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https://www.readbyqxmd.com/read/28916360/trancriptome-profiles-of-amur-sturgeon-spleen-in-response-to-yersinia-ruckeri-infection
#1
Shaowu Li, Ying Zhang, Yongsheng Cao, Di Wang, Hongbai Liu, Tongyan Lu
Yersinia ruckeri (YR) is the causative agent of yersiniosis which has caused significant economic losses in fish culture worldwide, including in Amur sturgeon (Acipenser schrenckii) culture. To better understand the mechanism of the immune responses to YR in Amur sturgeon, the transcriptomic profiles of the spleens from YR-infected and non-infected groups were obtained using RNA-seq techniques. The de novo assemblies yielded totally 145 670 unigenes from the two libraries. The total numbers of transcripts in YR-infected and non-infected groups were from 110 893 to 147 336, with the mean length varying from 560 to 631 (N50: from 882 to 1083)...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28915449/increased-expression-of-nlrp3-inflammasome-in-placentas-from-pregnant-women-with-severe-preeclampsia
#2
Ingrid C Weel, Mariana Romão-Veiga, Mariana L Matias, Eduardo G Fioratti, Jose C Peraçoli, Vera T Borges, João P Araujo, Maria T Peraçoli
Preeclampsia is a pregnancy disorder characterized by imbalance between pro- and anti-inflammatory cytokines associated with high plasma levels of uric acid and Interleukin-1 beta (IL-1β). The inflammasome is a protein complex that mediates innate immune responses via caspase-1 activation promoting secretion of IL-1β and IL-18 in their active forms, and also release of the high-mobility group box 1 protein (HMGB1). As the placenta seems to play an important role in the pathogenesis of PE, the present study investigated the expression of genes and proteins related to the inflammasome in placentas from pregnant women with severe preeclampsia...
September 6, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28912259/nod2-nucleotide-binding-oligomerization-domain-2-is-a-major-pathogenic-mediator-of-coxsackievirus-b3-induced-myocarditis
#3
Carsten Tschöpe, Irene Müller, Yu Xia, Konstantinos Savvatis, Kathleen Pappritz, Sandra Pinkert, Dirk Lassner, Markus M Heimesaat, Frank Spillmann, Kapka Miteva, Stefan Bereswill, Heinz-Peter Schultheiss, Henry Fechner, Burkert Pieske, Uwe Kühl, Sophie Van Linthout
BACKGROUND: The cytoplasmatic pattern recognition receptor, NOD2 (nucleotide-binding oligomerization domain 2), belongs to the innate immune system and is among others responsible for the recognition of single-stranded RNA. With Coxsackievirus B3 (CVB3) being a single-stranded RNA virus, and the recent evidence that the NOD2 target, NLRP3 (NOD-like receptor family, pyrin domain containing 3) is of importance in the pathogenesis of CVB3-induced myocarditis, we aimed to unravel the role of NOD2 in CVB3-induced myocarditis...
September 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28906208/pattern-recognition-receptors-signaling-pathways-and-dysregulation-in-canine-chronic-enteropathies-brief-review
#4
Romy M Heilmann, Karin Allenspach
Pattern-recognition receptors (PRRs) are expressed by innate immune cells and recognize pathogen-associated molecular patterns (PAMPs) as well as endogenous damage-associated molecular pattern (DAMP) molecules. With a large potential for synergism or convergence between their signaling pathways, PRRs orchestrate a complex interplay of cellular mediators and transcription factors, and thus play a central role in homeostasis and host defense. Aberrant activation of PRR signaling, mutations of the receptors and/or their downstream signaling molecules, and/or DAMP/PAMP complex-mediated receptor signaling can potentially lead to chronic auto-inflammatory diseases or development of cancer...
September 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28905319/pi3k-inhibition-protects-mice-from-nafld-by-down-regulating-cmklr1-and-nlrp3-in-kupffer-cells
#5
Wenfeng Zhang, Yan Liu, Mingbing Wu, Xiwen Zhu, Tao Wang, Kun He, Peizhi Li, Xiaoling Wu
Inflammation induced by high-fat diet (HFD) is of critical importance in the development of hepatic steatosis. The role of chemerin in the progress of nonalcoholic fatty liver disease (NAFLD) remains controversial. Here, we have evaluated the effects and mechanism of chemerin on insulin sensitivity and inflammation. An inhibitor (wortmannin) and agonist (insulin-like growth factor 1 (IGF-1) of phosphatidyl inositol 3-kinase (PI3K) were applied to Kupffer cells (KCs) after treatment with a concentration gradient of chemerin in vitro...
September 13, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28904064/structurally-novel-antiestrogens-elicit-differential-responses-from-constitutively-active-mutant-estrogen-receptors-in-breast-cancer-cells-and-tumors
#6
Benita S Katzenellenbogen, Yuechao Zhao, Mary J Laws, Valeria Sanabria Guillen, Yvonne Ziegler, Jian Min, Abhishek Sharma, Sung Hoon Kim, David Chu, Ben Ho Park, Steffi Oesterreich, Chengjian Mao, David J Shapiro, Kendall W Nettles, John A Katzenellenbogen
Many ERα-positive breast cancers develop resistance to endocrine therapy via mutation of estrogen receptors (ER) whose constitutive activation is associated with shorter patient survival. Because there is now a clinical need for new antiestrogens (AE) against these mutant ER, we describe here our development and characterization of three chemically novel AE that effectively suppress proliferation of breast cancer cells and tumors. Our AE are effective against wild type and Y537S and D538G ER, the two most commonly occurring constitutively active ER...
September 13, 2017: Cancer Research
https://www.readbyqxmd.com/read/28902711/triggering-of-inflammasome-by-impaired-autophagy-in-response-to-acute-experimental-parkinson-s-disease-involvement-of-the-pi3k-akt-mtor-pathway
#7
Sabrina Giacoppo, Placido Bramanti, Emanuela Mazzon
Several lines of evidence suggest that the inflammasome activation is involved in the progression of neurodegenerative diseases. However, the relation between Parkinson's disease (PD) and the inflammasome is still unclear. This study was designed to assess the involvement of inflammasome in acute experimental PD. Specifically, acute PD was induced in C57BL/6 mice by an injection of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). At seven days from MPTP induction, mice were euthanized and the midbrains were sampled to carry out immunohistochemical evaluations and western blot analysis...
September 11, 2017: Neuroreport
https://www.readbyqxmd.com/read/28900628/gene-expression-profiling-identifies-downregulation-of-the-neurotrophin-mapk-signaling-pathway-in-female-diabetic-peripheral-neuropathy-patients
#8
Lin Luo, Wen-Hua Zhou, Jiang-Jia Cai, Mei Feng, Mi Zhou, Su-Pei Hu, Jin Xu, Lin-Dan Ji
Diabetic peripheral neuropathy (DPN) is a common complication of diabetes mellitus (DM). It is not diagnosed or managed properly in the majority of patients because its pathogenesis remains controversial. In this study, human whole genome microarrays identified 2898 and 4493 differentially expressed genes (DEGs) in DM and DPN patients, respectively. A further KEGG pathway analysis indicated that DPN and DM share four pathways, including apoptosis, B cell receptor signaling pathway, endocytosis, and Toll-like receptor signaling pathway...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28890547/innate-immunity-in-tuberculosis-host-defense-vs-pathogen-evasion
#9
REVIEW
Cui Hua Liu, Haiying Liu, Baoxue Ge
The major innate immune cell types involved in tuberculosis (TB) infection are macrophages, dendritic cells (DCs), neutrophils and natural killer (NK) cells. These immune cells recognize the TB-causing pathogen Mycobacterium tuberculosis (Mtb) through various pattern recognition receptors (PRRs), including but not limited to Toll-like receptors (TLRs), Nod-like receptors (NLRs) and C-type lectin receptors (CLRs). Upon infection by Mtb, the host orchestrates multiple signaling cascades via the PRRs to launch a variety of innate immune defense functions such as phagocytosis, autophagy, apoptosis and inflammasome activation...
September 11, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28884089/splenic-microrna-expression-profiles-and-integration-analyses-involved-in-host-responses-to-salmonella-enteritidis-infection-in-chickens
#10
Peng Li, Wenlei Fan, Qinghe Li, Jie Wang, Ranran Liu, Nadia Everaert, Jie Liu, Yonghong Zhang, Maiqing Zheng, Huanxian Cui, Guiping Zhao, Jie Wen
To understand the role of miRNAs in regulating genes involved in the host response to Salmonella enteritidis (SE) infection, next generation sequencing was applied to explore the altered splenic expression of microRNAs (miRNAs) and deregulated genes in specific-pathogen-free chickens. Birds were either infected or not (controls, C) and those challenged with SE were evaluated 24 h later and separated into two groups on the basis of the severity of clinical symptoms and blood load of SE: resistant (R, SE challenged-slight clinical symptoms and <10(5) cfu / 10 μL), and susceptible (S, SE challenged-severe clinical symptoms and >10(7) cfu/10 μL)...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28880687/tnf-%C3%AE-potentiates-uric-acid-induced-interleukin-1%C3%AE-il-1%C3%AE-secretion-in-human-neutrophils
#11
Kohei Yokose, Shuzo Sato, Tomoyuki Asano, Makiko Yashiro, Hiroko Kobayashi, Hiroshi Watanabe, Eiji Suzuki, Chikako Sato, Hideko Kozuru, Hiroshi Yatsuhashi, Kiyoshi Migita
OBJECTIVE: Monosodium urate (MSU) has been shown to promote interleukin-1β (IL-1β) secretion in human monocytes, but the priming signals for NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome pathway remains elusive. In this study, we investigated the role of Tumor necrosis factor-alpha (TNF-α) on MSU-mediated IL-1β induction in human neutrophils. METHODS: Human neutrophils were stimulated with MSU, in the presence or absence of TNF-α priming...
September 7, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/28878001/nlr-nod1-signaling-promotes-survival-of-bcr-engaged-mature-b-cells-through-up-regulated-nod1-as-a-positive-outcome
#12
Kyoko Hayakawa, Anthony M Formica, Yan Zhou, Daiju Ichikawa, Masanao Asano, Yue-Sheng Li, Susan A Shinton, Joni Brill-Dashoff, Gabriel Núñez, Richard R Hardy
Although B cell development requires expression of the B cell antigen receptor (BCR), it remains unclear whether engagement of self-antigen provides a positive impact for most B cells. Here, we show that BCR engagement by self-ligand during development in vivo results in up-regulation of the Nod-like receptor member Nod1, which recognizes the products of intestinal commensal bacteria. In anti-thymocyte/Thy-1 autoreactive BCR knock-in mice lacking self-Thy-1 ligand, immunoglobulin light chain editing occurred, generating B cells with up-regulated Nod1, including follicular and marginal zone B cells with natural autoreactivity...
September 6, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28875940/subversion-of-macrophage-functions-by-bacterial-protein-toxins-and-effectors
#13
Muyang Wan, Yan Zhou, Yongqun Zhu
Macrophages represent one of the first lines of host immune defenses against the invasion of pathogenic bacteria. Many receptors, immune signaling pathways and cellular processes in macrophages, including Toll-like receptors, Nod-like receptors, phagocytosis, autophagy and programmed cell death, are involved in combating the infection of bacterial pathogens. For efficient colonization in the host, bacterial pathogens have evolved diverse mechanisms to interfere with macrophage functions to evade host defenses...
September 6, 2017: Current Issues in Molecular Biology
https://www.readbyqxmd.com/read/28874114/dual-transcriptome-of-the-immediate-neutrophil-and-candida-albicans-interplay
#14
Maria J Niemiec, Christian Grumaz, David Ermert, Christiane Desel, Madhu Shankar, José Pedro Lopes, Ian G Mills, Philip Stevens, Kai Sohn, Constantin F Urban
BACKGROUND: Neutrophils are traditionally considered transcriptionally inactive. Compared to other immune cells, little is known about their transcriptional profile during interaction with pathogens. METHODS: We analyzed the meta-transcriptome of the neutrophil-Candida albicans interplay and the transcriptome of C. albicans challenged with neutrophil extracellular traps (NETs) by RNA-Seq, considering yeast and hypha individually in each approach. RESULTS: The neutrophil response to C...
September 6, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28872670/tcr-pmhc-encounter-differentially-regulates-transcriptomes-of-tissue-resident-cd8-t-cells
#15
Akihiro Yoshikawa, Kevin Bi, Derin B Keskin, Guanglang Zhang, Bruce Reinhold, Ellis L Reinherz
To investigate the role of TCR-pMHC interaction in regulating lung CD8 tissue-resident T cell (TR ) differentiation, polyclonal responses were compared against NP366-374 /D(b) and PA224-233 /D(b) , two immunodominant epitopes that arise during influenza A infection in mice. Memory niches distinct from iBALTs develop within the lamina propria, supporting CD103+ and CD103- CD8 TR generation and intraepithelial translocation. Gene set enrichment analysis (GSEA) and weighted gene co-expression network analysis (WGCNA) identify dominant TCR, adherence junction, RIG-I-like and NOD-like pattern recognition receptor as well as TGFβ signaling pathways and memory signatures among PA224-233 /D(b) T cells consistent with T resident memory (TRM ) status...
September 5, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28864208/a-new-mechanism-of-inhibition-of-il-1%C3%AE-secretion-by-celastrol-through-the-nlrp3-inflammasome-pathway
#16
Wenyu Xin, Qiaoyun Wang, Dan Zhang, Chaoyun Wang
The NLRP3 (NOD-like receptor protein 3) inflammasome is a caspase-1-containing multiprotein complex that controls the release of IL-1β and has been associated with the development of inflammatory diseases. Celastrol, a pharmacologically active ingredient extracted from Tripterygium wilfordii Hook, has anti-inflammatory activities based on its inhibition of IL-1β secretion. The purpose of the present study was to investigate the possible modulation of NLRP3 inflammasome-mediated IL-1β and IL-18 release from macrophages by celastrol...
August 29, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28860068/protraction-of-neuropathic-pain-by-morphine-is-mediated-by-spinal-damage-associated-molecular-patterns-damps-in-male-rats
#17
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
https://www.readbyqxmd.com/read/28855484/recognition-of-cryptococcus-neoformans-by-pattern-recognition-receptors-and-its-role-in-host-defense-to-this-infection
#18
Ko Sato, Kazuyoshi Kawakami
Cryptococcus neoformans is a yeast-type opportunistic fungal pathogen with a capsule structure consisting of polysaccharides, such as glucuronoxylomannan and galactoxylomannan, and infects the lungs via an air-borne route. Most healthy individuals undergo asymptomatic infection with granulomatous lesions in the lungs caused by C. neoformans. However, immunocompromised hosts with severely impaired cellular immunity, such as those with acquired immune deficiency syndrome (AIDS), often suffer from disseminated infection into the central nervous system, leading to life-threatening meningoencephalitis...
2017: Medical Mycology Journal
https://www.readbyqxmd.com/read/28855077/effect-of-interleukin-1%C3%AE-inhibition-with-canakinumab-on-incident-lung-cancer-in-patients-with-atherosclerosis-exploratory-results-from-a-randomised-double-blind-placebo-controlled-trial
#19
Paul M Ridker, Jean G MacFadyen, Tom Thuren, Brendan M Everett, Peter Libby, Robert J Glynn
BACKGROUND: Inflammation in the tumour microenvironment mediated by interleukin 1β is hypothesised to have a major role in cancer invasiveness, progression, and metastases. We did an additional analysis in the Canakinumab Anti-inflammatory Thrombosis Outcomes Study (CANTOS), a randomised trial of the role of interleukin-1β inhibition in atherosclerosis, with the aim of establishing whether inhibition of a major product of the Nod-like receptor protein 3 (NLRP3) inflammasome with canakinumab might alter cancer incidence...
August 25, 2017: Lancet
https://www.readbyqxmd.com/read/28854748/pattern-recognition-receptor-genes-expression-profiling-in-indigenous-chickens-of-india-and-white-leghorn
#20
S Haunshi, Arun Kumar Burramsetty, T R Kannaki, K S Raja Ravindra, R N Chatterjee
Pattern recognition receptors (PRR) such as Toll-like receptors, NOD-like receptors, RIG-I helicase receptors, and C-type lectin receptors play a critical role in innate immunity as a first line of defense against invading pathogens through recognition of pathogen and/or damage-associated molecular patterns. Genetic makeup of birds is known to play a role in resistance or susceptibility to various infectious diseases. Therefore, the present study was carried out to elucidate the differential expression of PRR and some of the cytokine genes in peripheral blood mononuclear cells of indigenous chicken breeds such as Ghagus and Nicobari and an exotic chicken breed, White Leghorn (WLH)...
September 1, 2017: Poultry Science
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