Clinical Trials

Are you an adult who has asthma, or are you willing to be a healthy volunteer? This study aims to test a new and less invasive way to look at the levels of a protein called GSNOR in people who have asthma. High levels of this protein can lead to inflammation (swelling) in the airways. Normally, doctors measure GSNOR levels with bronchoscopy (a tube inserted through your mouth into your airways). But this often requires you to be sedated. In the new approach being studied here, you will breathe in a chemical that your body makes, called GSNO. Researchers will look at how much of the chemical is broken down in your breath. This will tell them what your GSNOR levels are. They will compare the levels between people who have asthma and people who do not to see whether the test works. To participate in this study, you should be between 18 and 80 years old and either have been diagnosed with asthma for at least a year or not have asthma and not smoke. This study is located in Cleveland, Ohio.

Are you an adult with both asthma and obesity? This study is testing whether a medicine called L-citrulline can help treat asthma and improve lung function in people who have obesity. To participate in this study, you must be 18 to 65 years old and have asthma and obesity. This study takes place in Durham, North Carolina.

The purpose of this study is to determine the occurrence of scarring of the heart (cardiac fibrosis) and inflammation in those with perinatally acquired Human Immunodeficiency Virus (HIV) infection compared to people not infected with HIV. The information learned from this research may help the investigator to better understand the link between cardiac fibrosis and cardiac dysfunction and inflammation in those with perinatally acquired HIV infection compared to the uninfected.

The purpose of this study is to see if adding a drug called Regadenoson to the EVLP circulation reservoir during perfusion of marginal donor lungs will help increase the likelihood that the donor lungs will become usable for transplantation.

This project will determine the health impact of parenthood on people with cystic fibrosis (CF). The study team will use retrospective data to provide relatively immediate evidence on parenthood's effect on pulmonary health.

The purpose of this study is to look at lung ventilation in people with cystic fibrosis over time (1 year) using magnetic resonance imaging (MRI) with an inhaled contrast gas, and compare these measures to lung function assessed by spirometry and multiple breath nitrogen washout. This study also looks at how these measures change in response to a pulmonary exacerbation and treatment (if applicable). Over the span of a year, participants would be asked to complete 3-5 visits to the University of North Carolina at Chapel Hill (UNC). with each lasting up to 4 hours. If participants do not have a pulmonary exacerbation during the year they would be asked to complete 3 visits (one at enrollment, a second roughly 2 weeks later, and the third approximately a year later). If participants do experience a CF pulmonary exacerbation they would complete 5 visits (Visit 1, Visit 2, two exacerbation visits with one before treatment and the other after, and Visit 3 at one year after Visit 1). Only one exacerbation per participant will be tracked. Participants are eligible for this study if they are 18 years old or older, have Cystic Fibrosis (CF) with mild lung disease (FEV1 >/= 60%), and can undergo an MRI. There are no known benefits for participating in this study.