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https://www.readbyqxmd.com/read/28648794/in-vitro-and-in-vivo-evaluation-of-a-coaxial-electrospun-small-caliber-vascular-graft-loaded-with-heparin-and-vegf
#1
Yuntao Hu, Xudong Pan, Jun Zheng, Weiguo Ma, Lizhong Sun
INTRODUCTION: To date, clinically available expanded polytetrafluoro- Ethylene (ePTFE) vascular grafts are suboptimal for reconstructing small Caliber (D<;6mm)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 VEGF and hepa-rin. The short term performance was evaluated both in vitro and in vivo. METHOD: 4 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
#2
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
#3
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...
June 19, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28641918/resistance-of-mice-to-leptospira-infection-and-correlation-with-chemokine-response
#4
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
https://www.readbyqxmd.com/read/28609202/the-financial-burden-of-public-health-responses-to-hepatitis-a-cases-among-food-handlers-2012-2014
#5
Rebecca J Morey, Melissa G Collier, Noele P Nelson
When food handlers become ill with hepatitis A virus (HAV) infection, state and local health departments must assess the risk of HAV transmission through prepared food and recommend or provide postexposure prophylaxis (PEP) for those at risk for HAV infection. Providing PEP (eg, hepatitis A [HepA] vaccine or immunoglobulin), however, is costly. To describe the burden of these responses on state and local health departments, we determined the number of public health responses to HAV infections among food handlers by reviewing public internet sources of media articles...
January 1, 2017: Public Health Reports
https://www.readbyqxmd.com/read/28609099/botrysphones-a-c-and-botrysphins-a-f-triketides-and-diterpenoids-from-the-fungus-botrysphaeria-laricina
#6
Peng-Liang Zhang, Yang Han, Long-Teng Zhang, Xiao-Ling Wang, Tao Shen, Dongmei Ren, Hongxiang Lou, Xiao-Ning Wang
Three new triketides, botrysphones A-C (1-3) and six new isopimarane-type diterpenoids, botrysphins A-F (4-9), together with the known triketides sphaeropsidone (10) and chlorosphaeropsidone (11) and diterpenoids sphaeropsidins A and B (12 and 13), were obtained from culture of the fungus Botrysphaeria laricina associated with the moss Rhodobryum umgiganteum. The structures of the new compounds were established on the basis of extensive spectroscopic techniques including HRMS and 1D and 2D NMR data. Compounds 7 and 12 showed significant quinone reductase inducing activity in Hepa 1c1c7 cells...
June 13, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28598368/self-assembled-lipid-nanoparticles-for-oral-delivery-of-heparin-coated-iron-oxide-nanoparticles-for-theranostic-purposes
#7
Eleonora Truzzi, Chiara Bongio, Francesca Sacchetti, Eleonora Maretti, Monica Montanari, Valentina Iannuccelli, Elena Vismara, Eliana Leo
Recently, solid lipid nanoparticles (SLNs) have attracted increasing attention owing to their potential as an oral delivery system, promoting intestinal absorption in the lymphatic circulation which plays a role in disseminating metastatic cancer cells and infectious agents throughout the body. SLN features can be exploited for the oral delivery of theranostics. Therefore, the aim of this work was to design and characterise self-assembled lipid nanoparticles (SALNs) to encapsulate and stabilise iron oxide nanoparticles non-covalently coated with heparin (Fe@hepa) as a model of a theranostic tool...
June 9, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28585554/interferon-free-therapy-in-elderly-patients-with-advanced-liver-disease
#8
Sabela Lens, Inmaculada Fernández, Sergio Rodríguez-Tajes, Vanessa Hontangas, Mercedes Vergara, Montserrat Forné, Jose Luis Calleja, Moisés Diago, Jordi Llaneras, Susana Llerena, Xavier Torras, Begoña Sacristán, Merce Roget, Conrado Manuel Fernández-Rodríguez, Mari Carmen Navascués, Javier Fuentes, Juan-José Sánchez-Ruano, Miguel-Ángel Simón, Federico Sáez-Royuela, Carmen Baliellas, Rosa Morillas, Xavier Forns
OBJECTIVES: Interferon-free therapies have an improved safety and efficacy profile. However, data in elderly patients, who have frequently advanced liver disease, associated comorbidities, and use concomitant medications are scarce. The im of this study was to assess the effectiveness and tolerability of all-oral regimens in elderly patients in real-life clinical practice. METHODS: Retrospective analysis of hepatitis C virus (HCV) patients aged ≥65 years receiving interferon-free regimens within the Spanish National Registry (Hepa-C)...
June 6, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28557463/synthesis-of-dual-size-cellulose-polyvinylpyrrolidone-nanofiber-composites-via-one-step-electrospinning-method-for-high-performance-air-filter
#9
Ratna Balgis, Hiroyuki Murata, Yohsuke Goi, Takashi Ogi, Kikuo Okuyama, Li Bao
Dual-size nanofibers consisting of a random mixture of nano- and submicron-size nanofibers are promising structures for specific applications such as air filters because of their increased specific surface area and low pressure drop. Synthesis of dual-size nanofibers using one-step electrospinning was reported here for the first time. The formation of well-mixed nano- and submicron-size cellulose-polyvinylpyrrolidone nanofiber composites was accomplished utilizing the physical properties of TEMPO-oxidized cellulose nanofibers (i...
June 7, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28455267/metabotropic-glutamate-receptor-5-mediates-the-suppressive-effect-of-6-ohda-induced-model-of-parkinson-s-disease-on-liver-cancer
#10
Shao-Song Xi, Xiao-Xu Bai, Li Gu, Li-Hui Bao, Hui-Min Yang, Wei An, Xiao-Min Wang, Hong Zhang
Numerous epidemiological studies suggested that there is a variable cancer risk in patients with Parkinson's disease (PD). However, the underlying mechanisms remain unclear. In the present study, the role of metabotropic glutamate receptor 5 (mGluR5) has been investigated in 6-hydroxydopamine (6-OHDA)-induced PD combined with liver cancer both in vitro and in vivo. We found that PD cellular model from 6-OHDA-lesioned MN9D cells suppressed the growth, migration, and invasion of Hepa1-6 cells via down-regulation of mGluR5-mediated ERK and Akt pathway...
April 26, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28448436/role-of-archaeal-hera-protein-in-the-biology-of-the-bacterium-thermus-thermophilus
#11
Alba Blesa, Nieves G Quintans, Ignacio Baquedano, Carlos P Mata, José R Castón, José Berenguer
Intense gene flux between prokaryotes result in high percentage of archaeal genes in the genome of the thermophilic bacteria Thermus spp. Among these archaeal genes a homolog to the Sulfolobus spp. HerA protein appears in all of the Thermus spp. strains so far sequenced (HepA). The role of HepA in Thermus thermophilus HB27 has been analyzed using deletion mutants, and its structure resolved at low resolution by electron microscopy. Recombinant HepA shows DNA-dependent ATPase activity and its structure revealed a double ring, conically-shaped hexamer with an upper diameter of 150 Å and a bottom module of 95 Å...
April 27, 2017: Genes
https://www.readbyqxmd.com/read/28417612/fatigue-and-its-relationship-to-physical-activity-in-adolescents-and-young-adults-with-traumatic-brain-injury-a-cross-sectional-study
#12
Frederike van Markus-Doornbosch, Jorit Meesters, Laurika Kraaij, Ron Wolterbeek, Thea Vliet Vlieland
BACKGROUND: Physical activity (PA) in patients with traumatic brain injury (TBI) may be impaired leading to secondary health issues and limitations in participation. AIM: This study aims to determine the level of PA and its determinants in adolescents and young adults with TBI. DESIGN: Cross-sectional survey study. SETTING: Outpatient clinic of a rehabilitation centre. POPULATION: Discharged patients aged 12-39 years with a diagnosis of TBI >6 months treated in the rehabilitation centre between 2009-2012...
April 14, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28412617/selection-of-optimized-air-pollutant-filtration-technologies-for-petrochemical-industries-through-multiple-attribute-decision-making
#13
Parvin Moridi, Farideh Atabi, Jafar Nouri, Rasoul Yarahmadi
Selecting cost-effective and efficient air filtration technologies that ensure sustainable development is a challenge to national, regional and local policy makers. Various factors such as efficiency, maintainability, and design of the developed devices can affect the selection of optimized technologies. The present study aimed to select optimal technologies for air filtration devices in petrochemical industries through a multi-criteria decision-making (MADM) method based on a fuzzy model of Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS)...
April 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28407767/e167k-polymorphism-of-tm6sf2-gene-affects-cell-cycle-of-hepatocellular-carcinoma-cell-hepa-1-6
#14
Shuixian Du, Linlin Lu, Yingxia Miao, Wenwen Jin, Changfei Li, Yongning Xin, Shiying Xuan
BACKGROUND: Some studties reported that the polymorphism of TM6SF2 gene E167K affects the occurrence and the progression of hepatocytes carcinoma (hepatocellular, HCC). In oeder to investigate the effects of the polymorphism of TM6SF2 gene E167K in the pathogenesis of HCC, we explored its influence on the cell cycle in hepatocellular carcinoma cell HEPA1-6. METHODS: HEPA 1-6 cells which could respectively overexpress TM6SF2 wild type and E167K variant were cultured and HEPA 1-6 cells with zero load plasmids were used as matched control...
April 13, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28406362/evaluation-of-coverall-field-dry-aerosol-decontamination-methods-using-a-manikin
#15
J M Slagley, H Paschold, J M Engler
A full-size manikin dressed in fire-resistant coveralls coated in 120 g of sodium bicarbonate was randomly given one of three treatments for dry aerosol decontamination. The three treatments were high-efficiency particulate air (HEPA) vacuum, a commercially available air shower, and the no treatment control. Immediately after the treatment, the coveralls were doffed and an air sample was taken in the breathing zone of the manikin to estimate airborne total and respirable dust concentrations to an unprotected worker post decontamination...
July 2017: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/28399860/the-chinese-medicine-jc-001-enhances-the-chemosensitivity-of-lewis-lung-tumors-to-cisplatin-by-modulating-the-immune-response
#16
Meng-Hsien Chuang, Ming-Shiou Jan, Jinghua Tsai Chang, Fung-Jou Lu
BACKGROUND: JC-001 is a Chinese medicine that can modulate the immunity in Hepa 1-6 tumor-bearing mice, and we questioned whether JC-001 can serve as efficient adjuvant chemotherapy. We aimed to identify a novel approach for enhancing cis-diamminedichloroplatinum (II) (CDDP)-based chemotherapy by immunomodulation. METHODS: The anti-tumor activity in vitro was determined based on foci formation and a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay...
April 11, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28389537/airborne-pathogens-inside-automobiles-for-domestic-use-assessing-in-car-air-decontamination-devices-using-staphylococcus-aureus-as-the-challenge-bacterium
#17
Syed A Sattar, Bahram Zargar, Kathryn E Wright, Joseph R Rubino, M Khalid Ijaz
Family cars represent ∼74% of the yearly global output of motorized vehicles. With a life expectancy of ∼8 decades in many countries, the average person spends >100 min daily inside the confined and often shared space of the car, with exposure to a mix of potentially harmful microbes. Can commercial in-car microbial air decontamination devices mitigate the risk? Three such devices (designated devices 1 to 3) with HEPA filters were tested in the modified passenger cabin (3.25 m(3)) of a four-door sedan housed within a biosafety level 3 containment facility...
May 15, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28383761/endoplasmic-reticulum-stress-in-mice-increases-hepatic-expression-of-genes-carrying-a-premature-termination-codon-via-a-nutritional-status-independent-grp78-dependent-mechanism
#18
Nagakatsu Harada, Maiko Okuyama, Aya Yoshikatsu, Hironori Yamamoto, Saori Ishiwata, Chikako Hamada, Tomoyo Hirose, Masayuki Shono, Masashi Kuroda, Rie Tsutsumi, Jiro Takeo, Yutaka Taketani, Yutaka Nakaya, Hiroshi Sakaue
Nonsense-mediated mRNA decay (NMD) degrades mRNAs carrying a premature termination codon (PTC) in eukaryotes. Cellular stresses, including endoplasmic reticulum (ER) stress, inhibit NMD and up-regulate PTC-containing mRNA (PTC-mRNA) levels in several cell lines. However, whether similar effects exist under in vivo conditions that involve systemic nutritional status is unclear. Here we compared the effects of pharmacological induction of ER stress with those of nutritional interventions on hepatic PTC-mRNA levels in mice...
April 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28327529/mass-spectrometric-characteristics-of-prenylated-indole-derivatives-from-marine-derived-penicillium-sp-nh-sl
#19
Hui Ding, Wanjing Ding, Zhongjun Ma
Two prenylated indole alkaloids were isolated from the ethyl acetate extracts of a marine-derived fungus Penicillium sp. NH-SL and one of them exhibited potent cytotoxic activity against mouse hepa 1c1c7 cells. In order to detect other bioactive analogs, we used liquid chromatogram tandem mass spectrometry (LC-MS/MS) to analyze the mass spectrometric characteristics of the isolated compounds as well as the crude extracts. As a result, three other analogs were detected, and their structures were deduced according to the similar fragmentation patterns...
March 22, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28289825/the-highly-bioactive-molecule-and-signal-substance-6-formylindolo-3-2-b-carbazole-ficz-plays-bi-functional-roles-in-cell-growth-and-apoptosis-in-vitro
#20
Afshin Mohammadi-Bardbori, Farzaneh Bastan, Amin-Reza Akbarizadeh
The maintenance of cellular homeostasis is a complex process that is governed by the receipt of prototypical growth and death signals. The endogenous functions of aryl hydrocarbon receptor (AHR) in cellular homeostasis are not well understood. We aimed to establish whether the disturbance of endogenously activated AHR can influence cell growth, and if so, what mechanism(s) are involved. Cell growth was measured in mouse hepatoma Hepa-1 wild-type and cytochrome P4501A1 (CYP1A1)-deficient c37 cells. In other sets of experiments, HepG2 cells were exposed to different doses of FICZ (0...
March 13, 2017: Archives of Toxicology
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