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https://www.readbyqxmd.com/read/28302032/anti-tumorigenic-effects-of-resveratrol-in-lung-cancer-cells-through-modulation-of-c-flip
#1
Clayton Wright, Anand Krishnan V Iyer, Juan S Yakisich, Neelam Azad
Resveratrol has been shown to have antioxidant and anti-proliferative properties in multiple cancer types. Here we demonstrate that H460 lung cancer cells are more susceptible to resveratrol treatment in comparison to human bronchial epithelial Beas-2B cells. Resveratrol decreases cell viability and proliferation, and induces significant apoptosis in H460 cells. The apoptosis observed was accompanied by an increase in hydrogen peroxide (H2O2) production, Bid, PARP and caspase 8 activation, and downregulation of pEGFR, pAkt, c-FLIP and NFkB protein expression...
March 15, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28300578/cellular-interactions-of-the-phosphorylated-form-of-akt-in-prostate-cancer
#2
Kai H Hammerich, Anna Frolov, Rile Li, Michael Ittmann, Gustavo E Ayala
Phospho-Akt (P-Akt1) promotes proliferation and increased survival in vitro and plays an important role in prostate cancer (PCa) progression as well as the prediction of the probability of recurrence. In this study, the goal was to demonstrate the involvement and impact of P-Akt1 on cellular interactions, biomechanisms and pathways in PCa. Tissue microarrays from 640 PCa patients were immunostained with various antibodies. Ki67 was used to measure proliferation index and Tunnel for apoptotic index. Increased expression of P-Akt1 was associated with an increased proliferation, but inversely correlated with apoptotic index...
March 11, 2017: Human Pathology
https://www.readbyqxmd.com/read/28277986/bardoxolone-methyl-inhibits-migration-and-metabolism-in-mcf7-cells
#3
Alaa Refaat, Chathyan Pararasa, Muhammed Arif, James E P Brown, Amtul Carmichael, Sameh S Ali, Hiroaki Sakurai, Helen R Griffiths
Bardoxolone-methyl (BAR) is reported to have anti-inflammatory, anti-proliferative and anti-fibrotic effects. BAR activates Nrf2 and may ameliorate oxidative stress through induction of antioxidant genes. However, off-target effects, probably concentration and NFkB-dependent, have limited the clinical use of BAR. Nrf2 regulates expression of antioxidant and mitochondrial genes and has been proposed as a target for both obesity and breast cancer. Therefore, we explored whether BAR can alter migration and proliferation in the MCF7 cell line and whether metabolic function is affected by BAR...
February 2017: Free Radical Research
https://www.readbyqxmd.com/read/28235804/nitric-oxide-synthase-trafficking-inducer-is-a-pleiotropic-regulator-of-endothelial-cell-function-and-signaling
#4
Shreeta Chakraborty, Rupasri Ain
Endothelial nitric oxide synthase (eNOS) and its bioactive product nitric oxide (NO) mediate many endothelial cell functions, including angiogenesis and vascular permeability. For example, vascular endothelial growth factor (VEGF)-mediated angiogenesis is inhibited upon reduction of NO bioactivity both in vitro and in vivo. Moreover, genetic disruption or pharmacological inhibition of eNOS attenuates angiogenesis during tissue repair, resulting in delayed wound closure. These observations emphasize that eNOS-derived NO can promote angiogenesis...
February 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28235799/inducible-microrna-214-contributes-to-the-suppression-of-nfkb-mediated-inflammatory-response-via-targeting-myd88-in-fish
#5
Qing Chu, Yuena Sun, Junxia Cui, Tianjun Xu
Upon recognition of bacterial pathogen by pattern recognition receptors, cells are activated to produce pro-inflammatory cytokines and type I IFN by multiple signaling pathways. Every step of the process must be precisely regulated to prevent dysregulation. MicroRNAs (miRNAs) have been shown to be important regulators with profound effects on inflammatory response. Nevertheless, the miRNA-mediated regulatory mechanism remains unclear in fish species. Here, we addressed the role of miiuy croaker miR-214 in the bacteria triggered inflammatory response...
February 24, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28215431/global-decrease-in-the-expression-of-signalling-pathways-genes-in-murine-uterus-during-preimplantation-pregnancy
#6
Katarzyna Buska, Anna Ewa Kedzierska, Anna Slawek, Anna Chelmonska-Soyta
Early preimplantation embryo-maternal communication is crucial for the establishment and development of pregnancy. Though the involvement of several candidate genes and proteins in this complex event has been described, the hierarchy of molecular networks governing this communication remains unknown. The primary objective of this study was to determine whether the presence of embryos in the uterine lumen stimulated or inhibited gene expression in the uterine tissue on day 3.5 post coitum. To answer this question, we investigated the gene expression of dedicated signal transduction pathways in the uterus of CD-1 mice during the preimplantation stage of pregnancy and compared this expression to mice with induced pseudopregnancy...
February 15, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28193316/polydatin-improves-the-developmental-competence-of-bovine-embryos-in-vitro-via-induction-of-sirtuin-1-sirt1
#7
Imran Khan, Sung Woo Kim, Kyung-Lim Lee, Seok-Hwan Song, Ayman Mesalam, M M R Chowdhury, Zia Uddin, Ki Hun Park, Il-Keun Kong
The aim of the present study was to investigate the beneficial effect of polydatin (PD), the glycoside form of resveratrol, on embryo development in vitro. Oocytes were aspirated from ovaries of Korean Hanwoo cows and cultured until Day 8 in a humidified atmosphere of 5% CO2 in air at 38.5°C. Protein and gene expression levels were determined through confocal microscopy and reverse transcription-polymerase chain reaction respectively, whereas the number of total and apoptotic cells in Day 8 blastocysts was determined using Hoechst 33342 staining and terminal deoxyribonucleotidyl transferase-mediated dUTP-digoxigenin nick end-labelling...
February 14, 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/28191908/il-1beta-induces-thymic-stromal-lymphopoietin-and-an-atopic-dermatitis-like-phenotype-in-reconstructed-healthy-human-epidermis
#8
Marine Bernard, Cédric Carrasco, Léo Laoubi, Béatrice Guiraud, Aurore Rozières, Catherine Goujon, Hélène Duplan, Sandrine Bessou-Touya, Jean-François Nicolas, Marc Vocanson, Marie-Florence Galliano
Atopic dermatitis (AD) is a common skin inflammatory disease characterized by the production of thymic stromal lymphopoietin (TSLP) and a marked TH 2 polarization. Recent studies suggest that IL-1β contributes to the development of AD skin inflammation. Here, we have investigated the impact of IL-1β signalling on the epidermal homeostasis of both healthy subjects and AD patient [with functional filaggrin (FLG) alleles] with particular attention to TSLP production and keratinocyte differentiation. In healthy reconstructed human epidermis (RHE), IL-1β promoted: (i) a robust secretion of TSLP in an NFkB-dependant manner and (ii) a significant decrease in the expression of filaggrin and other proteins of the epidermal differentiation complex...
February 13, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28185107/protective-impact-of-resveratrol-in-experimental-rat-model-of-hyperoxaluria
#9
Taylan Oksay, Sedat Yunusoğlu, Mustafa Calapoğlu, I Aydın Candan, İbrahim Onaran, Osman Ergün, Alper Özorak
PURPOSE: Resveratrol (RES) is a polyphenol with antioxidant, anti-inflammatory, and many other physiological effects on tissues. In the present study, the effect of resveratrol in hyperoxaluria driven nephrolithiasis/nephrocalcinosis is investigated. METHODS: Wistar-Albino rats of 250-300 g (male, n = 24) were included in the present study. The rats were randomized into three groups: Group 1 consisted of the controls (n = 8), Group 2 of hyperoxaluria (1% ethylene glycol (EG), n = 8), and Group 3 of the treatment (1% EG + 10 mg/kg of RES, n = 8) group...
February 9, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28177129/role-of-parp-activity-in-lung-cancer-induced-cachexia-effects-on-muscle-oxidative-stress-proteolysis-anabolic-markers-and-phenotype
#10
Alba Chacon-Cabrera, Mercè Mateu-Jimenez, Klaus Langohr, Clara Fermoselle, Elena García-Arumí, Antoni L Andreu, Jose Yelamos, Esther Barreiro
Strategies to treat cachexia are still at its infancy. Enhanced muscle protein breakdown and ubiquitin-proteasome system are common features of cachexia associated with chronic conditions including lung cancer (LC). Poly(ADP-ribose) polymerases (PARP), which play a major role in chromatin structure regulation, also underlie maintenance of muscle metabolism and body composition. We hypothesized that protein catabolism, proteolytic markers, muscle fiber phenotype, and muscle anabolism may improve in respiratory and limb muscles of LC-cachectic Parp-1-deficient (Parp-1(-/-) ) and Parp-2(-/-) mice...
February 8, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28165552/effects-of-very-low-calorie-diet-on-body-composition-metabolic-state-and-genes-expression-a-randomized-double-blind-placebo-controlled-trial
#11
G Merra, S Gratteri, A De Lorenzo, S Barrucco, M A Perrone, E Avolio, S Bernardini, M Marchetti, L Di Renzo
OBJECTIVE: Very low-calorie diets (VLCDs, < 800 kcal day-1) and Ketogenic diet (KD) are generally used as part of integrated intervention, medical monitoring and a program of lifestyle modification, to improve a multitude of clinical states. The effect of three different very low calories KD (VLCKD), with (VLCKD1) or without (VLCKD2,3) synthetic amino acid replacement of the 50% protein intake, were analyzed after weight loss. PATIENTS AND METHODS: The clinical study used a cross-over randomized double-blind placebo-controlled trial...
January 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28154177/glycosyltransferase-st6gal-i-protects-tumor-cells-against-serum-growth-factor-withdrawal-by-enhancing-survival-signaling-and-proliferative-potential
#12
Colleen M Britain, Kaitlyn A Dorsett, Susan L Bellis
A hallmark of cancer cells is the ability to survive and proliferate when challenged with stressors such as growth factor insufficiency. In the current study we report a novel glycosylation-dependent mechanism that protects tumor cells from serum growth factor withdrawal. Results herein suggest that the ST6Gal-I sialyltransferase, which is upregulated in numerous cancers, promotes the survival of serum-starved cells. Using ovarian and pancreatic cancer cell models with ST6Gal-I overexpression or knockdown, we find that serum-starved cells with high ST6Gal-I levels exhibit increased activation of pro-survival signaling molecules including pAkt, p-p70S6K and pNFkB...
January 30, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28152051/hemoglobin-induced-cell-trauma-indirectly-influences-endothelial-tlr9-activity-resulting-in-pulmonary-vascular-smooth-muscle-cell-activation
#13
Zoe Loomis, Paul Eigenberger, Katherine Redinius, Christina Lisk, Vijaya Karoor, Eva Nozik-Grayck, Scott K Ferguson, Kathryn Hassell, Rachelle Nuss, Kurt Stenmark, Paul Buehler, David C Irwin
It is now well established that both inherited and acquired forms of hemolytic disease can promote pulmonary vascular disease consequent of free hemoglobin (Hb) induced NO scavenging, elevations in reactive oxygen species and lipid peroxidation. It has recently been reported that oxidative stress can activate NFkB through a toll-like receptor 9 (TLR9) mediated pathway; further, TLR9 can be activated by either nuclear or mitochondrial DNA liberated by stress induced cellular trauma. We hypothesis that Hb induced lipid peroxidation and subsequent endothelial cell trauma is linked to TLR9 activation, resulting in IL-6 mediated pulmonary smooth muscle cell proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28138557/characterization-of-mirna-regulated-networks-hubs-of-signaling-and-biomarkers-in-obstruction-induced-bladder-dysfunction
#14
Ali Hashemi Gheinani, Bernhard Kiss, Felix Moltzahn, Irene Keller, Rémy Bruggmann, Hubert Rehrauer, Catharine Aquino Fournier, Fiona C Burkhard, Katia Monastyrskaya
Bladder outlet obstruction (BOO) induces significant organ remodeling, leading to lower urinary tract symptoms accompanied by urodynamic changes in bladder function. Here, we report mRNA and miRNA transcriptome sequencing of bladder samples from human patients with different urodynamically defined states of BOO. Patients' miRNA and mRNA expression profiles correlated with urodynamic findings. Validation of RNA sequencing results in an independent patient cohort identified combinations of 3 mRNAs (NRXN3, BMP7, UPK1A) and 3 miRNAs (miR-103a-3p, miR-10a-5p, miR-199a-3p) sufficient to discriminate between bladder functional states...
January 26, 2017: JCI Insight
https://www.readbyqxmd.com/read/28125551/o-003-the-brain-as-extraintestinal-ibd-manifestation-are-brain-and-cognitive-differences-in-pediatric-crohn-s-disease-associated-with-immune-gene-expression
#15
Christine Mrakotsky, Dunn W Augustine, Christopher Watson, James Canavan, Michael Rivkin, Scott Snapper
BACKGROUND: Structural brain changes in gray and white matter have been previously found in adults with Crohn's disease (CD). We have recently shown similar effects for pediatric CD in 2 separate studies (Mrakotsky et al., 2012, 2013, 2015), particularly for cortical and subcortical brain regions important for cognition, memory and emotion. Our prior data also revealed serum markers of inflammation and steroid therapy to be negatively associated with cortical thickness, subcortical volume, cognitive and school function, however, associations between brain structure and more detailed inflammatory profiles have not been studied...
February 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28110208/inflammatory-pathway-genes-associated-with-inter-individual-variability-in-the-trajectories-of-morning-and-evening-fatigue-in-patients-receiving-chemotherapy
#16
Fay Wright, Marilyn Hammer, Steven M Paul, Bradley E Aouizerat, Kord M Kober, Yvette P Conley, Bruce A Cooper, Laura B Dunn, Jon D Levine, Gail DEramo Melkus, Christine Miaskowski
Fatigue, a highly prevalent and distressing symptom during chemotherapy (CTX), demonstrates diurnal and interindividual variability in severity. Little is known about the associations between variations in genes involved in inflammatory processes and morning and evening fatigue severity during CTX. The purposes of this study, in a sample of oncology patients (N=543) with breast, gastrointestinal (GI), gynecological (GYN), or lung cancer who received two cycles of CTX, were to determine whether variations in genes involved in inflammatory processes were associated with inter-individual variability in initial levels as well as in the trajectories of morning and evening fatigue...
March 2017: Cytokine
https://www.readbyqxmd.com/read/28106131/hif-1%C3%AE-induction-during-reperfusion-avoids-maladaptive-repair-after-renal-ischemia-reperfusion-involving-mir127-3p
#17
Elisa Conde, Sara Giménez-Moyano, Laura Martín-Gómez, Macarena Rodríguez, M Edurne Ramos, Elia Aguado-Fraile, Ignacio Blanco-Sanchez, Ana Saiz, María Laura García-Bermejo
Ischemia/reperfusion (I/R) leads to Acute Kidney Injury. HIF-1α is a key factor during organ response to I/R. We previously demonstrated that HIF-1α is induced during renal reperfusion, after ischemia. Here we investigate the role of HIF-1α and the HIF-1α dependent mechanisms in renal repair after ischemia. By interference of HIF-1α in a rat model of renal I/R, we observed loss of expression and mis-localization of e-cadherin and induction of α-SMA, MMP-13, TGFβ, and collagen I. Moreover, we demonstrate that HIF-1α inhibition promotes renal cell infiltrates by inducing IL-1β, TNF-α, MCP-1 and VCAM-1, through NFkB activity...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28104448/metformin-and-low-dose-radiation-modulates-cisplatin-induced-oxidative-injury-in-rat-via-ppar-%C3%AE-and-mapk-pathways
#18
Heba H Mansour, Shereen M El Kiki, Shereen M Galal
Cisplatin (CIS) is a chemotherapeutic agent used for therapy of many tumors and has been limited by its toxicity. The aim of this study was to investigate the role of Peroxisome proliferator-activated receptor-gamma (PPAR-γ), mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B(NFkB) in the pathogenesis of hepatic damage induced by CIS, and investigated the modulatory effect of metformin (MET) and/or low dose gamma radiation (LDR) on CIS-induced hepatotoxicity in rats. CIS(7.5 mg/kg, i.p.) hepatotoxicity was evidenced by alteration of serum hepatic indices (ALT and AST) accompanied with decreased hepatic PPAR-γ, superoxide dismutase (SOD) activities and reduced glutathione (GSH) content, whereas the levels of malondialdehyde (MDA), total nitrate/nitrite (NOx) and NFkB significantly increased as well as MAPK activity compared with the control, MET and LDR groups...
January 16, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28100091/the-effects-of-polyethylenimine-dna-nanoparticle-on-transcript-levels-of-apoptosis-related-genes
#19
Elham Pishavar, Mohammad Shafiei, Soghra Mehri, Mohammad Ramezani, Khalil Abnous
CONTEXT: Polyethylenimine (PEI) is a cationic polymer commonly used in gene transfer. Although numerous investigations have indicated that PEI can induce apoptosis/necrosis but the mechanism of its cytotoxicity is still poorly understood. OBJECTIVE: The purpose of this study was to investigate the effects of PEI/DNA complexes on the expression of apoptotic genes in human colon adenocarcinoma cells (HT29). METHODS: HT29 cells were exposed to PEI/DNA complex (C/P = 0...
January 18, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/28096576/role-of-edaravone-in-managemant-of-septic-peritonitis
#20
Ghada Fouad Elbaradey, Nagat Sayed Elshmaa, Hossam Hodeib
BACKGROUND AND AIMS: Sepsis is a complex rapidly progressive infectious disease that remain a major cause of morbidity and mortality in surgical patients and trauma victims. Edaravone a novel free radical scavenger was approved in 2001 in Japan for treatment of acute cerebral and myocardial infarction. Hence, in this work we attempt to evaluate its role in cases of septic peritonitis (SP). MATERIAL AND METHODS: This is a prospective randomized observer-blinded study carried out in surgical Intensive Care Unit (ICU) after approval by Hospital Ethical Committee...
October 2016: Journal of Anaesthesiology, Clinical Pharmacology
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