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https://www.readbyqxmd.com/read/28343379/hepatitis-c-virus-nonstructural-5a-protein-hcv-ns5a-inhibits-hepatocyte-apoptosis-through-the-nf-kappab-mir-503-bcl-2-pathway
#1
Xie Zheng Yuan, Xiao Zhi Hua, Wang Fen Fen
The nonstructural protein 5A (NS5A) encoded by the human hepatitis C virus (HCV) RNA genome is a multifunctional phosphoprotein. To analyse the influence of NS5A on apoptosis, we established an Hep-NS5A cell line (HepG2 cells that stably express NS5A) and induced apoptosis using tumour necrosis factor (TNF)-alpha. We utilised the MTT assay to detect cell viability, real-time quantitative polymerase chain reaction and Western blot to analyse gene and protein expression, and a luciferase reporter gene experiment to investigate the targeted regulatory relationship...
March 27, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28333112/synthesis-and-cytotoxicity-of-n-substituted-dibenzo-a-j-xanthene-3-11-dicarboxamide-derivatives
#2
Yongbin Song, Yihui Yang, Lijun Wu, Naiwei Dong, Shang Gao, Hongrui Ji, Xia Du, Bo Liu, Guoyou Chen
In order to study the structure-activity relationships of xanthene derivatives, four series of N-substituted 14-aryl-14H-dibenzo[a,j]xanthene-3,11-dicarboxamide derivatives were synthesized. The structures of all compounds were identified by ¹H-NMR, HR-MS and IR spectra, in which compounds 6a-h were further identified by (13)C-NMR spectra. The in vitro antitumor activity of the synthesized compounds was tested by MTT assay. Most of them displayed strong inhibitory activity on human hepatocellular carcinoma cell lines (SK-HEP-1, HepG2 and SMMC-7721 cells) and acute promyelocytic leukemia NB4 cells...
March 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28323126/elita-consensus-statements-on-use-of-daas-in-liver-transplant-candidates-and-recipients
#3
REVIEW
Luca S Belli, Christophe Duvoux, Thomas Berg, Mario Strazzabosco, Stefano Fagiuoli, Saye Khoo, Georges Philippe Pageaux, Isabelle Colle, Massimo Puoti, Audrey Coilly, Didier Samuel, Marina Berenguer
The advent of safe and highly effective direct acting antivirals (DAA) had huge implications for the HCV transplant field and changed our management of both, patients on the waiting list and those with HCV graft reinfection after Liver Transplantation (LT). When treating HCV infection before LT, HCV reinfection of the graft may be prevented in nearly all patients. In addition some candidates show a remarkable clinical improvement and are possibly delisted. Alternatively, HCV infection can be treated post LT either soon after the transplant, taking advantage of the removal of the infected native liver, or at the time of disease recurrence as done in the past...
March 18, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28321779/transfection-of-bovine-fetal-fibroblast-with-polyethylenimine-pei-nanoparticles-effect-of-particle-size-and-presence-of-fetal-bovine-serum-on-transgene-delivery-and-cytotoxicity
#4
D O Forcato, A E Fili, F E Alustiza, J M Lázaro Martínez, S Bongiovanni Abel, M F Olmos Nicotra, A P Alessio, N Rodríguez, C Barbero, P Bosch
The development of efficient transfection protocols for livestock cells is crucial for implementation of cell-based transgenic methods to produce genetically modified animals. We synthetized fully deacylated linear 22, 87 and 217 kDa polyethylenimine (PEI) nanoparticles and compared their transfection efficiency and cytotoxicity to commercial branched 25 kDa PEI and linear 58 kDa poly(allylamine) hydrochloride. We studied the effect of PEI size and presence of serum on transfection efficiency on primary cultures of bovine fetal fibroblasts and established cells lines (HEK 293 and Hep G2)...
March 20, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28286322/secreted-phosphoprotein-24kd-spp24-inhibits-growth-of-hepatocellular-carcinoma-in-vivo
#5
Lifeng Lao, Jia Shen, Haijun Tian, Guibin Zhong, Samuel S Murray, Jeffrey C Wang
Several studies have shown that secreted phosphoprotein 24kD (Spp24) inhibits tumor growth. However, the effects of spp24 on hepatocellular carcinoma are not quite clear. In this study, we observed the inhibitory effect of spp24 on hepatocellular carcinoma in vivo. A subcutaneous hepatocellular carcinoma mice model was established by using Hep G2 cells. After sacrifice at day 40, tumor growth was assessed and tumor cell apoptosis and tumor cells proliferation were assessed by TUNEL assay and immunochemical analysis, respectively...
March 4, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28272978/novel-recombinant-dna-vaccine-candidates-for-human-respiratory-syncytial-virus-preclinical-evaluation-of-immunogenicity-and-protection-efficiency
#6
Mohamed A Farrag, Haitham M Amer, Peter Öhlschläger, Maaweya E Hamad, Fahad N Almajhdi
The development of safe and potent vaccines for human respiratory syncytial virus (HRSV) is still a challenge for researchers worldwide. DNA-based immunization is currently a promising approach that has been used to generate human vaccines for different age groups. In this study, novel HRSV DNA vaccine candidates were generated and preclinically tested in BALB/c mice. Three different versions of the codon-optimized HRSV fusion (F) gene were individually cloned into the pPOE vector. The new recombinant vectors either express full-length (pPOE-F), secretory (pPOE-TF), or M282-90 linked (pPOE-FM2) forms of the F protein...
March 8, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28253196/cytotoxicity-and-cytochrome-p450-inhibitory-activities-of-clinacanthus-nutans
#7
Suk Yen Quah, Jin Han Chin, Gabriel Akyirem Akowuah, Shaik Ibrahim Khalivulla, Siew Wei Yeong, Mandumpal Chacko Sabu
BACKGROUND: Clinacanthus nutans Lindau (family: Acanthaceae), also known as "Sabah Snake Grass" or "Belalai Gajah" in Malaysia, has been widely used by Malaysians due to its anticancer property. However, the anticancer activity of C. nutans leaves extract and its safe use need to be further investigated. The objectives of the present study were to evaluate the cytotoxic effects of methanol leaves extract of C. nutans in various human cancer cell lines and to evaluate the in vitro effect of C...
March 1, 2017: Drug Metabolism and Personalized Therapy
https://www.readbyqxmd.com/read/28251453/people-s-perception-on-impacts-of-hydro-power-projects-in-bhagirathi-river-valley-india
#8
G C S Negi, Disha Punetha
The people's perception on environmental and socio-economic impacts due to three hydro-electric projects (HEPs; commissioned and under construction) were studied in the north-west Indian Himalaya. Surveys among 140 project-affected people (PAPs) using a checklist of impacts indicate that among the negative impacts, decrease in flora/fauna, agriculture, flow of river, aesthetic beauty; and increase in water pollution, river bed quarrying for sand/stone, human settlement on river banks and social evils; and among the positive impacts, increase in standard of living, road connectivity, means of transport, public amenities, tourism and environmental awareness were related with HEPs...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28248814/the-use-of-ancillary-stains-in-the-diagnosis-of-barrett-esophagus-and-barrett-esophagus-associated-dysplasia-recommendations-from-the-rodger-c-haggitt-gastrointestinal-pathology-society
#9
Amitabh Srivastava, Henry Appelman, Jeffrey D Goldsmith, Jon M Davison, John Hart, Alyssa M Krasinskas
Barrett esophagus (BE) is a known risk factor for the development of esophageal adenocarcinoma. Pathologists play a critical role in confirming the diagnosis of BE and BE-associated dysplasia. As these diagnoses are not always straightforward on routine hematoxylin and eosin-stained slides, numerous ancillary stains have been used in an attempt to help pathologists confirm the diagnosis. On the basis of an in-depth review of the literature, the Rodger C. Haggitt Gastrointestinal Pathology Society provides recommendations regarding the use of ancillary stains in the diagnosis of BE and BE-associated dysplasia...
February 28, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28245248/real-life-data-on-potential-drug-drug-interactions-in-patients-with-chronic-hepatitis-c-viral-infection-undergoing-antiviral-therapy-with-interferon-free-daas-in-the-piter-cohort-study
#10
Loreta A Kondili, Giovanni Battista Gaeta, Donatella Ieluzzi, Anna Linda Zignego, Monica Monti, Andrea Gori, Alessandro Soria, Giovanni Raimondo, Roberto Filomia, Alfredo Di Leo, Andrea Iannone, Marco Massari, Romina Corsini, Roberto Gulminetti, Alberto Gatti Comini, Pierluigi Toniutto, Denis Dissegna, Francesco Paolo Russo, Alberto Zanetto, Maria Grazia Rumi, Giuseppina Brancaccio, Elena Danieli, Maurizia Rossana Brunetto, Liliana Elena Weimer, Maria Giovanna Quaranta, Stefano Vella, Massimo Puoti
BACKGROUND: There are few real-life data on the potential drug-drug interactions (DDIs) between anti-HCV direct-acting antivirals (DAAs) and the comedications used. AIM: To assess the potential DDIs of DAAs in HCV-infected outpatients, according to the severity of liver disease and comedication used in a prospective multicentric study. METHODS: Data from patients in 15 clinical centers who had started a DAA regimen and were receiving comedications during March 2015 to March 2016 were prospectively evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28229827/anti-la-positive-anti-ro-negative-subset-of-primary-sj%C3%A3-gren-s-syndrome-anti-la-is-a-reality-but-is-the-disease
#11
Debashish Danda, Rohan Sharma, Dat Truong, Kristi A Koelsch, Biji T Kurien, Harini Bagavant, Umesh Deshmukh, C Erick Kaufman, David M Lewis, Donald U Stone, Lida Radfar, Astrid Rasmussen, Kathy L Sivils, Robert H Scofield
OBJECTIVES: To characterise the serological and clinical findings in primary Sjögren's syndrome in which anti-La was found without anti-Ro. We hypothesised that a significant portion of these are falsely negative for anti-Ro60. METHODS: Twenty-nine sera from primary Sjögren's syndrome patients were tested for antibodies directed against La and Ro. Anti-La was detected using bovine La treated with or without DNAase and RNAase to identify potential false positivity...
February 20, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28219155/-genotype-distribution-of-human-enteroviruses-isolated-from-swage-in-shanghai-during-year-2013-2014
#12
Y Y Li, J Lu, X Z Wang, Y Y Yang, J Fei, L P Zhang, Z Li, C S Li, Y Zuo
Objective: To explore the time and genotype distribution of human enterovirus (HEV) isolated from sewage in Shanghai in 2013-2014. Methods: One sewage sample each was collected from two local sewage plants located in Minhang District and Jiading District on the same day at the day 24-28 of every month from 2013 to 2014. Each sample weighed 1 L. The specimens were concentrated by anionic membrane absorption, eluted with beef extract solution, and then used to inoculate RD, HEp-2, and L20B cell lines. A total of 249 enterovirus strains were isolated from sewage samples during the study period, including 185 non-polio enterovirus (NPEV) and 64 poliovirus (PV) strains, which were identified as vaccine strains...
February 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28211090/development-of-proteinuria-and-focal-segmental-glomerulosclerosis-during-direct-acting-antiviral-therapy-for-hepatitis-c-virus-infection-hep-16-2474-r1
#13
Jonathan J Hogan, Mary Ann Lim, Matthew B Palmer, Roy D Bloom, Raymond T Chung, Meghan E Sise
Focal segmental glomerulosclerosis (FSGS) presents as proteinuric kidney disease and is associated with poor long-term renal outcomes. Here we describe three patients with solid organ transplants and normal baseline kidney function who developed FSGS during direct acting antiviral therapy for hepatitis C virus infection. This article is protected by copyright. All rights reserved.
February 17, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28191864/overexpression-of-nad-p-h-quinone-oxidoreductase-1-inhibits-hepatocellular-carcinoma-cell-proliferation-and-induced-apoptosis-by-activating-ampk-pgc-1%C3%AE-pathway
#14
Xin Zhang, Kun Han, Dong-Hong Yuan, Cun-Ying Meng
Hepatocellular carcinoma (HCC) is the most common lethal malignancy and a leading cause of malignancy-associated death in many countries, but mainly in Asia. Expression of the NAD(P)H:quinone oxidoreductase 1 (NQO1) protein is involved in the growth of various human cancers, including HCC. NQO1 is considered an inhibitor of cancers. The present study aimed to investigate the function and mechanism of NQO1 in HCC. In this study, we found that NQO1 overexpression decreased HCC cell SK-hep-1 and Hep3B cell proliferation and induced apoptosis...
February 13, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28167263/asialoglycoprotein-receptor-targeted-liposomes-loaded-with-a-norcantharimide-derivative-for-hepatocyte-selective-targeting
#15
Xiaolin Liu, Mengting Han, Jiawen Xu, Sicong Geng, Yu Zhang, Xaohui Ye, Jingxin Gou, Tian Yin, Haibing He, Xing Tang
In order to overcome the shortcomings associated with the clinical application of norcantharidin (NCTD), including intense irritation and a short half-life, and to obtain a hepatocyte-selective liposome system with high encapsulation efficiency (EE) and low leakage, we synthesized a C14 alkyl chain norcantharimide derivative of NCTD (2-tetradecylhexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione, N-14NCTDA). Asialoglycoprotein receptor-targeted, galactosylated liposomes loaded with N-14NCTDA (GAL-Lipo) were prepared by the lipid film hydration method...
February 4, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28158282/the-effects-of-run-of-river-hydroelectric-power-schemes-on-invertebrate-community-composition-in-temperate-streams-and-rivers
#16
Gary S Bilotta, Niall G Burnside, Matthew D Turley, Jeremy C Gray, Harriet G Orr
Run-of-river (ROR) hydroelectric power (HEP) schemes are often presumed to be less ecologically damaging than large-scale storage HEP schemes. However, there is currently limited scientific evidence on their ecological impact. The aim of this article is to investigate the effects of ROR HEP schemes on communities of invertebrates in temperate streams and rivers, using a multi-site Before-After, Control-Impact (BACI) study design. The study makes use of routine environmental surveillance data collected as part of long-term national and international monitoring programmes at 22 systematically-selected ROR HEP schemes and 22 systematically-selected paired control sites...
2017: PloS One
https://www.readbyqxmd.com/read/28155603/advances-in-chemistry-and-pharmacology-of-triterpenoid-synthetic-dimers
#17
Barbara Bednarczyk-Cwynar, Andrzej Günther
The publication focuses on advances in chemistry and pharmacology of synthetic triterpenoid dimers, obtained from natural compounds. Synthetic triterpenoid dimers were divided into specific subgroups basing on the structure of main triterpenoid monomeric skeleton. Synthetic triterpenoid derivatives of dimeric structure can be obtained through the covalent linkage of the C-3 hydroxyl or another group, via the C-2 atom or the C-17 carboxyl group (mainly anhydrides, amides or esters). Some triterpenes can undergo chemical transformations leading to the formation of cyclic dimers or other types of dimers...
February 2, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28141668/check-hep-c-a-community-based-approach-to-hepatitis-c-diagnosis-and-linkage-to-care-in-high-risk-populations
#18
Mary M Ford, Nirah Johnson, Eric Rude, Fabienne Laraque, Jay K Varma, Holly Hagan
CONTEXT: In New York City (NYC), an estimated 146 500 people, or 2.4% of the adult population, have chronic hepatitis C virus (HCV) infection and half may be unaware of their infection. Despite a 2014 state law requiring health care providers to screen for HCV infection in primary care settings, many high-risk HCV-positive persons are not, and a large proportion of those screened do not receive RNA testing to confirm infection, or antiviral therapies. OBJECTIVE: The NYC Department of Health's Check Hep C program was designed to increase hepatitis C diagnosis and improve linkage to care at community-based organizations...
January 30, 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/28137809/a-short-double-stapled-peptide-inhibits-respiratory-syncytial-virus-entry-and-spreading
#19
Vanessa Gaillard, Marie Galloux, Dominique Garcin, Jean-François Eléouët, Ronan Le Goffic, Thibaut Larcher, Marie-Anne Rameix-Welti, Abdelhak Boukadiri, Julien Héritier, Jean-Manuel Segura, Elodie Baechler, Miriam Arrell, Geneviève Mottet-Osman, Origène Nyanguile
Synthetic peptides derived from the heptad repeat (HR) of fusion (F) proteins can be used as dominant negative inhibitors to inhibit the fusion mechanism of class I viral F proteins. Here, we have performed a stapled peptide scan across the HR2 domain of the RSV F protein with the aim to identify a minimal domain capable of disrupting the formation of the post fusion six helix bundle required for viral cell entry. Constraining the peptides with a single staple was not sufficient to inhibit RSV infection. However, the insertion of double staples led to the identification of novel short stapled peptides, which display nanomolar potency in HEp-2 cells, and are exceptionally robust to proteolytic degradation...
January 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28137721/transcriptional-functional-and-mechanistic-comparisons-of-stem-cell-derived-hepatocytes-heparg-cells-and-3d-human-hepatocyte-spheroids-as-predictive-in-vitro-systems-for-drug-induced-liver-injury
#20
Catherine C Bell, Volker M Lauschke, Sabine U Vorrink, Henrik Palmgren, Roger Duffin, Tommy B Andersson, Magnus Ingelman-Sundberg
Reliable and versatile hepatic in vitro systems for the prediction of drug pharmacokinetics and toxicity are essential constituents of preclinical safety assessment pipelines for new medicines. Here, we compared three emerging cell systems, hepatocytes derived from induced pluripotent stem cells (hiPS-Hep), HepaRG cells and 3D primary human hepatocyte (PHH) spheroids at transcriptional and functional levels in a multi-center study to evaluate their potential as predictive models for drug-induced hepatotoxicity...
January 30, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
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