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https://www.readbyqxmd.com/read/28098838/role-of-udp-glucuronosyltransferase-1a1-in-the-metabolism-and-pharmacokinetics-of-silymarin-flavonolignans-in-patients-with-hcv-and-nafld
#1
Ying Xie, Sonia R Miranda, Janelle M Hoskins, Roy L Hawke
Silymarin is the most commonly used herbal medicine by patients with chronic liver disease. Silymarin flavonolignans undergo rapid first-pass metabolism primarily by glucuronidation. The aims of this investigation were: (1) to determine the association of UGT1A1*28 polymorphism with the area under the plasma concentration-time curves (AUCs) for silybin A (SA) and silybin B (SB); (2) to evaluate the effect of UGT1A1*28 polymorphism on the profile of flavonolignan glucuronide conjugates found in the plasma; and (3) to investigate the role of UGT1A1 enzyme kinetics on the pharmacokinetics of SA and SB...
January 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28066880/population-pharmacokinetic-analysis-of-daclatasvir-in-subjects-with-chronic-hepatitis-c-virus-infection
#2
Phyllis Chan, Hanbin Li, Li Zhu, Marc Bifano, Timothy Eley, Mayu Osawa, Takayo Ueno, Eric Hughes, Richard Bertz, Tushar Garimella, Malaz AbuTarif
BACKGROUND AND OBJECTIVE: Daclatasvir is a potent, pangenotypic once-daily hepatitis C virus (HCV) NS5A inhibitor that is approved for the treatment of chronic HCV infection. The objective of this analysis was to characterize the pharmacokinetics of daclatasvir in subjects with chronic HCV infection. METHODS: A population pharmacokinetic (PPK) model was developed to evaluate effects of covariates on daclatasvir pharmacokinetics in subjects with chronic HCV infection (n = 2149 from 11 studies)...
January 9, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28065804/limited-naturally-occurring-escape-in-broadly-neutralizing-antibody-epitopes-in-hepatitis-c-glycoprotein-e2-and-constrained-sequence-usage-in-acute-infection
#3
Chaturaka Rodrigo, Melanie R Walker, Preston Leung, Auda A Eltahla, Jason Grebely, Gregory J Dore, Tanya Applegate, Kimberly Page, Sunita Dwivedi, Julie Bruneau, Meghan D Morris, Andrea L Cox, William Osburn, Arthur Y Kim, Janke Schinkel, Naglaa H Shoukry, Georg M Lauer, Lisa Maher, Margaret Hellard, Maria Prins, Fabio Luciani, Andrew R Lloyd, Rowena A Bull
Broadly neutralizing antibodies have been associated with spontaneous clearance of the hepatitis C infection as well as viral persistence by immune escape. Further study of neutralizing antibody epitopes is needed to unravel pathways of resistance to virus neutralization, and to identify conserved regions for vaccine design. All reported broadly neutralizing antibody (BNAb) epitopes in the HCV Envelope (E2) glycoprotein were identified. The critical contact residues of these epitopes were mapped onto the linear E2 sequence...
January 5, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28058039/assessment-of-il-28-rs12979860-and-rs8099917-polymorphisms-in-a-cohort-of-cuban-chronic-hcv-genotype-1b-patients
#4
Daniel Palenzuela Gardón, Isabel Alicia Guillen, Julio R Fernández, Hamlet Camacho, Zurina Cinza Estevez, Santiago Dueñas, Liz Alvares-Lajonchere, Yalena Amador, Gillian Martinez-Donato, Junsong Han, Zhiming Zhang, Xiaona Zhang, Yang Gao, Juan Roca Campaña, Lidia I Novoa
Hepatitis C virus (HCV) is a significant global public health problem with >185 million infections worldwide. A series of genome-wide association studies (GWAS) has identified IL-28B polymorphisms as a predictor of sustained virologic response (SVR), as well as spontaneous clearance in chronic HCV genotype 1 patients. The objective of this work was to evaluate the prevalence of IL-28B rs12979860 and rs8099917 polymorphisms in Cuban chronic HCV patients. The study cohort included 73 chronic HCV patients treated with concomitant administration of CIGB-230 and nonpegylated IFN-α plus ribavirin (non-pegIFN-α/R) antiviral therapy...
December 16, 2016: Journal of Biomolecular Techniques: JBT
https://www.readbyqxmd.com/read/28057801/a-simple-pcr-rflp-method-for-genotyping-of-ifnl4-rs368234815-polymorphism-in-patients-with-chronic-hepatitis-c
#5
Mohammad Pouryasin, Heidar Sharafi, Bita Behnava, Seyed Moayed Alavian, Maryam Keshvari, Ali Pouryasin
BACKGROUND: The IFNL4 rs368234815 polymorphism plays a prominent role in spontaneous and treatment-induced clearance of hepatitis C virus (HCV) infection. This study aimed to develop a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method for assessment of rs368234815 polymorphism. METHODS: We genotyped the rs368234815 polymorphism in 87 patients with chronic HCV by PCR sequencing and PCR-RFLP methods, simultaneously. RESULTS: Genotyping of IFNL4 rs368234815 via PCR-RFLP was concordant with PCR sequencing in all 87 individuals (100%)...
January 4, 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/28009018/hbv-hcv-dual-infection-impacts-viral-load-antibody-response-and-cytokine-expression-differently-from-hbv-or-hcv-single-infection
#6
Fei Chen, Jian Zhang, Bo Wen, Shan Luo, Yingbiao Lin, Wensheng Ou, Fengfan Guo, Ping Tang, Wenpei Liu, Xiaowang Qu
Hepatitis B virus/hepatitis C virus (HBV/HCV) dual infection is common among high-risk individuals. To characterize the virological and immunological features of patients with HBV/HCV dual infection, we enrolled 1,049 individuals who have been identified as injection drug users. Patients were divided into single and dual infection groups according to the serological markers. We found the average HCV RNA level was significantly lower; however, HBV viral load was significantly higher in HBV/HCV dual-infected patients (n = 42) comparing HCV single infection (n = 340) or HBV single infection (n = 136)...
December 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27997563/daas-rapidly-reduce-inflammation-but-increase-serum-vegf-level-a-rationale-for-tumor-risk-during-anti-hcv-treatment
#7
Rosanna Villani, Antonio Facciorusso, Francesco Bellanti, Rosanna Tamborra, Annamaria Piscazzi, Matteo Landriscina, Gianluigi Vendemiale, Gaetano Serviddio
BACKGROUND: Novel direct-acting antivirals (DAAs) have completely changed the panorama of hepatitis C due to their high efficacy and optimal safety profile. Unfortunately, an unexpectedly high rate of early recurrence of hepatocellular carcinoma has been reported within weeks of starting treatment, but the mechanism is not known. METHODS: We monitored the serum level of vascular endothelial growth factor (VEGF) and changes in the pattern of circulating interleukins in 103 chronic hepatitis C patients during antiviral treatment with DAA-regimens...
2016: PloS One
https://www.readbyqxmd.com/read/27956454/hepatitis-c-infection-and-the-risk-of-non-liver-related-morbidity-and-mortality-in-hiv-positive-persons-in-the-swiss-hiv-cohort-study
#8
Helen Kovari, Andri Rauch, Roger Kouyos, Mathieu Rougemont, Matthias Cavassini, Patrick Schmid, Marcel Stöckle, Enos Bernasconi, Rainer Weber, Bruno Ledergerber
BACKGROUND: HCV infection has been associated with increased non-liver-related morbidity and mortality. However, studies have yielded inconsistent results. METHODS: The incidence of clinical events in HIV-infected HCV-seropositive and incidence-density-matched HCV-seronegative participants of the Swiss HIV Cohort Study from 08/1994 to 12/2014 was studied. We compared firstly, HCV-seropositive with HCV-seronegative participants, and secondly, HCV-viremic with successfully treated nonviremic patients...
December 12, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27955711/hcv-co-infection-and-markers-of-liver-injury-and-fibrosis-among-hiv-positive-childbearing-women-in-ukraine-results-from-a-cohort-study
#9
Heather Bailey, Nataliya Nizova, Violeta Martsynovska, Alla Volokha, Ruslan Malyuta, Mario Cortina-Borja, Claire Thorne
BACKGROUND: Ukraine's injecting drug use-driven HIV epidemic is among the most severe in Europe with high burden of HCV co-infection. HIV/HCV co-infected individuals are at elevated risk of HCV-related morbidity, but little is known about burden of liver disease and associated factors in the HIV-positive population in Ukraine, particularly among women. METHODS: Characteristics of 2050 HIV-positive women enrolled into the Ukrainian Study of HIV-infected Childbearing Women were described by HCV serostatus...
December 12, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27943542/hbv-hcv-co-infection-is-associated-with-a-high-level-of-hcv-spontaneous-clearance-among-drug-users-and-blood-donors-in-china
#10
H Xiong, X Rong, M Wang, R Xu, K Huang, Q Liao, J Huang, J Chen, C Li, X Tang, Z Shan, M Zhang, K Nelson, Y Fu
Understanding the biology of spontaneous clearance of hepatitis C virus (HCV) infection could lead to improved strategies to prevent the sequelae associated with chronic HCV infection. Chronic infections with hepatitis virus are very common in China, but the factors associated with spontaneous clearance of HCV have not been adequately studied. We evaluated the spontaneous clearance of HCV among 1918 drug users and 1526 HCV-seropositive blood donors in Guangzhou, China. Among participants who were co-infected with hepatitis B virus (HBV), 41...
December 12, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27941432/immune-reconstitution-following-hcv-clearance-with-direct-antiviral-agents-potential-consequences-for-patients-with-hcc
#11
Jens M Werner, Akinbami Adenugba, Ulrike Protzer
Recent introduction of all-oral direct acting antiviral treatment has revolutionized care of patients with chronic hepatitis C virus infection. Since patients with different liver disease stages have been treated with great success including those awaiting liver transplantation, therapy has been extended to patients with hepatocellular carcinoma as well. From observational studies among compensated cirrhotic hepatitis C patients treated with interferon-containing regimens, it would have been expected that the rate of hepatocellular carcinoma occurrence is markedly decreased after a sustained virological response...
December 8, 2016: Transplantation
https://www.readbyqxmd.com/read/27905669/secondary-prophylaxis-of-hepatocellular-carcinoma-the-comparison-of-direct-acting-antivirals-with-pegylated-interferon-and-untreated-cohort
#12
R Vukotic, R Di Donato, F Conti, A Scuteri, C Serra, P Andreone
During the past two decades, several studies showed reduced rates of hepatocellular carcinoma recurrence in patients with HCV-related cirrhosis after interferon-based antiviral therapies respect to untreated controls, even without reaching viral clearance. The recent development of new all-oral regimens with direct-acting antivirals has radically improved the therapeutic management of hepatitis C. Nevertheless, paradoxical, or at least unexpected, high rates of both occurrence and recurrence of hepatocellular carcinoma after a treatment with direct-acting antivirals, have been reported in the recent literature...
January 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27893666/four-weeks-of-paritaprevir-ritonavir-ombitasvir-plus-dasabuvir-encountering-dengue-fever-resulted-in-sustained-virological-response-in-an-hcv-patient-a-case-report
#13
Chung-Feng Huang, Tyng-Yuan Jang, Po-Liang Lu, Ming-Lung Yu
BACKGROUND: Direct antiviral agent (DAA) has been the standard of care for patients with hepatitis C virus (HCV) infection. Twelve weeks of paritaprevir/ritonavir/ombitasvir plus dasabuvir (PROD) with or without ribavirin has shown to have a sustained virological response at post-treatment 12 weeks (SVR12) rate of >90% in HCV genotype 1 (HCV-1) patients. METHODS: We report a HCV-1b patient who received only 25 days of PROD treatment. RESULTS: The patient early terminated treatment due to dengue fever but eventually achieved SVR12...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27885757/role-of-primary-t-cell-immunodeficiency-and-hepatitis-b-coinfection-on-spontaneous-clearance-of-hepatitis-c-the-bc-hepatitis-testers-cohort
#14
N Islam, M Krajden, M Gilbert, P Gustafson, A Yu, M Kuo, M Chong, M Alvarez, J Wong, M W Tyndall, N Z Janjua
T-cell host immune response against hepatitis C virus (HCV) has been suggested to play an important role in determining HCV infection outcome. However, data from human studies are not available. This study examined the effect of primary T-cell deficiency along with other factors on the spontaneous clearance of HCV in a large population-based cohort in British Columbia, Canada. The BC Hepatitis Testers Cohort includes all individuals tested for HCV in BC in 1990-2013 linked with data on their medical visits, hospitalizations and prescription drugs...
November 25, 2016: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/27875997/identification-of-the-transcripts-associated-with-spontaneous-hcv-clearance-in-individuals-co-infected-with-hiv-and-hcv
#15
Yue Chen, Chengli Shen, Debjani Guha, Ming Ding, Scott Kulich, Aiymkul Ashimkhanova, Charles Rinaldo, Eric Seaberg, Joseph B Margolick, Valentina Stosor, Otoniel Martínez-Maza, Phalguni Gupta
BACKGROUND: Infection with human immunodeficiency virus (HIV) influences the outcome and natural disease progression of hepatitis C virus (HCV) infection. While the majority of HCV mono-infected and HCV/HIV co-infected subjects develop chronic HCV infection, 20-46% of mono- and co-infected subjects spontaneously clear HCV infection. The mechanism underlying viral clearance is not clearly understood. Analysis of differential cellular gene expression (mRNA) between HIV-infected patients with persistent HCV infection or spontaneous clearance could provide a unique opportunity to decipher the mechanism of HCV clearance...
November 22, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27875564/donor-ifnl4-genotype-is-associated-with-early-post-transplant-fibrosis-in-recipients-with-hepatitis-c
#16
Taylor Aiken, Ari Garber, Dawn Thomas, Nicole Hamon, Rocio Lopez, Rajesh Konjeti, Arthur McCullough, Nizar Zein, John Fung, Medhat Askar, Binu V John
BACKGROUND AND AIMS: Early post-transplant hepatic fibrosis is associated with poor outcomes and may be influenced by donor/recipient genetic factors. The rs368234815 IFNL4 polymorphism is related to the previously described IL28B polymorphism, which predicts etiology-independent hepatic fibrosis. The aim of this study was to identify the impact of donor and/or recipient IFNL4 genotype on early fibrosis among patients transplanted for hepatitis C (HCV). METHODS: Clinical data were collected for 302 consecutive patients transplanted for HCV...
2016: PloS One
https://www.readbyqxmd.com/read/27870883/association-between-leptin-and-complement-in-hepatitis-c-patients-with-viral-clearance-homeostasis-of-metabolism-and-immunity
#17
Ming-Ling Chang, Chia-Jung Kuo, Hsin-Chih Huang, Yin-Yi Chu, Cheng-Tang Chiu
BACKGROUND: The association between leptin and complement in hepatitis C virus (HCV) infection remains unknown. METHODS: A prospective study was conducted including 474 (250 genotype 1, 224 genotype 2) consecutive chronic hepatitis C (CHC) patients who had completed an anti-HCV therapy course and undergone pre-therapy and 24-week post-therapy assessments of interferon λ3-rs12979860 and HCV RNA/genotypes, anthropometric measurements, metabolic and liver profiles, and complement component 3 (C3), C4, and leptin levels...
2016: PloS One
https://www.readbyqxmd.com/read/27849172/novel-e2-glycoprotein-tetramer-detects-hepatitis-c-virus-specific-memory-b-cells
#18
Maude Boisvert, Wanrui Zhang, Elizabeth J Elrod, Nicole F Bernard, Jean-Pierre Villeneuve, Julie Bruneau, Joseph Marcotrigiano, Naglaa H Shoukry, Arash Grakoui
Acute hepatitis C virus (HCV) infection culminates in viral persistence in the majority of cases. Abs that recognize the envelope glycoproteins E1 and E2 are generated during the late stages of acute infection, yet their contribution to spontaneous viral clearance remains controversial. Investigation of the humoral responses during acute HCV infection have been limited by the inability to directly identify and characterize HCV-specific B cells. In this study we describe the development of a novel tetramer of the E2 glycoprotein ectodomain (J6, genotype 2a strain), which allowed us to visualize E2-specific B cells longitudinally in the peripheral blood of HCV-infected individuals...
December 15, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27830380/recovery-of-pan-genotypic-and-genotype-specific-amino-acid-alterations-in-chronic-hepatitis-c-after-viral-clearance-transition-at-the-crossroad-of-metabolism-and-immunity
#19
Ming-Ling Chang, Mei-Ling Cheng, Su-Wei Chang, Hsiang-Yu Tang, Cheng-Tang Chiu, Chau-Ting Yeh, Ming-Shi Shiao
Recovery of amino acid (AA) metabolism and the associated clinical implications in chronic hepatitis C (CHC) patients with sustained virological response (SVR) following anti-hepatitis C virus (HCV) therapy remains elusive. A prospective cohort study was conducted on 222 CHC patients with SVR. Eighty-two age-matched male genotype 1 (G1) and G2 patients underwent paired serum metabolomics analyses with liquid chromatography-tandem mass spectrometry to examine AAs before and 24 weeks after anti-HCV therapy. Before anti-HCV therapy, G1 patients had a higher HCV RNA level than G2 patients...
November 10, 2016: Amino Acids
https://www.readbyqxmd.com/read/27816863/the-effects-of-alcohol-on-spontaneous-clearance-of-acute-hepatitis-c-virus-infection-in-females-versus-males
#20
Judith I Tsui, Ali Mirzazadeh, Judith A Hahn, Lisa Maher, Julie Bruneau, Jason Grebely, Margaret Hellard, Arthur Y Kim, Naglaa H Shoukry, Andrea L Cox, Maria Prins, Gregory J Dore, Georg Lauer, Andrew R Lloyd, Kimberly Page
BACKGROUND: Approximately one quarter of persons exposed to hepatitis C virus (HCV) will spontaneously clear infection. We undertook this study to investigate the impact of alcohol on likelihood of HCV spontaneous viral clearance stratified by sex groups. METHODS: Pooled data from an international collaboration of prospective observational studies of incident HIV and HCV infection in high-risk cohorts (the InC3 Study) was restricted to 411 persons (or 560.7 person-years of observation) with documented acute HCV infection and data regarding alcohol use...
December 1, 2016: Drug and Alcohol Dependence
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