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Serum biomarkers of inflammation and adiposity in the LABS cohort: associations with metabolic disease and surgical outcomes.

Citation
O'Rourke, R. W., et al. “Serum Biomarkers Of Inflammation And Adiposity In The Labs Cohort: Associations With Metabolic Disease And Surgical Outcomes.”. International Journal Of Obesity (2005), pp. 285-296.
Center University of Michigan University of Washington
Multicenter
Multicenter
Author Robert W O'Rourke, Geoffrey S Johnson, Jonathan Q Purnell, Anita P Courcoulas, Gregory F Dakin, Luis Garcia, Marcelo Hinojosa, James E Mitchell, Alfons Pomp, Walter J Pories, Konstantinos Spaniolas, David R Flum, Abdus S Wahed, Bruce M Wolfe
Abstract

BACKGROUND: The utility of serum biomarkers related to inflammation and adiposity as predictors of metabolic disease prevalence and outcomes after bariatric surgery are not well-defined.

METHODS: Associations between pre- and post-operative serum levels of four biomarkers (C-reactive protein (CRP), cystatin C (CC), leptin, and ghrelin) with baseline measures of adiposity and metabolic disease prevalence (asthma, diabetes, sleep apnea), and weight loss and metabolic disease remission after bariatric surgery were studied in the Longitudinal Assessment of Bariatric Surgery (LABS) cohort.

RESULTS: Baseline CRP levels were positively associated with the odds of asthma but not diabetes or sleep apnea; baseline CC levels were positively associated with asthma, diabetes, and sleep apnea; baseline leptin levels were positively associated with asthma and negatively associated with diabetes and sleep apnea; baseline ghrelin levels were negatively associated with diabetes and sleep apnea. Increased weight loss was associated with increased baseline levels of leptin and CRP and decreased baseline levels of CC. Remission of diabetes and asthma was not associated with baseline levels of any biomarker. A higher likelihood of asthma remission was associated with a greater decrease in leptin levels, and a higher likelihood of diabetes remission was predicted by a lesser decrease in CC. Bariatric surgery was associated with decreased post-operative CC, CRP, and leptin levels, and increased post-operative ghrelin levels.

CONCLUSION: This is the largest study to date of serum biomarkers of inflammation and adiposity in a bariatric surgery cohort. Biomarker levels correlate with metabolic disease prevalence prior to bariatric surgery, and with weight loss but not metabolic disease remission after surgery. Bariatric surgery regulates serum biomarker levels in a manner consistent with anti-inflammatory and compensatory orexigenic effects. These data contribute to our understanding of the mechanisms underlying the biologic effects of bariatric surgery.

Year of Publication
2019
Journal
International journal of obesity (2005)
Volume
43
Issue
2
Number of Pages
285-296
Date Published
12/2019
ISSN Number
1476-5497
DOI
10.1038/s41366-018-0088-z
Alternate Journal
Int J Obes (Lond)
PMID
29777230
PMCID
PMC6240401
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