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Tag: "animals" at biology news

Controlling wildlife trade key to preventing health crises, study says

...ccording to the study, every year millions of wild animals pass through markets on their way to regional or i...pathogens, and even commonly benign microbes these animals carry are sometimes transmitted to other species, including humans, in the process. Domestic animals...

Agricultural antibiotic use contributes to 'super-bugs' in humans

...hat antibiotic resistant bacteria can move between animals and humans. The exact effects of agricultural antibiotic use on human health remain uncertain, they say, despite extensive investigation. "But the effects may be unknowable, unprovable, or immeasurable by the empirical standards of experimental biol...

Micro RNAs play role in egg making

... eggs had normal miRNA production. (All plants and animals have DICER, the gene the produces miRNAs, so the researchers used a "genetic trick" to generate DICER-less eggs.) In comparing overall protein production between these two groups, the researchers discovered that miRNAs stopped the manufacturing of a...

Old drug shows new promise for Huntington's Disease

...n control mice given water alone. The experimental animals lived 20 percent longer than the control animals, ...udy, in that we used the same drug dose on all the animals as opposed to comparing different doses, but fairly convincing," Massa concluded. "Together, the in ...

Scientists get first glimpse at how plants, most animals repair UV-damaged DNA

...ncluding humans, although all plants and all other animals have it. Greater understanding of how photolyase w...rying to understand how the DNA in plants and some animals can be damaged by UV light, and then ?seemingly ?repaired by visible light. In the 1960s, they ident...

Vaginal gel may provide a new approach to HIV prevention

...ent anti-viral agents in a vaginal gel protect the animals against an HIV-like virus. The research suggests t...in the animals' vaginas. Thirty minutes later, the animals were exposed to high-dose SHIV. The three inhibitors were each effective when used alone and also w...

MBL researchers probe how an ancient microbe thrives and evolves without sex

...ical conclusion that a group of diminutive aquatic animals called bdelloid rotifers have evolved for tens of millions of years without sexual reproduction, in apparent violation of the rule that abandonment of sexual reproduction is a biological dead end. Now, MBL scientists are beginning to understand just ...

US/African project deciphers deadly parasite genome

...(now Zambia) were imported to replace thousands of animals that had been killed during a devastating outbreak of rinderpest. Nobel Prize winning German microbiologist Robert Koch, who had been sent to east Africa to study the disease, was the first to describe the T. parva parasite and made the first attemp...

Scientists and engineers apply nature's design to human problems

...e neuro-mechanical control principles derived from animals to engineer prosthetics and robots. Yen noted that biomimetry even offers inspiration for the way students -- and faculty ?learn. "Like animals, we can learn by playing," Yen explained. "We're looking to nature as our template." WRITER: Jane San...

Costly breeding programs for endangered species pay off

...nd millions of dollars each year transporting rare animals thousands of miles in order to breed them with the...r. In order to simulate small populations of rare animals in zoos, breeding lines were founded by just five pairs of males and female flies. Moreover, because...

Study shows big game hunters, not climate change, killed off sloths

...e "big-game hunters" had a traumatic effect on the animals living there, he said. More than three-fourths of... islands, to reconstruct which kinds of plants and animals -- particularly birds and mammals -- used to live there, we can open up possibilities for restoring ...

Prions rapidly 'remodel' good protein into bad, Brown study shows

...in ailments such as mad cow disease and scrapie in animals and, in rare cases, Creutzfeldt-Jacob disease and kuru in humans. Because similar protein self-replication occurs in neurodegenerative diseases, the findings, published in the latest issue of Nature, may also help explain the progression of Alzheime...

An essential regulator of body weight revealed

...s, the scientists monitored precisely how much the animals ate by keeping them in a cage equipped with a devi...amatic. After treatment with diphtheria toxin, the animals began to eat less and less; by the fifth day, they had stopped eating entirely. Within 6-8 days, the...

Biologist Discovers What May Be World’s ‘Pickiest?Mates

...tial mates before making a final selection. “Most animals sample just a few mates, presumably because search costs override the benefits of lengthy searches,?she said in her paper. But female California fiddler crabs are much pickier, she discovered in her study, checking out male suitors and their bachelor...

New antibody shows promise as cure for anthrax

...rials, Elusys has found that the IgG protects test animals from anthrax when administered both before and aft... to 50 percent of the animals. After 72 hours, the animals not treated with the antitoxin succumbed to the infection, but those that received the treatment wer...

Scientists unpick genetics of first 15 minutes of life

...mals, including humans. "All sexually reproducing animals do the same kind of DNA 'dance' when the DNA from the mother's egg cell and the father's sperm cell meet for the first time," said Dr Tim Karr from the University of Bath (UK) who worked closely with Drs Benjamin Loppin and Pierre Couble from Centre ...

Applying ecological laws to bacteria

...roorganisms follow the same patterns as plants and animals has potential significance in medicine, agriculture and pollution-control. By applying the new insights to the microbial world, researchers may be able to improve the exploitation of vital microbial processes, such as sewage treatment. Dr Christophe...

Gene therapy reverses genetic mutation responsible for heart failure in muscular dystrophy

...D hamsters. Furthermore, all of the untreated LGMD animals died of heart failure or other complications of muscular dystrophy around 37 weeks, while all of the AAV-8-treated LGMD hamsters survived beyond the 48-week duration of the study. "When we began the experiment, we anticipated that the treatment woul...

Amphetamines reverse Parkinson's disease symptoms in mice

...ter. The researchers caution that the findings in animals do not suggest Parkinson's disease patients should...erefore lack detectable levels of dopamine and the animals exhibit all the symptoms of Parkinson's disease for up to 16 hours. Those symptoms included severely...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...tumors with gold-coated nanoshells and exposed the animals to near-infrared light for several minutes. The tumors disappeared within 10 days without damaging any healthy tissue. Future applications Dai points out that the carbon nanotubes also can be delivered to diseased cells by direct injection. "In bre...

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