Research Report: Nanoparticles improve survival after blood loss
By Lynne Friedmann
Scientists have used nanoparticles to improve survival after life-threatening blood loss.
Massive blood loss due to battlefield or trauma injuries can cause cardiovascular collapse, also known as hemorrhagic shock. Nanoparticles containing nitric oxide (NO) were infused into the bloodstream of hamsters to help maintain blood circulation and protect viral organs. Increasing the body’s levels of NO gas relaxes blood vessels and regulates blood pressure which counters hemorrhagic shock. Nanoparticle therapy is lightweight and does not require refrigeration; a plus for battlefield and rural field conditions.
The nanomedicine research was undertaken by scientists at UCSD and Albert Einstein College of Medicine who report their findings in the journal Resuscitation. News release at http://bit.ly/fLxLYh
Mammoth undersea mountains discovered
Scientists aboard Scripps Institution of Oceanography’s research vessel Melville are mapping a series of colossal and previously uncharted undersea mountains in remote areas of the South Atlantic Ocean, approximately 1,200 miles southwest of Cape Town, South Africa.
The largest seamount spans some 87 miles across (the approximate distance from San Diego to Long Beach) and rises more than 14,700 feet from the seafloor — higher than California’s Mount Whitney. These undersea mountains were known from satellite data but never before charted at sea.
These particular seamounts are so steep that navigating over them is described by scientists and the research vessel crew as “nerve wracking” as the R/V Melville found itself cruising over 9,840 feet of water to less than 1,640 feet in 15 or 20 minutes. News release at http://bit.ly/feP1C9.
Missing sugar molecule raises risk
Researchers at the UCSD School of Medicine and Rady Children’s Hospital-San Diego say an evolutionary gene mutation that occurred in human millions of years ago and our subsequent inability to produce a specific kind of sugar molecule appears to make people more vulnerable to developing type 2 diabetes, especially if they’re overweight.
The findings appear in The FASEB Journal, a publication of the Federation of American Societies of Experimental Biology. News release at http://bit.ly/dJyCf9
Lynne Friedmann is a science writer based in Solana Beach.
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