Evaluation of antiviral effect of type I, II, and III interferons on direct-acting antiviral-resistant hepatitis C virus

2017 ◽  
Vol 146 ◽  
pp. 130-138 ◽  
Author(s):  
Atsushi Hamana ◽  
Yuki Takahashi ◽  
Takuro Uchida ◽  
Makiya Nishikawa ◽  
Michio Imamura ◽  
...  
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Antiviral Effect ◽  
Type I ◽  
Direct Acting Antiviral ◽  
Direct Acting

New Epidemiologic Data Regarding Hepatitis C Virus Infection in Romania

2017 ◽  
Vol 26 (4) ◽  
pp. 381-386
Author(s):  
Mircea Manuc ◽  
Carmen M. Preda ◽  
Corneliu P. Popescu ◽  
Cristian Baicuș ◽  
Theodor Voiosu ◽  
...  
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Drug Users ◽  
Antiviral Agent ◽  
Virologic Response ◽  
Advanced Fibrosis ◽  
Direct Acting Antiviral ◽  
Genotype 1B ◽  
Direct Acting ◽  
End Stage

Background & Aims: Literature data suggest that HCV genotype-1b is present in 93-99% of the Romanian patients infected with hepatitis C virus (HCV). We present the genotyping tests recently performed on patients with HCV and advanced fibrosis eligible for the Direct-Acting Antiviral (DAA) therapy, as well as the prevalence of these cases across Romania.Methods: The genotyping method was performed on 7,421 HCV patients with advanced fibrosis. The detection method was automatic real time PCR platform M2000 (Abbott). Every subject was introduced into a database including age, sex, county and address.Results: Genotype 1b was almost exclusively present: 7,392/7,421 (99.6%). Genotype 1b patients were 19.6% from Bucharest, 49% were males, with a median age of 60 years. Genotype non-1b was encountered in 29/7,421 subjects (0.4%), 62% were males, 69% from Bucharest and the median age was 52 years. Most of the subjects (75%) were in the 6th and 7th age decade. The prevalence of these cases varied significantly across Romanian counties: the highest was in Bucharest (61.3/105), Bihor (47/105), Iasi (46/105) and Constanța (43/105), and the lowest in Ilfov (2.8/105), Harghita (3.7/105), Covasna (5.4/105) and Maramureș (8.8/105) (p<0.001).Conclusions: Genotype 1b is encountered in 99.6% of patients with chronic hepatitis C and advanced fibrosis from Romania. The presence of genotypes non-1b is more common in Bucharest, in males and at a younger age. There are significant differences regarding the distribution of these cases across Romania: the highest rates are in Bucharest, Bihor, Iasi and Constanta.Abbreviations: BMI: body mass index; DAA: direct-acting antiviral agent; GT: genotype; HBV: hepatitis B virus; HCC: hepatocellular carcinoma; HCV: hepatitis C virus; IDU: intravenous drug users; MELD: model for end stage liver disease; NASH: non-alcoholic steatohepatitis; SVR; sustained virologic response.

Efficacy of Direct-Acting Antiviral Combination Therapy in the Treat-ment of Hepatitis C Virus Among Kidney Transplant Patients

2020 ◽  
Vol 18 ◽  
Author(s):  
Mohammed Al Atbee ◽  
Saad Shaheen Al-Taher ◽  
Majid Alabbood
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Virus Infection ◽  
Kidney Transplant ◽  
Virological Response ◽  
Hepatitis C Virus Infection ◽  
Direct Acting Antiviral ◽  
Transplant Patients ◽  
Kidney Transplant Patients ◽  
Direct Acting

Background: Up to date, there is no consensus on the best combination of direct-acting antiviral to treat hepatitis C virus in kidney transplant recipients. Objective: This study aims to analyze the efficacy of combination of sofosbuvir and ledipasvir regimen for treatment of hepatitis C virus infected kidney transplant patients. Method: A cross-sectional study conducted in a nephrology clinic and the Nephrology Center in Basrah Teaching Hospital from June 2015 to June 2018. Ledifos (90 mg Ledipasvir and 400 mg Sofosbuvir fixed-dose) was given as a single daily dose for all the participants for 12 weeks. Response for therapy was tested by follow up hepatitis C virus load at the end of 12 weeks and 24 weeks. The sustained virological response was defined as negative viral load of hepatitis C virus (aviremia) at the end of therapy. This study was done according to the Helsinki Congress. Results: A total of 60 (16 females) patients with renal transplantation and hepatitis C virus infection were included. Mean age was 40±6.2 years. A sustained virological response observed in all of the patients who received Ledifos after 12 and 24 weeks of therapy for all genotypes (1a, 1b and 4); p= 0.0001. Genotype 1a was more prevalent among males, 34 (56.6%); p= 0.0001, and it was the most common genotype tested negative serologically, 11 (18.3%). Conclusion: Ledifos therapy is effective and safe option for the treatment of hepatitis C virus infection in the post–renal transplant setting.

Effect on the adherence to concomitant medications after initiation of treatment with direct-acting antiviral agents against hepatitis C virus

2020 ◽  
Vol 43 (8) ◽  
pp. 418-425
Author(s):  
Maria Isabel Guzman Ramos ◽  
Mercedes Manzano-García ◽  
M. de las Aguas Robustillo-Cortés ◽  
Juan Antonio Pineda ◽  
Ramón Morillo-Verdugo
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Antiviral Agents ◽  
Direct Acting Antiviral ◽  
Concomitant Medications ◽  
Direct Acting ◽  
Direct Acting Antiviral Agents

scholarly journals Computer-aided identification of a series of novel ligands showing high potency as hepatitis C virus NS3/4A protease inhibitors

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Stephen Ejeh ◽  
Adamu Uzairu ◽  
Gideon Adamu Shallangwa ◽  
Stephen E. Abechi
Keyword(s):  
Hepatitis C Virus ◽  
Hepatitis C ◽  
Binding Energy ◽  
Protease Inhibitor ◽  
Protease Inhibitors ◽  
Antiviral Agents ◽  
High Potency ◽  
Direct Acting Antiviral ◽  
Direct Acting ◽  
Direct Acting Antiviral Agents

Abstract Background Hepatitis C virus (HCV) is a global medical condition that causes several life-threatening chronic diseases in the liver. The conventional interferon-free treatment regimens are currently in use by a blend of direct-acting antiviral agents (DAAs) aiming at the viral NS3 protease. However, major concerns may be the issue of DAA-resistant HCV strains and the limited availability to the DAAs due to their high price. Due to this crisis, the developments of a new molecule with high potency as an NS3/4A protease inhibitor of the hepatitis-C virus remain a high priority for medical research. This study aimed to use in-silico methods to identify high potent molecule as an NS3/4A protease inhibitor and investigating the binding energy of the identified molecule in comparison with approved direct-acting antiviral agents (Telaprevir, Simeprevir, and Voxilaprevir) through molecular docking. Results The model obtained by in-silico method have the following statistical records, coefficient of determination (r2) of 0.7704, cross-validation (q2LOO = 0.6914); external test set (r2(pred) = 0.7049) and Y-randomization assessment (cR2p = 0.7025). The results from the model were used to identify 12 new potential human HCV NS3/4A protease inhibitors, and it was observed that the identified molecule is well-fixed when docked with the receptor and was found to have the lowest binding energy of − 10.7, compared to approved direct-acting antiviral agents (Telaprevir, Simeprevir, and Voxilaprevir) with − 9.5, − 10.0, − 10.5 binding energy, respectively. Conclusion The binding affinity (− 10.7) of the newly identified molecule docked with 3D structures of HCV NS3/4a protease/helicase (PDB ID: 4A92) was found to be better than that of Telaprevir, Simeprevir, and Voxilaprevir (approved direct-acting antiviral agents) which are − 9.5, − 10.0, and − 10.5, respectively. Hence, a novel molecule was identified showing high potency as HCV NS3/4a protease inhibitors.

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