keyword
MENU ▼
Read by QxMD icon Read
search

Complement and brain

keyword
https://www.readbyqxmd.com/read/28523567/peripheral-viral-challenge-triggers-hippocampal-production-of-inflammatory-proteins
#1
Tiffany Petrisko, Gregory Konat
Peripheral viral infections increase seizure propensity and intensity in susceptible individuals. We have modeled this comorbidity by demonstrating that intraperitoneal (ip) injection of the conventional viral mimetic, polyinosinic-polycytidylic acid (PIC), renders the brain hypersusceptible to seizures induced by kainic acid (KA). At the molecular level, the hippocampus, which is the ictal site of KA-induced seizures, exhibits upregulated expression of messages encoding several inflammatory genes. Here, we profiled temporal expression of these genes at the protein level...
May 18, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28523562/bioinformatics-tools-for-genome-wide-epigenetic-research
#2
Vladimir Espinosa Angarica, Antonio Del Sol
Epigenetics play a central role in the regulation of many important cellular processes, and dysregulations at the epigenetic level could be the source of serious pathologies, such as neurological disorders affecting brain development, neurodegeneration, and intellectual disability. Despite significant technological advances for epigenetic profiling, there is still a need for a systematic understanding of how epigenetics shapes cellular circuitry, and disease pathogenesis. The development of accurate computational approaches for analyzing complex epigenetic profiles is essential for disentangling the mechanisms underlying cellular development, and the intricate interaction networks determining and sensing chromatin modifications and DNA methylation to control gene expression...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28523229/strategy-based-reasoning-training-modulates-cortical-thickness-and-resting-state-functional-connectivity-in-adults-with-chronic-traumatic-brain-injury
#3
Kihwan Han, Rebecca A Davis, Sandra B Chapman, Daniel C Krawczyk
INTRODUCTION: Prior studies have demonstrated training-induced changes in the healthy adult brain. Yet, it remains unclear how the injured brain responds to cognitive training months-to-years after injury. METHODS: Sixty individuals with chronic traumatic brain injury (TBI) were randomized into either strategy-based (N = 31) or knowledge-based (N = 29) training for 8 weeks. We measured cortical thickness and resting-state functional connectivity (rsFC) before training, immediately posttraining, and 3 months posttraining...
May 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28522734/voluntary-control-of-epileptiform-spike-wave-discharges-in-awake-rats
#4
Jeremy A Taylor, Krista M Rodgers, Florencia M Bercum, Carmen J Booth, F Edward Dudek, Daniel S Barth
Genetically inherited absence epilepsy in humans is typically characterized by brief (seconds) spontaneous seizures, which involve spike-wave discharges (SWDs) in the EEG and interruption of consciousness and ongoing behavior. Genetic (inbred) models of this disorder in rats have been used to examine mechanisms, comorbidities and anti-absence drugs. SWDs have also been proposed as models of complex partial seizures (CPSs) following traumatic brain injury (post-traumatic epilepsy; PTE). However, the ictal characteristics of these rat models, including SWDs and associated immobility, are also prevalent in healthy outbred laboratory rats...
May 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28513463/alzheimer-s-disease-against-peptides-products-of-enzymatic-cleavage-app-protein-biological-pathobiological-and-physico-chemical-properties-of-fibrillating-peptides
#5
Małgorzata Marszałek
Various peptides products of enzymatic cleavage of key for Alzheimer's disease Amyloid Precursor Protein (APP) are well known, but still are matter of scientific debate. The Aβ type products are especially challenging for experimental and medical research. This paper outlines several, still poorly known, biological and medical processes such as peptides biology, i.e., formation, biodistribution, translocation, transport and finally removal from brain compartments and body fluids like Intracellular Fluid (ICF), Cerebrospinal Fluid (CSF), Interstitial Fluid (ISF), blood serum or urine...
May 17, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28508372/effect-of-second-hand-tobacco-smoke-on-the-nitration-of-brain-proteins-a-systems-biology-and-bioinformatics-approach
#6
Firas H Kobeissy, Joy Guingab-Cagmat, Adriaan W Bruijnzeel, Mark S Gold, Kevin Wang
Second-hand smoke (SHS) exposure leads to the death of approximately 48,000 nonsmokers per year in the United States alone. SHS exposure has been associated with cardiovascular, respiratory, and neurodegenerative diseases. While cardiac function abnormalities and lung cancer due to SHS have been well characterized, brain injury due to SHS has not undergone a full systematic evaluation. Oxidative stress and nitration have been associated with smoking and SHS exposure. Animal studies suggest that exposure to tobacco smoke increases oxidative stress...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28504607/innate-inflammatory-gene-expression-profiling-in-potential-brain-dead-donors-detailed-investigation-of-the-effect-of-common-corticosteroid-therapy
#7
Reza Gholamnezhadjafari, Nader Tajik, Reza Falak, Reza Aflatoonian, Sanaz Dehghan, Abbas Rezaei
Our study aimed to assess the influence of common methylprednisolone therapy on innate inflammatory factors in potential brain-dead organ donors (BDDs). The study groups consisted of 50 potential BDDs who received 15 mg/kg/d methylprednisolone and 25 live organ donors (LDs) as control group. Innate immunity gene expression profiling was performed by RT-PCR array. Soluble serum cytokines and chemokines, complement components, heat shock protein 70 (HSP70) and high mobility group box-1 (HMGB1) were measured by ELISA...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/28499404/anterograde-monosynaptic-transneuronal-tracers-derived-from-herpes-simplex-virus-1-strain-h129
#8
Wen-Bo Zeng, Hai-Fei Jiang, Ya-Dong Gang, Yi-Ge Song, Zhang-Zhou Shen, Hong Yang, Xiao Dong, Yong-Lu Tian, Rong-Jun Ni, Yaping Liu, Na Tang, Xinyan Li, Xuan Jiang, Ding Gao, Michelle Androulakis, Xiao-Bin He, Hui-Min Xia, Ying-Zi Ming, Youming Lu, Jiang-Ning Zhou, Chen Zhang, Xue-Shan Xia, Yousheng Shu, Shao-Qun Zeng, Fuqiang Xu, Fei Zhao, Min-Hua Luo
BACKGROUND: Herpes simplex virus type 1 strain 129 (H129) has represented a promising anterograde neuronal circuit tracing tool, which complements the existing retrograde tracers. However, the current H129 derived tracers are multisynaptic, neither bright enough to label the details of neurons nor capable of determining direct projection targets as monosynaptic tracer. METHODS: Based on the bacterial artificial chromosome of H129, we have generated a serial of recombinant viruses for neuronal circuit tracing...
May 12, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28487847/recombinant-tghsp70-immunization-protects-against-toxoplasma-gondii-brain-cyst-formation-by-enhancing-inducible-nitric-oxide-expression
#9
Paulo Czarnewski, Ester C B Araújo, Mário C Oliveira, Tiago W P Mineo, Neide M Silva
Toxoplasma gondii is known to cause congenital infection in humans and animals and severe disease in immunocompromised individuals; consequently development of vaccines against the parasite is highly necessary. Under stress conditions, T. gondii expresses the highly immunogenic heat shock protein 70 (TgHSP70). Here, we assessed the protective efficacy of rTgHSP70 immunization combined with Alum in oral ME-49 T. gondii infection and the mechanisms involved on it. It was observed that immunized mice with rTgHSP70 or rTgHSP70 adsorbed in Alum presented a significantly reduced number of cysts in the brain that was associated with increased iNOS+ cell numbers in the organ, irrespective the use of the adjuvant...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28485734/the-effect-of-crack-cocaine-addiction-and-age-on-the-microstructure-and-morphology-of-the-human-striatum-and-thalamus-using-shape-analysis-and-fast-diffusion-kurtosis-imaging
#10
E A Garza-Villarreal, M M Chakravarty, B Hansen, S F Eskildsen, G A Devenyi, D Castillo-Padilla, T Balducci, E Reyes-Zamorano, S N Jespersen, P Perez-Palacios, R Patel, J J Gonzalez-Olvera
The striatum and thalamus are subcortical structures intimately involved in addiction. The morphology and microstructure of these have been studied in murine models of cocaine addiction (CA), showing an effect of drug use, but also chronological age in morphology. Human studies using non-invasive magnetic resonance imaging (MRI) have shown inconsistencies in volume changes, and have also shown an age effect. In this exploratory study, we used MRI-based volumetric and novel shape analysis, as well as a novel fast diffusion kurtosis imaging sequence to study the morphology and microstructure of striatum and thalamus in crack CA compared to matched healthy controls (HCs), while investigating the effect of age and years of cocaine consumption...
May 9, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28484367/introducing-alternative-based-thresholding-for-defining-functional-regions-of-interest-in-fmri
#11
Jasper Degryse, Ruth Seurinck, Joke Durnez, Javier Gonzalez-Castillo, Peter A Bandettini, Beatrijs Moerkerke
In fMRI research, one often aims to examine activation in specific functional regions of interest (fROIs). Current statistical methods tend to localize fROIs inconsistently, focusing on avoiding detection of false activation. Not missing true activation is however equally important in this context. In this study, we explored the potential of an alternative-based thresholding (ABT) procedure, where evidence against the null hypothesis of no effect and evidence against a prespecified alternative hypothesis is measured to control both false positives and false negatives directly...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28482760/association-of-lectin-pathway-protein-levels-and-genetic-variants-early-after-injury-with-outcomes-after-severe-traumatic-brain-injury-a-prospective-cohort-study
#12
Michael Osthoff, Bernhard Walder, Cécile Delhumeau, Marten Trendelenburg, Natacha Turck
The lectin pathway of the complement system has been implicated in secondary ischemic/inflammatory injury after traumatic brain injury (TBI). However, previous experimental studies have yielded conflicting results, and human studies are scarce. In this exploratory study we investigated associations of several lectin pathway proteins early after injury and single-nucleotide polymorphisms (SNP) with outcomes after severe TBI [mortality at 14 days (primary outcome) and consciousness assessed with the Glasgow Coma Scale (GCS) at 14 days, disability assessed with the Glasgow Outcome Scale Extended (GOSE) at 90 days]...
May 8, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28481536/discovery-of-a-small-molecule-probe-that-post-translationally-stabilizes-the-survival-motor-neuron-protein-for-the-treatment-of-spinal-muscular-atrophy
#13
Anne Rietz, Hongxia Li, Kevin M Quist, Jonathan J Cherry, Christian L Lorson, Barrington G Burnett, Nicholas L Kern, Alyssa N Calder, Melanie Fritsche, Hrvoje Lusic, Patrick J Boaler, Sungwoon Choi, Xuechao Xing, Marcie A Glicksman, Gregory D Cuny, Elliot J Androphy, Kevin J Hodgetts
Spinal muscular atrophy (SMA) is the leading genetic cause of infant death. We previously developed a high-throughput assay that employs an SMN2-luciferase reporter allowing identification of compounds that act transcriptionally, enhance exon recognition, or stabilize the SMN protein. We describe optimization and characterization of an analog suitable for in vivo testing. Initially, we identified analog 4m that had good in vitro properties but low plasma and brain exposure in a mouse PK experiment due to short plasma stability; this was overcome by reversing the amide bond and changing the heterocycle...
May 19, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28480333/a-unified-model-of-human-semantic-knowledge-and-its-disorders
#14
Lang Chen, Matthew A Lambon Ralph, Timothy T Rogers
How is knowledge about the meanings of words and objects represented in the human brain? Current theories embrace two radically different proposals: either distinct cortical systems have evolved to represent different kinds of things, or knowledge for all kinds is encoded within a single domain-general network. Neither view explains the full scope of relevant evidence from neuroimaging and neuropsychology. Here we propose that graded category-specificity emerges in some components of the semantic network through joint effects of learning and network connectivity...
March 2017: Nature Human Behaviour
https://www.readbyqxmd.com/read/28476558/low-expression-of-complement-inhibitory-protein-cd59-contributes-to-humoral-autoimmunity-against-astrocytes
#15
Zhen Wang, Wen Guo, Yuanchu Liu, Ye Gong, Xiaoli Ding, Kaibin Shi, Rodolfo Thome, Guang-Xian Zhang, Fu-Dong Shi, Yaping Yan
Neuromyelitis optica spectrum disorder is primarily an anti-aquaporin 4 autoantibody-mediated, central nervous system-restricted channelopathy. Patients frequently develop central nervous system-restricted lesions even though autoantigen aquaporin 4 in neuromyelitis optica spectrum disorder is broadly distributed in the central nervous system and peripheral organs. The cause of such tissue-specific immune response remains largely unknown. We confirmed here that CD59, an inhibitory regulator of the complement membrane attack complex, is expressed and co-localized with aquaporin 4 in peripheral organs but is only minimally expressed in astrocytes in the central nervous system...
May 2, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28475854/peripheral-complement-interactions-with-amyloid-%C3%AE-peptide-erythrocyte-clearance-mechanisms
#16
William D Brubaker, Andrés Crane, Jenny U Johansson, Kevin Yen, Kristina Garfinkel, Diego Mastroeni, Priya Asok, Bonnie Bradt, Marwan Sabbagh, Tanya L Wallace, Courtney Glavis-Bloom, Andrea J Tenner, Joseph Rogers
INTRODUCTION: Although amyloid β peptide (Aβ) is cleared from the brain to cerebrospinal fluid and the peripheral circulation, mechanisms for its removal from blood remain unresolved. Primates have uniquely evolved a highly effective peripheral clearance mechanism for pathogens, immune adherence, in which erythrocyte complement receptor 1 (CR1) plays a major role. METHODS: Multidisciplinary methods were used to demonstrate immune adherence capture of Aβ by erythrocytes and its deficiency in Alzheimer's disease (AD)...
May 2, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28473286/characterization-of-a-novel-murine-model-for-spontaneous-hemorrhagic-stroke-using-in-vivo-pet-and-mr-multiparametric-imaging
#17
Salvador Castaneda Vega, Christine Weinl, Carsten Calaminus, Lisa Wang, Maren Harant, Walter Ehrlichmann, Dennis Thiele, Ursula Kohlhofer, Gerald Reischl, Johann-Martin Hempel, Ulrike Ernemann, Leticia Quintanilla Martinez, Alfred Nordheim, Bernd J Pichler
The clinical use of Magnetic Resonance Imaging (MRI) and Positron Emission Tomography (PET) has proven to be a strong diagnostic tool in the field of neurology. The reliability of these methods to confirm clinical diagnoses has guided preclinical research to utilize these techniques for the characterization of animal disease models. Previously, we demonstrated that an endothelial cell-specific ablation of the murine Serum Response Factor (Srf(iECKO)) results in blood brain barrier (BBB) breakdown and hemorrhagic stroke...
May 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/28462915/developmental-activities-of-the-complement-pathway-in-migrating-neurons
#18
Anna Gorelik, Tamar Sapir, Rebecca Haffner-Krausz, Tsviya Olender, Trent M Woodruff, Orly Reiner
In recent years the notion that malfunctioning of the immune system may result in developmental brain diseases has emerged. However, the role of immune molecules in the developing brain has not been well explored. The complement pathway converges to cleave C3. Here we show that key proteins in the lectin arm of this pathway, MASP1, MASP2 and C3, are expressed in the developing cortex and that neuronal migration is impaired in knockout and knockdown mice. Molecular mimics of C3 cleavage products rescue the migration defects that have been seen following knockdown of C3 or Masp2...
May 2, 2017: Nature Communications
https://www.readbyqxmd.com/read/28462173/method-for-organotypic-tissue-culture-in-the-aged-animal
#19
Jared Schommer, Matthew Schrag, Alexander Nackenoff, Gurdeep Marwarha, Othman Ghribi
Organotypic slicing of brain tissue from young rodents has been used as a powerful model system for biomedical research [1], [2], [3]. Organotypic slicing complements cell culture and in vivo studies in multiple facets. This system can be useful for investigating manipulation of cellular signaling pathways without the hindrance of the blood-brain barrier while sacrificing fewer animals in the process. It also allows for preserved cellular connectivity and local intact circuitry which is a drawback of isolated cell cultures...
2017: MethodsX
https://www.readbyqxmd.com/read/28455369/complement-c5ar1-signaling-promotes-polarization-and-proliferation-of-embryonic-neural-progenitor-cells-through-pkc%C3%AE
#20
Liam G Coulthard, Owen A Hawksworth, Rui Li, Anushree Balachandran, John D Lee, Farshid Sepehrband, Nyoman Kurniawan, Angela Jeanes, David G Simmons, Ernst Wolvetang, Trent M Woodruff
The complement system, typically associated with innate immunity, is emerging as a key controller of non-immune systems including in development, with recent studies linking complement mutations with neurodevelopmental disease. A key effector of the complement response is the activation fragment C5a which, through its receptor C5aR1, is a potent driver of inflammation. Surprisingly, C5aR1 is also expressed during early mammalian embryogenesis, however no clearly defined function is ascribed to C5aR1 in development...
April 28, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
keyword
keyword
50159
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"