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Obesity Surgery

, Volume 19, Issue 3, pp 321–326 | Cite as

Decrease in Serum Protein Carbonyl Groups Concentration and Maintained Hyperhomocysteinemia in Patients Undergoing Bariatric Surgery

  • T. Sledzinski
  • E. Goyke
  • R. T. Smolenski
  • Z. Sledzinski
  • J. SwierczynskiEmail author
Research Article

Abstract

Background

Human obesity is associated with oxidative stress but the factors contributing to the increase of reactive oxygen species (ROS) production remain unknown. We evaluated the association between serum homocysteine concentration, which may increase ROS production, and serum protein carbonyl groups concentration before and after bariatric surgery.

Methods

Serum protein carbonyl groups and serum homocysteine concentrations, as well as obesity markers, were compared in 18 obese patients before and 6 months after bariatric surgery. Ten healthy individuals with normal body mass index (BMI) served as controls.

Results

Before bariatric surgery, obese patients displayed approximately 50% higher serum protein carbonyl groups concentration than control subjects. After surgery, serum protein carbonyl groups concentration decreased and matched values observed in controls. Serum homocysteine concentration was also elevated in obese patients, but in contrast to protein carbonyl groups, did not change after surgery. The body weight, BMI, HOMA-IR, serum leptin, triacylglycerols, LDL/HLD cholesterol ratio, insulin, and glucose concentrations were higher in obese patients as compared to controls, and decreased after bariatric surgery.

Conclusions

This study demonstrates that bariatric surgery has protective effect on oxidative protein damage and improves several laboratory parameters including serum lipid concentration and insulin resistance. However, bariatric surgery does not cause a decrease in serum homocysteine concentration, a risk factor for the development of cardiovascular diseases. Collectively, the results presented in this paper suggest that serum homocysteine concentration is not directly associated with oxidative stress in obese patients after bariatric surgery.

Keywords

Oxidative stress Homocysteine Protein carbonyl groups Obesity Bariatric surgery 

Notes

Acknowledgements

We are indebted to Marcin Lipinski for assistance in the homocysteine determination and Professor M.M. Zydowo, Professor L. Zelewski and Dr. Anna Nogalska for critical reading of this manuscript. This work was supported by a grant from the Ministry of Science and Higher Education (Badania Statutowe St-41).

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Copyright information

© Springer Science + Business Media, LLC 2008

Authors and Affiliations

  • T. Sledzinski
    • 1
  • E. Goyke
    • 2
  • R. T. Smolenski
    • 2
  • Z. Sledzinski
    • 3
  • J. Swierczynski
    • 2
    Email author
  1. 1.Department of Pharmaceutical BiochemistryMedical University of GdanskGdanskPoland
  2. 2.Department of BiochemistryMedical University of GdanskGdanskPoland
  3. 3.Department of General, Endocrine and Transplant SurgeryMedical University of GdanskGdanskPoland

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