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Related Concept Videos

Tissue Transplantation01:24

Tissue Transplantation

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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...
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Case Report: COVID-19 Infection of a Transplanted Heart Simulating Cellular Rejection.

Alaa A Salim1, Abdullah Alghamdi2, Arif Hussain2

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Heart transplant patients with COVID-19 may experience acute cellular rejection. SARS-CoV-2 viral particles found in myocardial tissue suggest an immune response mimicking rejection, complicating patient management.

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Area of Science:

  • Cardiology
  • Infectious Diseases
  • Immunology

Background:

  • Solid organ transplant recipients face high mortality from SARS-CoV-2 infection.
  • Data on recurrent cellular rejection and immune response to SARS-CoV-2 post-heart transplant are limited.

Observation:

  • A 61-year-old male heart transplant recipient developed mild COVID-19 symptoms 4 months post-transplant.
  • Endomyocardial biopsies revealed acute cellular rejection despite stable cardiac function and immunosuppression.
  • Electron microscopy confirmed SARS-CoV-2 viral particles within myocardial rejection foci.

Findings:

  • Myocardial inflammation in this immunocompromised patient was linked to the host's immune response to SARS-CoV-2.
  • The observed inflammation mimicked acute cellular rejection in a heart transplant recipient.
  • This case highlights the presence of the virus within the myocardium during rejection episodes.

Implications:

  • Increased awareness of potential SARS-CoV-2-induced myocardial inflammation mimicking rejection in heart transplant patients.
  • Challenges in managing immunocompromised heart transplant patients with active COVID-19.
  • Need for further research into the pathology and treatment guidelines for COVID-19 in heart transplant recipients.