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Obesity Surgery
Published in: Obesity Surgery 9/2011

01-09-2011 | Clinical Research

Sleep Apnea Determines Soluble TNF-α Receptor 2 Response to Massive Weight Loss

Authors: Maria Pallayova, Kimberley E. Steele, Thomas H. Magnuson, Michael A. Schweitzer, Philip L. Smith, Susheel P. Patil, Shannon Bevans-Fonti, Vsevolod Y. Polotsky, Alan R. Schwartz

Published in: Obesity Surgery | Issue 9/2011

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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/m2/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.
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Metadata
Title
Sleep Apnea Determines Soluble TNF-α Receptor 2 Response to Massive Weight Loss
Authors
Maria Pallayova
Kimberley E. Steele
Thomas H. Magnuson
Michael A. Schweitzer
Philip L. Smith
Susheel P. Patil
Shannon Bevans-Fonti
Vsevolod Y. Polotsky
Alan R. Schwartz
Publication date
01-09-2011
Publisher
Springer-Verlag
Published in
Obesity Surgery / Issue 9/2011
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI
https://doi.org/10.1007/s11695-011-0359-4

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