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Tag: "general" at biology news

Mechanism for memory revealed in neurons of electric fish

...e pursuing further studies. "We're looking at the general idea that we have long-term changes in the brain that affect the computation that neurons do," says Zakon. "We have ion channels [in the neurons] and we know those are activated. The mystery is how a short stimulus leads to such a long-lasting activa...

First wolverine radio-collared in Pacific Northwest

... an exciting opportunity to learn more about their general ecology in the north Cascades," said Fitkin of WDF... her parents and possibly siblings are in the same general area, so chances are good that we will collar additional individuals in the traps we've set." Roh...

Diverse tropical forests defy metabolic ecology models

...e '" the presence of some very large trees, or the general shape of the tree size distribution curve," explai...a. "So you start to think that there might be some general explanations. But the closer you look, the more differences you find '" differences that can'TMt be ...

New compound stops brain cell degeneration in Alzheimer's disease

...or drug discovery in neurodegenerative diseases in general because it provides proof of concept that targeting over-production of cytokines by activated glia is a viable approach that has the potential to modulate disease onset and progression, the researchers said. Decline of cognitive functions linked to ...

Commonly used antidepressants may also affect human immune system

...In December, the discovery was highlighted for the general scientific audience by the journal Nature Reviews Immunology, and now the research team is working to produce an animal model that may help describe the precise nature of this interaction. "The novelty is that we reveal a potential communication, in...

Manipulating single cell receptor alters animal behavior

...ncreased NIH funding for neuroscience research and general strides in molecular biology and technology that permit scientists to examine exactly how cells function at the molecular level. Daniels explains that the kidneys and lungs produce enzymes that eventually provoke production of angiotensin. It prev...

World's pledge to halve hunger by 2015 looks like empty promise

...rch (see companion story) and is a former director general of the International Food Policy Research Institute. With 10 million children dying every year from disease and hunger, the world is increasingly unstable. "It's very sad and makes the world much more dangerous, because more people will be motivated...

Lack of a key enzyme dramatically increases resistance to sepsis

... thinking in sepsis research," Ulevitch said. "The general thinking is that this initial cytokine 'storm' is harmful, and that belief has been the basis of a number of unsuccessful clinical studies. In our study, cells containing caspase-12 appear to weaken the activity of caspase-1 that is normally essentia...

Amazon rainforest greens up in the dry season

..."Most of the vegetation around the world follows a general pattern in which plants get green and lush during the rainy season and then during the dry season, leaves fall because there's not enough water in the soil to support plant growth," said lead researcher Alfredo R. Huete of The University of Arizona i...

Engineered mouse mimics cognitive aspects of schizophrenia

...als showed no difference from normal mice in their general cognitive functioning, activity level, sensorimotor functioning, or anxiety. However, the mice did show the same kinds of specific cognitive deficits seen in human schizophrenics. In tests using mazes, the animals showed deficits in "working memory"...

Researchers develop portable 'vein finder' for faster, more accurate injections

...tems to evaluate the heart, valves and vessels for general blood-flow studies. But this kind of equipment is ...ike large ultrasound systems used by hospitals for general blood-flow studies, the vein finder is targeting a very small area of the body. "That means the acou...

Formation of cellulose fibers tracked for the first time

...hrhardt said. "The microtubules act as more than a general scaffold for organizing the cell wall; individual elements of the microtubule array appear to actively direct the pattern of the cellulose fibers. This work should set a long-standing discussion to rest." ...

Study in Science holds promise for a new approach to drug therapy

.... Researchers tested two compounds as a proof of general principle, M119 and M201, which bound most effectively to the hotspot. For the purposes of the experiment, researchers chose to test the affect of M119 and M201 on two biological systems that the G protein gamma-beta subunit controls. In one, white b...

UC San Diego partners with Venter Institute to build marine microbial genomics cyberinfrastructure

...er and CAMERA projects. "The architecture is quite general and will be quickly adaptable to other areas of data-intensive science." Collaboratories are virtual laboratories where scientists can collaborate on research from dispersed locations--interacting with colleagues, accessing instrumentation, sharing ...

'Word-vision' brain area confirmed

...bject recognition and naming, face processing, and general language abilities," reported the researchers. "Such selectivity may be difficult to observe in patients with more customary lesions resulting from strokes or tumors, which often affect a larger extent of cortex and white matter. The small size of th...

Breast implants not associated with cancer risk, study reports

...s observed, 71.9 cases expected) compared with the general population. The authors suggest the higher incidence of lung cancer may be due to the high rates of smoking in Swedish women with cosmetic breast implants. Lower breast cancer incidence could be explained by the lower body mass index, higher numbe...

Patients now surviving once-fatal immune disease

...f life in this group was equivalent to that of the general male population of the United States," said Vanessa Howard, R.N., M.S.N., a nurse practitioner for the Immunology service at St. Jude and first author of the paper. "In the past, the majority of patients with XLA died of acute or chronic infections i...

Researchers unravel DNA tangles and enzyme seamstresses

...llow in Chan's research group. "These are the same general principles that can be applied to other areas of science and engineering to address various entanglement problems," Chan says. The curved distinctions between DNA strands may allow the seamstresses of the process -- the topoisomerases -- to identify...

Losing sleep undoes the rejuvenating effects new learning has on the brain

...nd a longer reaction time. "Sleep is necessary for general health, but it now appears that the brain needs sleep more than any other part of the body," Hairston said. Previous studies have shown that the hippocampus is important for spatial learning. "The hippocampus also has the unique ability to generate ...

Novel method reveals how menthol discovery could point towards new or improved pain therapies

...n, Bandell added, it could prove to be useful as a general method to analyze the mechanism by which drugs can activate or inhibit ion channels or other receptors. Specifically, the new methodology could be used to identify amino acid residues in certain ion channel proteins and G-protein coupled receptors (p...

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