scholarly journals Nested Restriction Site-Specific PCR To Detect and Type Hepatitis C Virus (HCV): a Rapid Method To Distinguish HCV Subtype 1b from Other Genotypes

2001 ◽  
Vol 39 (5) ◽  
pp. 1774-1780 ◽  
Author(s):  
L. Krekulova ◽  
V. Rehak ◽  
A. E. Wakil ◽  
E. Harris ◽  
L. W. Riley
1997 ◽  
Vol 66 (2) ◽  
pp. 187-194 ◽  
Author(s):  
Marialinda Vatteroni ◽  
Fabrizio Maggi ◽  
Antonietta Morrica ◽  
Claudia Fornai ◽  
Massimo Giorgi ◽  
...  

2019 ◽  
Vol 49 ◽  
Author(s):  
Irma Salimović- Bešić ◽  
Adna Kahriman ◽  
Suzana Arapčić ◽  
Amela Dedeić- Ljubović

Background: Hepatitis C virus (HCV) genotypes and subtypes exhibit significant geographic variations.Aim: To analyse the distribution of genotypes/subtypes of HCV in a group of patients with chronic hepatitis C from Canton Sarajevo during 2012-2018.Material and methods:The study enrolled 247 human plasma samples of HCV-RNA positive patients with available results of HCV genotyping test.Results: During 2012-2018, the domination of subtypes 1a (34.01%), 1b (28.34%) and genotype 3 (23.89%) was registered. In 2012 and 2013, HCV subtype 1a was the most common (27/63; 42.86% and 17/40; 42.50%, respectively). In 2014, the leading HCV genotype/subtype were 3 and 1b (17/57; 29.82%). In 2015, the dominance of HCV genotype 3 (14/39; 35.90%) continued, while in 2016, the same number of HCV subtypes 1a and 1b (11/30; 36.67%) was recorded. Although in a small number of tested, during 2017, HCV subtype 1b was the most prevalent (7/14; 50.00%), and in 2018, it was replaced by a HCV subtype 1a (3/4; 75.00%). Distribution of HCV genotypes/subtypes by age group of patients varied significantly (p=0.000). The largest number of patients (71/247; 28.74%) belonged to the age category 30-39 years and HCV genotypes/subtypes 1, 3, 4, 1a and 1b were identified. Except in 2017, male gender significantly dominated (p=0.000). In males, HCV subtype 1a (68/170; 40.00%) was the most common, while in women it was HCV subtype 1b (44/77; 57.14%).Conclusion: This six-year retrospective study showed the time variations of the circulating HCV genotypes/subtypes among patients with chronic hepatitis C in Canton Sarajevo. Genotyping of the HCV has an important implications for diagnosis and treatment of the patients.


1996 ◽  
Vol 141 (3-4) ◽  
pp. 701-704 ◽  
Author(s):  
H. Nakao ◽  
H. Okamoto ◽  
H. Tokita ◽  
T. Inoue ◽  
H. Iizuka ◽  
...  

2021 ◽  
Vol 47 (3) ◽  
pp. 713-718
Author(s):  
A. N. Belyavtsev ◽  
M. V. Melnikova ◽  
N. G. Shevchenko ◽  
G. V. Sapronov ◽  
R. G. Vahrenev ◽  
...  

Abstract— The work is aimed at the synthesis and analysis from NS4A of hepatitis C virus (HCV) antigen peptide fragment that contains a conserved B-cell and T-helper epitopes. The 24-mer peptide VIVGRIILSGRPAVIPDREVLYRK-NH2, which contains the main immunogenic site 24–46 of HCV NS4A antigen (corresponding to the 1681–1703 amino acid residues of the HCV polypeptide), subtype 1b, has been prepared via solid-phase synthesis according to the Fmoc-protocol. Particles with diameters of 73 ± 10 nm (30%) and 236 ± 5 nm (70%) have been detected in the water solution of the highly purified peptide (0.5 mg/mL) by dynamic light scattering. The polydispersity index of 0.377 ± 0.012 implies the existence of heterogeneity because of the aggregation of the peptide molecules. The ζ-potential of the peptide aggregates has been determined as 7.0 ± 0.5 mV by means of electrophoretic light scattering. These data confirm the possibility for the development of a nanoscale liposome form of the peptide preparation. Immunoreactivity of the synthesized highly purified peptide has been studied with the use of blood sera of patients with chronic hepatitis C. Antipeptide immunoglobulins G have been detected in 41.7% of serum samples. Thus, this peptide has been shown to reproduce at least one B-epitope, to which antibodies are raised during natural HCV infection. The synthesized 24-mer peptide is a promising candidate for further research and for use as a potential immunogen for the design of a nanoscale therapeutic immunogenic liposomal peptide composition with synthetic lipids as an adjuvant.


2012 ◽  
Vol 70 (6) ◽  
pp. 707-716
Author(s):  
Selma Mejri ◽  
Salma Mhalla ◽  
Ahlem Ben Yahia ◽  
Henda Triki

2000 ◽  
Vol 38 (3) ◽  
pp. 1286-1289 ◽  
Author(s):  
Marize P. Miagostovich ◽  
Flavia B. dos Santos ◽  
C. Milena Gutiérrez ◽  
Lee W. Riley ◽  
Eva Harris

We previously reported a simple subtyping method, restriction site-specific PCR (RSS-PCR), for dengue virus serotypes 2 and 3; here we describe its application for subtyping dengue virus serotypes 1 and 4. Three major RSS-PCR types were observed for dengue virus serotype 1 and two types were observed for dengue virus serotype 4, in agreement with previous strain classifications based on sequence analysis. Because of its simplicity, this method is amenable to rapid subtyping and application to epidemiological studies of dengue in countries where dengue is endemic.


Sign in / Sign up

Export Citation Format

Share Document