There was no significant difference in rat body weight among the experimental groups.
The EtOH-induced attenuation of the testosterone surge eliminated the normal sex difference in rat callosal size.
Still, two crucial differences exist between the two studies which may preclude too strong a conclusion on gender differences in rats as (1) different strains were used (Long-Evans vs. Wistar rats) and (2) animals were tested at different ages (8 9 weeks vs. 17 18 weeks).
NOX-C89, a PEGylated variant of the first CGRP-binding l-aptamer, STAR-F12-Δ43 48 STAR-F12-Δ43 48erenthatly binds to mouse/rat αCGRpreferentiallyd to elucidate strain differences in rats regarding CGRP release and bindsioral responses to noxious heat [32].
Daniel Dombeck, a neurobiologist at Northwestern University in Evanston, Illinois, who was not involved with the research, agrees that the new study is "suggestive" that the lack of proximal cues are responsible for many of the differences in rats' brains in virtual reality.
Individual differences in rats' trait anxiety were related to the negative and positive impact, respectively, of chronic stress and chronic treatment with a corticotrophin releasing factor receptor 1 (CRFR1) antagonist on hippocampal cell proliferation [51].
There were large inter-individual differences in rats in this task, similar to those observed using the T-maze delayed-discounting paradigm, and these differences, again, were independent of the ability to learn the task [ 54].
However, in contrast to the extensive sex specific differences in rats with males showing pulsatile GH secretion and females showing more continuous GH levels, data on sex specificity of GH secretion in humans is less clear.
Neither we nor deJong et al. (2006) found any effect on the FST test of swimming despair [ 17, 18] and this finding is different than that reported by Homberg et al. [ 25] but they treated rats earlier P25-466); moreover, they found no differences in rats treated at a later age.
The hippocampus appears to mediate this effect, through changes in the hippocampal glucocorticoid receptor (GR) induced by differences in rat maternal attachment behaviors (licking and grooming) [2].
