In the first study of its kind, a team of researchers led by faculty at the Perelman School of Medicine at the University of Pennsylvania and the Baylor College of Medicine, has analyzed data on the impact of prolonged operational ...
Space Exploration
Jan 7, 2013
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(Phys.org)—Calpain, a calcium-regulated enzyme, is essential to a host of cellular processes, but can cause severe problems in its overactivated state. It has been implicated as a factor in muscular dystrophy, AIDS, Alzheimer's ...
Biochemistry
Dec 27, 2012
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(Phys.org)—Several fatal brain disorders, including Parkinson's disease, are connected by the misfolding of specific proteins into disordered clumps and stable, insoluble fibrils called amyloid. Amyloid fibrils are hard ...
Biochemistry
Nov 19, 2012
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Fifty years ago, British researcher John Gurdon demonstrated that genetic material from non-reproductive, or somatic, cells could be reprogrammed into an embryonic state when transferred into an egg. In 2006, Kyoto University ...
Cell & Microbiology
Nov 15, 2012
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Bioengineered replacements for tendons, ligaments, the meniscus of the knee, and other tissues require re-creation of the exquisite architecture of these tissues in three dimensions. These fibrous, collagen-based tissues ...
Polymers
Aug 7, 2012
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Greening vacant lots may make neighborhood residents feel safer and may be associated with reductions in certain gun crimes, according to a new study from the Perelman School of Medicine at the University of Pennsylvania. ...
Social Sciences
Aug 7, 2012
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Amyloid fibers are protein aggregates associated with numerous neurodegenerative diseases, including Parkinson's disease, for which there are no effective treatments.
Biochemistry
Jun 19, 2012
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(PhysOrg.com) -- A growing body of evidence underscores the importance of human gut bacteria in modulating human health, metabolism, and disease. Yet bacteria are only part of the story. Viruses that infect those bacteria ...
Cell & Microbiology
Mar 19, 2012
1
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(PhysOrg.com) -- The molecular pathway that carries time-of-day signals from the body's internal clock to ultimately guide daily behavior is like a black box, says Amita Sehgal, PhD, the John Herr Musser Professor of Neuroscience ...
Cell & Microbiology
Feb 7, 2012
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Despite what Hollywood would have you believe, not all epidemics involve people suffering from zombie-like symptoms--some can only be uncovered through door-to-door epidemiology and advanced mathematics.
Other
Sep 27, 2011
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