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https://www.readbyqxmd.com/read/28421250/erratum-to-cx3cr1-deficiency-accelerates-the-development-of-retinopathy-in-a-rodent-model-of-type-1-diabetes
#1
Eleni Beli, James M Dominguez, Ping Hu, Jeffrey S Thinschmidt, Sergio Caballero, Sergio Li Calzi, Defang Luo, Sumathi Shanmugam, Tatiana E Salazar, Yaqian Duan, Michael E Boulton, Susanna Mohr, Steven F Abcouwer, Daniel R Saban, Jeffrey K Harrison, Maria B Grant
No abstract text is available yet for this article.
April 18, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28407008/dysregulated-signaling-proliferation-and-apoptosis-impact-on-the-pathogenesis-of-tcr%C3%AE-%C3%AE-t-cell-large-granular-lymphocyte-leukemia
#2
Martine J Kallemeijn, Dick de Ridder, Joyce Schilperoord-Vermeulen, Michèle Y van der Klift, Yorick Sandberg, Jacques J M van Dongen, Anton W Langerak
TCRγδ+ T-LGL leukemia is a rare form of chronic mature T cell disorders in elderly, which is generally characterized by a persistently enlarged CD3+CD57+TCRγδ+ large granular lymphocyte population in the peripheral blood with a monoclonal phenotype. Clinically, the disease is heterogeneous, most patients being largely asymptomatic, although neutropenia, fatigue and B symptoms and underlying diseases such as autoimmune diseases or malignancies are also often observed. The etiology of TCRγδ+ T-LGL proliferations is largely unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28405903/stress-induced-alterations-of-immune-profile-in-animals-suffering-by-tau-protein-driven-neurodegeneration
#3
Petr Novak, Martin Cente, Nina Kosikova, Tomas Augustin, Richard Kvetnansky, Michal Novak, Peter Filipcik
Alzheimer's disease (AD) is a multifactorial disorder; neurofibrillary pathology composed of tau protein is found side by side with amyloid-β deposits and extensive neuroinflammation. The immune system of the brain is considered as one of the factors that could influence the speed of the progression of AD neuropathology as a potential mediator of the damage induced by AD protein deposits. Alzheimer's disease pathology can be impacted by psychological stress; however, signalling pathways in background are not well known...
April 12, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28398520/injury-leads-to-the-appearance-of-cells-with-characteristics-of-both-microglia-and-astrocytes-in-mouse-and-human-brain
#4
Ulrika Wilhelmsson, Daniel Andersson, Yolanda de Pablo, Roy Pekny, Anders Ståhlberg, Jan Mulder, Nicholas Mitsios, Tibor Hortobágyi, Milos Pekny, Marcela Pekna
Microglia and astrocytes have been considered until now as cells with very distinct identities. Here, we assessed the heterogeneity within microglia/monocyte cell population in mouse hippocampus and determined their response to injury, by using single-cell gene expression profiling of cells isolated from uninjured and deafferented hippocampus. We found that in individual cells, microglial markers Cx3cr1, Aif1, Itgam, and Cd68 were co-expressed. Interestingly, injury led to the co-expression of the astrocyte marker Gfap in a subpopulation of Cx3cr1-expressing cells from both the injured and contralesional hippocampus...
April 7, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28392788/the-transcription-factor-hobit-identifies-human-cytotoxic-cd4-t-cells
#5
Anna E Oja, Felipe A Vieira Braga, Ester B M Remmerswaal, Natasja A M Kragten, Kirsten M L Hertoghs, Jianmin Zuo, Paul A Moss, René A W van Lier, Klaas P J M van Gisbergen, Pleun Hombrink
The T cell lineage is commonly divided into CD4-expressing helper T cells that polarize immune responses through cytokine secretion and CD8-expressing cytotoxic T cells that eliminate infected target cells by virtue of the release of cytotoxic molecules. Recently, a population of CD4(+) T cells that conforms to the phenotype of cytotoxic CD8(+) T cells has received increased recognition. These cytotoxic CD4(+) T cells display constitutive expression of granzyme B and perforin at the protein level and mediate HLA class II-dependent killing of target cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28389721/chemokines-in-neuron-glial-cell-interaction-and-pathogenesis-of-neuropathic-pain
#6
REVIEW
Zhi-Jun Zhang, Bao-Chun Jiang, Yong-Jing Gao
Neuropathic pain resulting from damage or dysfunction of the nervous system is a highly debilitating chronic pain state and is often resistant to currently available treatments. It has become clear that neuroinflammation, mainly mediated by proinflammatory cytokines and chemokines, plays an important role in the establishment and maintenance of neuropathic pain. Chemokines were originally identified as regulators of peripheral immune cell trafficking and were also expressed in neurons and glial cells in the central nervous system...
April 7, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28388927/exposure-to-gestational-diabetes-mellitus-induces-neuroinflammation-derangement-of-hippocampal-neurons-and-cognitive-changes-in-rat-offspring
#7
Billy Vuong, Gary Odero, Stephanie Rozbacher, Mackenzie Stevenson, Stephanie M Kereliuk, Troy J Pereira, Vernon W Dolinsky, Tiina M Kauppinen
BACKGROUND: Birth cohort studies link gestational diabetes mellitus (GDM) with impaired cognitive performance in the offspring. However, the mechanisms involved are unknown. We tested the hypothesis that obesity-associated GDM induces chronic neuroinflammation and disturbs the development of neuronal circuitry resulting in impaired cognitive abilities in the offspring. METHODS: In rats, GDM was induced by feeding dams a diet high in sucrose and fatty acids. Brains of neonatal (E20) and young adult (15-week-old) offspring of GDM and lean dams were analyzed by immunohistochemistry, cytokine assay, and western blotting...
April 7, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28387445/stimulation-of-oral-fibroblast-chemokine-receptors-identifies-ccr3-and-ccr4-as-potential-wound-healing-targets
#8
Jeroen Kees Buskermolen, Sanne Roffel, Susan Gibbs
The focus of this study was to determine which chemokine receptors are present on oral fibroblasts and whether these receptors influence proliferation, migration and/or the release of wound healing mediators. This information may provide insight into the superior wound healing characteristics of the oral mucosa. The gingiva fibroblasts expressed 12 different chemokine receptors (CCR3, CCR4, CCR6, CCR9, CCR10, CXCR1, CXCR2, CXCR4, CXCR5, CXCR7, CX3CR1 and XCR1), as analyzed by flow cytometry. Fourteen corresponding chemokines (CCL5, CCL15, CCL20, CCL22, CCL25, CCL27, CCL28, CXCL1, CXCL8, CXCL11, CXCL12, CXCL13, CX3CL1 and XCL1) were used to study the activation of these receptors on gingiva fibroblasts...
April 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28386350/change-in-gut-microbiota-is-correlated-with-alterations-in-the-surface-molecule-expression-of-monocytes-after-roux-en-y-gastric-bypass-surgery-in-obese-type-2-diabetic-patients
#9
Hui Chen, Lei Qian, Qiangsheng Lv, Jianxiu Yu, Wei Wu, Haixin Qian
Objectives: Persistent low-grade chronic inflammation is common in type 2 diabetes (T2D) and obesity. To date, the underlying molecular mechanism is not well understood. In this study, we aimed to investigate gut microbiota and the expression of monocyte surface molecules in obese T2D subjects who underwent Roux-en-Y gastric bypass (RYGB) surgery. Methods: Twenty-four T2D patients were enrolled. Gut microbiota was assessed by measuring bacterial DNA. The phenotypes and biological functions of monocytes, and the expression of monocyte surface molecules were examined by flow cytometry...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28355562/th1-differentiation-drives-the-accumulation-of-intravascular-non-protective-cd4%C3%A2-t-cells-during-tuberculosis
#10
Michelle A Sallin, Shunsuke Sakai, Keith D Kauffman, Howard A Young, Jinfang Zhu, Daniel L Barber
Recent data indicate that the differentiation state of Th1 cells determines their protective capacity against tuberculosis. Therefore, we examined the role of Th1-polarizing factors in the generation of protective and non-protective subsets of Mtb-specific Th1 cells. We find that IL-12/23p40 promotes Th1 cell expansion and maturation beyond the CD73(+)CXCR3(+)T-bet(dim) stage, and T-bet prevents deviation of Th1 cells into Th17 cells. Nevertheless, IL- 12/23p40 and T-bet are also essential for the production of a prominent subset of intravascular CX3CR1(+)KLRG1(+) Th1 cells that persists poorly and can neither migrate into the lung parenchyma nor control Mtb growth...
March 28, 2017: Cell Reports
https://www.readbyqxmd.com/read/28343297/association-of-the-cx3cr1-v249i-variant-with-neurofibrillary-pathology-progression-in-late-onset-alzheimer-s-disease
#11
Alan López-López, Ellen Gelpi, Diana Maria Lopategui, Jose M Vidal-Taboada
Neuroinflammation and microglial dysfunction have a prominent role in the pathogenesis of late-onset Alzheimer's disease (LOAD). CX3CR1 is a microglia-specific gene involved in microglia-neuron crosstalk and neuroinflammation. Numerous evidence show the involvement of CX3CR1 in AD. The aim of this study was to investigate if some functional genetic variants of this gene could influence on LOAD's outcome, in a neuropathologically confirmed Spanish cohort. We designed an open, pragmatic, case-control retrospective study including a total of 475 subjects (205 pathologically confirmed AD cases and 270 controls)...
March 25, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28342179/common-polymorphisms-of-cx3cr1-gene-modify-als-outcome-a-population-based-study
#12
Andrea Calvo, Cristina Moglia, Antonio Canosa, Stefania Cammarosano, Antonio Ilardi, Davide Bertuzzo, Bryan J Traynor, Maura Brunetti, Marco Barberis, Gabriele Mora, Federico Casale, Adriano Chiò
INTRODUCTION: In the brain the CX3CR1 gene is only expressed by microglia where it acts as a key mediator of the neuron-microglia interactions. We assessed whether the two common polymorphisms of the CX3CR1 gene (V249I and T280M) modify amyotrophic lateral sclerosis (ALS) phenotype. METHODS: The study included 755 ALS patients diagnosed in Piemonte between 2007 and 2012 and 369 age- and gender-matched controls, all genotyped using the same chips. RESULTS: Neither of the variants were associated with an increased risk of ALS...
March 25, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28338007/human-immunodeficiency-virus-type-1-myeloid-derived-suppressor-cells-inhibit-cytomegalovirus-inflammation-through-interleukin-27-and-b7-h4
#13
Ankita Garg, Rodney Trout, Stephen A Spector
HIV/CMV co-infected persons despite prolonged viral suppression often experience persistent immune activation, have an increased frequency of myeloid derived suppressor cells (MDSC) and are at increased risk for cardiovascular disease. We examined how HIV MDSC control CD4(+) T cell IFNγ response to a CMVpp65 peptide pool (CMVpp65). We show that HIV/CMV co-infected persons with virologic suppression and recovered CD4(+) T cells compared to HIV(-)/CMV(+) controls exhibit an increase in CD4(+)CX3CR1(+)IFNγ(+) cells in response to CMVpp65; MDSC depletion further augmented CD4(+)CX3CR1(+)IFNγ(+) cells and IFNγ production...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28322863/deep-immune-profiling-by-mass-cytometry-links-human-t-and-nk-cell-differentiation-and-cytotoxic-molecule-expression-patterns
#14
Bertram Bengsch, Takuya Ohtani, Ramin Sedaghat Herati, Niels Bovenschen, Kyong-Mi Chang, E John Wherry
The elimination of infected or tumor cells by direct lysis is a key T and NK cell effector function. T and NK cells can kill target cells by coordinated secretion of cytotoxic granules containing one or both pore-forming proteins, perforin and granulysin and combinations of granzyme (Gzm) family effector proteases (in humans: Gzm A, B, K, M and H). Understanding the pattern of expression of cytotoxic molecules and the relationship to different states of T and NK cells may have direct relevance for immune responses in autoimmunity, infectious disease and cancer...
March 17, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28320442/analysis-of-monocyte-infiltration-in-mptp-mice-reveals-that-microglial-cx3cr1-protects-against-neurotoxic-over-induction-of-monocyte-attracting-ccl2-by-astrocytes
#15
Vincent R Parillaud, Guillaume Lornet, Yann Monnet, Anne-Laure Privat, Andrei T Haddad, Vanessa Brochard, Amaury Bekaert, Camille Baudesson de Chanville, Etienne C Hirsch, Christophe Combadière, Stéphane Hunot, Christian S Lobsiger
BACKGROUND: Evidence from mice suggests that brain infiltrating immune cells contribute to neurodegeneration, and we previously identified a deleterious lymphocyte infiltration in Parkinson's disease mice. However, this remains controversial for monocytes, due to artifact-prone techniques used to distinguish them from microglia. Our aim was to reassess this open question, by taking advantage of the recent recognition that chemokine receptors CCR2 and CX3CR1 can differentiate between inflammatory monocytes and microglia, enabling to test whether CCR2(+) monocytes infiltrate the brain during dopaminergic (DA) neurodegeneration and whether they contribute to neuronal death...
March 21, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28315475/evolution-of-the-ability-to-modulate-host-chemokine-networks-via-gene-duplication-in-human-cytomegalovirus-hcmv
#16
Jessica A Scarborough, John R Paul, Juliet V Spencer
Human cytomegalovirus (HCMV) is a widespread pathogen that is particularly skillful at evading immune detection and defense mechanisms, largely due to extensive co-evolution with its host. One aspect of this co-evolution involves the acquisition of virally encoded G protein-coupled receptors (GPCRs) with homology to the chemokine receptor family. GPCRs are the largest family of cell surface proteins, found in organisms from yeast to humans, and they regulate a variety of cellular processes including development, sensory perception, and immune cell trafficking...
March 14, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28302649/endothelial-protective-monocyte-patrolling-in-large-arteries-intensified-by-western-diet-and-atherosclerosis
#17
Amado Quintar, Sara McArdle, Dennis Wolf, Alex Marki, Erik Ehinger, Melanie Vassallo, Jacqueline F Miller, Zbigniew Mikulski, Klaus Ley, Konrad Buscher
Rationale: Non-classical mouse monocyte (CX3CR1(high), Ly-6C(low)) patrolling along the vessels of the microcirculation is critical for endothelial homeostasis and inflammation. Due to technical challenges it is currently not established how patrolling occurs in large arteries. Objective: This study was undertaken to elucidate the molecular, migratory and functional phenotype of patrolling monocytes in the high shear and pulsatile environment of large arteries in healthy, hyperlipidemic and atherosclerotic conditions...
March 16, 2017: Circulation Research
https://www.readbyqxmd.com/read/28282403/chemokine-binding-protein-m3-limits-atherosclerosis-in-apolipoprotein-e-mice
#18
Dhanya Ravindran, Anisyah Ridiandries, Laura Z Vanags, Rodney Henriquez, Siân Cartland, Joanne T M Tan, Christina A Bursill
Chemokines are important in macrophage recruitment and the progression of atherosclerosis. The 'M3' chemokine binding protein inactivates key chemokines involved in atherosclerosis (e.g. CCL2, CCL5 and CX3CL1). We aimed to determine the effect of M3 on plaque development and composition. In vitro chemotaxis studies confirmed that M3 protein inhibited the activity of chemokines CCL2, CCL5 and CX3CL1 as primary human monocyte migration as well as CCR2-, CCR5- and CX3CR1-directed migration was attenuated by M3...
2017: PloS One
https://www.readbyqxmd.com/read/28275196/mutating-the-cx3c-motif-in-the-g-protein-should-make-a-live-respiratory-syncytial-virus-vaccine-safer-and-more-effective
#19
S Boyoglu-Barnum, S O Todd, J Meng, T R Barnum, T Chirkova, L M Haynes, S J Jadhao, R A Tripp, A G Oomens, M L Moore, L J Anderson
Respiratory syncytial virus (RSV) belongs to the family Paramyxoviridae and is the single most important cause of serious lower respiratory tract infections in young children, yet no highly effective treatment or vaccine is available. Through a CX3C chemokine motif ((182)CWAIC(186)) in the G protein, RSV binds to the corresponding chemokine receptor, CX3CR1. Since RSV binding to CX3CR1 contributes to disease pathogenesis, we investigated whether a mutation in the CX3C motif by insertion of an alanine A(186) within the CX3C motif to CX4C ((182)CWAIAC(187)), known to block binding to CX3CR1, might decrease disease...
March 8, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28267793/the-drf-motif-of-cxcr6-as-chemokine-receptor-adaptation-to-adhesion
#20
Andrea Koenen, Aaron Babendreyer, Julian Schumacher, Tobias Pasqualon, Nicole Schwarz, Anke Seifert, Xavier Deupi, Andreas Ludwig, Daniela Dreymueller
The CXC-chemokine receptor 6 (CXCR6) is a class A GTP-binding protein-coupled receptor (GPCRs) that mediates adhesion of leukocytes by interacting with the transmembrane cell surface-expressed chemokine ligand 16 (CXCL16), and also regulates leukocyte migration by interacting with the soluble shed variant of CXCL16. In contrast to virtually all other chemokine receptors with chemotactic activity, CXCR6 carries a DRF motif instead of the typical DRY motif as a key element in receptor activation and G protein coupling...
2017: PloS One
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