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https://www.readbyqxmd.com/read/29326084/impact-of-intracellular-ionic-strength-on-dimer-binding-in-the-nf-kb-inducing-kinase
#1
Michael R Jones, Joshua Yue, Angela K Wilson
Improper signaling of the nuclear factor-κB (NF-κB) pathway plays a critical role in many inflammatory disease states including cancer, stroke, and viral infections. Although the signaling pathways are known, how these molecular mechanisms respond to changes in the intracellular microenvironment such as pH, ionic strength, and temperature, remains elusive. Molecular dynamics simulations were employed to differentiate the structural dynamics of the NF-kB Inducing Kinase (NIK), a protein kinase responsible for invoking the non-canonical NF-κB pathway, in its native and mutant form, and in the absence and presence of salt concentration in efforts to probe whether changes in the ionic environment stabilize or destabilize the NIK dimer...
January 8, 2018: Journal of Structural Biology
https://www.readbyqxmd.com/read/29323204/calcium-phosphate-complex-increased-during-subchondral-bone-remodeling-affects-earlystage-osteoarthritis
#2
Youn-Kwan Jung, Min-Su Han, Hye-Ri Park, Eun-Ju Lee, Ji-Ae Jang, Gun-Woo Kim, Sun-Young Lee, DaeWon Moon, Seungwoo Han
An activation of osteoclasts and subchondral bone remodeling is a major histologic feature of early-stage osteoarthritis (OA), which can be accompanied by an increase of calcium (Ca) and phosphate (Pi) level in the subchondral milieu. Considering articular cartilage gets most of nutrition from subchondral bone by diffusion, these micro-environmental changes in subchondral bone can affect the physiology of articular chondrocytes. Here, we have shown that Ca is increased and co-localized with Pi in articular cartilage of early-stage OA...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29299971/the-role-of-the-fas-fasl-signaling-pathway-in-environmental-toxicant-induced-testicular-cell-apoptosis-an-update
#3
Mei Wang, Ping Su
The Fas/FasL signaling pathway is one of the major pathways that regulate apoptosis. Increasing studies have shown that the activation of the Fas/FasL signaling pathway is closely associated with testicular cell apoptosis. However, the mechanism involved is still unclear. We discuss recent findings regarding the molecular mechanisms by which environmental toxicants induce testicular pathology via Fas/FasL signaling. These findings suggest that Fas/FasL signaling is employed to impact the sensitivity (a response to external factors) of germ cells, disrupt steroidogenic hormone and cytokine metabolism mediated by Sertoli cells, and elicit the activation of NFAT (nuclear factor of activated T-cells) in Leydig cell apoptosis...
January 4, 2018: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/29298131/a-systematic-review-of-p53-regulation-of-oxidative-stress-in-skeletal-muscle
#4
Kaitlyn Beyfuss, David A Hood
BACKGROUND: p53 is a tumor suppressor protein involved in regulating a wide array of signaling pathways. The role of p53 in the cell is determined by the type of imposed oxidative stress, its intensity and duration. The last decade of research has unravelled a dual nature in the function of p53 in mediating the oxidative stress burden. However, this is dependent on the specific properties of the applied stress and thus requires further analysis. METHODS: A systematic review was performed following an electronic search of Pubmed, Google Scholar, and ScienceDirect databases...
January 3, 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29288825/inhibitory-effects-of-aconiti-lateralis-radix-preparata-on-chronic-intermittent-cold-induced-inflammation-in-the-mouse-hypothalamus
#5
Wonnam Kim, Wonil Lee, Jin Gyu Choi, In Gyoung Ju, Yun-Kyung Kim, Tae Hee Lee, Myung Sook Oh
ETHNOPHARMACOLOGICAL RELEVANCE: Aconiti Lateralis Radix Preparata (AR) is the most frequently used herb to generate heat and treat symptoms associated with coldness in Asia. AIMS OF THE STUDY: The hypothalamus is one of the master regulators to maintain constant core body temperature. Chronic exposure to cold stress disturbs homeostatic regulation, gradually resulting in hypothalamic inflammation. This study investigate the effects of AR, on the chronic intermittent cold (CIC)-induced release of pro-inflammatory signaling molecules in the mouse hypothalamus...
December 27, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29285127/glutamine-ameliorates-lipopolysaccharide-induced-cardiac-dysfunction-by-regulating-the-toll-like-receptor-4-mitogen-activated-protein-kinase-nuclear-factor-kb-signaling-pathway
#6
Wen-Bin Zhang, Hai-Yue Zhang, Qian Zhang, Fang-Zhou Jiao, Hong Zhang, Lu-Wen Wang, Zuo-Jiong Gong
The inflammatory response of sepsis induced by lipopolysaccharide (LPS) may result in irreversible cardiac dysfunction. Glutamine (GLN) has a multitude of pharmacological effects, including anti-inflammatory abilities. Previous studies have reported that GLN attenuated LPS-induced acute lung injury and intestinal mucosal injury. The present study investigated whether GLN exerts potential protective effects on LPS-induced cardiac dysfunction. Male Sprague-Dawley rats were divided into three groups (15 rats per group), including the control (saline-treated), LPS and LPS+GLN groups...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29245931/silibinin-protects-against-osteoarthritis-through-inhibiting-the-inflammatory-response-and-cartilage-matrix-degradation-in-vitro-and-in-vivo
#7
Wenhao Zheng, Zhenhua Feng, Yiting Lou, Chunhui Chen, Chuanxu Zhang, Zhenyu Tao, Hang Li, Liang Cheng, Xiaozhou Ying
Osteoarthritis (OA) is a degenerative joint disease characterized by cartilage degradation and inflammation. Silibinin, a polyphenolic flavonoid derived from fruits and seeds of Silybum marianum, has been reported to possess various potent beneficial biological effects, such as antioxidant, anti-cancer, hepatoprotective and anti-inflammatory activities. However, the anti-inflammatory effects of silibinin on OA have not been reported. This study aimed to assess the effects of silibinin on OA both in vitro and in vivo...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228978/asiatic-acid-attenuates-methamphetamine-induced-neuroinflammation-and-neurotoxicity-through-blocking-of-nf-kb-stat3-erk-and-mitochondria-mediated-apoptosis-pathway
#8
Ji-Hyun Park, Young Ho Seo, Jung-Hee Jang, Chul-Ho Jeong, Sooyeun Lee, Byoungduck Park
BACKGROUND: Methamphetamine (METH) is a commonly abused drug that may result in neurotoxic effects. Recent studies have suggested that involvement of neuroinflammatory processes in brain dysfunction is induced by misuse of this drug. However, the mechanism underlying METH-induced inflammation and neurotoxicity in neurons is still unclear. In this study, we investigated whether asiatic acid (AA) effected METH-mediated neuroinflammation and neurotoxicity in dopaminergic neuronal cells. And we further determined whether the effect involved in the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and signal transducer and activator of transcription (STAT)3 and extracellular signal-regulated kinase (ERK) pathway...
December 11, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29211284/effects-of-triethylene-glycol-dimethacrylate-tegdma-on-the-odontoclastic-differentiation-ability-of-human-dental-pulp-cells
#9
Zeynep Öncel Torun, Deniz Torun, Barış Baykal, Ali Öztuna, Fatih Yeşildal, Ferit Avcu
OBJECTIVES: The primary purpose of this study was to examine the effects of triethylene glycol dimethacrylate (TEGDMA) on odontoclastic differentiation in the dental pulp tissue. MATERIAL AND METHODS: The effects of different TEGDMA dosages on the odontoclastic differentiation capability of dental pulp cells were analyzed in vitro using the following methodologies: i) flow cytometry and tartrate-resistant acid phosphatase (TRAP) staining; ii) apoptotic effects using Annexin V staining; iii) mRNA expression of osteoprotegerin (OPG) and receptor activator of nuclear factor (NF)-kB ligand (RANKL) genes by quantitative Real-time PCR (qRT-PCR); and iv) OPG and RANKL protein expression by enzyme-linked immunosorbent assay (ELISA)...
November 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29208272/biosynthesis-of-cerium-oxide-nanoparticles-and-their-effect-on-lipopolysaccharide-lps-induced-sepsis-mortality-and-associated-hepatic-dysfunction-in-male-sprague-dawley-rats
#10
Guoqiang Chen, Yunfei Xu
The fetal/life challenging Sepsis is an urgent medical disaster which have developed "blood poisoning". The sepsis is one of the disorders of organs which cause death in patients. The investigational models that mimicchemical change of sepsis in human bodywereessential. We have synthesized CeO2 NPs using eco-friendly method using plant extract. The characterization of synthesized CeO2 NPs was studied using UV-Vis, FTIR, XRD, SEM, EDX and TEM analysis. The results were confirmed that the synthesized CeO2 was in nano size with spherical shape...
February 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29198328/the-role-of-nuclear-factor-kappa-b-signaling-in-human-cervical-cancer
#11
REVIEW
Sam Tilborghs, Jerome Corthouts, Yannick Verhoeven, David Arias, Christian Rolfo, Xuan Bich Trinh, Peter A van Dam
Background The Nuclear Factor kappaB (NF-kB) family consists of transcription factors that play a complex and essential role in the regulation of immune responses and inflammation. NF-kB has recently generated considerable interest as it has been implicated in human cancer initiation, progression and resistance to treatment. In the present comprehensive review the different aspects of NF-kB signaling in the carcinogenesis of cancer of the uterine cervix are discussed. NF-kB functions as part of a network, which determines the pattern of its effects on the expression of several other genes (such as crosstalks with reactive oxygen species, p53, STAT3 and miRNAS) and thus its function...
December 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29197930/the-ppar%C3%AE-dependent-rodent-liver-tumor-response-is-not-relevant-to-humans-addressing-misconceptions
#12
REVIEW
J Christopher Corton, Jeffrey M Peters, James E Klaunig
A number of industrial chemicals and therapeutic agents cause liver tumors in rats and mice by activating the nuclear receptor peroxisome proliferator-activated receptor α (PPARα). The molecular and cellular events by which PPARα activators induce rodent hepatocarcinogenesis have been extensively studied elucidating a number of consistent mechanistic changes linked to the increased incidence of liver neoplasms. The weight of evidence relevant to the hypothesized mode of action (MOA) for PPARα activator-induced rodent hepatocarcinogenesis is summarized here...
December 2, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/29196051/lycium-barbarum-polysaccharides-improve-ccl4-induced-liver-fibrosis-inflammatory-response-and-tlrs-nf-kb-signaling-pathway-expression-in-wistar-rats
#13
Fang Gan, Qing Liu, Yunhuan Liu, Da Huang, Cuiling Pan, Suquan Song, Kehe Huang
Lycium barbarum polysaccharides (LBPs) have multiple biological and pharmacological functions, including antioxidant, anti-inflammatory and anticancer activities. This research was conducted to evaluate whether LBPs could alleviate carbon tetrachloride (CCl4)-induced liver fibrosis and the underlying signaling pathway mechanism. Fifty male wistar rats were randomly allocated to five groups (n=10): control, CCl4 and CCl4 with 400, 800 or 1600mg/kg LBPs, respectively. Each wistar rat from each group was used for blood and tissue collections at the end of experiment...
November 28, 2017: Life Sciences
https://www.readbyqxmd.com/read/29194852/the-role-of-sclerostin-dickkopf-1-and-receptor-activator-of-nuclear-factor-kb-ligand-osteoprotegerin-signalling-pathways-in-the-development-of-osteoporosis-in-patients-with-haemophilia-a-and-b-a-cross-sectional-study
#14
P Anagnostis, S Vakalopoulou, D Christoulas, S A Paschou, A Papatheodorou, V Garipidou, P Kokkoris, E Terpos
AIM: Haemophilia A and B are associated with reduced bone mineral density (BMD). The aim of this study was to assess circulating sclerostin and dickkopf-1 (Dkk-1), (inhibitors of osteoblastic differentiation), as well as the receptor activator of nuclear factor kB ligand (RANKL)/osteoprotegerin (OPG) system (the major regulator of osteoclastogenesis), in patients with haemophilia (PWH), their possible correlations with clinical risk factors and the effect of ibandronate on these markers...
December 1, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29192367/intermedin1-53-protects-cardiac-fibroblasts-by-inhibiting-nlrp3-inflammasome-activation-during-sepsis
#15
Di Wu, Lin Shi, Pengyang Li, Xianqiang Ni, Jinsheng Zhang, Qing Zhu, Yongfen Qi, Bin Wang
Sepsis is a disease that occurs as a result of systemic inflammatory response syndrome (SIRS) in response to an infection, contributing to multiple organ dysfunction and a high mortality rate. Interleukin-lβ (IL-1β) is a cytokine that plays critical roles in inflammation and cardiac dysfunction during severe sepsis. Intermedin1-53 (IMD1-53) has been recently discovered to possess potential endogenous anti-inflammatory and strong cardiovascular protective effects. To investigate whether IMD1-53 can inhibit the NLRP3/caspase-1/IL-1β pathway to alleviate cardiac injury and rescue heart function, sepsis was induced in vivo by caecal ligation and puncture (CLP) surgery, and lipopolysaccharides were used as septic stressors for cardiac fibroblasts (CFs) in vitro...
December 1, 2017: Inflammation
https://www.readbyqxmd.com/read/29187201/sirt1-interaction-with-active-smad2-modulates-transforming-growth-factor-%C3%AE-regulated-transcription
#16
Eva María García-Vizcaíno, Sergio Liarte, José Luis Alonso-Romero, Francisco José Nicolás
BACKGROUND: The simplicity of Transforming Growth Factor ß (TGFβ) signaling pathway, linear and non-amplified, hardly sustains its variety of responses. This is often justified by the complex regulation showed by Smad proteins, TGFβ signaling intracellular transducers, object of post-translational modifications that modulate TGFβ-dependent transcription. Protein acetylation is emerging as a compelling mechanism affecting the activities of significant transcription factors, including p53, FOXO or NF-kB...
November 29, 2017: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/29185027/identification-of-genes-associated-with-susceptibility-to-mycobacterium-avium-ssp-paratuberculosis-map-tissue-infection-in-holstein-cattle-using-gene-set-enrichment-analysis-snp
#17
J N Kiser, M Neupane, S N White, H L Neibergs
Multiple genome-wide association analyses have investigated susceptibility to bovine paratuberculosis, but few loci have been identified across independent cattle populations. A SNP-based gene set enrichment analysis (GSEA-SNP) allows expanded identification of genes with moderate effects on a trait through the enrichment of gene sets instead of identifying only few loci with large effects. Therefore, the objective of this study was to identify genes that were moderately associated with Mycobacterium avium ssp...
November 28, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/29183030/emodin-inhibits-atp-induced-proliferation-and-migration-by-suppressing-p2y-receptors-in-human-lung-adenocarcinoma-cells
#18
Xia Wang, Long Li, Ruijuan Guan, Danian Zhu, Nana Song, Linlin Shen
BACKGROUND/AIMS: Extracellular ATP performs multiple important functions via activation of P2 receptors on the cell surface. P2Y receptors play critical roles in ATP evoked response in human lung adenocarcinoma cells (A549 cells). Emodin is an anthraquinone derivative originally isolated from Chinese rhubarb, possesses anticancer properties. In this study we examined the inhibiting effects of emodin on proliferation, migration and epithelial-mesenchymal transition (EMT) by suppressing P2Y receptors-dependent Ca2+ increase and nuclear factor-κB (NF-KB) signaling in A549 cells...
November 29, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29179438/valproate-hampers-podocyte-acquisition-of-immune-phenotypes-via-intercepting-the-gsk3%C3%AE-facilitated-nfkb-activation
#19
Pei Wang, Sijie Zhou, Yan Ge, Minglei Lu, Zhangsuo Liu, Rujun Gong
Glomerular podocytes are able to transdifferentiate under disease conditions, acquire de novo immune phenotypes and behave as immunocompetent cells, like phagocytes or antigen-presenting cells. Upon stimulation with lipopolysaccharide (LPS), a prototypical pathogen-associated molecular pattern, podocytes demonstrated de novo expression of a variety of NFkB-dependent immune molecules that are pivotal for immune response, including major histocompatibility complex (MHC) class II, costimulatory molecule CD80, lysosomal protease cathepsin L as well as CC chemokine ligand 2 and 5, ultimately resulting in podocyte dysfunction, characterized by cellular shrinkage, a spindle-like or asterlike cell shape and impairment of actin cytoskeleton integrity...
October 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/29175022/biology-and-treatment-of-myeloma-related-bone-disease
#20
Evangelos Terpos, Dimitrios Christoulas, Maria Gavriatopoulou
Myeloma bone disease (MBD) is the most common complication of multiple myeloma (MM), resulting in skeleton-related events (SREs) such as severe bone pain, pathologic fractures, vertebral collapse, hypercalcemia, and spinal cord compression that cause significant morbidity and mortality. It is due to an increased activity of osteoclasts coupled to the suppressed bone formation by osteoblasts. Novel molecules and pathways that are implicated in osteoclast activation and osteoblast inhibition have recently been described, including the receptor activator of nuclear factor-kB ligand/osteoprotegerin pathway, activin-A and the wingless-type signaling inhibitors, dickkopf-1 (DKK-1) and sclerostin...
November 23, 2017: Metabolism: Clinical and Experimental
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