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Brain, Behavior, and Immunity

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https://www.readbyqxmd.com/read/28629758/implications-of-the-gut-microbiota-in-vulnerability-to-the-social-avoidance-effects-of-chronic-social-defeat-in-male-mice
#1
Joanna Kasia Szyszkowicz, Alex Wong, Hymie Anisman, Zul Merali, Marie-Claude Audet
Appreciable evidence suggests that perturbations within the gut microbiome and the immune system may play a key role in the pathogenesis of depression stemming from earlier stressful experiences. In the present investigation we examined whether microbial changes in cecum contents were associated with social avoidance behaviors, a feature of depression, and pro-inflammatory variations among socially stressed mice. Male C57BL/6 mice experienced social defeat or a control condition once a day for 10 consecutive days...
June 16, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28625767/early-life-stress-perturbs-the-function-of-microglia-in-the-developing-rodent-brain-new-insights-and-future-challenges
#2
REVIEW
Frances K Johnson, Arie Kaffman
The role of the innate immune system in mediating some of the consequences of childhood abuse and neglect has received increasing attention in recent years. Most of the work to date has focused on the role that neuroinflammation plays in the long-term adult psychiatric and medical complications associated with childhood maltreatment. The effects of stress-induced neuroinflammation on neurodevelopment have received little attention because until recently this issue has not been studied systematically in animal models of early life stress...
June 15, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28624534/glutaminase-c-overexpression-in-the-brain-induces-learning-deficits-synaptic-dysfunctions-and-neuroinflammation-in-mice
#3
Yi Wang, Yuju Li, Runze Zhao, Beiqing Wu, Blaise Lanoha, Zenghan Tong, Justin Peer, Jianhui Liu, Huangui Xiong, Yunlong Huang, Jialin Zheng
Glutaminolysis, a metabolic process that converts glutamine to glutamate, is particularly important for the central nervous system since glutamate is the major transmitter of excitatory synapses. Glutaminase is the mitochondrial enzyme that catalyzes the first step of glutaminolysis. Two genes encode at least four isoforms of glutaminase in humans. GLS1 gene encodes isoforms kidney-type glutaminase and glutaminase C (GAC) through alternative splicing, whereas GLS2 gene encodes liver-type glutaminase isoforms...
June 14, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28627459/peripheral-blood-gene-expression-of-acute-phase-proteins-in-people-with-first-episode-psychosis
#4
Jie Yin Yee, Milawaty Nurjono, Wai Yee Ng, Stephanie Ruth Teo, Tih-Shih Lee, Jimmy Lee
BACKGROUND: There is a growing interest in the association between schizophrenia and the activation of inflammatory system with signs of acute phase (AP) response. Majority of such studies had focused on C-reactive protein (CRP). The aims of the present study were (i) to examine the gene expression profiles of other acute phase proteins (APP), namely haptoglobin (HP), alpha-1 antitrypsin (A1T), and alpha-2 macroglobulin (A2M) in patients with first episode psychosis (FEP) over a period of three months and (ii) to explore the association between APP levels and severity of symptoms...
June 13, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28619247/childhood-maltreatment-severity-is-associated-with-elevated-c-reactive-protein-and-body-mass-index-in-adult-with-schizophrenia-and-bipolar-diagnoses
#5
Monica Aas, Ingrid Dieset, Sigrun Hope, Eva Hoseth, Ragni Mørch, Elina Reponen, Nils Eiel Steen, Jannicke F Anderssen, Thor Ueland, Pål Aukrust, Ingrid Agartz, Ole A Andreassen, Ingrid Melle
BACKGROUND: Several studies have described an association between childhood maltreatment and inflammatory markers in the psychotic disorders (schizophrenia [SZ] and bipolar disorder [BD]). Previous studies have been relatively small (<50 participants), and the severity of abuse and the putative influence of body mass index (BMI) have not been properly investigated. METHODS: The combined effects of childhood abuse severity and clinical diagnosis on inflammatory markers were investigated in a large sample (n=483) of patients with a disorder on the psychosis spectrum and in healthy controls (HCs)...
June 12, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28610747/cathepsin-b-plays-a-critical-role-in-inducing-alzheimer-s-disease-like-phenotypes-following-chronic-systemic-exposure-to-lipopolysaccharide-from-porphyromonas-gingivalis-in-mice
#6
Zhou Wu, Junjun Ni, Yicong Liu, Jessica L Teeling, Fumiko Takayama, Alex Collcutt, Paul Ibbett, Hiroshi Nakanishi
A number of clinical and experimental studies have revealed a strong association between periodontitis and accelerated cognitive decline in Alzheimer's disease (AD); however, the mechanism of the association is unknown. In the present study, we tested the hypothesis that cathepsin (Cat) B plays a critical role in the initiation of neuroinflammation and neural dysfunction following chronic systemic exposure to lipopolysaccharide from Porphyromonas gingivalis (PgLPS) in mice (1mg/kg, daily, intraperitoneally)...
June 10, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28606462/growing-literature-but-limited-evidence-a-systematic-review-regarding-prebiotic-and-probiotic-interventions-for-those-with-traumatic-brain-injury-and-or-posttraumatic-stress-disorder
#7
Lisa A Brenner, Kelly A Stearns-Yoder, Adam S Hoffberg, Molly E Penzenik, Amy J Starosta, Theresa D Hernández, Daniel A Hadidi, Christopher A Lowry
Traumatic brain injury (TBI) is highly prevalent among a wide-range of populations, including civilians, military personnel, and Veterans. TBI sequelae may be further exacerbated by symptoms associated with frequently occurring co-morbid psychiatric conditions including posttraumatic stress disorder (PTSD). This is particularly true among the population of military personnel from recent conflicts in Iraq and Afghanistan with a history of mild TBI (mTBI) and PTSD. The need for efficacious treatments for TBI and co-morbid PTSD is significant, and evidence-based interventions for these frequently co-occurring conditions are limited...
June 9, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28606461/the-cost-of-childhood-disadvantage-for-future-generations
#8
Anna L Marsland
No abstract text is available yet for this article.
June 9, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28587928/beneficial-potential-of-intravenously-administered-il-6-in-improving-outcome-after-murine-experimental-stroke
#9
Mads Hjortdal Grønhøj, Bettina Hjelm Clausen, Christina Fenger, Kate Lykke Lambertsen, Bente Finsen
Interleukin-6 (IL-6) is a pleiotropic cytokine with neuroprotective properties. Still, the therapeutic potential of IL-6 after experimental stroke has not yet been investigated in a clinically relevant way. Here, we investigated the therapeutic use of intravenously administered IL-6 and the soluble IL-6 receptor (sIL-6R) alone or in combination, early after permanent middle cerebral artery occlusion (pMCAo) in mice. IL-6 did not affect the infarct volume in C57BL/6 mice, at neither 24 nor 72 h after pMCAo but reduced the infarct volume in IL-6 knockout mice at 24 h after pMCAo...
June 3, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28579520/live-imaging-of-the-innate-immune-response-in-neonates-reveals-differential-tlr2-dependent-activation-patterns-in-sterile-inflammation-and-infection
#10
Melanie Lalancette-Hébert, Joel Faustino, Sai Sampath Thammisetty, Sophorn Chip, Zinaida S Vexler, Jasna Kriz
Activation of microglial cells in response to brain injury and/or immune stimuli is associated with a marked induction of Toll-like receptors (TLRs). While in adult brain, the contribution of individual TLRs, including TLR2, in pathophysiological cascades has been well established, their role and spatial and temporal induction patterns in immature brain are far less understood. To examine whether infectious stimuli and sterile inflammatory stimuli trigger distinct TLR2-mediated innate immune responses, we used three models in postnatal day 9 (P9) mice, a model of infection induced by systemic endotoxin injection and two models of sterile inflammation, intra-cortical IL-1β injection and transient middle cerebral artery occlusion (tMCAO)...
June 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28579519/contributions-of-polygenic-risk-for-obesity-to-ptsd-related-metabolic-syndrome-and-cortical-thickness
#11
Erika J Wolf, Danielle R Miller, Mark W Logue, Jennifer Sumner, Tawni B Stoop, Elizabeth C Leritz, Jasmeet P Hayes, Annjanette Stone, Steven A Schichman, Regina E McGlinchey, William P Milberg, Mark W Miller
BACKGROUND: Research suggests that posttraumatic stress disorder (PTSD) is associated with metabolic syndrome (MetS) and that PTSD-associated MetS is related to decreased cortical thickness. However, the role of genetic factors in these associations is unclear. This study evaluated contributions of polygenic obesity risk and PTSD to MetS and of MetS and polygenic obesity risk to cortical thickness. METHODS: 196 white, non-Hispanic veterans of the wars in Iraq and Afghanistan underwent clinical diagnostic interviews, physiological assessments, and genome-wide genotyping; 168 also completed magnetic resonance imaging scans...
June 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28559011/protein-tyrosine-phosphatase-%C3%AF-regulates-autoimmune-encephalomyelitis-development
#12
Yosuke Ohtake, Weimin Kong, Rashad Hussain, Makoto Horiuchi, Michel L Tremblay, Doina Ganea, Shuxin Li
Protein tyrosine phosphatases (PTPs) play essential roles in regulating signaling events in multiple cells by tyrosine dephosphorylation. One of them, PTPσ, appears important in regulating function of plasmacytoid dendritic cells (pDC). Here we report that PTPσ deletion in knockout mice and inhibition with a selective antagonist peptide exacerbated symptoms of experimental autoimmune encephalomyelitis (EAE) by enhancing axon and myelin damage in the spinal cord. PTPσ-/- mice displayed pro-inflammatory profiles in the spinal cord and lymphoid organs following MOG peptide immunization...
May 27, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28546059/inflammation-and-attentional-bias-in-breast-cancer-survivors
#13
Chloe C Boyle, Patricia A Ganz, Kathleen M Van Dyk, Julienne E Bower
Evidence suggests an association between inflammation and depression, although findings are mixed. Focusing on core processes in depression may clarify associated biological underpinnings. Negative cognitive bias is a key component of depression, but has not been examined in relation to inflammation. Thus, we tested the hypothesis that elevated inflammatory markers would be associated with negative attentional bias in a sample of 91 breast cancer survivors. Participants were drawn from a larger study and provided blood samples for assessment of peripheral markers of inflammation and completed questionnaires and neuropsychological testing...
May 22, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28546058/the-role-of-il-6-in-neurodevelopment-after-prenatal-stress
#14
Serena B Gumusoglu, Rebecca S Fine, Samuel J Murray, Jada L Bittle, Hanna E Stevens
Prenatal stress exposure is associated with adverse psychiatric outcomes, including autism and ADHD, as well as locomotor and social inhibition and anxiety-like behaviors in animal offspring. Similarly, maternal immune activation also contributes to psychiatric risk and aberrant offspring behavior. The mechanisms underlying these outcomes are not clear. Offspring microglia and the pro-inflammatory cytokine interleukin-6 (IL-6), known to influence microglia, may serve as common mechanisms between prenatal stress and prenatal immune activation...
May 22, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28532818/tdp-43-upregulation-mediated-by-the-nlrp3-inflammasome-induces-cognitive-impairment-in-2-2-4-4-tetrabromodiphenyl-ether-bde-47-treated-mice
#15
Juan Zhuang, Xin Wen, Yan-Qiu Zhang, Qun Shan, Zi-Feng Zhang, Gui-Hong Zheng, Shao-Hua Fan, Meng-Qiu Li, Dong-Mei Wu, Bin Hu, Jun Lu, Yuan-Lin Zheng
It is now commonly known that exposure to polybrominated diphenyl ethers (PBDEs) may cause neurotoxicity and cognitive deficits in children as well as adults, but the underlying mechanisms are still not clear. In the present study, we aimed to elucidate the potential underlying mechanism of 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47)-induced neurotoxicity and cognitive impairment. Our results showed that BDE-47-treated mice exhibited impaired cognition and robust upregulation of nuclear TDP-43 in the hippocampus...
May 19, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28529072/rescue-of-il-1%C3%AE-induced-reduction-of-human-neurogenesis-by-omega-3-fatty-acids-and-antidepressants
#16
Alessandra Borsini, Silvia Alboni, Mark A Horowitz, Luis M Tojo, Giuseppe Cannazza, Kuan-Pin Su, Carmine M Pariante, Patricia A Zunszain
Both increased inflammation and reduced neurogenesis have been associated with the pathophysiology of major depression. We have previously described how interleukin-1 (IL-1) β, a pro-inflammatory cytokine increased in depressed patients, decreases neurogenesis in human hippocampal progenitor cells. Here, using the same human in vitro model, we show how omega-3 (ω-3) polyunsaturated fatty acids and conventional antidepressants reverse this reduction in neurogenesis, while differentially affecting the kynurenine pathway...
May 18, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28529071/exogenous-fgf2-reverses-depressive-like-behaviors-and-restores-the-suppressed-fgf2-erk1-2-signaling-and-the-impaired-hippocampal-neurogenesis-induced-by-neuroinflammation
#17
Ming-Ming Tang, Wen-Juan Lin, Jun-Tao Zhang, Ya-Wei Zhao, Ying-Cong Li
Our previous work demonstrated that neuroinflammation evoked by triple repeated central LPS challenges inhibited adult hippocampal neurogenesis that were correlated with the depressive-like behavioral symptoms induced by neuroinflammation. These findings suggest that hippocampal neurogenesis might be one of biological mechanisms underlying depression induced by neuroinflammation and targeting neurogenesis might lead to new therapeutic strategies for the treatment of depression. In this study, we manipulated adult hippocampal neurogenesis using fibroblast growth factor 2 (FGF2), one crucial molecule modulating cell proliferation and survival in central nervous system, and investigate the involvement and the potential therapeutic effects of FGF2 on neuroinflammation-induced depression...
May 18, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28526436/intracranial-il-17a-overexpression-decreases-cerebral-amyloid-angiopathy-by-upregulation-of-abca1-in-an-animal-model-of-alzheimer-s-disease
#18
Junling Yang, Jinghong Kou, Robert Lalonde, Ken-Ichiro Fukuchi
Neuroinflammation is a pervasive feature of Alzheimer's disease (AD) and characterized by activated microglia, increased proinflammatory cytokines and/or infiltrating immune cells. T helper 17 (Th17) cells are found in AD brain parenchyma and interleukin-17A (IL-17A) is identified around deposits of aggregated amyloid β protein (Aβ). However, the role of IL-17A in AD pathogenesis remains elusive. We overexpressed IL-17A in an AD mouse model via recombinant adeno-associated virus serotype 5 (rAAV5)-mediated intracranial gene delivery...
May 17, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28526435/the-bidirectional-gut-brain-microbiota-axis-as-a-potential-nexus-between-traumatic-brain-injury-inflammation-and-disease
#19
Mark H Sundman, Nan-Kuei Chen, Vignesh Subbian, Ying-Hui Chou
As head injuries and their sequelae have become an increasingly salient matter of public health, experts in the field have made great progress elucidating the biological processes occurring within the brain at the moment of injury and throughout the recovery thereafter. Given the extraordinary rate at which our collective knowledge of neurotrauma has grown, new insights may be revealed by examining the existing literature across disciplines with a new perspective. This article will aim to expand the scope of this rapidly evolving field of research beyond the confines of the central nervous system (CNS)...
May 17, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28512033/bifidobacterium-cect-7765-modulates-early-stress-induced-immune-neuroendocrine-and-behavioral-alterations-in-mice
#20
A Moya-Pérez, A Perez-Villalba, A Benítez-Páez, I Campillo, Y Sanz
Emerging evidence suggests that there is a window of opportunity within the early developmental period, when microbiota-based interventions could play a major role in modulating the gut-brain axis and, thereby, in preventing mood disorders. This study aims at evaluating the effects and mode of action of Bifidobacterium pseudocatenulatum CECT 7765 in a murine model of chronic stress induced by maternal separation (MS). C57Bl/6J male breast-fed pups were divided into four groups, which were subjected or not to MS and supplemented with placebo or B...
May 13, 2017: Brain, Behavior, and Immunity
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