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Tag: "rodent" at biology news

Hurricane aftermath: Infectious disease threats from common, not exotic, diseases

...may be caused by exposure to water contaminated by rodent urine and can be treated successfully with antibiotics. Over the long term, mold may also pose a threat. Mold growth is an indicator of excess moisture, and much will need to be done to dry out New Orleans and clean up mold growth. Some environm...

Why do aneurysms form? New studies suggest leading role for white blood cells

...ocess. The researchers exposed a small part of the rodent aortas to a chemical that breaks down blood vessel tissue, then studied what happened in the rodents that had altered neutrophil systems and in comparison rodents that were normal. In both cases, says senior author and U-M vascular surgeon Gilbert U...

For first time, brain cells generated in a dish

... McKnight Brain Institute have created a system in rodent models that for the first time duplicates neurogenesis -- the process of generating new brain cells -- in a dish. Writing in today's (June 13) Proceedings of the National Academy of Sciences, researchers describe a cell culture method that holds the...

Caloric restriction won't dramatically extend life span in humans: UCLA research

..., citing a finding from his dissertation. A normal rodent reaches maturity at one month of age, and begins reproducing its body weight in offspring every month and a half. If humans shut off reproduction by severely limiting calories, "our reduction in wear and tear on the body is minimal," he said. The ro...

Mosaic mouse technique offers a powerful new tool to study diseases and genetics

...ed method for creating a "genetic mosaic mouse"--a rodent whose body is genetically engineered to produce small clusters of cells with mutated genes. The new technique, called Mosaic Analysis with Double Markers (MADM), was developed in the laboratory of Liqun Luo, professor of biological sciences at Stanf...

Scientists discover odd-ball rodent

...in Southeast Asia have discovered a long-whiskered rodent with stubby legs and a tail covered in dense hair. But don't call it a squirrel. Or a rat. Because it's actually more like a guinea pig or chinchilla. But not quite. In fact the new species, found in Laos by scientists from the Wildlife Conservation ...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

... The effect in vivo was dramatic. Blocking LexA in rodent models of E. coli infections halted the growth of antibiotic resistance. Three days after being subjected to antibiotics, the rodents showed no level of resistance to rifampicin or ciprofloxin, when they harbored a variant of LexA that was catalytica...

Vampire bats keep out of trouble by running

...ster South American athletes such as the agouti, a rodent about the size of a hare, which might wake up and take a swipe at the nocturnal visitor. It remains unclear exactly what the native prey were before the introduction of cattle, he adds. The Cornell zoologists plan to go a step further and compare th...

Gene therapy for Parkinson's disease moves forward in animals

... the substantia nigra. That's been shown before in rodent models, but it's encouraging to see data that it works in higher animals like monkeys." Meanwhile, in separate experiments with rats, researchers used gene therapy to completely reverse abnormal movements called dyskinesias in some of the animals, s...

Scientists reveal molecular secrets of the malaria parasite

...ed genomes (the human malaria P.falciparum and the rodent malarias P. yoelii, P. chabaudi and P.berghei), the scientists found that the major differences between themalarial species are found in the virulence factors (which are at thechromosome ends) while the "housekeeping" genes are almost totallyunchange...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

... the substantia nigra. That's been shown before in rodent models, but it's encouraging to see data that it works in higher animals like monkeys.?/p> Meanwhile, in separate experiments with rats, researchers used gene therapy to completely reverse abnormal movements called dyskinesias in some of the anim...

A gene's first 'kiss' sets off that affair known as puberty

...y, as well as learn about KiSS-1, which in earlier rodent studies had been identified as a molecule that activates a signal receptor of GPR54, the researchers looked to the nonhuman primate, the only animal with a reproductive system in common with the human's. The onset of puberty becomes official when go...

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