Comparison of the Impact of Diet vs Thiazide in BMD in Children With Idiopathic Hypercalciuria

Study Overview
=================
Brief Summary
-----------------
The investigator's objective is to compare and evaluate the impact of nutritional treatment vs. pharmacological treatment (hydrochlorothiazide) in bone mineral density in children with idiopathic hypercalciuria. A randomized, open-label, one-year follow-up study will be conducted in children aged 5 to 21 years with a confirmed diagnosis of idiopathic hypercalciuria or lithiasis, excluding those patients with secondary hypercalciuria (primary hyperoxaluria, treatment with vitamin D, Bartter syndrome, primary hyperparathyroidism), previous kidney transplantation. The impact of diet (hyposodic, calcium intake according to DIR for age, normal protein intake and high water intake) will be evaluated vs. the pharmacological treatment (hydrochlorothiazide) on bone mineral density.

Detailed Description
-----------------
A randomized, open-label clinical trial will be conducted with a one-year follow-up. For which basal measurement of calciuria, citraturia, serum creatinine, serum and urinary electrolytes, parathyroid hormone, vitamin D levels and renal ultrasound, as well as dietary intake (protein, energy, salt and water). The dietary intake per day of food and pharmacological treatment will be evaluated quarterly, body composition (anthropometry) and serum and urinary electrolyte levels will be measured; Bone constitution (DXA, quantitative bone ultrasound), IL-1 (as inflammatory markers) and vitamin D will be evaluated every six months. Participants will be blinded to the pharmacological treatment they will receive. The randomization of the participants will be done through the page www.randomization.com. The randomization was performed by blocks, where blocks of 6 members each were made i. Group 1: only recommendations of water intake and reduction of salt intake and hydrochlorothiazide will be given (the dose will be assigned according to weight and sex by a pediatric nephrologist, dose of 0.5-1.5mg / kg / day, starting with the dose 1 mg / kg). Hydrochlorothiazide will be provided to the patient. ii. Group 2: placebo capsules and a strict diet plan will be given. The placebo will look similar to that of hydrochlorothiazide and will be prepared in the Nephrology Research Laboratory by Biol. Ana María Hernández Sánchez and Quim Lourdes Ortiz. The feeding plan will be appropriate for the patient, it will consist of: 40 ml / Kg / day of water Protein according to age and sex Recommendations for low sodium intake Calcium according to age and sex (minimum 800mg)

Official Title
-----------------
Comparison of the Impact of Nutritional Treatment vs Hydrochlorothiazide on Bone Mineral Density and Body Composition in Children With Idiopathic Hypercalciuria of the Hospital Infantil de Méxio Federico Gómez

Conditions
-----------------
Hypercalciuria; Idiopathic, Nephrolithiasis

Intervention / Treatment
-----------------
* Other: Diet for calciuria prevention
* Drug: Hydrochlorothiazide


Participation Criteria
=================
Eligibility Criteria
-----------------
Inclusion Criteria: Clinical diagnosis of idiopathic hypercalciuria Man or women 5 to 21 years Exclusion Criteria: Clinical diagnosis of secondary hypercalciuria (primary hyperoxaluria, treatment with vitamin D, Bartter syndrome, primary hyperparathyroidism) Previous kidney transplant Clinical diagnosis of kidney disease. Vitamin D intake (more than 800 mg/day)

Ages Eligible for Study
-----------------
Minimum Age: 5 Years
Maximum Age: 21 Years

Sexes Eligible for Study
-----------------
All

Accepts Healthy Volunteers
-----------------
No

Study Plan
=================
How is the study designed?
-----------------

Design Details

Primary Purpose: Prevention
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Diet for calciuria prevention<br>placebo capsules and a strict eating plan will be given. The placebo will look similar to that of hydrochlorothiazide and will be prepared in the Nephrology Research Laboratory by Biol. Ana María Hernández Sánchez and Quim Lourdes Ortiz. | Other: Diet for calciuria prevention<br>* Dietary recommendations for water, salt, calcium and proteins according to age and DIR<br>* Other names: Diet for hypercalciuria;|
| Placebo Comparator: hydrochlorothiazide for calciuria prevention<br>recommendations for water intake and decrease in salt intake will be given. | Drug: Hydrochlorothiazide<br>* Hydroclorothiazide recommendations for hypercalciuria<br>* Other names: Hydroclorothiazide in hypercalciuria;|

What is the study measuring?
-----------------
Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| bone mineral density | bone mineral density will be evaluated by means of score z evaluated by dexa | one year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Ca/Cr index | urinary calcium excretion will be evaluated | one year | 

 Terms related to the study
=================
Keywords Provided by Centre Hospitalier Valida
-----------------
diet, drinking water, salt, dietaryprotein