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Tag: "possibility" at biology news

Man may have caused pre-historic extinctions

...d the arrival of humans from Asia - ruling out the possibility that they were over-hunted by man. One theory had been that a period of climate cooling wiped them out. However, the researchers have discovered that uncertainties in dating fossil remains and the incompleteness of fossil records mean that the surv...

Gene transfer using mutant form of good cholesterol cuts vascular plaque and inflammation

...elated heart disease. Researchers are studying the possibility of treating vascular inflammation and plaque buildup through the transfer of protective genes. "There has been uncertainty and controversy about whether apo A-I Milano is a better form of HDL than the "wild type" (regular) apo A-I in terms of prote...

Parasitic plants sniff out hosts

...cals might be key, our results do not rule out the possibility that other cues such as light or shade may play a...tion of at least one repellent compound raises the possibility of eventually using airborne chemicals to deter plant parasites. Looking forward, they would also l...

New mechanism explains glucose effect on wakefulness

...glucose levels affect firing of orexin "raises the possibility that, besides being important for adaptive responses to starvation, modulation of orexin cells by glucose has a much wider behavioral role, contributing to the continuous daily readjustments in the level of arousal and alertness." The researchers co...

Jefferson scientists identify gene mutation potentially involved in breast cancer initiation

...ournal of Pathology, say their results open up the possibility that Caveolin-1 mutations may be involved in the development of estrogen-positive human breast cancer, which accounts for some 70 percent of all breast cancers. "This is the first demonstration that a specific Caveolin-1 mutation is exclusively con...

Electronic chip, interacting with the brain, modifies pathways for controlling movement

...n muscles, like those in the arms and legs. The possibility that these neural signals can be recorded directly and used to operate a computer or to control mechanical devices outside of the body has been driving the rapidly expanding field of brain-computer interfaces, often abbreviated BCI. The recent Nature...

Most widely used organic pesticide requires help to kill

...omote blood poisoning. "The work also raises the possibility that the genes encoding the (Bt) toxins could be deployed more effectively in transgenic crops by exploiting the role of insect-borne bacteria that enhance insecticidal activity," the Wisconsin team writes in its PNAS report. What's more, the insig...

Study shows how herpes infects cornea, evades immune cells

...e to infect the cell. "This raises the interesting possibility that herpes may be able to evade the immune system defenses in the same way," he said. "Understanding herpes' unusual pathway for infecting the stroma cells opens up new strategies for developing therapies against this potentially blinding disease a...

Recurrence of a flu pandemic similar to infamous 1918 flu could kill 62 million

...57, it is the infamous 1918-1920 pandemic--and the possibility of a recurrence on that scale--that causes the most trepidation. Strangely, researchers still don't know exactly how many people died from this particular strain of the flu virus in that pandemic, and they know even less about how mortality rates...

Mayo Clinic study suggests that a central nervous system viral infection can lead to memory deficits

...and hepatitis A. Researchers were intrigued by the possibility of a link between picornavirus infections and memory loss. Little has been published in this area, Dr. Howe says. In the study, mice were infected with Theiler's murine (mouse) encephalomyelitis virus (comparable to the human poliovirus). Researche...

Like a snail through the intestinal canal

...riction. Despite this, there is nevertheless no possibility of movement. A snail uses the exertions of pressure to change the characteristics of the middle layer, and thus lower the degree of friction, in order to move. In the intestine, however, pressure cannot be exerted, because this would cause the intest...

Insulin receptor stops progression of Alzheimer's disease

...n, had the most overall benefit. "This raises the possibility that you can treat patients with mild cognitive im...ents are in the early phases of AD, there's a good possibility they could get treatment that will help them. It's possible that in the moderate phase, treatment w...

Buildup of damaged DNA in cells drives aging

...h hormones in the progeroid mice and ruled out the possibility that this suppression was due to problems with their hypothalamus or pituitary glands, which regulate growth hormone secretion. Furthermore, they demonstrated that if normal adult mice were exposed to a drug that causes DNA damage, such as a cancer c...

'Killer' B cells demonstrate evolutionary link between fish and mammal immune systems

... mammals. "At this point, we cannot rule out the possibility that small subpopulations of phagocytic B cells, perhaps remnants of those present in fish, are still present in mammals," Sunyer said. Their findings also have an agricultural implication. The current vaccines given to farmed salmon, for example, ...

Researchers discover new gene responsible for brittle bone disease

...ome, you developed the disease. That left open the possibility that the mutation causing OI was spontaneous, that something went wrong for the first time in the gene of the person developing it, and not inherited from parents. The newly discovered gene however is a recessive trait, signifying that the diseas...

West Australian fossil find rewrites land mammal evolution

...erald said. "The fossils of Gogonasus raise the possibility that tetrapods originated not in the northern hemisphere, as is widely thought, but in Gondwana, the ancient southern super-continent, and more specifically Australia. But further discoveries of fossils in Australia are needed to confirm this." ...

High levels of blindness in southern Sudan following years of war

... issue of PLoS Medicine. One article discusses the possibility that the methods used in these (and other) health surveys could over-estimate the level of blindness....

Too mellow for our predatory world

... reduce the number of visitors - possibly the only possibility to create sustainable tourism, thereby ensuring the necessary protection of the unique animal and plant world of the Galápagos....

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

...gravest risks of a manned flight to Mars ranks the possibility that massive amounts of solar and cosmic radiation... illnesses, an inadequate quantity of food and the possibility of "interpersonal tensions" between crew members. Risk 29 addresses the fact that Mars astronauts ...

Otherworldly bacteria discovered two miles down

...ing in the October 20 issue of Science, raises the possibility that similar bacteria could live beneath the surface of other worlds, such as Mars or Jupiter's moon Europa. "These bacteria are truly unique, in the purest sense of the word," said lead author Li-Hung Lin, now at National Taiwan University, who p...

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