Perinatal Programming of Circadian Clock-Stress Crosstalk

Area of Science:

• Neuroscience
• Endocrinology
• Developmental Biology

Background:

• The circadian clock and stress system interact reciprocally, influencing physiological homeostasis.
• Disruptions to this crosstalk, caused by factors like shiftwork or chronic stress, are linked to metabolic, immune, and mood disorders.
• Both systems mature during the perinatal period, a critical window for developmental programming.

Purpose of the Study:

• To explore the role of maternal and embryonic circadian clocks during pregnancy and postnatal development.
• To understand how external factors during development can program future physiological functions.
• To investigate the long-term impact of circadian-stress interactions on health outcomes.

Main Methods:

• Review of existing literature on circadian rhythms, stress response, and developmental programming.
• Analysis of experimental data from rodent models investigating perinatal programming.
• Exploration of molecular mechanisms, including epigenetic modifications, involved in developmental programming.

Main Results:

• Maternal stress signals and photoperiod alterations during development can permanently alter gene expression via epigenetic mechanisms.
• Early life disruptions in the circadian-stress axis can program later-life susceptibility to disorders.
• The precise roles of maternal and embryonic circadian clocks in development remain incompletely defined.

Conclusions:

• Understanding the developmental programming of the circadian-stress axis is crucial for preventing stress-associated disorders.
• Further research into the maternal and embryonic circadian clock functions is needed.
• Targeting developmental programming may offer novel therapeutic strategies for enhancing stress resistance.