Behavioral Immunology Laboratory Projects

Collaborative Projects

The purpose of this research study is to better understand how the brain’s dopamine system may contribute to depression in older adults. Dopamine is a neurotransmitter, a chemical messenger released by nerve cells. Some medications used to treat depression affect dopamine but most do not. In this study you will have tests of your memory, concentration, thinking, and walking. You will have brain scans using magnetic resonance imaging (MRI). We are performing these scans to understand more about how the brain’s dopamine system may be different in older adults who are depressed. 

Dopaminergic Dysfunction in Late-Life Depression (R2D3)

The Effect of Rumination, Anxiety, and Worry on Aging and Dementia Risk (High Worry) (RAW)

Anxiety is a risk factor for several major diseases of aging including cardiovascular and autoimmune diseases, Alzheimer’s Disease and related dementias (ADRD). As anxiety disorders have the highest lifetime prevalence of any psychiatric illness, anxiety and its phenotypes potentially represent a highly prevalent and modifiable risk factor for diseases of aging.

This is a research study to examine how childhood experiences alter brain circuits that control stress responses and how these changes may influence stress reactivity and mental health in adulthood. Understanding how childhood experiences affect the brain could be helpful in developing methods of early detection or prevention of mental health issues or treatment effects.

EMBODY

Follow-up Longitudinal Analysis of Moderate-intensity Exercise (FLAME)

This is a follow-up of the IGNITE trial (see below) of the efficacy of an exercise intervention for brain health among older sedentary adults. The Behavioral Immunology Laboratory is responsible for assessing a number of biomarkers in this study and for storing biological samples. 

Investigating Gains in Neurocognition in an Intervention Trial of Exercise (IGNITE)

The IGNITE study is a comprehensive, multi-site study that is investigating how an exercise intervention affects the brain. Previous research from lead investigator, Kirk Erickson, PhD., has indicated that exercise may increase the size of the hippocampus. This exciting study is investigating that and potential biological mediators of this relationship at the University of Pittsburgh, Northeastern University, and Kansas University. The Behavioral Immunology Laboratory is responsible for assessing a number of biomarkers in this study and for storing biological samples. 

PI: Nadine Melhem, PhD

PI: Brian Thoma, Ph.D.            

Adolescent Biology of Stress Study (ABOSS)

Stressful experiences during a young person’s life can have an impact on their health and wellbeing. The purpose of this study is to help researchers learn more about stress and mental health in teenagers and to find out how these change over time. Researchers hope their findings lead to a better understanding of factors that affect teens’ mental health in the future.