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Choriodecidual infection and preterm birth
Robert L Goldenberg1, William W Andrews, John C Hauth
1University of Alabama at Birmingham, Department of Obstetrics and Gynecology, 35249-7333, USA.
Insights
Preterm birth, affecting 11% of U.S. births, is often caused by bacterial infections. Eradicating these infections aims to reduce preterm labor and improve infant outcomes, but treatment results are mixed.
Area of Science:
- Obstetrics
- Neonatology
- Infectious Disease
Background:
- Preterm birth complicates 11% of U.S. births, leading to significant perinatal mortality and morbidity.
- Infants born weighing less than 1000 grams or before 28 weeks gestation face the highest risks.
- Bacterial infections of the chorioamnion, originating from the vagina, are increasingly implicated as a primary cause of preterm birth.
Purpose of the Study:
- To investigate the role of bacterial infections in preterm birth.
- To understand the inflammatory mechanisms driving preterm labor and membrane rupture.
- To evaluate the effectiveness of treatment trials aimed at infection eradication and preterm birth reduction.
Main Methods:
- Review of recent evidence linking bacterial chorioamnionitis to preterm birth.
- Analysis of inflammatory pathways, including cytokine, prostaglandin, and metalloprotease production.
- Examination of results from clinical trials targeting infection treatment.
Main Results:
- Bacterial infections are suggested to cause the majority of preterm births.
- Inflammatory processes involving cytokines, prostaglandins, and metalloproteases are key mechanisms.
- Treatment trials for infection eradication have yielded mixed results in reducing preterm birth.
Conclusions:
- Bacterial infections play a significant role in preterm birth etiology.
- Understanding inflammatory pathways is crucial for managing preterm labor.
- Further research is needed to optimize interventions for preventing preterm birth.
Abstract:
Of all U.S. births, 11% occur preterm. These infants are responsible for the majority of perinatal mortality and morbidity. Infants at highest risk are those born weighing < 1000 g and those born at <28 weeks gestation. Recent evidence suggests that the majority of these preterm births are caused by bacterial infections of the chorioamnion, with the organisms originating in the vagina. The mechanisms leading to preterm labor and rupture of membranes involve an inflammatory response involving increased production of cytokines, prostaglandins, and metalloproteases. Results of treatment trials to eradicate the infection and reduce preterm birth have been mixed.