Xenotransplantation: Benefits & Challenges

• Context (TOI): Women receive gene-edited pig kidney through Xenotransplantation in the US.

About Xenotransplantation

• Xenotransplantation, also known as heterologous transplant, involves the transplantation, implantation or infusion into a human recipient of either:
  1. Live cells, tissues, or organs from a nonhuman animal source, or
  2. Human body fluids, cells, tissues or organs that have had ex vivo contact with live nonhuman animal cells, tissues or organs.
• Benefits: Xenotransplantation shows promise for treating conditions like neurodegenerative diseases and diabetes, where human cells and tissues are often unavailable.

Why are pigs often used for xenotransplantation?

• The pig’s anatomical and physiological parameters are similar to that of humans, and the breeding of pigs in farms is widespread and cost-effective.
• Also, many varieties of pig breeds are farmed, which provides an opportunity for the size of the harvested organs to be matched with the specific needs of the human recipient.

Credit: BBC

Uses of xenotransplantation products

Source: FDA

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Challenges

• Zoonotic Diseases: The risk of transmitting diseases from animals to humans is another concern.
• Ethical Concerns: Raises ethical questions about animal rights and welfare. Additionally, there are concerns regarding the genetic modification of animals for this purpose.
• Psychological Impact: Recipients of animal organs might face psychological challenges and social stigma, which can negatively affect their mental health and overall quality of life.
• Long-Term Viability: The long-term function and survival of xenotransplanted organs are uncertain. These organs may not perform as efficiently or last as long as human organs, presenting a challenge for patients and medical practitioners.