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Unlike humans, bears seem to recover from bone loss caused by inactivity
Wild black bears may hold some secrets to preserving bone in humans.
Researchers at Penn State Milton S. Hershey Medical Center and Michigan Technological University recently studied the animal’s unique ability to rebound from significant bone loss suffered each year during hibernation. Their study, published in the March 2003 issue of Clinical Orthopedics and Related Research, shows that wild black bea
Mutants from a lowly weed. That’s where many solutions to maladies – from salt stress in plants to HIV in humans – may lie in wait for scientists to discover.
“I look for mutants. I take a sick plant and find out what’s wrong,” said Dr. Hisashi Koiwa, Texas Agricultural Experiment Station horticulturist.
It’s the Arabidopsis plant, a common weed, that attracts Koiwa and other researchers because of its simple genetic makeup. Scientists have looked at every nook and cranny of the
Mathematical models have given physicists a new look at DNA’s chemical counterpart, RNA.
The models – showing that RNA behaves differently depending on the temperature of its environment – may help biologists better understand how life evolved on Earth.
The models suggest that high temperatures give twisted strands of RNA the flexibility to fold into many different shapes, while low temperatures cause it to collapse into a single shape.
Ralf Bundschuh, assistant pro
Defects in a protein called alphaV beta3 ntegrin appear to contribute to the development of osteoporosis, and these effects can be reversed by enhancing a protein called macrophage-colony-stimulating factor (M-CSF), according to research at Washington University School of Medicine in St. Louis.
The study appears in the first March issue of the Journal of Clinical Investigation and is published online March 4.
“Because of our previous research with these proteins, new drugs already
Concern is rising among governments worldwide about electronic wastes — discarded computers, televisions, cell phones, audio equipment and batteries — leaching lead and other substances that may seep into groundwater supplies.
Just one color computer monitor or television can contain up to eight pounds of lead. Consider that amount in light of the estimated 12 million tons of “e-wastes” that the U.S. Environmental Protection Agency estimates may soon be dumped into American landfills.
Genomic rearrangements discovered using DNA microarrays are expected to reveal genetic regions important to human health
Mountain View, CA ¾ March 3, 2003 ¾ Perlegen Sciences, Inc. today announced the publication of a scientific paper in the latest issue of the peer-reviewed journal Genome Research. The paper, “Genomic DNA insertions and deletions occur frequently between humans and nonhuman primates,” describes novel findings suggesting that genomic rearrangements, not single base pa