Same in Biological News

New theory on why male, female lemurs same size

When it comes to investigating mysteries, Sherlock Holmes has nothing on Rice University biologist Amy Dunham. In a newly published paper, Dunham offers a new theory for one of primatology's long-standing mysteries: Why are male and female lemurs the same size? In most primate species, males ha...

U Alberta researcher in same group as Darwin and Hawking

EdmontonJohn Vederas, a University of Alberta professor in the department of chemistry, has been named to the Royal Society, the national academy of science of the United Kingdom and the Commonwealth. The ceremony takes place the week of July 6 in London. Included in the Royal Society's members...

Snails and humans use same genes to tell right from left

Berkeley -- Biologists have tracked down genes that control the handedness of snail shells, and they turn out to be similar to the genes used by humans to set up the left and right sides of the body. The finding, reported online in advance of publication in Nature by University of California,...

Food can affect a cell in the same way hormones do

Leuven, Belgium VIB researchers connected to the Katholieke Universiteit Leuven have discovered an important new mechanism with which cells can detect nutrients. This happens in the same way − and with the same effects as when cells receive a message from a hormone. This finding can teach ...

Best way to treat malaria: Avoid using same drug for everyone, scientists say

A team of scientists employing a sophisticated computer model pioneered at Princeton University and Resources for the Future has found that many governments worldwide are recommending the wrong kind of malaria treatment. Despite the availability of many drugs and therapies to treat malaria, man...

The song doesn't remain the same in fragmented bird populations

The song of passerine birds is a conspicuous and exaggerated display shaped by sexual selection in the context of male-male competition or mate attraction. At the level of the individual, song is considered an indicator of male quality. Paola Laiolo and colleagues at the Spanish Council of Res...

Researchers find hepatitis A and hepatitis C attack same protein to block immune defenses

Despite the fact that they both infect the liver, the hepatitis A and hepatitis C viruses actually have very little in common. The two are far apart genetically, are transmitted differently, and produce very different diseases. Hepatitis A spreads through the consumption of fecal particles from an ...

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...

Tarantula venom and chili peppers target same pain sensor

Venom from a West Indian tarantula has been shown to cause pain by exciting the same nerve cells in mice that sense high temperatures and the hot, spicy ingredient in chili peppers, UCSF scientists have discovered. The findings demonstrate that some plants and animals have evolved the same molecu...

Children of allergy sufferers prone to same problem

Infants whose parents have allergies that produce symptoms like wheezing, asthma, hay fever or hives risk developing allergic sensitization much earlier in life than previously reported, according to a study by Cincinnati researchers. The study suggests that the current practice of avoiding skin...

Biotech cotton provides same yield with fewer pesticides

Arizona farmers receive the same yield/acre, use fewer chemical insecticides and maintain insect biodiversity when they plant the biotech cotton known as Bt cotton, according to new research. The finding comes from the first large-scale study that simultaneously examined how growing Bt cotton aff...

UCLA study finds same genes act differently in males and females

UCLA researchers report that thousands of genes behave differently in the same organs of males and females ?something never detected to this degree. Published in the August issue of Genome Research, the study sheds light on why the same disease often strikes males and females differently, and why ...

Molecular DNA switch found to be the same for all life

The molecular machinery that starts the process by which a biological cell divides into two identical daughter cells apparently worked so well early on that evolution has conserved it across the eons in all forms of life on Earth. Researchers with the U.S. Department of Energy's Lawrence Berkeley N...

Evolution mystery: Spider venom and bacteria share same toxin

It's a case of evolutionary detective work. Biology researchers at Lewis & Clark College and the University of Arizona have found evidence for an ancient transfer of a toxin between ancestors of two very dissimilar organisms--spiders and a bacterium. But the mystery remains as how the toxin pas...

Drug resistance may travel same path as quorum sensing

The cellular "pumps" associated with multi-drug resistance in bacteria may also be involved in exporting signals responsible for cell-cell communication, a process known as quorum sensing, said researchers from Baylor College of Medicine in a report that appears online today in the Proceedings of t...

Men and women differ in brain use during same tasks

The comedians are right. The science proves it. A man's brain and a woman's brain really do work differently. New research from the University of Alberta shows that men and women utilize different parts of their brains while they perform the same tasks. The results of the research are reported t...

'Sharp' older brains are not the same as younger brains

Researchers working with rats have found the first solid evidence that still "sharp" older brains store and encode memories differently than younger brains. This discovery is reported by a Johns Hopkins team in the issue of Nature Neuroscience released online Nov. 13. Should it prove to apply as...

How fish hear and make sounds at same time

Cornell University researchers have learned how a common fish found along the West Coast can hum and hear outside sounds at the same time. The study marks the first time that scientists have found a direct line of communication between the part of a vertebrate's brain that controls the vocal musc...

Two designer drugs hit same lung cancer target, but only one is effective

Two designer cancer drugs differed dramatically in a laboratory test comparing their ability to shut down a mutant, overactive growth signal in lung cancer cells, reports a team headed by scientists at the Dana-Farber Cancer Institute. Although both drugs killed cells containing a normal but over...

Organic farms produce same yields as conventional farms

Organic farming produces the same yields of corn and soybeans as does conventional farming, but uses 30 percent less energy, less water and no pesticides, a review of a 22-year farming trial study concludes. David Pimentel, a Cornell University professor of ecology and agriculture, concludes, "Or...

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...

Bitter or sweet? The same taste bud can tell the difference

The tongue's ability to differentiate between sweet and bitter tastes may reside in the same taste bud cells, a new study reports. The study explains the discovery of a chemical messenger called neuropeptide Y (NPY) in taste bud cells. Though researchers have long known that NPY is active in the...

Nicotine triggers the same brain reward circuitry as opiates

In experiments with mice, researchers have found that nicotine triggers the same neural pathways that give opiates such as heroin their addictively rewarding properties--including associating an environment with the drug's reward. However, unlike opiates, nicotine does not directly activate the bra...

Highest ever winter water temperatures recorded

...ms varies in Tasmanian waters. As part of the Integrated Marine Observing System (IMOS), a National Reference Station mooring has been deployed at the same site, and data is now available online every 10 minutes. Monthly samples are taken by boat to measure nutrients, phytoplankton, and zooplankton (bioma...

Navigating in the ocean of molecules

...vity - if available - at the beginning of the navigation process. In this case, Scaffold Hunter only links the scaffolds that are known to display the same biological activity to the branches. As a result, these branches are very likely to bear fruit: active substances are probably also located in the bra...

Carbon nanoparticles toxic to adult fruit flies but benign to young

... of biology, who specializes in fruit fly evolution. "The point is these same compounds that were not toxic to the (fruit fly) larvae were toxic to the a...said the findings are important, because they show that permutations of the same material carbon can have different effects in the environment. "It's n...

Carnegie donates landmark clones to biology

...e 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...ll share similar genes for this activity, we wanted to see in this study if same feature could occur across species," remarked Dominique Loqu lead author of...

Moving to the US increases cancer risk for Hispanics

...in their homelands. "Hispanics are not all the same with regard to their cancer experience," said Paul...es to date have classified all Hispanics under the same umbrella, as a single ethnic group, hiding the dif... was more than double that in Cuba and Mexico. The same was said for lung cancer among Mexican and Puerto ...

More than half of Texas physicians do not always recommend HPV vaccine to girls

..., vaccine rates for 11- to 12-year-old girls are between 6 percent and 25 percent. "Physicians train all across the country using more or less the same curriculum, so as a group they tend to be fairly homogenous in their beliefs," said Kahn. Sally Vernon, Ph.D., director of the Division of Health ...

Abnormal brain circuits may prevent movement disorder

...work revealed that patients and non-patients with the disease gene have the same underlying functional brain abnormality, such as overactivity of motor circ...resented with the uncontrollable movements. While their brains show the same abnormal network, only approximately 30% of people who carry the mutated ge...

Understanding how weeds are resistant to herbicides

...which it happens," said Tranel. "If you use the same herbicide year after year, you're exerting selecti... such as pigweeds. "Because they all belong to the same genus, their genomes are very conserved. So if we ... in northern Illinois and a year later you see the same resistance in a population in southern Illinois, o...

Joint research into an enzyme that causes genetic diseases

... arise) diverse metabolic diseases of genetic origin are triggered, amongst them lactic acidaemia, hypoglycaemia, and psycho-motor retardation. At the same time, being at a metabolic crossroads, pyruvate carboxylase is potentially a target in obesity and diabetes treatments. The paper presents the enzy...

Beautiful plumage: Feather color and sex start the species revolution

...horogood -- this tiny genetic difference can potentially lead to the evolution of new species. Two Monarcha castaneiventris sub-species have the same body shape, but different colored bellies and distinct songs. Birds from these sub-species could mate, but these differences stop them recognizing eac...

Pinhead-size worms + robot = new antibiotics

...ing the results. These tests sometimes do not work well. They may give passing grades to potential drugs that are toxic, or that fight bacteria in the same ways as existing antibiotics that are loosing effectiveness against drug-resistant bacteria. A much better test would involve screening of potential n...

Lead-based consumer paint remains a global public health threat

... poisoned by the metal, setting them up for life-threatening problems later in life. "Our studies have shown that when comparing the prices of the same size can of paint produced by several companies within India with a wide range of lead concentrations, there is no significant consumer price differen...

Brain difference in psychopaths identified

...t reduction in the integrity of the small particles that make up the structure of the UF of psychopaths, compared to control groups of people with the same age and IQ. Also, the degree of abnormality was significantly related to the degree of psychopathy. These results suggest that psychopaths have biolog...

New stem cell research could reduce number of animal experiments

...ing a share of a 4.5 million fund from the NC3Rs. Dr Vicky Robinson, chief executive of the NC3Rs, said: "If we are to reduce animal use and at the same time continue to develop new treatments for diseases then we must engage the best minds and harness the best science and technology in this endeavour....

Sustainable agriculture at the ESA Annual Meeting

...ng more sustainable agricultural systems. "Across agricultural history, we've fundamentally relied on annual grain crops," Glover says. "But at the same time we rely on them, they're degrading the ecosystems they're in, which reduces their productivity." To compare the long-term sustainability of the...

The way you eat may affect your risk for breast cancer

...people." Previous studies have shown that intermittent calorie restriction provided greater protection from mammary tumor development than did the same overall degree of restriction, which was implemented in a chronic fashion. The researchers compared changes of a growth factor (IGF-1) in relationship...

Holding breath for several minutes elevates marker for brain damage

...h hold and at fixed intervals for the two hours following the end of the breath hold. The researchers also measured arterial blood gases. They did the same measurements on the individuals in the control group, but the controls rested on their backs for the entire experiment, without performing the breath ...