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Scientists find link in humans between nerve cell production, memory

August 27, 2010

Production of new nerve cells in the human brain is linked to learning and memory, according to a new study from the University of Florida (UF). The research is the first to show such a link in humans. The findings, published online and in an upcoming print issue of the journal Brain, provide clues about processes involved in age- and health-related memory loss and reveal potential cellular targets for drug therapy.… read more

Scientists Find Memory Molecule

August 28, 2006

Scientists at SUNY Downstate Medical Center have discovered a molecular mechanism that maintains memories in the brain. In an article in Science magazine, they demonstrate that by inhibiting the molecule they can erase long-term memories, much as you might erase a computer disc.

Furthermore, erasing the memory from the brain does not prevent the ability to re-learn the memory, much as a cleaned computer disc may be re-used. This… read more

Scientists find new ‘quasiparticles’

June 3, 2008

Weizmann Institute physicists have demonstrated, for the first time, the existence of “quasiparticles” with one quarter the charge of an electron. This finding could be a first step toward creating exotic types of quantum computers that might be powerful, yet highly stable.

Quarter-charge quasiparticles have been sought as the basis of the theoretical “topographical quantum computer.” When particles such as electrons, photons, or even those with odd fractional charges… read more

Scientists find new way to sort stem cells

December 21, 2007

UC Irvine scientists have found a new way to sort stem cells that should be quicker, easier and more cost-effective than current methods.

The technique could in the future expedite therapies for people with conditions ranging from brain and spinal cord damage to Alzheimer’s and Parkinson’s diseases.

Scientists find shared genetic link between periodontitis and heart attack

May 27, 2009

A suspected genetic relationship between the dental disease periodontitis and coronary heart disease (CHD) has been confirmed by reseachers at the Institute for Clinical Molecular Biology, University of Kiel, Germany.

Both CHD and periodontitis are propagated by the same risk factors — most importantly, smoking, diabetes and obesity.

Scientists find way to block stress-related cell death

June 3, 2011

Scientists from The Scripps Research Institute have uncovered a potentially important new therapeutic target that could prevent stress-related cell death, a characteristic of neurodegenerative diseases such as Parkinson’s, as well as heart attack and stroke.

The scientists showed they could disrupt a specific interaction of a critical enzyme that would prevent cell death without harming other important enzyme functions. c-jun-N-terminal kinase (JNK), pronounced “junk,” has been… read more

Scientists find way to catalog all that goes wrong in a cancer cell

December 11, 2009

Princeton University scientists have produced a systematic listing of the ways a particular cancerous cell has “gone wrong,” pinpointing the alterations in cancer pathways to reveal the underlying regulatory code in DNA.

The findings give researchers a powerful tool that eventually could make possible new, more targeted therapies for patients.

Employing modern methods of systems biology, a computer program sorts through the behavior of each of 20,000 genes… read more

Scientists Find Way to Dim Cancer Switch

July 8, 2008

Stanford University researchers have found a “dimmer switch” that stops a gene from sending protein signals that promote cancer.

When the Myc gene makes too much of the protein Myc, cells lose the ability to kill themselves when they’re damaged, and instead keep growing. The researchers found that by turning down the Myc switch, they could shrink tumor cells to normal sizes and restore their ability to die.… read more

Scientists find ‘strongest’ natural material

February 19, 2015

A scanning electron microscope image of limpet teeth (credit: University of Portsmouth)

Limpet teeth might be the strongest natural material known, with biological structures so strong (3.0 to 6.5 GPa tensile strength) they could be copied to make future cars, boats, and planes, a new study by researchers from the University of Portsmouth has found.

The research was published (open access) Wednesday Feb. 18 in the Royal Society journal Interface.

“Until now, we thought that spider… read more

Scientists Get Atoms Ready for a Close-Up

May 15, 2002

Scientists at Lucent Technologies’ Bell Labs have developed a microscopy technique that can image individual atoms within a silicon sheet, allowing for precision analysis of dopant distribution.
As transistor sizes shrink, they require higher concentrations of electrons to work and are more sensitive to problems with dopant distribution.

The Lucent microscope shoots a narrow beam of high-energy electrons and measures deflection angles to locate individual atoms.

Scientists get first look at nanotubes inside living animals

September 25, 2007

Rice University scientists have captured the first optical images of carbon nanotubes inside inside living fruit flies, using near-infrared fluorescent imaging.

Based on their assays, the team estimates that only about one in 100 million nanotubes passed through the gut wall and became incorporated into the flies’ organs.

Scientists Giddy About the Grid

January 21, 2003

For years, connecting university and research-center supercomputers so they could share resources simply wasn’t feasible. New standards are changing that and opening the door to new research possibilities.

Scientists give flies false memories

October 19, 2009

By directly manipulating the activity of individual neurons, University of Oxford and University of Virginia scientists have given flies false memories of a bad experience, enabling scientists to now obtain a level of evidence about brain function that was impossible before.

To pinpoint the exact 12 neurons responsible for this memory among thousands in the fly brain, the researchers used a technique they developed called optogenetics, in which a… read more

Scientists’ Good News: Earth May Survive Sun’s Demise in 5 Billion Years

September 13, 2007

There is new hope that Earth, if not the life on it, might survive an apocalypse five billion years from now.

That is when, scientists say, the Sun will run out of hydrogen fuel and swell temporarily more than 100 times in diameter into a so-called red giant, swallowing Mercury and Venus.

Astronomers are announcing that they have discovered a planet that seems to have survived the puffing… read more

Scientists grow brain cells in a dish

June 16, 2005

Scientists have discovered a way to create new mice brain cells in a dish, using stem cells.

If the discovery also applied to humans, it could be possible to generate enough of a patient’s own stem cells to restore damaged brain function. Since the recipient of a transplant would also be the donor, the procedure could also be carried out without the need for immune system suppressing drugs.

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