Renal complications from bisphosphonate treatment

Area of Science:

• Nephrology
• Pharmacology
• Oncology

Background:

• Bisphosphonate therapy, particularly for malignant bone diseases, has been linked to renal complications for over a decade.
• Recent research has elucidated the nature of renal injury associated with bisphosphonates.

Purpose of the Study:

• To review and summarize the renal complications associated with bisphosphonate therapy.
• To highlight the types of renal injury, their frequency, and recommended monitoring strategies.

Main Methods:

• Literature review of studies on bisphosphonate-induced nephrotoxicity.
• Analysis of reported cases of renal complications associated with various bisphosphonates.
• Summary of current understanding of the mechanisms of renal injury.

Main Results:

• Pamidronate can rarely cause collapsing focal segmental glomerulosclerosis, leading to nephrotic syndrome and renal insufficiency.
• Other bisphosphonates have been implicated in isolated cases of similar injury.
• Transient creatinine elevations and acute tubular necrosis have also been observed, with frequency correlating to bisphosphonate potency.
• While renal excretion is primarily glomerular, tubular injury suggests potential bisphosphonate uptake by tubular cells.

Conclusions:

• Renal complications from bisphosphonates are infrequent but necessitate vigilance.
• Serum creatinine monitoring is crucial, especially with intravenous administration.
• The precise mechanisms of bisphosphonate-induced renal insufficiency remain unclear, warranting further research into tubular cell uptake.