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ANTIVIRAL DRUGS

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https://www.readbyqxmd.com/read/28535298/ledipasvir-sofosbuvir-plus-ribavirin-in-treatment-naive-patients-with-hepatitis-c-virus-genotype-3-infection-an-open-label-study
#1
Jordan J Feld, Alnoor Ramji, Stephen D Shafran, Bernard Willems, Paul Marotta, Emmanuelle Huchet, Marie-Louise Vachon, Evguenia S Svarovskaia, K C Huang, Robert H Hyland, Chohee Yun, Benedetta Massetto, Diana M Brainard, John G McHutchison, Edward Tam, Robert Bailey, Curtis Cooper, Eric M Yoshida, Susan Greenbloom, Magdy Elkhashab, Sergio Borgia, Mark G Swain
Background.: Patients chronically infected with genotype 3 hepatitis C virus (HCV) have faster disease progression and are less responsive to current direct-acting antiviral regimens than patients infected with other genotypes. We conducted an open-label trial to evaluate the safety, tolerability, and efficacy of ledipasvir and sofosbuvir plus ribavirin in patients with genotype 3 HCV infection. Methods.: We enrolled treatment-naive patients with and without compensated cirrhosis at 15 sites in Canada...
May 23, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28534856/manipulation-of-viral-micrornas-as-a-potential-antiviral-strategy-for-the-treatment-of-cytomegalovirus-infection
#2
Jiang Deng, Jun Xiao, Ping Ma, Bo Gao, Feng Gong, Liping Lv, Yanyu Zhang, Jinbo Xu
Cytomegalovirus (CMV) infection leads to notable morbidity and mortality in immunosuppressed patients. Current antiviral drugs are effective but seriously limited in their long-term use due to their relatively high toxicity. In the present study, we characterized the expression of murine CMV microRNAs (MCMV miRNAs) both in vitro and in vivo. Although 29 miRNAs were detectable during in vitro infection, only 11 miRNAs (classified as Group 1) were detectable during in vivo infection, and as many as 18 viral miRNAs (classified as Group 2) were less detectable (<50% of animals) in both the liver and lungs...
May 19, 2017: Viruses
https://www.readbyqxmd.com/read/28534812/understanding-the-complex-patterns-observed-during-hepatitis-b-virus-therapy
#3
Andrea Carracedo Rodriguez, Matthias Chung, Stanca M Ciupe
Data from human clinical trials have shown that the hepatitis B virus (HBV) follows complex profiles, such as bi-phasic, tri-phasic, stepwise decay and rebound. We utilized a deterministic model of HBV kinetics following antiviral therapy to uncover the mechanistic interactions behind HBV dynamics. Analytical investigation of the model was used to separate the parameter space describing virus decay and rebound. Monte Carlo sampling of the parameter space was used to determine the virological, pharmacological and immunological factors that separate the bi-phasic and tri-phasic virus profiles...
May 19, 2017: Viruses
https://www.readbyqxmd.com/read/28534036/highly-successful-hepatitis-c-virus-hcv-treatment-outcomes-in-human-immunodeficiency-virus-hcv-coinfected-patients-at-a-large-urban-ryan-white-clinic
#4
Manish Patel, Saira Rab, Aley G Kalapila, Alison Kyle, Ike Solomon Okosun, Lesley Miller
BACKGROUND: The introduction of direct-acting antivirals (DAAs) created a major paradigm shift in the treatment of chronic hepatitis C. Currently, there is little "real-world" data regarding hepatitis C virus (HCV) treatment outcomes in the human immunodeficiency virus (HIV)/HCV-coinfected population. METHODS: This retrospective cohort study examined HCV treatment outcomes of HIV/HCV-coinfected patients at a large, urban, Ryan White-funded clinic caring for an underserved population...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28532402/antiviral-activity-of-phenanthrenes-from-the-medicinal-plant-bletilla-striata-against-influenza-a-virus
#5
Ya Shi, Bing Zhang, Yiyu Lu, Chaodong Qian, Yan Feng, Liwei Fang, Zhishan Ding, Dongqing Cheng
BACKGROUND: Influenza represents a serious public health concern. The emergence of resistance to anti-influenza drugs underlines the need to develop new drugs. This study aimed to evaluate the anti-influenza viral activity and possible mechanisms of 12 phenanthrenes from the medicinal plant Bletilla striata (Orchidaceae family). METHODS: Twelve phenanthrenes were isolated and identified from B. striata. Influenza virus A/Sydney/5/97 (H3N2) propagated in embryonated chicken eggs was used...
May 22, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28531943/recent-trends-in-zikv-research-a-step-away-from-cure
#6
REVIEW
Aftab Alam, Nikhat Imam, Anam Farooqui, Shahnawaz Ali, Md Zubbair Malik, Romana Ishrat
Zika virus (ZikV) is a member of the Flaviviridae virus family, genus Flavivirus has emerged as a potential threat to human health worldwide. Consequences of vertical infections includes microcephaly with brain and eye anomalies, and adult infections includes Guillain-Barrésyndrome (GBS), brain ischemia, myelitis and meningoencephalitis. To develop a better treatment, many efforts are being made, like drug-repurposing concept for FDA-approved drugs for antiviral activity are screened against ZikV infection and emerging as a promising alternative to expedite drug development and various vaccines like DNA, ZPIV, LAIV, mRNA and AGS-v vaccines have been designed and in under clinical trial phases...
May 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531277/genome-wide-discovery-of-viral-micrornas-based-on-phylogenetic-analysis-and-structural-evolution-of-various-human-papillomavirus-subtypes
#7
Shun-Long Weng, Kai-Yao Huang, Julia Tzu-Ya Weng, Fang-Yu Hung, Tzu-Hao Chang, Tzong-Yi Lee
In mammals, microRNAs (miRNAs) play key roles in controlling posttranscriptional regulation through binding to the mRNAs of target genes. Recently, it was discovered that viral miRNAs may be involved in human cancers and diseases. It is likely that viral miRNAs help viruses enter the latent phase of their life cycle and become undetected by the host's immune system, while increasing the host's risk for cancer development. Cervical cancer is typically related to the infection of human papillomavirus (HPV) through sexual transmission...
May 20, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28529212/exploring-the-case-for-eminent-domain-of-hepatitis-c-virus-treatment-patents
#8
T Joseph Mattingly Ii, Emily L Heil, Kathleen S Hoke
Hepatitis C virus (HCV) is a silent epidemic affecting millions of patients and represents the leading indication for liver transplantation in the United States and worldwide. New direct-acting antiviral agents offer the potential to cure patients infected with HCV but it comes at a staggering cost. Given the recent attention to these high-priced HCV therapies and the impact treating individuals with HCV is having on drug expenditures in the United States, there may be a need to revisit drug patent laws and the options the federal government has to ensure patient access to care...
2017: Journal of Health Care for the Poor and Underserved
https://www.readbyqxmd.com/read/28529116/italian-consensus-guidelines-for-the-management-of-hepatitis-b-virus-infections-in-patients-with-rheumatoid-arthritis
#9
Marco Sebastiani, Fabiola Atzeni, Laura Milazzo, Luca Quartuccio, Carlo Scirè, Giovanni Battista Gaeta, Giovanni Lapadula, Orlando Armignacco, Marcello Tavio, Ignazio Olivieri, Pierluigi Meroni, Laura Bazzichi, Walter Grassi, Alessandro Mathieu, Claudio Mastroianni, Evangelista Sagnelli, Teresa Santantonio, Caterina Uberti Foppa, Massimo Puoti, Loredana Sarmati, Paolo Airò, Oscar Massimiliano Epis, Rossana Scrivo, Miriam Gargiulo, Agostino Riva, Andreina Manfredi, Giovanni Ciancio, Gianguglielmo Zehender, Gloria Taliani, Luca Meroni, Salvatore Sollima, Piercarlo Sarzi-Puttini, Massimo Galli
OBJECTIVES: Hepatitis B (HBV) infection, which is prevalent worldwide, is also frequently seen in patients with rheumatoid arthritis (RA). The Italian Society of Rheumatology (SIR) and the Italian Society of Infectious and Tropical Diseases (SIMIT) endorsed a national consensus process to review the available evidence on HBV management in RA patients and to produce practical, hospital-wide recommendations. METHODS: The consensus panel consisted of infectious disease consultants, rheumatologists and epidemiologists and used the criteria of the Oxford Centre for Evidence-based Medicine to assess the quality of the evidence and the strength of their recommendations...
May 18, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28528783/revelation-and-cloning-of-valinomycin-synthetase-genes-in-streptomyces-lavendulae-acr-da1-and-their-expression-analysis-under-different-fermentation-and-elicitation-conditions
#10
Richa Sharma, Vijaylakshmi Jamwal, Varun P Singh, Priya Wazir, Praveen Awasthi, Deepika Singh, Sumit G Gandhi, Ram A Vishwakarma, Asha Chaubey
Streptomyces species are amongst the most exploited microorganisms due to their ability to produce a plethora of secondary metabolites with bioactive potential, including several well known drugs. They are endowed with immense unexplored potential and substantial efforts are required for their isolation as well as characterization for their bioactive potential. Unexplored niches and extreme environments are host to diverse microbial species. In this study, we report Streptomyces lavendulae ACR-DA1, isolated from extreme cold deserts of the North Western Himalayas, which produces a macrolactone antibiotic, valinomycin...
May 18, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28527884/adjuvant-medications-that-improve-survival-after-locoregional-therapy
#11
F Edward Boas, Etay Ziv, Hooman Yarmohammadi, Karen T Brown, Joseph P Erinjeri, Constantinos T Sofocleous, James J Harding, Stephen B Solomon
PURPOSE: To determine if outpatient medications taken at the time of liver tumor embolization or ablation affect survival. MATERIALS AND METHODS: A retrospective review was done of 2,032 liver tumor embolization, radioembolization, and ablation procedures performed in 1,092 patients from June 2009 to April 2016. Pathology, hepatocellular carcinoma (HCC) stage (American Joint Committee on Cancer), neuroendocrine tumor (NET) grade, initial locoregional therapy, overall survival after initial locoregional therapy, Child-Pugh score, Eastern Cooperative Oncology Group performance status, Charlson Comorbidity Index, and outpatient medications taken at the time of locoregional therapy were analyzed for each patient...
May 17, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28523927/retinoid-bms411-4-5-5-dimethyl-8-phenyl-5-6-dihydronaphthalen-2-yl-carbonyl-amino-benzoic-acid-a-potential-inhibitor-of-ns5a-protein-of-hepatitis-c-virus-a-candidate-for-combined-therapy-of-hepatitis-c-infection
#12
S Ibrahim, M J Asad, R T Mahmood, F H Wattoo, S Akhter, D Shahwar
Hepatitis C infection is a serious health issue worldwide caused by hepatitis C virus (HCV). There is an urgent need of search for new direct acting antiviral drugs due to the rapid development of drug resistance. The HCV NS5A protein is involved in creating resistance against antiviral therapy and there are also many reports that vitamin A deficiency is associated with non-responsiveness to antiviral treatment in HCV infected patients. So the present in silico study was aimed to find the relation between vitamin A deficiency and the NS5A protein's function in antiviral resistance...
2017: Acta Virologica
https://www.readbyqxmd.com/read/28522916/early-hepatitis-b-viral-dna-clearance-predicts-treatment-response-at-week-96
#13
Xiao-Yu Fu, De-Ming Tan, Cui-Mei Liu, Bin Gu, Li-Hua Hu, Zhong-Tian Peng, Bin Chen, Yuan-Lin Xie, Huan-Yu Gong, Xiao-Xuan Hu, Lian-Hui Yao, Xiao-Ping Xu, Zheng-Yuan Fu, Lang-Qiu He, Si-Hai Li, Yun-Zhu Long, De-Hui Li, Ji-Long Gu, Shi-Fang Peng
AIM: To investigate whether hepatitis viral DNA load at 24 wk of treatment predicts response at 96 wk in patients with chronic hepatitis B. METHODS: A total of 172 hepatitis B envelope antigen (HBeAg)-positive chronic hepatitis B patients who received initial treatment at 16 tertiary hospitals in Hunan Province, China were enrolled in this study. All patients received conventional doses of lamivudine and adefovir dipivoxil, telbivudine, entecavir dispersible tablets, or entecavir tablets for 96 wk...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28522204/peg-interferon-plus-nucleotide-analogue-treatment-versus-no-treatment-in-patients-with-chronic-hepatitis-b-with-a-low-viral-load-a-randomised-controlled-open-label-trial
#14
Annikki de Niet, Louis Jansen, Femke Stelma, Sophie B Willemse, Sjoerd D Kuiken, Sebastiaan Weijer, Carin M J van Nieuwkerk, Hans L Zaaijer, Richard Molenkamp, R Bart Takkenberg, Maarten Koot, Joanne Verheij, Ulrich Beuers, Hendrik W Reesink
BACKGROUND: Antiviral treatment is currently not recommended for patients with chronic hepatitis B with a low viral load. However, they might benefit from acquiring a functional cure (hepatitis B surface antigen [HBsAg] loss with or without formation of antibodies against hepatitis B surface antigen [anti-HBs]). We assessed HBsAg loss during peg-interferon-alfa-2a (peg-IFN) and nucleotide analogue combination therapy in patients with chronic hepatitis B with a low viral load. METHODS: In this randomised controlled, open-label trial, patients were enrolled from the Academic Medical Center (AMC), Amsterdam, Netherlands...
May 15, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28521640/antibody-mediated-immunotherapy-against-chronic-hepatitis-b-virus-infection
#15
Ying Gao, Tian-Ying Zhang, Quan Yuan, Ning-Shao Xia
The currently available drugs to treat hepatitis B virus (HBV) infection include interferons and nucleos(t)ide analogues, which can only induce disease remission and are inefficient for the functional cure of patients with chronic HBV infection (CHB). Since high titers of circulating hepatitis B surface antigen (HBsAg) may be essential to exhaust the host anti-HBV immune response and they cannot be significantly reduced by current drugs, new antiviral strategies aiming to suppress serum hepatitis B surface antigen (HBsAg) could help restore virus-specific immune responses and promote the eradication of the virus...
May 19, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28521532/new-antivirals-for-the-treatment-of-chronic-hepatitis-b
#16
Vincent Soriano, Pablo Barreiro, Laura Benitez, Jose M Peña, Carmen de Mendoza
Current treatment with oral nucleos(t)ides entecavir or tenofovir provide sustained suppression of HBV replication and clinical benefit in most chronic hepatitis B virus (HBV) infected persons. However, HBV rebound generally occurs upon drug discontinuation due to persistence of genomic HBV reservoirs as episomic cccDNA and chromosomic integrated HBV-DNA. There is renewed enthusiasm on HBV drug discovery following recent successes with antivirals for hepatitis C and immunotherapies for some cancers. Areas covered: New drugs that target distinct steps of the HBV life cycle are been developed, including inhibitors of viral entry, new polymerase inhibitors, capsid and assembly inhibitors, virus release blockers, and disruptors of cccDNA formation and transcription...
May 18, 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28521054/in-silico-prediction-of-drug-induced-liver-injury-based-on-adverse-drug-reaction-reports
#17
Xiang-Wei Zhu, Shao-Jing Li
Drug-induced liver injury (DILI) is a major cause of drug attrition. Currently existing Quantitative Structure-Activity Relationship (QSAR) models have limited predictive capabilities for DILI. Furthermore, their practical applications were limited by lack of new hepatotoxicity data. In this study, we first collected and curated a novel set of 122 DILI-positive and 932 DILI-negative drugs from online adverse drug reports using proportional reporting ratios as the signal detection method. Second, three strategies (under-sampling the majority class, synthetic minority over-sampling technique, and adjusting decision threshold approach) were employed to develop predictive classification models to cope with the unbalanced dataset...
May 17, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28520749/access-and-response-to-direct-antiviral-agents-daa-in-hiv-hcv-co-infected-patients-in-italy-data-from-the-icona-cohort
#18
Antonella d'Arminio Monforte, Alessandro Cozzi-Lepri, Francesca Ceccherini-Silberstein, Andrea De Luca, Sergio Lo Caputo, Antonella Castagna, Cristina Mussini, Antonella Cingolani, Alessandro Tavelli, Milensu Shanyinde, Andrea Gori, Enrico Girardi, Massimo Andreoni, Andrea Antinori, Massimo Puoti
BACKGROUND: Real-life data on access and response to direct antiviral agents (DAA) in HIV-HCV coinfected individuals are lacking. METHODS: HCV viremic, HIV-positive patients from Icona and Hepaicona cohorts naïve to DAA by January 2013 were included. Access and predictors of starting DAA were evaluated. Switches of antiretroviral drugs at starting DAA were described. We calculated sustained virological response (SVR12) in those reaching 12 weeks after end-of-treatment (EOT), and defined treatment failure (TF) as discontinuation of DAA before EOT or non-SVR12...
2017: PloS One
https://www.readbyqxmd.com/read/28515509/anti-nuclear-cytoplasmic-antibody-associated-vasculitis-a-probable-adverse-effect-of-sofosbuvir-treatment-in-chronic-hepatitis-c-patients
#19
Youssef K Ahmad, Salwa Tawfeek, Mohamed Sharaf-Eldin, Hassan E Elbatea, Abdelrahman Kobtan, Ferial El-Kalla, Rehab Badawi, Sherief Abd-Elsalam
Background: Egypt has the largest hepatitis C virus (HCV) epidemic worldwide. Sofosbuvir is an antiviral drug acting by inhibition of the HCV NS5B polymerase. It has shown high efficacy in combination with several other drugs and has a low reported rate of side effects. Objective: The aim of this prospective cohort study was to assess the safety of sofosbuvir-based treatment regimens used to treat chronic hepatitis C infections and to detect any side effects of sofosbuvir not previously reported. Methods: We studied treatment side effects in 3,000 patients with chronic HCV infection treated with sofosbuvir and ribavirin for 24 weeks or treated by pegylated interferon, sofosbuvir, and ribavirin triple therapy for 12 weeks...
April 2017: Hospital Pharmacy
https://www.readbyqxmd.com/read/28512353/favorable-response-to-long-term-nucleos-t-ide-analogue-therapy-in-hbeag-positive-patients-with-high-serum-fucosyl-agalactosyl-igg
#20
Cheng-Hsun Ho, Hung-Wen Tsai, Chen-Yeh Lee, Li-Juan Huang, Rong-Nan Chien, I-Chin Wu, Yen-Cheng Chiu, Wen-Chun Liu, Pin-Nan Cheng, Ting-Tsung Chang, Shu-Hui Chen
Aberrant IgG glycosylation is a feature of hepatitis B virus (HBV) infection but its effect on a long-term efficacy of antiviral therapy has never been addressed. After a screening of 1,085 patients, 132 eligible HBV e antigen (HBeAg)-positive and 101 HBeAg-negative patients with anti-HBV nucleos(t)ide analogue monotherapy were enrolled with on-treatment follow-ups for at least one year. IgG1 N-glycome was profiled using mass spectrometry and evaluated for its relevance in treatment responses. The results indicated that a high level of serum fucosyl-agalactosyl IgG1 (IgG1-G0F) at baseline was associated with the severity of liver inflammation and damage but advanced treatment responses, including HBV DNA loss, HBeAg seroconversion, a reduced drug resistance rate, and a liver histological improvement at year 1, thereby improving the long-term treatment efficacy and the probability of treatment discontinuation in HBeAg-positive patients...
May 16, 2017: Scientific Reports
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