Abstract
Scarce data exists about serum enzyme in bariatric patients. We attempted to evaluate serum enzyme status in patients receiving Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) and to identify related predictors. We retrospectively reviewed the patients receiving RYGB and SG in our center from January 2013 to January 2018. Anthropometric data and serum enzyme data were collected preoperatively and 6 and 12months postoperatively. Five hundred patients (201 RYGB, 299 SG) were included. Serum enzyme abnormalities were common preoperatively, with 50.8% for elevated alanine aminotransferase (ALT), 33.0% for elevated aspartate aminotransferase (AST), 36.6% for elevated γ-glutamyltranspeptidase (γ-GT), 17.6% for elevated creatine kinase (CK), 15.2% for elevated lactic dehydrogenase (LDH), 9.0% for elevated adenosine deaminase (ADA), 6.2% for elevated hydroxybutyrate dehydrogenase (HBDH), and 8.4% for decreased superoxide dismutase (SOD). After RYGB and SG, the prevalence of serum ALT, AST, γ-GT, LDH, and HBDH abnormalities reduced. The levels of ALT, AST, γ-GT, ADA, cholinesterase (CHE), LDH, CK, and HBDH reduced significantly, while amylase and SOD levels increased. Age and preoperative γ-GT level were independent predictors of ALT, AST, γ-GT, and LDH change 1year postoperatively. Preoperative ALT, AST, ALP, LDH, and HBDH levels could predict postoperative change, respectively. Gender and surgical procedure could predict postoperative ALP change. Serum enzyme abnormalities are common in bariatric surgery candidates, with reduced prevalence of abnormalities postoperatively. RYGB and SG are related with reduced ALT, AST, γ-GT, ADA, CHE, LDH, CK, and HBDH levels, as well as increased amylase and SOD levels.
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