The Pros And Cons Of Stem Cells

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medicine that will do this, they have grown stem cells in labs and then injected them into patients. Scientists have built on the technology for bone marrow transplants and they have been looking at embryonic stem cells and induced pluripotent stem cells, which can both give rise to any type of cell in the body. They both live indefinitely in cultures where the scientists have looked at them, after giving them signaling molecules, and see what type of cells they are. Tissue engineers have been working on patches to repair heart tissues in humans. While in animals, they have been trying to grow whole hearts, livers, and kidneys. This shows that stem cells help animals fix their bodies if they are injured or damaged somehow. Stem cells …show more content…
Since stem cells are undifferentiated, they can grow into other cell forms. This means that the stem cells can be transplanted into the area of the injury. Then the stem cells can replace the nerve cells that have died because of the injury. As the new cells reform in place of the old ones and they will insulate the nerve sheath. The new nerve cells have acted as a bridge across the injury to stimulate regrowth of damaged axons. They also have prevented the spread of the injury by suppressing the damaging inflammation that can occur after …show more content…
In about 1 in 20 cases, it is caused by an inherited genetic problem that affects production of the alpha-synuclein protein; the remaining 95 percent of cases have not had a clear cause. Researchers have used stem cells to grow dopamine-producing nerve cells in the lab so that they can study the disease, especially in those cases where there is a known genetic cause for the condition. Because a single, well-defined type of cell is affected, it may also be possible to treat Parkinson’s by replacing the lost nerve cells with healthy new stem cells. Doctors and scientists have thought cell replacement therapy will work because of the results of transplantation studies done in the 1980-90s. In particular, Swedish, American, and Canadian researchers have transplanted the developing nigral dopamine-producing neurons from human fetuses in animals and human patients with Parkinson’s disease. There have been major improvements with some people, but there have also been cases with lesser success. Parkinson’s disease is not the only medical issue that can be helped with stem cells, recovery from strokes can also be helped with stem cells. This shows that stem

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