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Different in Biological News

Grant supports LSUHSC research on how like cell receptor systems determine very different functions

New Orleans, LA Andy Catling, PhD, Associate Professor in the Department of Pharmacology and the Stanley S. Scott Cancer Center at LSU Health Sciences Center New Orleans, has been awarded a $177, 500 supplement to his RO1 grant by the National Institute of General Medical Sciences to support his ...

One sponge-like material, three different applications

A new sponge-like material that is black, brittle and freeze-dried (just like the ice cream astronauts eat) can pull off some pretty impressive feats. Designed by Northwestern University chemists, it can remove mercury from polluted water, easily separate hydrogen from other gases and, perhaps mos...

Animals that seem identical may be completely different species

Animals that seem identical may belong to completely different species. This is the conclusion of researchers at the University of Gothenburg, Sweden, who have used DNA analyses to discover that one of our most common segmented worms is actually two types of worm. The result is one of many suggest...

Old and young brains rely on different systems to remember emotional content

DURHAM, N.C.Neuroscientists from Duke University Medical Center have discovered that older people use their brains differently than younger people when it comes to storing memories, particularly those associated with negative emotions. The study, appearing online in the January issue of Psych...

Human genes sing different tunes in different tissues

CAMBRIDGE, Mass. -- Scientists have long known that it's possible for one gene to produce slightly different forms of the same protein by skipping or including certain sequences from the messenger RNA. Now, an MIT team has shown that this phenomenon, known as alternative splicing, is both far more...

What is wild? Odor attraction among different wildtype Drosophila

Vinegar flies ( Drosophila melanogaster ) show a highly selective behavior towards odor stimuli. A series of behavioral studies showed that a single olfactory stimulus is often not sufficient for immediate attraction to potential food sources or oviposition sites. Interestingly, the behavior diffe...

Ultrasonic frogs can tune their ears to different frequencies

Researchers have discovered that a frog that lives near noisy springs in central China can tune its ears to different sound frequencies, much like the tuner on a radio can shift from one frequency to another. It is the only known example of an animal that can actively select what frequencies it he...

Species have come and gone at different rates than previously believed

Diversity among the ancestors of such marine creatures as clams, sand dollars and lobsters showed only a modest rise beginning 144 million years ago with no clear trend afterwards, according to an international team of researchers. This contradicts previous work showing dramatic increases beginnin...

Extreme nausea and vomiting varies among pregnant women from different countries

Mothers born in India and Sri Lanka are three times more likely to suffer from extreme nausea and vomiting in pregnancy (hyperemesis gravidarum) than ethnic Norwegians. This finding comes from the Norwegian Institute of Public Healths study of 900, 000 first-time pregnancies registered in the Medi...

Concentrating on different aspects of pain leads to breakthrough in migraine genetics

Migraine is the most common cause of episodic headache, and by far the most common neurological cause of a doctors visit. It affects some 15% of the population, including some 41 million people in Europe, and places a considerable burden on healthcare in both the developed and the developing world...

Insects evolved radically different strategy to smell

Darwin's tree of life represents the path and estimates the time evolution took to get to the current diversity of life. Now, new findings suggest that this tree, an icon of evolution, may need to be redrawn. In research to be published in the April 13 advance online issue of Nature, researchers a...

Severe asthma may be a different form of the disease

BETHESDA, Md. (Jan. 28, 2008) − A multi-center research project to investigate severe asthma has found a key physiological difference between severe and non-severe forms of the disease, a finding that could help explain why those with severe asthma do not respond well to treatment. The st...

At the root of nutrient limitation, ecosystems are not as different as they seem

TEMPE, Ariz. -- Anyone who has thrown a backyard barbecue knows that hot dogs are inexplicably packaged in different numbers than buns eight hot dogs per pack versus 10 hot dog buns. Put in ecological terms, this means that weenie roasts are hot-dog limited the extra buns are worthless without h...

454 Sequencing uncovers a genetic basis for different social behaviors in wasp

Branford, September 27, 2007 454 Life Sciences, a Roche company, in collaboration with researchers from the University of Illinois at Urbana-Champaign today announced that they have uncovered genetic underpinnings to social behavior in wasps. Using the companys Genome Sequencer system, the rese...

Adaptation to parasites drive African fishes along different evolutionary paths

Quebec City, Canada - An international team of scientists from Canada (Universit Laval), the U.K. (University of Hull, Cardiff University) and Spain (Do ana Biological Station), have discovered that a pair of closely related species of East African cichlid fishes a group of fish whose diversity c...

Computation to unravel how genes are regulated and shed light on how cells become different

A closer alliance between computational and experimental researchers is needed to make progress towards one of biologys most challenging goals, understanding how epigenetic marks contribute to regulation of gene expression. This emerged from a recent workshop organised by the European Science Foun...

Marine phytoplankton changes form to protect itself from different predators

Suppressing colony formation is a useful strategy against copepods because they prefer to eat colonies of phytoplankton. A tiny single-celled organism that plays a key role in the carbon cycle of cold-water oceans may be a lot smarter than scientists had suspected. In a paper published June 1...

Biodegradable microspheres deliver time release vaccines, stimulate different immune response

A new vaccine delivery system using microspheres of a biodegradable polymer may not only reduce the need for booster shots in some cases, but also appears to stimulate an immune response that traditional vaccines do not. Researchers from Iowa State University report their findings today at the ASM...

DNA ends: Common tool, different job

Every time a cell repairs or replicates its DNA, the resulting single strand is wrapped up by a dedicated protein complex. In eukaryotes or organisms whose cells have a nucleus, this job is handled by a tripartite complex called replication protein A (RPA). Researchers at the Salk Institute for Bio...

Freeze! Scientists film proteins at work by freezing them at different states

It is difficult to find similarities between Grenoble and Hollywood or between the researchers at the ESRF and the Institut de Biologie Structural (IBS) and world-known filmmakers. However, scientists from these institutes based in Grenoble (France) have managed to produce a movie. The actors are n...

NYU scientists identify how development of different species uses same genes with distinct features

Biologists at New York University have identified how different species use common genes to control their early development and alter how these genes are used to accommodate their own features. The findings, which were discovered by researchers in Professor Claude Desplan’s and Steve Small’s labora...

Internal body clock dictates timing of different types of stroke

The internal body clock, or circadian rhythm, seems to influence the timing of different types of stroke, suggests research published ahead of print in the Journal of Neurology Neurosurgery and Psychiatry. The research team analysed data from almost 13,000 patients who had had one of three types...

Patients and their doctors have different perceptions about HIV and its treatment

According to results of a nation-wide study published in the latest issue of SAGE Publications' Journal of the International Association of Physicians in AIDS Care (JIAPAC), HIV positive patients and their doctors have very different views about the disease and how it's treated. The study uncover...

HIV vaccine takes different tack to boosting immune response

Researchers at Baylor College of Medicine (BCM) in Houston have reason to believe their unorthodox vaccine could one day help to prevent or control HIV infection, according to a study published in today's edition of Public Library of Science Medicine. The study in mice boosted the immune response...

Are dancers genetically different than the rest of us? Yes, says Hebrew University researcher

What makes dancers different than the rest of us? Genetic variants, says a researcher at the Hebrew University of Jerusalem. In a study published in the American journal, Public Library of Science Genetics, Psychology Prof. Richard P. Ebstein and his research associates have shown, through DNA...

Viral 'fitness' explains different resistance patterns to aids drugs

Some HIV medications lead to the development of drug-resistant HIV when patients take as few as two percent of their medications. For other medications, resistance occurs only when patients take most of their pills. These differences appear to be explained by the different levels of viral "fitness"...

Attention shoppers: Researchers find neurons that encode the value of different goods

Researchers at Harvard Medical School (HMS) report in the April 23 issue of Nature that they have identified neurons that encode the values that subjects assign to different items. The activity of these neurons might facilitate the process of decision-making that occurs when someone chooses between...

Human cerebellum and cortex age in very different ways

Researchers have found that the two primary areas of the human brain appear to age in radically different ways: The cortex used in higher-level thought undergoes more extensive changes with age than the cerebellum, which regulates basic processes such as heartbeat, breathing and balance. Their work...

Tiny roundworm's telomeres help scientists to tease apart different types of aging

The continual and inevitable shortening of telomeres, the protective "caps" at the end of all 46 human chromosomes, has been linked to aging and physical decline. Once they are gone, so are we. But there are more ways than one to grow old. Researchers at Salk Institute for Biological Studies demo...

Genetics links whale to two different ocean basins

For the first time ever, a genetic study has followed a single humpback whale from one ocean basin to another, adding to traditional notions of the migratory patterns of these majestic marine mammals in the process, according to researchers from the Wildlife Conservation Society (WCS), the American...

Treatments have same target, different responses for lung cancer patients with genetic mutation

The gene mutation that identifies the lung cancer patients most likely to respond to the drug gefitinib (Iressa) is not associated with a response to the drug cetuximab (Erbitux), according to a new study published in the August 17 issue of the Journal of the National Cancer Institute. Both drugs...

Scientists discover how fish evolved to float at different sea depths

Scientists at the University of Liverpool have discovered how fish have evolved over the last 400 million years to stay motionless at different water depths. A research team led by Dr Michael Berenbrink, a Comparative Physiologist at the School of Biological Sciences, has revealed how modern fis...

The hepatitis healing power of blueberry leaves

...r and can take 20 years or more to develop into disease, a dietary supplement might help slow or stop disease progression. So they screened nearly 300 different agricultural products for potential compounds that suppress HCV replication and uncovered a strong candidate in the leaves of rabbit-eye blueberry (na...

Marine microbes creating green waves in industry

... come up with improved manufacturing routes. We are taking advantage of the natural diversity of marine organisms that has arisen through evolution in different environments and coupling that with high-tech screening systems. We are looking to find naturally occurring microbes that already have a built-in capa...

Navigating in the ocean of molecules

...emical structures, are unimaginable: it is estimated to contain up to 10160 different molecules. Written out in full, this figure would fill two lines of closely... the quest for new active agents: chemists can then vary the scaffolds with different appendages to synthesize the optimal active agent. Scaffold Hunter can also...

Carbon nanoparticles toxic to adult fruit flies but benign to young

... in their food. Yet adult Drosophila experienced a different fate. Tests showed adults immersed in tiny pits co...a control test tube and test tubes containing four different types of carbon nanoparticles corresponding with t...ermutations of the same material carbon can have different effects in the environment. "It's not the nanop...

Scientists find universal rules for food-web stability

...ing is that food webs consisting of only a few species behave qualitatively different from webs consisting of many species. "Small ecosystems apparently follow different rules than large ecosystems," says Ulf Dieckmann. "Systems with fewer speci...

Carnegie donates landmark clones to biology

...used to unravel the interaction of the membrane proteins amongst each other. Recent research at the Carnegie department has shown that cells across different species use the same mechanism at the cell membrane to regulate the uptake of the vital nutrient nitrogen. Previous Carnegie work indicated that plant...

AGU journal highlights -- Aug. 6, 2009

...global effects of LCC, Pitman et al. analyze seven different climate models. Each model simulation is run sever...from differences in the implementation of the LCC, different land surface models, and different ways of representing the landscape. The researcher...

New cancer drug delivery system is effective and reversible

...aid. "What we're really doing here is coming up with a general toolbox to deal with a broad range of cancers." "You can change aptamers to target a different type of cancer, you can change the therapeutic molecules to fight cancer or other diseases, and you can reverse the dose," Cheng said. "That's a lot o...
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