Abstract
Objective: Interleukin (IL)-10 is a cytokine with anti-inflammatory properties that plays pivotal roles in immune recognition and maintenance of pregnancy, limiting the harmful effects of pro-inflammatory modulators. The aim of this work was to characterize the contribution of amnion and choriodecidua regions of the human fetal membranes in the production of IL-10 after selective stimulation with Candida albicans, Gardnerella vaginalis and Streptococcus agalactiae.
Methods: Pre-labor human fetal membranes were cultured in a two-compartment tissue culture system and stimulated with 1 × 106 CFU/ml of each pathogen added to either the amniotic or choriodecidual region or both.
Results: Candida albicans and G. vaginalis were the pathogens most effective in inducing IL-10 secretion, increasing 20 and 10 times, respectively, the levels of this cytokine in the choriodecidual compartment. Stimulation with S. agalactiae was effective only in the choriodecidual region, increasing two times IL-10 concentration.
Conclusions: Synthesis and secretion of IL-10 in response to three different pathogens associated with intrauterine infection and preterm birth are differential and depend on the nature of the microorganism and initial contact region.
Acknowledgements
We thank Ingrid Mascher for editorial assistance. We would also like to thank the women for their cooperation in donating membranes for research.