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Parathyroid hormone in urinary stone patients

A Khanam1, M A Rahman

  • 1Department of Biochemistry, Jinnah Postgraduate Medical Centre, Karachi, Pakistan.

Molecular and Cellular Biochemistry
|April 7, 1993
PubMed
Summary

This study found no significant correlation between parathyroid hormone levels and calculus disease, despite some patients exhibiting hyperparathyroidism. Elevated parathyroid hormone was not a reliable indicator for stone formation in this patient cohort.

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Area of Science:

  • Nephrology
  • Endocrinology
  • Biochemistry

Background:

  • Calculus disease, encompassing kidney stones and bladder stones, affects a significant portion of the population.
  • The role of the parathyroid glands and parathyroid hormone (PTH) in the development of calculus disease is not fully understood.
  • Previous studies suggest a potential link between hyperparathyroidism and stone formation, but evidence remains inconclusive.

Purpose of the Study:

  • To investigate the association between parathyroid hormone levels and calculus disease.
  • To determine if elevated parathyroid hormone is a contributing factor in the formation of kidney stones and bladder stones.
  • To assess other biochemical markers in stone patients compared to control subjects.

Main Methods:

  • Serum levels of calcium, inorganic phosphate, alkaline phosphatase, and parathyroid hormone were measured in 22 control subjects and 42 patients with calculus disease.
  • Urinary excretion of calcium and inorganic phosphate was also determined.
  • Patients were categorized based on stone location (kidney or bladder).

Main Results:

  • Normocalcemic and normocalciuric stone patients showed slightly higher parathyroid hormone levels than controls, but the difference was not statistically significant.
  • Some patients with calculus disease presented with hyperparathyroidism.
  • Kidney stone patients had increased serum alkaline phosphatase and urinary calcium excretion.
  • All stone patients exhibited increased urinary oxalate excretion.
  • Urinary inorganic phosphate levels did not differ significantly between stone patients and controls.

Conclusions:

  • Subclinical hyperparathyroidism and stone formation in patients are not correlated.
  • Elevated parathyroid hormone levels are not a significant predictor of calculus disease in normocalcemic and normocalciuric individuals.
  • Further research is needed to elucidate the complex mechanisms underlying stone formation.

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