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Exploring language as an early behavioral marker of Alzheimer's Disease

Dec 12, 2024

3 min

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Professors from the University of Delaware and Carnegie Mellon University will use a $3.7 million RF1 grant from the National Institute on Aging (NIA) to examine language as an early behavioral marker of Alzheimer’s Disease. If successful, this research could pave the way for earlier interventions.


“Identifying these individuals as early as possible gets them into preventive treatments sooner,” said Alyssa Lanzi, assistant professor of Communications Sciences & Disorders at UD.


The study builds on pilot data gathered by Anna Saylor, a third-year doctoral student in the communication sciences and disorders doctoral program, housed in the UD's College of Health Sciences.


“We know a lot about how language develops in childhood but not much about how it changes in older adults,” Saylor said. “Our data suggest subtle language changes might signal future cognitive decline.”


To explore these changes on a larger scale, Lanzi is collaborating with MacWhinney, who founded TalkBank, open science database of language samples. Within TalkBank is DementiaBank, a shared database of multimedia interactions for studying communication in dementia. However, DementiaBank is outdated and limited in demographics, and the quality and rigor of the data need improvement.


Lanzi is seeking to change that. Her five-year study seeks 300 older adults aged 60-90 nationwide from underrepresented backgrounds or populations vulnerable to health disparities.


“Current DementiaBank data is representative of Caucasians of a higher socioeconomic status,” Lanzi said. “We must intentionally recruit people who are at the greatest risk — for example, adults who are Black, Asian, Hispanic, Latin and those living in rural areas.”


The recruitment strategy, rooted in community engagement at locations in Wilmington, Delaware, is part of the novelty of Lanzi’s grant.


“This is a feasibility study to see if our approach in Wilmington can be replicated in other states,” Lanzi said.


Lanzi has also established an advisory committee of nationwide faculty with relevant expertise on specific priority populations. Their input will tailor plans to population needs while data is collected through a central site at UD.


The Delaware Center for Cognitive Aging Research (DECCAR) also provides critical infrastructure for the study.


“This project is an example of the success of DECCAR, and our impact extends far beyond state lines,” said Lanzi, an executive committee member with DECCAR.


Participants selected for the study will participate in a comprehensive cognitive and language testing battery via telehealth, so they don’t have to travel to UD’s campus, which is novel and unique to this study.


“To study their language, they’ll see pictures and be asked to describe them and share stories from their past,” Lanzi said.


Study participants will receive a gift card for participating and feedback about their memory to share with their healthcare provider.


“Building trust and giving back are key elements of our strategy,” Lanzi said.


Lanzi is already preparing for the next phase of her research, supported by an additional $800,000 grant from the NIA. This phase will test the effects of an online treatment Lanzi developed for individuals identified as at risk.


“If we find that language is an early marker of disease, I want to take this research to the next level and develop treatments that teach strategies to enhance independence and improve the quality of life for those at risk of developing dementia,” she said.

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