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Open Access Original investigation

Omentin changes following bariatric surgery and predictive links with biomarkers for risk of cardiovascular disease

Marc Lapointe1, Paul Poirier12, Julie Martin12, Marjorie Bastien12, Audrey Auclair12 and Katherine Cianflone13*

Author Affiliations

1 Centre de Recherche de l’Institut Universitaire de Cardiologie & Pneumologie de Québec, Université Laval, Y4332, 2725 Chemin Ste-Foy, Québec G1V 4G5, QC, Canada

2 Faculté de Pharmacie, Université Laval, Québec, Canada

3 Faculté de Médecine, Université Laval, Québec, Canada

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Cardiovascular Diabetology 2014, 13:124  doi:10.1186/s12933-014-0124-9

Published: 21 August 2014

Abstract

Background

Although no receptor has yet been identified, changes in circulating levels of the adipokine designated as Omentin have been demonstrated in obesity and related comorbidities such as cardiovascular disease, insulin resistance, metabolic syndrome and chronic inflammation.

Methods

Changes in Omentin levels at 1 and 5 days and 6 and 12 months in response to biliopancreatic diversion with duodenal switch bariatric surgery were evaluated, specifically to investigate if changes preceded gain of insulin sensitivity.

Results

Pre-operative plasma Omentin was not different between men (n = 18) vs women (n = 48), or diabetic status but correlated with body mass index (BMI). Altogether, Omentin increased as early as 24-h post-surgery, with changes maintained up to 1-year. Fifty-nine percent of subjects increased Omentin >10% by 24-H following surgery (OmentinINC p < 0.0001), while 18% of subjects decreased (OmentinDEC p < 0.0001), with changes maintained throughout one-year. These two groups had comparable age, sex distribution, diabetes, BMI, waist circumference and fat mass, however OmentinDEC had elevated levels of cardiovascular risk markers; homocysteine (p = 0.019), NT-proBNP (p = 0.006) and total bilirubin (p = 0.0001) while red blood cell (RBC) count was lower (p = 0.0005) over the one-year period. Omentin levels at 1-DAY also correlated with immune parameters (white blood cell count, % neutrophil, % monocytes, % lymphocytes).

Conclusion

OmentinDEC at 1 day following surgery may be a marker of cardiovascular “at-risk” group before weight loss or insulin sensitivity restoration.

Keywords:
Obesity; Weight loss; NT-proBNP