Tag: "change" at biology news
Climate change plus human pressure caused large mammal extinctions in late Pleistocene
...nd 10,000 years ago, when a combination of climate change
and human pressure resulted in the extinction of t... Barnosky and his colleagues conclude that climate change
also played a big role in driving these extinctions. Barnosky's colleagues in the study are Paul Koc...
Researchers determine genetic cause of Timothy syndrome
... in all the patients, the disorder was caused by a change
in a single DNA unit, or nucleotide, in the CaV1.2 calcium channel. "This channel was known to be important for the excitation and contraction of the heart, but its role in other parts of the body were less clear," said Keating. Studies...
Cigarette smoke causes breaks in DNA and defects to a cell's chromosomes, Pitt study finds
...t after anaphase is completed. Either way, a major change
in the structure of the chromosomes is the end result. "Others have found the presence of anaphase bridges is correlated with chromosome instability in cancer cells. Because cigarette smoking is linked to oral, larynx, lung, bladder and esophageal c...
AAAS US Presidential Candidates' Forum
...n *** WASHINGTON, DC -Stem cell research, climate change
and many other scientific matters are currently attracting significant interest from both candidates for the U.S. presidency and the general public as science and technology issues increasingly motivate major policy decisions. On September 30, the A...
Alzheimer's disease is not accelerated aging
...nding of the complex constellation of factors that change
[in the brain] with aging," said Howard Hughes Med...we can look within the context of how the deposits change
structure and function of the brain. Are there antecedent causes? Are some individuals more at risk?...
Plants will not save us from greenhouse gases
...ecies. Over the next century we may see a dramatic change
in all plants (including agricultural species) as our use of fossil fuels increases and generates increased carbon dioxide levels....
New research shows plants can shuffle and paste gene pieces to generate genetic diversity
...ansposable elements (TEs) can promote evolutionary change
in plants. The research, published Sept. 30 in the journal Nature, was led by Dr. Susan Wessler, a Distinguished Research Professor of plant biology at UGA. The Wessler lab studies TEs, which are pieces of DNA that make copies of themselves that c...
Genetic differences might help distinguish thyroid cancers
...ctor binding protein 6 (IGFBP6). It also showed no change
in two genes, caveolin-1 (CAV-1) or caveolin-2 (CAV-2). FTC cells, on the other hand, showed no expression by CLDN10 and low activity by IGFBP6 and/or by CAV1 and CAV2. If verified in a larger number of tumors, these genes, in combination with ...
USAID, Conservation International & Starbucks launch Conservation Coffee Alliance in Central America
...nd our desire to work with others to lead positive change
in the coffee industry." Since Starbucks and CI began working together in 1998, the collaboration has produced significant benefits for habitat conservation and farmer livelihoods in Mexico, Colombia and Peru. Beginning with its flagship site along ...
Researchers devise potent new tools to curb ivory poaching
...'s the problem in the forest you don't notice the change
in population until it's so dramatic that it's almost too late to do anything about it." Wasser is lead author of a paper describing the new means of determining ivory origins, being published the week of Sept. 27 in the Proceedings of the National ...
Researchers create nanotubes that change colors, form 'nanocarpet' and kill bacteria
...biological or chemical agents being deployed would change
color and simultaneously destroy the deadly substa...l death, with a hydrocarbon diacetylene, which can change
colors when appropriately formulated, the resulting molecule would have the desired properties of bo...
UMaine anthropologist wins Solon T. Kimball Award
...ological Association's Kimball award for effecting change
in public policy. Acheson, a cultural anthropologist, author and professor at UMaine since 1968, will receive the Solon T. Kimball Award for Public and Applied Anthropology at the association's annual meeting in San Francisco in November. The award, ...
Anthrax enzyme images reveal secrets of antibiotic resistance, suggest new drug design
...lfa drugs. The image showed that while this slight change
in the shape of a small part of the enzyme made DH...e's ability to combine DHPP and pABA. "This subtle change
is just enough to let DHPS prevent the antibiotic from binding to it, but not enough to disrupt the ...
A fishy change in diet
...ropean quagga mussels: the River's junk food. This change
may have negative effects on fish growth and may a...s. "We are seeing a ripple affect, whereby one change
of a fish's diet, works its way up and affects the food chain," says Ricciardi. "As a re...
'Smart antibiotics' may result from UCLA research
...tates in an effort to evade, the bacteriophage can change
its specificity using the mechanism we discovered,...arch team studied a bacteriophage that was able to change
to recognize different receptor molecules on the surface of bacteria. The phage genome contains a se...
Scientists find nanowires capable of detecting individual viruses
... with a receptor, it sparked a momentary, telltale change
in conductance that gave a clear indication of the virus's presence. Simultaneous electrical and optical measurements using fluorescently labeled influenza A confirmed that these conductance changes corresponded to binding and unbinding of single vir...
Scientists discover potential new way to control drug-resistant bacteria
...riophages contain genes that allow them to quickly change
their proteins to bind to different cell receptors...es whooping cough, contains a series of genes that change
the part of the virus that binds to the bacterial cell. These genes allow the phage to rapidly evolv...
A novel, safer strategy for regulating gene expression
... to regulate genes using any drug, or any chemical change
in the body. The system is also easier to turn on and off than existing systems, allowing a treatment to be stopped for safety reasons. "With recent concerns about the development of leukemia in several children treated with gene therapy, this new me...
Study explores gene transfer to modify underlying course of Alzheimer's disease
...chemical. None of the available drugs are known to change
the underlying neurobiology of the disease. Extensive studies in several animal models, including primates, showed that NGF or NFG gene delivery to the basal forebrain prevented the death of the same group of cells (cholinergic neurons) which under...
DuPont scientist named one of the world's top young innovators by MIT's 'Technology Review' Magazine
...t," she said. "It's caused us to take a 90-degree change
in perspective in how we view traditional telecomm...ntial to fuel new economic growth and dramatically change
the future. In addition to the recognition for Dr. Petrucci-Samija, Dr. Chowdhry will participate i...
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