DURHAM, N.C. -- A new explanation for one of nature's most mysterious processes, the transformation of caterpillars into moths or butterflies, might best be described as breathless.
The research shows that a baby moth's respiratory system is fixed in size at each stage of development, which limits its oxygen intake. Sensing it is low on oxygen apparently signals to the insect that it cannot continue to grow without proceeding to the next stage of its development, by molting.
In the 15th century, when Europeans first began moving people and goods across the Atlantic, a microscopic stowaway somehow made its way back, and eventually to the caves and monasteries of Bavaria.
Two UC San Diego chemists have discovered the most naturally variable protein known to date in a bacterium that is a key player in the formation of dental plaque.
ANN ARBOR, Mich.---Skewed skulls may have helped early whales discriminate the direction of sounds in water and are not solely, as previously thought, a later adaptation related to echolocation. University of Michigan researchers report the finding in a paper to be published online in the Proceedings of the National Academy of Sciences during the week of Aug. 22.
In research that will help address a long-running debate and apparent contradiction between short- and long-term evolutionary change, scientists have discovered that although evolution is a constant and sometimes rapid process, the changes that hit and stick tend to take a long time.
Give or take a little, one million years seems to be the magic number.
Researchers at the Joslin Diabetes Center have shown that an enzyme found in the mitochondria of cells is decreased in the skeletal muscle of those with diabetes, a finding that could lead to the development of drugs to boost the activity of this enzyme in an effort to fight the disease.
NEW YORK (EMBARGOED UNTIL: AUGUST 22, 2011, 3:00 PM U.S. EASTERN TIME) – A study in the Proceedings of the National Academy of Sciences (PNAS) documents the success of a Wildlife Conservation Society program that uses an innovative business model to improve rural livelihoods while restoring local wildlife populations.
JUPITER, FL, August 22, 2011 – Working closely with a team of researchers from Duke University, scientists from the Florida campus of The Scripps Research Institute have helped identify a molecular pathway that plays a key role in stress-related damage to the genome, the entirety of an organism's hereditary information.
The new findings, published in the journal Nature on August 21, 2011, could not only explain the development of certain human disorders, they could also offer a potential model for prevention and therapy.
CLEMSON, S.C. — Clemson University population biologist Peter Marko and his colleagues have found that not all certified Chilean sea bass are what they are claimed to be. Some fish sold in stores are not from the fishing grounds certified as sustainable, and some are not Chilean sea bass at all.
Alternative funding for health care in Canada will not result in lower costs nor contribute to financial sustainability, states a commentary in CMAJ (Canadian Medical Association Journal) (pre-embargo link only) http://www.cmaj.ca/site/embargo/cmaj110672.pdf
Recent reports from prominent think tanks have urged such solutions as severe cuts to health care, increased taxes, private health insurance, copayments for publicly funded services as well as other methods of raising funds.
Research out of the University of Cincinnati is revealing new information on how the formation of militaries affects the population of their countries. The examination by Steve Carlton-Ford, professor and head of the UC Department of Sociology, is published in the academic journal, Sociological Studies of Children and Youth, (Emerald Group Publishing Limited) Volume 14.
The study examined three approaches to military organization:
Economic Militarization – Military spending as a proportion of overall national economic activity.
New research has revealed that newly fertilized cells only narrowly avoid degenerating into fatal chaos. At the same time, scientists have discovered that embryos have acquired a mechanism to contain this dangerous instability, a finding that could help biologists unravel other mysteries about the first hours of life.
Contrary to the idea that embryonic cells develop in natural synchrony, they are prone to descend into disarray. Without stabilization, cells develop on different schedules, and many stop developing altogether, which threatens the embryo's survival.
Ongoing research at the Institute of Food Research, which is strategically funded by BBSRC, is exploring the use of virus-produced proteins that destroy bacterial cells to combat potentially dangerous microbial infections. Bacteriophages produce endolysin proteins that specifically target certain bacteria, and IFR has been studying one that destroys Clostridium difficile, a common and dangerous source of hospital-acquired infections.
CHICAGO – Jorge Sobenes is a husband and father who loves to cook for his family. In a nine month period however, he went from enjoying his favorite foods to not being able to eat or drink due to a tightening in his throat and difficulty swallowing. He lost 40 pounds and was desperate for answers. Sobenes was diagnosed with achalasia, a condition where the esophagus is unable to move food into the stomach, and was told he would need surgery. Historically, the procedure requires several incisions in the abdomen in order to access the blocked esophageal pathway.
Patients suffering from an aggressive brain cancer will benefit from the results of a University of Illinois study that could advance the development of targeted gene therapies and improve prognosis.
"We have advanced the understanding of the role of microRNAs on glioblastoma multiforme, a deadly brain cancer, by studying the networks between the microRNAs and their target genes associated with different stages of cancer development and progression," said Kristin Delfino, a U of I doctoral candidate in animal science with a focus in genetics and bioinformatics.