Engelsk
Summary of stem cell research
04. oktober 2006 af
Ulle87 (Slettet)
Hej .. Jeg har fået til opgave, at lave et resume af teksten 'The promise of stem cell research'.. Jeg er lidt i tvivl om, om jeg har taget for meget med, så vil gerne høre din mening! Teksten findes på: http://edition.cnn.com/2006/TECH/science/04/14/fs.stemcellprofile/index.html
Mit resume:
A CNN Future Summit technology profile
The text is about stem cells, which have the ability to cure and restore other cells in the body, which has been damaged or harmed by accident and disease. The use of stem cells, aren’t new: “The curative component in bone marrow transplantations, which have been used to treat certain blood cancers for more than 40 years”, are CNN Future Summit Nominating Committee Member Alan Colman telling.
Right from the birth, stem cells creates tissues and organs, which makes a human who he is. The goal with researching stem cells is, to heal a range of illnesses and ailments. The cells can develop into 220 cell-types in the human body. As long as an organism is alive, it should be possible to dividing, re-dividing, producing red blood cells, muscle cells or anything else the body needs to keep going.
Many scientists believe that the treatment of strokes, heart disease, cancer and birth defect could benefit from stem cell research, along with Parkinson’s and Alzheimer’s disease which will be a goal to defeat in the future.
The problem is that adults don’t have a lot of stem cells available, and there’s also a difference between stem cells in adults, and those in embryos just days old. Colman explain that each type of stem cell is good for some purposes, and bad for others. Embryonic stem cells have the ability to grow indefinitely in culture, whereas adult stem cells generally can’t do that.
Adult stem cells have though the advantage, that they’re nearer to the end product than the embryonic stem cell is. So Colman think that researchers should research on both areas with support from the public.
The possibilities of stem cell therapy
Some current medicine doesn’t work, however stem cell research promise to help fill gaps. Colman believe that stem cells have uses in diabetes patients, where they have lost the ability to make insulin. He also tells that there are things called mesenchymal stem cells, which can be found in the bone marrow. This can replace cartilage.
Colman believes also, that stem cells can be used at heart patients as well. They’re now using bone marrow stem cells to repair hearts of people who had myocardial infarctions. An example would be Ian Rosenberg, who suffered a heart attach back in 1985. Ian was told, that he only had two and a half month to live in. So he went to a hospital in Germany for treatment, and his heart is fine now.
How stem cells are being used today
Researchers have last year at University of California at Irvine used adult human neural stem cells to treat mouse with spinal injuries. So the concept of using stem cells to repair damage to the spine or nervous system at animals succeeded.
Surgeons in London have been working on using stem cells to treat patients with damage to their nervous system. To make this happen, they’ll take stem cells from the noses of their patients, which will mean theres no chance of rejection. If it will succeed, the cells will patch a broken connection between nerves in the patient’s arms and their spinal cord.
And Dorairajan Balasubramanian, Chairman of the National Task Force on Stem Cell Research and a member of the CNN Future Summit Nominating Committee, has used stem cells to treat patients at L.V. Prasad Eye Institute in Hyderabad. Last year a man called Edward Bailey described to CNN, how he got the sight in his left eye back, by using stem cells.
Challenges and controversies
Colman says that identifying and converting the right stem cells properly to the cells you need is the first task. Then you’ll need to be sure, that the transplanted cell will behave properly and integrates with the neighbouring cells and tissues and doesn’t run amuck.
The embryonic stem cell has become a social issue in some societies. Many religious groups finds the idea of using cells from human embryos unacceptable.
Last year another controversy involving stem cell research erupted, when Hwang Woo-suk , from South Korean faked results in nine of the 11 stem cell lines he claimed to have created. This stunned scientists and others who followed stem cell research. ------ This gives the impression, that all scientists are similarly, scurrilous and prone to fraud. Colman thinks it’s unfair, because most scientists have great integrity and they fairly report every experiment they do and there’s no fraud attempted.
Balasubramanian says, that though there has been a lot of conversations between scientists and the rest of the society about the incident, he think, that scientists should keep doing experiments and research in stem cell therapy and genetics because that is vital.
På forhånd, tak for hjælpen!
Mit resume:
A CNN Future Summit technology profile
The text is about stem cells, which have the ability to cure and restore other cells in the body, which has been damaged or harmed by accident and disease. The use of stem cells, aren’t new: “The curative component in bone marrow transplantations, which have been used to treat certain blood cancers for more than 40 years”, are CNN Future Summit Nominating Committee Member Alan Colman telling.
Right from the birth, stem cells creates tissues and organs, which makes a human who he is. The goal with researching stem cells is, to heal a range of illnesses and ailments. The cells can develop into 220 cell-types in the human body. As long as an organism is alive, it should be possible to dividing, re-dividing, producing red blood cells, muscle cells or anything else the body needs to keep going.
Many scientists believe that the treatment of strokes, heart disease, cancer and birth defect could benefit from stem cell research, along with Parkinson’s and Alzheimer’s disease which will be a goal to defeat in the future.
The problem is that adults don’t have a lot of stem cells available, and there’s also a difference between stem cells in adults, and those in embryos just days old. Colman explain that each type of stem cell is good for some purposes, and bad for others. Embryonic stem cells have the ability to grow indefinitely in culture, whereas adult stem cells generally can’t do that.
Adult stem cells have though the advantage, that they’re nearer to the end product than the embryonic stem cell is. So Colman think that researchers should research on both areas with support from the public.
The possibilities of stem cell therapy
Some current medicine doesn’t work, however stem cell research promise to help fill gaps. Colman believe that stem cells have uses in diabetes patients, where they have lost the ability to make insulin. He also tells that there are things called mesenchymal stem cells, which can be found in the bone marrow. This can replace cartilage.
Colman believes also, that stem cells can be used at heart patients as well. They’re now using bone marrow stem cells to repair hearts of people who had myocardial infarctions. An example would be Ian Rosenberg, who suffered a heart attach back in 1985. Ian was told, that he only had two and a half month to live in. So he went to a hospital in Germany for treatment, and his heart is fine now.
How stem cells are being used today
Researchers have last year at University of California at Irvine used adult human neural stem cells to treat mouse with spinal injuries. So the concept of using stem cells to repair damage to the spine or nervous system at animals succeeded.
Surgeons in London have been working on using stem cells to treat patients with damage to their nervous system. To make this happen, they’ll take stem cells from the noses of their patients, which will mean theres no chance of rejection. If it will succeed, the cells will patch a broken connection between nerves in the patient’s arms and their spinal cord.
And Dorairajan Balasubramanian, Chairman of the National Task Force on Stem Cell Research and a member of the CNN Future Summit Nominating Committee, has used stem cells to treat patients at L.V. Prasad Eye Institute in Hyderabad. Last year a man called Edward Bailey described to CNN, how he got the sight in his left eye back, by using stem cells.
Challenges and controversies
Colman says that identifying and converting the right stem cells properly to the cells you need is the first task. Then you’ll need to be sure, that the transplanted cell will behave properly and integrates with the neighbouring cells and tissues and doesn’t run amuck.
The embryonic stem cell has become a social issue in some societies. Many religious groups finds the idea of using cells from human embryos unacceptable.
Last year another controversy involving stem cell research erupted, when Hwang Woo-suk , from South Korean faked results in nine of the 11 stem cell lines he claimed to have created. This stunned scientists and others who followed stem cell research. ------ This gives the impression, that all scientists are similarly, scurrilous and prone to fraud. Colman thinks it’s unfair, because most scientists have great integrity and they fairly report every experiment they do and there’s no fraud attempted.
Balasubramanian says, that though there has been a lot of conversations between scientists and the rest of the society about the incident, he think, that scientists should keep doing experiments and research in stem cell therapy and genetics because that is vital.
På forhånd, tak for hjælpen!
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