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Fat fish put obesity on the hook

...g lean fish helps slim waistlines, but researchers from the Center for the Study of Weight Regulation and ...ed 20–74 years the prevalence of obesity increased from 15.0% (1976–1980) to 32.9% (2003–2004). For children aged 2–5 years, the prevalence of overweight in...

Reconstructing the biology of extinct species: A new approach

...species, most of which are mammals ranging in size from mouse to elephant, that habitually move in diverse...ecies into one of six locomotor categories ranging from very slow and deliberate to fast and agile. The scientists then compared the canal size of each spe...

How 'memory' T cells curb the spread of viruses throughout the body

...elps explain how “memory” T cells protect the body from viral diseases. The research published today in P... of an invading virus occurs. After becoming sick from many viruses, the body becomes “immune” (protected) from recurrence of the same disease. This is wh...

Human genetic 'deserts' are teeming with significant life

...etely annotated, says Professor Alexandre Reymond, from the Centre for Integrative Genomics, University of...-out or knock-in, where genes are added or deleted from a model organism in order to study the effect of therapies, he says. “It appears that the same nuc...

Researchers identify protein pathway involved in Parkinson disease development

...e disorder of the central nervous system resulting from the loss of neurons in the brain that produce dopa...itochondrial protein PINK1 normally protects cells from oxidative stress and promotes cell survival by regulating function of the protein TRAP1. When PINK1 ...

Children of smokers have more than 5 times higher levels of a nicotine toxin

...n their urine, according to a study by researchers from Warwick Medical School at the the University of Wa...micals produced when the body breaks down nicotine from inhaled smoke to get rid of it. Sleeping with parents and lower temperature rooms were also asso...

Prey not hard-wired to fear predators

...ian tigers who stalk them" When wolves disappear from the forest, are moose still afraid of them? No, a...Rocky Mountains, the animals are to be down-listed from federal protection. The states of Wyoming and Idaho have already proposed plans that would allow fo...

3-D ultrasound scanner provides in-depth view of the brain

...ight ahead by emitting ultrasound waves like water from a hose. That way, it can produce an image of the b...D ultrasound scanner in 1987 for imaging the heart from outside the body. "Wherever there is a commercial 2-D niche now, we are working to put a 3-D too...

CU study reveals why starling females cheat

...l reasons, superb starling females appear to stray from their mates for the sake of their chicks, accordin... reasons. Some females mate with subordinate males from within their social group when they need help to raise their chicks. (Superb starlings are cooperati...

Electric fish conduct electric duets in aquatic courtship

...rid electric fish, which emit weak electric fields from a batterylike organ in their tails to sense their surroundings and communicate their species, sex and social status with other fish. It is also the first study to successfully sort signals in electric fish based on sex. The research, which is the ...

Surprising origin of cell's internal highways

... in order to hold its shape and divide, originated from a tiny structure near the nucleus, called the cent...crotubules in some specialized cells can originate from non-centrosomal structures, the centrosome has been considered the main origination point for microt...

The mouflons of the Kerguelen archipelago

...etic history of a population of mouflons descended from a single pair, the researchers demonstrated that t... contradict the belief that a population descended from a small number of individuals will exhibit numerous deficiencies and reduced genetic diversity. htt...

Researchers develop buckyballs to fight allergy

...icine known as nanoimmunology. The researchers, from Virginia Commonwealth University and Luna Innovati...ue structure, inertness and stability, researchers from a number of scientific fields have been investigating the tiny, hollow carbon cages to serve a varie...

Turn-ons and turn-offs for neurons

...ognition in the mouse, as was shown in key studies from 1996. But in spite of the published success, others scientists report some difficulties: in some experiments the full reactivation of Tet-regulated genes failed. Mazahir T. Hasan and colleagues at the Max Planck Institute for Medical Research in Heid...

Helping chlorine-eating bacteria clean up toxic waste

...ene (TCE). They do this by removing chlorine atoms from molecules and leaving less-toxic compounds behind.... project is funded by a three-year, $381,000 grant from the Department of Defense, which has some 6,000 toxic-dump sites of its own to clean up. Richards...

Study identifies 5 genetic themes key to keeping stem cells in a primitive, flexible state

...applied very rigorous analysis methods, using data from StemBase, the largest stem cell gene expression da...ist Dr. Miguel Andrade, the database includes data from thousands of DNA microarrays submitted mainly by scientists in Canada’s Stem Cell Network. All data ...

Male circumcision overstated as prevention tool against AIDS

...es in these Muslim communities, but rather results from the fact that there are significantly fewer prosti...s, do a much better job protecting their daughters from predatory males than do those in the south. A history of polygamy in these Muslim communities does n...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...ssue of the journal The Lancet of positive results from the first ever gene therapy trial for Parkinson’s ...ocedure and statistically significant improvements from baseline in both clinical symptoms and abnormal brain metabolism (as measured by positron emission t...

Ancient retrovirus sheds light on modern pandemic

...tudent in Emerman's laboratory, used DNA sequences from the chimp genome to reconstruct a small part of the PtERV1 virus. They reassembled about one-fifth of the virus by taking dozens of PtERV1 sequences and aligning them to create an "ancestral" sequence, teasing out areas of commonality between them....

Scientists close in on missing carbon sink

... an unexpectedly high proportion of carbon dioxide from the atmosphere, partially offsetting carbon enteri...ak northern and strong tropical land carbon uptake from vertical profiles of atmospheric CO2," was written by an international team of scientists led by Bri...

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