Chuck (IMAGE) Washington University School of Medicine Caption A large percentage of patients don't respond to standard antidepressant therapies, so it's important to find therapies that help these patients, according Charles R. Conway, M.D., a professor of psychiatry at Washington University. The rapid improvements in many study patients suggests nitrous oxide may help people with treatment-resistant depression. Credit Matt Miller 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.