Adriana Mika1,2, Lukasz Kaska3, Monika Proczko-Stepaniak3, Agnieszka Chomiczewska1, Julian Swierczynski4,5, Ryszard T Smolenski4, Tomasz Sledzinski6. 1. Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Medical University of Gdansk, 1 Debinki, 80-211, Gdansk, Poland. 2. Department of Environmental Analysis, Faculty of Chemistry, University of Gdansk, 63 Wita Stwosza, 80-308, Gdansk, Poland. 3. Department of General, Endocrine and Transplant Surgery, Faculty of Medicine, Medical University of Gdansk, 17 Smoluchowskiego, 80-214, Gdansk, Poland. 4. Department of Biochemistry, Faculty of Medicine, Medical University of Gdansk, 1 Debinki, 80-211, Gdansk, Poland. 5. State School of Higher Vocational Education in Koszalin, 1 Lesna, 75-582, Koszalin, Poland. 6. Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Medical University of Gdansk, 1 Debinki, 80-211, Gdansk, Poland. tsledz@gumed.edu.pl.
Abstract
BACKGROUND: Bariatric surgery contributes to the improvement in glucose metabolism that may be related to a postoperative increase in serum bile acids (BAs). Three commonly used types of bariatric procedures, laparoscopic sleeve gastrectomy (LSG) (without creation of a bile loop), Roux-en-Y gastric bypass (RYGB), and omega-loop gastric bypass (OLGB) (with creation of shorter 100-150 cm and longer 200-280 cm bile loops, respectively), differ in their effects on glycemic control. The aim of the study was to compare the effects of various bariatric procedures on serum BA concentration and glucose homeostasis. METHODS: Serum BAs in 26 obese patients were determined by liquid chromatography-mass spectrometry prior to bariatric surgery, as well as 4 days and 3 months thereafter. RESULTS: Four days after the surgery, serum concentrations of BAs in LSG and OLGB groups were similar as prior to the procedure, and a slight decrease in serum BAs was observed in the RYGB group. Serum BA level in the LSG group remained unchanged also at 3 months after the surgery, whereas a significant 0.5- and 3-fold increase in this parameter was noted in the RYGB and OLGB groups, respectively. Serum concentration of BAs correlated positively with the length of the bile loop (R = 0.47, p < 0.05). CONCLUSION: The evident improvement of glycemic control observed 3 months after OLGB might be associated with a postoperative increase in serum BAs, resulting from their better absorption from the longer bile loop. However, the changes in serum BAs probably had little or no impact on insulin sensitivity improvement at 4 days post-surgery.
BACKGROUND: Bariatric surgery contributes to the improvement in glucose metabolism that may be related to a postoperative increase in serum bile acids (BAs). Three commonly used types of bariatric procedures, laparoscopic sleeve gastrectomy (LSG) (without creation of a bile loop), Roux-en-Y gastric bypass (RYGB), and omega-loop gastric bypass (OLGB) (with creation of shorter 100-150 cm and longer 200-280 cm bile loops, respectively), differ in their effects on glycemic control. The aim of the study was to compare the effects of various bariatric procedures on serum BA concentration and glucose homeostasis. METHODS: Serum BAs in 26 obesepatients were determined by liquid chromatography-mass spectrometry prior to bariatric surgery, as well as 4 days and 3 months thereafter. RESULTS: Four days after the surgery, serum concentrations of BAs in LSG and OLGB groups were similar as prior to the procedure, and a slight decrease in serum BAs was observed in the RYGB group. Serum BA level in the LSG group remained unchanged also at 3 months after the surgery, whereas a significant 0.5- and 3-fold increase in this parameter was noted in the RYGB and OLGB groups, respectively. Serum concentration of BAs correlated positively with the length of the bile loop (R = 0.47, p < 0.05). CONCLUSION: The evident improvement of glycemic control observed 3 months after OLGB might be associated with a postoperative increase in serum BAs, resulting from their better absorption from the longer bile loop. However, the changes in serum BAs probably had little or no impact on insulin sensitivity improvement at 4 days post-surgery.
Entities:
Keywords:
Bariatric surgery; Bile acids; Glucose metabolism; Liquid chromatography-mass spectrometry; Type 2 diabetes mellitus
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