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https://www.readbyqxmd.com/read/28346398/sirtuin-1-sirt1-overexpression-in-baf3-cells-contributes-to-cell-proliferation-promotion-apoptosis-resistance-and-pro-inflammatory-cytokine-production
#1
Qian Wang, Chao Yan, Miaomiao Xin, Li Han, Yunqing Zhang, Mingshu Sun
BACKGROUND B lymphocyte hyperactivity is a main characteristic of systemic lupus erythematosus (SLE), and B lymphocytes play a prominent pathogenic role in the development and progression of SLE. The aim of this study was to investigate the role of Sirtuin 1 (Sirt1) in B lymphocytes. MATERIAL AND METHODS Mouse B lymphocytes BaF3 was transfected with Sirt1 vector or shRNA against Sirt1. Then the transfected cells viability and apoptosis were respectively determined by MTT assay and flow cytometry. In addition, the mRNA levels of three pro-inflammatory cytokines and p53 were detected by RT-PCR...
March 27, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28346397/the-process-and-regulatory-components-of-inflammation-in-brain-oncogenesis
#2
REVIEW
A G M Mostofa, Surendra R Punganuru, Hanumantha Rao Madala, Mohammad Al-Obaide, Kalkunte S Srivenugopal
Central nervous system tumors comprising the primary cancers and brain metastases remain the most lethal neoplasms and challenging to treat. Substantial evidence points to a paramount role for inflammation in the pathology leading to gliomagenesis, malignant progression and tumor aggressiveness in the central nervous system (CNS) microenvironment. This review summarizes the salient contributions of oxidative stress, interleukins, tumor necrosis factor-α (TNF-α), cyclooxygenases, and transcription factors such as signal transducer and activator of transcription 3 (STAT3) and nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-κB) and the associated cross-talks to the inflammatory signaling in CNS cancers...
March 27, 2017: Biomolecules
https://www.readbyqxmd.com/read/28345549/sub-anesthesia-dose-of-isoflurane-in-60-oxygen-reduces-inflammatory-responses-in-experimental-sepsis-models
#3
Yi Huang, Xiao-Xia Wang, Dong-Dong Sun, Ze-Xin Zhang, Wan-Wan Yang, Tian Shao, Han Han, Er-Fei Zhang, Zhong-Shu Pu, Zuo-Xu Hou, Hai-Long Dong, Li-Ze Xiong, Li-Chao Hou
BACKGROUND: Sepsis is a major cause of mortality in Intensive Care Units. Anesthetic dose isoflurane and 100% oxygen were proved to be beneficial in sepsis; however, their application in septic patients is limited because long-term hyperoxia may induce oxygen toxicity and anesthetic dose isoflurane has potential adverse consequences. This study was scheduled to find the optimal combination of isoflurane and oxygen in protecting experimental sepsis and its mechanisms. METHODS: The effects of combined therapy with isoflurane and oxygen on lung injury and sepsis were determined in animal models of sepsis induced by cecal ligation and puncture (CLP) or intraperitoneal injection of lipopolysaccharide (LPS) or zymosan...
April 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28342757/role-of-enzymatic-free-radical-scavengers-in-management-of-oxidative-stress-and-autoimmune-disorders
#4
REVIEW
Shikha Srivastava, Deependra Singh, Satish Patel, Manju R Singh
Autoimmune disorders are distinct with over production and accumulation of free radicals due to its undisclosed genesis. The cause of numerous disorders as cancer, arthritis, psoriasis, diabetes, alzheimer's, cardiovascular disease, Parkinson's, respiratory distress syndrome, colitis, crohn's, pulmonary fibrosis, obesity and ageing have been associated with immune dysfunction and oxidative stress. In an oxidative stress, reactive oxygen species generally provoke the series of oxidation at cellular level. The buildup of free radicals in turn triggers various inflammatory cells causing release of various inflammatory interleukins, cytokines, chemokines, and tumor necrosis factors which mediate signal transduction and transcription pathways as nuclear factor- kappa B (NF-κB), signal transducer and activator of transcription 3 (STAT3), hypoxia-inducible factor-1 (HIF-1α) and nuclear factor-erythroid 2-related factor (Nrf2)...
March 22, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28340426/porcine-parvovirus-induces-activation-of-nf-%C3%AE%C2%BAb-signaling-pathways-in-pk-15-cells-mediated-by-toll-like-receptors
#5
Liyan Cao, Jianfei Chen, Yanwu Wei, Hongyan Shi, Xin Zhang, Jing Yuan, Da Shi, Jianbo Liu, Xiangdong Zhu, Xin Wang, Shangjin Cui, Li Feng
Porcine parvovirus (PPV) is a pathogenic factor that primarily induces severe reproductive failure of pregnant swine, which results in extensive losses to the swine industry worldwide. In this study, a potential mechanism of PPV-induced activation of the nuclear transcription factor-kappaB (NF-κB) by infection in porcine kidney cells (PK-15) was elucidated for the first time. The subcellular localization of p65 analyzed by immunofluorescence assay (IFA) showed that PPV infection induced p65 translocation from the cytoplasm to the nucleus...
March 21, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28339909/il-17-and-cd40-ligand-synergistically-stimulate-the-chronicity-of-diabetic-nephropathy
#6
Huey-Liang Kuo, Chiu-Ching Huang, Tze-Yi Lin, Ching-Yuang Lin
Background.: Early stages of diabetic nephropathy (DN) are characterized by an influx of inflammatory cells. Interactions between infiltrating T cells and podocytes may play an important role in the ongoing inflammatory response and remodelling. The aim of this study was to explore the role of IL-17 and CD40 ligand (CD40L) in DN. Methods.: The study design involved a case series. Kidney biopsy samples of 69 patients with type 2 diabetes were assessed for the presence of CD4 +  IL-17 +  T cells...
March 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28339192/a-novel-exposure-system-termed-navetta-for-in-vitro-laminar-flow-electrodeposition-of-nanoaerosol-and-evaluation-of-immune-effects-in-human-lung-reporter-cells
#7
Evelien Frijns, Sandra Verstraelen, Linda Corinna Stoehr, Jo van Laer, An Jacobs, Jan Peters, Kristof Tirez, Matthew Boyles, Mark Geppert, Pierre Madl, Inge Nelissen, Albert Duschl, Martin Himly
A new prototype air-liquid interface (ALI) exposure system, a flatbed aerosol exposure chamber termed NAVETTA, was developed to investigate deposition of engineered nanoparticles (NPs) on cultured human lung A549 cells directly from the gas phase. This device mimics human lung cell exposure to NPs due to a low horizontal gas flow combined with cells exposed at the ALI. Electrostatic field assistance is applied to improve NP deposition efficiency. As proof-of-principle, cell viability and immune responses after short-term exposure to nano-copper oxide (CuO)-aerosol were determined...
March 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28337636/evodiamine-inhibits-zymosan-induced-inflammation-in-vitro-and-in-vivo-inactivation-of-nf-%C3%AE%C2%BAb-by-inhibiting-i%C3%AE%C2%BAb%C3%AE-phosphorylation
#8
Xia Fan, Jun-Yu Zhu, Yu Sun, Li Luo, Jun Yan, Xue Yang, Jing Yu, Wan-Qi Tang, Wei Ma, Hua-Ping Liang
Evodiamine (EVO), an important alkaloidal component extracted from the fruit of Evodiae fructus, has been known to possess anti-tumor, anti-inflammatory, anti-oxidative, and other therapeutic capabilities. In the present study, the effects of EVO on zymosan-induced inflammation and its underlying mechanism were investigated both in vitro and in vivo. Our results showed that EVO effectively suppressed both protein and mRNA expression of interleukin-1β, interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) in vitro...
March 23, 2017: Inflammation
https://www.readbyqxmd.com/read/28335587/neuronatin-is-associated-with-anti-inflammatory-role-in-the-white-adipose-tissue
#9
Hye In Ka, Sora Han, Ae Lee Jeong, Sunyi Lee, Hyo Jeong Yong, Ariundavaa Boldbaatar, Hyun Jeong Joo, Su Jung Soh, Ji Young Park, Jong-Seok Lim, Myung Sok Lee, Young Yang
Neuronatin (NNAT) is known to regulate ion channels during brain development and plays a role in maintaining the structure of the nervous system. A previous in silico analysis showed that Nnat was overexpressed in the adipose tissue of an obese rodent model relative to the wild-type. Therefore, the aim of the present study was to investigate the function of Nnat in the adipose tissue. Because obesity is known to systemically induce low-grade inflammation, the Nnat expression level was examined in the adipose tissue obtained from C57BL/6 mice administered lipopolysaccharide (LPS)...
March 24, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28335502/catechins-and-their-therapeutic-benefits-to-inflammatory-bowel-disease
#10
REVIEW
Fei-Yan Fan, Li-Xuan Sang, Min Jiang
Catechins are natural polyphenolic phytochemicals that exist in food and medicinal plants, such as tea, legume and rubiaceae. An increasing number of studies have associated the intake of catechins-rich foods with the prevention and treatment of chronic diseases in humans, such as inflammatory bowel disease (IBD). Some studies have demonstrated that catechins could significantly inhibit the excessive oxidative stress through direct or indirect antioxidant effects and promote the activation of the antioxidative substances such as glutathione peroxidases (GPO) and glutathione (GSH), reducing the oxidative damages to the colon...
March 19, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28334726/preparation-characterization-and-anti-ulcer-efficacy-of-sanguinarine-loaded-solid-lipid-nanoparticles
#11
Qing Sun, Weifeng Li, Huani Li, Xiumei Wang, Yu Wang, Xiaofeng Niu
AIM: This study was designed to develop sanguinarine-loaded solid lipid nanoparticles (SG-SLNs) and investigate its gastroprotective effect on ethanol-induced gastric mucosal lesions in mice. METHODS: SG-SLNs were prepared by high temperature melt-cool solidification method using glycerol monostearate as the lipid and a combination of lecithin with poloxamer 188 as the surfactants. Solid lipid nanoparticles (SLNs) were designed at varying lipid concentrations (5, 10, 15, and 20 mg/mL), surfactant mixture concentrations (6, 12, and 18 mg/mL), and drug contents (5, 10, 15, and 20 mg/mL) in "one factor at a time" fashion...
March 24, 2017: Pharmacology
https://www.readbyqxmd.com/read/28334048/hepatoprotective-effect-of-sitagliptin-against-methotrexate-induced-liver-toxicity
#12
Hany M Abo-Haded, Mohamed A Elkablawy, Zeyad Al-Johani, Osama Al-Ahmadi, Dina S El-Agamy
Sitagliptin is selective dipeptidyl peptidase-4 inhibitor (DPP4-I), used clinically as a new oral anti-diabetic agent. This study explored the underlying mechanisms of the hepatoprotective role of sitagliptin pretreatment against methotrexate (MTX) induced hepatotoxicity in mice. Forty mice were divided into four groups (10 mice each); control, MTX, and two sitagliptin groups (pretreated with sitagliptin 10 and 20 mg/kg/day, respectively) for five consecutive days prior to MTX injection. Results showed that MTX induced marked hepatic injury in the form of cloudy swelling, hydropic degeneration, apoptosis and focal necrosis in all hepatic zones...
2017: PloS One
https://www.readbyqxmd.com/read/28334039/l-arginine-attenuates-interleukin-1%C3%AE-il-1%C3%AE-induced-nuclear-factor-kappa-beta-nf-%C3%AE%C2%BAb-activation-in-caco-2-cells
#13
Qinghe Meng, Mitchell Cooney, Natesh Yepuri, Robert N Cooney
BACKGROUND: Specific nutrients like L-arginine (L-Arg) ameliorate intestinal inflammation, however the exact mechanisms of this effect are unclear. We hypothesized the anti-inflammatory effects of L-Arg require active transport and metabolism by inducible nitric oxide synthase (iNOS) to generate nitric oxide (NO). To test this hypothesis we examined the effects of L-Arg, L-Arg transport activity, NO production and iNOS inhibitor on IL-1β-mediated NF-κB-activation in Caco-2 cells. METHODS: Caco-2 cells were cultured, transfected with a NF-κB promoter luciferase vector, incubated ± L-Arg, ± IL-1β and luciferase activity was measured...
2017: PloS One
https://www.readbyqxmd.com/read/28333576/epstein-barr-virus-lytic-reactivation-activates-b-cells-polyclonally-and-induces-activation-induced-cytidine-deaminase-expression-a-mechanism-underlying-autoimmunity-and-its-contribution-to-graves-disease
#14
Keiko Nagata, Keisuke Kumata, Yuji Nakayama, Yukio Satoh, Hirotsugu Sugihara, Sayuri Hara, Michiko Matsushita, Satoshi Kuwamoto, Masako Kato, Ichiro Murakami, Kazuhiko Hayashi
Graves' disease is an autoimmune disease that results in and is the most common cause of hyperthyroidism, and the reactivation of persisting Epstein-Barr virus (EBV) in B lymphocytes induces the differentiation of host B cells into plasma cells. We previously reported that some EBV-infected B cells had thyrotropin receptor antibodies (TRAbs) as surface immunoglobulins (Igs), and EBV reactivation induced these TRAb+EBV+ cells to produce TRAbs. EBV reactivation induces Ig production from host B cells. The purpose of the present study was to examine total Ig productions from B cell culture fluids and to detect activation-induced cytidine deaminase (AID), nuclear factor kappa B (NF-κB), and EBV latent membrane protein (LMP) 1 in culture B cells during EBV reactivation induction and then we discussed the mechanisms of EBV reactivation-induced Ig production in relation to autoimmunity...
March 23, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28330776/topical-application-of-glycolic-acid-suppresses-the-uvb-induced-il-6-il-8-mcp-1-and-cox-2-inflammation-by-modulating-nf-%C3%AE%C2%BAb-signaling-pathway-in-keratinocytes-and-mice-skin
#15
Sheau-Chung Tang, Pei-Yun Liao, Sung-Jen Hung, Jheng-Siang Ge, Shiou-Mei Chen, Ji-Ching Lai, Yu-Ping Hsiao, Jen-Hung Yang
BACKGROUND: Glycolic acid (GA), commonly present in fruits, has been used to treat dermatological diseases. Extensive exposure to solar ultraviolet B (UVB) irradiation plays a crucial role in the induction of skin inflammation. The development of photo prevention from natural materials represents an effective strategy for skin keratinocytes. OBJECTIVE: The aim of this study was to investigate the molecular mechanisms underlying the glycolic acid (GA)-induced reduction of UVB-mediated inflammatory responses...
March 11, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28329018/a-unique-microrna-profile-in-end-stage-heart-failure-indicates-alterations-in-specific-cardiovascular-signaling-networks
#16
Sathyamangla V Naga Prasad, Manveen K Gupta, Zhong-Hui Duan, Venkata Suresh K Surampudi, Chang-Gong Liu, Ashwin Kotwal, Christine S Moravec, Randall C Starling, Dianne M Perez, Subha Sen, Qingyu Wu, Edward F Plow, Sadashiva Karnik
It is well established that the gene expression patterns are substantially altered in cardiac hypertrophy and heart failure, however, less is known about the reasons behind such global differences. MicroRNAs (miRNAs) are short non-coding RNAs that can target multiple molecules to regulate wide array of proteins in diverse pathways. The goal of the study was to profile alterations in miRNA expression using end-stage human heart failure samples with an aim to build signaling network pathways using predicted targets for the altered miRNA and to determine nodal molecules regulating individual networks...
2017: PloS One
https://www.readbyqxmd.com/read/28323005/macrophage-migration-inhibitory-factor-interacts-with-thioredoxin-interacting-protein-and-induces-nf-%C3%AE%C2%BAb-activity
#17
Mi Jeong Kim, Won Sam Kim, Dong Oh Kim, Jae-Eun Byun, Hangsak Huy, Soo Yun Lee, Hae Young Song, Young-Jun Park, Tae-Don Kim, Suk Ran Yoon, Eun-Ji Choi, Hyunjung Ha, Haiyoung Jung, Inpyo Choi
The nuclear factor kappa B (NF-κB) pathway is pivotal in controlling survival and apoptosis of cancer cells. Macrophage migration inhibitory factor (MIF), a cytokine that regulates the immune response and tumorigenesis under inflammatory conditions, is upregulated in various tumors. However, the intracellular functions of MIF are unclear. In this study, we found that MIF directly interacted with thioredoxin-interacting protein (TXNIP), a tumor suppressor and known inhibitor of NF-κB activity, and MIF significantly induced NF-κB activation...
March 17, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28322829/at-rvd1-modulates-the-activation-of-bronchial-epithelial-cells-induced-by-lipopolysaccharide-and-dermatophagoides-pteronyssinus
#18
Jhony Robison de Oliveira, Paulo Roberto da Silva, Alexandre de Paula Rogério
Bronchial epithelial cells are essential to airways homeostasis; however, they are also involved in exacerbation of airway inflammatory responses of patients with conditions such as asthma. Dermatophagoides pteronyssinus (Dp), the most important allergen, and lipopolysaccharide (LPS), both of which are present in house dust mites (HDM), can activate immune and structural cells (such as bronchial epithelial cells) and modulate the airway inflammation in asthma patients. Resolvin D1 (RvD1) and its epimer aspirin-triggered-resolvin D1 (AT-RvD1) are lipid mediators that are produced during the resolution of inflammation and demonstrate anti-inflammatory and pro-resolution effects in several experimental models including experimental models of allergic airway inflammation...
March 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28322778/down-regulation-of-cyclin-dependent-kinase-4-and-mapk-through-estrogen-receptor-mediated-cell-cycle-arrest-in-human-breast-cancer-induced-by-gold-nanoparticle-tagged-toxin-protein-nkct1
#19
Tanmoy Bhowmik, Antony Gomes
AIM: The aim of this study was to determine whether gold nanoparticles conjugated cytotoxic protein NKCT1 (GNP-NKCT1) acted through the estrogen receptor mediated pathway in MCF-7 cells and to establish the MAPK and PI3k/Akt signal transduction pathway. METHODS: Apoptosis was done by flow cytometry. BrdU incorporation and nuclear proliferating antigen was measured by flow cytometry. Wound healing assay along with matrigel chamber invasion and migration was done...
March 18, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28320516/l-f001-a-novel-multifunctional-rock-inhibitor-suppresses-neuroinflammation-in-vitro-and-in-vivo-involvement-of-nf-%C3%AE%C2%BAb-inhibition-and-nrf2-pathway-activation
#20
Jingkao Chen, Wei Yin, Yalin Tu, Shengnan Wang, Xiaohong Yang, Qiuhe Chen, Xiao Zhang, Yifan Han, Rongbiao Pi
Microglia and astrocytes are largely responsible for inflammatory injury in the brain of Alzheimer's disease (AD). Increasing evidence has indicated that Rho kinase (ROCK) plays an important role in the regulation of neuroinflammation. Previously, we synthesized a new chemical entity L-F001 and proved its potential inhibitory effects on ROCK and oxidative stress. Here, we investigated the anti-inflammatory effects and the molecular mechanisms of L-F001 in vitro and in vivo. L-F001 remarkably suppressed lipopolysaccharides (LPS)-elevated expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) as well as LPS-induced production of nitric oxide (NO), reactive oxygen species, interleukin-6 (IL-6) and tumor necreactive oxygen speciesis factor-α (TNF-α) in microglial BV-2 cells and in cultured astrocytes...
March 16, 2017: European Journal of Pharmacology
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