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時間:2022-10-17 來源:本站 點擊:258次

鈦合金板廠家

 
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'Historic': US surgeons successfully implant pig heart in human******

AFP。

This handout photo released by the University of Maryland School of Medicine on Monday shows surgeons performing a transplant of a heart from a genetically modified pig to patient David Bennett, in Baltimore, Maryland, last Friday.。

Surgeons in the United States have successfully implanted a heart from a genetically modified pig in a 57-year-old man, a medical first that could one day help solve the chronic shortage of organ donations.。

The "historic" procedure took place last Friday, the University of Maryland Medical School said in a statement on Monday. While the patient's prognosis is far from certain, it represents a major milestone for animal to human transplantation.。

The patient, David Bennett, had been deemed ineligible for human transplant – a decision that is often taken when the recipient has very poor underlying health.。

He is now recovering and being carefully monitored to determine how the new organ performs.。

"It was either die or do this transplant. I want to live. I know it's a shot in the dark, but it's my last choice," the Maryland resident said a day before the surgery.。

Bennett, who has spent the last several months bedridden on a heart-lung bypass machine, added: "I look forward to getting out of bed after I recover."

The Food and Drug Administration granted emergency authorization for the surgery on New Year's Eve, as a last-ditch effort for a patient who was unsuitable for conventional transplant. "This was a breakthrough surgery and brings us one step closer to solving the organ shortage crisis," said Bartley Griffith, who surgically transplanted the pig heart.。

"We are proceeding cautiously, but we are also optimistic that this first-in-the-world surgery will provide an important new option for patients in the future."

AFP。

Surgeon Dr. Bartley Griffith (L) with patient David Bennett, who received a heart implant from a genetically modified pig, in Baltimore, Maryland.。

Muhammad Mohiuddin, who co-founded the university's cardiac xenotransplantation program, added the surgery was the culmination of years of research, involving pig-to-baboon transplants, with survival times that exceeded nine months.。

"The successful procedure provided valuable information to help the medical community improve this potentially life-saving method in future patients," he said.。

Bennett's donor pig belonged to a herd that had undergone genetic editing procedures.。

Three genes that would have led to rejection of pig organs by humans were "knocked out," as was a gene that would have led to excessive growth of pig heart tissue. Six human genes responsible for human acceptance were inserted into the genome, for a total of 10 unique gene edits.。

The editing was performed by Virginia-based biotech firm Revivicor, which also supplied the pig used in a breakthrough kidney transplant on a brain dead patient in New York in October.。

But while that surgery was purely a proof-of-concept experiment, and the kidney was connected outside the patient's body, the new surgery is intended to save a person's life.。

The donated organ was kept in an organ-preservation machine ahead of the surgery, and the team also used an experimental new drug made by Kiniksa Pharmaceuticals along with conventional anti-rejection drugs to suppress the immune system.。

About 110,000 Americans are currently waiting for an organ transplant, and more than 6,000 patients die each year before getting one, according to official figures.。

To meet demand, doctors have long been interested in so-called xenotransplantation, or cross-species organ donation, with experiments tracing back to the 17th century.。

 
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4.21日运 ******

原标题:4.21日运 | 哪些星座爱情甜蜜桃花不断度过浪漫的一天?

今天是4月21日星期日

金星进入白羊座

是情感冲动的一天

白羊宝宝今日工作上的人际关系特别复杂,提防朋友圈里的小人和烂桃花。

幸运数字

白色

8

双子座

金牛宝宝今日感觉你的领导不是很正派,言语虚花不实际。部分人有出行出差安排。

幸运颜色

幸运数字

贵人星座

深蓝色

9

金牛座

双子宝宝今日比较关注金钱收入,不过最近财运都不顺。部分人不利出行,出门遇到坑货概率高。

幸运颜色

幸运数字

贵人星座

粉蓝色

9

处女座

巨蟹宝宝今日可能有些烂桃花追你,对方并非单身。部分人不宜投资借贷。

幸运颜色

幸运数字

贵人星座

黑色

3

双鱼座

狮子宝宝今日感情关系复杂,小心三角恋,烂桃花。工作上比较卖力,但是防止有人抢夺你的资源和利益。

幸运颜色

幸运数字

贵人星座

银白色

1

双子座

处女宝宝今日担心被坑,注意意外伤害,部分人事业发展遇到阻碍。

幸运颜色

幸运数字

贵人星座

奶绿色

9

水瓶座

天秤宝宝今日部分人有一些暧昧的地下恋情,也许是场网恋;部分人在家里能舒服的躺吃。

幸运颜色

幸运数字

贵人星座

灰色

9

白羊座

天蝎宝宝今日会想要好好学习;部分人身体不适易上火爆痘,注意排毒。

幸运颜色

幸运数字

贵人星座

草绿色

3

金牛座

射手宝宝今日思想上容易动心暧昧,不要搞烂桃花影响家庭。朋友圈里有机会结识高端的行业大佬。

幸运颜色

幸运数字

贵人星座

月白色

3

双鱼座

摩羯宝宝今日有财运不错,也有兼职收入或者偏财。有些暧昧的想法,谨防烂桃花。

幸运颜色

幸运数字

贵人星座

白色

5

水瓶座

水瓶宝宝今日会结识一些行业大佬等体面的人物,内心活动比较多思想对未来计划考虑的长久,部分人小心被尖锐物品割伤。

幸运颜色

幸运数字

贵人星座

白色

7

摩羯座

双鱼宝宝今日做交易贸易方面容易得财,有储存钱财的想法。外出学习交流中有偶遇桃花运,对方并非单身。

幸运颜色

幸运数字

贵人星座

咖啡色

3

处女座


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