Elevated bone aluminum content in dialysis patients without osteomalacia

Area of Science:

• Nephrology
• Bone Metabolism
• Toxicology

Background:

• Dialysis patients often exhibit elevated bone aluminum content (BAC).
• Extremely high BAC is linked to aluminum-related osteomalacia.

Observation:

• Three patients with elevated BAC showed no typical osteomalacia.
• These patients had hyperparathyroidism or mixed uremic bone disease.
• Unusual deferoxamine infusion test results were noted.

Findings:

• Isolated BAC measurements have limitations for diagnosing aluminum-related osteomalacia.
• Bone histomorphometry is essential for accurate diagnosis of aluminum bone disease.
• Elevated parathyroid hormone may protect against aluminum toxicity.

Implications:

• Rethinking diagnostic criteria for aluminum bone disease in dialysis patients.
• Highlighting the importance of bone histomorphometry over BAC alone.
• Suggesting a potential protective role of hyperparathyroidism against aluminum toxicity.