Posted on 09/19/2007 3:24:00 PM PDT by decimon
A man's testicles might be a source of stem cells to help him fight serious diseases, US scientists have shown.
They extracted early-stage sperm cells from mice, then turned them into cells capable of becoming different tissues.
Writing in Nature, the Weill Cornell Medical College team said their work might lead to treatments for illnesses such as Alzheimer's and diabetes.
However, some doubt has been expressed on the willingness of men to undergo the procedure to extract the cells.
Stem cells are the body's "master cells" that, in theory, can become any type of cell in the body.
Embryo opposition
An obvious source of these is from the human embryo, as unlike adult cells, these have the potential to grow into any tissue type.
However, ethical concerns over the use of embryos in medicine mean that scientists are hunting for a source of easily-harvested adult cells which could be coaxed into any variety of cell.
Stem cells have already been extracted from mouse testicles - however, the New York team is claiming a more reliable way to isolate and develop them, increasing the potential for larger numbers to be produced successfully.
The testicular cells do not need to be genetically "tweaked" to behave more like embryonic stem cells, unlike other "adult stem cells" found elsewhere in the body, say the scientists.
Dr Shahin Rafii, who led the research, said: "It appears that these unique specialized spermatogonial cells could be an easily obtained and manipulated source of stem cells with exactly the same capability to form new tissues that we see in embryonic stem cells.
"For male patients, it could someday mean a readily available source of stem cells that gets around ethical issues linked to embryonic stem cells.
"It also avoids issues linked to tissue transplant rejection, since these 'autologous stem cells' are derived from the patient's own body."
Painful process
He listed several illnesses which he hoped could be tackled using stem cell technology, including Parkinson's Disease, Alzheimer's, stroke, diabetes and even certain cancers.
It is hoped that one day, implanting large quantities of stem cells into tissue damaged by disease could prompt the body to replace it.
Professor Colin McGuckin, a researcher in stem cell biology at the University of Newcastle, said that several research teams around the world were looking into the potential of the testicle as a stem cell source.
He said: "At present, there is an awful lot of interest in this from veterinary circles as a source of stem cells for animal use.
"I can see more problems getting humans to agree to have this done, as it would be a very painful procedure to have them extracted."
Pity the mice.
Okay, just let me say up front, if they're starting a registry, I want on the list. You have to draw a line somewhere.
Painful? as opposed to death?..............
Gee, 'ya think?
A lot of people don't know this, but removing testicles is a major part of Hillary's Health Care program.
Wow - so there is something they’re great for, besides.............
You da Man! For now, at least.
Unfortunately, I can vouch for that.
I worded that so poorly, but I was trying to say I wanted on the opt out list as a joke.
Didn't work very well with Bill.
I would think this would be a 'fair trade' for the protection of life...I mean really, I guess men dont have a problem with whats done with their DNA AFTER it has connected with a woman's DNA...THEN its not connected to them, right?
Sheeesh....
You were joking in saying you would opt out. Got it. :-)
Sissy!
That’s cruel. lol.
Can't think of an appropriate reply.
Two words that should never be uttered in the same sentence
Testicle
Harvest
Yeah. So?
Just get away from me with that 6” 13 guage needle okay...
A Marine would do it with a Kabar.
Let’s hope that the feminists conclude from this that they really do need us after all...
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