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https://www.readbyqxmd.com/read/28078859/role-of-vitacamphore-in-improving-central-pro-inflammatory-cytokines-following-transient-global-ischemia
#1
J Lin, L Pang, X L Liu, J Xing
Pro-inflammatory cytokines (PICs) including interleukin-1β (IL-1β), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) are responsive to ischemic stress. This process thereby modulates the responsiveness of many cell types under diseased conditions. The current study was to examine the role played by vitacamphore (VCP) in regulating the levels of PICs and protein expression of PIC receptors in the cerebral cortex and hippocampus of rats after cardiac arrest (CA)-induced transient global ischemia. CA was induced by asphyxia followed by cardiopulmonary resuscitation (CPR) in rats...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28070612/macrolide-antibiotics-differentially-influence-human-hepg2-cytotoxicity-and-modulate-intrinsic-extrinsic-apoptotic-pathways-in-rat-hepatocellular-carcinoma-model
#2
Nagwa I Abdel-Hamid, Mona F El-Azab, Yasser M Moustafa
This study was designed to examine the potential antitumor effect of some macrolides: clarithromycin, azithromycin, and erythromycin on chemically induced hepatocellular carcinoma (HCC) in rats and on human hepatoma cells (HepG2) as well. The possible underlying antiapoptotic mechanisms were investigated. Antiproliferative activity was assessed in HepG2 using Sulforhodamine-B staining method. In vivo, HCC was induced in rats by initiation-selection-promotion protocol using diethylnitrosamine (200 mg/kg, single i...
January 9, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/28059467/muty-dna-glycosylase-protects-cells-from-tumor-necrosis-factor-alpha-induced-necroptosis
#3
An Hue Vy Tran, Se Hee Han, Joon Kim, Francesca Grasso, Ye Sun Han
Numerous studies have implied that mutY DNA glycosylase (MYH) is involved in the repair of post-replicative mispairs and plays a critical role in the base excision repair pathway. Recent in vitro studies have shown that MYH interacts with tumor necrosis factor receptor type 1-associated death domain (TRADD), a key effector protein of tumor necrosis factor receptor-1 (TNFR1) signaling. The association between MYH and TRADD is reversed during tumor necrosis factor alpha (TNF-α)- and camptothecin (CPT)-induced apoptosis, and enhanced during TNF-α-induced survival...
January 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28054230/tumor-necrosis-factor-alpha-and-pregnancy-focus-on-biologics-an-updated-and-comprehensive-review
#4
REVIEW
Jaume Alijotas-Reig, Enrique Esteve-Valverde, Raquel Ferrer-Oliveras, Elisa Llurba, Josep Maria Gris
Tumor necrosis factor-α (TNF-α) is a central regulator of inflammation, and TNF-α antagonists may be effective in treating inflammatory disorders in which TNF-α plays a major pathogenic role. TNF-α has also been associated with inflammatory mechanisms related to implantation, placentation, and pregnancy outcome. TNF-α is secreted by immune cells and works by binding to TNFR1 and TNFR2 cell receptors. TNF-α is also related to JAK/STAT pathways, which opens up hypothetical new targets for modifying. The accurate balance between Th1 cytokines, mainly TNF-α, Th17, and Th2, particularly IL-10 is essential to achieve good obstetric outcomes...
January 4, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28052249/opposing-functions-of-microglial-and-macrophagic-tnfr2-in-the-pathogenesis-of-experimental-autoimmune-encephalomyelitis
#5
Han Gao, Matt C Danzi, Claire S Choi, Mehran Taherian, Camilla Dalby-Hansen, Ditte G Ellman, Pernille M Madsen, John L Bixby, Vance P Lemmon, Kate L Lambertsen, Roberta Brambilla
In multiple sclerosis (MS), soluble tumor necrosis factor (TNF) is detrimental via activation of TNF receptor 1 (TNFR1), whereas transmembrane TNF is beneficial primarily by activating TNF receptor 2 (TNFR2). Here, we investigate the role of TNFR2 in microglia and monocytes/macrophages in experimental autoimmune encephalomyelitis (EAE), a model of MS, by cell-specific gene targeting. We show that TNFR2 ablation in microglia leads to early onset of EAE with increased leukocyte infiltration, T cell activation, and demyelination in the central nervous system (CNS)...
January 3, 2017: Cell Reports
https://www.readbyqxmd.com/read/28049760/a-study-of-tnf-pathway-activation-in-schizophrenia-and-bipolar-disorder-in-plasma-and-brain-tissue
#6
Eva Zsuzsanna Hoseth, Thor Ueland, Ingrid Dieset, Rebecca Birnbaum, Joo Heon Shin, Joel Edward Kleinman, Thomas Michael Hyde, Ragni Helene Mørch, Sigrun Hope, Tove Lekva, Aurelija Judita Abraityte, Annika E Michelsen, Ingrid Melle, Lars Tjelta Westlye, Torill Ueland, Srdjan Djurovic, Pål Aukrust, Daniel R Weinberger, Ole Andreas Andreassen
OBJECTIVE: A proinflammatory imbalance in the tumor necrosis factor (TNF) system may contribute to the pathogenesis of schizophrenia (SCZ) and bipolar disorders (BDs) and related comorbidities. We investigated the relative distribution of TNF-related molecules in blood and dorsolateral prefrontal cortex (DLPFC) in these disorders. METHOD: We measured plasma levels of TNF, soluble TNF receptor 1 (sTNFR1), soluble TNF receptor 2 (sTNFR2), and a disintegrin and metalloprotease-17 (ADAM17) using enzyme immunoassays and calculated the TNF/sTNFRs ratio (TNF/sTNFR1+sTNFR2) in a sample of 816 SCZ and BD spectrum patients and 624 healthy controls (HCs)...
January 3, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28043509/susceptibility-to-pulmonary-tuberculosis-host-genetic-deficiency-in-tumor-necrosis-factor-alpha-tnf-%C3%AE-gene-and-tumor-necrosis-factor-receptor-2-tnfr2
#7
Ehsan Ghamari, Poopak Farnia, Shima Saif, Mehran Marashian, Jaladein Ghanavi, Payam Tabarsi, Parissa Farnia, Ali Akbar Velayati
OBJECTIVE/BACKGROUND: The susceptibility to tuberculosis (TB) depends upon different factors, and the risk of developing diseases after infection with Mycobacterium tuberculosis ranges from 5% to 10%. This suggests that besides the mycobacterial itself, the host genetic factors may determine the differences in host susceptibility to TB. Among the important risk factors, cytokines and especially tumor necrosis factor alpha (TNF-α) genes, are thought to be responsible for regulating the protective immune responses...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28039298/sublytic-c5b-9-induces-glomerular-mesangial-cell-apoptosis-through-the-cascade-pathway-of-mekk2-p38-mapk-irf-1-tradd-caspase-8-in-rat-thy-1-nephritis
#8
Ganqian Zhu, Wen Qiu, Yongting Li, Chenhui Zhao, Fengxia He, Mengya Zhou, Lulu Wang, Dan Zhao, Yanlai Lu, Jing Zhang, Yu Liu, Tianyi Yu, Yingwei Wang
The apoptosis of glomerular mesangial cells (GMCs) in the early phase of rat Thy-1 nephritis (Thy-1N), a model of human mesangioproliferative glomerulonephritis (MsPGN), is primarily triggered by sublytic C5b-9. However, the mechanism of GMC apoptosis induced by sublytic C5b-9 remains unclear. In this study, we demonstrate that expressions of TNFR1-associated death domain-containing protein (TRADD) and IFN regulatory factor-1 (IRF-1) were simultaneously upregulated in the renal tissue of Thy-1N rats (in vivo) and in GMCs under sublytic C5b-9 stimulation (in vitro)...
December 30, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28038359/green-tea-extract-treatment-reduces-nf%C3%AE%C2%BAb-activation-in-mice-with-diet-induced-nonalcoholic-steatohepatitis-by-lowering-tnfr1-and-tlr4-expression-and-ligand-availability
#9
Jinhui Li, Teryn N Sapper, Eunice Mah, Meredith V Moller, Joshua B Kim, Chureeporn Chitchumroonchokchai, Joshua D McDonald, Richard S Bruno
NFκB-mediated inflammation contributes to liver injury during nonalcoholic steatohepatitis (NASH). We hypothesized that antiinflammatory activities of green tea extract (GTE) during NASH would lower tumor necrosis factor receptor-1 (TNFR1)- and Toll-like receptor-4 (TLR4)-mediated NFκB activation. Male C57BL6/J mice (6 weeks old) were fed a low-fat (LF) or high-fat (HF) diet for 12 weeks to induce NASH. They were then randomized to continue on these diets supplemented with 0 or 2% GTE (n=10/group) for an additional 8 weeks prior to evaluating NASH, NFκB inflammation and TNFR1 and TLR4 receptor complexes and their respective ligands, TNFα and endotoxin...
December 21, 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28030812/aflatoxin-b1-invokes-apoptosis-via-death-receptor-pathway-in-hepatocytes
#10
Muhammad Jameel Mughal, Xi Peng, Yi Zhou, Jing Fang
The fungal metabolites produced by Aspergillus flavus and Aspergillus parasiticus cause detrimental health effects on humans and animals. Particularly aflatoxin B1 (AFB1) is the most studied and a well-known global carcinogen, producing hepatotoxic, genotoxic and immunotoxic effects in multiple species. AFB1 is shown to provoke liver dysfunctioning by causing hepatocytes apoptosis and disturbing cellular enzymatic activities. In liver, AFB1 causes apoptosis via extrinsic mechanism because of high expression of death receptor pathway...
December 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/28011876/deletion-of-tumor-necrosis-factor-%C3%AE-receptor-1-tnfr1-protects-against-diet-induced-obesity-by-means-of-increased-thermogenesis
#11
Talita Romanatto, Erika A Roman, Ana P Arruda, Raphael G Denis, Carina Solon, Marciane Milanski, Juliana C Moraes, Maria L Bonfleur, Giovanna R Degasperi, Paty K Picardi, Sandro Hirabara, Antonio C Boschero, Rui Curi, Licio A Velloso
No abstract text is available yet for this article.
December 23, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27999433/insane-in-the-membrane-a-structural-perspective-of-mlkl-function-in-necroptosis
#12
REVIEW
Emma J Petrie, Joanne M Hildebrand, James M Murphy
Necroptosis (or 'programmed necrosis') is a caspase-independent cell death pathway that operates downstream of death receptors, including Tumour Necrosis Factor Receptor-1 (TNFR1), and the Toll-like receptors, TLR3 and TLR4. Owing to its immunogenicity, necroptosis has been attributed roles in the pathogenesis of several diseases, including inflammatory bowel disease and the tissue damage arising from ischemic-reperfusion injuries. Only over the past 7 years has the core machinery of this pathway, the receptor-interacting protein kinase-3 (RIPK3) and the pseudokinase, Mixed Lineage Kinase domain-Like (MLKL), been defined...
December 21, 2016: Immunology and Cell Biology
https://www.readbyqxmd.com/read/27998909/association-of-circulating-biomarkers-adrenomedullin-tnfr1-and-nt-probnp-with-renal-function-decline-in-patients-with-type-2-diabetes-a-french-prospective-cohort
#13
Pierre-Jean Saulnier, Elise Gand, Gilberto Velho, Kamel Mohammedi, Philippe Zaoui, Mathilde Fraty, Jean Michel Halimi, Ronan Roussel, Stéphanie Ragot, Samy Hadjadj
OBJECTIVE: We explored the prognostic value of three circulating candidate biomarkers-midregional-proadrenomedullin (MR-proADM), soluble tumor necrosis factor receptor 1 (sTNFR1), and N-terminal prohormone brain natriuretic peptide (NT-proBNP)-for change in renal function in patients with type 2 diabetes. RESEARCH DESIGN AND METHODS: Outcomes were defined as renal function loss (RFL), ≥40% decline of estimated glomerular filtration rate (eGFR) from baseline, and rapid renal function decline (RRFD), absolute annual eGFR slope <-5 mL/min/year...
December 20, 2016: Diabetes Care
https://www.readbyqxmd.com/read/27998892/tnf-%C3%AE-differentially-regulates-synaptic-plasticity-in-the-hippocampus-and-spinal-cord-by-microglia-dependent-mechanisms-after-peripheral-nerve-injury
#14
Yong Liu, Li-Jun Zhou, Jun Wang, Dai Li, Wen-Jie Ren, Jiyun Peng, Xiao Wei, Ting Xu, Wen-Jun Xin, Rui-Ping Pang, Yong-Yong Li, Zhi-Hai Qin, Madhuvika Murugan, Mark P Mattson, Long-Jun Wu, Xian-Guo Liu
: Clinical studies show that chronic pain is accompanied by memory deficits and reduction in hippocampal volume. Experimental studies show that spared nerve injury (SNI) of sciatic nerve induces long-term potentiation (LTP) at C-fiber synapses in spinal dorsal horn but impairs LTP in hippocampus. The opposite changes may contribute to neuropathic pain and memory deficits, respectively. However, the cellular and molecular mechanisms underlying the functional synaptic changes are unclear...
December 20, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27979472/regulation-of-myocardial-stromal-cell-derived-factor-1%C3%AE-cxcl12-by-tumor-necrosis-factor-signaling
#15
Meijing Wang, Lina Wang, Chunyan Huang, I-Wen Wang, Mark W Turrentine
BACKGROUND: Global myocardial ischemia-reperfusion (I/R) occurs during cardiac operations. This I/R injury leads to increased production of tumor necrosis factor α (TNF) instantly and upregulated expression of stromal cell-derived factor 1 α (SDF-1). On the basis of the published data from our laboratory and other groups, locally produced TNF contributes to cardiac dysfunction mainly via binding to its receptor (tumor necrosis factor receptor 1 [TNFR1]), whereas ischemia-induced myocardial SDF-1 mediates cardioprotection...
January 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/27976743/microcystin-leucine-arginine-causes-cytotoxic-effects-in-sertoli-cells-resulting-in-reproductive-dysfunction-in-male-mice
#16
Yabing Chen, Yuan Zhou, Jing Wang, Lihui Wang, Zou Xiang, Dongmei Li, Xiaodong Han
Microcystin-leucine arginine (MC-LR) is a potent toxin for Sertoli cells. However, the specific molecular mechanisms of MC-induced cytotoxicity still remain unclear. In this study, we performed a comprehensive analyses of changes of miRNAs and mRNAs in Sertoli cells treated with MC-LR. Through computational approaches, we showed the pivotal roles of differentially expressed miRNAs that were associated with cell metabolism, cellular growth and proliferation, cell-to-cell signaling and interaction and cellular movement...
December 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27940565/differentially-expressed-genes-and-gene-networks-involved-in-pig-ovarian-follicular-atresia
#17
Elena Terenina, Stephane Fabre, Agnes Bonnet, Danielle Monniaux, Christele Robert-Granie, Magali SanCristobal, Julien Sarry, Florence Vignoles, Florence Gondret, Philippe Monget, Gwenola Tosser-Klopp
Ovarian folliculogenesis corresponds to the development of follicles leading to either ovulation or degeneration, this latter process being called atresia. Even if atresia involves apoptosis, its mechanism is not well-understood. The objective of this project was to analyse global gene expression in pig granulosa cells of ovarian follicles during atresia. The transcriptome analysis was performed using 9216 cDNAs microarray to identify gene networks and candidate genes involved in pig ovarian follicular atresia...
December 9, 2016: Physiological Genomics
https://www.readbyqxmd.com/read/27932980/tnf-%C3%AE-induced-cpla2-expression-via-nadph-oxidase-reactive-oxygen-species-dependent-nf-%C3%AE%C2%BAb-cascade-on-human-pulmonary-alveolar-epithelial-cells
#18
Chih-Chung Lin, Wei-Ning Lin, Rou-Ling Cho, Chen-Yu Wang, Li-Der Hsiao, Chuen-Mao Yang
Tumor necrosis factor-α (TNF-α) triggers activation of cytosolic phospholipase A2 (cPLA2) and then enhancing the synthesis of prostaglandin (PG) in inflammatory diseases. However, the detailed mechanisms of TNF-α induced cPLA2 expression were not fully defined in human pulmonary alveolar epithelial cells (HPAEpiCs). We found that TNF-α-stimulated increases in cPLA2 mRNA (5.2 folds) and protein (3.9 folds) expression, promoter activity (4.3 folds), and PGE2 secretion (4.7 folds) in HPAEpiCs, determined by Western blot, real-time PCR, promoter activity assay and PGE2 ELISA kit...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27932612/legionella-longbeachae-is-immunologically-silent-and-highly-virulent-in-vivo
#19
Liliana M Massis, Mariana A Assis-Marques, Fernanda V S Castanheira, Yasmin J Capobianco, Andiamira C Balestra, Pedro Escoll, Rebecca E Wood, Graziele Z Manin, Vani M A Correa, José C Alves-Filho, Fernando Q Cunha, Carmen Buchrieser, Marcos C Borges, Hayley J Newton, Dario S Zamboni
BACKGROUND: Legionella longbeachae (Llo) and Legionella pneumophila (Lpn) are the most common pneumonia-causing agents of the genus. Although both species can be lethal to humans and are highly prevalent, little is known about the molecular pathogenesis of Llo infections. In murine models of infection, Lpn infection is self-limited whereas Llo infection is lethal. DESIGN/METHODS: We used mouse macrophages, human macrophages, human epithelial cells and mouse infections in vivo to evaluate multiple parameters of the infection...
December 8, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27932454/inducible-colonic-m-cells-are-dependent-on-tnfr2-but-not-lt%C3%AE-r-identifying-distinct-signalling-requirements-for-constitutive-versus-inducible-m-cells
#20
Erinn A Parnell, Erin M Walch, David D Lo
BACKGROUND AND AIMS: M cells associated with organised lymphoid tissues such as intestinal Peyer's patches provide surveillance of the intestinal lumen. Inflammation or infection in the colon can induce an M cell population associated with lymphoid infiltrates; paradoxically, induction is dependent on the inflammatory cytokine tumour necrosis factor [TNF]-α. Anti-TNFα blockade is an important therapeutic in inflammatory bowel disease, so understanding the effects of TNFα signalling is important in refining therapeutics...
December 7, 2016: Journal of Crohn's & Colitis
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