alexa Prenatal stress diminishes neurogenesis in the dentate gyrus of juvenile rhesus monkeys.
Psychiatry

Psychiatry

Journal of Depression and Anxiety

Author(s): Coe CL, Kramer M, Czh B, Gould E, Reeves AJ,

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Abstract BACKGROUND: Early life stress, including during fetal development, has been hypothesized to predispose individuals to several illnesses and psychiatric disorders later in adulthood. METHODS: To determine whether prenatal stress alters neural, hormonal, and behavioral processes in nonhuman primates, pregnant rhesus monkeys were acutely stressed on a daily basis for 25\% of their 24-week gestation with an acoustical startle protocol. At 2 to 3 years of age, hippocampal volume, neurogenesis in the dentate gyrus, and cortisol levels were evaluated in the offspring generated from stressed and control pregnancies. RESULTS: Prenatal stress, both early and late in pregnancy, resulted in a reduced hippocampal volume and an inhibition of neurogenesis in the dentate gyrus. These changes were associated with increased pituitary-adrenal activity, as reflected by higher cortisol levels after a dexamethasone suppression test, and also with behavioral profiles indicative of greater emotionality. CONCLUSIONS: These findings indicate that the prenatal environment can alter behavior, dysregulate neuroendocrine systems, and affect the hippocampal structure of primates in a persistent manner.
This article was published in Biol Psychiatry and referenced in Journal of Depression and Anxiety

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