Stem cell therapy is a great and ethical way to repair tissue. Stem cell therapy is used extensively. Mostly for repairing damaged tissue. The disorders or diseases are: cardiovascular disorders, autoimmune disorders, diabetes, osteoporosis, severe burns, and spinal cord injuries. Therefore, it can be a beneficial procedure that can change the way we look at science.
Stem cell therapy is used to repair damaged tissues but at potentially harmful risks. With stem cell therapy, cells are used to reproduce healthy cells. According to Ian Murnagham stem cells are injected where the damaged tissues need to be repaired but there is a chance that these cells could rapidly and uncontrollably reproduce, causing a tumor in the patient. Four years after the initial treatment, a boy developed tumors along his spinal cord and brain. The doctors also included that these tumors couldn't have stemmed from the boys own body.
A factoring result of the treatment could be a weakened immune system as well. The white blood cells in a patient are reduced, and while minor colds and easily treatable flux are the most prevalent side-effect of this, the stem cells could get out of control. The patients body isn't ready to fight off any type of infection let alone genetically modified cells, foreign to the body.
Stem cells are still a safe and great discovery. Scientists have discovered a new use for stem cell therapy. They can prolong our lives. They found that our by replacing the old cells with new and young stem cells they can prolong our lives to where we can live up to twice our expected life span. The first test they did using this technique with was with lab rats. They took a mouse that was close to it's final days, and replaced it's cells with newer stem cells from a younger, healthier rat. The test rat lived twice as long as it's expected life span. Proving, that stem cells can be used to replace older, unhealthier, and overused cells to prolong our lives.
This brings up the point though, should scientists try to prolong the lives of organisms by using scientific procedures such as stem cell therapy. Immortality shouldn't be sought after by medical techniques and procedures. According to Craig Hamilton, humans aren't able to live five hundred years. Even if stem cells eventually allow this to be medically achievable, humans wouldn't be able to handle the psychological stress behind being alive that long. The mind would be too overwhelmed with experience and knowledge.
Dr. Aubrey Grey explains using stem cells to live longer wouldn't stop people from aging. A child would still grow and mature into a young adult, and that adult would continue to mature and stem cell therapy can't reverse or stop that. Living an extra four hundred years wouldn't stop aging. Dr. Grey also explains that people, are not interested in living longer if it means not being in good health, they are interested in living out their golden years indefinitely.
That is a valid point. Some people do not want to live for hundreds of years. Some may... M.E. Furph says that the prolong life procedure can only be an example. They can take old cells, and replace them with better cells that have more insulin for diabetes patients.
Scientists have also discovered another use for stem cell therapy. Replacing the damaged Cornea ( damaged as in chemically burned or scratched ). They simply take the Limbal stem cells from the good or undamaged eye, and put in into a petri dish to multiply. Then, they place the multiplied and healthy Limbal stem cells into the damaged eye to repair eye sight.
However, this type of therapy can lead to tumors and other complications( as mentioned before).
Health research funding explains how embryonic stem cell research works. It then goes on to explain how an embryo is destroyed by this type of research. The author argues that our perception of when an organism is a life worth protecting is skewed among person to person. Some believe that the embryos in question are lives that should not be killed.
In this particular field of stem cell research, there has been no new advancements since the 1980's. Research has not been halted since the eighties. Thousands of embryos have been pointlessly destroyed for no scientific advancements. Decades of additional experiments have happened and decades worth of possible lives have been sacrificed for nothing.
Ian Muraghan BSc, Msc, says that stem cells can be used to test new medical drugs. Instead of using animals or humans, they use stem cells in labs to and apply them to the medications to check for defaults or tumor causing side effects.
On the point of tumors, they can be tested to see if they can cause tumors as well. Ian Muraghan also says that they can produce "very accurate results for future use".
"....future use." At this point any kind of stem cell therapy is all talk and the hope of scientists. In fact, any trials are years away and successful human trials are even yawns away after that. Even if this type of therapy was accomplished, it would be completely in practical. Adult stem cells are difficult to harvest and grow and they are not able to be produced in large quantities. It requires a lot of resources and time to produce a decent amount of cells as well as a lot of money. Only the wealthy would be able to actually afford this type of treatment and this would create an even bigger gap between society social classes.
As said before, they have been shown to be a very affective procedure to cure multiple disorders and diseases. Even though they can take awhile to reproduce a new batch of stem cells, the sheer knowledge and discoveries will pay off on it's own. It is better to discover the new possibilities now so that our future generations centuries from now can supply their people with the proper treatment and diagnosis. Stem cell therapy is a great knowledge and or technique to have.
At what risk are these people being treated however? Adult stem cells are unreliable at best and backpack a lot of risks and complications.
Adult stem cells are finite. There is a limited supply of what can be harvested and what can actually be used to treat a patient. The stem cells used on a patient may not even last long enough for the procedure to be worth it. The person may have to go in for treatment multiple times with limited results each time and those results only lasting a short time.
DNA mutation are also much higher in adult stem cells. Cells could be altered at a chemical level changing how the cell functions, leading to complications. The mutation would be completely random; there is no way of telling which cells would mutate and which cells would perform healthily once inside the body.
Moreover, pre-specialization occurs in adult stem cells. Stem cells can't be taken from just anywhere in the body and used to treat an issue somewhere else. The stem cells have to correspond with what is being treated. This makes obtaining an amount of cells that is useable even more complicated, time consuming, and costly.