期刊
SLEEP AND BREATHING
卷 13, 期 4, 页码 415-420出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11325-009-0268-0
关键词
Obstructive sleep apnea; C-reactive protein; Diurnal variability
资金
- NIH [HL073355, HL44915, HL36005, CA23100]
Objective The objective of this study is to examine the diurnal variability of C-reactive protein (CRP) in obstructive sleep apnea (OSA). Methods and measurements Participants included 44 women and men with untreated OSA (mean apnea/hypopnea index-37.5, SD+/-28) and 23 healthy adults with no OSA. Sleep was monitored with polysomnography in the University of California San Diego General Clinical Research Center. Over a 24-h period, blood was collected every 2 h, and CRP levels were determined. Results Adjusting for age, gender, and body mass index, a significant group by time interaction showed that patients with OSA had higher CRP levels during the daytime (8:00 a.m.-8:00 p.m.) versus the nighttime (10:00 p.m. until 6:00 p.m.; p<0.001). Non-apneics showed no significant change in CRP levels during the 24 h. Conclusions The findings indicate that sleep apnea patients have disproportionately elevated CRP levels in the day versus the nighttime, possibly as a result of carryover effects of nighttime arousal into the daytime.
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