Immunobiology of Acute Chorioamnionitis

Area of Science:

• Obstetrics and Gynecology
• Immunology
• Infectious Diseases

Background:

• Acute chorioamnionitis is a common pregnancy complication causing preterm labor and fetal/maternal infections.
• It involves neutrophilic infiltration and inflammation at the maternal-fetal interface.
• Consequences include fetal lung, brain, and gastrointestinal tract injury.

Purpose of the Study:

• To review the pathogenesis, immunobiology, and mechanisms of acute chorioamnionitis.
• To explore the role of vaginal microbiome and dysbiosis.
• To discuss hematogenous infections and their impact.

Main Methods:

• Review of current literature on acute chorioamnionitis.
• Analysis of animal models for understanding disease mechanisms.
• Examination of immune cell roles in maternal-fetal compartments.

Main Results:

• Ascending infections, particularly Ureaplasma species, are common causes.
• Vaginal dysbiosis is linked to ascending infections and inflammation.
• Hematogenous infections (e.g., Zika, CMV, Listeria) can cause severe fetal injury.

Conclusions:

• Acute chorioamnionitis pathogenesis involves ascending and hematogenous routes.
• Immune cell dynamics and maternal tolerance breakdown are critical.
• Novel therapeutic strategies are emerging for managing this condition.