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Stem Cell Informative Speech

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Stem cells are undifferentiated cells that can become any type of cell that the body needs. Neural stem cells are cells that will turn into neurons, astrocytes, and oligodendrocytes. Astrocytes are cells in the brain that assist in controlling the central nervous system, and oligodendrocytes safeguard nerve fibers. Neural stem cells have recently been tested to treat brain disorders and neurological diseases as they can help reconstruct brain tissue that has been damaged. There are many different types of stem cells that can be given to patients; adult, embryonic, and fetal. Adult stem cells are stem cells collected from adults and given to patients. Embryonic stem cells are collected from embryos that are four or five days old, and can become …show more content…
Dopamine sends messages to the parts of the brain that regulate motor skills and coordination. Researchers in Sweden first performed the transplantation of stem cells from aborted fetuses into the brain. The brain has a very complex circuity to it, and scientists did not know where to place the cell grafts to ensure they would have the most benefits to the patient. But, studies have shown that grafting fetal tissue onto the brain made significant improvements to Parkinson’s disease. After getting fetal tissue grafts, two patients that had needed round-the-clock care before were able to live on their own again. While this study was being done in Sweden, a team comprised of American and Swedish scientists discovered the process of neurogenesis. Neurogenesis is the process of the human brain forming new neurons through cells continuously dividing and reproducing. This discovery brought up the question of using the fact that the brain could regenerate parts of itself that had been damaged to treat Alzheimer’s and Parkinson’s. Scientists then attempted to figure out how neurons were made, and how to utilize them to repair cells that have been damaged. Specifically, the scientists studied neural embryonic stem cells because they can be persuaded with chemicals into creating neurons that have many different functions, and they drift to areas of the brain that they are needed most. The use of embryonic stem cells was highly controversial, at the same time Japanese scientists discovered how to reprogram cells such as skin cells to act as embryonic stem cells. These cells are called induced pluripotent cells which are formed by alluring cells to turn on genes in them that are usually only found in embryonic stem

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