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The role of mycoplasmas in reproduction
Abstract:
A study of the incidence of genital tract mycoplasmas in couples attending an infertility clinic and in a group of pregnant women showed that the frequency of isolation was significantly higher in the infertile group (P less than 0.001). In pregnancy, if mycoplasmas were isolated at the first prenatal visit, these organisms were harbored throughout pregnancy. Five percent of the women, however, developed the infection during pregnancy. No relationship was observed of female genital mycoplasmas with prematurity or babies small for gestational age. Treatment with doxycycline (Vibramycin, Pfizer Ltd., Sandwich, Kent, UK) was effective in eradicating mycoplasmas in 91% of couples, but the subsequent pregnancy rates in treated and untreated groups were similar. It appears that mycoplasmas are implicated neither in the etiology of reproductive failure nor in a poor pregnancy outcome.
Insights
Genital tract mycoplasmas are more common in infertile couples. However, these infections do not appear to cause infertility or affect pregnancy outcomes, and treatment offers no significant benefit.
Area of Science:
- Microbiology
- Reproductive Medicine
- Infectious Diseases
Background:
- Genital tract mycoplasmas are microorganisms that can colonize the reproductive tract.
- Their role in infertility and pregnancy complications is not fully understood.
Purpose of the Study:
- To investigate the incidence of genital tract mycoplasmas in infertile couples and pregnant women.
- To determine the association of mycoplasmas with infertility, pregnancy outcomes, and the effectiveness of doxycycline treatment.
Main Methods:
- A study comparing mycoplasma isolation rates in infertile couples versus pregnant women.
- Monitoring mycoplasma presence throughout pregnancy and assessing treatment outcomes with doxycycline.
Main Results:
- Significantly higher mycoplasma isolation rates were found in infertile couples compared to pregnant women (P < 0.001).
- Mycoplasmas detected early in pregnancy persisted, and 5% of women acquired infection during gestation.
- No correlation was found between genital mycoplasmas and prematurity or low birth weight.
- Doxycycline eradicated mycoplasmas in 91% of couples, but pregnancy rates were similar in treated and untreated groups.
Conclusions:
- Genital mycoplasmas are not implicated in the etiology of reproductive failure.
- Mycoplasma infections do not appear to negatively impact pregnancy outcomes.
- Treatment with doxycycline, while effective for eradication, did not improve subsequent pregnancy rates.