ScienceDaily: Top News |
- Mechanisms cells use to remove bits of RNA from DNA strands
- New ADHD gene study points to defects in brain signaling pathways
- Global carbon emissions reach record 10 billion tons, threatening 2 degree target
| Mechanisms cells use to remove bits of RNA from DNA strands Posted: 04 Dec 2011 11:46 AM PST When RNA component units called ribonucleotides become embedded in genomic DNA, they can cause problems for cells, but not much is known about the fate of these ribonucleotides. A new study identifies two mechanisms cells use to recognize and remove ribonucleotides embedded in genomic DNA, called RNases H and the mismatch repair system. |
| New ADHD gene study points to defects in brain signaling pathways Posted: 04 Dec 2011 11:46 AM PST Pediatric researchers analyzing genetic influences in attention-deficit/hyperactivity disorder have found alterations in specific genes involved in important brain signaling pathways. The study raises the possibility that drugs acting on those pathways might offer a new treatment option for patients with ADHD who have those gene variants -- potentially, half a million US children. |
| Global carbon emissions reach record 10 billion tons, threatening 2 degree target Posted: 04 Dec 2011 11:46 AM PST Global carbon dioxide emissions from burning fossil fuels have increased by 49 percent in the last two decades, according to the latest figures by an international team of scientists. |
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