Cai Q, Wang ZQ, Cai Q, Li C, Chen EZ, Jiang ZY. Relationship between CYP7A1 -204A>C polymorphism with gallbladder stone disease and serum lipid levels: a meta-analysis.
Lipids Health Dis 2014;
13:126. [PMID:
25103562 PMCID:
PMC4267418 DOI:
10.1186/1476-511x-13-126]
[Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 07/29/2014] [Indexed: 12/12/2022] Open
Abstract
Background
The CYP7A1 gene polymorphism has been
reported to be associated with gallbladder stone disease (GSD) and serum lipid
levels, but the results were inconsistent. This meta-analysis aimed to evaluate
the influence of the -204A > C polymorphism in the promoter of CYP7A1 gene on the GSD and serum lipid levels.
Methods
According to inclusion/exclusion criteria, eligible studies on CYP7A1 gene -204A > C polymorphism of serum lipid
levels and the risk of GSD were retrieved. Depending on the between-study
heterogeneity, the fixed- or random-effects model was applied, and the data were
analyzed using the RevMan software (V5.2).
Results
Five studies totaling 830 GSD patients and 882 healthy controls were used to
evaluate the relation of CYP7A1 -204A > C
polymorphism with GSD. Overall comparison of alleles A with C in all study
population yielded 5% but non-significant increased risk of GSD (OR = 1.05, 95%
CI: 0.91 − 1.22, P = 0.48). Subgroup analysis by ethnic differences did not show
any association between CYP7A1 -204A > C
polymorphism and GSD either. Four studies totaling 802 cases and 691 controls were
used to assess the relation of CYP7A1
-204A > C polymorphism with serum lipid levels. All the subjects were from the
Asian population. The pooled effects indicated that AC genotype had higher levels
of TG than AA (MD = -0.42, 95% CI: -0.76 − -0.08, P = 0.01). CC genotype in cases
had higher levels of TC (MD = 0.65, 95% CI: 0.25 − 1.05, P = 0.001) and LDL-C
(MD = 0.40, 95% CI: 0.06 − 0.73, P = 0.02) than AA, AA (MD = -0.35, 95% CI: -0.60
− -0.10, P = 0.007) and AC (MD = −0.35, 95% CI: -0.61 − -0.08, P = 0.01) genotypes
in controls had higher levels of TC than CC, and AA genotype in controls had
higher levels of HDL-C than CC (MD = -0.15, 95% CI: -0.21 − -0.09,
P < 0.00001).
Conclusions
The CYP7A1 -204A > C polymorphism is
significantly associated with serum lipid levels in Asian population, but not
gallbladder stone disease.
Electronic supplementary material
The online version of this article (doi:10.1186/1476-511X-13-126) contains supplementary material, which is available to authorized
users.
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