Abstract

The overall goal of this study is to evaluate mechanisms leading to insomnia in the elderly. This is a common complaint in this age group. About 10% of elderly have long-lasting frequent insomnia (difficulty sleeping). Our study is directed at investigating underlying mechanisms. We will employ a case-control study. Specifically we will recruit elderly subjects with long-lasting insomnia (cases) and subjects with no or rare insomnia in the previous one year (controls). The fundamental hypothesis on which our study is based is that age-related changes in the sleep and circadian processes are major risk factors for insomnia and compound the effects of sleep disorders and somatic diseases that interrupt sleep.
Our specific aims are the following: 1. Determine the relative role of physiological changes with age (phase advance of the circadian clock, reduced melatonin levels, decrease in EEG slow wave activity) in causation of insomnia. 2. Determine whether sleep disorders (sleep apnea and nocturnal myoclonus) are risk factors for insomnia in the elderly. 3. Determine whether physiological changes in homeostatic sleep drive and/or the circadian system augment the effects of sleep or somatic disorders that interrupt sleep in the elderly.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
5M01RR000040-40
Application #
6303294
Study Section
Project Start
1999-12-01
Project End
2000-11-30
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
40
Fiscal Year
2000
Total Cost
$25,114
Indirect Cost

  Institution

Name
University of Pennsylvania
Department
Type
DUNS #
042250712
City
Philadelphia
State
PA
Country
United States
Zip Code
19104

  Publications

Khalili, Mandana; Shuhart, Margaret C; Lombardero, Manuel et al. (2018) Relationship Between Metabolic Syndrome, Alanine Aminotransferase Levels, and Liver Disease Severity in a Multiethnic North American Cohort With Chronic Hepatitis B. Diabetes Care 41:1251-1259
Thomas, Bernadette; Matsushita, Kunihiro; Abate, Kalkidan Hassen et al. (2017) Global Cardiovascular and Renal Outcomes of Reduced GFR. J Am Soc Nephrol 28:2167-2179
Ojiro, Keisuke; Qu, Xiaowang; Cho, Hyosun et al. (2017) Modulation of Hepatitis C Virus-Specific CD8 Effector T-Cell Function with Antiviral Effect in Infectious Hepatitis C Virus Coculture Model. J Virol 91:
Di Bisceglie, A M; Lombardero, M; Teckman, J et al. (2017) Determination of hepatitis B phenotype using biochemical and serological markers. J Viral Hepat 24:320-329
Lok, A S; Ganova-Raeva, L; Cloonan, Y et al. (2017) Prevalence of hepatitis B antiviral drug resistance variants in North American patients with chronic hepatitis B not receiving antiviral treatment. J Viral Hepat 24:1032-1042
Leonard, Mary B; Shults, Justine; Long, Jin et al. (2016) Effect of Low-Magnitude Mechanical Stimuli on Bone Density and Structure in Pediatric Crohn's Disease: A Randomized Placebo-Controlled Trial. J Bone Miner Res 31:1177-88
Ricordi, Camillo; Goldstein, Julia S; Balamurugan, A N et al. (2016) National Institutes of Health-Sponsored Clinical Islet Transplantation Consortium Phase 3 Trial: Manufacture of a Complex Cellular Product at Eight Processing Facilities. Diabetes 65:3418-3428
Evon, Donna M; Wahed, Abdus S; Johnson, Geoffrey et al. (2016) Fatigue in Patients with Chronic Hepatitis B Living in North America: Results from the Hepatitis B Research Network (HBRN). Dig Dis Sci 61:1186-96
Park, Jang-June; Wong, David K; Wahed, Abdus S et al. (2016) Hepatitis B Virus--Specific and Global T-Cell Dysfunction in Chronic Hepatitis B. Gastroenterology 150:684-695.e5
Hering, Bernhard J; Clarke, William R; Bridges, Nancy D et al. (2016) Phase 3 Trial of Transplantation of Human Islets in Type 1 Diabetes Complicated by Severe Hypoglycemia. Diabetes Care 39:1230-40

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