Drug Prevents Long-Term Effects of Childhood Trauma in Mice

Scientists have successfully used a drug to block the long-term effects of early childhood trauma in mice, offering a potential preventative measure against lasting psychological damage. The research, a collaboration between Germany's Max Planck Institute of Psychiatry and Sweden's Karolinska Institute, focused on how early-life stress can alter the body's stress hormone system.

In the study, mice pups experienced stressful early lives due to their mothers receiving insufficient nesting material. While these mice appeared healthy, they consistently occupied lower social ranks throughout their lives. However, when administered a compound called SAFit2, this pattern of social subordination did not emerge. This suggests the drug can mitigate the negative social consequences of early adversity.

The drug SAFit2 works by blocking the FKBP51 protein, which plays a crucial role in regulating cortisol, the body's primary stress hormone. Unfavorable early experiences can lead to an overproduction of FKBP51, making cortisol receptors less sensitive. This impairs the body's ability to signal that a stressful situation has passed, leaving it in a prolonged state of heightened alert. "You can think you are very resistant to stress, and your body is still producing large amounts of cortisol without you being aware of it," explained Matthias Schmidt, a lead researcher.

The compound SAFit2 was given to the mothers during their stressful period, and it passed to the pups through their milk. The treated mice later exhibited social behavior similar to that of animals that had not experienced any adversity. While the current research is limited to mice and is preventative, it opens avenues for exploring similar interventions in humans to prevent the debilitating effects of childhood trauma.

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You can think you are very resistant to stress, and your body is still producing large amounts of cortisol without you being aware of it.