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Brain, Behavior, and Immunity

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https://www.readbyqxmd.com/read/28935156/activation-of-il-17-receptor-leads-to-increased-oxidative-inflammation-in-peripheral-monocytes-of-autistic-children
#1
Ahmed Nadeem, Sheikh F Ahmad, Sabry M Attia, Saleh A Bakheet, Naif O Al-Harbi, Laila Y Al-Ayadhi
Millions of children are affected by different neurodevelopmental disorders, out of which autismspectrum disorder (ASD) poses a major hurdle to normal life style due to associated behavioral abnormalities. Several studies have shown an increased expression/release of Th17 related cytokine, IL-17A in ASD. IL-17A may enhance neuroinflammation via its IL-17A receptor, i.e. IL-17RA expressed in immune cells (such as monocytes) of autistic children. Increased oxidative stress has been implicated in a number of neuropsychiatric disorders including ASD...
September 18, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28928004/syncytin-1-an-endogenous-retroviral-protein-triggers-the-activation-of-crp-via-tlr3-signal-cascade-in-glial-cells
#2
Xiuling Wang, Zhongchun Liu, Peigang Wang, Shan Li, Jie Zeng, Xiaoning Tu, Qiujin Yan, Zheman Xiao, Mengxian Pan, Fan Zhu
Schizophrenia is a devastating psychiatric disorder that impacts on social functioning and quality of life, and there is accumulating evidence that inflammation is a potential pathogenic mechanism of schizophrenia. However, the mechanism of inflammation possibly occurred in schizophrenia has not been well understood. The endogenous retroviral protein syncytin-1 and inflammatory marker CRP are both abnormally expressed in schizophrenia patients. CRP is one of the markers of bacterial infection generally. Less clear is whether virus or viral protein can trigger the activation of CRP...
September 16, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28923405/positive-mood-on-the-day-of-influenza-vaccination-predicts-vaccine-effectiveness-a-prospective-observational-cohort-study
#3
Kieran Ayling, Lucy Fairclough, Paddy Tighe, Ian Todd, Vanessa Halliday, Jon Garibaldi, Simon Royal, Aljali Hamed, Heather Buchanan, Kavita Vedhara
Influenza vaccination is estimated to only be effective in 17-53% of older adults. Multiple patient behaviors and psychological factors have been shown to act as 'immune modulators' sufficient to influence vaccination outcomes. However, the relative importance of such factors is unknown as they have typically been examined in isolation. The objective of the present study was to explore the effects of multiple behavioral (physical activity, nutrition, sleep) and psychological influences (stress, positive mood, negative mood) on the effectiveness of the immune response to influenza vaccination in the elderly...
September 15, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28923404/hla-g-coding-region-polymorphism-is-skewed-in-autistic-spectrum-disorders
#4
Franca R Guerini, Elisabetta Bolognesi, Matteo Chiappedi, Enrico Ripamonti, Alessandro Ghezzo, Michela Zanette, Stefano Sotgiu, Maria Martina Mensi, Alessandra Carta, Maria Paola Canevini, Milena Zanzottera, Cristina Agliardi, Andrea S Costa, Umberto Balottin, Mario Clerici
Different isoforms of HLA-G protein are endowed with a differential ability to induce allogenic tolerance during pregnancy. As prenatal immune activation is suggested to play a role in the onset of autistic spectrum disorders (ASD), we evaluated HLA G*01:01-*01:06 allelic polymorphism in a cohort of Italian children affected by ASD (N=111) their mothers (N=81), and their healthy siblings (N=39). DNA sequencing analysis of HLA-G exon 2, 3 and 4 was used to obtain HLA-G allelic frequencies; alleles distribution was compared with that of two control groups of Caucasoid couples of multiparous women and their partners from Brazil and Denmark...
September 15, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28918081/developmental-alcohol-exposure-impairs-synaptic-plasticity-without-overtly-altering-microglial-function-in-mouse-visual-cortex
#5
Elissa L Wong, Nina M Lutz, Victoria A Hogan, Cassandra E Lamantia, Helene R McMurray, Jason R Myers, John M Ashton, Ania K Majewska
Fetal alcohol spectrum disorder (FASD), caused by gestational ethanol (EtOH) exposure, is one of the most common causes of non-heritable and life-long mental disability worldwide, with no standard treatment or therapy available. While EtOH exposure can alter the function of both neurons and glia, it is still unclear how EtOH influences brain development to cause deficits in sensory and cognitive processing later in life. Microglia play an important role in shaping synaptic function and plasticity during neural circuit development and have been shown to mount an acute immunological response to EtOH exposure in certain brain regions...
September 13, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28911981/peripheral-immune-cells-infiltrate-into-sites-of-secondary-neurodegeneration-after-ischemic-stroke
#6
K A Jones, S Maltby, M W Plank, M Kluge, M Nilsson, P S Foster, F R Walker
Experimental stroke leads to microglia activation and progressive neuronal loss at sites of secondary neurodegeneration (SND). These lesions are remote from, but synaptically connected to, primary infarction sites. Previous studies have demonstrated that immune cells are present in sites of infarction in the first hours and days after stroke, and are associated with increased neurodegeneration in peri-infarct regions. However, it is not known whether immune cells are also present in more distal sites where SND occurs...
September 11, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28911980/chromatin-organization-as-an-indicator-of-glucocorticoid-induced-natural-killer-cell-dysfunction
#7
Michael S Misale, Linda Witek Janusek, Dina Tell, Herbert L Mathews
It is well-established that psychological distress reduces natural killer cell immune function and that this reduction can be due to the stress-induced release of glucocorticoids. Glucocorticoids are known to alter epigenetic marks associated with immune effector loci, and are also known to influence chromatin organization. The purpose of this investigation was to assess the effect of glucocorticoids on natural killer cell chromatin organization and to determine the relationship of chromatin organization to natural killer cell effector function, e...
September 11, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28903062/inflammatory-dietary-patterns-and-depressive-symptoms-in-italian-older-adults
#8
Esther Vermeulen, Ingeborg A Brouwer, Karien Stronks, Stefania Bandinelli, Luigi Ferrucci, Marjolein Visser, Mary Nicolaou
BACKGROUND: Older adults are more susceptible to higher inflammatory levels and depression. Moreover, diet may influence inflammation as well as depression but no previous study examined whether inflammatory dietary patterns are related to depression in an older population. To investigate the longitudinal association between inflammatory dietary patterns (using reduced rank regression (RRR)) and depressive symptoms in a population sample of Italian older adults. METHODS: We included 827 participants (aged≥65years) at baseline in 1998...
September 10, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28893563/the-impact-of-murine-lrrk2-g2019s-transgene-overexpression-on-acute-responses-to-inflammatory-challenge
#9
Darcy Litteljohn, Chris Rudyk, Zach Dwyer, Kyle Farmer, Teresa Fortin, Shawn Hayley
The most common Parkinson's disease (PD) mutation is the gain-of-function LRRK2 G2019S variant, which has also been linked to inflammatory disease states. Yet, little is known of the role of G2019S in PD related complex behavioral or immune/hormonal processes in response to inflammatory/toxicant challenges. Hence, we characterized the behavioural, neuroendocrine-immune and central monoaminergic responses in G2019S overexpressing mutants following systemic interferon-gamma (IFN-γ) or lipopolysaccharide (LPS) administration...
September 8, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28890156/the-microbiota-influences-cell-death-and-microglial-colonization-in-the-perinatal-mouse-brain
#10
Alexandra Castillo-Ruiz, Morgan Mosley, Arlene J George, Lamiyah F Mussaji, Evan F Fullerton, Elara M Ruszkowski, Andrew J Jacobs, Andrew T Gewirtz, Benoit Chassaing, Nancy G Forger
The mammalian fetus develops in a largely sterile environment, and direct exposure to a complex microbiota does not occur until birth. We took advantage of this to examine the effect of the microbiota on brain development during the first few days of life. The expression of anti- and pro-inflammatory cytokines, developmental cell death, and microglial colonization in the brain were compared between newborn conventionally colonized mice and mice born in sterile, germ-free (GF) conditions. Expression of the pro-inflammatory cytokines interleukin 1β and tumor necrosis factor α was markedly suppressed in GF newborns...
September 7, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28890155/antibiotic-induced-microbiota-perturbation-causes-gut-endocannabinoidome-changes-hippocampal-neuroglial-reorganization-and-depression-in-mice
#11
F Guida, F Turco, M Iannotta, D De Gregorio, I Palumbo, G Sarnelli, A Furiano, F Napolitano, S Boccella, L Luongo, M Mazzitelli, A Usiello, F De Filippis, F A Iannotti, F Piscitelli, D Ercolini, V de Novellis, V Di Marzo, R Cuomo, S Maione
The microbiota-gut-brain axis (MGBA) regulates the reciprocal interaction between chronic inflammatory bowel and psychiatric disorders. This interaction involves multiple pathways that are highly debated. We examined the behavioural, biochemical and electrophysiological alterations, as well as gut microbiota composition in a model of antibiotic-induced experimental dysbiosis. Inflammation of the small intestine was also assessed. Mice were exposed to a mixture of antimicrobials for 2weeks. Afterwards, they received Lactobacillus casei DG (LCDG) or a vehicle for up to 7days via oral gavage...
September 7, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28888668/effects-of-obesity-on-depression-a-role-for-inflammation-and-the-gut-microbiota
#12
REVIEW
Julieta Schachter, Jan Martel, Chuan-Sheng Lin, Chih-Jung Chang, Tsung-Ru Wu, Chia-Chen Lu, Yun-Fei Ko, Hsin-Chih Lai, David M Ojcius, John D Young
Depression is a mental disorder associated with environmental, genetic and psychological factors. Recent studies indicate that chronic neuro-inflammation may affect brain physiology and alter mood and behavior. Consumption of a high-fat diet leads to obesity and chronic systemic inflammation. The gut microbiota mediates many effects of a high-fat diet on human physiology and may also influence the mood and behavior of the host. We review here recent studies suggesting the existence of a link between obesity, the gut microbiota and depression, focusing on the mechanisms underlying the effects of a high-fat diet on chronic inflammation and brain physiology...
September 6, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28888667/preimmunization-with-a-heat-killed-preparation-of-mycobacterium-vaccae-enhances-fear-extinction-in-the-fear-potentiated-startle-paradigm
#13
James H Fox, James E Hassell, Philip H Siebler, Mathew R Arnold, Andrew K Lamb, David G Smith, Heidi E W Day, Tessa M Smith, Emma M Simmerman, Alexander A Outzen, Kaley S Holmes, Christopher J Brazell, Christopher A Lowry
The hygiene hypothesis or "Old Friends" hypothesis proposes that inflammatory diseases are increasing in modern urban societies, due in part to reduced exposure to microorganisms that drive immunoregulatory circuits, and a failure to terminate inappropriate inflammatory responses. Inappropriate inflammation is also emerging as a risk factor for trauma-related, anxiety, and affective disorders, including posttraumatic stress disorder (PTSD), which is characterized as persistent re-experiencing of the trauma after a traumatic experience...
September 6, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28867283/kynurenic-acid-is-reduced-in-females-and-oral-contraceptive-users-implications-for-depression
#14
Timothy B Meier, Wayne C Drevets, T Kent Teague, Brent E Wurfel, Sven C Mueller, Jerzy Bodurka, Robert Dantzer, Jonathan Savitz
The incidence of depression is approximately 2-fold greater in women than men but the biological mechanisms underlying this phenomenon remain unclear. One potential mechanism that has been understudied is immune function, which is modulated by sex hormones and differs considerably between males and females. The immune-regulating kynurenine pathway previously has been implicated in the pathogenesis of mood disorders. In particular, a decreased ratio of neuroprotective (kynurenic acid; KynA) to neurotoxic (3-hydroxykynurenine; 3HK and quinolinic acid; QA) kynurenine pathway metabolites has been reported in several mood disorder subtypes...
September 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28867282/trif-contributes-to-epileptogenesis-in-temporal-lobe-epilepsy-during-tlr4-activation
#15
Fa-Xiang Wang, Xiao-Lin Yang, Yuan-Shi Ma, Yu-Jia Wei, Mei-Hua Yang, Xin Chen, Bing Chen, Qian He, Qing-Wu Yang, Hui Yang, Shi-Yong Liu
Increasing evidence indicates that inflammatory processes play a crucial role in the etiopathology of epilepsy and seizure disorders. The Toll/IL-1R domain-containing adapter-inducing IFN-β (TRIF) activated several transcriptions leading to the production of pro-inflammatory cytokines in the central nervous system, which suggests a potential role for TRIF in the epileptogenesis of epilepsy. In this study, we investigated the roles of TRIF in human and mice epileptogenic tissues. Western blot and immunohistochemistry assays showed that the expression of TRIF was significantly upregulated in neurons and glial cells in both human epileptic tissues and mouse models, and positively correlated with seizure frequency...
September 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28867281/childhood-victimization-and-inflammation-in-young-adulthood-a-genetically-sensitive-cohort-study
#16
Jessie R Baldwin, Louise Arseneault, Avshalom Caspi, Helen L Fisher, Terrie E Moffitt, Candice L Odgers, Carmine Pariante, Antony Ambler, Rosamund Dove, Agnieszka Kepa, Timothy Matthews, Anne Menard, Karen Sugden, Benjamin Williams, Andrea Danese
OBJECTIVE: Childhood victimization is an important risk factor for later immune-related disorders. Previous evidence has demonstrated that childhood victimization is associated with elevated levels of inflammation biomarkers measured decades after exposure. However, it is unclear whether this association is (1) already detectable in young people, (2) different in males and females, and (3) confounded by genetic liability to inflammation. Here we sought to address these questions. METHOD: Participants were 2232 children followed from birth to age 18years as part of the Environmental Risk (E-Risk) Longitudinal Twin Study...
September 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28867284/crp-polymorphisms-and-dna-methylation-of-the-aim2-gene-influence-associations-between-trauma-exposure-ptsd-and-c-reactive-protein
#17
M W Miller, H Maniates, E J Wolf, M W Logue, S A Schichman, A Stone, W Milberg, R McGlinchey
BACKGROUND: Recent studies have implicated inflammatory processes in the pathophysiology of posttraumatic stress disorder (PTSD). C-reactive protein (CRP) is a widely-used measure of peripheral inflammation, but little is known about the genetic and epigenetic factors that influence blood levels of C-reactive protein (CRP) in individuals with PTSD. METHODS: Participants were 286 U.S. military veterans of post-9/11 conflicts (57% with current PTSD). Analyses focused on single nucleotide polymorphisms (SNPs) in the CRP gene and DNA methylation at cg10636246 in AIM2-a locus recently linked to CRP levels through results from a large-scale epigenome-wide association study...
August 31, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28867280/interaction-between-childhood-maltreatment-on-immunogenetic-risk-in-depression-discovery-and-replication-in-clinical-case-control-samples
#18
S Cohen-Woods, H L Fisher, D Ahmetspahic, K Douroudis, D Stacey, G M Hosang, A Korszun, M Owen, N Craddock, V Arolt, U Dannowski, G Breen, I W Craig, A Farmer, B T Baune, C M Lewis, R Uher, P McGuffin
Major depressive disorder (MDD) is a prevalent disorder with moderate heritability. Both MDD and interpersonal adversity, including childhood maltreatment, have been consistently associated with elevated inflammatory markers. We investigated interaction between exposure to childhood maltreatment and extensive genetic variation within the inflammation pathway (CRP, IL1b, IL-6, IL11, TNF, TNFR1, and TNFR2) in relation to depression diagnosis. The discovery RADIANT sample included 262 cases with recurrent DSM-IV/ICD-10 MDD, and 288 unaffected controls...
August 31, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28864260/interferon-%C3%A9-mediated-signaling-in-the-brain-endothelium-is-critical-for-inflammation-induced-aversion
#19
Michael Fritz, Anna M Klawonn, Maarit Jaarola, David Engblom
Systemic inflammation elicits malaise and a negative affective state. The mechanism underpinning the aversive component of inflammation include cerebral prostaglandin synthesis and modulation of dopaminergic reward circuits, but the messengers that mediate the signaling between the peripheral inflammation and the brain have not been sufficiently characterized. Here we investigated the role of interferon-ɣ (IFN-ɣ) in the aversive response to systemic inflammation induced by a low dose (10μg/kg) of lipopolysaccharide (LPS) in mice...
August 30, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28860068/protraction-of-neuropathic-pain-by-morphine-is-mediated-by-spinal-damage-associated-molecular-patterns-damps-in-male-rats
#20
Peter M Grace, Keith A Strand, Erika L Galer, Kenner C Rice, Steven F Maier, Linda R Watkins
We have recently reported that a short course of morphine, starting 10days after sciatic chronic constriction injury (CCI), prolonged the duration of mechanical allodynia for months after morphine ceased. Maintenance of this morphine-induced persistent sensitization was dependent on spinal NOD-like receptor protein 3 (NLRP3) inflammasomes-protein complexes that proteolytically activate interleukin-1β (IL-1β) via caspase-1. However, it is still unclear how NLRP3 inflammasome signaling is maintained long after morphine is cleared...
August 30, 2017: Brain, Behavior, and Immunity
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