Tag: "extra" at biology news

Abnormal chemical bonds cause bleeding disorder

... bonds last significantly longer than normal. That extra time allows many additional bonds to form, which stabilizes the interaction and locks the proteins and platelets together. "It's not just a brief touch-and-go," says Diacovo. "Rather, one bond forms and before it breaks, two, three and four more hav...

New study sheds light on frog malformations

The emergence of mutant frogs with extra arms and legs may smack of a low-budget sci-fi scr... up with unusual malformations, such as missing or extra limbs. A number of causes have been suggested to explain the malformations, including exposure to c...

Aborigine study suggests body mass index guidelines should be lower to block diabetes

... healthy people, is a better indicator of how much extra weight a person carries around as fat than their weight alone because, obviously, people of the same ages and weights vary considerably in height." In the new study, Daniel worked with Drs. Kevin Rowley of the University of Melbourne, Robyn McDermott...

Obesity...by choice

...ailed to thrive if given one cup of each and three extra cups of carbohydrate or fat. Rats given five bottl...ard choices of nutrients, some rats received three extra cups of each. The experiment was terminated after eight days because four of seven rats given ext...

Protein causes muscle wasting syndrome in mice

...s, obtained by implanting cells engineered to make extra myostatin into adult mice, support the idea of targeting myostatin to find potential new treatments for muscle-wasting diseases like muscular dystrophy, the team from Johns Hopkins and pharmaceutical company Wyeth report in the May 24 issue of Scienc...

'Nature' report: Researchers genetically alter mosquitoes to impair malaria transmission

... value of this research is that it will provide an extra weapon, Jacobs-Lorena said. Drugs and insecticides exist and help, but they are not very effective because of resistance. Vaccines are very hard to develop. What we need is a multipronged approach. The more weapons we have, the more effective i...

Researchers uncover biochemical connection between high-fat diets and increased colon-cancer risk

...oiting the research might not be so simple. Taking extra vitamin D would stimulate more activity in the vitamin D receptors, but that also would cause the body to absorb more calcium. Ingesting too much vitamin D can lead to hypercalcemia, a toxic condition that occurs with excessive calcium buildup. Mange...

End of 'free ride' on ecosystem CO2 absorption

...owing Eastern forests are currently taking up that extra carbon dioxide, so we're really getting a free rid...at it has, because the incremental benefits of the extra CO2 get smaller and smaller relative to other nutrient constraints," he said. The policy implication...

Physics tip sheet #13 May 15, 2002

...tract/PRL/v88/e215004 2) Neutrinos make for small extra dimensions H. Davoudias, P. Langacker and M. Perel...cle physics and cosmology often require the use of extra dimensions that might be curled up to small scales. The existence of oscillating neutrinos (as recen...

Extreme climate variance sped extinction of local butterfly populations, researchers say

...efore one in an unfavorable microclimate, and that extra time may mean the difference between life and death. The future doesn't look good for the Bay Area's remaining checkerspots. The source population probably will not be able to repopulate Jasper Ridge, Boggs says. Morgan Hill is too far away for butte...

Manganese blocks HIV replication; Lab finding points to potential new class of HIV treatments

...sium was bound to them," says Boeke. "But a little extra manganese changes the activity of the enzyme." Normally, charged magnesium ions outnumber those of manganese by the thousands inside cells. Having just three times more manganese than normal can cut the activity of HIV's reverse transcriptase in half...

UCR scientists developing process to convert wet bio-waste into energy

...ll afford us an excellent way to avoid much of the extra expense imposed by the increased restrictions on land application." Partnering with local government agencies benefits CE-CERT as well, said Joseph Norbeck, professor of environmental engineering at UCR and director of CE-CERT. "We've worked with a n...

Ten new candidate genes associated with salt sensitivity and hypertension are identified in rats

...e pressure on the walls of the blood vessels. This extra work weakens and wears out the heart. Studies over the years have shown that people have adapted and can remain healthy on sodium intakes of 200 mg or even less. But with the advent of fast foods, convenience foods and processed foods, there has been...

Angry young men prone to premature heart disease

...says, evidence points to stress-related release of extra catecholamines, compounds occurring naturally in the body that serve as hormones or transmitters of messages. These substances, such as adrenaline, prepare the body to meet emergencies such as cold, fatigue and shock, by constricting blood vessels a...

Widespread amphibian deformities caused by parasite

... alarming increase of physical deformities such as extra legs in frogs, toads and other amphibians in the w...e form of missing digits or portions of a limb, or extra limbs. Researchers have shown in laboratory experiments that such deformities can be caused at high ...

Amphibians and crippling parasites

...ers and other amphibians found with missing limbs, extra limbs, and skin webbings has increased. The shrinking populations of many North American amphibian populations underscore the need to understand the causes and implications of this phenomenon. Now a new study suggests that a parasite may be to blam...

Scientists close in on trigger of insulin resistance

...sage were unlikely to work properly when coated in extra sugar. Type 2 diabetes, the most common form in ad... one's blood sugar levels, finding a way to remove extra sugar tags may help treat or prevent diabetes someday, the researchers suggest. "Textbooks frequent...

Bug vs. bug: scientists use microorganisms to target destructive termites

...termites slowly. This approach gives the pathogens extra time to be distributed to more of the colonies members by the termites themselves in an effort to destroy the entire colony, they said. The microorganisms appear to work by literally eating away at the termites, most likely through an enzymatic deg...

K-State professors make discovery in pesticide-resistant bugs

...e same. The gene hadn't mutated and there weren't extra copies of the gene in the resistant greenbugs. What they found instead is that the resistant greenbugs simply pump out the enzyme at a higher rate. Insecticides still block the AChE enzyme, but the increased amount of the enzyme requires more of the ...

Megavitamins may help treat many genetic diseases, could tune up everyone's metabolism

...ice were more energetic and had better memory. The extra acetyl-L-carnitine, he said, compensates for the defective binding of the enzyme, carnitine acetyltransferase. Together, these two play a key role in burning fuel in mitochondria. Ames first suspected that enzyme/coenzyme binding might be at the root...

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