Frequency of Chlamydia trachomatis in Ureaplasma-positive healthy women attending their first prenatal visit in a community hospital in Sapporo, Japan

BMC Infectious Diseases

Hiroyuki Yamaguchi¹  Kunihiro Minami²  Kiyotaka Abe²  Junji Matsuo¹  Megumi Matsumoto¹  Tomohiro Yamazaki¹ 

[1] Department of Medical Laboratory Science, Faculty of Health Sciences, Hokkaido University, Nishi-5 Kita-12 Jo, Kita-ku, Sapporo, Hokkaido 060-0812, Japan;Toho Obstetrics and Gynecology Hospital, Higashi-15, Kita-17 Jo, Higashi-ku, Sapporo 065-0017, Japan

关键词: PCR;    Mixed infection;    Ureaplasma parvum;    Ureaplasma urealyticum;    Chlamydia trachomatis;   

Others  :  1175408
DOI  :  10.1186/1471-2334-12-82

 received in 2012-01-31, accepted in 2012-04-02,  发布年份 2012

【 摘 要 】

Background

Although Chlamydia trachomatis is the most commonly reported pathogen that causes urogenital infection such as urethritis or cervicitis, Ureaplasma parvum and Ureaplasma urealyticum, which are commensals in the genital tract, have also now been recognized as contributors to urogenital infection. However, whether the presence of either U. parvum or U. urealyticum is related to that of C. trachomatis in the urogenital tract remains unknown. We therefore attempted to estimate by PCR the prevalence of C. trachomatis, U. parvum and U. urealyticum in endocervical samples obtained from healthy women attending their first prenatal visit in Sapporo, Japan.

Methods

The samples were taken from 303 apparently healthy women, and the extracted DNAs (n = 280) were used for PCR detection targeting C. trachomatis, U. parvum and U. urealyticum. Statistical analysis of the data was performed by Fisher's exact test.

Results

PCR detection revealed that the prevalence of C. trachomatis, U. parvum and U. urealyticum was 14.3% (40/280), 41.7% (117/280) and 8.9% (25/280), respectively. C. trachomatis ompA genotype D was most frequently identified. Surprisingly, either C. trachomatis or Ureaplasma spp. was detected in almost half of the healthy women. Mixed infection of C. trachomatis with either U. parvum or U. urealyticum was also observed in 9.2% (26/280) of the women. There was a significant association between C. trachomatis and either U. parvum (p = 0.023) or Ureaplasma total (p = 0.013), but not U. urealyticum (p = 0.275).

Conclusion

This study demonstrated that the presence of Ureaplasma had a significant effect on the presence of C. trachomatis in the genital tract of healthy women, suggesting that mixed infection is an important factor in bacterial pathogenesis in the genital tract.

【 授权许可】

   
2012 Yamazaki et al; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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Figure 3.

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