Abstract:
This study aims to assess the potential association of MBL2 gene single nucleotide polymorphisms (SNPs) to Chlamydia trachomatis infection. We analysed a selected sample of 492 DNA
and serum specimens from Dutch Caucasian women. Women were categorized into four groups of
infection status based on the results of DNA and antibody tests for C. trachomatis: Ct-DNA+/IgG+, CtDNA+/IgG−, Ct-DNA−/IgG+, and Ct-DNA−/IgG−. We compared six MBL2 SNPs (−619G > C (H/L),
−290G > C (Y/X), −66C > T (P/Q), +154C > T (A/D), +161A > G (A/B), and +170A > G (A/C)) and
their respective haplotypes in relation to these different subgroups. The −619C (L) allele was less
present within the Ct-DNA−/IgG+ group compared with the Ct-DNA−/IgG− group (OR = 0.49;
95% CI: 0.28–0.83), while the +170G (C) allele was observed more in the Ct-DNA+/IgG+ group as
compared with the Ct-DNA−/IgG− group (OR = 2.4; 95% CI: 1.1–5.4). The HYA/HYA haplotype
was more often present in the Ct-DNA−/IgG− group compared with the Ct-DNA+/IgG+ group
(OR = 0.37; 95% CI: 0.16–0.87). The +170G (C) allele was associated with increased IgG production
(p = 0.048) in C. trachomatis PCR-positive women. This study shows associations for MBL in immune
reactions to C. trachomatis. We showed clear associations between MBL2 genotypes, haplotypes, and
individuals’ stages of C. trachomatis DNA and IgG positivity.
