Abstract：
:Outbred rat lines such as Wistar rats are commonly used for models of depressive disorders. Such rats arise from random mating schedules. Hence, genetic drift occurs in outbred populations which could lead to genotypic and phenotypic heterogeneity between rats from different vendors. Additionally, vendor specific rearing conditions could contribute to intrastrain variability. In the present study differences in behavioral responses to the chronic mild stress (CMS) model of depression within Wistar rat strains from different vendors are described. DNA methylation studies and mRNA expression analysis of p11 revealed that the behavioral differences between the substrains are reflected at the epigenetic and genetic level. The results suggest that there are breeder-dependent differences in vulnerability to stress in the CMS model of depression, which might bear on the validity of the model and contribute to contradictory findings and difficulties of replication between laboratories. P11 mRNA expression seems to be differently regulated depending on the quality of the stress response evoked by CMS exposure.
journal_name
Brain Resjournal_title
Brain researchauthors
Theilmann W,Kleimann A,Rhein M,Bleich S,Frieling H,Löscher W,Brandt Cdoi
10.1016/j.brainres.2016.04.041subject
Has Abstractpub_date
2016-07-01 00:00:00pages
505-515eissn
0006-8993issn
1872-6240pii
S0006-8993(16)30261-Xjournal_volume
1642pub_type
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