Renal Calculi
Conditions
Keywords
renal calculi, Renal Ca oxalate stones, VDR gene
Brief summary
Evaluation of Prevalence, Molecular and Genetic Backgrounds of Calcium-Based stones among Patients with Renal Calcular Disease in Mansoura Urology and Nephrology Center
Detailed description
Back ground: Nephrolithiasis is a prevalent disease with high morbidity, the incidence and prevalence of nephrolithiasis has risen worldwide. Calcium nephrolithiasis may be considered as a complex disease having multiple pathogenic mechanisms and characterized by various clinical manifestations. Both genetic and environmental factors may increase susceptibility to calcium stones. Polymorphisms of vitamin D receptor (VDR), calcium-sensing receptor gene (CASR) and AGXT have been associated with risk of urolithiasis, but, with inconsistent results and lack data from Egyptian population. Objective: Therefore, the present study aims to investigate the prevalence, mutational profile for these genes in patients with Ca-based stones, admitted to Mansoura Urology and Nephrology Center. Methodology: In this study, employing sequencing of the coding exons of the calcium-sensing receptor gene (CASR), vitamin D receptor (VDR) and AGXT for a 50 of Egyptian calcium kidney stone-formers and 20 control subjects. The results of the mutational profile data will be correlated with risk of stone recurrence over 2 years.
Interventions
PROCEDUREpercutaneous nephrlolithotomy
Endoscopic removal of renal stones
GENETICVDR gene, CASR gene
checking possible mutations of VDR and CASR genes
Sponsors
Mansoura University
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Healthy volunteers
Yes
Inclusion criteria
* All patients with unilateral or bilateral renal stones (de novo or recurrent) who were candidates for endoscopic or surgical intervention were included. Metabolic workup was done for selected patients with radio-opaque stones, while genetic testing was done for those with dominant Ca composition proven by postoperative stone analysis. Thirty healthy individuals with no urologic abnormalities were involved as control cases. Patients with renal calculi for whom metabolic and genetic testing were performed are designated "α" cases.
Exclusion criteria
* For metabolic and genetic testing, patients with a well-known lesion precipitating stone disease were excluded e.g. ureteric stricture, ureteropelvic or ureterovesical junction obstruction, urinary diversion, history of ureterovesical re-implantation as well as patients with non-Ca stones by post-operative stone analysis
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| prevalence of Ca-based renal stones | two years | Prevalence of Ca stones among patients with kidney stone disease admitted in Mansoura UNC throughout the study duration as assessed by infrared spectroscopic stone analysis |
| Genetic background of Ca based renal stones | two years | Identification of metabolic derangement and genomic alterations in patients with renal Ca stones (CASR, and VDR genes) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Stone recurrence | two years | Evaluation of the possible correlation of detected genomic mutations assessed by genetic analysis with stone recurrence at 2 years following stone management. |
Countries
Egypt
Outcome results
None listed