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A family desperate to save a child from a lethal brain disease sought highly experimental injections of fetal stem cells—injections that triggered tumors in the boy's brain and spinal cord,
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Researchers in China met with a disastrous result. Fetal tissue injected into a patient's brain produced temporary improvement, but within two years the patient developed a brain tumor and died. An autopsy revealed that the fetal cells had taken root, but had then metamorphed into other types of human tissue - hair, skin and bone. These grew into the tumor, which killed the patient.
A devastating result occurred at Columbia University's College of Physicians and Surgeons, and was published in the New England Journal of Medicine.
In some of the patients, the implanted embryonic cells apparently grew too well, churning out so much of a chemical that controls movement that they writhed and jerked uncontrollably. Dr. Paul E. Greene called the uncontrollable movements developed by some patients as "absolutely devastating." He said, "They chew constantly, their fingers go up and down, their writs flex and distend. It's a real nightmare. And we can't selectively turn it off. No more fetal transplants. We are absolutely and adamantly convinced that this should be considered for research only."
Diane Irving, Ph.D., a former professor of biology at Georgetown University and former biochemist with the National Cancer Institute, said, "I have argued that adult stem cells are better because they are closer to the stage of differentiation than embryonic or fetal cells - therefore they do not have as long a distance to travel differentiation-wise as the younger cells. Therefore there is far less of a chance for genetic errors to be accumulated in the implanted cells and less side effects for the patient to deal with."
In stark contrast to the failures of embryonic stem cell research, the future looks very promising for treatment with adult stem cells.
Originally posted by Uniceft17
The key word here is EXPERIMENTAL.
They knew the risks going in. That may sound harsh, but it's true.
I don't know who you are, but I can tell you that you don't know a thing about what you're talking about, judging from what you said.