Hydrochlorothiazide reduces urinary calcium excretion in a child with Lowe syndrome

Lavjay Butani1

  • 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.

Related Concept Videos

Antihypertensive Drugs: Thiazide-Class Diuretics01:15

Antihypertensive Drugs: Thiazide-Class Diuretics

Thiazide diuretics are sulfonamide derivatives featuring a benzothiadiazine ring system in their molecular structure. Based on this structure, thiazide diuretics can be categorized into two groups: thiazide-type and thiazide-like diuretics. Thiazide-type diuretics, including hydrochlorothiazide and chlorothiazide, consist of a benzothiadiazine backbone with an attached sulfonamide group. Thiazide-like diuretics, such as chlorthalidone and indapamide, lack the thiazide ring but demonstrate...
2.3K
Antihypertensive Drugs: Potassium-Sparing Diuretics01:28

Antihypertensive Drugs: Potassium-Sparing Diuretics

Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
2.7K
Urinary Tract Calculi IV: Nutrition Therapy and Prevention01:27

Urinary Tract Calculi IV: Nutrition Therapy and Prevention

Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...
660
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
1.2K
Antihypertensive Drugs: Action of Diuretics01:16

Antihypertensive Drugs: Action of Diuretics

Diuretics are antihypertensive drugs used to treat hypertension resulting from sodium and water retention. Sodium, vital for fluid balance and nerve or muscle function, is regulated by the kidneys through millions of nephrons. Blood enters nephrons via afferent arterioles, which branch into capillaries called glomeruli. These filter blood plasma, allowing water and solutes, like sodium ions, to pass through capillary walls into Bowman's capsule. The filtrate then flows through various...
2.8K
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
329