US surgeons who transplanted a genetically modified pig kidney into a brain-dead patient announced Thursday they had ended their experiment after a record-breaking 61 days.

The latest experimental procedure is part of a growing field of research aimed at advancing cross-species transplants, mainly testing the technique on bodies that have been donated for science.

There are more than 103,000 people waiting for organ transplants in the United States, 88,000 of whom need kidneys.

“We have learned a great deal throughout these past two months of close observation and analysis, and there is great reason to be hopeful for the future,” said Robert Montgomery, director of the New York University Langone Transplant Institute, who led the surgery in July.

It was the fifth so-called xenotransplant performed by Montgomery, who also carried out the world’s first genetically modified pig kidney transplant in September 2021.

Tissue collected during the study indicated a mild rejection process had begun, requiring intensification of immunosuppression medication.

By “knocking out” the gene responsible for a biomolecule called alpha-gal — a prime target for roving human antibodies — the NYU Langone team were able to stop immediate rejection.

The donor pig in this experiment came from a herd cultivated by Virginia-based biotech company Revivicor.

The herd has also been approved by the Food and Drug Administration as a source of meat for people with hypersensitivity to the alpha-gal molecule, an allergy caused by some tick bites.

These pigs are bred, not cloned, meaning the process can be more easily scaled.

Early xenotransplantation research focused on harvesting organs from primates — for example, a baboon heart was transplanted into a newborn known as “Baby Fae” in 1984, but she survived only 20 days.

Current efforts focus on pigs, which are thought to be ideal donors for humans because of their organ size, their rapid growth and large litters, and the fact they are already raised as a food source.

In January 2022, surgeons at the University of Maryland Medical School carried out the world’s first pig-to-human transplant on a living patient — this time involving a heart.

He died two months after the milestone, with the presence of porcine cytomegalovirus in the organ later blamed.

Last week, Chinese scientists published a paper showing they had succeeded in hybrid pig-human kidneys in pig embryos, an alternative approach that also has the potential to one day help address organ donation shortages.

But the development raised ethical issues — especially since some human cells were also found in the pigs’ brains, experts said.

(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)

Source: NDTV

Previous articlePolice arrest two in an attempt to commit robbery
Next articleNEWMONT AKYEM MINES PAYS A COURTESY CALL ON OKUMAHENE OSEADEEYO DR. FRIMPONG MANSO IV
Ghana, Accra, Mankessim. Ishmael Awudi is a journalist and a media entrepreneur. He founded Ghana News Guide. GNG is an online news platform that focuses on news stories within Ghana and across the world on a regular basis. The primary objective of GNG is to ensure that news stories are reported as they are, with no filters applied. In its news coverage, GNG strives for professionalism.He also founded Wetour, a local tourism agency aimed at boosting the tourism space in Ghana with the youth at focus.Ishmael works with The Afriam Network as the head of business development. Afriam Network is a global company based in Ghana, Accra that offers a variety of services such as Customer Service, Debt Collection, Order Taking, Lead Generation, Customer Surveys, and Telesales. Ishmael holds a bachelor's degree from the Ghana Institute of Journalism. He won the best online media personality award in 2019 at level 300.He has contributed to several media houses in Ghana including.

LEAVE A REPLY

Please enter your comment!
Please enter your name here