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hepatitis c exposure

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https://www.readbyqxmd.com/read/28816587/dna-methylation-independent-growth-restriction-and-altered-developmental-programming-in-a-mouse-model-of-preconception-male-alcohol-exposure
#1
Richard C Chang, William M Skiles, S Chronister Sarah, Haiqing Wang, Gabrielle I Sutton, Yudhishtar S Bedi, Matthew Snyder, Charles R Long, Michael C Golding
The preconception environment is a significant modifier of dysgenesis and the development of environmentally-induced disease. To date, Fetal Alcohol Spectrum Disorders (FASDs) have been exclusively associated with maternal exposures, yet emerging evidence suggests male-inherited alterations in the developmental program of sperm may be relevant to the growth-restriction phenotypes of this condition. Using a mouse model of voluntary consumption, we find chronic preconception male ethanol exposure associates with fetal growth restriction, decreased placental efficiency, abnormalities in cholesterol trafficking, sex-specific alterations in the genetic pathways regulating hepatic fibrosis, and disruptions in the regulation of imprinted genes...
August 17, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28815392/strategy-for-cyp3a-induction-risk-assessment-from-preclinical-signal-to-human-a-case-example-of-a-late-stage-discovery-compound
#2
Jialin Mao, Peter Fan, Susan Wong, Jianshuang Wang, Moulay Hicham Alaoui Ismaili, Brian Dean, Cornelis E C A Hop, Matthew Wright, Yuan Chen
PURPOSE: The exposure of G2917 decreased by four-fold at oral doses of 100 mg/kg twice daily for seven days in cynomolgus monkeys. Additional investigative work was conducted to understand: (1) the causes for the significant reduction in G2917 exposure in monkeys; (2) the extrapolation of in vitro induction data to in vivo findings in monkeys, and (3) the relevance of this pre-clinical finding to humans at the projected human efficacious dose. METHODS: Pharmacokinetic and induction potency (in vitro and in vivo) of G2917 in monkeys, and the in vitro human induction potency were studied...
August 16, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28810416/is-disclosure-a-privilege-race-and-disclosure-patterns-of-hepatitis-c
#3
Alicia E Suarez
Research suggests that decisions to disclose hepatitis C status are affected by individual and interpersonal factors. However, no existing studies have examined the role of race in disclosure, despite the potential implications of being doubly marginalized on the basis of both race and hepatitis C status. Drawing on qualitative research with 53 persons with hepatitis C in the Southeastern United States, findings indicate that participants practiced four patterns of disclosure: activist disclosure, open disclosure, limited disclosure, and reluctant disclosure...
February 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28804856/toxic-effects-of-copper-on-liver-and-cholinesterase-of-clarias-gariepinus
#4
Siti Nadzirah Padrilah, Siti Aqlima Ahmad, Nur Adeela Yasid, Mohd Khalizan Sabullah, Hassan Mohd Daud, Ariff Khalid, Mohd Yunus Shukor
The release of pollutants, especially heavy metals, into the aquatic environment is known to have detrimental effects on such an environment and on living organisms including humans when those pollutants are allowed to enter the food chain. The aim of this study is to analyse the damage to Clarias gariepinus' liver caused by exposure to different concentrations of copper. In the present study, samples of C. gariepinus were exposed to sub-lethal copper sulphate (CuSO4) concentrations (from 0.2 to 20.0 mg/L) for 96 h...
August 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28803951/monocytes-inhibit-hepatitis-c-virus-induced-trail-expression-on-cd56-bright-nk-cells
#5
Dalila Mele, Stefania Mantovani, Barbara Oliviero, Giulia Grossi, Andrea Lombardi, Mario U Mondelli, Stefania Varchetta
BACKGROUND AND AIMS: Natural killer (NK) cells play an important role in the pathogenesis of HCV infection. We have previously shown that culture-derived HCV (HCVcc) enhance tumor necrosis-factor-related apoptosis-inducing ligand (TRAIL) expression on healthy but not on HCV-infected patient-derived NK cells, which was likely dependent on accessory cells. Here we sought mechanistic insights involved in altered TRAIL upregulation in this setting. METHODS: Peripheral blood mononuclear cells (PBMC) from controls and HCV-infected patients were exposed to HCVcc...
August 10, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28800195/pharmacokinetics-safety-and-tolerability-of-glecaprevir-and-pibrentasvir-in-healthy-white-chinese-and-japanese-adult-subjects
#6
Chih-Wei Lin, Sandeep Dutta, Bifeng Ding, Tianli Wang, Neddie Zadeikis, Armen Asatryan, Jens Kort, Andrew Campbell, Thomas Podsadecki, Wei Liu
Glecaprevir and pibrentasvir are direct-acting antiviral agents being developed as combination therapy for the treatment of chronic hepatitis C virus infection. The aim of the present studies was to assess the effect of race and ethnicity (white, Han Chinese, Japanese) on the pharmacokinetics and safety of multiple oral doses of glecaprevir and pibrentasvir given alone and in combination. Two multiple-dose, single-center, phase 1 studies were conducted in healthy adult male and female subjects (n = 170) of respective Asian and white race/ethnicity...
August 11, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28796629/hepatic-lipid-accumulation-and-nrf2-expression-following-perinatal-and-peripubertal-exposure-to-bisphenol-a-in-a-mouse-model-of-nonalcoholic-liver-disease
#7
Prajakta C Shimpi, Vijay R More, Maneesha Paranjpe, Ajay C Donepudi, Jaclyn M Goodrich, Dana C Dolinoy, Beverly Rubin, Angela L Slitt
BACKGROUND: Exposure to chemicals during critical windows of development may re-program liver for increased risk of nonalcoholic fatty liver disease (NAFLD). Bisphenol A (BPA), a plastics component, has been described to impart adverse effects during gestational and lactational exposure. Our work has pointed to nuclear factor E2-related factor 2 (Nrf2) being a modulator of hepatic lipid accumulation in models of NAFLD. OBJECTIVES: To determine if chemical exposure can prime liver for steatosis via modulation of NRF2 and epigenetic mechanisms...
August 4, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28789671/hepatitis-c-infection-epidemiology-in-mongolia-protocol-of-a-systematic-review-and-meta-analysis
#8
Karima Chaabna, Laith J Abu-Raddad
BACKGROUND: Hepatitis C virus (HCV) morbidity appears to be high in Mongolia. Yet, the scale and nature of the infection burden is not well-understood. Our study's objective is to systematically review and synthetize all available epidemiological data on HCV antibody (Ab) prevalence, ribonucleic acid (RNA) prevalence, incidence, risk factors to HCV exposure, and circulating HCV genotypes/subtypes among different at-risk populations. Additionally, we aim to estimate national population-level HCV-Ab prevalence and the number of HCV chronically infected individuals in the population of Mongolia...
August 8, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28764121/ahr-and-cyp1a-expression-link-historical-contamination-events-to-modern-day-developmental-effects-in-the-american-alligator
#9
Matthew D Hale, Thomas M Galligan, Thomas R Rainwater, Brandon C Moore, Philip M Wilkinson, Louis J Guillette, Benjamin B Parrott
The aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor that initiates a transcriptional pathway responsible for the expression of CYP1A subfamily members, key to the metabolism of xenobiotic compounds. Toxic planar halogenated aromatic hydrocarbons, including dioxin and PCBs, are capable of activating the AHR, and while dioxin and PCB inputs into the environment have been dramatically curbed following strict regulatory efforts in the United States, they persist in the environment and exposures remain relevant today...
July 27, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28763308/revascularization-strategies-and-in-hospital-management-in-acute-coronary-syndromes-complicated-by-hemophilia-a-or-hemophilia-b
#10
Matthew J Reilley, Anne Blair, William H Matthai, Rolando Vega, Meghan Buckley, Phyllis A Gimotty, Patrick F Fogarty
: Among adult patients with hemophilia A and hemophilia B the emergent management of acute coronary syndromes (ACSs) is challenging, and exposure to antithrombotic agents and/or revascularization procedures may confer an enhanced risk of bleeding. We sought to identify clinical characteristics and in-hospital outcomes among ACS patients with hemophilia A/hemophilia B, compared with matched noncoagulopathic ACS controls. Case discharges from the Nationwide Inpatient Sample, Healthcare Cost and Utilization Project, Agency for Healthcare Research and Quality (1998-2011) had International Classification of Diseases, 9th Revision codes for hemophilia A/hemophilia B and ACS...
July 29, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28758742/effects-of-c-glycosides-from-apios-americana-leaves-against-oxidative-stress-during-hyperglycemia-through-regulating-mitogen-activated-protein-kinases-and-nuclear-factor-erythroid-2-related-factor-2
#11
Fujie Yan, Yunyun Yang, Lushuang Yu, Xiaodong Zheng
Main components of Apios americana leaves extract (ALE) were flavonoid C-glycosides, including vitexin (46.7%), schaftoside (18.9%), and orientin (4.32%). In vitro, ALE restored glucose consumption, glucose uptake, and glycogen content in glucose-induced hepatic cells. Exposure of HepG2 cells to high glucose resulted in reactive oxygen species and O2(-) accumulation, while ALE alleviated these increases by 47 ± 0.68 and 68 ± 0.74%, respectively. Glucose increased c-Jun N-terminal kinase (JNK) and decreased extracellular signal-regulated kinases 1 and 2 (ERK1/2) and p38 phosphorylation, while ALE reduced p-JNK and p-p38 but not p-ERK1/2, accompanied by nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1, and NAD(P)H quinine oxidoreductase 1 downregulation...
August 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28758069/investigating-the-application-of-a-nitroreductase-expressing-transgenic-zebrafish-line-for-high-throughput-toxicity-testing
#12
Anna C Chlebowski, Jane K La Du, Lisa Truong, Staci L Massey Simonich, Robert L Tanguay
Nitroreductase enzymes are responsible for the reduction of nitro functional groups to amino functional groups, and are found in a range of animal models, zebrafish (Danio rerio) excluded. Transgenic zebrafish models have been developed for tissue-specific cell ablation, which use nitroreductase to ablate specific tissues or cell types following exposure to the non-toxic pro-drug metronidazole (MTZ). When metabolized by nitroreductase, MTZ produces a potent cytotoxin, which specifically ablates the tissue in which metabolism occurs...
2017: Toxicology Reports
https://www.readbyqxmd.com/read/28754847/clinical-study-on-the-relationship-between-hepatitis-b-virus-infection-and-risk-of-breast-cancer-a-large-sized-case-control-and-single-center-study-in-southwest-of-china
#13
Lin-Jie Lu, Vishnu Prasad Adhikari, Chun-Xia Zhao, He Wu, Wei Dai, Xin Li, Hong-Yuan Li, Guo-Sheng Ren, Kai-Nan Wu, Ling-Quan Kong
PURPOSE: Chronic hepatitis C virus (HCV) infection is reported to be associated with early-onset breast cancer, while, as a hepadnavirus, hepatitis B virus(HBV) infection is more common than HCV in China. In this article, it is aimed to study the relationship between HBV infection and risk of breast cancer in China. METHODS: The clinical data of 2452 cases of initially diagnosed breast cancer and 1926 cases of benign breast disease (as controls) with the consecutive reports of HBV serological markers and liver function tests, available in the Electronic Medical Records of the Breast Cancer Center of Chongqing, the southwest of China, from January 2011 to March 2015, were collected for analysis...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28749822/a-comparison-of-hepatitis-b-virus-infection-in-hiv-infected-and-hiv-uninfected-participants-enrolled-in-a-multi-national-clinical-trial-hptn-052
#14
Amy E Greer, San-San Ou, Ethan Wilson, Estelle Piwowar-Manning, Michael S Forman, Marybeth McCauley, Theresa Gamble, Cholticha Ruangyuttikarn, Mina C Hosseinipour, Nagalingeswaran Kumarasamy, Mulinda Nyirenda, Beatriz Grinsztejn, Jose Henrique Pilotto, Natthapol Kosashunhanan, Marineide Gonçalves de Melo, Joseph Makhema, Victor Akelo, Ravindre Panchia, Sharlaa Badal-Faesen, Ying Q Chen, Myron S Cohen, Susan H Eshleman, Chloe L Thio, Alexandra Valsamakis
OBJECTIVE: Data comparing hepatitis B virus (HBV) infection in HIV-infected [HIV(+)], and HIV-uninfected [HIV(-)] individuals recruited into the same study are limited. HBV infection status and chronic hepatitis B (cHB) were characterized in a multi-national clinical trial: HIV Prevention Trials Network (HPTN 052). METHOD: HBV infection status at enrollment was compared between HIV(+) (N=1241) and HIV(-) (N=1232) from seven HBV-endemic countries. Hepatitis B e antigen (HBeAg) and plasma HBV DNA were determined in cHB...
July 26, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28748198/abacavir-dolutegravir-lamivudine-triumeq-induced-liver-toxicity-in-a-human-immunodeficiency-virus-infected-patient
#15
Erin S Christensen, Rupali Jain, Alison C Roxby
Drug-induced liver injury related to Triumeq (abacavir/lamivudine/dolutegravir) has not been reported in clinical trials. We report a case of hepatotoxicity related to Triumeq exposure in a human immunodeficiency virus-infected patient. Clinicians should remain aware of the risk for acute and late-onset hepatitis with these agents. Close monitoring is recommended.
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28743159/chronic-hepatitis-c-virus-infection-and-neurocognitive-function-in-adult-survivors-of-childhood-cancer
#16
Adrienne Studaway, Rohit P Ojha, Tara M Brinkman, Nan Zhang, Malek Baassiri, Pia Banerjee, Matthew J Ehrhardt, Deokumar Srivastava, Leslie L Robison, Melissa M Hudson, Kevin R Krull
BACKGROUND: Cancer survivors transfused with blood products before reliable screening for hepatitis C virus (HCV) are at risk for infection. This study examined the impact of HCV on neurocognitive function and health-related quality of life (HRQOL) among adult survivors of childhood cancer. METHODS: Neurocognitive testing was conducted for 836 adult survivors of childhood cancer (mean age, 35 years [standard deviation, 7.4 years]; time since diagnosis, 29 years [standard deviation, 6...
July 25, 2017: Cancer
https://www.readbyqxmd.com/read/28741978/effects-of-co-exposure-to-atrazine-and-ethanol-on-the-oxidative-damage-of-kidney-and-liver-in-wistar-rats
#17
Sunny O Abarikwu, Queen C Duru, Rex-Clovis C Njoku, Benjamin A Amadi, Aseme Tamunoibuomie, Enebimoere Keboh
Both ethanol (EtoH) and atrazine (ATZ) have hepatic and nephro-toxic effects in rats. In the present study, the toxicity of EtoH (5 g kg(-1)) on the kidney and liver in the absence or in the presence of different doses of ATZ (50, 100, 300 mg kg(-1)) was evaluated after 21 days in rats. Results showed that the mixture effects on catalase and superoxide dismutase activities were more severe in both tissues compared to EtoH alone, especially as the dose of ATZ was increased. Hepatic malondialdehyde level (an index of lipid peroxidation) was increased from 20...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28741977/reduction-in-the-presence-of-cryoglobulins-over-time-in-the-hemodialysis-treatment
#18
Tainá Mosca, Simone Sanches Arcuri, Luiz Antônio Miorin, Andrelita de Oliveira Cristiano, Yvoty Alves Dos Santos Sens, Wilma Carvalho Neves Forte
BACKGROUND: The presence of cryoglobulins in patients with chronic kidney disease (CKD) on hemodialysis is well described. However, the generation of cryoglobulins during the dialysis treatment has yet to be established. The aim of the present study was to determine the presence of serum cryoglobulins over time in the dialysis treatment in patients with CKD not infected with hepatitis C virus (HCV). METHOD: Peripheral blood samples were collected at the beginning of dialysis treatment and at 30, 60, 90 and 120 days afterwards...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28734790/organ-weights-and-histopathology-of-double-crested-cormorants-phalacrocorax-auritus-dosed-orally-or-dermally-with-artificially-weathered-mississippi-canyon-252-crude-oil
#19
Kendal E Harr, Drury R Reavill, Steven J Bursian, Dave Cacela, Fred L Cunningham, Karen M Dean, Brian S Dorr, Katie C Hanson-Dorr, Kate Healy, Katherine Horak, Jane E Link, Susan Shriner, Robert E Schmidt
A series of toxicity tests were conducted to assess the effects of low to moderate exposure to artificially weathered Deepwater Horizon Mississippi Canyon 252 crude oil on representative avian species as part of the Natural Resource Damage Assessment. The present report summarizes effects of oral exposure (n=26) of double-crested cormorants (DCCO; Phalacrocorax auritus) to 5 or 10ml oil kg(-1) day(-1) for up to 21 days or dermal application (n=25) of 13ml oil to breast and back feathers every three days totaling 6 applications in 21 days on organ weights and histopathology...
July 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28731677/an-evaluation-of-optimal-pegylation-strategies-for-maximizing-the-lymphatic-exposure-and-antiviral-activity-of-interferon-after-subcutaneous-administration
#20
Linda J Chan, Orlagh M Feeney, Nathania J Leong, Victoria M Mcleod, Christopher J H Porter, Charlotte C Williams, Lisa M Kaminskas
Interferon α2 is an antiviral/antiproliferative protein that is currently used to treat hepatitis C infections and several forms of cancer. Two PEGylated variants of interferon α2 (containing 12 and 40 kDa PEGs) are currently marketed and display longer plasma circulation times than unmodified interferon. With increasing realization that the lymphatic system plays an important role in the extrahepatic replication of the hepatitis C virus and in the metastatic dissemination of cancers, this study sought to evaluate PEGylation strategies to optimally enhance the antiviral activity and plasma and lymphatic exposure of interferon after subcutaneous administration in rats...
July 21, 2017: Biomacromolecules
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