Biosingularity

Archive for August 2009

Why Willpower Often Fails

Posted by: Derya on: August 7, 2009

People who rely on sheer willpower to help them lose weight, stop smoking, or beat other addictions more often than not end up giving in to temptation, and now new research may help explain why. The study found that people tend to overestimate their ability to resist strong urges, and that those who are most [...]

Creating Artificial Life

Posted by: Derya on: August 7, 2009

Biologist, author and businessman Craig Venter discusses his work mapping and synthesizing genomes. Venter recalls his work mapping the human genome and expands on his current work which includes categorizing new genes and species of microbes from ocean water. Venter also explains how microbial research can be used for metabolic engineering and alternative energy sources.

Mini-magnet test makes things sticky for TB

Posted by: Derya on: August 7, 2009

TUBERCULOSIS can now be diagnosed in just 30 minutes, using magnetic nanoparticles which identify Mycobacterium tuberculosis in sputum, even at very low concentrations. Mini-magnet test makes things sticky for TB – tech – 07 August 2009 – New Scientist.

Nanotube-Powered X-Rays

Posted by: Derya on: August 7, 2009

Tiny electron emitters inside an x-ray generator could improve medical imaging and cancer therapy. Capturing the heart: In a new scanner, carbon nanotubes fire electrons instantly to generate x-rays. This gives sharp, high-resolution pictures, such as this one of a fast-beating mouse heart. Credit: Otto Zhou, University of North Carolina via Technology Review: Nanotube-Powered X-Rays.

Researchers have found a way in mice to convert another type of pancreas cell into the critical insulin-producing beta cells that are lost in those with type I diabetes. The secret ingredient is a single transcription factor, according to the report in the August 7th issue of Cell, a Cell Press journal.

Researchers find key to keeping cells in shape

Posted by: Derya on: August 7, 2009

Yale University researchers have discovered how a protein within most cell membranes helps maintain normal cell size, a breakthrough in basic biology that has implications for a variety of diseases such as sickle cell anemia and disorders of the nervous system.

Beetroot juice boosts stamina, new study shows

Posted by: Derya on: August 7, 2009

Drinking beetroot juice boosts your stamina and could help you exercise for up to 16% longer. A University of Exeter led-study, published today (Thursday 6 August 2009), shows for the first time how the nitrate contained in beetroot juice leads to a reduction in oxygen uptake, making exercise less tiring. The study reveals that drinking [...]

Nanoscale origami from DNA

Posted by: Derya on: August 7, 2009

Scientists at the Technische Universitaet Muenchen (TUM) and Harvard University have thrown the lid off a new toolbox for building nanoscale structures out of DNA, with complex twisting and curving shapes. In the August 7 issue of the journal Science, they report a series of experiments in which they folded DNA, origami-like, into three dimensional objects [...]

That key structure inside cells helps process and package hormones, enzymes, and other substances that allow the body to function normally. The lab-on-a-chip device could lead to a faster and safer method for producing heparin, the widely used anticoagulant or blood thinner, the researchers note.

DNA computation gets logical

Posted by: Derya on: August 5, 2009

Biomolecular computers, made of DNA and other biological molecules, only exist today in a few specialized labs, remote from the regular computer user. Nonetheless, Tom Ran and Shai Kaplan, research students in the lab of Prof. Ehud Shapiro of the Weizmann Institute’s Biological Chemistry, and Computer Science and Applied Mathematics Departments have found a way [...]

The way you eat may affect your risk for breast cancer

Posted by: Derya on: August 5, 2009

How you eat may be just as important as how much you eat, if mice studies are any clue. Cancer researchers have long studied the role of diet on breast cancer risk, but results to date have been mixed. New findings published in Cancer Prevention Research, a journal of the American Association for Cancer Research, suggest [...]

Perceiving touch and your self outside of your body

Posted by: Derya on: August 5, 2009

When you feel you are being touched, usually someone or something is physically touching you and you perceive that your “self” is located in the same place as your body. In new research published in the open-access, peer-reviewed journal PLoS ONE, neuroscientists at the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland, investigated the relationship between bodily self-consciousness [...]

Flasks, beakers and hot plates may soon be a thing of the past in chemistry labs. Instead of handling a few experiments on a bench top, scientists may simply pop a microchip into a computer and instantly run thousands of chemical reactions, with results — literally shrinking the lab down to the size of a thumbnail.

Brain difference in psychopaths identified

Posted by: Derya on: August 4, 2009

Scientists from the Institute of Psychiatry at King’s College London have found differences in the brain which may provide a biological explanation for psychopathy. The results of their study are outlined in the paper ‘Altered connections on the road to psychopathy’, published in Molecular Psychiatry.

Adult gut can generate new neurons

Posted by: Derya on: August 4, 2009

The adult lower digestive tract can be stimulated to add neurons to the intestinal system, according to new mouse research in the August 5 issue of The Journal of Neuroscience. The study shows that drugs similar to the neurotransmitter serotonin increase the production of new neurons in the gut. This is the first research to confirm [...]

Scientists create energy-burning brown fat in mice

Posted by: Derya on: August 1, 2009

Researchers at Dana-Farber Cancer Institute have shown that they can engineer mouse and human cells to produce brown fat, a natural energy-burning type of fat that counteracts obesity. If such a strategy can be developed for use in people, the scientists say, it could open a novel approach to treating obesity and diabetes.


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