Hypercalcaemic osteomalacia due to aluminium toxicity

Area of Science:

• Nephrology
• Histopathology
• Toxicology

Background:

• Chronic renal failure (CRF) often leads to bone disease, including osteomalacia.
• Osteomalacia resistant to vitamin-D therapy presents a clinical challenge in CRF patients.

Purpose of the Study:

• To investigate the role of aluminium in the pathogenesis of osteomalacia in patients with CRF.
• To explore the association between aluminium deposition, osteomalacia, and hypercalcemia in CRF.

Main Methods:

• Bone biopsy analysis in 16 patients with CRF and vitamin-D resistant osteomalacia.
• Utilized X-ray microanalysis and histochemical staining to detect aluminium.
• Clinical data including serum calcium levels were analyzed.

Main Results:

• Aluminium was detected at the bone-calcified interface in all patients studied.
• 14 out of 16 patients exhibited hypercalcemia.
• A correlation between aluminium deposition, osteomalacia, and hypercalcemia was observed.

Conclusions:

• Aluminium accumulation in bone contributes to osteomalacia in CRF patients.
• Aluminium toxicity should be considered in CRF patients with hypercalcemia to avoid misdiagnosis and inappropriate parathyroidectomy.