Exposure to stress during pregnancy influences the trajectory of brain development resulting in permanent alterations that may contribute to increased susceptibility to subsequent cognitive or neuropsychiatric disorders. In this manuscript, we examined the effects of prenatal stress on the expression of basic fibroblast growth factor (FGF-2), an important molecular regulator of development and plasticity, in adult male rats under basal conditions as well as in response to acute or chronic stress. Baseline FGF-2 mRNA levels were differentially influenced by gestational stress in a variety of brain regions, with significant decreases in prefrontal cortex and increases in entorhinal cortex and striatum. By itself, postnatal stress similarly decreased trophic factor expression in prefrontal cortex while evoking stimulation elsewhere. Gestational stress altered the pattern of FGF-2 expression in response to adult stress, completely reversing the pattern in the prefrontal cortex (stimulatory instead of inhibitory), blunting the response in the entorhinal cortex and desensitizing the response in the striatum. These effects point to a unique interference of chronic prenatal stress with both ongoing FGF-2 expression and its responses to subsequent stressors, lasting into adulthood. Given the multifaceted role of FGF-2 in synaptic development, maintenance and plasticity, these data provide detailed mechanistic evidence as to how prenatal stress elicits lifelong effects on synaptic function. The abnormal modulation of FGF-2 gene expression in specific brain regions in response to subsequent stress in adulthood may impair the normal adaptive responses of the cell to challenging situations. (copyright) 2005 Elsevier Inc. All rights reserved.
Prenatal stress elicits regionally selective changes in basal FGF-2 gene expression in adulthood and alters the adult response to acute or chronic stress / F. Fumagalli, F. Bedogni, T. A. Slotkin, G. Racagni, M.A. Riva. - In: NEUROBIOLOGY OF DISEASE. - ISSN 0969-9961. - 20:3(2005), pp. 731-737.
|Titolo:||Prenatal stress elicits regionally selective changes in basal FGF-2 gene expression in adulthood and alters the adult response to acute or chronic stress|
FUMAGALLI, FABIO (Primo)
BEDOGNI, FRANCESCO (Secondo)
RACAGNI, GIORGIO ANGELO (Penultimo)
RIVA, MARCO ANDREA (Ultimo)
|Parole Chiave:||animal experiment; animal tissue; article; brain region; controlled study; corpus striatum; desensitization; entorhinal cortex; evoked response; female; gene expression; male; nerve cell plasticity; nonhuman; prefrontal cortex; pregnancy; priority journal; rat; stress; synapse; fibroblast growth factor 2; messenger RNA|
|Settore Scientifico Disciplinare:||Settore BIO/14 - Farmacologia|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.nbd.2005.05.005|
|Appare nelle tipologie:||01 - Articolo su periodico|