Abstract：
BACKGROUND:The effects of surgical weight loss (WL) on inflammatory biomarkers associated with sleep apnea remain unknown. We sought to determine if any biomarkers can predict amelioration of sleep apnea achieved by bariatric surgery. We hypothesized that surgical WL would substantially reduce severity of sleep apnea and levels of proinflammatory cytokines. METHODS:Twenty-three morbidly obese adults underwent anthropometric measurements, polysomnography, and serum biomarker profiling prior to and 1 year following bariatric surgery. We examined the effect of WL and amelioration of sleep apnea on metabolic and inflammatory markers. RESULTS:Surgical WL resulted in significant decreases in BMI (16.7 ± 5.97 kg/m(2)/median 365 days), apnea-hypopnea index (AHI), CRP, IL-6, sTNFαR1, sTNFαR2, and leptin levels, while ghrelin, adiponectin, and soluble leptin receptor concentrations increased significantly. Utilizing an AHI cutoff of 15 events/h, we found significantly elevated levels of baseline sTNFαR2 and greater post-WL sTNFαR2 decreases in subjects with baseline AHI ≥15 events/h compared to those with AHI <15 events/h despite no significant differences in baseline BMI, age, and ΔBMI. In a multivariable linear regression model adjusting for sex, age, impaired glucose metabolism, ΔBMI, and follow-up period, the post-WL decreases in AHI were an independent predictor of the decreases in sTNFαR2 and altogether accounted for 46% of the variance of ΔsTNFαR2 (P = 0.011) in the entire cohort. CONCLUSIONS:Of all the biomarkers, the decrease in sTNFαR2 was independently determined by the amelioration of sleep apnea achieved by bariatric surgery. The results suggest that sTNFαR2 may be a specific sleep apnea biomarker across a wide range of body weight.
journal_name
Obes Surgjournal_title
Obesity surgeryauthors
Pallayova M,Steele KE,Magnuson TH,Schweitzer MA,Smith PL,Patil SP,Bevans-Fonti S,Polotsky VY,Schwartz ARdoi
10.1007/s11695-011-0359-4subject
Has Abstractpub_date
2011-09-01 00:00:00pages
1413-23issue
9eissn
0960-8923issn
1708-0428journal_volume
21pub_type
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