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Dexmedetomidine Trial for Effects on Rhythms, Sleep Architecture, and Biomarker Dynamics in Older Adults

Massachusetts General Hospital · 2026
ClinicalTrials.gov · Datasets · License: Public Domain · 2026
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circadian-rhythmolder-adultssleep
The DEXTER study is a cross-over, double-blind, placebo-controlled pilot research study led by Dr. Peng Li. The goal of this project is to evaluate the safety, feasibility, and biological effects of a single dose of sublingual (under-the-tongue) dexmedetomidine (SL Dex) in older adults. Specifically, researchers want to see how this medication affects sleep patterns, internal 24-hour circadian rhythms, and the daily cycles of certain neurological proteins (specifically plasma p-tau217) associated with brain aging.
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