Complete working kidneys have been grown in mice using stem cells derived from human and pig fetuses. If the feat can be repeated in humans, it will allow doctors to replace damaged organs without the need for a donor.The Israeli team, who used three-month-old mice as recipients for the growing kidneys, were able to avoid immune rejection by using embryonic stem cells. The developing kidney takes time to acquire 'antigen presenting cells' which are recognised by the host immune system as foreign.Embryonic stem cells are also able to adapt to their host, reducing the chance that they will be rejected later in development, says Camillo Ricordi, University of Miami, who works on transplanting islet cells into the pancreas to cure type I diabetes."Our data pinpoint a window ... that may be optimal for transplantation in humans," say the researchers in their paper in Nature Medicine. If the cells are too young, they do not develop into all the necessary cell types. But if taken too late, the developing kidney will be rejected.The kidneys functioned well enough to produce dilute urine. But the organs did not connect up with the host's excretory system. Instead, the researchers, led by Yair Reisner at the Weizmann Institute of Science in Rehovot, Israel, connected a catheter directly into the developing organ. If the technique were used on patients, surgery would be required to connect up the developing kidney.
Actually I found it...
Quote from: hyperlite on June 14, 2006, 06:47:06 PMActually I found it... SHARING IS GOOD!
Quote from: Epoman on June 14, 2006, 07:40:27 PMQuote from: hyperlite on June 14, 2006, 06:47:06 PMActually I found it... SHARING IS GOOD!http://www.newscientist.com/article.ns?id=dn3216 Google is your friend
No one can afford what we have now. "Epogen" for example. Why do more research when no one can afford it anyway.Notice "Private Industry" is funding it? That is not because they care for "mankind." Remember ENRON??
I thought you were a conservative? What's wrong with free-enterprise finding medical solutions. Monopolies are never good, and EPO has been a perfect example of that. But there will soon be competition for the "EPO" market. And competition usually brings down the price.
If that is true then why is dialysis so expensive and keeps going up. It's been around since 1961 and there is competition.
The government can pay for it with the 10 million (or was it billion?) they had left over from the budget that they have stuffed in a draw for a rainy day.
I dont see a problem with using embryos, as long as the woman who owns them is ok with it. After all its not a life, its just cells. If its going to save lives or make them better Im all for it.
Italian stem cell researchers make kidney repair breakthroughTWO TEAMS OF ITALIAN SCIENTISTS HAVE MADE important advances in stem cell research that could pave the way for new kidney disease treatments. A Florence, Italy team, led by top immunologist Sergio Romagnani, identified kidney stem cells that can help damaged kidneys repair themselves.“Chronic renal diseases and terminal renal insufficiency are viewed as the medical emergency of the new century,” Romagnani told a press conference after the publication of his team’s findings in the Journal of the American Society of Nephrology. “This is particularly important because the drugs we currently have are only able to slow down kidney damage.”In mice affected by kidney degeneration, Romagnani explained, the stem cells proved effective in repairing the damaged organs. The researchers say the cells appear able to turn into an array of other body cells. The cells can be cultivated in the lab so as to “multi-differentiate” into other types of cells: bone cells, adipose ( fatty tissue) cells, and even nerve cells.The discovery was made using stem cells from adults, a considerable achievement as researchers are looking for alternatives to embryonic research. Stem cell research has been hindered in the U.S., as President Bush vetoed a bill that would have provided federal funds, citing objections to embryonic research. However, the research has continued in other countries, often with government assistance.