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• W3096948905 endingPage "799" @default.
• W3096948905 startingPage "799" @default.
• W3096948905 abstract "The chronic stress of social isolation is a valid predictor of cognitive pathology. This study aimed to compare the effects of long-term social isolation on female versus male Wistar rats' learning and memory. We hypothesized that prolonged social isolation stress, which starts early in life, would affect learning in a sex-dependent manner.Social isolation started at the edge of early to mid-adolescence and lasted 9 months. The rat's cognitive abilities were assessed by habituation and reactivity to novelty in the open field (OF) test, spatial memory in the Morris water maze (MWM), and the conditioned passive avoidance (PA) reflex. Basal serum corticosterone levels were assessed using an enzyme-linked immunosorbent assay.Regardless of the housing conditions, females habituated to the OF under low illumination slower than males. Under bright light, the single-housed rats showed hyporeactivity to novelty. In the MWM, all the rats learned to locate the platform; however, on the first training day, the single-housed females' speed was lower relative to other groups. Four months later, in the post-reminder probe trial, the single-housed rats reached the area around the platform site later, and only males, regardless of housing conditions, preferred the target quadrant. Single-housed rats, irrespective of sex, showed a PA deficit. There was a more pronounced conditioned fear in the single-housed males than in females. In both male and female rats, basal corticosterone levels in rat blood serum after 9 months of social isolation did not differ from that in the group-housed rats of the corresponding sex. Meanwhile, females' basal corticosterone level was higher than in males, regardless of the housing conditions. The relative weight of the adrenal glands was increased only in single-housed females.Under long-term social isolation, started early in life, single-housed females compared with males showed more pronounced cognitive impairments in the MWM and PA paradigm, findings that specify their greater vulnerability to the stress of prolonged social isolation." @default.
• W3096948905 created "2020-11-09" @default.
• W3096948905 creator A5004480632 @default.
• W3096948905 creator A5044125107 @default.
• W3096948905 creator A5076712772 @default.
• W3096948905 date "2020-10-30" @default.
• W3096948905 modified "2023-10-01" @default.
• W3096948905 title "Prolonged Social Isolation, Started Early in Life, Impairs Cognitive Abilities in Rats Depending on Sex" @default.
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