Tag: "losing" at biology news

Trouble for the world's turtles

...ics and conservation. "We are on the brink of losing a group of animals that has managed to survivethe upheavals of the last 200 million years, including the great extinctionepisode that eliminated the dinosaurs," said Dr. Russell Mittermeier, presidentof Conservation International and an expert on tur...

Biologists predict more marine disease

... familiar ones that overstressed marinelife may be losing its natural ability to fight. "The combined effects of rising temperatures, human activity and pollution areproducing a a volatile mix that may threaten tropical corals and temperatespecies alike," said C. Drew Harvell, a Cornell University associa...

Hormonal recall

...o in the past. "They weren't demented, theyweren't losing their jobs or unable to function," says Sherwin. "Nonetheless itwas a documentable decrease." Sherwin has also looked at a group of women in their early thirties who haduterine tumours. Because the growth of these tumours is promoted by oestrogen,the...

Mutation in PTEN gene can cause cancer and autoimmune disease

...y to program itsdeath, researchers have found that losing function of only one of the pair isenough to disrupt this vital signaling mechanism. Their findings, published inthe September 24 issue of the journal Science, show that inactivation of justone PTEN gene allows some white blood cells to accumulate u...

OHSU scientists locate 'fat thermostat' in brain

...wn how the brain reacts to a change in diet andwhy losing weight can be a battle for many. "When you lose weight, the bodythinks there's something wrong," said Cone. "The body thinks you're undergoingstarvation or disease and it initiates a number of responses to prevent you fromlosing weight and even to h...

Rainforest birds keep dying out long after logging stops

Fragmented rainforests can keep losing biodiversity for a century, according tonew research in the October issue of Conservation Biology. While the bad news isthat many more species are likely to go extinct, the good news is that we can save them if weact now. "There is no room for compl...

Biologist calls 30% of African primates 'living dead'

...able "extinction debt". For instance, even without losing anymore forest, six countries (Benin, Burundi, Cameroon, Ivory Coast, Kenya and Nigeria) could lose a third tohalf of their forest primate species within decades. Actual extinctions could bemuch higher because West Africa is expected to lose 70% and ...

Rett Syndrome traced to defective gene 'silencer'

...fe. Then they begin to regress,sometimes abruptly, losing their burgeoning skills in muscle control andcommunication. Eventually the disease stabilizes, and the girls grow up withextensive mental retardation and a propensity to sit and wring their hands. "I saw my first RTT patient as a pediatric neurology...

UVic creates research chair on drinking water ecology

...y true in B.C., he says. "The rest of the world is losing its water quality and is being forced to install water treatment plants, but most water utilities in B.C. still supply water with minimal treatment. We have to find ways of managing and protecting our water sources." The $4.6 million chair will take...

Desert bees hedge their bets, wait for the wet

..., which would be the equivalent of a 200-pound man losing 28 pounds. The female larvae lose only about 7 percent of their body weight during diapause. This published study, "Emergence dynamics and bet hedging in a desert bee, Perdita portalis, " was funded by two Theodore Roosevelt memorial grants from th...

Feeding the world by cleaning the air: study ties heavy regional haze to reductions in China's crop production

...n the yields of these crops. "China is already losing 10, 20 or even 30 percent of its crop production to haze," he said. "Controlling the sources of the haze represents a potential way to increase crop production because the technology exists to control air pollution." The estimates ...

El Niño triggers tropical forest reproduction

...is supposedly off-limits to logging, the forest is losing the ability to regenerate itself," Curran said. Because seed predators can't find food outside the park, they move inside to eat the dipterocarp seeds before they germinate, according to Curran. Massive forest fires on nearby logging plantations...

Gene found for Papillon-Lefevre syndrome--a disorder affecting skin and gums

...e also affects permanent teeth, with most patients losing all of their teeth by age 20. People with PLS also tend to have an overproduction of skin cells in their hands and feet causing flaky, scaly skin. First described by Drs. Papillon and Lefevre in 1924, PLS is an extremely rare disorder, with a single...

Death risk higher for elderly women who lose weight, says University of Maryland School of Medicine study

...r findings run contrary to the popular belief that losing weight always makes you healthier," says Matthew W...of a woman's initial BMI, investigators found that losing weight always increased the risk of dying. "Dieting or trying to return to an "ideal" weight may no...

Common enzyme deficiency may jeopardize pregnancies

...ecause they may be unknowingly conceiving and then losing their babies very early on -- or they have more miscarriages or have more children with birth defects." Screening for G6PD deficiency is a simple process, Wells says, and if studies show it causes similar problems in human pregnancy then potential ...

UF nutritionist: Better to vow to eat healthy for new year

...t. Those are good resolutions," Bobroff said. "The losing weight resolution is often a source of great frustration for people, so I would go for the healthy lifestyle. This is something people can control." Bobroff said anyone planning to make lifestyle changes should go slowly and not try to do too mu...

Researcher finds alternatives to antibiotics for growing chickens

... of antibiotic-resistant strains means doctors are losing their ability to cure human infections. One controversial aspect of the antibiotic-resistance issue has been whether the routine feeding of antibiotics to agricultural animals contributes to the increase in antibiotic-resistant strains. European ...

UNC-CH researchers to comb N.C. mountains for iron problem chiefly affecting Scots, Irish

...s disorder have the protective effect of regularly losing red blood cells." Otherwise healthy Western diets may make hemochromatosis worse, she said. Such diets are heavy in iron, and most cereals are fortified with the metal even though that's unnecessary. "One of the reasons we're doing this work is be...

Deadly to cattle and humans, prions may help other organisms survive, researchers find

...y of a specific protein indefinitely, without ever losing the potential to restore its original activity, they point out. If the prion form of the protein is passed on to progeny, this new trait will be passed on as well. Normally, heritable changes in protein function result from mutations in an organism'...

Study: exercise, even without weight loss, is good for the heart

...e three-month study. In fact, if patients started losing weight, researchers altered their diets to maintain a constant weight. The patients enrolled in the trial had body mass index (BMI) ranging from 25 to 35. It is estimated that about 55 percent of Americans have a BMI greater than 25, and half of the...

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