Study of the quasispecies dynamics of serum hepatitis B virus in a patient with acute exacerbations of chronic hepatitis B / 中华肝脏病杂志
Chinese Journal of Hepatology
;
(12): 29-32, 2006.
Article
in Chinese
| WPRIM
| ID: wpr-245761
ABSTRACT
<p><b>OBJECTIVES</b>To investigate the quasispecies dynamics of hepatitis B virus (HBV) during the course of exacerbation and resolution of chronic hepatitis B in a patients.</p><p><b>METHODS</b>Five serum samples were collected from a patient with two episodes of exacerbation and resolution of chronic hepatitis B. A method of PCR-TA cloning-conformation sensitive gel electrophoresis (CSGE)-sequencing was performed to study the dynamic changes of HBV quasispecies in basal core promoter (BCP), precore and core regions of HBV genome.</p><p><b>RESULTS</b>Quasispecies complexity was 10 and 12 at the points of exacerbations, and 14 and 17 at the points of resolutions (t = 3.133, P < 0.05). Ratio of dominant quasispecies in HBV population was high (42.4% and 51.5%) during exacerbations and low (30.3% and 21.2%) during resolutions (t = 3.295, P < 0.05). All dominant quasispecies, except the one during the second resolution, carried core P5T, L60V, S155T, and precore G1896A mutations.</p><p><b>CONCLUSION</b>The composition of HBV quasispecies changes due to the change of host immune status, and immune pressure might lead to the selection of immune escape mutants.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Virology
/
Hepatitis B virus
/
Promoter Regions, Genetic
/
Classification
/
Hepatitis B, Chronic
/
Allergy and Immunology
/
Genetics
/
Hepatitis B Core Antigens
/
Mutation
Limits:
Adolescent
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Hepatology
Year:
2006
Type:
Article
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