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https://www.readbyqxmd.com/read/29687464/protective-effects-of-sea-cucumber-holothuria-atra-extract-on-testicular-dysfunction-induced-by-immune-suppressant-drugs-in-wistar-rats
#1
D Y Saad, M M Soliman, A A Mohamed, G B Youssef
The current study was aimed to evaluate the protective effect of Holothurian atra (HA) extract; naturally occurring marine resource, against methotrexate (MTX) induced testicular dysfunction. Mature rats received either MTX (20 mg/kg, intraperitoneally) or saline on the 7th day of experiment al design. Seven days prior and after MTX-injection, rats received HA at dose of 300 mg/kg intragastrically (HA + MTX group; HA group alone). Serum was extracted and testicular tissues were examined for the changes in serum biochemistry (liver & kidney biomarkers, testicular hormones and antioxidants), molecular and histopthological alterations using RT-PCR and immunohistochemistry...
April 23, 2018: Andrologia
https://www.readbyqxmd.com/read/29682743/the-selective-mineralcorticoid-receptor-mr-antagonist-eplerenon-prevents-decompensation-of-liver-cirrhosis
#2
Barbara Schreier, Anja Wolf, Stefanie Hammer, Sabine Pohl, Sigrid Mildenberger, Sindy Rabe, Michael Gekle, Alexander Zipprich
BACKGROUND & AIMS: The MR contributes to fibrosis in various tissues and MR antagonists, like eplerenone, are used to prevent fibrosis. The role of MR antagonists for hepatic fibrosis and cirrhosis is unknown. Here, we investigated the role of MR and eplerenone in cirrhosis development. METHODS: Liver fibrosis (5 weeks), cirrhosis without (8w) and with ascites (12w) were induced by CCl4 in rats and comprehensively analyzed. In addition the effect of eplerenone (MR antagonist) on the development of cirrhosis with ascites was assessed...
April 22, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29679925/tocotrienol-rich-fraction-supplementation-reduces-hyperglycemia-induced-skeletal-muscle-damage-through-regulation-of-insulin-signaling-and-oxidative-stress-in-type-2-diabetic-mice
#3
Heaji Lee, Yunsook Lim
Chronic hyperglycemia induces impairment of muscle growth and development of diabetes mellitus (DM). Since skeletal muscle is the major site for disposal of ingested glucose, impaired glucose metabolism causes imbalance between protein synthesis and degradation which adversely affects physical mobility. In this study, we investigated the effect of tocotrienol-rich fraction (TRF) supplementation on skeletal muscle damage in diabetic mice. Diabetes was induced by a high-fat diet with streptozotocin (STZ) injection (100 mg/kg) in male C57BL/6J mice...
March 21, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29679641/ethanol-induced-cardiomyocyte-toxicity-involves-autophagy-nfkb-transcription-factor
#4
Jessica Maiuolo, Alessia Maretta, Micaela Gliozzi, Vincenzo Musolino, Cristina Carresi, Francesca Bosco, Rocco Mollace, Federica Scarano, Ernesto Palma, Miriam Scicchitano, Saverio Nucera, Domenico Sergi, Saverio Muscoli, Santo Gratteri, Carolina Muscoli, Vincenzo Mollace
Chronic ethanol (EtOH) consumption causes early detrimental consequences in many tissues including the myocardium, though the molecular mechanisms leading to the alcoholic cardiomyopathy (ACM) still remain to be elucidated. Here, we studied several biomolecular changes occurring in cardiomyoblasts after their exposure to sublethal concentrations of EtOH and the potential synergistic effect with methylmercury (MM) or doxorubicin (DOXO), which are known to produce direct myocardial dysfunction. In addition, the possible role of autophagic responses and Nuclear Factor kappa-B (NFkB) modulation in early post-alcoholic myocardial damage has been investigated...
April 18, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29678603/chebulagic-acid-chebulinic-acid-and-gallic-acid-the-active-principles-of-triphala-inhibit-tnf%C3%AE-induced-pro-angiogenic-and-pro-inflammatory-activities-in-retinal-capillary-endothelial-cells-by-inhibiting-p38-erk-and-nfkb-phosphorylation
#5
Sivasankar Shanmuganathan, Narayanasamy Angayarkanni
Tumor necrosis factor-α (TNFα) a pleiotropic cytokine induces pro-inflammatory and pro-angiogenic changes in conditions such as diabetic retinopathy (DR) and neovascular age related macular degeneration (NV-AMD). Hence, inhibition of TNFα mediated changes can benefit the management of DR and NV-AMD. Triphala, an ayurvedic herbal preparation is known to have immunomodulatry functions. In this study we evaluated the alcoholic extract of triphala (AlE) and its compounds Chebulagic acid (CA), Chebulinic acid (CI) and Gallic acid (GA) for their anti-TNFα activity...
April 17, 2018: Vascular Pharmacology
https://www.readbyqxmd.com/read/29667554/establishment-of-novel-reporter-cells-stably-maintaining-transcription-factor-driven-human-secreted-alkaline-phosphatase-expression
#6
Riho Kurata, Asuka Kumagai, Xiaofeng Cui, Masamitsu Harada, Jun Nagai, Yasuhiro Yoshida, Kei-Ichi Ozaki, Yoshimasa Tanaka, Tomo Yonezawa
BACKGROUND: Transcriptional regulation is very important and pivotal function in myriad biological responses. Thus, methods to determine transcriptional activity are required in not only basic medical research but also drug discovery. We established novel reporter constructs using human secreted embryonic alkaline phosphatase (SEAP) and Epstein-Barr virus nuclear antigen (EBNA) 1, which can maintain constructs synchronized to host cell replication. METHODS: We established nuclear factor-kappa B (NFkB) or interferon regulatory factor (IRF) driven SEAP expression constructs and then, introduced them into culture cells...
April 17, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29660434/the-beclomethasone-anti-inflammatory-effect-occurs-in-cell-mediator-dependent-manner-and-is-additively-enhanced-by-formoterol-nfkb-p38-pka-analysis
#7
Silvana Cianchetti, Cristina Cardini, Alessandro Corti, Marta Menegazzi, Elena Darra, Eleonora Ingrassia, Alfonso Pompella, Pierluigi Paggiaro
AIMS: Beclomethasone/formoterol (BDP/FOR) has been reported to be more effective than its separate components in airway disease control and in airway inflammation improvement. However, BDP/FOR effects on cytokine-induced inflammation in structural cells have not been described and whether these effects occur in a cell- and mediator-dependent manner has not been fully elucidated. We sought to evaluate BDP and/or FOR effects on endothelial ICAM-1, E-selectin, IL-8 and on bronchial epithelial ICAM-1 and IL-8...
April 13, 2018: Life Sciences
https://www.readbyqxmd.com/read/29656494/oxidized-ldl-phagocytosis-during-foam-cell-formation-in-atherosclerotic-plaques-relies-on-a-pld2-cd36-functional-interdependence
#8
Ramya Ganesan, Karen M Henkels, Lucile E Wrenshall, Yasunori Kanaho, Gilbert Di Paolo, Michael A Frohman, Julian Gomez-Cambronero
The uptake of cholesterol carried by low-density lipoprotein (LDL) is tightly controlled in the body. Macrophages are not well suited to counteract the cellular consequences of excess cholesterol leading to their transformation into "foam cells," an early step in vascular plaque formation. We have uncovered and characterized a novel mechanism involving phospholipase D (PLD) in foam cell formation. Utilizing bone marrow-derived macrophages from genetically PLD deficient mice, we demonstrate that PLD2 (but not PLD1)-null macrophages cannot fully phagocytose aggregated oxidized LDL (Agg-Ox-LDL), which was phenocopied with a PLD2-selective inhibitor...
April 14, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29656114/synergistic-action-of-dual-igf1-r-and-mek-inhibition-sensitizes-childhood-acute-lymphoblastic-leukaemia-all-cells-to-cytotoxic-agents-and-involves-down-regulation-of-stat6-and-pdap1
#9
Victoria J Weston, Wenbin Wei, Tatjana Stankovic, Pamela Kearns
Heterogeneous upregulation of multiple pro-survival pathways underlies resistance to damage-induced apoptosis in acute lymphoblastic leukaemia (ALL) cells despite normal p53 responses. Here we identify the dual combination of IGF1/R and MEK inhibition using AG1024 and U0126 can sensitise apoptosis-resistant ALL cells to ionising radiation (IR)-induced DNA damage irrespective of effect of single pathway inhibition in vitro. This AG1024+U0126 combination also significantly potentiates the ability of the core chemotherapy compounds vincristine, dexamethasone and daunorubicin to kill ALL cells in vitro...
April 12, 2018: Experimental Hematology
https://www.readbyqxmd.com/read/29651966/specific-cytostatic-and-cytotoxic-effect-of-dihydrochelerythrine-in-glioblastoma-cells-role-of-nf-kb-b-catenin-and-stat3-il-6-pathways
#10
Tereza Cristina Costa Silva, Noelio de Jesus Menezes-Filho, Giselle Pinto de Faria Lopes, Diego Madureira de Oliveira, Ezequiel Pereira, Bruno Penas Seara Pitanga, Eudes S Velozo, Songeli Menezes Freire, Jorge Clarencio de Souza Andrade, Helena Lobo Borges, Stevens Kastrup Rehen, Vivaldo Moura-Neto, Silvia Lima Costa
A glioblastoma is a primary CNS tumor that is more aggressive and lethal than other brain tumors. Its location, rapid proliferation, invasive growth, angiogenesis and immunosuppression are the main factors that limit its treatment, making it a major challenge to neuro-oncology. OBJECTIVE: This study investigated the in vitro effects of the alkaloid dihydrochelerythrine (DHC), which is extracted from Zanthoxylum stelligerum, on the viability, proliferation, cell death and b-catenin, NFkB, STAT3/pSTAT3 and interleukins roles...
April 12, 2018: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29644893/activation-of-the-nfkb-pathway-alters-the-phenotype-of-mscs-in-the-tracheal-aspirates-of-preterm-infants-with-severe-bpd
#11
Tobias Reicherzer, Susanne Häffner, Tayyab Shahzad, Judith Gronbach, Josef Mysliwietz, Christoph Huebener, Uwe Hasbargen, Jan Gertheiss, Andreas Schulze, Saverio Bellusci, Rory E Morty, Anne Hilgendorff, Harald Ehrhardt
Mesenchymal stromal cells (MSCs) are released into the airways of preterm infants following lung injury. These cells display a pro-inflammatory phenotype and are associated with development of severe bronchopulmonary dysplasia (BPD). We aimed to characterize the functional properties of MSCs obtained from tracheal aspirates of 50 preterm infants who required invasive ventilation. Samples were separated by disease severity. The increased proliferative capacity of MSCs was associated with longer duration of mechanical ventilation and higher severity of BPD...
April 12, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29644711/outlining-involvement-of-stem-cell-program-in-regulation-of-o6-methylguanine-dna-methyltransferase-and-development-of-temozolomide-resistance-in-glioblastoma-an-editorial-highlight-for-transcriptional-control-of-o-6-methylguanine-dna-methyltransferase-expression
#12
EDITORIAL
Anastasia Chumakova, Justin D Lathia
Glioblastoma is a malignant brain tumor that inevitably develops resistance to standard of care drug temozolomide (TMZ) due to a population of cells called cancer stem cells (CSCs). These cells utilize progenitor cell signaling programs and develop robust DNA repair machinery. In this editorial highlight we focus on stem cell regulation of TMZ resistance and discuss findings of Happold et al. () that outline direct transcriptional regulation of DNA repair enzyme O6-methylguanine DNA methyltransferase (MGMT) in glioblastoma CSCs through NFkB activation...
March 2018: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29621898/curcumin-and-its-synthetic-analogue-dimethoxycurcumin-differentially-modulates-antioxidant-status-of-normal-human-peripheral-blood-mononuclear-cells
#13
Emmanuel Simon, P Aswini, V B Sameer Kumar, Gokuldas Mankadath
Curcumin is a polyphenol derived from the herb Curcuma longa, which has been extensively studied in terms of its antitumour, antioxidant, and chemopreventive activity as well as various other effects. In the present work we compared curcumin with its synthetic analogue dimethoxycurcumin (dimc) in terms of its antioxidant enzyme-modulating effects in human peripheral blood mononuclear cells (PBMC). We found that these compounds modulate antioxidant enzymes differentially. Both curcumin and dimethoxycurcumin effected a decrease in lipid peroxidation status in PBMC, however, curcumin had better activity in this regard...
April 6, 2018: Free Radical Research
https://www.readbyqxmd.com/read/29609616/palmitate-induced-slc2a4-glut4-downregulation-in-l6-muscle-cells-evidence-of-inflammatory-and-endoplasmic-reticulum-stress-involvement
#14
Patrícia Ebersbach-Silva, Ana Cláudia Poletto, Aline David-Silva, Patrícia Monteiro Seraphim, Gabriel Forato Anhê, Marisa Passarelli, Daniela Tomie Furuya, Ubiratan Fabres Machado
BACKGROUND: Obesity is strongly associated to insulin resistance, inflammation, and elevated plasma free fatty acids, but the mechanisms behind this association are not fully comprehended. Evidences suggest that endoplasmic reticulum (ER) stress may play a role in this complex pathophysiology. The aim of the present study was to investigate the involvement of inflammation and ER stress in the modulation of glucose transporter GLUT4, encoded by Slc2a4 gene, in L6 skeletal muscle cells...
April 2, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29608232/cytokine-induced-interleukin-1-receptor-antagonist-protein-expression-in-genetically-engineered-equine-mesenchymal-stem-cells-for-osteoarthritis-treatment
#15
Simone Gabner, Reinhard Ertl, Karsten Velde, Matthias Renner, Florien Jenner, Monika Egerbacher, Juraj Hlavaty
BACKGROUND: A combination of tissue engineering methods employing MSCs together with gene transfer takes the advantage of both innovative strategies and highlights a new approach to target osteoarthritis (OA) and other cartilage defects. Furthermore, the development of systems allowing tunable transgene expression, regulated by natural disease-induced substances is highly desirable. METHODS: Bone marrow-derived equine MSCs were transduced with a lentiviral vector expressing interleukin-1 receptor antagonist (IL-1Ra) gene under control of an inducible NFkB-responsive promoter and the IL-1Ra production upon pro-inflammatory cytokine stimulation (TNFα, IL-1β) was analysed...
April 2, 2018: Journal of Gene Medicine
https://www.readbyqxmd.com/read/29607607/alpha-1-antitrypsin-in-cell-and-organ-transplantation
#16
Mel Berger, Mingyao Liu, Marc E Uknis, Maria Koulmanda
Limited availability of donor organs and risk of ischemia-reperfusion injury (IRI) seriously restrict organ transplantation. Therapeutics that can prevent or reduce IRI could potentially increase the number of transplants by increasing use of borderline organs and decreasing discards. Alpha-1 antitrypsin (AAT) is an acute phase reactant and serine protease inhibitor which limits inflammatory tissue damage. Purified plasma-derived AAT has been well-tolerated in more than 30 years of use to prevent emphysema in AAT deficient individuals...
April 1, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29600566/endothelial-committed-oral-stem-cells-as-modelling-in-the-relationship-between-periodontal-and-cardiovascular-disease
#17
Jacopo Pizzicannella, Francesca Diomede, Ilaria Merciaro, Sergio Caputi, Armando Tartaro, Simone Guarnieri, Oriana Trubiani
In the present study we have mimicked, in vitro, an inflammatory process using Lipopolysaccharide derived from Porphyromonas Gingivalis (LPS-G) and human Periodontal Ligament Stem Cells induced to endothelial differentiation (e-hPDLSCs). The research project has been organized into the three following steps: i) induction of hPDLSCs toward endothelial differentiation; ii) evaluation of the molecular signaling pathway involved in the response to the LPS-G, and iii) functional response evaluation of the living construct constituted by porcine decellularized valve/e-hPDLSCs treated with LPS-G...
March 30, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29570987/role-of-egcg-in-containing-the-progression-of-lung-tumorigenesis-a-multistage-targeting-approach
#18
Sunil Kumar Dhatwalia, Manoj Kumar, Devinder K Dhawan
Lung cancer is a prominent form among various types of cancers, irrespective of the sex worldwide. Treatment of lung cancer involves the intensive phase of chemotherapy/radiotherapy which is associated with high rate of adverse events. There is a need of safe and reliable treatment/adjunctive therapy to apprehend the cancer by reducing the undesirable outcome of primary therapy. Epigallocatechin-3-gallate (EGCG), which is a potent antioxidant and anticancer compound extracted from the plant camellia sinensis has proved to be a novel agent to control or reduce lung tumorigenesis by affecting the signaling molecules of cell cycle regulation and apoptotic pathways...
March 23, 2018: Nutrition and Cancer
https://www.readbyqxmd.com/read/29569577/effects-of-volatile-anesthetic-preconditioning-on-expression-of-nfkb-regulated-genes-in-aged-rat-myocardium
#19
Zhong Cai-Yun, Qiu Hong, Chen Jun, Liu Hong
Volatile anesthetic preconditioning has been shown to be a potent way to provide myocardium protection against ischemia/reperfusion (I/R) injury; however, this cardioprotection is lost in senescent animal models and elderly patients. NFkB-regulated genes have been linked to myocardial I/R injury and anesthetic preconditioning. Here, we investigated NFkB activation related to anesthetic preconditioning in aging rat myocardium. Isolated, Langendorff perfused rat hearts from Fischer 344 male rats, 24 months old, were randomly assigned to one of the three groups...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29564065/single-nucleotide-polymorphism-rs696-in-mir449a-binding-site-of-nfkbia-gene-is-correlated-with-risk-of-colorectal-cancer
#20
Miganoosh Simonian, Meysam Mosallayi, Maryam Miraghajani, Awat Feizi, Sharifeh Khosravi, Ahmad Reza Salehi, Deniz Mortazavi, Farideh Saberi, Rasoul Salehi
Aim: In present study we have elucidated the role of 2758 A>G (rs696), in the recognition site of miR449a in the 3' UTR of NFKB inhibitor alpha (NFKBIA) gene, in development of sporadic colorectal cancer. Background: Colorectal cancer (CRC) is rated as second cause of cancer death. Genetic determinants are considered as driving forces in development of sporadic CRC. Single nucleotide polymorphisms (SNPs), are attributed as the main genetic factor in cancers susceptibility...
2018: Gastroenterology and Hepatology From Bed to Bench
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