Study of Sodium Bicarbonate in Kidney Transplant Recipients
About half of transplanted kidneys continue to work ten years after the time of transplant. The purpose of this study is to test whether oral sodium bicarbonate might improve the long-term function of a transplanted kidney.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Randomized Trial of Sodium Bicarbonate in Renal Transplant Recipients With Low-normal Serum Bicarbonate Levels|
- Urinary transforming growth factor-beta1 [ Time Frame: 6 months ] [ Designated as safety issue: No ]This is considered a surrogate marker of chronic allograft nephropathy (tubulointerstitial fibrosis).
- urinary ammonia excretion [ Time Frame: 6 months ] [ Designated as safety issue: No ]a component of urinary acid excretion
|Study Start Date:||November 2010|
|Study Completion Date:||November 2012|
|Primary Completion Date:||November 2012 (Final data collection date for primary outcome measure)|
Experimental: Sodium bicarbonate
This group will receive oral sodium bicarbonate 650mg three times daily for 6 months.
Drug: Sodium bicarbonate
Sodium bicarbonate 650mg by mouth three times daily for 6 months.
No Intervention: Control
This group will not receive any sodium bicarbonate.
Renal allograft survival ten years after transplant is only about 50%. In people with non-transplant chronic kidney disease (CKD), sodium bicarbonate treatment seems to delay progressive decline in kidney function in those with low serum bicarbonate levels (metabolic acidosis). This may be because sodium bicarbonate reduces renal ammonia production and hence fibrosis. Observational evidence suggests that people with CKD and low-normal serum bicarbonate levels might also benefit from sodium bicarbonate treatment. The benefit of sodium bicarbonate treatment on long-term renal allograft survival is not known. The purpose of this study is to determine the effect of oral sodium bicarbonate on:
- urinary transforming growth factor-beta1, a marker of renal fibrosis
- urinary ammonia excretion.