Neuroinflammation After Myocardial Infarction - Imaging Substudy
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The purpose of the study is to see if positron emission tomography and magnetic resonance imaging (PET/MRI) with an investigational drug called [18F]DPA-714 will show inflammation in the brain after a heart attack. This study may help physicians and researchers better understand the role of brain inflammation in heart disease and develop new treatments to protect the brain.
Condition or disease
The primary objective of this study is to measure the concentration and the regional brain distribution of activated brain microglia/macrophages using the PET ligand [18F]DPA-714 in individuals with recent AMI. The basic premise is that AMI leads to systemic inflammation that includes inflammation in the brain. The PET tracer [18F]DPA-714 binds to the 18 kDa translocator protein (TSPO, also known as the peripheral benzodiazepine receptor) in the mitochondria of activated microglia/macrophages and provides a non-invasive measure of neuroinflammation. The estimates of brain TSPO binding in patients with recent AMI will be compared to a matched group of patients who have undergone a recent elective PCI procedure.
TPSO-PET measurement of neuroinflammation after acute myocardial infarction [ Time Frame: 2 years ]
The regional brain concentrations of [F-18]DPA-714, a PET imaging marker of neuroinflammation, will be compared between study participants who have recently been hospitalized for acute myocardial infarction (AMI) and a control group undergoing elective percutaneous coronary interventions (PCI).
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Layout table for eligibility information
Ages Eligible for Study:
50 Years and older (Adult, Older Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
Participation in UAB IRB protocol "Neuroinflammation After Acute Myocardial Infarction" (IRB-300002751, PI Lazar).
50 years of age or older
. English speaking with at least 8th grade education
High or mixed affinity binder for TSPO ligands based on genotyping for single nucleotide polymorphism (SNP) rs6971.
Admission to UAB Hospital for ST-elevation acute myocardial infarction (AMI) and treatment with percutaneous coronary intervention (PCI) OR Undergoing elective percutaneous coronary intervention (PCI)
Contraindication to MRI
Serious medical co-morbidity that may interfere with participation
Prior myocardial infarction
Prior coronary artery bypass grafting
Prior angioplasty and/or coronary artery stent placement (PCI group only)
History of traumatic head injury defined by a loss of consciousness ≥30 minutes or seizure at the time of injury
Diagnosis of major depression
Diagnosis of dementia
Low affinity binder for TSPO ligands based on genotyping for SNP rs6971.