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Duodenal-Jejunal Bypass Surgery in Diet-Induced Obese Diabetic Mice

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Does bariatric surgery really prevent deterioration of renal function?

Eun Young Kim¹, Yong Jin Kim²

¹Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea.

Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery

|January 30, 2016

Summary

Bariatric surgery significantly improves kidney function in obese patients, reducing microalbuminuria and protein levels. This procedure may help prevent further renal impairment progression.

Keywords:

Bariatric surgery Estimated glomerular filtration rate Renal function Urinary albumin-to-creatinine ratio Urinary protein-to-creatinine ratio

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Area of Science:

Nephrology
Bariatric Surgery
Metabolic Health

Background:

Obesity is a significant risk factor for impaired renal function.
Bariatric surgery has been linked to improvements in kidney health.

Purpose of the Study:

To investigate obesity-related changes in renal function following bariatric surgery.
To identify clinical factors associated with these renal function changes.

Main Methods:

A cohort of 136 obese patients undergoing bariatric surgery (Roux-en-Y gastric bypass or sleeve gastrectomy) was analyzed.
Renal function was assessed preoperatively and at 1-year postoperatively using estimated glomerular filtration rate (eGFR), urinary albumin-to-creatinine ratio (UACR), and urinary protein-to-creatinine ratio (UPCR).

Main Results:

Postoperative UACR and UPCR were significantly lower than preoperative values (P<.001 and P=.004, respectively).
The prevalence of microalbuminuria decreased from 22.1% preoperatively to 4.4% at 1-year postoperatively.
While eGFR showed a slight improvement, the change was not statistically significant.

Conclusions:

Bariatric surgery leads to significant improvements in microalbuminuria and reductions in UACR and UPCR in obese individuals.
Bariatric surgery can be considered an early intervention for obesity-associated renal impairment.
Early surgical intervention may prevent the progression of kidney disease in obese patients.