The purpose of this study is to better understand how sleep apnea contributes to the development of diabetes.
Substantial evidence indicates that obstructive sleep apnea (OSA) is associated with impaired glucose metabolism, however, metabolic mechanisms underlying this association remain unclear. This mechanistic study will determine systemic and cellular metabolic pathways that contribute to impaired glucose metabolism in obstructive sleep apnea (OSA). Understanding of how obstructive sleep apnea (OSA) affects glucose metabolism may help identify novel targets for risk prediction and/or treatment of metabolic impairments beyond continuous positive airway pressure (CPAP). Obstructive sleep apnea (OSA) patients with prediabetes will be studied under three in-laboratory conditions in a randomized cross-over design: untreated condition (obstructive sleep apnea), treated condition (continuous positive airway pressure), untreated but pharmacologically suppressed lipolysis condition (Niacin). The investigator will perform whole body and cellular assessments under each study condition.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
300
Continuous positive airway pressure (CPAP) treatment of obstructive sleep apnea (OSA)
Suppression of lipolysis by niacin infusion
University of Chicago
Chicago, Illinois, United States
Plasma norepinephrine levels
Plasma norepinephrine will be measured in blood
Time frame: Untreated, within 4 months of screening
Plasma norepinephrine levels
Plasma norepinephrine will be measured in blood
Time frame: CPAP, within 4 months of screening
Plasma norepinephrine levels
Plasma norepinephrine will be measured in blood
Time frame: Niacin, within 4 months of screening
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