Skip to comments.ADULT Cell Transplants Restore Vision in Mice
Posted on 11/09/2006 6:51:31 PM PST by Coleus
click here to read article
Actual development is directed towards harvesting the patient's own blood marrow, processing blood marrow in the operating room to extract the patient's own stem cells. These cells will be injected into the target joint. This all will take place in one procedure within the confines of the O.R.
Any clinical material either entering or leaving the O.R., triggers massive regulatory requirements. A device entering the O.R. that rearranges the patient's own cells is to the FDA only a device, which incurs a mere fraction of the regulatory burden.
"So this is an cure/therapy with embryonic stem cells?
If so, wow!"
No...here is the important factoid from the article....
"In the experiment, his team harvested these photoreceptor precursor cells from the retinas of newborn mice, whose eyes were still developing."
These were not embryonic stem cells.
"The above title has the word "ADULT" when in fact the cells were not taken from an adult nor are they adult stem cells. Seems the poster wants to imply something that is not true."
The term "adult stem cells" does not mean the cells have to come from an adult.
The term is used to refer to sources of stem cells that do not come from embryos.
Lately however, I've noticed that umbilical cord cells are being referred to as "cord cells" - but I've also seen them be referred to as adult stem cells as well.
The cells in this experiment did not come from an embryonic source.
"I just wanted to be fair and let one of the forum's ESC promoters
gloat...if indeed some ESCs had finally been tamed."
If cancerous tumors produced by embryonic stem cells don't tame them, I don't know what will.
--Wikipedia's definition seems to be leading you to believe that embryonic and adult stem cells are identical in form and nature. They are not.--
You keep making statements about me that are incorrect. Please stay with the facts.
-The cells in this experiment did not come from an embryonic source.--
They are not adult stem cells. Over and out.
"They are not adult stem cells. Over and out."
According to you.
Somehow I think I'll rely on the scientists definitions.
""They are not adult stem cells. Over and out."
I found this site gave helpful info...
The article posted for this thread suggests that stem cells later reach a stage where they have "committed" themselves to particular type of growth.
Is this what you are disputing? That once the cells became receptive to light they no longer fit the definition?
Correct. Once cells have 'differentiated' they are no longer stem cells. The cells in the title article are no longer stem cells. In fact, the authors mention that they will need a source for these cells from humans and they may possibly use either embryonic or adult stem cells for that source depending on future testing.
Please read these few sentences from the second paragraph:
"We think this is a major breakthrough because it shows what can be achieved," said study lead researcher Dr. Robert MacLaren, a consultant vitreoretinal surgeon at Moorfields Eye Hospital and a clinician scientist at the University of London, in England. The finding also gets around the thorny ethical question of using embryonic stem cells. In fact, MacLaren said, "we do not want embryonic stem cells because they are too undifferentiated."
So, UpAllNight, are you saying that the vitreoretinal surgeon is wrong?
By the way we started planting Coleus all over our yards a year ago, but I didn't know that's what it was named.
We've got one that's deep red almost burgundy. And I just learned you can snap a branch off and plant it and it will grow.
Nice going, Coleus.
--So, UpAllNight, are you saying that the vitreoretinal surgeon is wrong?--
No. You are confused. Read more from the surgeon. He says that it may soon be possible to grow the RETINAL CELLS from adult stem cells or embryonic stem cells. They are NOT adult stem cells. They are RETINAL CELLS!!!!!!!!!''
--It's not only wrong but a waste of our money.--
Many said that about the airplane and our military. History has proven them wrong.
It's a black and white, right and wrong, moral absolute thing.
I'm guessing that's where we differ?
--It's wrong because life and personhood begins at conception and we should not create and kill embryos for their parts--
Please insert 'some believe' into your above statement.
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