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Synchronized maternal-infant elevations of primate CSF CRF concentrations in response to variable foraging demand
Jeremy D Coplan1, Margaret Altemus, Sanjay J Mathew
1Department of Psychiatry, State University of New York Downstate Medical Center, Brooklyn, NY 11203, USA. Copstat00@aol.com
CNS Spectrums
|September 13, 2005
Summary
Maternal stress during infancy synchronizes with infant stress responses via central corticotropin-releasing factor (CRF). This study in macaques shows parallel CRF increases in mothers and infants under variable foraging demand, suggesting a biological communication mechanism.
Area of Science:
- Neuroscience
- Developmental Psychology
- Primatology
Background:
- Understanding psychiatric disorder origins requires studying environment-gene interactions during neurodevelopment.
- Early life stress significantly impacts infant neurobiology and psychopathology vulnerability.
Purpose of the Study:
- To investigate if central corticotropin-releasing factor (CRF) acts as a biological mediator for synchronized stress responses between mothers and infants.
- To examine the impact of a variable foraging demand (VFD) stressor on maternal and infant CRF levels.
Main Methods:
- Utilized 24 mother-infant bonnet macaque dyads.
- Exposed mothers to a 16-week variable foraging demand (VFD) stressor.
- Collected simultaneous cerebrospinal fluid (CSF) samples from mothers and infants pre- and post-VFD.
Main Results:
- Maternal CSF CRF increased by 26% post-VFD.
- Infant CSF CRF increased by 45% over the VFD period.
- Infant CRF response magnitude positively correlated with maternal CRF response, indicating synchronized expression.
Conclusions:
- Maternal stress response to VFD is communicated to infants via a CRF-mediated mechanism.
- The VFD stressor activates the central CRF system in both mothers and infants in parallel.
- This dyadic CRF synchrony offers a testable hypothesis for early-life stress communication.