Tag: "until" at biology news

Findings show how toxic proteins rob Alzheimer's patients of memory

... ADDLs are soluble and diffuse between brain cells until they find vulnerable synapses. (Single pieces of amyloid beta protein in the brain is normal.) Klein, Grant A. Krafft, formerly at Northwestern University's Feinberg School of Medicine and now chief scientific officer at Acumen Pharmaceutic...

Brain surface stimulation alleviates Parkinson's symptoms

...er only a few minutes of stimulation, which lasted until shortly after stimulation was stopped. Analyses of changes in brain electrical activity due to the stimulation revealed that it restored the normal activity in the striatum--the area known to become hyperactive in Parkinson's and the area that is tar...

Common lineage suggested for viruses that infect hosts from all three domains of life

...'s immunology program. "It hadn't been appreciated until a few years ago that there are great structural similarities among seemingly unrelated viruses." The research builds on earlier work by Burnett and his colleagues, in which they determined the structure of a virus called PRD1 that infects bacteria. ...

UT Southwestern researchers trace how virus that causes AIDS spreads following oral exposure

...SIV was not present in tissues below the esophagus until four days post-infection, indicating that the stomach acids probably prevented the virus from entering through the stomach or intestines. "It is clear from our study that the oral and esophageal mucosa and the tonsils are likely to be the most import...

Study: Eat leafy green veggies to help prevent cataracts

...dants lutein and zeaxanthin to their products, but until now there has been no biochemical evidence to support the claim that these substances help protect the eyes, said Joshua Bomser, a study co-author and an assistant professor of nutrition at Ohio State University. Some studies have suggested that thes...

INEEL honors five scientists as Laboratory Fellows

...journals, though he did not start physics research until 1982. His four most-cited articles have received from 300 to more than 800 citations. He is also the sole author of a 647-page monograph on "Fractals, Scaling and Growth Far from Equilibrium" published by Cambridge University Press in 1998...

Chicken genomic sequence yields insight into vertebrate evolution

...ls, studies in lower vertebrates have been limited until now. Martina Paulsen, Ph.D., and her colleagues at the Universitt des Saarlandes in Germany, compared the Beckwith Wiedemann Syndrome (BWS) imprinted gene cluster in chickens to that in mammals, pufferfish, and zebrafish. ...

Singing in the brain

...crystallized or essentially set in stone at least until the next mating season, when some changes can occur. The Utah biologists tested a theory dealing with the long-term "auditory memory" formed by young sparrows when they first hear other sparrows sing. Scientists want to know how that memory is stor...

Study by US, Hebrew University scientists sheds light on how bacteria persist despite antibiotics

...ersistent cells slowly but surely continue growing until they reach a "normal" growth stage. At that point, the former persistent cells are now themselves susceptible to antibiotic attack. The work of the researchers Prof. Nathalie Questembert-Balaban, head of the biophysics laboratories at the Hebrew Un...

International HapMap consortium widens data access

... one of the public databases that had been unable, until today, to incorporate the HapMap data, and which is a joint genome browser project between the European Bioinformatics Institute and the Wellcome Trust Sanger Institute in Cambridge, England. "Now, researchers will be able to study how this new infor...

Hudson's Bay Company fur trapping policies set stage for modern environmental struggles

...itory. That influence, although waning, persisted until 1871 when the company closed its last post in the United States. The company gained its foothold on the Pacific Northwest when it absorbed a competitor, the North West Company in 1821. George Simpson, head of Hudson's Columbia Department, was the...

MIT team engineers new approaches to understanding malaria, more

...rials from the atomic to the structural scale. So, until recently, the head of MIT's Department of Materials Science and Engineering never thought he'd be a player in the hunt for cures to malaria and pancreatic cancer. It turns out, however, that Suresh's expertise in nanotechnology is quite applicable to...

Study in Royal Society journal on first evidence for magnetic field detection in sharks

...o navigate across seemingly featureless oceans but until now evidence of this 'compass sense' has been circumstantial. We showed that captive sharks can be trained to swim over a target whenever an artificial magnetic field is activated thereby clearly demonstrating that sharks can sense magnetic fields. ...

Alcoholism and excessive food intake may share chemical pathways in the brain

...alcohol for a 12-hour light/12-hour dark day cycle until all had acquired a preference for seven-percent alcohol over water in a two-bottle choice. "Rats are nocturnal animals and sleep during the light and feed and engage in other normal behaviors during the darkness," noted Lewis. The rats were then g...

Femtosecond laser technique opens new opportunities for research on neural regeneration

...t know anything about femtosecond laser technology until the physicists explained it to me," said Jin, who has spent years investigating the development of the worm's nervous system. "Now there is a lot to do--it has opened up the potential to address questions that we have never been able to address befor...

Loss of fruit fly retina protein delays blinding light damage

... relatively minor loss of the light-induced signal until much later. Other flies whose rhodopsin destruction had been genetically accelerated went blind twice as fast as normal flies. "We were quite surprised - we thought we'd prove correct what scientists had assumed was happening, but instead we proved t...

Leibniz prizewinners 2005

... Biology Laboratory (EMBL) in Heidelberg from 1991 until 1999. Since 1999 he has held the chair for molecul...tudied physics at the University of Bonn from 1991 until 1996. Following a one year research visit to Stanford University in the USA from 1997-98 he obtained...

50,000-year-old plant may warn of the death of tropical ice caps

...h Center had found a small bed of plants that had, until then, been buried by the ice cap. Carbon dating on those plants suggested that they had been buried nearly 5,000 years ago. "We were surprised by those dates and had the plant tissue dated four times by two separate institutions," Thompson said, "but...

Scientists find impaired chromatin structure formation & imprinted gene involvement in Rett Syndrome

...ith Rett Syndrome (RTT) appear to develop normally until 6 to 18 months of age, when they enter a period of regression, losing speech and motor skills. Most develop repetitive hand movements, irregular breathing patterns, seizures and motor control problems. RTT leaves its victims profoundly disabled, requ...

Body's biological clock found to affect cardiac rhythm patterns in healthy adults

...he like), gradually shifting the behavior patterns until the participants had a 28-hour day, about 19 hours awake and 9 hours asleep. This 28-hour sleep/wake schedule was sustained for seven "days," while core body temperatures, used to mark participants' internal circadian phases, continued to oscillate ...

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(Date:7/28/2014)... team of researchers led by the University of Arizona ... The genetic information will enhance scientists, and agriculturalists, understanding ... as enable the development of new rice varieties that ... to help solve global hunger challenges. , The paper, ... ) and evidence for independent domestication," was published online ...
(Date:7/28/2014)... and organic compounds in hydrothermal environments are critical components ... for the deep biosphere, and may have implications for ... about how minerals influence organic reactions. A team ... a common mineral acts as a catalysts for specific ... solvents or expensive reagents. , At the heart of ...
(Date:7/28/2014)... Researchers at Yale School of Medicine have pinpointed a mechanism ... glucose levels in the blood, linking it to both type ... the July 28 issue of Proceedings of the National ... prolyl endopeptidase enzyme located in a part of the ... of steps in motion that control glucose levels in the ...
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