autoimmune-encephalomyelitis-mice
#20
Tae-Woon Kim, Yun-Hee Sung
Multiple sclerosis (MS) is a progressive condition affecting the central nervous system (CNS), and is characterized by the development of demyelinated lesions and plaques in the brain and spinal cord. Exercise is beneficial against dementia in elderly patients, so we investigated the effects of exercise on memory in relation to hippocampal demyelination and neuroplasticity in a mouse model of MS (experimental autoimmune encephalomyelitis [EAE]). Mice were randomly divided into three groups: Sham, EAE, and EAE and exercise (EAE+EX)...
January 17, 2017: Neuroscience
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