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Meconium Influences Pulmonary Short-Chain Fatty Acid Concentration in Porcine Meconium Aspiration Model
Harry Ramcharran1, Auyon Ghosh2, Qinghe Meng1
1Department of Surgery, SUNY Upstate Medical University, Syracuse, NY, USA.
Biomedicine Hub
|January 16, 2025
Summary
The meconium microbiome may influence meconium aspiration syndrome (MAS) severity. Propionic acid from meconium bacteria can harm lung cells and increase inflammation in MAS.
Area of Science:
- Neonatal research
- Pulmonary medicine
- Microbiome research
Background:
- Meconium aspiration syndrome (MAS) severity factors are unclear.
- The role of the respiratory microbiome in MAS is under investigation.
Purpose of the Study:
- To investigate the link between the meconium microbiome and MAS severity.
- To determine if short-chain fatty acids (SCFAs) produced by meconium bacteria affect lung injury.
Main Methods:
- A piglet model of MAS was established by aspirating meconium.
- Bronchoalveolar lavage fluid (BALF) was analyzed for microbiome and SCFA content.
- In vitro studies assessed SCFA effects on lung epithelial cells.
Main Results:
- MAS piglets required more fluids and vasopressors, indicating lung injury.
- Meconium and BALF microbiomes differed, with increased propionic acid-producing bacteria in MAS.
- Higher propionic acid levels in MAS BALF correlated with reduced cell viability and increased inflammation.
Conclusions:
- Meconium may harbor a microbiome that contributes to MAS severity.
- Bacterial byproducts like propionic acid can negatively impact the pulmonary epithelium.
- Understanding the meconium microbiome is crucial for managing MAS.
