Effect of Sleeve Gastrectomy Versus One Anastomosis Gastric Bypass on Postoperative Renal Function and the Urinary Monocyte Chemoattractant Protein-1 (MCP-1) Level

Introduction Bariatric surgery has been the most effective treatment modality for morbid obesity that reduces associated comorbidities and improves quality of life. This study aims at evaluating and comparing the impact of two types of bariatric surgery-laparoscopic sleeve gastrectomy (LSG) and one anastomosis gastric bypass (OAGB)-on renal functions and urinary monocyte chemoattractant protein-1 (MPC-1) levels in morbidly obese patients 3 months after surgery.Methods This is a prospective study of 40 morbidly obese patients who underwent bariatric surgery. Two types of bariatric surgery were done-laparoscopic sleeve gastrectomy (LSG) (26 patients) and laparoscopic one anastomosis gastric bypass (OAGB) (14 patients). The outcomes of the two procedures were compared in terms of renal function parameters and the level of urinary MCP-1.Results There were no statistically significant differences in the mean postoperative urinary MCP-1 (73.53 +/- 21.25, 75.43 +/- 26.17, P > 0.5), microalbuminuria (8.83 +/- 6.26, 10.02 +/- 8.6, P > 0.05), urinary creatinine (109.21 +/- 43.22, 99.19 +/- 48.65, P > 0.05), MCP1/Cr ratio (0.78 +/- 0.36, 1.01 +/- 0.70, P > 0.05), eGFR (100.32 +/- 9.54, 104.39 +/- 9.54, P > 0.05) in the cases who had either LSG operation or OAGB operation.Conclusion Bariatric surgery improves all indicators of kidney malfunction and reduces the level of urinary MCP-1. Both laparoscopic sleeve gastrectomy (LSG) and laparoscopic one anastomosis gastric bypass (OAGB) cause similar improvement of the renal function and reduction of urinary MCP-1 level.