Recent studies suggest that early-life stress may make individuals more prone to mood and anxiety disorders later. This research, led by The Ohio State University and presented at the Society for Neuroscience meeting in San Diego, focuses on mast cells, immune cells known for their role in allergic reactions, which are now believed to influence neurodevelopment following childhood trauma. Kathryn Lenz, the lead researcher and an assistant professor of psychology at Ohio State, along with her team, including Angela Saulsbery, are exploring the connection at a molecular level between adverse childhood experiences and mental health issues like depression and anxiety in later life.
Their research indicates that mast cells might be key in developing preventive treatments for these psychological disorders in children exposed to trauma. The study involved comparing stressed and unstressed rats, taking into account their sex and timing of stress exposure. They discovered that chronic stress led to a significant increase in brain mast cell activity. This was particularly notable in male rats, aligning with evidence suggesting that early childhood trauma might have more severe impacts on males.
The study also aimed to determine if stress contributes to a more permeable blood-brain barrier, potentially leading to an increase in mast cells and subsequent changes in brain development. Histamine, released by these cells, commonly associated with allergies, might play a role in these developmental changes. Lenz’s team is working to understand how early life stressors affect mast cell function and the potential long-term impacts, including an increased risk for addiction, mental health issues, and even cardiovascular diseases. This research is part of Ohio State’s Wexner Medical Center’s Institute for Behavioral Medicine Research.
