Abstract：
:Maternal-deprivation of rodent pups is a relevant model of extreme early-life stress that can be relevant to the understanding of long-term effects of war, migration, parental loss and displacement. Although even mild stress during infancy affects brain development and behavior, the current study focused on the effects of six hour daily maternal-separation, a model that reflects the severe distress often experienced in those circumstances. This study emphasizes the effect of maternal separation on social behavior in the context of a variety of factors that measure cognitive and emotional behavior which were subject to principle component analysis. Sprague-Dawley pups were separated from the dam for 6 h each day during the first 3-weeks of life and underwent a battery of behavioral tests at 3-months of age. We found that rodents exposed to postnatal maternal deprivation displayed submissive behavior in resident-intruder and dominant-submissive tests, as well as significantly more anxiety and anhedonia than control rats. The results of multivariate statistical analysis show that the dominant-submissive behavior correlates with depressive, anxiety and social behavior and can be predicted with an accuracy of 86.2%. The increased submissive behavior in male rats that had been subjected to severe postnatal stress suggests that exposure to stress during infancy and childhood could have long-term effects on social relationships. The mechanism of the long-term effects on depression, anxiety and submissive behavior requires further investigation.
journal_name
Behav Brain Resjournal_title
Behavioural brain researchauthors
Frank D,Zlotnik A,Kofman O,Grinshpun J,Severynovska O,Brotfain E,Kut R,Natanel D,Melamed I,Boyko Mdoi
10.1016/j.bbr.2019.112025subject
Has Abstractpub_date
2019-10-17 00:00:00pages
112025eissn
0166-4328issn
1872-7549pii
S0166-4328(18)31650-4journal_volume
372pub_type
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