Posts Tagged ‘Health’
Scientists create human cells directly from skin
Two teams of British and Canadian scientists have created human cells directly from the skin of a patient, eliminating the need for embryos.
The results of the investigations of both teams, announced by the journal Nature, are an important step in the search for safe treatments for the replacement of damaged tissue of any part of the body.
Properly handled by the scientists, skin cells take on the properties of stem cells from embryos normally so they can become any tissue in the body.
Previously it was only possible to create these induced pluripotent stem cells (initials in English: iPS) using viruses to insert four genes that perform the reprogramming.
But the modified virus DNA in the cells so that increased the risk of cancer, so the technique was too risky for use in human patients.
Another danger that existed was that the changes caused by genes would lead to developmental abnormalities.
But now, scientists have managed to avoid the use of viruses and remove genes once they have fulfilled their task.
British and Canadian teams were able to insert four genes into a single segment of DNA to carry out the necessary reprogramming and then removed before they could cause damage.
Advances in vaccine cocaine addiction
The study results were published in Archives of General Psychiatry (Archives of General Psychiatry.) The scientists found that 38% of participants failed to reach adequate levels of antibodies to stop experiencing the feeling of euphoria that produces the drug.
The vaccine works by “wrapping” to cocaine so that it has no effects on the brain, heart or other organ, “” this is the first successful controlled trial for a vaccine against cocaine, say scientists.
According to previous studies conducted with animals and humans, high levels of anti-cocaine antibodies in the blood can prevent addicts experience that feeling.
However, the researchers stressed that the vaccine who managed the high level of antibodies, only maintained it for two months, so it would need repeat injections.
Posted in Health Info, Healty Lifestyle | 
Tags: Advances in vaccine, Health, Health Care, Stress | 
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