Prenatal stress: consequences of glucocorticoids on hippocampal development and function

Area of Science:

• Neuroscience
• Endocrinology
• Developmental Psychology

Background:

• Prenatal stress exposure in offspring is linked to numerous physiological and behavioral changes.
• Elevated glucocorticoid secretion during prenatal development is a key factor in these alterations.
• The developing hippocampus is particularly susceptible to these stress-induced effects.

Purpose of the Study:

• To highlight alterations in offspring physiology and behavior resulting from prenatal stress-induced elevations in glucocorticoids.
• To identify specific changes in the hippocampus caused by glucocorticoid actions during development.
• To explore the potential for early postnatal interventions to ameliorate these effects.

Main Methods:

• Review of studies examining the impact of prenatal stress on offspring.
• Analysis of glucocorticoid-induced changes in the developing hippocampus.
• Evaluation of the effects of early postnatal environmental manipulations.

Main Results:

• Prenatal stress leads to reduced steroid receptors in the hippocampus.
• Offspring exhibit enhanced stress hormone secretion and increased emotional reactivity.
• Early postnatal interventions like adoption and handling can ameliorate some alterations.

Conclusions:

• Prenatal stress-induced glucocorticoid effects persist into the early postnatal period, causing long-term hippocampal and behavioral changes.
• The developing hippocampus is vulnerable to prenatal stress, impacting receptor density and cell development.
• These findings underscore the critical role of the early environment in moderating prenatal stress impacts.