http://www.cnr.it/ontology/cnr/individuo/prodotto/ID38529
Interaction with stressed mothers affects corticosterone levels in pups after reunion and impairs the response to dexamethasone in adult mice (Articolo in rivista)
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- Label
- Interaction with stressed mothers affects corticosterone levels in pups after reunion and impairs the response to dexamethasone in adult mice (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Moles A; Sarli C; Bartolomucci A; D'Amato FR. (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Institute of Neuroscience, CNR, Via del Fosso di Fiorano 64, 00137 Roma, Italy (literal)
- Titolo
- Interaction with stressed mothers affects corticosterone levels in pups after reunion and impairs the response to dexamethasone in adult mice (literal)
- Abstract
- Background: Early adverse experiences are preeminent factors for the development of
affective disorders. In the present study, we analyzed the effects of different postnatal
manipulations applied either on the mother or on the offspring in mice. Maternal behavior
and adrenocortical activity of both mothers and offspring at the end of postnatal stress and
at adulthood were considered.
Methods: From postnatal day (PND) 1 to 14 mice underwent 15 min of: (a) brief
(15 min) pups' exposure to clean bedding (CB: clean bedding), (b) mothers' exposure
to the odor of a novel male (SM: stressed mother) or (c) mothers' exposure to a clean
cage (CSM: control stressed mother), and (d) standard rearing (N-H: non-handled). The
behavior of mouse dams during and after stress sessions was analyzed. Serum
corticosterone of mothers and pups at the end of the stress session and 30 min
after reunion was assessed on PND 14. Moreover, anxiety levels and HPA-axis inhibitory
feedback in response to dexamethasone administration were evaluated in adult male
offspring.
Results: Overall, during the 14 days of treatment CB mothers when reunited with their
pups showed higher maternal behavior than other dams. After the last stress (PND 14) SM
and CSM maternal corticosterone levels increased as well as those of CB pups. While 30 min
of mother-infant interaction restored baseline corticosterone levels in SM and CSM
mothers and in CB pups, SM and CSM offspring showed a decrease of corticosterone under
baseline levels. At adulthood, SM and CSM males did not show the suppressive hormonal
response to dexamethasone treatment. Moreover, adult CB and SM male mice displayed
decreased anxiety in the open field. (literal)
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