Research on Omega-3 Fatty Acids and Uterine Infections
Impact of Uterine Infections on Pregnancy
Infections within the uterus significantly contribute to complications during pregnancy, including miscarriage, preterm birth, and stillbirth. One notable bacterium, Fusobacterium nucleatum, commonly found in the mouth, has been associated with 10-30% of preterm births.
Mechanism of Infection and Inflammation
Pregnancy-related hormonal changes can adversely affect gum health, leading to bleeding gums. This allows F. nucleatum to enter the bloodstream and reach the placenta, where it can induce inflammation. Such inflammation may result in miscarriage or stillbirth.
Experimental Findings at Columbia University
Study Overview
Researchers at Columbia University in New York conducted experiments on mice to determine if omega-3 fatty acid supplements could mitigate placental inflammation caused by F. nucleatum and prevent miscarriage. Their findings were published in JCI Insight.
Methodology and Results
In their experiments, the team injected F. nucleatum into pregnant mice during the later stages of gestation. This resulted in the bacteria reaching the uterus, triggering inflammation in the placenta and leading to preterm births and other complications. The study also identified a link between this inflammation and a specific immune protein.
Effects of Omega-3 Supplements
Inhibition of Inflammation
To counteract the inflammation caused by F. nucleatum, the researchers explored the use of omega-3 supplements, known for their anti-inflammatory properties in conditions like rheumatoid arthritis. Subsequent experiments demonstrated that these supplements effectively inhibited placental inflammation and reduced the growth of F. nucleatum in pregnant mice, resulting in fewer incidents of preterm births, miscarriages, and stillbirths.
Future Directions and Clinical Trials
Next Steps in Research
Lead researcher Professor Yiping Han expressed the goal of finding a safe anti-inflammatory agent for pregnant women. Omega-3 supplements are already advised for pregnant women to promote fetal health. Following these initial mouse studies, Professor Han’s team aims to initiate clinical trials in pregnant women to evaluate the potential of omega-3 supplements in preventing miscarriages and complications associated with uterine infections.
References
Garcia-So J, Yang X, Rubinstein MR, et al. Omega-3 fatty acids suppress Fusobacterium nucleatum-induced placental inflammation originating from maternal endothelial cells. JCI Insight 2019;4(2):e125436. doi: 10.1172/jci.insight.125436.
Columbia University Irving Medical Center, Press Release. “Could omega-3 fatty acids help prevent miscarriages? 7 Feb 2019.