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https://www.readbyqxmd.com/read/29026462/murine-hepatocellular-carcinoma-derived-stem-cells-reveal-epithelial-to-mesenchymal-plasticity
#1
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
#2
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
#3
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...
August 31, 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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/28662659/the-start2bike-program-is-effective-in-increasing-health-enhancing-physical-activity-a-controlled-study
#14
Linda Ooms, Cindy Veenhof, Dinny H de Bakker
BACKGROUND: The sports club is seen as a new relevant setting to promote health-enhancing physical activity (HEPA) among inactive population groups. Little is known about the effectiveness of strategies and activities implemented in the sports club setting on increasing HEPA levels. This study investigated the effects of Start2Bike, a six-week training program for inactive adults and adult novice cyclers, on HEPA levels of participants in the Netherlands. METHODS: To measure physical activity, the Short QUestionnaire to ASsess Health-enhancing physical activity was used (SQUASH)...
June 29, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28660591/society-of-behavioral-medicine-sbm-position-statement-sbm-supports-curbing-summertime-weight-gain-among-america-s-youth
#15
Amy Bohnert, Nicole Zarrett, Michael W Beets, Georgia Hall, Joanna Buscemi, Amy Heard, Russell Pate
The Society of Behavioral Medicine recommends adoption of policies at the district, state, and federal levels that minimize weight gain among youth over the summertime, particularly among low-income, minority school-age youth who appear to be at greater risk. Policies that facilitate (1) partnerships between school districts and community organizations to provide affordable summertime programming, (2) strategic efforts by schools and communities to encourage families to enroll and attend summertime programming via the creation of community-wide summertime offerings offices, (3) adoption of joint-use/shared use agreements in communities to promote use of indoor and outdoor school facilities to provide affordable programming during the summer months, and (4) implementation of strategies that help summer programs achieve the Healthy Eating and Physical Activity (HEPA) standards which have been endorsed by the Healthy Out-of-School Time (HOST) coalition...
June 28, 2017: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/28651580/sex-specific-lung-functional-changes-in-adult-mice-exposed-only-to-second-hand-smoke-in-utero
#16
Alexandra Noël, Rui Xiao, Zakia Perveen, Hasan Zaman, Viviana Le Donne, Arthur Penn
BACKGROUND: An increasing number of epidemiological and experimental studies have associated exposure to second-hand smoke (SHS) during pregnancy with adverse outcomes in newborns. As we have previously shown in mice, in utero exposure to SHS at critical stages of fetal development, results in altered lung responses and increased disease susceptibility upon re-exposure to irritants (SHS or ovalbumin) in adulthood. In this study, we asked whether the in utero SHS exposure alone is sufficient to alter lung structure and function in adult mice...
June 27, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28648794/in%C3%A2-vitro-and-in%C3%A2-vivo-evaluation-of-a-small-caliber-coaxial-electrospun-vascular-graft-loaded-with-heparin-and-vegf
#17
Yun-Tao Hu, Xu-Dong Pan, Jun Zheng, Wei-Guo Ma, Li-Zhong Sun
INTRODUCTION: To date, clinically available expanded polytetrafluoro-ethylene (ePTFE) vascular grafts are suboptimal for reconstructing small caliber (D < 6 mm) arteries, owing to thrombosis in early and restenosis in late stage. Our aim in this preliminary study was to fabricate a nano-fibrous vascular graft which was biofunctionalized with VEGF165 and heparin. The short term performance was evaluated both in vitro and in vivo. METHOD: Four-mm caliber grafts were prepared by the coaxial-elctrospun technique, which consisted of poly(l-lactide-co-caprolactone) [P(LLA-CL)] collagen and elastin...
June 22, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28645116/the-additive-effects-of-the-tm6sf2-e167k-and-pnpla3-i148m-polymorphisms-on-lipid-metabolism
#18
Lizhen Chen, Shuixian Du, Linlin Lu, Zhonghua Lin, Wenwen Jin, Doudou Hu, Xiangjun Jiang, Yongning Xin, Shiying Xuan
There is a genetic susceptibility for nonalcoholic fatty liver disease (NAFLD). To examine the role of genetic factors in the disease, a Bayesian analysis was performed to model gene relationships in NAFLD pathogenesis. The Bayesian analysis indicated a potential gene interaction between the TM6SF2 and PNPLA3 genes. Next, to explore the underlying mechanism at the cellular level, we evaluated the additive effects between the TM6SF2 E167K and PNPLA3 I148M polymorphisms on lipid metabolism. Hepa 1-6 cells were transfected with a control vector or with overexpression vectors for TM6SF2/PNPLA3-wild type, TM6SF2-mutant type, PNPLA3-mutant type, or TM6SF2/PNPLA3-mutant type...
June 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28642009/mice-in-the-early-stage-of-liver-steatosis-caused-by-a-high-fat-diet-are-resistant-to-thioacetamide-induced-hepatotoxicity-and-oxidative-stress
#19
Jaeyong Lee, Takujiro Homma, Junichi Fujii
Lipogenesis is stimulated in the liver by an unfolded protein response (UPR) to endoplasmic reticulum stress under a variety of pathological conditions and results in the accumulation of lipids in hepatocytes. Assuming that UPR is a protective mechanism against stress, we hypothesized that the accumulated lipids might have a beneficial function. We prepared mice with fatty livers by feeding two types of high-calorie diets; a lard-rich high-calorie diet (LHD) or a menhaden oil-containing high-calorie diet (MHD), for two weeks and treated them, as well as control diet (CD)-fed mice, with thioacetamide (TAA), a liver toxicant...
August 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28641918/resistance-of-mice-to-leptospira-infection-and-correlation-with-chemokine-response
#20
R H Domingos, E B Pavanel, E Nakajima, L Schons-Fonseca, R M A Da Costa, M De Franco, E Carvalho, P L Ho, E A Martins, J B Da Silva
Leptospirosis is globally widespread neglected disease, affecting most mammalian species. Clinical signs can be confused with other diseases which make the diagnosis and treatment difficult. Chemokines and cytokines are known for their role in the inflammatory and immune response to infections. The profile determination of chemokines' expressions in the course of infection may elucidate the defense mechanisms of the host and support the search for effective treatment strategies. We investigated the mechanisms of innate immunity through the comparison of chemokines induced during infection with L...
May 26, 2017: Immunobiology
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