Tag Archive: DNA


Animation of the structure of a section of DNA...

ScienceDaily (Mar. 6, 2012) — You might think that the DNA you inherited is one thing that you absolutely can’t do anything about, but in one sense you’d be wrong. Researchers reporting in the March issue of Cell Metabolism, a Cell Press publication, have found that when healthy but inactive men and women exercise for a matter of minutes, it produces a rather immediate change to their DNA. Perhaps even more tantalizing, the study suggests that the caffeine in your morning coffee might also influence muscle in essentially the same way.

The underlying genetic code in human muscle isn’t changed with exercise, but the DNA molecules within those muscles are chemically and structurally altered in very important ways. Those modifications to the DNA at precise locations appear to be early events in the genetic reprogramming of muscle for strength and, ultimately, in the structural and metabolic benefits of exercise.

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Officials at the Food and Drug Administration advised physicians Monday to temporarily stop using Rotarix, a vaccine commonly given to children to protect them against the stomach bug rotavirus, because it is contaminated with traces of a second virus.

The contaminant, called PCV-1, is a DNA virus that infects pigs and other species but is not known to cause illness in humans or any other animals. The virus appears to have come from the cell cultures used to make Rotarix.

“There is no evidence this poses a safety risk,” Margaret A. Hamburg, FDA commissioner, told reporters in a telephone briefing.  read more
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How Terahertz Waves Tear Apart DNA

A new model of the way the THz waves interact with DNA explains how the damage is done and why evidence has been so hard to gather

via Technology Review: Blogs: arXiv blog: How Terahertz Waves Tear Apart DNA – Mozilla Firefox.

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