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https://www.readbyqxmd.com/read/29220684/predictors-of-remission-from-ptsd-symptoms-after-sexual-and-non-sexual-trauma-in-the-community-a-mediated-survival-analytic-approach
#1
Mario Müller, Vladeta Ajdacic-Gross, Stephanie Rodgers, Birgit Kleim, Erich Seifritz, Stefan Vetter, Stephan T Egger, Wulf Rössler, Enrique Castelao, Martin Preisig, Caroline Vandeleur
Epidemiological data on the chronicity of posttraumatic stress disorder (PTSD) symptoms in relation to trauma type and underlying pathways are rare. The current study explored how PTSD symptoms change over time across different trauma types and examined mediators of their persistence. A trauma-exposed community sample, whereof approximately one quarter met diagnostic criteria for PTSD, provided retrospective data on the duration of PTSD symptoms. Those who remitted and those who had not at the time of assessment were compared regarding worst trauma, symptom severity, comorbidity, demographic and treatment-seeking variables...
December 2, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29217486/aberrant-promoter-methylation-in-genes-related-to-hematopoietic-malignancy-in-workers-exposed-to-a-voc-mixture
#2
Octavio Jiménez-Garza, Liqiong Guo, Hyang-Min Byun, Mariella Carrieri, Giovanni Battista Bartolucci, Briscia Socorro Barrón-Vivanco, Andrea A Baccarelli
Occupational exposure to volatile organic compounds (VOCs) may cause hematopoietic malignancy, either by single exposure to benzene or possibly due to a concomitant exposure to several VOCs. Since oxidative stress, inflammation and DNA repair pathways are closely involved in cancer development, the effect of VOC exposure on expression of proteins involved in these pathways has been studied, but epigenetic changes have not been well described. Here, DNA methylation status following occupational exposure to a VOC mixture was assessed by bisulfite sequencing of the promoter regions of seven genes involved in the mentioned pathways...
December 4, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29216640/celecoxib-down-regulates-the-hypoxia-induced-expression-of-hif-1%C3%AE-and-vegf-through-the-pi3k-akt-pathway-in-retinal-pigment-epithelial-cells
#3
Yi-Zhou Sun, Na Cai, Ning-Ning Liu
BACKGROUND/AIMS: The goal of this study was to detect the expression of hypoxia-inducible factor 1α (HIF-1α) and vascular endothelial growth factor (VEGF) in human retinal pigmented epithelial (RPE) cells treated with celecoxib, a selective cyclooxygenase-2 (COX-2) inhibitor, under hypoxic and normoxic conditions and to explore the signaling mechanism involved in regulating the hypoxia-induced expression of HIF-1α and VEGF in RPE cells. METHODS: D407 cells were cultured in normoxic or hypoxic conditions, with or without celecoxib or a PI3K inhibitor (LY294002)...
December 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29216624/sildenafil-viagra%C3%A2-prevents-cox-1-txa2-pathway-mediated-vascular-hypercontractility-in-apoe-mice
#4
Marcos A S Leal, Ananda T Dias, Marcella L Porto, Bruna F Brun, Agata L Gava, Silvana S Meyrelles, José Gil-Longo, Manuel Campos-Toimil, Thiago M C Pereira, Elisardo C Vasquez
BACKGROUND/AIMS: The atherosclerotic apolipoprotein E-deficient (apoE-/-) mouse exhibits impaired vasodilation and enhanced vasoconstriction responsiveness. The objectives of this study were: a) to determine the relative contribution of cyclooxygenases (Cox-1 and Cox-2), thromboxane A2 (TXA2) and endothelin-1 (ET-1) to enhancing vascular hyperresponsiveness in this model of atherosclerosis and b) to investigate the beneficial effects of the phosphodiesterase 5 inhibitor sildenafil on this endothelial dysfunction...
December 7, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29215850/-the-role-of-prostaglandins-and-cyclooxygenase-in-pathogenesis-of-chronic-endometritis
#5
E I Samodelkin, N G Mercucheva, P V Kosareva, L Y Nesterova
The purpose: to present the modern data of cyclooxygenase role (COX) in the development of chronic endometritis.106 references on the role of COX-1 and COX-2 in the development of chronic endometritis in patients of reproductive age, published in the Medline database, Pubmed, Scopus were analyzed; 14 sources are included in this review. Prostaglandins (PG) play an important role in maintaining inflammatory process in the endometrium. Nevertheless, the production of PG and leukotrienes (LTS) - lipid mediators, which, along with PG, play a major role in the inflammatory process of the inflamed uterus, is not fully understood...
April 2017: Patologicheskaia Fiziologiia i èksperimental'naia Terapiia
https://www.readbyqxmd.com/read/29215713/nicotine-increases-colon-cancer-cell-migration-and-invasion-through-epithelial-to-mesenchymal-transition-emt-cox-2-involvement
#6
Simona Dinicola, Maria Grazia Masiello, Sara Proietti, Pierpaolo Coluccia, Gianmarco Fabrizi, Angela Catizone, Giulia Ricci, Giorgio De Toma, Mariano Bizzarri, Alessandra Cucina
Cigarette smoking is a recognized risk factor for colon cancer and nicotine, the principal active component of tobacco, plays a pivotal role in increasing colon cancer cell growth and survival. The aim of this study was to determine the effect of nicotine on cellular Caco-2 and HCT-8 migration and invasion, focusing on epithelial to mesenchymal transition (EMT) induction and COX-2 pathway involvement. In both these cell lines, treatment with nicotine increased COX-2 expression and the release of its enzymatic product PGE2 ...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29214554/geniposide-suppresses-interleukin-1%C3%AE-induced-inflammation-and-apoptosis-in-rat-chondrocytes-via-the-pi3k-akt-nf-%C3%AE%C2%BAb-signaling-pathway
#7
Tianlong Pan, Xuchao Shi, Huan Chen, Rong Chen, Dengying Wu, Zeng Lin, Jingdong Zhang, Jun Pan
Osteoarthritis (OA) is a chronic degenerative joint disease that is principally characterized by progressive joint dysfunction and cartilage degradation. Inflammation and apoptosis play critical roles in the progression of OA. Geniposide (GPO), one of the principal components of the fruit of Gardenia jasminoides Ellis, has been reported to have anti-inflammatory and other pharmacological effects. In this study, we performed in vitro experiments on rat chondrocytes to examine the therapeutic effects of GPO on OA and investigated its effects in vivo in a rat model of OA induced by medial meniscal tear (MMT)...
December 6, 2017: Inflammation
https://www.readbyqxmd.com/read/29212296/immune-enhancement-effect-of-asterias-amurensis-fatty-acids-through-nf-kappab-and-mapk-pathways-on-raw-264-7-cells
#8
Chaiwat Monmai, Seok Hyeon Go, Il-Sik Shin, SangGuan You, Hyungjae Lee, SeokBeom Kang, Woo Jung Park
Asterias amurensis is a marine organism that causes damage to the fishing industry worldwide; however, it has been considered a promising source of functional components. The present study aimed to investigate the immune-enhancing effects of fatty acids from three organs of A. amurensis on murine macrophages (RAW 264.7 cells). A. amurensis fatty acids boosted production of immune-associated factors such as nitric oxide (NO) and prostaglandin E2 in RAW 264.7 cells. A. amurensis fatty acids also enhanced expression of critical immune-associated genes, including iNOS, TNF-α, IL-1β, and IL-6, as well as COX-2...
December 8, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29211014/lipopolysaccharide-induced-nitric-oxide-prostaglandin-e2-and-cytokine-production-of-mouse-and-human-macrophages-are-suppressed-by-pheophytin-b
#9
Chun-Yu Lin, Wen-Hung Wang, Shin-Huei Chen, Yu-Wei Chang, Ling-Chien Hung, Chung-Yi Chen, Yen-Hsu Chen
Sepsis is an overwhelming systemic response to infection that frequently results in tissue damage, organ failure, and even death. Nitric oxide (NO), prostaglandin E2 (PGE2), and cytokine overproduction are thought to be associated with the immunostimulatory cascade in sepsis. In the present study, we analyzed the anti-inflammatory efficacy of the pheophytin-b on both RAW 264.7 murine macrophage and purified human CD14⁺ monocytes stimulated with lipopolysaccharide (LPS) and elucidated the mechanisms by analyzing the cell signaling pathways known to be activated in sepsis...
December 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29209987/genetic-investigation-of-polymorphic-ogg1-and-mutyh-genes-towards-increased-susceptibility-in-lung-adenocarcinoma-and-its-impact-on-overall-survival-of-lung-cancer-patients-treated-with-platinum-based-chemotherapy
#10
Amrita Singh, Navneet Singh, Digambar Behera, Siddharth Sharma
Genes OGG1 and MUTYH are the two primary genes in Base excision repair pathway. OGG1 hydrolyzes the sugar phosphate backbone and remove the damaged base creating abasic site. MUTYH complements OGG1 as it particularly remove adenine mispaired with 8-oxo-G. Both OGG1 and MUTYH act as a check for the mis-incorporation of bases may be due to damages incurred on DNA. DNA isolation for 326 lung cancer cases and 330 controls was followed by genotyping making use of PCR-RFLP. Logistic regression was done to analyze the risk towards lung cancer...
December 5, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29207817/immunohistochemical-expression-of-cyclo-oxygenase-2-and-liver-x-receptor-%C3%AE-in-acne-vulgaris
#11
Ola Ahmed Bakry, Shawky Mahmoud El Farargy, Noha Nour El Din El Kady, Hend Farag Abu Dawy
Introduction: Acne Vulgaris (AV) is a common inflammatory disease of pilosebaceous units. Liver X Receptor-α (LXR-α) is a ligand activated transcription factor. It controls transcription of genes involved in lipid and fatty acid synthesis. Cyclo-oxygenase 2 (COX2) is a rate limiting enzyme in prostaglandin synthesis. It plays important role in inflammation. Aim: To evaluate the immunohistochemical expression of LXR-α and COX2 in acne vulgaris skin biopsies to explore their possible pathogenic role in this disease...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29207668/genetic-or-pharmacologic-inhibition-of-egfr-ameliorates-sepsis-induced-aki
#12
Xuan Xu, Juan Wang, Ruhao Yang, Zheng Dong, Dongshan Zhang
Despite recent studies have demonstrated that the EGF receptor (EGFR) activation provided a renoprotective role during ischemic and folic acid-induced AKI, the role and regulation mechanism of EGFR in septic AKI remains unclear. Here, gefitinib, a highly selective EGFR inhibitor, abrogated LPS-induced phosphorylation of EGFR, ERK1/2, and STAT3 as well as expression of COX, eNOS, and proinflammatory cytokines in HK-2 cells. In addition, c-Src is an upstream of EGFR signaling pathway and mediates LPS-induced EGFR transactivation...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207603/effects-of-baicalein-on-il-1%C3%AE-induced-inflammation-and-apoptosis-in-rat-articular-chondrocytes
#13
Yue Li, Jinglu Wang, Xiaopeng Song, Hui Bai, Tianwen Ma, Zhiheng Zhang, Xinran Li, Renli Jiang, Guanying Wang, Xiaojing Fan, Xu Liu, Li Gao
In osteoarthritis (OA), activated synoviocytes and articular chondrocytes produce pro-inflammatory cytokines, such as IL-1β, that promote chondrocyte apoptosis and activate the NF-κB signaling pathway to induce catabolic factors. In this study, we examined the anti-inflammatory and anti-apoptotic effect of baicalein on IL-1β signaling and NF-κB-regulated gene products in rat chondrocytes. Rat chondrocytes were pretreated with 10 ng/ml IL-1β for 24 h and then co-treated with 10 ng/ml IL-1β and 50 μM baicalein for 0, 12, 24, 36 and 48h...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207498/steppogenin-isolated-from-cudrania-tricuspidata-shows-antineuroinflammatory-effects-via-nf-%C3%AE%C2%BAb-and-mapk-pathways-in-lps-stimulated-bv2-and-primary-rat-microglial-cells
#14
Dong-Cheol Kim, Tran Hong Quang, Hyuncheol Oh, Youn-Chul Kim
Excessive microglial stimulation has been recognized in several neurodegenerative diseases, including Parkinson's disease (PD), Alzheimer's disease (AD), amyotropic lateral sclerosis (ALS), HIV-associated dementia (HAD), multiple sclerosis (MS), and stroke. When microglia are stimulated, they produce proinflammatory mediators and cytokines, including nitric oxide (NO) derived from inducible NO synthase (iNOS), prostaglandin E2 (PGE₂) derived from cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-12 (IL-12), and interleukin-6 (IL-6)...
December 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29206673/pd-l1-expression-tumor-infiltrating-lymphocytes-and-clinical-outcome-in-patients-with-surgically-resected-esophageal-cancer
#15
Taisuke Yagi, Yoshifumi Baba, Takatsugu Ishimoto, Masaaki Iwatsuki, Yuji Miyamoto, Naoya Yoshida, Masayuki Watanabe, Hideo Baba
OBJECTIVES: To examine the prognostic impact of the programmed death ligand 1 (PD-L1) expression, tumor-infiltrating lymphocyte (TIL) status, and their combination in esophageal cancer. SUMMARY BACKGROUND DATA: PD-L1 has garnered much attention for its roles in tumor immunology and as an immune-based therapeutic target. To ensure a response to PD-L1 checkpoint inhibitor, a new framework based on PD-L1 expression and the presence or absence of TILs is required. METHODS: Using a nonbiased database of 305 curatively resected esophageal cancers, we evaluated PD-L1 expression and TIL status (cluster of differentiation 8 (CD8) expression) by immunohistochemical analysis...
December 4, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29206462/lipidomics-reveals-dramatic-physiological-kinetic-isotope-effects-during-the-enzymatic-oxygenation-of-polyunsaturated-fatty-acids-i-ex-vivo-i
#16
Aaron R Navratil, Mikhail S Shchepinov, Edward A Dennis
Arachidonic acid (AA, 20:4) is an omega-6 polyunsaturated fatty acid (PUFA) and the main precursor to the class of lipid mediators known as eicosanoids. The enzymes that catalyze the oxygenation of AA begin by abstracting hydrogen from one of three bis-allylic carbons within 1,4- cis,cis-diene units. Substitution of deuterium for hydrogen has been shown to lead to massive kinetic isotope effects (KIE) for soybean lipoxygenase (sLOX) oxygenation of linoleic acid (LA, 18:2). Yet, experimental determination of the KIE during oxygenation of AA and LA by mammalian enzymes including cyclooxygenase (COX) and lipoxygenase (LOX) has revealed far lower values...
December 5, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29204839/prognostic-value-of-a-microrna-signature-as-a-novel-biomarker-in-patients-with-lower-grade-gliomas
#17
Zenghui Qian, Yiming Li, Xing Fan, Chuanbao Zhang, Yinyan Wang, Tao Jiang, Xing Liu
MicroRNAs (miRNAs) may act as prognostic biomarkers in a variety of cancers. The aim of this study was to identify and evaluate a prognostic miRNA signature in patients with lower-grade gliomas (LGGs). miRNA expression profiles and clinical data of patients with LGGs from the Chinese Glioma Genome Atlas (CGGA; the training cohort) and The Cancer Genome Atlas (TCGA; the validation cohort) were analyzed, and the least absolute shrinkage and selection operator Cox regression model was used to identify the miRNA signature, which was combined with clinical prognostic factors to develop an individualized survival prediction model...
December 4, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29204817/oxyphenbutazone-promotes-cytotoxicity-in-rats-and-hep3b-cellsvia-suppression-of-pge2-and-deactivation-of-wnt-%C3%AE-catenin-signaling-pathway
#18
Shakir Saleem, Ruqaiyah Khan, Muhammad Afzal, Imran Kazmi
Hepatocellular carcinoma (HCC) is the fifth leading cause of death and is generally typified by elevated liver enzyme biomarkers, antioxidants, and chronic inflammation of hepatocytes. Although currently available drugs have shown remarkable alleviation of the cancerous condition, but at the same time they present a more severe challenge of toxic effects due to chemotherapy. Therefore, in order to bring more patient-compliant therapy, we aimed to refurbish the use of a COX inhibitor, oxyphenbutazone (OPB), with low dose of methotrexate (MTX) to treat diethyl nitrosamine (DENA)-induced HCC in Wistar rats and in Hep3B cells...
December 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29203196/hepatorenal-protective-effects-of-medicinal-herbs-in-an-gong-niu-huang-wan-agnh-against-cinnabar-and-realgar-induced-oxidative-stress-and-inflammatory-damage-in-mice
#19
Ao Li, Jing-Yao Zhang, Xiao Xiao, Songsong Wang, Jian-Bo Wan, Yu-Shuang Chai, Peng Li, Yitao Wang
An-Gong-Niu-Huang Wan (AGNH) is a famous traditional Chinese medicine prescription that contains cinnabar (HgS) and realgar (As2S2); the clinical practice of AGNH is hindered because both mercury and arsenic are hepatorenal toxic metalloids. It is noted that the cinnabar and realgar in AGNH are not used alone, but rather combined with different kinds of medicinal herbs as a formula to use. In this study, we evaluated the hepatorenal protective effects of the medicinal herbs in AGNH after co-exposure to cinnabar and realgar for 4 weeks in mice...
December 1, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29202300/dihydrofisetin-exerts-its-anti-inflammatory-effects-associated-with-suppressing-erk-p38-mapk-and-heme-oxygenase-1-activation-in-lipopolysaccharide-stimulated-raw-264-7-macrophages-and-carrageenan-induced-mice-paw-edema
#20
Kai Kai Li, Shan Shan Shen, Xiangyi Deng, Hoi Ting Shiu, Wing Sum Siu, Ping Chung Leung, Chun Hay Ko, Bao Hui Cheng
Dihydrofisetin is a flavanonol derived from some edible wild herbs and traditional Chinese medicines. It has been found to possess many biological activities. However, the anti-inflammatory potential of Dihydrofisetin remains uncharacterized. The aim of the present study was to investigate the anti-inflammatory activity of Dihydrofisetin and its underlying mechanisms. We found that Dihydrofisetin dose-dependently inhibited lipopolysaccharide-induced productions of nitric oxide (NO) and prostaglandin E2 (PGE2) in RAW 264...
December 1, 2017: International Immunopharmacology
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