Circadian organization of behavior and physiology is often challenged by individual choices, social/societal pressures and pathology, leading to circadian misalignment, sleep deficiency and ultimately, adverse health outcomes. Just in the past decade, advances in the scientific knowledge of circadian biology in animal model systems, as well as in humans, coupled with the evidence of circadian disruption with aging, indicate the transformative potential of circadian based strategies for maximizing healthy aging. In this Program Project application, we propose to seize this opportunity by capitalizing on our history of successful collaborations and collective and complementary expertise and experience, as well as in circadian biology, aging and clinical research to advance our understanding of the interaction between centrally regulated circadian rhythms, sleep and peripheral tissue clocks in cardiometabolic aging. Our mechanistic approach will be complemented by interventions that increase circadian synchrony to improve cardio-metabolic health in middle age and older adults. Our multi-disciplinary and multi-institutional (Northwestern and U of Chicago) approach combines novel translational, clinical (Projects 1 & 2) and basic (Project 3) studies and is uniquely poised to achieve the scientific aims of each of the three projects. Specifically, the Program will define the role and mechanisms of interplay between central and peripheral clocks in aging and dissect the contribution of age-related changes in the circadian clock system, as measured by amplitude and phase alignment, in cardiometabolic aging. Project #1 (Zee, PI) has as its primary aim to develop translatable circadian based interventions to enhance synchronization of central and peripheral rhythms through increased amplitude, and ultimately to improve cardio- metabolic function and sleep quality in older adults. Project #2 (Van Cauter and Knutson, PIs) focuses on the impact of dietary alignment of peripheral oscillators on cardio-metabolic risk, sleep quality and the overall synchronization of the circadian system. Project #3 (Bass and Turek, PIs) will use mouse models to test circadian phase-restricted feeding as a life- and health-span extending intervention and explore molecular, physiological, and behavioral mechanisms by which phase-restricted feeding may enhance circadian robustness, metabolic function, and sleep. These projects are thematically unified by the overall Program focus on the role of aging on central and peripheral clock interactions in the regulation of cardiometabolic function at the molecular, cellular and physiological levels, and the three projects will be supported by the innovative metabolic measures and analyses proposed in the Cores. In addition, the rich, molecular data and extensive and novel physiological/metabolic data (from mice and humans) will be used to explore common mechanistic hypotheses across the entire program in order to greatly enhance our understanding of the importance of chronobiology-sleep-metabolism concepts for successful aging.
The current rapid growth of the aged population and of the prevalence of age-related chronic disorders, such as diabetes and cardiovascular disease, coupled with advances in the scientific knowledge of circadian biology and the evidence of circadian disruption with aging, indicate the transformative potential of circadian based strategies for maximizing healthy aging. In this Program Project application, we propose to build on this growing knowledge and on our history of successful collaborations with collective and complementary expertise and experience in circadian biology, aging and clinical research to advance our understanding of the interaction between centrally regulated circadian rhythms, sleep and peripheral tissue clocks in cardiometabolic aging and to translate these findings to interventions to enhance circadian rhythmicity, and thus improve sleep and cardiometabolic health of older adults.
|Baron, Kelly Glazer; Reid, Kathryn J; Malkani, Roneil G et al. (2017) Sleep Variability Among Older Adults With Insomnia: Associations With Sleep Quality and Cardiometabolic Disease Risk. Behav Sleep Med 15:144-157|
|Peek, Clara Bien; Levine, Daniel C; Cedernaes, Jonathan et al. (2017) Circadian Clock Interaction with HIF1? Mediates Oxygenic Metabolism and Anaerobic Glycolysis in Skeletal Muscle. Cell Metab 25:86-92|
|Mokhlesi, Babak; Grimaldi, Daniela; Beccuti, Guglielmo et al. (2017) Effect of one week of CPAP treatment of obstructive sleep apnoea on 24-hour profiles of glucose, insulin and counter-regulatory hormones in type 2 diabetes. Diabetes Obes Metab 19:452-456|
|Bass, Joseph T (2017) The circadian clock system's influence in health and disease. Genome Med 9:94|
|Fan, Emily P; Abbott, Sabra M; Reid, Kathryn J et al. (2017) Abnormal environmental light exposure in the intensive care environment. J Crit Care 40:11-14|
|Santostasi, Giovanni; Malkani, Roneil; Riedner, Brady et al. (2016) Phase-locked loop for precisely timed acoustic stimulation during sleep. J Neurosci Methods 259:101-114|
|Broussard, Josiane L; Wroblewski, Kristen; Kilkus, Jennifer M et al. (2016) Two Nights of Recovery Sleep Reverses the Effects of Short-term Sleep Restriction on Diabetes Risk. Diabetes Care 39:e40-1|
|Grimaldi, Daniela; Carter, Jason R; Van Cauter, Eve et al. (2016) Adverse Impact of Sleep Restriction and Circadian Misalignment on Autonomic Function in Healthy Young Adults. Hypertension 68:243-50|
|Mokhlesi, Babak; Grimaldi, Daniela; Beccuti, Guglielmo et al. (2016) Effect of One Week of 8-Hour Nightly Continuous Positive Airway Pressure Treatment of Obstructive Sleep Apnea on Glycemic Control in Type 2 Diabetes: A Proof-of-Concept Study. Am J Respir Crit Care Med 194:516-9|
|Broussard, Josiane L; Kilkus, Jennifer M; Delebecque, Fanny et al. (2016) Elevated ghrelin predicts food intake during experimental sleep restriction. Obesity (Silver Spring) 24:132-8|
Showing the most recent 10 out of 199 publications