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Updated: Aug 9, 2026

A Semi-Quantitative Drug Affinity Responsive Target Stability (DARTS) assay for studying Rapamycin/mTOR interaction
05:28

A Semi-Quantitative Drug Affinity Responsive Target Stability (DARTS) assay for studying Rapamycin/mTOR interaction

Published on: August 27, 2019

Sirolimus: mammalian target of rapamycin inhibitor to prevent kidney rejection

P A Cowan1, K E Heizer

  • 1College of Nursing, University of Tennessee Health Science Center, Memphis, TN, USA.

Nephrology Nursing Journal : Journal of the American Nephrology Nurses' Association
|May 3, 2006
PubMed

Insights

Sirolimus offers a novel immunosuppressive mechanism with a distinct side effect profile compared to current drugs. Initial kidney transplant data suggest it may reduce rejection and allow lower doses of other immunosuppressants, potentially enabling steroid withdrawal.

Area of Science:

  • Immunology
  • Nephrology
  • Pharmacology

Background:

  • Current immunosuppressive therapies for organ transplantation are effective but carry significant adverse reactions.
  • Existing immunosuppressants like cyclosporine and tacrolimus have overlapping toxicity profiles.
  • Sirolimus represents a distinct class of immunosuppressive agent.

Purpose of the Study:

  • To evaluate the safety and efficacy of sirolimus in kidney transplant recipients.
  • To compare the adverse reaction profile of sirolimus with established immunosuppressants.
  • To explore the potential of sirolimus in combination therapy to improve transplant outcomes.

Main Methods:

  • Initial clinical data from kidney transplant recipients were analyzed.
  • The adverse reaction profile of sirolimus was compared to cyclosporine and tacrolimus.
  • Sirolimus was studied in combination with cyclosporine or tacrolimus.

Main Results:

  • Sirolimus exhibits a different mechanism of action compared to cyclosporine and tacrolimus.
  • Except for elevated lipid levels, sirolimus's adverse effects show minimal overlap with cyclosporine and tacrolimus.
  • Initial data suggest sirolimus combination therapy may reduce rejection episodes.

Conclusions:

  • Sirolimus presents a potentially favorable safety profile in kidney transplantation.
  • Combination therapy with sirolimus may allow for reduced dosages of cyclosporine or tacrolimus.
  • Sirolimus holds promise for enabling steroid withdrawal in kidney transplant recipients, warranting further research.

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