|
  
- 帖子
- 1445
- 主题
- 98
- 积分
- 2958
- 注册时间
- 2006-3-9
|
一型移植猪细胞10年仍在发挥作用
10 years on, pig cells still fighting diabetes
• Leigh Dayton
• April 02, 2007
Michael Helyer suspected the pig cells in his abdomen were still alive 10 years after they were injected, because they were occasionally cranking out enough insulin to help control his blood sugar levels.
The effect "would come and go -- that's why I noticed it", said the 51-year-old who was diagnosed with Type I, or juvenile, diabetes at age 22.
He was right, surprising scientists and paving the way for new long-term treatments for diabetes that reduce the need for insulin injections.
"I was astonished," said New Zealand-based diabetes researcher Bob Elliott, founder and medical director of Living Cell Technologies, with headquarters in Melbourne.
He said he expected the transplanted cells to live six months to a year.
According to Professor Elliott, more advanced versions of Mr Helyer's pig cell therapy could be available within two years if planned human trials in New Zealand and Russia are successful.
The trials cannot be run in Australia because animal-to-human transplants (xenotransplants) were halted in 2004 under a five-year moratorium established by the National Health and Medical Research Council.
The NHMRC feared animal diseases could be transplanted along with the tissue.
But Professor Elliott said his firm has side-stepped the problem by breeding a disease-free herd based on pigs isolated for 200 years on the sub-Antarctic Auckland Islands. The animals were originally put ashore by sailors as a living larder.
"This has never been done before," said Professor Elliott. "It's a profound step forward for safe, effective and long-term diabetes control."
(The Australian, April 2 2007) 《澳洲人报》4月2日
[ 本帖最后由 金玲 于 2007-4-2 18:29 编辑 ] |
|