title: Early improvement in albuminuria in non-diabetic patients after Roux-en-Y bariatric surgery.
abstract: BACKGROUND
  Obesity is a growing epidemic in the USA that has been shown to be associated with chronic kidney disease and albuminuria. Bariatric surgery is an effective means of achieving long-term weight loss and improvements in metabolic derangements including albumin excretion over the long term.
  
  
  METHODS
  We report changes in urinary albumin excretion levels in the early post-operative period for a euglycemic, predominantly Hispanic American cohort undergoing Roux-en-Y gastric bypass surgery.
  
  
  RESULTS
  Our cohort of 38 patients was largely female (89.5%) and predominantly Hispanic (76.3%) with a mean BMI of 46 ± 8.0 kg/m(2). Over half (53.3%) of the patients with significant preoperative albumin excretion in our cohort lowered their albumin excretion levels to <20 mg/g of creatinine. This early reduction in albumin excretion in our cohort correlated significantly with the level of albumin excretion preoperatively but not with the degree of weight loss experienced in this early post-operative period.
  
  
  CONCLUSIONS
  Improvements in microalbuminuria in the early post-operative period after Roux-en-Y surgery may result from an interplay between changes in gastrointestinal hormones, insulin sensitivity, blood pressure, and adipose tissue-and needs further study.
authors: Department of Medicine, Division of Nephrology, Columbia University Medical Center, 622W 168th Street, PH4-124, New York, NY 10032, USA. sm2206@columbia.edu
authors: Sumit
authors: S
authors: Mohan
authors: Jennifer
authors: J
authors: Tan
authors: Saritha
authors: S
authors: Gorantla
authors: Leaque
authors: L
authors: Ahmed
authors: Constance M
authors: CM
authors: Park
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