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Related Experiment Videos

Posttransplantation bone disease.

John Cunningham1

  • 1The Department of Nephrology, The Middlesex Hospital, Mortimer Street, London W1T 3AA, UK. drjohncunningham@aol.com

Transplantation
|March 24, 2005
PubMed
Summary
This summary is machine-generated.

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Transplant patients face significant bone loss and fracture risks due to immunosuppressive drugs like glucocorticoids. Bisphosphonates may help prevent bone loss and fractures, while other treatments show limited effectiveness.

Area of Science:

  • Nephrology
  • Immunology
  • Orthopedics
  • Endocrinology

Background:

  • Post-transplant patients are at high risk for skeletal complications, including bone loss and fractures.
  • Pre-existing conditions and immunosuppressive drugs, particularly glucocorticoids, exacerbate skeletal fragility.

Purpose of the Study:

  • To review the skeletal toxicity of immunosuppressive agents used in transplantation.
  • To evaluate potential preventative and therapeutic strategies for post-transplant bone disease.

Main Methods:

  • Literature review of studies on immunosuppressive drugs and bone health in transplant recipients.
  • Analysis of clinical and preclinical data on calcineurin inhibitors, mycophenolate mofetil, and sirolimus.
  • Evaluation of the efficacy of bisphosphonates, vitamin D, calcitriol, and bone anabolic agents.

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Main Results:

  • Glucocorticoids are significantly toxic to bone. Calcineurin inhibitors (cyclosporine, tacrolimus) cause osteopenia in animal models, but clinical skeletal effects are less clear.
  • Mycophenolate mofetil and sirolimus appear to have minimal skeletal toxicity.
  • Bisphosphonates show promise in reducing early bone loss and potentially fracture rates. Calcitriol may be beneficial, while vitamin D and calcium are ineffective.

Conclusions:

  • Minimizing glucocorticoid exposure and using antiresorptive agents like bisphosphonates are key strategies for managing post-transplant bone disease.
  • Further research is needed on bone anabolic agents for skeletal recovery after transplantation.