Relationship of interleukin-18 gene promoter polymorphisms with chronic hepatitis B in Chinese Han population / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 528-532, 2005.
Article
in Chinese
| WPRIM
| ID: wpr-280009
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the polymorphisms of interleukin-18(IL-18) gene promoters, and to disclose whether such polymorphisms are associated with susceptibility to chronic hepatitis B in Chinese Han population.</p><p><b>METHODS</b>Using polymerase chain reaction with sequence specific primers method, the authors detected the single nucleotide polymorphisms of the promoter region of IL-18 gene at position -607C/A and -137G/C in 231 patients with chronic hepatitis B and 300 normal controls.</p><p><b>RESULTS</b>The frequency of CC genotype in IL-18 gene promoter region at position -607 was 0.22(66/300) in normal controls and 0.27(62/231) in patients. The frequency of CA genotype was 0.53(160/300) in normal controls and 0.50(116/231) in patients. The frequency of AA genotype was 0.25(74/300) in normal controls and 0.23(53/231) in patients. The frequencies of -137GG, GC and CC genotype were 0.67, 0.30 and 0.03 in normal controls respectively; whereas in chronic hepatitis B patients the frequencies were 0.79, 0.19 and 0.02. The genotype frequency of -137GG in chronic hepatitis B groups was significantly higher than that in normal controls(chi2 8.55, P=0.003), but the frequencies of -607C/-137C and -607A/-137C haplotypes in chronic hepatitis B groups were significantly lower than those in normal controls. The association between genotype of IL-18 promoter region polymorphisms and hepatitis B virus(HBV) copies showed that the frequency of -607AA genotype in high HBV-DNA copies groups was lower than that in low HBV-DNA copies groups(chi2 6.03, P=0.014).</p><p><b>CONCLUSION</b>The polymorphisms of the promoter region of IL-18 gene at position -607C/A and -137G/C are correlated with chronic hepatitis B in Chinese Han population. The people with -137C allele in the promoter region of IL-18 gene may be protected against HBV infection, and the IL-18 -607AA genotype may be linked to HBV-DNA copy.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Polymorphism, Genetic
/
DNA Mutational Analysis
/
Base Sequence
/
China
/
Polymerase Chain Reaction
/
Promoter Regions, Genetic
/
Hepatitis B, Chronic
/
Genetic Predisposition to Disease
/
Interleukin-18
/
Gene Frequency
Limits:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Child
/
Female
/
Humans
/
Male
Country/Region as subject:
Asia
Language:
Chinese
Journal:
Chinese Journal of Medical Genetics
Year:
2005
Type:
Article
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