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https://www.readbyqxmd.com/read/28215032/nlrp3-inflammasome-activation-regulated-by-nf-%C3%AE%C2%BAb-and-dapk-contributed-to-paraquat-induced-acute-kidney-injury
#1
Zhenning Liu, Xiaokai Wang, Yu Wang, Min Zhao
Paraquat can result in dysfunction of multiple organs after ingestion in human. However, the mechanisms of nucleotide-binding domain and leucine-rich repeat containing protein 3 (NLRP3) inflammasome activation in acute kidney injury have not been clearly demonstrated. The aim of this study was to determine the effect of NLRP3 inflammasome activation and its regulation by nuclear factor-kappa B (NF-κB) and death-associated protein kinase (DAPK). Male Wistar rats were treated with intraperitoneal injection of paraquat at 20 mg/kg, and NF-κB inhibitor BAY 11-7082 was pretreated at 10 mg/kg 1 h before paraquat exposure...
February 18, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28214980/sil2r-ratio-as-early-marker-for-response-in-hairy-cell-leukemia-and-the-prognostic-relevance-of-il28b-genotype-to-interferon-%C3%AE-therapy
#2
Stéphanie Jud, Jeroen S Goede, Oliver Senn, Katharina Spanaus, Markus G Manz, Rudolf Benz
Interferon-α (IFNα) was the first effective drug therapy for hairy cell leukemia (HCL). Nowadays, it is used as an alternative treatment in selected patients. Due to unlimited treatment time, monitoring and early prediction of response are important. Moreover, IFNα is used in the therapy of chronic hepatitis C, where a single nucleotide polymorphism of interleukin-28B gene (IL28B) correlates with therapy response. The role of this polymorphism in therapy response of IFNα-treated patients with HCL is unknown...
February 18, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28214973/a-multifunctional-alanine-rich-anti-inflammatory-peptide-bcp61-showed-potent-inhibitory-effects-by-inhibiting-both-nf-%C3%AE%C2%BAb-and-mapk-expression
#3
Yun Hee Choi, Yoon Seok Choi, Young Kyun Kim, Md Saifur Rahman, G C Pradeep, Jin Cheol Yoo, Joo-Won Suh
The purified BCP61 was reported to be a unique low-molecular-weight (MW) anti-microbial peptide because of its non-identical alanine-rich N-terminal sequence. In this study, we investigated the anti-inflammatory effects of BCP61 on induction of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), pro-inflammatory cytokines, nuclear factor-kappa B (NF-κB), and mitogen-activated protein kinases (MAPKs) in lipopolysaccharide (LPS)-stimulated Raw 264.7 cells. The treatment with BCP61, with varying concentrations of 10, 50, and 100 μg/mL, inhibited levels of expression of LPS-induced NF-κB and MAPKs (extracellular signal-related kinases (ERKs), c-Jun NH2-terminal kinase (JNK), and mitogen-activated protein (p38)) as well as production of pro-inflammatory mediators, such as nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6)...
February 18, 2017: Inflammation
https://www.readbyqxmd.com/read/28214926/role-of-serum-level-and-genetic-variation-of-il-28b-in-interferon-responsiveness-and-advanced-liver-disease-in-chronic-hepatitis-c-patients
#4
Abdolvahab Alborzi, Tayebeh Hashempour, Javad Moayedi, Zahra Musavi, Gholamreza Pouladfar, Shahin Merat
Interleukin-28B (IL-28B) is suspected to be associated with response to treatment and one of the basic immunological backgrounds in liver transplant candidate (LTC). We aimed to assess whether genotypes of IL-28B can play a role in therapeutic response or advanced stages of liver disease. A total of 364 subjects were genotyped for IL-28B rs12979860 and rs8099917 SNPs using PCR-RFLP assay. Moreover, IL-28 serum level, HCV loads, and genotype were performed. A significant increase was observed in the frequencies of unfavorable rs12979860 genotypes/CT + TT in the chronic hepatitis C (CHC) and LTC groups...
February 18, 2017: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/28214886/adenovirus-vector-harboring-the-hbcag-and-tripeptidyl-peptidase-ii-genes-induces-potent-cellular-immune-responses-in-vivo
#5
Quanhui Tan, Siyuan Ma, Jianjun Hu, Xiaohua Chen, Yongsheng Yu, Zhenghao Tang, Guoqin Zang
BACKGROUND: Chronic hepatitis B virus (HBV) infection is associated with a weak but specific cellular immune response of the host to HBV. Tripeptidyl peptidaseⅡ (TPPⅡ), an intracellular macromolecule and proteolytic enzyme, plays an important complementary and compensatory role for the proteasome during viral protein degradation and major histocompatibility complex class I antigen presentation by inducing a specific cellular immune response in vivo. Based on a previous study, we aimed to explore the role of MHC class I antigen presentation in vivo and the mechanisms that may be involved...
January 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214861/sirt1-regulates-the-inflammatory-response-of-vascular-adventitial-fibroblasts-through-autophagy-and-related-signaling-pathway
#6
Wei-Rong Wang, Ting-Ting Li, Ting Jing, Yan-Xiang Li, Xiao-Feng Yang, Yan-Hao He, Wei Zhang, Rong Lin, Ji-Ye Zhang
BACKGROUND/AIMS: Autophagy is a lysosomal degradation pathway that is essential for cellular survival, differentiation, and homeostasis. Sirtuin 1 (SIRT1), a NAD+-dependent deacetylase, plays a pivotal role in modulation of autophagy. Recent studies found that autophagy was involved in the regulation of inflammatory response. In this study, we aimed to determine the effect of SIRT1 on autophagy and inflammation, and whether autophagy can regulate the inflammatory response in vascular adventitial fibroblasts (VAFs)...
February 3, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214858/hepatitis-b-virus-core-antigen-stimulates-il-6-expression-via-p38-erk-and-nf-%C3%AE%C2%BAb-pathways-in-hepatocytes
#7
Zhi Chen, Yang-Xia Li, Hai-Jing Fu, Yan-Li Ren, Ling Zou, Shi-Zhen Shen, Ping Chen, Ting Sun, Chun-Hong Huang
BACKGROUND: Hepatitis B virus (HBV) causes both acute and chronic liver injury. Viral proteins are involved in the pathological progress. Hepatitis B core antigen (HBcAg), a component of viral nucleocapsid, is not only essential for HBV lifecycle, but also exhibits strong immunogenicity. The cytoplasmic location of HBcAg in liver biopsy is associated with liver injury and inflammation, but the exact mechanisms remain to be elaborated. METHODS: Huh7, SMMC-7721 and L-02 cells were transfected with pEGFP-N1-HBcAg to establish an intracellular HBcAg expression model...
January 17, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214842/inhibition-of-methylglyoxal-induced-ages-rage-expression-contributes-to-dermal-protection-by-n-acetyl-l-cysteine
#8
Chun-Tao Yang, Fu-Hui Meng, Li Chen, Xiang Li, Lai-Jian Cen, Yu-Hua Wen, Hui Zhang, Cai-Chen Li
BACKGROUND/AIM: Accumulation of advanced glycation end products (AGEs) is a major cause of diabetes mellitus (DM) skin complications. Methylglyoxal (MGO), a reactive dicarbonyl compound, is a crucial intermediate of AGEs generation. N-acetyl-L-cysteine (NAC), an active ingredient of some medicines, can induce endogenous GSH and hydrogen sulfide generation, and set off a condensation reaction with MGO. However, there is rare evidence to show NAC can alleviate DM-induced skin injury through inhibition of AGEs generation or toxicity...
February 13, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214689/paeoniflorin-ameliorates-cholestasis-via-regulating-hepatic-transporters-and-suppressing-inflammation-in-anit-fed-rats
#9
Yanling Zhao, Xuan He, Xiao Ma, Jianxia Wen, Pengyan Li, Jiabo Wang, Ruisheng Li, Yun Zhu, Shizhang Wei, Haotian Li, Xuelin Zhou, Kun Li, Honghong Liu, Xiaohe Xiao
Paeoniflorin has shown the obvious effect on cholestasis according to our previous research. However, its mechanism has not been absolutely explored yet. This study aims at evaluating the potential effect of paeoniflorin on alpha-naphthylisothiocyanate (ANIT) -induced cholestasis by inhibiting nuclear factor kappa-B (NF-κB) and simultaneously regulating hepatocyte transporters. Cholestasis was induced by administration of ANIT. The effect of paeoniflorin on serum indices such as total bilirubin (TBIL), direct bilirubin (DBIL), aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), γ-glutamyltranspeptidase (γ-GT), total bile acid (TBA) and histopathology of liver were determined...
February 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28214674/development-of-a-quick-serum-il-6-measuring-system-in-rheumatoid-arthritis
#10
Kensuke Koyama, Tetsuro Ohba, Kentaro Ishii, Giman Jung, Hirotaka Haro, Kenichi Matsuda
OBJECTIVE: Interleukin-6 (IL-6) plays a crucial role in the pathogenesis of rheumatoid arthritis (RA). Both fulfillment of remission criteria and assessment of other methods of evaluation of RA are important for preventing joint damage progression. Measurement of serum IL-6 concentrations has been reported to be useful for monitoring RA disease activity. However, it takes at least 4-5h to measure serum IL-6 concentrations using traditional methods, which limits its utility during routine assessment in daily clinical practice settings...
February 16, 2017: Cytokine
https://www.readbyqxmd.com/read/28214551/effect-of-benzalkonium-chloride-on-trabecular-meshwork-cells-in-a-new-in-vitro-3d-trabecular-meshwork-model-for-glaucoma
#11
Meryem Bouchemi, Christophe Roubeix, Karima Kessal, Luisa Riancho, Anne-Laure Raveu, Hayet Soualmia, Christophe Baudouin, Françoise Brignole-Baudouin
PURPOSE: To validate a new culture model of primary human trabecular meshwork cells (p-hTMCs) using Matrigel®, in order to mimic in vitro 3D-TM organization, and to investigate the proinflammatory effect of benzalkonium chloride (BAK) in 3D p-hTMC cultures. METHODS: p-hTMCs, seeded onto Matrigel®-coated inserts were stimulated with BAK (10(-4)%), dexamethasone (DEX) (10(-6)M) or transforming growth factor-beta 2 (TGF-β2) (5ng/ml) for 48h and observed with confocal microscopy...
February 15, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28214226/cd49a-expression-defines-tissue-resident-cd8-t-cells-poised-for-cytotoxic-function-in-human-skin
#12
Stanley Cheuk, Heinrich Schlums, Irène Gallais Sérézal, Elisa Martini, Samuel C Chiang, Nicole Marquardt, Anna Gibbs, Ebba Detlofsson, Andrea Introini, Marianne Forkel, Charlotte Höög, Annelie Tjernlund, Jakob Michaëlsson, Lasse Folkersen, Jenny Mjösberg, Lennart Blomqvist, Marcus Ehrström, Mona Ståhle, Yenan T Bryceson, Liv Eidsmo
Tissue-resident memory T (Trm) cells form a heterogeneous population that provides localized protection against pathogens. Here, we identify CD49a as a marker that differentiates CD8(+) Trm cells on a compartmental and functional basis. In human skin epithelia, CD8(+)CD49a(+) Trm cells produced interferon-γ, whereas CD8(+)CD49a(-) Trm cells produced interleukin-17 (IL-17). In addition, CD8(+)CD49a(+) Trm cells from healthy skin rapidly induced the expression of the effector molecules perforin and granzyme B when stimulated with IL-15, thereby promoting a strong cytotoxic response...
February 13, 2017: Immunity
https://www.readbyqxmd.com/read/28214085/folic-acid-protects-against-lead-acetate-induced-hepatotoxicity-by-decreasing-nf-%C3%AE%C2%BAb-il-1%C3%AE-production-and-lipid-peroxidation-mediataed-cell-injury
#13
Eman S H Abd Allah, Dalia M Badary
Folic acid plays an important role in cellular metabolic activities. The present study was designed to investigate the protective effect of folic acid against lead acetate-induced hepatotoxicity. Twenty four male Wistar albino rats were randomly divided into four groups, six animals each. Negative control group received the vehicle, positive control group received 1mg/kg folic acid for five consecutive days/week for 4 weeks orally, lead-exposed group received 10mg/kg lead acetate intraperitoneally (IP) for five consecutive days/week for 4 weeks, and lead-treated group received 10mg/kg lead acetate IP and 1mg/kg folic acid orally for five consecutive days/week for 4 weeks concurrently...
February 10, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28214084/il-10-and-tgf-%C3%AE-roles-in-chondroprotective-effects-of-glucosamine-in-experimental-osteoarthritis
#14
Nermien E Waly, Abeer Refaiy, Nora M Aborehab
OBJECTIVE: Osteoarthritis (OA) is a complex disease of the whole joint. Glucosamine (GlcN) treatment may have a chondroprotective effect on OA. We investigated the mechanism of action of glucosamine treatment through interleukin-10 (Il-10) and transforming growth factor β-1 (TGF β-1). METHODS: Thirty male albino rats were used. A single intraarticular (i.a.) injection of 2mg of Monosodium Iodoacetate (MIA) was injected into the knee joint of anesthetized rats...
February 11, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28213794/selected-cytokine-pathways-in-rheumatoid-arthritis
#15
REVIEW
Mélissa Noack, Pierre Miossec
Rheumatoid arthritis (RA) is a chronic inflammatory disease leading to joint destruction. Cytokines play a key role in its pathogenesis. They contribute to the induction and maintenance of inflammation and thus provide therapeutic targets. Many cytokines are involved in RA, and this review focuses on a few critical ones: tumor necrosis factor (TNF), interleukin (IL)-6, IL-1, IL-17, and GM-CSF. TNF and IL-6 are both well-established targets in RA treatment, and new biologic agents are reaching the market. IL-1 represents a more complex cytokine as results in humans do not reach those in animal models...
February 17, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28213269/protective-effects-of-morin-on-lipopolysaccharide-d-galactosamine-induced-acute-liver-injury-by-inhibiting-tlr4-nf-%C3%AE%C2%BAb-and-activating-nrf2-ho-1-signaling-pathways
#16
Ye Tian, Zheng Li, Bingyu Shen, Qiaoling Zhang, Haihua Feng
Morin, a bioactive flavonoid extracted from the bark of Moraceae plants and many medicinal herbs, has anti-inflammatory and antioxidative effects. In this research, we explored the protective effects of morin against lipopolysaccharide (LPS) and d-galactosamine (D-GalN) induced acute liver injury in mice. Mice were given an intraperitoneal injection of morin before LPS and D-GalN treatment and the HepG2 cells were only given morin to investigate its effects. The results showed that morin markedly inhibited the production of serum alanine transaminase (ALT), aspartate aminotransferase (AST), interleukin-6 (IL-6), tumor necrosis factor (TNF-α) and hepatic TNF-α, IL-6, and myeloperoxidase (MPO) induced by LPS/D-GalN...
February 14, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28213267/ferulic-acid-inhibits-neuro-inflammation-in-mice-exposed-to-chronic-unpredictable-mild-stress
#17
Ya-Min Liu, Ji-Duo Shen, Li-Ping Xu, Han-Bing Li, Yu-Cheng Li, Li-Tao Yi
Ferulic acid is a hydroxycinnamic acid that widely presents in plant cell wall components. It has been demonstrated that ferulic acid can attenuate depressive-like behaviors in both forced swimming test and tail suspension test. Considering that depression is an inflammatory related mental disease, our present study was aimed to investigate the role of ferulic acid in the regulation of microglia activation, pro-inflammatory cytokines, nuclear factor kappa B (NF-κB) and nucleotide binding and oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome in mice exposed to chronic unpredictable mild stress (CUMS)...
February 14, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28213090/glycyrrhetinic-acid-attenuates-lipopolysaccharide-induced-fulminant-hepatic-failure-in-d-galactosamine-sensitized-mice-by-up-regulating-expression-of-interleukin-1-receptor-associated-kinase-m
#18
Xinru Yin, Gong Xia, Li Zhang, Rong Jiang, Ge Kuang, Bin Wang, Xinyu Chen, Jingyuan Wan
Glycyrrhetinic acid (GA), the main active ingredient of licorice, reportedly has anti-inflammatory and hepatoprotective properties, but its molecular mechanisms remain be elusive. In the present study, Balb/c mice were pretreated with GA (10, 30, or 100mg/kg) 1h before lipopolysaccharide (LPS)/d-galactosamine (D-GalN) administration. In other in vitro experiment, RAW264.7 macrophages were pretreated with GA before LPS exposure. The mortality, hepatic tissue histology, serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were analyzed...
February 14, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28212946/divergent-effects-of-brain-interleukin-1%C3%A3-in-mediating-fever-lethargy-anorexia-and-conditioned-fear-memory
#19
Tamzyn L Baartman, Tanya Swanepoel, Ruth M Barrientos, Helen P Laburn, Duncan Mitchell, Lois M Harden
The influence of brain interleukin-1 (IL-1ß) on memory processes includes both detrimental and beneficial effects. To further explore the dynamics of brain IL-1ß in mediating learning and memory during acute sickness, we injected species-homologous rat IL-1ß (100ng/5μl) or vehicle (0.1% bovine serum albumin, 5μl) directly into the cisterna magna (i.c.m.) of male Sprague-Dawley rats. We measured, in parallel, body temperature, food intake, body mass, cage activity, as well as learning and memory using contextual fear conditioning...
February 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28212870/the-174-g-c-interleukin-6-gene-polymorphism-is-associated-with-angiographic-progression-of-coronary-artery-disease-in-a-4-year-period
#20
Konstantinos Toutouzas, Dimitrios Klettas, Nikolaos Anousakis-Vlachochristou, Konstantinos Melidis, Zeta Azilazian, Maria Asimomiti, Antonios Karanasos, Anastasios Spanos, Eleftherios Tsiamis, Petros Nihoyannopoulos, Dimitris Tousoulis
BACKGROUND: Inflammation is the key process underlying the clinical course of coronary artery disease (CAD). C-reactive protein (CRP) and interleukin-6 (IL-6) participate in the pathophysiology and act as biomarkers. We sought to examine whether known single nucleotide polymorphisms (SNPs) impact the progression of CAD, reflecting higher inflammatory activity. METHODS: We retrospectively evaluated coronary angiographies of patients with already established CAD who were re-investigated for stable/unstable angina after a time interval >12 months...
February 14, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
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