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Full-Text Articles in Medicine and Health Sciences

Differential Microglial Activation Following Immune Challenge In Peripubertal And Adult Outbred Mice, David J. Placzek Jul 2015

Differential Microglial Activation Following Immune Challenge In Peripubertal And Adult Outbred Mice, David J. Placzek

Masters Theses

Pubertal development is a time of growth and development in the brain, leading to high sensitivity during this period. Past research in our lab has shown that shipping female inbred and outbred mice during pubertal development alters their sensitivity to steroid hormones in adulthood, thus affecting sexual receptivity, cognition, depression-like behavior, and anxiety-like behavior. Here, we test the hypothesis that mice treated with lipopolysaccharide during pubertal development would have more active microglia, the brain's immune cells, after injection than mice treated with lipopolysaccharide in adulthood. No significant interactions were observed between treatment and age between any brain area measured, suggesting …


Increased Body Weight In Adulthood Following A Peripubertal Stressor And Proposed Mechanism For Effects Of Increased Adiposity On Estrogen-Dependent Behaviors, Christina F. Gagliardi Nov 2014

Increased Body Weight In Adulthood Following A Peripubertal Stressor And Proposed Mechanism For Effects Of Increased Adiposity On Estrogen-Dependent Behaviors, Christina F. Gagliardi

Masters Theses

Exposure to certain stressors during a sensitive period around puberty can lead to enduring effects on an animal’s response to estradiol. In estradiol-influenced behaviors, such as sexual receptivity, hippocampal-dependent learning and memory, depression-like behavior, and anxiety-like behaviors, exposure to a peripubertal stressor such as shipping stress or an injection of lipopolysaccharide (LPS) can eliminate or even reverse the normal response to estradiol. In addition to regulating these behaviors, estradiol play a role in the regulation of body weight. While some of the previous studies touched on short-term effects on body weight, no systemic long-term study of the effects of a …