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      Sleep Duration and Chronic Kidney Disease: Analysis of the National Health Interview Survey

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          Abstract

          Background: Patients with chronic kidney disease (CKD) have a high prevalence of sleep disorders. The association between sleep duration and self-reported CKD was examined in a population of Americans who participated in a national survey over a 3-year period. Study Design: A cross-sectional study using survey data from theNational Health Interview Survey (NHIS) from the year 2004-2006 was carried out. A retrospective examination of data from acommunity-based survey of 128,486 noninstitutionalized US civilian residents over the age of 18 years was conducted. Self-reportedCKD was defined as having ‘weak or failing kidneys'. The sleep duration was defined by a self-reported estimate of habitual sleep duration. Results: The prevalence of participants self-reporting kidney disease was higher in those with short (≤6 h per night) and long (≥8 h per night) sleep durations when compared to those sleeping 7 h per night. Self-reported information about sleep, demographic information, and information on comorbidities were assessed using standardized validated questionnaires which reported no kidney disease. A multivariate logistic regression analysis showed increased odds of self-reported kidney disease in study participants with both short and long sleep durations compared to healthy sleepers (sleeping >7-8 h per night). Observational data do not permit examination of causality, although possible confounders in observations of interest can be adjusted. Conclusion: AmongAmericans surveyed in the NHIS (2004-2006), those with short or long sleep duration had higher odds of reporting that they had CKD. i 2014 S. Karger AG, Basel

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          Most cited references26

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          Mortality associated with sleep duration and insomnia.

          Patients often complain about insufficient sleep or chronic insomnia in the belief that they need 8 hours of sleep. Treatment strategies may be guided by what sleep durations predict optimal survival and whether insomnia might signal mortality risks. In 1982, the Cancer Prevention Study II of the American Cancer Society asked participants about their sleep duration and frequency of insomnia. Cox proportional hazards survival models were computed to determine whether sleep duration or frequency of insomnia was associated with excess mortality up to 1988, controlling simultaneously for demographics, habits, health factors, and use of various medications. Participants were more than 1.1 million men and women from 30 to 102 years of age. The best survival was found among those who slept 7 hours per night. Participants who reported sleeping 8 hours or more experienced significantly increased mortality hazard, as did those who slept 6 hours or less. The increased risk exceeded 15% for those reporting more than 8.5 hours sleep or less than 3.5 or 4.5 hours. In contrast, reports of "insomnia" were not associated with excess mortality hazard. As previously described, prescription sleeping pill use was associated with significantly increased mortality after control for reported sleep durations and insomnia. Patients can be reassured that short sleep and insomnia seem associated with little risk distinct from comorbidities. Slight risks associated with 8 or more hours of sleep and sleeping pill use need further study. Causality is unproven.
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            Effect of sleep loss on C-reactive protein, an inflammatory marker of cardiovascular risk.

            We sought to investigate the effects of sleep loss on high-sensitivity C-reactive protein (CRP) levels. Concentrations of high-sensitivity CRP are predictive of future cardiovascular morbidity. In epidemiologic studies, short sleep duration and sleep complaints have also been associated with increased cardiovascular morbidity. Two studies were undertaken to examine the effect of acute total and short-term partial sleep deprivation on concentrations of high-sensitivity CRP in healthy human subjects. In Experiment 1, 10 healthy adult subjects stayed awake for 88 continuous hours. Samples of high-sensitivity CRP were collected every 90 min for 5 consecutive days, encompassing the vigil. In Experiment 2, 10 subjects were randomly assigned to either 8.2 h (control) or 4.2 h (partial sleep deprivation) of nighttime sleep for 10 consecutive days. Hourly samples of high-sensitivity CRP were taken during a baseline night and on day 10 of the study protocol. The CRP concentrations increased during both total and partial sleep deprivation conditions, but remained stable in the control condition. Systolic blood pressure increased across deprivation in Experiment 1, and heart rate increased in Experiment 2. Both acute total and short-term partial sleep deprivation resulted in elevated high-sensitivity CRP concentrations, a stable marker of inflammation that has been shown to be predictive of cardiovascular morbidity. We propose that sleep loss may be one of the ways that inflammatory processes are activated and contribute to the association of sleep complaints, short sleep duration, and cardiovascular morbidity observed in epidemiologic surveys.
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              Adverse effects of modest sleep restriction on sleepiness, performance, and inflammatory cytokines.

              Total sleep restriction in humans is associated with increased daytime sleepiness, decreased performance, and hormonal/metabolic disturbances. The effects of mild chronic sleep restriction that mimic real life are not known. To assess the effects of modest sleep restriction from 8 to 6 h/night for 1 wk, 25 young, healthy, normal sleepers (12 men and 13 women) were studied for 12 consecutive nights in the sleep laboratory. After 1 wk of sleep restriction, although subjects' nighttime sleep was deeper, subjects were significantly sleepier (multiple sleep latency test) and performed worse in four primary variables of psychomotor vigilance test (both P < 0.01). Furthermore, 24-h secretion of IL-6 was increased by 0.8 +/- 0.3 pg/ml (P < 0.05) in both sexes, whereas TNFalpha was increased only in men. Also, the peak cortisol secretion was lower after sleep restriction than at baseline, and this difference was stronger in men (55.18 +/- 24.83 nmol/liter; P < 0.05) than in women (35.87 +/- 24.83 nmol/liter; P < 0.16). We conclude that in young men and women, modest sleep loss is associated with significant sleepiness, impairment of psychomotor performance, and increased secretion of proinflammatory cytokines. Given the potential association of these behavioral and physical alterations with health, well-being, and public safety, the idea that sleep or parts of it are optional should be regarded with caution.
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                Author and article information

                Journal
                CRM
                Cardiorenal Med
                10.1159/issn.1664-5502
                Cardiorenal Medicine
                S. Karger AG
                1664-3828
                1664-5502
                2014
                December 2014
                17 October 2014
                : 4
                : 3-4
                : 210-216
                Affiliations
                aCenter for Healthful Behavior Change, NYU School of Medicine, New York, N.Y., bDepartment of Obstetrics and Gynecology, Lutheran Medical Center, and Departments of cMedicine and dEndocrinology, SUNY Downstate Medical Center, Brooklyn, N.Y., USA
                Author notes
                *Girardin Jean-Louis, PhD, Professor of Population Health and Psychiatry, Center for Healthful Behavior Change, Department of Population Health, New York University School of Medicine, 227 East 30th St., 6th Floor, New York, NY 10016 (USA), E-Mail Girardin.Jean-Louis@nyumc.org
                Article
                368205 PMC4299261 Cardiorenal Med 2014;4:210-216
                10.1159/000368205
                PMC4299261
                25737685
                6d83f922-8463-47b6-95a5-e592fbee52b5
                © 2014 S. Karger AG, Basel

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                History
                : 02 July 2014
                : 27 August 2014
                Page count
                Figures: 1, Tables: 1, Pages: 7
                Categories
                Original Paper

                Cardiovascular Medicine,Nephrology
                Chronic kidney disease,Race/ethnicity,Sleep duration
                Cardiovascular Medicine, Nephrology
                Chronic kidney disease, Race/ethnicity, Sleep duration

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