Chinese Man Receives Pig Lungs in Landmark Transplant
A 39-year-old man has become the first recipient of lungs from a genetically modified pig, according to a report published in the Nature Journal on August 26. The groundbreaking transplant was performed last year at the first affiliated hospital of Guangdong Medical University in China.
The patient, who had suffered brain damage due to a cerebral hemorrhage, managed to keep the pig lungs functioning for nine days. Notably, the left lung was sourced from a pig engineered with six genetic modifications by a Chinese firm, Chengdu Clonorgan Biotechnology.
This isn’t the first time pig organs have been used in human transplants. Clinical trials for pig liver and kidney transplants are currently underway in the US. Researchers aimed to investigate how the transplanted lungs would fare against the human immune system, particularly concerning issues of rejection, a common concern in organ transplants.
In the study outlined in the Nature Journal, the researchers reported encouraging results. During a surveillance period of 216 hours, there were no signs of rejection or infection. Initial observations indicated some swelling and damage to the lungs, attributed to the surgical procedure. However, damage caused by antibodies attacking the organ declined by day nine.
Ultimately, the study concluded when the patient’s family requested it be halted. The researchers emphasized that while this indicates the feasibility of pig lung transplants, significant hurdles remain regarding organ rejection and infection risk. They stressed that more research is essential before this approach can be widely implemented.
Muhammad Mohiudin, a surgeon and researcher at the University of Maryland who previously led a successful pig-heart transplant, pointed out that lungs are particularly challenging to transplant because of their vulnerability to immune system attacks. He regarded this recent study as a “first step” towards exploring the use of xenografts—organs from other species—in human medicine.
Overall, while the study showcased significant advancements, the path forward remains complex and requires further research before it can translate into clinical practices.
