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Microalbuminuria in normotensive patients with autosomal-dominant polycystic kidney disease

A Martinez-Vea1, C Gutierrez, A Bardají

  • 1Nephrology Service, Hospital Universitari de Tarragona Joan XXIII, Spain.

Scandinavian Journal of Urology and Nephrology
|November 24, 1998
PubMed

Insights

Microalbuminuria (MA) is common in normotensive autosomal-dominant polycystic kidney disease (ADPKD) patients. This finding suggests MA may indicate early kidney and vascular damage in this population.

Area of Science:

  • Nephrology
  • Cardiology
  • Genetics

Background:

  • Autosomal-dominant polycystic kidney disease (ADPKD) is a common genetic disorder.
  • Microalbuminuria (MA) is a known complication in hypertensive ADPKD patients.
  • The prevalence of MA in normotensive ADPKD patients remains understudied.

Purpose of the Study:

  • To determine the prevalence of microalbuminuria (MA) in normotensive patients with autosomal-dominant polycystic kidney disease (ADPKD).
  • To investigate potential determinants of urinary albumin excretion in this cohort.
  • To assess the association between MA and early signs of renal and vascular damage.

Main Methods:

  • A cohort of 42 normotensive ADPKD patients was studied.
  • Microalbuminuria (MA) was assessed via 24-hour urine samples collected over six months.
  • Echocardiography was performed to measure left ventricular mass; metabolic parameters and enzyme activities were also analyzed.

Main Results:

  • 19% of normotensive ADPKD patients exhibited microalbuminuria (MA).
  • Microalbuminuric patients showed a trend towards higher systolic blood pressure, plasma renin activity, and left ventricular mass.
  • No significant correlation was found between MA and age, sex, BMI, blood pressure, or ACE levels.

Conclusions:

  • Microalbuminuria (MA) is prevalent in normotensive autosomal-dominant polycystic kidney disease (ADPKD) patients.
  • MA may serve as an early indicator of renal and vascular damage in normotensive ADPKD.
  • Further research is warranted to elucidate the clinical significance of MA in this population.

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