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Category: biotech/medical – Page 2499

According to a new study, aging hearts might find a new lease on life. Researchers have demonstrated that stem cells taken from young rats and given to aged rats rejuvenated their hearts, making them functionally younger in a number of ways.

Young at heart

The new study published in the European Heart Journal investigated the effects of cardiac stem cells on the function and structure of aged hearts[1]. There have been previous experiments using cardiosphere-derived cells (CDCs) that have delivered promising results, but they have never been tested in relation to aging.

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Children with peanut allergies could finally overcome the life-threatening reaction for up to four years, Australian researchers say.

Following a major breakthrough that could lead to a cure, the small clinical trial found two-thirds of children who were given an experimental immunotherapy treatment were rid of their allergy.

The kids with peanut allergies were given a probiotic treatment called lactobacillus rhamnosus, with a peanut protein, once daily for 18 months.

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Honey bees really are tiny hardworking superheroes of the insect world — not only do they keep our agriculture going by pollinating many of our crops, but they also produce a myriad of beneficial substances, like honey and beeswax.

For thousands of years honey has been prized for its topical antiseptic properties. But now researchers have discovered that its lesser-known cousin, royal jelly, has special molecules that speed up wound healing.

Royal jelly is the superfood worker bees secrete and feed all their larvae, especially the queen bees. While queens are developing, they basically float in a pool of this stuff, and humans have figured out how to stimulate queen larva production to then harvest the royal jelly.

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In a major step towards creating a tricorder, University of Illinois at Urbana-Champaign researchers have invented a device that allows smartphones to perform the kinds of lab-grade medical diagnostic tests that previously had to be done on large and expensive instruments.

The device, called a spectral transmission-reflectance-intensity (TRI)-Analyzer, plugs into a smartphone and is able to run tests on a patient’s blood, urine, or saliva as reliably as clinic-based instruments that cost thousands of dollars. The researchers say their TRI Analyzer costs only $550.

“Our TRI Analyzer is like the Swiss Army knife of biosensing,” said Prof. Brian Cunningham, the Donald Biggar Willett Professor of Engineering and director of the Micro + Nanotechnology Lab at Illinois.

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Researchers at The Ohio State University Wexner Medical Center and Ohio State’s College of Engineering have developed a new technology, Tissue Nanotransfection (TNT), that can generate any cell type of interest for treatment within the patient’s own body. This technology may be used to repair injured tissue or restore function of aging tissue, including organs, blood vessels and nerve cells.

Results of the study published in the journal Nature Nanotechnology.

“By using our novel nanochip technology, injured or compromised organs can be replaced. We have shown that skin is a fertile land where we can grow the elements of any organ that is declining,” said Dr. Chandan Sen, director of Ohio State’s Center for Regenerative Medicine & Cell Based Therapies, who co-led the study with L. James Lee, professor of chemical and biomolecular engineering with Ohio State’s College of Engineering in collaboration with Ohio State’s Nanoscale Science and Engineering Center.

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It’s getting too easy to create dangerous viruses. The upcoming national biodefense strategy should ensure that scientific journals don’t help terrorists learn how.

The news that researchers have recreated an extinct cousin to the smallpox virus using only commercially available technology and items purchased over the Internet renews concerns that bioterrorists could do the same if detailed information about the methods were published. Here’s the problem: scientific journals are geared toward publication, often without sufficient understanding of the public-security risks. We need a better system to ensure that information that could help bad actors stays unpublished.

It took David Evans’ team of scientists at the University of Alberta in Edmonton, Canada, about six months and $100,000 to recreate the horsepox virus, a close relative of the smallpox virus that killed perhaps 300 million people in the 20th century before it was eradicated in 1980. In a summary of the research, the World Health Advisory Committee on Variola Virus Research wrote that “recreation of such viral genomes did not require exceptional biochemical knowledge or skills, significant funds, or significant time.”

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