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Updated: May 12, 2025
FIBS-enabled Noninvasive Metabolic Profiling
Published on: February 3, 2014
Exploring post-bariatric plasma metabolic changes using ATR-FTIR spectroscopy: Clinical insights and molecular
Jan Bylica1, Karolina Chrabąszcz2, Piotr Major3
1Department of Internal Medicine and Gerontology, Jagiellonian University Medical College, Kraków, Poland; Doctoral School of Medical and Health Sciences, Jagiellonian University Medical College, Kraków, Poland; Department of Rheumatology, Immunology and Internal Medicine, University Hospital in Krakow, Poland.
Bariatric surgery significantly improves metabolic profiles, shifting plasma composition towards healthy levels. Attenuated Total Reflection Fourier Transform Infrared spectroscopy (ATR-FTIR) reveals key biochemical changes in lipids and proteins post-surgery.
Area of Science:
- Biochemistry
- Spectroscopy
- Metabolic Health
Background:
- Obesity is a complex metabolic disorder requiring effective treatment.
- Bariatric surgery is a primary intervention for morbid obesity.
- The comprehensive metabolic response to bariatric surgery requires further elucidation.
Purpose of the Study:
- To monitor plasma metabolic profile changes after bariatric surgery using ATR-FTIR spectroscopy.
- To compare the metabolic profiles of post-bariatric surgery patients with healthy individuals.
- To identify specific molecular alterations indicative of metabolic improvements.
Main Methods:
- Utilized Attenuated Total Reflection Fourier Transform Infrared (ATR-FTIR) spectroscopy.
- Analyzed plasma samples from 20 morbidly obese patients before and after bariatric surgery.
- Employed Principal Component Analysis (PCA) for spectral data analysis and semiquantitative band analysis.
Main Results:
- Bariatric surgery led to favorable changes in anthropometric parameters and laboratory biomarkers (triglycerides, glucose).
- ATR-FTIR and PCA demonstrated a shift in plasma metabolic profiles towards those of healthy individuals.
- Obesity was associated with increased lipid contributions and lower tyrosine levels, while post-surgery showed altered protein structures and elevated C-O moieties and polysaccharides.
Conclusions:
- ATR-FTIR spectroscopy is a powerful tool for assessing the impact of bariatric surgery on plasma metabolic profiles.
- Significant improvements in metabolic profiles, including lipid and protein composition, are evident six months post-surgery.
- Observed molecular changes suggest reduced oxidative stress and potential influence of inflammation resolution and supplementation.
