In the News
Role Of Anesthetics In Alzheimer's Disease: Molecular Details Revealed
Inhaled anesthetics commonly used in surgery are more likely to cause the aggregation of Alzheimer percents disease-related plaques in the brain than intravenous anesthetics say University of Pittsburgh School of Medicine researchers in a journal article published in the Jan. 23 issue of Biochemistry. This is the first report using state-of-the-art nuclear magnetic resonance (NMR) spectroscopic technique to explain the detailed molecular mechanism behind the aggregation of amyloid β (Aβ) peptide due to various anesthetics. University Of Chicago Researchers Find Human Brain Still Evolving
Human evolution, Chicago researchers report, is still under way, in what has become our most important organ: the brain. In two related papers published in Science, they show that two genes linked to brain size are rapidly evolving in humans. The researchers looked at variations of microcephalin and ASPM within modern humans, and found for each gene one class of variants has arisen recently and has been spreading rapidly because it is favored by selection. Dust Storms May Carry Bacteria To Japan From China
Bacteria found in soil around Tokyo are not indigenous to the area. A study published in the open access journal Saline Systems reveals a large proportion of salt-loving bacteria in non-saline soil around Tokyo. The researchers suggest that dust storms may have carried the bacteria from their natural habitats in China. Heartbeat And Breathing Cycles
Heartbeat and breathing cycles can become synchronized, a new study shows. Some signs of phase synchrony have been found before, but only in small samples of a dozen or so subjects. By contrast, the study performed by scientists at Bar-Ilan University (Israel), and the Martin-Luther University and the Philipps University (both in Germany), includes 112 healthy subjects of varying ages, men and women, for a variety of sleep stages. Carbon Nanotube Membranes Allow Super-fast Fluid Flow
Membranes made with carbon nanotubes permit a fluid flow of 10,000 to 100,000 times the speed that conventional fluid flow theorywould predict, researchers at the University of Kentucky report in the Nov. 3 issue of Nature. They attribute the speed to the nearly friction-free surface of carbon nanotubes. Americans Trail Chinese In Understanding Another Person's Perspective
People from Western cultures such as the United States are particularly challenged in their ability to understand someone else's point of view because they are part of a culture that encourages individualism, new research at the University of Chicago shows. In contrast, Chinese, who live in a society that encourages a collectivist attitude among its members, are much more adept at determining another person's perspective, according to a new study. Hackers Clone E-Passports
The United States swears RFID tags can secure travelers' documents against forgery. But German experts clone the chips at will, while another group shows how terrorists might build a passport-triggered roadside bomb. Kim Zetter reports from the Black Hat conference in Las Vegas. Switching To Chemistry
Researchers at the Weizmann Institute of Science have demonstrated a new kind of electrical switch, formed of organic molecules, that could be used in the future in nanoscale electronic components. U.S. Food and Drug Administration: Recalls, Market Withdrawals, and Sa
The U.S. Food and Drug Administration (FDA) provides information about "the most significant product actions of the last 60 days, based on the extent of distribution and the degree of health risk. The recalls on the list are mainly Class I [reasonable probability that the use of or exposure to product will cause serious adverse health consequences]."Products include food, drugs, and medical devices. Users may sign up for alerts to stay current. Imaging Pinpoints Brain Regions That 'See The Future'
Using brain imaging, researchers from Washington University in St. Louis have identified several brain regions that are involved in the uniquely human ability to envision future events. The study, to be published in the journal PNAS, provides evidence that memory and future thought are highly interrelated and helps explain why future thought may be impossible without memories. Findings suggest that envisioning the future may be a critical prerequisite for many higher-level planning processes.
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