"Discovery: Protective Cells in Airways Sense and Prevent Fluid Aspiration"
Scientists have identified rare neuroendocrine cells in the airways that trigger the cough reflex when water or acid enters the windpipe, protecting the lungs from potential infection and inflammation. These cells release a chemical called ATP, which activates nerves signaling the brain to initiate the coughing and swallowing reflexes. The discovery could lead to new treatments for respiratory disorders such as chronic coughs and pneumonia, and may help explain difficulties in swallowing or inhaling water, particularly in aging individuals. Further research in humans is planned to explore the potential implications of these findings.