S gene mutations in HBsAg/HBsAb double positive chronic hepatitis B patients / 中华肝脏病杂志
Chinese Journal of Hepatology
;
(12): 266-270, 2009.
Artigo
em Chinês
| WPRIM
| ID: wpr-310113
ABSTRACT
<p><b>OBJECTIVES</b>To investigate S gene mutations in HBsAg/HBsAb double positive chronic hepatitis B patients.</p><p><b>METHODS</b>HBV S gene from 8 patients (Group A) with HBsAg (+)/HBsAb (+) and 9 patients (Group B) with HBsAg (+)/HBsAb (-)was amplified by polymerase chain reaction (PCR) and sequencing. Both the distribution of genotype and serotype and the rate of MHR region were compared by Fisher's exact test. The mutation rate of both the DNA level and amino acid level was compared by t test.</p><p><b>RESULTS</b>No significant difference in distribution of genotypes was found between the two groups (P=0.153). In group A, 2 were genotype B, 6 were genotype C; In group B, 6 were genotype B, 3 were genotype C. No significant difference in distribution of serotypes was found between the two groups, either (P=0.218). In group A, 2 were adw, 5 were adr, 1 was ayr; In group B, 6 were adw, 3 were adr. The mutation rate of Pre-S1 region at both the DNA level (2.29% vs 1.80%, t=2.66, P more than 0.05) and the amino acid level (2.66% vs 1.59%, t=1.39, P>0.05) was not significantly different between these two groups; the mutation rate of Pre-S2 region in group A patients was significantly higher than that in group B at the DNA level (1.74% vs 0.91%, t=4.68, P<0.01), but not higher at the amino acid level (3.18% vs 2.05%, t=1.85, P>0.05), the mutation rate of S region in group A patients was significantly higher than that in group B at both the DNA level (2.13% vs 0.81%, t=6.00, P<0.01) and the amino acid level (4.37% vs 1.52%, t=5.32, P<0.01). Amino acid substitutions were found both within and beyond the MHR region. The rate of "a" determinant mutations in these two groups was also found to be significantly different (P<0.05).</p><p><b>CONCLUSION</b>Higher HBV S gene mutation rate exists in HBsAg/HBsAb double positive patients than that in HBsAg (+)/HBsAb (-) patients.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Variação Genética
/
Virologia
/
Sangue
/
DNA Viral
/
Sequência de Bases
/
Vírus da Hepatite B
/
Reação em Cadeia da Polimerase
/
Análise de Sequência de DNA
/
Hepatite B Crônica
/
Alergia e Imunologia
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Chinês
Revista:
Chinese Journal of Hepatology
Ano de publicação:
2009
Tipo de documento:
Artigo
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