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Tag: "quite" at biology news

UGA study explains peaks and troughs of dengue epidemics

... a period of several years, but they've never been quite sure why. With the incidence and range of the potentially deadly mosquito-borne illness increasing, understanding the factors that influence these epidemics has never been more important. A new study by researchers at the University of Georgia sugg...

Technique speeds up detecting, treating wound bacteria

...ent is necessarily empiric. "When the patient is quite ill, clinicians necessarily use a broad spectrum (antibiotic), hoping not to overlook anything," Finegold said. "The resulting overuse of antibiotics definitely contributes to antibiotic resistance." According to the Centers for Disease Control and...

Study finds how organs monitor themselves during early development

... such as the mouse, where similar studies would be quite difficult to carry out," says Dr. Lehmann. Genetics research is revealing commonalities across species; the fruit fly delivers cues. It is an animal in which processes are first discovered and which are later confirmed in humans. "Evolution works...

Study reveals how ADHD drugs work in brain

...eds like Adderall, Ritalin and Dexedrine because - quite simply - they work better than anything else. ADHD drugs fall into a class of medications known as stimulants. ADHD stimulants boost levels of two neurotransmitters, or chemical messengers in the brain, known as dopamine and norepinephrine. Dopamin...

How plants avoid feeling the burn

...kable experimental tour-de-force and the result is quite unexpected," said Lindsay, who directs Fisher's work in the Biodesign Institute's Center for Single Molecule Biophysics. "Carotene was regarded as the poster child for this molecular mechanism, but it turns out that a much simpler mechanism works jus...

NASA technology helping injured US troops

...urs are bedridden and have not used their legs for quite some time. Their legs cannot support their body weight." Using SAM reduces the pressure on the legs, and allows them a chance for increased exercise until they are strong enough to stand on their own. "SAM helps us to help them strengthen their whole...

Rehydrate -- your RNA needs it

...cule and modifies the structure elsewhere, even at quite a distance," Walter said. Water facilitates the process by increasing the number of hydrogen bonds and making the ribozyme behave as an interconnected whole. Walter and coworkers also found evidence that water is directly involved in catalyzing re...

UF scientists restore sight to chickens with blinding disease

...ut it really isn't," Semple-Rowland said. "It took quite a long time to build the vector, develop the injection procedure and figure out how to hatch the eggs. By doing the injection early during development, we actually treat the cells before they become photoreceptors." Infants with LCA1 would receive ...

Bird flu study highlights need to vaccinate flocks effectively

...omes ever harder to detect the spread of avian flu quite simply because fewer birds die. The result is increasing amounts of bird flu virus contaminating the birds' surroundings without farmers realising it. In practice, it is very hard to protect more than about 90 per cent of the birds in any given f...

New egg freezing technique offers hope to hundreds of women

... could be the presence of vacuolisation. This is a quite non-specific feature commonly found in cells that are responding to an injury and, even in absence of other alterations, might lead to an impairment of the developmental potential of the frozen-thawed oocytes. "As far as the other possible alteratio...

3-D model reveals secrets of metastasis

...searcher Muhammad Zaman discovered that cells move quite differently in three dimensions. His study, which ...t MIT and the imaging processing and analysis went quite quickly. "Muhammad was successful for two reasons," says Matsudaira. "His computational model pred...

UCLA study of community health project shows how group dynamics affect fitness, eating habits

...een baseline and post-intervention assessment were quite low for the 12-week curriculum (30 percent to 37 percent retention) but substantially higher for the six-week offering (66 percent attendance and 60 percent to 92 percent retention). ...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...contains a very sensible early metabolism." "It is quite possible," Ferry says reverently, "that this could be the first metabolic cycle." As in virtually every metabolic reaction on Earth, the energy produced by these reactions is stored in a molecule called ATP. The Ack enzyme catalyzes the synthesis of...

Leptin found to control appetite and limb development in frogs

...sequence for the "obese" gene that makes leptin is quite different between frogs and humans, so Denver's lab had some puzzles to solve to successfully clone the frog gene. But once they solved those issues and put the gene into E. coli bacteria to make quantities of leptin, the frog protein turned out to b...

A single sugar found responsible for an antibody's ability to treat inflammation

... Ravetch says. "IgG can shift from a state that is quite inflammatory to a state that is actively anti-inflammatory by just changing a sugar." This switch occurs during a normal immune response to a foreign substance, shifting the IgG antibodies from an anti-inflammatory state to one that is pro-inflammat...

DNA to the defense

...e's group showed that trypanosome chromosomes were quite variable in size. "The range of size variation we observe in African trypanosomes far exceeds anything reported in other organisms to date," Melville says. "This, coupled with the potential size of the VSG repertoire in these huge subtelomeres su...

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

...ear suddenly in the fossil record and then radiate quite rapidly. Technically known as angiosperms, "flowering plants exhibit a number of evolutionary innovations that appeared rapidly, including novel structures like carpels and primitive petals and sepals, the sine qua non of flowering plants," dePamphi...

Eco-friendly bug sucker

...for fruit and vegetables has been developed, which quite literally sucks the life out of bugs. This method could be used in place ozone-depleting chemicals, like methyl bromide, which are currently used to sterilise fresh produce. The technique, called metabolic stress disinfection (MSDD), was developed ...

Potato blight pathogenicity explained by genome plasticity

... response in plants," adds Govers. "Effectors are quite common in fungal and bacterial plant pathogens, including Phytophthora . But in our case, the gene appears to produce a large regulatory protein that exerts its effect by regulating the expression of other genes, possibly effector genes." While th...

What controls stickiness of 'smart' chromosomal glue

...elease chromosome pairs from one another's embrace quite differently during meiosis and mitosis. In mitosis, cohesins release chromosomes along their entire length simultaneously. However, in the initial stage of meiosis, cohesins first release only the "arms" of chromosomes, still holding the chromosomes ...

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