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Tag: "types" at biology news

Study uncovers mutation responsible for Noonan Syndrome

... cause Noonan syndrome are also mutated in several types of leukemia and solid tumors, our findings may also expand our knowledge of cancer pathways." ...

Gene therapy inhibits epilepsy in animals

...least in part, because of an imbalance between two types of neurotransmitters: the glutamate system, which stimulates neurons to fire, and the GABA system, which inhibits that brain activity. GABA's inhibitory role is considered particularly important in the dentate gyrus because the dentate gyrus acts a...

New research identifies gene important for nicotine's effects on the brain

...portant for nicotine addiction as opposed to other types of abuse. Picciotto's research used both genetically engineered mice with altered nicotine receptors and viruses that could block CREB function. She and her colleagues showed that one type of nicotine receptor was important for both CREB activity a...

Vaccination with embryonic stem cells prevents lung cancer in mice

...ne capable of preventing the appearance of various types of cancers in humans, especially those with heredi...s in an animal. We are studying several different types of carcinogen-induced mouse cancers (skin, colon, breast) to determine whether the preventative effe...

The power of one: A simpler, cheaper method for cell fusion

...is technology could be developed to fuse different types of cells in the future. Purdue's Research Foundation provided funding for Lu's research, and Lu has submitted a U.S. patent application based on the technique. He plans to continue to his work on the technology at some point in the future....

Natural anti-viral enzyme helps keep cancer cells alive, researchers find

...lls that's apparently broadly conserved among many types of solid tumors." Using cultured human cells, the researchers set out to study enzymes known to be involved in keeping cancer cells alive and proliferating. They soon narrowed the focus to one called RalB. This molecule is part of the Ras family of...

Researchers identify a key regulator for skin stem cells

...event skin stem cells from maturing into the three types of adult skin cells -- epidermal, sebaceous and ha...ch have the ability to differentiate into multiple types of tissues, one challenge they face is maintaining the stem cells in their immature state. The newly...

Novel pathway regulates timing of brain cell development

...volves the carefully timed production of different types of nerve cells by neural stem cells: neurons are produced first, then astrocytes. Making too much of one kind of cell and too little of another at a given time could lead to brain malformations. In the October 6 issue of Cell, researchers in the Neur...

Cocaine high caused by interference in neuronal receiving stations

...have traced the effect to interactions between two types of receiving stations in neurons for nerve signals from their neighbors. The researchers' studies in rats found that when the animals received cocaine, a component of a receptor for the neurotransmitter dopamine tends to grab onto a component of a re...

Selecting life: Scientists find new way to search for origin of life

...and are seldom flat. We need to find which surface types are the best 'docking stations' for different biom...es. However, there are hundreds of mineral surface types and thousands of plausible prebiotic molecules, making literally millions of possible biomolecule/mi...

New technology to speed up research into Huntington's disease

...luable for testing cognition in animals with other types of neurological dysfunction such as Alzheimer's disease or prion disease, and particularly where motor deficits make cognitive testing difficult or impractical. Dr Morton said "we are pleased at just how effective the test was and already clinical t...

Elusive rust resistance genes located

...Industry scientist, Dr Evans Lagudah, says various types of rust resistance have been bred into Australian varieties but work against a specific rust species and in some cases are only effective against a limited range of rust strains. "We have identified a ‘DNA marker?that is 99 per cent effective in ...

RNA map provides first comprehensive understanding of alternative splicing

...lonus ataxia) that is also associated with several types of cancers. Since then the laboratory has focused ...implicated as the primary cause, including certain types of cancer and a number of brain and muscle disorders. "Given that the complexity of the brain is ...

Researchers develop technologies to devour food pathogens

...st method uses a laser to detect and identify many types of bacteria, and is about three times faster and one-tenth as expensive as current technology. A second innovation uses chlorine dioxide gas to kill pathogens on produce, fresh fruits and vegetables. This would be a large step up from current techn...

Studies find general mechanism of cellular aging

...blood stem cells. The results show disparate cell types share a common aging mechanism and suggest that aging-related diseases such as diabetes result from a failure of cell growth, said Dr. Norman E. Sharpless, co-author on the three studies and an assistant professor of medicine and genetics at the UNC ...

Researchers to develop active nanoscale surfaces for biological separations

...l is to understand how biological molecules of all types move across the surface of lipid bilayers. "This particular project is focused on DNA, but the approach could potentially be used for separating other biological molecules, such as proteins," Kane said. He envisions immediate applications in genomics...

Firefighters face increased risk for certain cancers

...ignificantly more likely to develop four different types of cancer than workers in other fields. Their findings suggest that the protective equipment firefighters have used in the past didn't do a good job in protecting them against cancer-causing agents they encounter in their profession, the researchers...

Hopkins researchers discover how brain protein might control memory

...ssociation and suddenly the craving returns. These types of long-term associations are memories wired in your brain." Years ago, Worley and his colleagues, studying laboratory rats, found that their brains made lots of Arc protein while the animals were awake and active. In fact, it has been long known...

One signal elicits thousands of answers

... Defects in cellular signaling often occur in many types of cancer (Cell, November 2, 2006). The mammalian cell constantly receives signals from its surroundings to which it has to respond appropriately. Growth factors, for example, can lead to growth of a cell, its differentiation or proliferation. Def...

Sensory feedback during speech: The brain attunes to more than just sound

... sounds to study whether the production of certain types of sound was especially sensitive to somatosensory cues. The researchers found that over time, the subjects in the experiments learned to compensate for the robotic interference, thereby "correcting" the somatosensory feedback the brain receives duri...

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