Lipopolysaccharides and Pain (IMAGE) KU Leuven Caption Bacterial components (LPS) activate the cation channel TRPA1 in sensory neurons, causing acute pain and inflammation. Credit Karel Talavera Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.