Important interactions of drugs with immunosuppressive agents used in transplant recipients

K D Lake1, D M Canafax

  • 1Division of Cardiothoracic Transplantation and Research, Minneapolis Heart Institute Foundation, Abbott Northwestern Hospital, Minnesota 55407, USA.

Insights

Solid organ transplant recipients require careful management of immunosuppressive drugs. Introducing new medications can alter drug levels, risking serious complications like infection or organ rejection due to drug-drug interactions.

Area of Science:

  • Pharmacology
  • Transplantation Medicine
  • Clinical Pharmacy

Background:

  • Solid organ transplant recipients rely on multiple immunosuppressants to prevent graft rejection.
  • These patients frequently use additional medications for comorbidities, increasing interaction risks.

Purpose of the Study:

  • To highlight the potential for drug-drug interactions in transplant recipients.
  • To discuss the clinical implications of altered immunosuppressant levels.

Main Methods:

  • Review of existing literature on drug interactions in transplant patients.
  • Analysis of potential interactions with new and existing immunosuppressive agents.

Main Results:

  • Concomitant medications can alter immunosuppressive drug concentrations.
  • Interactions may lead to over-immunosuppression (infection) or under-immunosuppression (rejection).
  • Additive toxicities, such as nephrotoxicity, are also a concern.

Conclusions:

  • Close monitoring of transplant patients is crucial when new drugs are introduced.
  • Understanding drug-drug interactions is vital for optimizing immunosuppression and preventing adverse events.
  • Emerging immunosuppressants present new challenges for managing drug interactions.

Related Concept Videos

Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Tissue Transplantation01:24

Tissue Transplantation

Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents01:29

Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents

Crohn's disease is an inflammatory bowel disorder marked by chronic inflammation of the GI tract. Various treatment strategies for Crohn's disease are employed, such as immunomodulatory agents, glucocorticoids, and biologics or anti-TNF therapy. Azathioprine (Imuran), a commonly used immunomodulatory drug for Crohn's disease, is converted in the body to mercaptopurine, which inhibits purine biosynthesis and cell proliferation. Both are utilized in severe cases of Inflammatory Bowel Disease...
Pharmacokinetics: Drug–Drug Interactions01:25

Pharmacokinetics: Drug–Drug Interactions

Drug interactions occur when the pharmacological effect of one drug is altered by another substance, either enhancing or diminishing its activity. The drug whose activity is altered is known as the object drug, and the substance causing the alteration is called the agent drug or the precipitant. The net effects of these interactions are mostly undesirable, leading to decreased effectiveness or increased adverse effects. In rare cases, interactions can be beneficial, such as the enhanced...
Drug toxicity: Drug–Drug Interaction01:30

Drug toxicity: Drug–Drug Interaction

Drug–drug interactions can precipitate toxicity through multiple mechanisms. Absorption interactions alter how drugs enter the body, exemplified when ranitidine increases the absorption of basic drugs, while cholestyramine decreases the levels of propranolol. Protein binding interactions occur when drugs share the same binding sites on plasma proteins. Drugs like aspirin and warfarin, when bound in excess, can lead to increased free drug concentrations, enhancing the potential for...
Kidney Transplant III: Nursing Management01:16

Kidney Transplant III: Nursing Management

Postoperative Nursing Management for Kidney Transplant PatientsPostoperative nursing management care includes monitoring the surgical site, encouraging early movement, and promoting lung health through breathing exercises. Nurses also administer prescribed medications like H2-blockers, such as famotidine, or proton pump inhibitors, like omeprazole, to help prevent gastrointestinal ulcers and bleeding. Fungal infections in the mouth and bladder can result from immunosuppressive and antibiotic...