Newswise A $53.6 million grant from the National Institutes of Health will aid brain scientists, including a researcher from The University of Texas Health Science Center at Houston (UTHealth), in studying the role of incidental white matter lesions, or WMLs, in dementia among diverse people with cognitive complaints.
The study is led by UC Davis School of Medicine in partnership with UTHealth. It is a new and critical part of the NIHsVascular Contributions to Cognitive Impairment and Dementia(VCID) research program.
Co-principal investigator isMyriam Fornage, PhD, professor of genetics at theBrown Foundation Institute of Molecular Medicine for the Prevention of Human Diseasesat McGovern Medical School at UTHealth. Fornage is a leading researcher on the molecular genetics of cerebrovascular disease.
Our team has been at the forefront of genetic studies of WMLs for two decades, Fornage said. Through the genetic risk profiles we will develop, we will have an opportunity to apply what we have discovered and improve the precision with which we identify patients with a higher prior probability of cognitive impairment and dementia. At the same time, we will be contributing new resources for dementia research everywhere.
The principal investigator isCharles DeCarli, MD, professor of neurology, director of theUC Davis Alzheimers Disease Centerand the nations foremost expert on the role of subcortical cerebrovascular disease in cognitive decline. In the last few years, DeCarli has been awarded national and state research grants exceeding $33 million.
The magnitude of this NIH grant underscores UC Davis Alzheimers Disease Centers national prominence and research leadership, said UC Davis School of Medicine Dean Allison Brashear,MD, a neurologist nationally known for her groundbreaking research in movement disorders. This multiyear research award will enable us to make game-changing advancements in our understanding and treatment of dementia.
WMLs occur when tissue deep in the brain becomes injured, often due to changes in small blood vessels. They are common and often found on brain MRIs of people who have concerns about their brain health.
Why or how WMLs are associated with cognitive decline is not known. Questions surround whether certain WML characteristics, such as size and location, make them greater risk factors for dementia. It also isnt clear how comorbidities additional health conditions such as heart disease or diabetes together with WMLs increase risk for cognitive decline. Defining these connections is essential to improving outcomes for the 5.7 million people in the U.S. affected by cognitive impairment and dementia.
DeCarli and Fornages landmark research is expected to answer these questions and lead to standards for assessing, diagnosing, and treating individuals with WML-related cognitive problems.
This grant gives us the chance to study WMLs from every angle and definitively understand their roles in age- and disease-related cognitive decline and risk for future dementia, DeCarli said. Its the culmination of our three decades of research that has given us great directions, but no final answers yet.
DeCarli and Fornage will conduct a study of patients with WMLs on their MRIs and concerns about cognitive symptoms, but no dementia diagnosis. It will be the first large study of a diverse population on the long-term effects of these lesions on thinking and dementia risk.
Beginning September 2021, study participants will be recruited at UC Davis Health and at least 10 other locations throughout the U.S. They will be from a variety of backgrounds, so the researchers can identify how WML outcomes differ by race, ethnicity, and sex, better representing those at risk for dementia.
Our ultimate goals are to develop a risk profile that identifies the likelihood of WML-related cognitive impairment and dementia over the course of five to 10 years and to identify clear targets for interventional trials, DeCarli said.
Resources to advance all dementia research
Another exciting part of the grant, according to the researchers, is the chance to fund additional studies aimed at refining diagnostic and predictive tools and methods for dementia. The outcomes will enhance dementia research and clinical care worldwide.
Data and samples from these studies will be shared with the wider research community via theNational Alzheimers Coordinating Center at the University of Washingtonand theNational Centralized Repository for Alzheimers Disease and Related Dementias at Indiana University. Images will be shared through theLaboratory of Neuro Imaging at the University of Southern California.
DeCarli and Fornage also participate in theMarkVCID Consortium, supported by the NIHsNational Institute of Neurological Disorders and Stroke. The consortium was established in 2016 to identify biological markers of vascular cognitive impairment and dementia.
This award is co-sponsored by the NIHs National Institute of Neurological Disorders and Stroke andNational Institute on Agingthrough grant 1U19NS120384.
The Brown Foundation Institute of Molecular Medicine (IMM) for the Prevention of Human Diseases is part of McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth). The IMM is focused on studying and preventing diseases at the genetic, cellular, and molecular levels using DNA and protein technologies and animal models. The IMM is part of the Texas Therapeutics Institute, a multi-institutional collaboration encouraging drug discovery. For more information, visitwww.uth.edu/imm/mission.htm.
The UC Davis Alzheimers Disease Research Center is one of only31 research centers designated and funded by the NIHs National Institute on Aging. The center's goal is to translate research advances into improved diagnosis and treatment for patients while focusing on the long-term goal of finding a way to prevent or cure Alzheimers disease and other dementias. The center also allows researchers to study the effects of the disease on a uniquely diverse population. For more information, visithealth.ucdavis.edu/alzheimers.
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