Active clinical trials for "Kidney Calculi"

The goal of this study is to gain new knowledge about genetic risk factors that may affect the kidney stone recurrence. The study seeks to understand if different forms of genes result in an increased risk of kidney stone recurrence.

The purpose of this study is to collect medical information from a large number of patients in many areas of the world with primary hyperoxaluria (PH), Dent disease, Cystinuria and APRT deficiency. This information will create a registry that will help us to compare similarities and differences in patients and their symptoms. The more patients we are able to enter into the registry, the more we will be able to understand the Primary Hyperoxalurias,Dent disease, cystinuria and APRT and learn better ways of caring for patients with these diseases.

Reporting prevalence of uric acid based renal stones among patients with nephrolithiasis admitted to Mansoura Urology and Nephrology center (MUNC). Furthermore, identification of monogenic and polygenic uric acid stone formers. Identification of factors associated uric acid stone recurrence as well as determinants of laterality in patients with uric acid based renal stones

Within the CHU Brugmann hospital, a multidisciplinary Renal Lithiasis and Mineral Metabolism clinic has been inaugurated in 2017. During the first months of 2018, the activities of the clinic have been focalized on the pre-analytical and analytical aspects of metabolic work-up. 15 patients are followed on average per week. The clinic is recognized as one of the 24 core centers of the European Nephrolithiasis Network and it is the only clinic included in this network in Belgium. The actual practice of the clinic has been published in a survey regarding current practice patterns of stone centers across Europe. Following this publication, the members of the board of the European Nephrolithiasis Network have put as common effort to standardize the care of kidney stone formers and obtained endorsement to perform a second survey in each core center. The aim of this initiative is to share information from real patients in aggregate form. Each core center practice will be evaluated by the second survey by an analysis of the robustness of clinical, biological, urological and radiological data. The main aim of this project consists in the constitution of a clinical, biological, urological and radiological database of followed patients. This database could be shared in aggregate form by using a specialized coding system for the patients. The database will enable the investigators to: describe the epidemiological and clinico-biological characteristics of the CHU Brugmann patient population gather information about the kidney function outcome analyze and classify identified prolithogenics factors characterize related metabolic disorders (diabetes mellitus, metabolic syndrome, arterial hypertension, chronic kidney diseases, osteoporosis...) identify the patients that could participate in the international trials on kidney stone disease identify the patients that will need a specialized genetic testing. evaluate the impact of the clinic activity and metabolic work-up on the rate of recurrence of kidney stones in the patient population. The obtained data will be compared with the global data from the European Nephrolithiasis Network.

The corticomedullary gradient is largely responsible for developing the gradients that are needed to concentrate urine (more solutes and less water). The ability of the kidneys to produce concentrated urine is a major determinant of the ability to survive the warm weather. When temperatures are high, we lose water through sweat, and so the kidneys retain water to maintain fluidity in the blood. The maintenance of a sodium (salt) gradient is required for urine concentration because increased medullary sodium concentration increases the reabsorption of water into the kidney, to be redistributed in the blood. The purpose of this study is to know if the corticomedullary gradient is altered in patients across a wide spectrum of kidney disease using sodium Magnetic Resonance Imaging (MRI), a machine that takes pictures and measures the salt content in the kidneys. 23Na kidney MRI, will provide functional MR of the kidney as a non-invasive tool to describe medullary function to improve management of chronic and kidney disease.

The SKSC is a continuous database with the objective of a standardized diagnosis and monitoring of patients with kidney stones as well as the establishment of a Biobank.

This study is being done to obtain samples from patients with primary hyperoxaluria, cystinuria, adenine phosphoribosyl transferase (APRT) deficiency, and Dent disease, and from their family members, for use in future research.

This study seeks to examine the effects of a heterozygous mutation of the AGXT gene in a stone forming population on endogenous oxalate production. Participants will consume a controlled low-oxalate diet and provide blood and urine samples to measure the amount of oxalate in their bodies. Subjects will then be administered an intravenous (IV) load of glycolate, providing additional blood and urine samples afterwards to measure any increase in oxalate levels.

The primary purpose of this study is to evaluate the effect of lumasiran on the percent change in urinary oxalate excretion in patients with recurrent calcium oxalate kidney stone disease.

In the diagnosis of renal colic gallstone , in addition to clinical and biological factors, it is a key : medical imaging. Currently , the French recommendations require at least a couple of Abdomen radiography Without Preparation lying face (ASP ) associated with abdominal ultrasound . "The abdominopelvic CT scan without injection of contrast is the examination of choice. Current recommendations in the management of gallstone colic simply based on the joint use of analgesics , anti inflammatory drugs and control of water intake . The mechanism of analgesic action of this treatment is a decrease in the pressure in the cavities by decrease in diuresis and inflammation treatment of ureteral permitting passage of urine . ) The expulsive medical therapy remains under evaluation. The French Association of Urology does not recommend at this time for lack of evidence deemed sufficient. For foreign companies Urology (EAU , AUA) , the use of calcium channel blockers or alpha blockers in the treatment of symptomatic lower ureteral stones (4 to 10mm ) is recommended (grade 1A) . However, there are less formal studies of their effectiveness . Investigators wish to demonstrate the effectiveness of alpha in medical expulsive therapy for pelvic stones 4 to 10mm .