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Effect of Sodium Thiosulfate on Urine Chemistries of Hypercalciuric Stone Formers

2014-08-27 03:15:10 | BioPortfolio

Summary

The investigators study is designed as a pilot study to study the effect of STS on urine chemistries in stone formers and normal controls. It is expected to continue for a duration of 1 year and will have two groups: 20 normal controls, who are healthy subjects without known kidney disease or nephrolithiasis, and 20 subjects with documented recurrent nephrolithiasis and hypercalciuria. Patients will be recruited from Dr Goldfgarb's stone clinic at VA Hospital and controls would be voluntary participants from NYU School of Medicine. Subjects who are pregnant or nursing, taking alcohol or drugs, have known CKD or are unable to give consent would be excluded from the study. Any diuretics or citrate containing drugs would be held for a period of 2 weeks during the study period to achieve washout of the effects of those drugs on urine chemistries. Oral STS 10mmol (10ml of 25% STS) BID will be administered to both groups for 7 days; four 24 hour urine collections, 2 prior and 2 at the end of the study, would be done with all participants. A diet diary would be maintained by subjects concomitantly during the study periods. The investigators then plan to compare the two groups in terms of urine chemistries to detect any changes in these parameters with thiosulfate administration. Based on prior animal experiments and human studies with STS the investigators anticipate that it would have a favorable effect on the supersaturation of Ca oxalate/phosphate and therefore its long term use would be helpful in preventing nephrolithiasis.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Kidney Stones

Intervention

Sodium thiosulfate

Location

VA New York Harbor Healthcare System
New York
New York
United States
10010

Status

Recruiting

Source

VA New York Harbor Healthcare System

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:15:10-0400

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Medical and Biotech [MESH] Definitions

A sodium salt of gold thiosulfate. It has uses like the ORGANOGOLD COMPOUNDS.

Stones in the KIDNEY, usually formed in the urine-collecting area of the kidney (KIDNEY PELVIS). Their sizes vary and most contains CALCIUM OXALATE.

A chronic inflammatory condition of the KIDNEY resulting in diffuse renal destruction, a grossly enlarged and nonfunctioning kidney associated with NEPHROLITHIASIS and KIDNEY STONES.

Stones in the URETER that are formed in the KIDNEY. They are rarely more than 5 mm in diameter for larger renal stones cannot enter ureters. They are often lodged at the ureteral narrowing and can cause excruciating renal colic.

An enzyme that catalyzes the transfer of the planetary sulfur atom of thiosulfate ion to cyanide ion to form thiocyanate ion. EC 2.8.1.1.

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