View clinical trials related to Hyperoxaluria.
Filter by:The purpose of this study is to learn more about a condition called 'unclassified hyperoxaluria'. People with this condition have large amounts of oxalate in their urine, which can cause kidney stones and kidney failure. We do not know what causes the high level of oxalate in the urine. In this study, we will evaluate absorption of a test dose of oxalate taken orally by measuring the amount of the test dose that is eliminated in the urine. We will compare the results of affected patients to healthy volunteers.
The purpose of this study was to determine the effect of two probiotic preparations (Agri-King Synbiotic and Oxadrop) on urinary oxalate excretion in patients with mild hyperoxaluria. Probiotics are live microorganisms thought to be beneficial to the host organism. Hyperoxaluria is a hereditary disorder that causes a special kind of stone to form in the kidney and urine. Oxalates are naturally-occurring substances found in plants, animals, and in humans. Excretion of oxalates in the urine is a risk factor for kidney stone formation. Our hypothesis was that the mild hyperoxaluria is due to over absorption of oxalate from food and that probiotics will improve gastrointestinal barrier function to decrease oxalate absorption across the gut (and hence its elimination in the urine). In the study, participants were randomized to placebo, Agri-King Synbiotic, or Oxadrop, and were treated for 6 weeks. Patients were maintained on a controlled diet to remove the confounding variable of differing oxalate intake and availability from food.
The aim of this study is to assess the efficacy and safety of betaine in reducing urine oxalate excretion of Type 1 Primary Hyperoxaluria (PHI) patients. Hypothesis: Betaine will effectively reduce urine oxalate excretion in Primary Hyperoxaluria Type I patients.
Urinary protein levels are not routinely measured in stone patients while there is strong evidence that proteins play a role in the etiology of stones. The purpose of this study is to examine the urinary and serum proteins of stone formers compared to healthy subjects utilizing the high throughput method, Surface Enhanced Laser Desorption/Ionization (SELDI). We hypothesize that there is a unique set of proteins expressed in serum and urine in stone patients that can be detected by SELDI. Ultimately, this will better our understanding of stone disease and help develop new prevention strategies.