US Researchers Announce Another Pig to Human Transplant

2022-01-26

00:00 / 00:00
复读宝 RABC v8.0beta 复读机按钮使用说明
播放/暂停
停止
播放时:倒退3秒/复读时:回退AB段
播放时:快进3秒/复读时:前进AB段
拖动:改变速度/点击:恢复正常速度1.0
拖动改变复读暂停时间
点击:复读最近5秒/拖动:改变复读次数
设置A点
设置B点
取消复读并清除AB点
播放一行
停止播放
后退一行
前进一行
复读一行
复读多行
变速复读一行
变速复读多行
LRC
TXT
大字
小字
滚动
全页
1
  • American doctors have released details about another operation involving the transplant of pig organs into humans.
  • 2
  • A medical team from the University of Alabama at Birmingham said it had successfully transplanted pig kidneys into a brain-dead human.
  • 3
  • The operation took place last September, but was first reported January 20.
  • 4
  • Similar operations have taken place in recent months.
  • 5
  • In October, doctors at New York University temporarily attached a pig kidney to blood vessels outside the body of a brain-dead human.
  • 6
  • And earlier this month, doctors at University of Maryland School of Medicine in Baltimore transplanted a pig heart into a living human patient.
  • 7
  • In all of the operations, doctors used organs from genetically modified pigs provided by Virginia-based medical company Revivicor.
  • 8
  • The latest experiment in Alabama was performed on 57-year-old Jim Parsons, who was declared brain-dead after being injured in a motorcycle accident.
  • 9
  • His family donated his body to science.
  • 10
  • For a little more than three days -- until the man's body was removed from life support -- the two pig kidneys survived with no signs of immediate rejection, the medical team reported.
  • 11
  • The results were recently published in a study in the American Journal of Transplantation.
  • 12
  • Dr. Jayme Locke of the University of Alabama at Birmingham led the new study.
  • 13
  • She told The Associated Press the experiment marks the beginning of a planned series of pig kidney transplants.
  • 14
  • "The organ shortage is in fact an unmitigated crisis, and we've never had a real solution to it," Locke said.
  • 15
  • She added that an important finding of the latest operation helped answer a major question:
  • 16
  • Could the pig kidney blood vessels survive the force of human blood pressure?
  • 17
  • She said the operation proved that the answer was yes.
  • 18
  • One kidney was damaged during removal from the pig and did not work effectively, the team reported.
  • 19
  • But the other quickly started producing urine as a kidney is supposed to.
  • 20
  • Locke said no pig viruses were passed on to the human, and no pig cells were found in the man's bloodstream.
  • 21
  • She added that the latest experiment showed that brain-dead bodies can serve as much-needed human models to test out possible new treatments.
  • 22
  • In the donor pigs, scientists removed several genes linked to organ rejection.
  • 23
  • They also removed another gene in an effort to prevent too much growth of pig heart tissue.
  • 24
  • Dr. Robert Montgomery has led similar experiments at New York University's Langone Health in New York City.
  • 25
  • He told the AP that scientists still have a lot to learn about how long pig organs survive, and how best to genetically change them.
  • 26
  • "I think different organs will require different genetic modifications," he said.
  • 27
  • Organ donor organizations estimate there are about 110,000 Americans currently waiting for an organ transplant.
  • 28
  • And more than 6,000 patients die each year before getting an organ, reports organdonor.gov.
  • 29
  • I'm Bryan Lynn.
  • 1
  • American doctors have released details about another operation involving the transplant of pig organs into humans.
  • 2
  • A medical team from the University of Alabama at Birmingham said it had successfully transplanted pig kidneys into a brain-dead human. The operation took place last September, but was first reported January 20.
  • 3
  • Similar operations have taken place in recent months.
  • 4
  • In October, doctors at New York University temporarily attached a pig kidney to blood vessels outside the body of a brain-dead human. And earlier this month, doctors at University of Maryland School of Medicine in Baltimore transplanted a pig heart into a living human patient.
  • 5
  • In all of the operations, doctors used organs from genetically modified pigs provided by Virginia-based medical company Revivicor.
  • 6
  • The latest experiment in Alabama was performed on 57-year-old Jim Parsons, who was declared brain-dead after being injured in a motorcycle accident. His family donated his body to science.
  • 7
  • For a little more than three days -- until the man's body was removed from life support -- the two pig kidneys survived with no signs of immediate rejection, the medical team reported. The results were recently published in a study in the American Journal of Transplantation.
  • 8
  • Dr. Jayme Locke of the University of Alabama at Birmingham led the new study. She told The Associated Press the experiment marks the beginning of a planned series of pig kidney transplants.
  • 9
  • "The organ shortage is in fact an unmitigated crisis, and we've never had a real solution to it," Locke said.
  • 10
  • She added that an important finding of the latest operation helped answer a major question: Could the pig kidney blood vessels survive the force of human blood pressure? She said the operation proved that the answer was yes.
  • 11
  • One kidney was damaged during removal from the pig and did not work effectively, the team reported. But the other quickly started producing urine as a kidney is supposed to.
  • 12
  • Locke said no pig viruses were passed on to the human, and no pig cells were found in the man's bloodstream. She added that the latest experiment showed that brain-dead bodies can serve as much-needed human models to test out possible new treatments.
  • 13
  • In the donor pigs, scientists removed several genes linked to organ rejection. They also removed another gene in an effort to prevent too much growth of pig heart tissue.
  • 14
  • Dr. Robert Montgomery has led similar experiments at New York University's Langone Health in New York City. He told the AP that scientists still have a lot to learn about how long pig organs survive, and how best to genetically change them. "I think different organs will require different genetic modifications," he said.
  • 15
  • Organ donor organizations estimate there are about 110,000 Americans currently waiting for an organ transplant. And more than 6,000 patients die each year before getting an organ, reports organdonor.gov.
  • 16
  • I'm Bryan Lynn.
  • 17
  • The Associated Press reported this story. Bryan Lynn adapted the report for VOA Learning English.
  • 18
  • _____________________________________________
  • 19
  • Words in This Story
  • 20
  • transplant - v. to perform a medical operation in which an organ or other part that has been removed from the body of one person is put into the body of another person
  • 21
  • modify - v. to change something in order to improve it
  • 22
  • unmitigated - adj. complete, often describing something bad or unsuccessful
  • 23
  • urine - n. a yellowish liquid waste that is released from the body
  • 24
  • We want to hear from you. Write to us in the Comments section, and visit our Facebook page.