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Related Concept Videos

Tissue Transplantation01:24

Tissue Transplantation

455
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...
455

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Microchimerism, PERV and Xenotransplantation.

Joachim Denner1

  • 1Institute of Virology, Free University Berlin, 14163 Berlin, Germany.

Viruses
|January 21, 2023
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Summary

Microchimerism, the presence of cells from another individual, occurs in xenotransplantation. Distinguishing pig cell microchimerism from porcine endogenous retrovirus (PERV) infection is crucial for future human transplants.

Keywords:
detection methodsmicrochimerismporcine endogenous retrovirusesxenotransplanation

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Area of Science:

  • Immunology
  • Transplantation Biology
  • Genetics

Background:

  • Microchimerism involves cells from a distinct individual, commonly seen in fetomaternal interactions and human organ transplants.
  • Xenotransplantation, particularly using porcine (pig) cells or organs, is expected to result in microchimerism.
  • Porcine endogenous retroviruses (PERVs) in pig cells pose a diagnostic challenge, potentially mimicking infection in recipients.

Approach:

  • This review provides a comprehensive overview of microchimerism in the context of xenotransplantation.
  • It details methods for differentiating between PERV infection and microchimerism in transplant recipients.
  • The focus is on understanding and accurately interpreting screening results.

Key Points:

  • Microchimerism is the bidirectional transfer of cells between individuals.
  • Xenotransplantation, especially from pigs, leads to microchimerism.
  • Accurate detection methods are essential to distinguish microchimerism from PERV infection.

Conclusions:

  • Understanding microchimerism in xenotransplantation is vital for accurate diagnostic interpretation.
  • Distinguishing pig cell microchimerism from PERV infection is critical for patient safety.
  • This knowledge is foundational for upcoming human xenotransplantation trials.