Science News SciGuru.com |  |
- Revealing Nature's Mathematical Formula for Survival
- Plant Enzyme’s Origins Traced to Non-Enzyme Ancestors
- Georgetown Physician Leads National Resveratrol Study for Alzheimer’s Disease
- How ribosomes override their blockades
- New study discovers powerful function of single protein that controls neurotransmission
| Revealing Nature's Mathematical Formula for Survival Posted: 14 May 2012 07:19 AM PDT Mathematical physics team finds geometric patterns linking structure to function in leaves. The vascular system of a leaf provides its structure and delivers its nutrients. When you light up that vascular structure with some fluorescent dye and view it using time-lapse photography, details begin to emerge that reveal nature's mathematical formula for survival.       |
| Plant Enzyme’s Origins Traced to Non-Enzyme Ancestors Posted: 14 May 2012 07:07 AM PDT As plants began to transition from aquatic habitats to dry land some 500 million years ago, their needs changed. Those primitive ancestors of modern plants were ill-equipped to survive in a dry, sunlight-blasted world. But gradually, they evolved enzymes that let them synthesize new kinds of chemicals to protect them from the threats of their new world, such as the damaging ultraviolet (UV) rays of the sun.    |
| Georgetown Physician Leads National Resveratrol Study for Alzheimer’s Disease Posted: 14 May 2012 04:29 AM PDT A national, phase II clinical trial examining the effects of resveratrol on individuals with mild to moderate dementia due to Alzheimer's disease has begun as more than two dozen academic institutions recruit volunteers in the coming months. R. Scott Turner, M.D., Ph.D., director of Georgetown University Medical Center's Memory Disorders Program, is the lead investigator for the national study.    |
| How ribosomes override their blockades Posted: 14 May 2012 04:12 AM PDT Scientists at Charité – Universitätsmedizin Berlin have succeeded for the first time to document one of the key steps during the restoration process that rescues blocked bacterial ribosomes. The exact findings about the composition and the way a ribosome works—one of the main targets for antibacterial drugs—are of great meaning in the continued research on antibiotics. The study is published in the current issue of the scientific journal Nature.    |
| New study discovers powerful function of single protein that controls neurotransmission Posted: 13 May 2012 06:44 PM PDT Scientists at Weill Cornell Medical College have discovered that the single protein -- alpha 2 delta -- exerts a spigot-like function, controlling the volume of neurotransmitters and other chemicals that flow between the synapses of brain neurons. The study, published online in Nature, shows how brain cells talk to each other through these signals, relaying thoughts, feelings and action, and this powerful molecule plays a crucial role in regulating effective communication.    |
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