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Updated: Apr 5, 2026

Cytosolic Calcium Measurements in Renal Epithelial Cells by Flow Cytometry
Published on: October 28, 2014
Hydrochlorothiazide reduces urinary calcium excretion in a child with Lowe syndrome
1Section of Pediatric Nephrology , University of California Davis Medical Center , Sacramento, CA , USA.
Insights
Children with Lowe syndrome often experience kidney issues like nephrocalcinosis due to hypercalciuria. This study shows thiazide diuretics can effectively manage hypercalciuria in a child with Lowe syndrome, offering a new treatment option.
Area of Science:
- Pediatric Nephrology
- Genetics and Rare Diseases
Background:
- Lowe syndrome is a rare genetic disorder associated with significant risks of nephrocalcinosis and nephrolithiasis.
- Hypercalciuria is a primary driver of these renal complications in affected children.
- Current interventions like increased fluid intake and acidosis correction have limited efficacy.
Purpose of the Study:
- To investigate the safety and efficacy of thiazide diuretics in managing hypercalciuria in a child with Lowe syndrome.
- To address the unmet need for effective treatments for renal complications in Lowe syndrome.
Main Methods:
- A case report detailing the treatment of a child diagnosed with Lowe syndrome.
- Administration of thiazide diuretics to manage hypercalciuria.
- Monitoring of urinary calcium excretion and renal health indicators.
Main Results:
- The child with Lowe syndrome showed successful management of hypercalciuria following thiazide treatment.
- Thiazide diuretics were found to be effective in reducing urinary calcium excretion in this patient.
- No significant adverse effects were observed during the treatment period.
Conclusions:
- Thiazide diuretics represent a viable and effective therapeutic option for managing hypercalciuria in children with Lowe syndrome.
- This case challenges previous concerns regarding the efficacy and safety of thiazides in this population.
- Further research is warranted to confirm these findings in a larger cohort.
Abstract:
There is a growing recognition that children with Lowe syndrome are at risk of nephrocalcinosis and nephrolithiasis from hypercalciuria. Increased fluid intake and correction of metabolic acidosis have remained the focus for intervention but are not always successful. Thiazide diuretics, which reduce urinary calcium excretion, have not been used in these children, due to concerns that (i) they may not work as a result of the underlying tubular abnormalities and (ii) their risk may outweigh the potential benefits they have to offer. Herein we report a child with Lowe syndrome who was successfully treated with thiazides in managing his hypercalciuria.
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