Medicine and Health Sciences Commons^™

Sex Differences In Mood And Anxiety-Related Outcomes In Response To Adolescent Nicotine Exposure, Tsun Hay Jason Ng

Electronic Thesis and Dissertation Repository

Nicotine dependence is causally linked to increased risk of mood/anxiety disorders in later life. Females are reported to experience a higher prevalence of anxiety/depressive disorders and challenges in smoking cessation therapies, suggesting a potential sex-specific response to nicotine exposure and mood/anxiety disorder risk. However, pre-clinical evidence of sex-specific responses to adolescent nicotine exposure is unclear. Thus, to determine any sex differences in anxiety/depressive-related outcomes, adolescent male and female Sprague Dawley rats received nicotine (0.4 mg/kg; 3x daily) or saline injections for 10 consecutive days, followed by behavioural testing, in-vivo electrophysiology and Western Blot analyses. Our results revealed that adolescent nicotine …

Therapeutic Gardening For Addiction Recovery, Hugo A. Rivera Lopez

Master's Projects and Capstones

Problem: The use of evidence-based alternative forms of therapy like horticulture therapy and therapeutic gardening is underutilized in substance use recovery programs in the United States. As the country continues to struggle with addiction, it is important that recovery programs look to and incorporate these alternative therapies into official curricula. Currently, 46.3 million individuals living in the United States are living with a substance use disorder (U.S Department of Health and Human Services’ Substance Abuse and Mental Health Services Administration, 2022).

Context: The intervention was implemented at an all-male substance use treatment facility in San Jose, CA that houses up …

Role Of Nucleus Accumbens Dopamine Receptor Signaling In The Suppression Of Punished Reward Seeking, Grace M. Joyner, Anna Caroline Toburen

Senior Theses

Previous studies have shown that within the nucleus accumbens (NAc), a brain region associated with motivation and reinforcement learning, activity of neurons expressing the dopamine D2 receptor (D2R neurons) act as a “break” on risky behavior associated with negative outcomes. Moreover, when these neurons are stimulated, rats were found to become more risk averse. However, the impact of dopamine signaling through NAc D2R neurons in risk avoidance is still unclear. To further explore the role of NAc dopamine signaling in punished reward-seeking, we tested rats in a novel punished food-seeking paradigm in which subjects are trained to choose between a …

Behavioral Markers And Endophenotypes Underlying Individual Differences In Ethanol Use, Haily R. Knapp

Honors Theses and Capstones

The main concern of this study is to evaluate the neurobiology of ethanol self-administration and cue-induced reinstatement in rats and its implications for Alcohol Use Disorder (AUD) prevention and treatment. The purpose of this study is to use a pre-clinical model of ethanol use to understand the individual effects at the neurobiological level. The study utilized economic demand and negative consequence testing to evaluate the rats' motivation to consume ethanol and their ability to relapse after periods of abstinence. The results showed individual and sex differences in ethanol consumption, with rats who placed a higher value on ethanol being more …