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US surgeons transplant pig kidney into human patient and it’s a success

For the first time, a pig kidney has been transplanted into a human without triggering an immediate rejection by the recipient’s immune system, a potentially key advance that could eventually help alleviate a dire shortage of human organs for transplant.

The procedure done at NYU Langone Health in New York City involved use of a pig whose genes had been altered so that its tissues no longer contained a molecule known to trigger an almost immediate rejection, according to reports.

The recipient was a brain-dead patient with signs of kidney dysfunction whose family consented to the experiment before she was due to be taken off life support, researchers told the Reuters news agency.

For three days, the new kidney was attached to her blood vessels and maintained outside her body, giving researchers access to it.

Test results of the transplanted kidney’s function “looked pretty normal,” said transplant surgeon Dr Robert Montgomery, who led the study.

The kidney made “the amount of urine that you would expect” from a transplanted human kidney, he said, and there was no evidence of the vigorous, early rejection seen when unmodified pig kidneys are transplanted into non-human primates.

The recipient’s abnormal creatinine level – an indicator of poor kidney function – returned to normal after the transplant, Montgomery said.

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