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[Calcium urolithiasis and bone change].

Y Katayama1, T Umekawa, Y Ishikawa

  • 1Department of Urology, Kinki University School of Medicine.

Nihon Hinyokika Gakkai Zasshi. the Japanese Journal of Urology
|January 1, 1990
PubMed
Summary
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Bone mineral density in calcium urolithiasis patients varies by age and sex. Monitoring bone health is crucial for preventing kidney stone recurrence, alongside tracking calcium levels in blood and urine.

Area of Science:

  • Nephrology
  • Endocrinology
  • Bone Metabolism

Background:

  • Calcium urolithiasis is a prevalent condition affecting bone health.
  • Understanding the relationship between bone mineral content and kidney stone formation is essential for patient management.

Purpose of the Study:

  • To investigate bone mineral content abnormalities in patients with calcium urolithiasis.
  • To explore the correlation between bone mineral density, blood/urine parameters, and kidney stone recurrence.
  • To assess the impact of thiazide treatment on bone mineral density in these patients.

Main Methods:

  • Microdensitometry (MD) was used to measure bone mineral content in 157 calcium urolithiasis patients (105 males, 52 females).
  • Patients were categorized into MD normal and MD abnormal groups.

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  • A subgroup of 24 patients (21 males, 3 females) treated with thiazides for over a year was compared with an untreated group, analyzing blood and urine factors.

    • Main Results:

    • In the untreated group, MD abnormality was more frequent in younger males and increased with age in females.
    • MD abnormal males showed higher alkaline phosphatase; MD abnormal females had higher urinary calcium and parathyroid hormone (PTH).
    • Thiazide-treated patients exhibited higher PTH and alkaline phosphatase than untreated patients, with higher alkaline phosphatase in the MD abnormal subgroup.

    Conclusions:

    • Bone mineral density is altered in calcium urolithiasis patients, with distinct patterns in males and females.
    • Monitoring bone mineral content is vital for preventing kidney stone recurrence, complementing the assessment of calcium metabolism in blood and urine.