Mouse and PDE4 inhibitor (IMAGE) Experimental Biology Caption In a new study, researchers found that a PDE4 inhibitor increased salivation because of PDE4 inhibition in the salivary glands and in the autonomic nervous system, which regulates involuntary body processes such as breathing. The findings could lead to a new treatment for dry mouth. Credit Abigail Boyd, University of South Alabama 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.