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Neuroimmunomodulation

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https://www.readbyqxmd.com/read/29332092/early-life-stress-activates-glial-cells-in-the-hippocampus-but-attenuates-cytokine-secretion-in-response-to-an-immune-challenge-in-rat-pups
#1
Luis Miguel Saavedra, Bertha Fenton Navarro, Luz Torner
OBJECTIVE: Early life stress (ELS) increases the vulnerability to developing psychopathological disorders in adulthood that are accompanied by brain inflammatory processes. However, it is not known how a combined double hit (stress and immune) at an early age affects the response of the neuroimmune system. Here we investigated the effect of periodic maternal separation (MS) followed by administration of lipopolysaccharide (LPS) on glial cells in the CA3 region and hilus of the hippocampus and on cytokine release on postnatal day (PN) 15...
January 13, 2018: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29301134/suprachiasmatic-nucleus-and-subordinate-brain-oscillators-clock-gene-desynchronization-by-neuroinflammation
#2
Leila Maria Guissoni Campos, Rogerio Leone Buchaim, Nathani Cristina da Silva, Caio Sergio Galina Spilla, Alessandre Hataka, Luciana Pinato
OBJECTIVE: The clock genes Period (per) 1 and 2 are essential components in the generation and adjustment of biological circadian rhythms by the suprachiasmatic nucleus (SCN). Both genes are also rhythmically present in extrahypothalamic areas such as the hippocampus and cerebellum, considered subordinate oscillators. Several pathological conditions alter rhythmic biological phenomena, but the mechanisms behind these changes involving the clock genes are not well defined. The current study investigated changes in PER1 and PER2 immunoreactivity in the SCN, hippocampus, and cerebellum in a neuroinflammation model...
January 5, 2018: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29161707/a-novel-animal-model-simulating-the-beginning-of-combat-exposure
#3
Dongsoo Kim, Chang Yul Kim, Hyojin Koo, Yong Heo, Kicheol Cheon
OBJECTIVE: Predator stress, social defeat stress, and fear conditioning animal models have been applied to investigate combat-related posttraumatic stress disorder (PTSD). However, no animal model psychopharmacological studies have investigated prevention of somatization of increased mental stress and fatigue at the beginning of combat exposure. This study utilized a novel animal model simulating the beginning of combat exposure that aided specification of a set of biomarkers. METHODS: Psychological stress was induced by both inescapable electric foot shock and noise stimuli...
November 22, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29151103/immunoregulatory-role-of-cannabinoids-during-infectious-disease
#4
Rosalía Hernández-Cervantes, Mónica Méndez-Díaz, Óscar Prospéro-García, Jorge Morales-Montor
Although the endocannabinoid system (ECS) is involved in the regulation of several physiological processes, including sleep and the immune response, its role during infections has not been fully studied. It is well known that the use of this drug increases susceptibility to infections because of the impact on the modulation of the immune system. Concerning the medicinal or recreational use of marijuana, its influence on the course of an infection, whether this has been caused by bacteria, viruses, parasites, and to a lesser degree, fungi, has been reported...
November 18, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29145213/depressed-immune-responses-and-accelerated-splenic-apoptosis-due-to-experience-of-food-deprivation-and-inequality-but-not-unstable-social-status-in-balb-c-mice
#5
Marjan Aghajani, Mohammad Reza Vaez Mahdavi, Mohsen Khalili Najafabadi, Tooba Ghazanfari, Fatemeh Moradi, Ravieh Golchoobian, Hasan Askari, Nima Sanadgol, Ehsan Kazemi Moghaddam
OBJECTIVE(S): We aimed to show that the immune system is sensitive to the detrimental effects of inequality and social injustice, and splenic vulnerability to apoptosis may also increase. METHODS: In order of better determination of immune responses to chronic social stress, we implemented food deprivation, food intake inequality, and unstable social status (a change of cage-mate every 3 days) for a period of 14 days in 60 male Balb/c mice. At the end of this stress period, nitric oxide (NO) production by peritoneal adherent cells and the serum concentration of corticosterone were measured...
November 17, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28810246/gper-agonist-g1-attenuates-neuroinflammation-and-dopaminergic-neurodegeneration-in-parkinson-disease
#6
Jing Guan, Beibei Yang, Yi Fan, Ji Zhang
OBJECTIVE: Epidemiological studies have shown that women of reproductive age have much less possibility of developing Parkinson disease (PD) than men. The beneficial effect of estrogen also has been well-described in both culture and animal models of PD. G protein-coupled estrogen receptor (GPER) is a membrane-associated estrogen receptor, and displayed a neuroprotective role in a mouse model of PD. Since GPER is highly expressed in microglia, we speculate that GPER mediates the neuroprotective function of estradiol through suppressing the neuroinflammation of PD...
August 16, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28793299/the-effects-of-adenosinergic-modulation-on-cytokine-levels-in-a-pentylenetetrazole-induced-generalized-tonic-clonic-seizure-model
#7
Fazilet Dede, Sabriye Karadenizli, Özgür Doğa Özsoy, Fatma Ceyla Eraldemir, Deniz Şahin, Nurbay Ateş
OBJECTIVE: It has been suggested that the adenosinergic system and cytokines play a role in the pathogenesis of epilepsy. Although the role of the adenosinergic system in the modulation of seizure activity is well known, the mechanism of this modulation needs to be described in detail. We performed this study to determine the contribution of the proinflammatory cytokines to the generalized seizure activity during adenosine and caffeine treatment. METHODS: We induced generalized tonic-clonic seizures with the administration of 60 mg/kg pentylenetetrazole (PTZ) in male Wistar Albino rats...
August 10, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28787722/beta-adrenergic-blockade-decreases-the-neuroimmune-changes-in-mice-induced-by-cohabitation-with-an-ehrlich-tumor-bearing-cage-mate
#8
Rafael O Margatho, Cristina de O Massoco, Atilio S Calefi, Daniel S G Cruz, Thaisa M Sandini, Glaucie Jussilane Alves, Jorge C Florio, João Palermo-Neto
OBJECTIVES: Cohabitation with Ehrlich tumor-bearing (ETB) mice induced behavioral, neurochemical, hormonal, and immune effects in the conspecifics as a consequence of stress-induced activation of the sympathetic nervous system (SNS) with catecholamine release. In the current study, the nonspecific β-AR blocker d,l-propranolol and the specific β2-AR blocker ICI-118.551 were employed as pharmacological tools to assess the extent to which catecholamines participated in the effects induced by cohabitation with ETB mice...
August 9, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28618410/deletion-of-the-inflammasome-sensor-aim2-mitigates-a%C3%AE-deposition-and-microglial-activation-but-increases-inflammatory-cytokine-expression-in-an-alzheimer-disease-mouse-model
#9
Pei-Jung Wu, Yun-Fen Hung, Hsin-Yu Liu, Yi-Ping Hsueh
OBJECTIVE: Inflammation is clearly associated with Alzheimer disease (AD). Knockout of Nlrp3, a gene encoding an inflammasome sensor, has been shown to ameliorate AD pathology in a mouse model. Because AIM2 is the most dominant inflammasome sensor expressed in mouse brains, here we investigate whether Aim2 deletion also influences the phenotype of a 5XFAD AD mouse model. METHODS: Quantitative RT-PCR, immunostaining, immunoblotting, and behavioral analyses were applied to compare wild-type, Aim2-/-, 5XFAD, and Aim2-/-;5XFAD mice...
June 16, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28614825/effect-of-ceftiofur-on-hyperalgesia-and-allodynia-in-a-rat-neuropathic-pain-model-the-role-of-immune-processes
#10
Aytül Önal, Deniz Coşkunsever, Fatma Gül Çelenk, Recep Selim Şentürk, Selvi Nalbant, Sibel Ülker Göksel
OBJECTIVE: Inflammatory and immune mechanisms play important roles in the pathogenesis of neuropathic pain. Ceftiofur, a third-generation cephalosporin, has anti-inflammatory effects by inhibiting tumor necrosis factor (TNF)-α, interleukin (IL)-1β, nuclear factor (NF)-κB, and mitogen-activated protein kinase (MAPK) signaling. This study aimed to investigate the effect of ceftiofur on hyperalgesia and allodynia in neuropathic rats and to define the possible contribution of immune mechanisms to this effect...
June 15, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28535535/inflammation-is-an-important-covariate-for-the-crosstalk-of-sleep-and-the-hpa-axis-in-rheumatoid-arthritis
#11
Rainer H Straub, Jaqueline Detert, René Dziurla, Ingo Fietze, Peter-Andreas Loeschmann, Gerd R Burmester, Frank Buttgereit
Rheumatoid arthritis (RA) patients have sleep problems, and inflammation influences sleep. We demonstrated that sleep quality improves during intensified treatment with methotrexate (MTX) or etanercept (ETA). Since the hypothalamic-pituitary-adrenal (HPA) axis is involved in sleep regulation, this study investigated the interrelation between sleep parameters, inflammation as objectified by C-reactive protein (CRP), and serum cortisol and adrenocorticotropic hormone (ACTH) levels. Thirty-one eligible patients (disease activity score, DAS28CRP ≥3...
May 24, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28478458/acute-lipopolysaccharide-switches-the-selection-of-maternal-behavior-to-predatory-behavior-in-female-rats
#12
Tiberiade Mendes-Lima, Thiago Berti Kirsten, Luciano Freitas Felicio, Elizabeth Teodorov, Nicolle Queiroz-Hazarbassanov, Maria Martha Bernardi
OBJECTIVES: A common problem during the postpartum period and during lactation is being affected by infection due to Gram-negative bacteria. In this situation, a sick mother needs to choose between caring for her pups or the need for survival. This study analyzed the effects of lipopolysaccharide (LPS)-induced sickness behavior on selection between maternal behavior (MB) and predatory behavior (PB) in lactating rats. To assess the LPS-induced sickness behavior, the plasma tumor necrosis factor-α (TNF-α) levels were measured...
May 6, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29131114/rosmarinic-acid-attenuates-the-activation-of-murine-microglial-n9-cells-through-the-downregulation-of-inflammatory-cytokines-and-cleaved-caspase-3
#13
Vanessa Rodrigues Coelho, Cassiana Macagnan Viau, Renata Bartolomeu Staub, Marcele Silva De Souza, Pricila Pflüger, Gabriela Gregory Regner, Patrícia Pereira, Jenifer Saffi
OBJECTIVE: The present study evaluated the ability of rosmarinic acid (RA) to inhibit microglia activation induced by lipopolysaccharide (LPS) in the N9 murine microglial cell line, and investigated the putative mechanisms involved in this process. METHODS: In all tests, N9 murine microglial cells were pretreated with RA (0.1, 1.0, and 10 μM) for 20 h and exposed to LPS (1 μM/mL) for 4 h. Cell viability was measured by Trypan blue exclusion assay. Flow cytometry was used to detect reactive oxygen species (ROS), quantify cleaved caspase-3, and analyze the mitochondrial electrochemical potential...
2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29131097/fluoxetine-treatment-in-rats-increases-the-rate-of-taurine-transport-in-mononuclear-cells
#14
María Gabriela Colmenares-Aguilar, Mary Urbina, Francisco Obregón, Fili Fazzino, Lucimey Lima
Fluoxetine, a selective serotonin reuptake inhibitor antidepressant, modulates the mitogen-induced proliferation of lymphocytes. Lymphocytes contain taurine and express taurine transporter (TauT). Among the effects of taurine on lymphocytes are protection against oxidants and regulation of the inflammatory aspects of the immune response. Our aim was to determine the influence of fluoxetine treatment on taurine transport, and to determine the presence of TauT in the mononuclear cells of rats. METHODS: Male adult Sprague-Dawley rats were treated with fluoxetine 10 mg/kg i...
2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29131096/women-serum-concentrations-of-the-il-10-family-of-cytokines-and-ifn-%C3%AE-decrease-from-the-third-trimester-of-pregnancy-to-active-labor
#15
José Javier Reyes-Lagos, Miguel Ángel Peña-Castillo, Juan Carlos Echeverría, Gilberto Pérez-Sánchez, Samantha Álvarez-Herrera, Enrique Becerril-Villanueva, Lenin Pavón, Rodrigo Ayala-Yáñez, Ramón González-Camarena, Gustavo Pacheco-López
Labor is regarded as increased myometrial activity with a regular contractility pattern. At this final stage of pregnancy, myometrial quiescence is lost, accompanied by altered immune homeostasis. It is well known that the interleukin (IL)-10 family of cytokines modulates immunological responses mainly in epithelial cells, including the endometrium. To investigate their inflammatory profile during labor, we performed a longitudinal study in a group of healthy pregnant women (n = 20) with uncomplicated pregnancies in the third trimester of pregnancy and during active labor...
2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29131079/are-inflammatory-cytokines-associated-with-pain-during-acute-myocardial-infarction
#16
Laurin Imholz, Rebecca E Meister-Langraf, Mary Princip, Michaela Fux, Ulrich Schnyder, Jürgen Barth, Hansjörg Znoj, Jean-Paul Schmid, Roland von Känel
OBJECTIVE: Pain and inflammation during acute myocardial infarction (AMI) have been associated with the development of posttraumatic stress disorder and may also impact negatively on somatic outcome. We investigated the relationship between pain during AMI and levels of circulating proinflammatory (tumor necrosis factor [TNF]-α, interleukin [IL]-6) and anti-inflammatory (IL-33 and tissue growth factor [TGF]-β1) cytokines. METHODS: Data were collected as part of the Myocardial Infarction - Stress Prevention Intervention (MI-SPRINT) study...
2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29131016/focal-transplantation-of-aberrant-glial-cells-carrying-the-sod1g93a-mutation-into-rat-spinal-cord-induces-extensive-gliosis
#17
Sofía Ibarburu, Emiliano Trias, Natalia Lago, Hugo Peluffo, Romina Barreto-Núñez, Valentina Varela, Joseph S Beckman, Luis Barbeito
OBJECTIVE: We aimed to determine the potential of aberrant glial cells (AbAs) isolated from the spinal cord of adult SOD1G93A symptomatic rats to induce gliosis and neuronal damage following focal transplantation into the lumbar spinal cord of wild-type rats. METHODS: AbAs were obtained from the spinal cords of SOD1G93A symptomatic rats. One hundred thousand cells were injected using a glass micropipette into the lumbar spinal cords (L3-L5) of syngeneic wild-type adult rats...
2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29084396/depletion-of-cd11c-cells-does-not-influence-outcomes-in-mice-subjected-to-transient-middle-cerebral-artery-occlusion
#18
Peter Kraft, Karolina Scholtyschik, Michael K Schuhmann, Christoph Kleinschnitz
OBJECTIVE: While it has been shown that different T-cell subsets have a detrimental role in the acute phase of ischemic stroke, data on the impact of dendritic cells (DC) are missing. Classic DC can be characterized by the cluster of differentiation (CD)11c surface antigen. METHODS: In this study, we depleted CD11c+ cells by using a CD11c-diphtheria toxin (DTX) receptor mouse strain that allows selective depletion of CD11c+ cells by DTX injection. For stroke induction, we used the model of transient middle cerebral artery occlusion (tMCAO) and analyzed stroke volume and functional outcome on days 1 and 3 as well as expression of prototypical pro- and anti-inflammatory cytokines on day 1 after tMCAO...
2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28934729/the-effect-of-perceived-stress-on-epstein-barr-virus-antibody-titers-in-appalachian-ohio-women
#19
Melissa J Brook, Lisa M Christian, Erinn M Hade, Mack T Ruffin
OBJECTIVE: The Appalachian population suffers a disparate burden of chronic stress leading to high perceived stress. The study aim was to determine the association between perceived stress and Epstein-Barr virus (EBV) antibody titers, along with the impact of perceived social support, Appalachian self-identify, and health behaviors. METHODS: Serum EBV VCA-IgG antibody titer levels from 169 female Appalachian residents (aged 18-26 years) were examined. Perceived stress, perceived social support, Appalachian self-identity, and health behaviors were assessed via self-administered questionnaires...
2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28922662/treatment-of-autoimmune-glial-fibrillary-acidic-protein-astrocytopathy-follow-up-in-7-cases
#20
Xinguang Yang, Junyan Liang, Qingmei Huang, Huiming Xu, Cong Gao, Youming Long, Xiaoyu Xiao
OBJECTIVE: The aim of this work was to report an autoimmune glial fibrillary acidic protein (GFAP) astrocytopathy with long-term follow-up in 7 patients. METHODS: Antibodies were detected by indirect immunofluorescence assay and patient data were analyzed retrospectively. RESULTS: Seven patients (4 female, 3 male) with ≥1 year follow-up were included. All patients had positive GFAP antibodies in their cerebral spinal fluid (CSF). Their median age at disease onset was 56 years (range 27-69) and the median disease duration was 1 year (range 1-4)...
2017: Neuroimmunomodulation
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