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https://www.readbyqxmd.com/read/28241498/sphingosine-1-phosphate-receptor-1-signaling-in-mammalian-cells
#1
REVIEW
Nigel J Pyne, Susan Pyne
The bioactive lipid, sphingosine 1-phosphate (S1P) binds to a family of G protein-coupled receptors, termed S1P₁-S1P₅. These receptors function in, for example, the cardiovascular system to regulate vascular barrier integrity and tone, the nervous system to regulate neuronal differentiation, myelination and oligodendrocyte/glial cell survival and the immune system to regulate T- and B-cell subsets and trafficking. S1P receptors also participate in the pathophysiology of autoimmunity, inflammatory disease, cancer, neurodegeneration and others...
February 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28241480/pro-resolving-molecules-new-approaches-to-treat-sepsis
#2
REVIEW
Christa Buechler, Rebekka Pohl, Charalampos Aslanidis
Inflammation is a complex response of the body to exogenous and endogenous insults. Chronic and systemic diseases are attributed to uncontrolled inflammation. Molecules involved in the initiation of inflammation are very well studied while pathways regulating its resolution are insufficiently investigated. Approaches to down-modulate mediators relevant for the onset and duration of inflammation are successful in some chronic diseases, while all of them have failed in sepsis patients. Inflammation and immune suppression characterize sepsis, indicating that anti-inflammatory strategies alone are inappropriate for its therapy...
February 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28241418/the-effect-of-simulated-flash-heat-pasteurization-on-immune-components-of-human-milk
#3
Brodie Daniels, Stefan Schmidt, Tracy King, Kiersten Israel-Ballard, Kimberly Amundson Mansen, Anna Coutsoudis
A pasteurization temperature monitoring system has been designed using FoneAstra, a cellphone-based networked sensing system, to monitor simulated flash-heat (FH) pasteurization. This study compared the effect of the FoneAstra FH (F-FH) method with the Sterifeed Holder method currently used by human milk banks on human milk immune components (immunoglobulin A (IgA), lactoferrin activity, lysozyme activity, interleukin (IL)-8 and IL-10). Donor milk samples (N = 50) were obtained from a human milk bank, and pasteurized...
February 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28241080/replication-of-cmv-in-the-gut-of-hiv-infected-individuals-and-epithelial-barrier-dysfunction
#4
Ekaterina Maidji, Ma Somsouk, Jose M Rivera, Peter W Hunt, Cheryl A Stoddart
Although invasive cytomegalovirus (CMV) disease is uncommon in the era of antiretroviral therapy (ART), asymptomatic CMV coinfection is nearly ubiquitous in HIV infected individuals. While microbial translocation and gut epithelial barrier dysfunction may promote persistent immune activation in treated HIV infection, potentially contributing to morbidity and mortality, it has been unclear whether CMV replication in individuals with no symptoms of CMV disease might play a role in this process. We hypothesized that persistent CMV replication in the intestinal epithelium of HIV/CMV-coinfected individuals impairs gut epithelial barrier function...
February 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28240891/approach-for-pesticide-residue-analysis-for-metabolite-prothioconazole-desthio-in-animal-origin-food
#5
Hui Liu, Guojun Yao, Xueke Liu, Chang Liu, Jing Zhan, Donghui Liu, Peng Wang, Zhiqiang Zhou
The food safety problems such as the damage to immune system, nervous and endocrine leading to cancer and malformations has received people's increasing attention. In order to achieve the MRLs, the most discussed method of HPLC-MS/MS is widely used with a advantage of high precision and resolution. Prothioconazole is a broad-spectrum thiocarbamate fungicide. It can rapidly metabolize to prothioconazole-desthio in different matrix. Rapid and effective methods for the determination of prothioconazole-desthio in five kinds of different animal food were developed...
February 27, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28240764/allergic-rhinitis-and-cxcr3-chemokines
#6
V Mazzi, P Fallahi
The underlying mechanism of allergic rhinitis involves IgE antibodies attaching to the allergen and causing the release of inflammatory chemicals such as histamine from mast cells. Cytokines are very important in this process. Many data suggest a systemic shift to more intensely type 1-dominated immune responses in non-allergic individuals and, conversely, to more type 2-dominated responses in allergic individuals upon natural re-exposure to grass pollen. However other studies have found that chemokine (C-X-C motif) ligand (CXCL)10/ interferon (IFN)-γ-induced protein 10 (IP-10) and CXCL9/monokine induced by IFN-γ (MIG) concentrations are elevated in nasal lavages from allergic patients suggesting that these chemokines may play a role in chronic allergic inflammation...
January 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28240310/interleukin-27-enhances-the-potential-of-reactive-oxygen-species-generation-from-monocyte-derived-macrophages-and-dendritic-cells-by-induction-of-p47-phox
#7
Bharatwaj Sowrirajan, Yoshiro Saito, Deepak Poudyal, Qian Chen, Hongyan Sui, Suk See DeRavin, Hiromi Imamichi, Toyotaka Sato, Douglas B Kuhns, Noriko Noguchi, Harry L Malech, H Clifford Lane, Tomozumi Imamichi
Interleukin (IL)-27, a member of the IL-12 cytokine family, plays an important and diverse role in the function of the immune system. We have previously demonstrated that IL-27 is an anti-viral cytokine which inhibits HIV-1, HIV-2, Influenza virus and herpes simplex virus infection, and enhances the potential of reactive oxygen species (ROS) generating activity during differentiation of monocytes to macrophages. In this study, we further investigated the mechanism of the enhanced potential for ROS generation by IL-27...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28240208/-autoimmune-disease-predisposition-aire-%C3%A2-%C3%A2-protects%C3%A2-%C3%A2-men
#8
Nadine Dragin, Rozen Le Panse, Sonia Berrih-Aknin
Autoimmune diseases are a group of about 80 different diseases affecting 5-8% of the population. They are due to a deregulation of the immune system that attacks specific molecules and/or cells in the body. The thymus is the school of T cells that must be able to react to foreign molecules penetrating into the body. This education process is mediated by interactions between T cells and thymic epithelial cells (TEC) that express specific proteins of the peripheral tissues (TSA, "tissue-specific antigen"). This complex mechanism is called central tolerance...
February 2017: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28240188/parkinson-s-disease-is-accompanied-by-intertwined-alterations-in-iron-metabolism-and-activated-immune-inflammatory-and-oxidative-stress-pathways
#9
Michael Maes, Carine Coneglian De Farias, Kamila Landucci Bonifácio, Andressa Keiko Matsumoto, Chiara Cristina Bortolasci, André de Souza Nogueira, Francis Fregonesi Brinholi, Helena Kaminami Morimoto, Lucio Baena de Melo, Estefânia Gastaldello Moreira, Décio Sabbatini Barbosa
BACKGROUND: Parkinson's diasease (PD) is a neurodegenerative disorder characterized by a complex interplay between peripheral and central inflammatory and oxidative stress pathways. OBJECTIVE: To investigate immune-inflammatory and oxidative stress pathways in relation to iron metabolism in peripheral blood of PD patients and healthy controls. METHODS: We recruited 56 healthy individuals and 56 PD patients in stages 1-3 of Hoehn and Yahr Scale...
February 23, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28240164/effects-of-dietary-mycotoxins-on-gut-microbiome
#10
Kexin Du, Ping Liu, Yuan Li, Xi Ma
The harmful effects of mycotoxins on intestinal health have received worldwide attention. Mycotoxins are toxic secondary metabolites produced by filamentous fungi, and include aflatoxins, ochratoxins, patulin, fumonisins, zearalenone, trichothecenes, and ergot alkaloids. Insuring the absence or low levels of mycotoxins is critical for food and feed safety. Currently, the studies in this field have illuminated the adverse effects of mycotoxins on gut health including intestinal integrity and the gut-associated immune system...
February 22, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28240160/dietary-additive-probiotics-modulation-of-the-intestinal-microbiota
#11
Shenglan Hu, Li Wang, Zongyong Jiang
The importance of the intestinal microbiota of animals is widely acknowledged because of its vital role in the health of animals. There are complex communities of microbiota, which colonize the gastrointestinal tract. Intestinal microbiota are conductive to animal health and the development of the host immune system. Probiotics are commonly used dietary additives where they provide the host with many beneficial functions, such as modulating intestinal homeostasis and promoting gut health. These beneficial effects of probiotics may accrue from the inhibiting the growth of pathogenic bacteria and promoting the growth of beneficial flora in the gastrointestinal tract...
February 23, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28239963/characterization-of-complex-heterogeneous-lipid-a-samples-using-hplc-ms-ms-technique-ii-structural-elucidation-of-non-phosphorylated-lipid-a-by-negative-ion-mode-tandem-mass-spectrometry
#12
Viktor Sándor, Anikó Kilár, Ferenc Kilár, Béla Kocsis, Ágnes Dörnyei
Non-phosphorylated lipid A species confer reduced inflammatory potential for the bacteria. Knowledge on their chemical structure and presence in bacterial pathogens may contribute to the understanding of bacterial resistance and activation of the host innate immune system. In this study, we report the fragmentation pathways of negatively charged, non-phosphorylated lipid A species under low-energy collision-induced dissociation conditions of an electrospray ionization quadrupole time-of-flight instrument. Charge-promoted consecutive and competitive eliminations of the acyl chains and cross-ring cleavages of the sugar residues were observed...
August 2016: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28239813/ucp2-in-early-diagnosis-and-prognosis-of-sepsis
#13
Z-M Jiang, Q-H Yang, C-Q Zhu
OBJECTIVE: Sepsis, a systemic inflammatory response syndrome caused by infection, is a serious threat to the lives of patients. Sepsis can cause tissue hypoperfusion and septic shock which leads to organ dysfunction and death via a variety of mechanisms. Mitochondrial protein (UCP2) involves in immune response, regulation of oxidative stress, and maintenance of mitochondrial membrane potential as well as energy production. However, the role of UCP2 in sepsis remains to be further explored...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28239677/the-discontinuity-theory-of-immunity
#14
Thomas Pradeu, Eric Vivier
Some biological systems detect the rate of change in a stimulus rather than the stimulus itself only. We suggest that the immune system works in this way. According to the discontinuity theory of immunity, the immune system responds to sudden changes in antigenic stimulation and is rendered tolerant by slow or continuous stimulation. This basic principle, which is supported by recent data on immune checkpoints in viral infections, cancers, and allergies, can be seen as a unifying framework for diverse immune responses...
July 14, 2016: Science Immunology
https://www.readbyqxmd.com/read/28239665/myeloid-12-15-lox-regulates-b-cell-numbers-and-innate-immune-antibody-levels-in-vivo
#15
Sarah N Lauder, Victoria J Tyrrell, Keith Allen-Redpath, Maceler Aldrovandi, David Gray, Peter Collins, Simon A Jones, Philip R Taylor, Valerie O'Donnell
Background. The myeloid enzyme 12/15-lipoxygenase (LOX), which generates bioactive oxidized lipids, has been implicated in numerous inflammatory diseases, with several studies demonstrating an improvement in pathology in mice lacking the enzyme. However, the ability of 12/15-LOX to directly regulate B cell function has not been studied. Methods. The influence of 12/15-LOX on B cell phenotype and function, and IgM generation, was compared using wildtype (WT) and 12/15-LOX (Alox15(-/-)) deficient mice. The proliferative and functional capacity of splenic CD19(+) B cells was measured in vitro in response to various toll-like receptor agonists...
January 4, 2017: Wellcome Open Res
https://www.readbyqxmd.com/read/28239658/loss-of-immune-homeostasis-dictates-shiv-rebound-after-stem-cell-transplantation
#16
Christopher W Peterson, Clarisse Benne, Patricia Polacino, Jasbir Kaur, Cristina E McAllister, Abdelali Filali-Mouhim, Willi Obenza, Tiffany A Pecor, Meei-Li Huang, Audrey Baldessari, Robert D Murnane, Ann E Woolfrey, Keith R Jerome, Shiu-Lok Hu, Nichole R Klatt, Stephen DeRosa, Rafick P Sékaly, Hans-Peter Kiem
The conditioning regimen used as part of the Berlin patient's hematopoietic cell transplant likely contributed to his eradication of HIV infection. We studied the impact of conditioning in simian-human immunodeficiency virus-infected (SHIV-infected) macaques suppressed by combination antiretroviral therapy (cART). The conditioning regimen resulted in a dramatic, but incomplete depletion of CD4(+) and CD8(+) T cells and CD20(+) B cells, increased T cell activation and exhaustion, and a significant loss of SHIV-specific Abs...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28239656/autoreactive-helper-t-cells-alleviate-the-need-for-intrinsic-tlr-signaling-in-autoreactive-b-cell-activation
#17
Josephine R Giles, Adriana Turqueti Neves, Ann Marshak-Rothstein, Mark J Shlomchik
T cells play a significant role in the pathogenesis of systemic autoimmune diseases, including systemic lupus erythematosus; however, there is relatively little information on the nature and specificity of autoreactive T cells. Identifying such cells has been technically difficult because they are likely to be rare and low affinity. Here, we report a method for identifying autoreactive T cell clones that recognize proteins contained in autoantibody immune complexes, providing direct evidence that functional autoreactive helper T cells exist in the periphery of normal mice...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28239647/enhanced-fcgr2a-and-fcgr3a-signaling-by-hiv-viremic-controller-igg
#18
Raymond A Alvarez, Ana M Maestre, Kenneth Law, Natasha D Durham, Maria Ines Barria, Akiko Ishii-Watabe, Minoru Tada, Manav Kapoor, Mathew T Hotta, Gabriela Rodriguez-Caprio, Daniel S Fierer, Ana Fernandez-Sesma, Viviana Simon, Benjamin K Chen
HIV-1 viremic controllers (VC) spontaneously control infection without antiretroviral treatment. Several studies indicate that IgG Abs from VCs induce enhanced responses from immune effector cells. Since signaling through Fc-γ receptors (FCGRs) modulate these Ab-driven responses, here we examine if enhanced FCGR activation is a common feature of IgG from VCs. Using an infected cell-based system, we observed that VC IgG stimulated greater FCGR2A and FCGR3A activation as compared with noncontrollers, independent of the magnitude of HIV-specific Ab binding or virus neutralization activities...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28239634/dataset-for-an-analysis-of-communicative-aspects-of-finance
#19
Natalya Zavyalova
The article describes a step-by-step strategy for designing a universal comprehensive vision of a vast majority of financial research topics. The strategy is focused around the analysis of the retrieval results of the word processing system Serelex which is based on the semantic similarity measure. While designing a research topic, scientists usually employ their individual background. They rely in most cases on their individual assumptions and hypotheses. The strategy, introduced in the article, highlights the method of identifying components of semantic maps which can lead to a better coverage of any scientific topic under analysis...
April 2017: Data in Brief
https://www.readbyqxmd.com/read/28239633/dataset-of-proinflammatory-cytokine-and-cytokine-receptor-gene-expression-in-rainbow-trout-oncorhynchus-mykiss-measured-using-a-novel-gexp-multiplex-rt-pcr-assay
#20
Ivan Kutyrev, Beth Cleveland, Timothy Leeds, Gregory D Wiens
A GeXP multiplex, RT-PCR assay was developed and optimized that simultaneously measures expression of a suite of immune-relevant genes in rainbow trout (Oncorhynchus mykiss), concentrating on tumor necrosis factor and interleukin-1 ligand/receptor systems and acute phase response genes. The dataset includes expression values for drpt, il11a, il1b1, il1b2, il1b3, il1r-like-1(e3-5), il1r-like-1(e9-11), il1r1-like-a, il1r1-like-b, il1r2, saa, tnfa1, tnfa2, tnfa3, tnfrsf1a, tnfrsf1a-like-a, tnfrsf1a-like-b, tnfrsf5, and tnfrsf9...
April 2017: Data in Brief
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