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https://www.readbyqxmd.com/read/29156373/mitochondria-targeted-ubiquinone-mitoq-enhances-acetaldehyde-clearance-by-reversing-alcohol-induced-posttranslational-modification-of-aldehyde-dehydrogenase-2-a-molecular-mechanism-of-protection-against-alcoholic-liver-disease
#1
Liuyi Hao, Qian Sun, Wei Zhong, Wenliang Zhang, Xinguo Sun, Zhanxiang Zhou
Alcohol metabolism in the liver generates highly toxic acetaldehyde. Breakdown of acetaldehyde by aldehyde dehydrogenase 2 (ALDH2) in the mitochondria consumes NAD(+) and generates reactive oxygen/nitrogen species, which represents a fundamental mechanism in the pathogenesis of alcoholic liver disease (ALD). A mitochondria-targeted lipophilic ubiquinone (MitoQ) has been shown to confer greater protection against oxidative damage in the mitochondria compared to untargeted antioxidants. The present study aimed to investigate if MitoQ could preserve mitochondrial ALDH2 activity and speed up acetaldehyde clearance, thereby protects against ALD...
November 11, 2017: Redox Biology
https://www.readbyqxmd.com/read/29114703/validation-of-hepa-index-as-a-non-invasive-biomarkers-panel-for-assessment-of-hepatic-fibrosis-in-egyptians-with-chronic-hepatitis-c
#2
Mohamed Alboraie, Kerstin Schütte, Marwa Khairy, Marwa Elsharkawy, Noha Asem, Fathy Elghamry, Helmy Shalaby, Gamal Esmat, Peter Malfertheiner
To validate the diagnostic performance of Hepa-Index in predicting different stages of hepatic fibrosis in Egyptian patients with chronic hepatitis C (CHC). Methods: Hundred treatment naïve chronic hepatitis C Egyptian patients were prospectively enrolled between June 2014 and January 2015. They were subjected to: platelet count, alpha-2-macroglobulin (α2-MG), total bilirubin, gamma glutamyl transpeptidase (GGT), total cholesterol, liver biopsy and histopathological staging of hepatic fibrosis according to METAVIR scoring system...
November 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/29112686/interferon-regulatory-factor-1-priming-of-tumour-derived-exosomes-enhances-the-antitumour-immune-response
#3
Mu-Qing Yang, Qiang Du, Patrick R Varley, Julie Goswami, Zhihai Liang, Ronghua Wang, Hui Li, Donna B Stolz, David A Geller
BACKGROUND: Tumour-derived exosomes (TEXs) have a potential for application in cancer vaccines. Whether TEXs after induction by interferon regulatory factor 1 (IRF-1) are capable of enhancing the antitumour response remains to be determined. METHODS: Exosomes released by tumour cells infected with IRF-1-expressing adenovirus (IRF-1-Exo) or treated with interferon-γ (IFN-Exo) were isolated via ultracentrifugation. The IRF-1 target proteins IL-15Rα and MHC class I (MHC-I) were analysed by western blot...
November 7, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29105850/cost-effectiveness-analysis-of-interventions-for-prevention-of-invasive-aspergillosis-among-leukemia-patients-during-hospital-construction-activities
#4
Juan Felipe Combariza, Luis Fernando Toro, John Jairo Orozco, Marcos Arango
OBJECTIVES: Invasive Aspergillosis (IA) is a serious problem among hematological patients and it is associated with high mortality. This situation can worsen at times of hospital construction, however there are several preventive measures available. This work aims to define the cost-effectiveness of some of these interventions. PATIENTS AND METHODS: A decision tree model was used, it was divided into four arms according to each one of the interventions performed...
November 6, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/29097840/sustained-renal-inflammation-following-2-weeks-of-inhalation-of-occupationally-relevant-levels-of-zinc-oxide-nanoparticles-in-sprague-dawley-rats
#5
Chu-Chun Chien, Yuan-Horng Yan, Hung-Tzu Juan, Tsun-Jen Cheng, Jia-Bin Liao, Huai-Pao Lee, Jyh-Seng Wang
Exposure to zinc oxide (ZnO) has been linked to adverse health effects, but the renal effects of ZnO nanoparticles (ZnONPs) remain unclear. The objective of this study was to determine the renal toxicity of inhaled ZnONPs. Sprague Dawley (SD) rats were exposed to occupationally relevant levels of 1.1 (low dose) and 4.9 mg/m(3) (high dose) ZnONPs or high-efficiency particulate arresting-filtered air (HEPA-FA) via inhalation for 2 weeks. Histopathological examinations of rat kidneys were performed at 24 hours, 7 days, and 1 month after exposure...
October 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/29090916/deinococcucins-a-d-aminoglycolipids-from-deinococcus-sp-a-gut-bacterium-of-the-carpenter-ant-camponotus-japonicus
#6
Bora Shin, So Hyun Park, Byung-Yong Kim, Shin-Il Jo, Sang Kook Lee, Jongheon Shin, Dong-Chan Oh
Four new aminoglycolipids, deinococcucins A-D (1-4), were discovered from a Deinococcus sp. strain isolated from the gut of queen carpenter ants, Camponotus japonicus. The structures of deinococcucins A-D were elucidated as a combination of N-acetyl glucosamine, 2,3-dihydroxypropanoic acid, and an alkyl amine with a C16 or C17 hydrocarbon chain primarily based on 1D and 2D NMR and mass spectroscopic data. The exact location of the olefinic double bond in deinococcucins C and D (3 and 4) was assigned based on the liquid chromatography-mass spectroscopy data obtained after olefin metathesis...
November 1, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29079265/the-viability-of-primary-hepatocytes-is-maintained-under-a-low-cysteine-glutathione-redox-state-with-a-marked-elevation-in-ophthalmic-acid-production
#7
Jaeyong Lee, Eun Sil Kang, Sho Kobayashi, Takujiro Homma, Hideyo Sato, Han Geuk Seo, Junichi Fujii
Extracellular cystine, the oxidized form of cysteine (Cys), is taken up by cells via the cystine transporter xCT. xCT is not expressed in the liver but is induced in primary hepatocytes under conventional cultured conditions. However, compared to wild-type hepatocytes those from the xCT-knockout mouse showed no evidence of an abnormality and the levels of both Cys and glutathione (GSH) remained unchanged. The levels of ophthalmic acid (OPT), which is produced as an alternative compound by the GSH-synthesizing pathway, became increased during the culturing of hepatocytes...
October 26, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29026462/murine-hepatocellular-carcinoma-derived-stem-cells-reveal-epithelial-to-mesenchymal-plasticity
#8
Aparna Jayachandran, Ritu Shrestha, Bijay Dhungel, I-Tao Huang, Marianna Yumi Kawashima Vasconcelos, Brian J Morrison, Charmaine A Ramlogan-Steel, Jason C Steel
AIM: To establish a model to enrich and characterize stem-like cells from murine normal liver and hepatocellular carcinoma (HCC) cell lines and to further investigate stem-like cell association with epithelial-to-mesenchymal transition (EMT). METHODS: In this study, we utilized a stem cell conditioned serum-free medium to enrich stem-like cells from mouse HCC and normal liver cell lines, Hepa 1-6 and AML12, respectively. We isolated the 3-dimensional spheres and assessed their stemness characteristics by evaluating the RNA levels of stemness genes and a cell surface stem cell marker by quantitative reverse transcriptase-PCR (qRT-PCR)...
September 26, 2017: World Journal of Stem Cells
https://www.readbyqxmd.com/read/28941003/trajectories-of-fear-avoidance-beliefs-on-physcial-activity-over-two-years-in-people-with-rheumatoid-arthritis
#9
Ingrid Demmelmaier, Annika Björk, Alyssa B Dufour, Birgitta Nordgren, Christina H Opava
OBJECTIVE: To identify and describe two-year trajectories of fear-avoidance beliefs on physical activity and to identify predictors of these trajectories in people with rheumatoid arthritis (RA). METHODS: We included 2569 persons with RA (77% women, mean age 58 years). Data on fear-avoidance beliefs (Fear-Avoidance Beliefs Questionnaire - Physical Activity subscale, FABQ-PA, 0-24), sociodemographics, disease-related variables, self-efficacy and health-enhancing physical activity (HEPA) were collected from registers and by questionnaires at baseline, 14 and 26 months...
September 21, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28866422/alterations-in-cardiovascular-function-by-particulate-matter-in-rats-using-a-crossover-design
#10
Hsiao-Chi Chuang, Yin-Jyun Lin, Charles C K Chou, Jing-Shiang Hwang, Chu-Chih Chen, Yuan-Horng Yan, Hui-I Hsieh, Kai-Jen Chuang, Tsun-Jen Cheng
The objective of this study was to investigate associations between cardiovascular effects and urban ambient particle constituents using an in vivo crossover experimental design. Ambient particles were introduced to an exposure chamber for whole-body exposure of WKY rats, where the particulate matter with an aerodynamic diameter of <2.5 μm (PM2.5) mass concentration, particle number concentration, and black carbon (BC) were monitored. Organic carbon (OC), elemental carbon (EC), and soluble ions of PM2...
December 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28857900/regression-of-liver-fibrosis-over-a-24-week-period-after-completing-direct-acting-antiviral-therapy-in-patients-with-chronic-hepatitis-c-receiving-care-within-the-national-hepatitis-c-elimination-program-in-georgia-results-of-hepatology-clinic-hepa-experience
#11
Ekaterine Dolmazashvili, Akaki Abutidze, Nikoloz Chkhartishvili, Marine Karchava, Lali Sharvadze, Tengiz Tsertsvadze
OBJECTIVE: We assessed the impact of direct-acting antiviral (DAA) therapy on liver fibrosis regression measured by transient elastography (TE) in patients with chronic hepatitis C virus (HCV) infection. PATIENTS AND METHODS: A prospective cohort study was carried out in HCV monoinfected patients with advanced liver fibrosis or cirrhosis receiving interferon (IFN)-containing or IFN-free DAA therapy. Liver stiffness (LS) score more than 14.5 kPa indicated LS-defined cirrhosis...
November 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28853289/characterization-and-control-of-nanoparticle-emission-during-3d-printing
#12
Ohhun Kwon, Chungsik Yoon, Seunghon Ham, Jihoon Park, Jinho Lee, Danbi Yoo, Yoojin Kim
This study aimed to evaluate particle emission characteristics and to evaluate several control methods used to reduce particle emissions during three-dimensional (3D) printing. Experiments for particle characterization were conducted to measure particle number concentrations, emission rates, morphology, and chemical compositions under manufacturer-recommended and consistent-temperature conditions with seven different thermoplastic materials in an exposure chamber. Eight different combinations of the different control methods were tested, including an enclosure, an extruder suction fan, an enclosure ventilation fan, and several types of filter media...
August 30, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28834334/enhanced-hepatic-functions-of-genetically-modified-mouse-hepatoma-cells-by-spheroid-culture-for-drug-toxicity-screening
#13
Joyita Sarkar, Jyoti Kumari, Jane M Tonello, Masamichi Kamihira, Ashok Kumar
While hepatic cell lines are mainly used for in vitro drug induced toxicity studies, they exhibit limited functionalities. To overcome this, the authors have employed genetically engineered mouse hepatoma cells, Hepa/8F5, wherein expression of liver enriched transcription factors is induced by doxycycline leading to increased functionality. Further enhancement in functionality is achieved by spheroid culture in a previously developed 3D cell culture platform. Cells are seeded in presence of temperature-responsive poly(N-isopropylacrylamide) on poly(N-isopropylacrylamide--co-gelatin) cryogel scaffold based high throughput platform...
August 22, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28827690/hepatic-overproduction-of-13-hode-due-to-alox15-upregulation-contributes-to-alcohol-induced-liver-injury-in-mice
#14
Wenliang Zhang, Wei Zhong, Qian Sun, Xinguo Sun, Zhanxiang Zhou
Chronic alcohol feeding causes lipid accumulation and apoptosis in the liver. This study investigated the role of bioactive lipid metabolites in alcohol-induced liver damage and tested the potential of targeting arachidonate 15-lipoxygenase (ALOX15) in treating alcoholic liver disease (ALD). Results showed that chronic alcohol exposure induced hepatocyte apoptosis in association with increased hepatic 13-HODE. Exposure of 13-HODE to Hepa-1c1c7 cells induced oxidative stress, ER stress and apoptosis. 13-HODE also perturbed proteins related to lipid metabolism...
August 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821867/identification-of-the-n-terminal-transmembrane-domain-of-stard7-and-its-importance-for-mitochondrial-outer-membrane-localization-and-phosphatidylcholine-transfer
#15
Yasuhiro Horibata, Hiromi Ando, Motoyasu Satou, Hiroaki Shimizu, Satomi Mitsuhashi, Yasuo Shimizu, Masahiko Itoh, Hiroyuki Sugimoto
StarD7 facilitates phosphatidylcholine (PC) transfer to mitochondria, and is essential for mitochondrial homeostasis. However, the molecular mechanism for PC transfer by protein remains poorly understood. Herein, we describe a putative novel transmembrane (TM) domain C-terminal to the mitochondria-targeting signal (MTS) sequence at the N-terminus of StarD7. The mature form of StarD7 is integrated and/or associated onto the outer leaflet of the outer mitochondrial membrane (OMM) in HEPA-1 and HepG2 cells. A truncated form of StarD7 lacking the TM domain is distributed in the inner space of the mitochondria, and cannot reverse mitochondrial abnormalities, such as complex formation and PC content, when re-expressed in StarD7-KO HEPA-1 cells...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808407/in-vitro-cell-viability-by-cellprofiler-%C3%A2-software-as-equivalent-to-mtt-assay
#16
Luciana S Gasparini, Nayana D Macedo, Elisângela F Pimentel, Marcio Fronza, Valdemar L Junior, Warley S Borges, Eduardo R Cole, Tadeu U Andrade, Denise C Endringer, Dominik Lenz
OBJECTIVE: This study evaluated in vitro cell viability by the colorimetric MTT stands for 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide) (3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide) assay compared to image analysis by CellProfiler(®) software. MATERIALS AND METHODS: Hepatoma (Hepa-1c1c7) and fibroblast (L929) cells were exposed to isolated substances, camptothecin, lycorine, tazettine, albomaculine, 3-epimacronine, trispheridine, galanthine and Padina gymnospora, Sargassum sp...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807063/performance-of-a-novel-non-fit-tested-hepa-filtering-face-mask
#17
Constance Yung Ting Hui, Czarina Chi Hung Leung, Charles David Gomersall
No abstract text is available yet for this article.
August 15, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28761718/an-observational-study-of-spectators-step-counts-and-reasons-for-attending-a-professional-golf-tournament-in-scotland
#18
Andrew D Murray, Kieran Turner, Daryll Archibald, Chloe Schiphorst, Steffan Arthur Griffin, Hilary Scott, Roger Hawkes, Paul Kelly, Liz Grant, Nanette Mutrie
BACKGROUND: Spectators at several hundred golf tournaments on six continents worldwide may gain health-enhancing physical activity (HEPA) during their time at the event. This study aims to investigate spectators' reasons for attending and assess spectator physical activity (PA) (measured by step count). METHODS: Spectators at the Paul Lawrie Matchplay event in Scotland (August 2016) were invited to take part in this study. They were asked to complete a brief questionnaire with items to assess (1) demographics, (2) reasons for attendance and (3) baseline PA...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28736936/invasive-fungal-infection-following-chemotherapy-for-acute-myeloid-leukaemia-experience-from-a-developing-country
#19
Anu Korula, Aby Abraham, Fouzia N Abubacker, Auro Viswabandya, Kavitha M Lakshmi, O C Abraham, Priscilla Rupali, George M Varghese, Joy S Michael, Alok Srivastava, Vikram Mathews, Biju George
The incidence of invasive fungal infections (IFI) is believed to be higher in patients with acute myeloid leukaemia (AML) undergoing chemotherapy in non-HEPA-filtered rooms. The aim of this study is to review the incidence of IFI in a large cohort of patients with AML treated at a single centre in India. Two hundred and twenty-two patients with AML treated with either induction chemotherapy or salvage chemotherapy between 2008 and 2013 were studied retrospectively. IFI was defined as per the revised EORTC-MSG criteria...
July 23, 2017: Mycoses
https://www.readbyqxmd.com/read/28693587/human-presence-impacts-fungal-diversity-of-inflated-lunar-mars-analog-habitat
#20
A Blachowicz, T Mayer, M Bashir, T R Pieber, P De León, K Venkateswaran
BACKGROUND: An inflatable lunar/Mars analog habitat (ILMAH), simulated closed system isolated by HEPA filtration, mimics International Space Station (ISS) conditions and future human habitation on other planets except for the exchange of air between outdoor and indoor environments. The ILMAH was primarily commissioned to measure physiological, psychological, and immunological characteristics of human inhabiting in isolation, but it was also available for other studies such as examining its microbiological aspects...
July 11, 2017: Microbiome
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