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Tag: "lose" at biology news

Bigger horns equal better genes

...h are shed every year. They also cause the ibex to lose heat in winter, because their core is heavily vascularized." Found exclusively in the Alps mountain range in Europe, alpine ibex were hunted almost to extinction about a century ago for sport and the purported pharmacological properties of their ...

Runners -- Let thirst be your guide

...hydrate safely,” he says. While a person “needs to lose about 1-2 percent of body water before thirst will reliably remind you to drink, losing that little is not sufficient to cause any significant health problems,” Verbalis says. “Many of us are often dehydrated to such small degrees, and it does not si...

Fat fish put obesity on the hook

...lerate the development of new drugs to help people lose weight and keep it off. According to correspondin...adipostat is what makes it difficult for people to lose weight and keep it off. “Americans—even children—are getting fat at an alarming rate,” said Ge...

HIV and malaria combine to adversely affect pregnant women and their infants

...heir placentas. They found that HIV-infected women lose these antibodies and again become susceptible to the ravages of PAM. The findings, according to Kain, may help in the development of PAM vaccines. "This is only the first step in creating therapeutics to treat this devastating disease," he stresse...

Hawaiian treasure, macadamia nuts good for the heart

... for each participant so that they did not gain or lose weight during the study. Both diets were matched for total fat, containing 33 percent calories from total fat. The Heart Healthy diet with macadamia nuts had 7 percent saturated fat, 18 percent monounsaturated fat and 5 percent polyunsaturated fat. T...

Statin treatment improves spatial memory in mouse models of Alzheimer's

...lzheimer’s like disease as they age. In fact, they lose their memory by nine months of age. These animals, together with regular mice without the beta amyloid genes, were acclimated for one week, with as much food and water as they wished, then divided into four groups. Half the “Alzheimer’s mice?and half...

Scripps research team sheds light on long-sought cold sensation gene

...temperature." The TRPM8-deficient mice did not lose their ability to feel pain in response to extreme cold, as evidenced by responses similar to wild type mice when exposed to -1° C cold plates. This suggests that other genes are responsible for this facet of cold sensation. Though cold can be unpl...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

... in acute heart failure or in inhalers for asthma, lose their effectiveness over time. Nitric oxide is a ...drugs for such diseases as heart failure or asthma lose their effectiveness over time. Almost half of all drugs on the market today, as well as many horm...

Corals -- More complex than you?

...light on evolution. It appears that all animals lose genes during evolution; those with fast generation turnover times ?like fruit flies ?shed genes particularly fast. Corals which take at least 5years to reach sexual maturity (compared with the laboratory fruitfly whose generation lasts only 3-4 weeks...

Invasion of the island bats

...r species around, island organisms were thought to lose their competitive edge and so they hardly ever re-colonized the continent from which they originated. These views suffered a severe blow recently when evolutionary studies of birds of the South Pacific and Caribbean lizards uncovered at least thr...

Molecule that destroys bone also protects it, new research shows

.... In fact, humans with neutrophil defects usually lose all their teeth by the time they are 20 due to severe periodontal disease. "It turns out that IL-17 is really important in regulating neutrophils by causing other cells in the vicinity to recruit these infection fighters to the infection site," Ga...

DNA-damage test could aid drug development

...lls are handy for this because such cells normally lose their nucleus during the last stage of red cell formation, and DNA-damaged precursors generate red blood cells containing an easily detected "micronucleus" consisting of fragments of nuclear DNA. Unlike the current procedure, which injects the compou...

Scientists identify molecular cause for one form of deafness

..., they point roughly along the same direction ?but lose their positional order. These nematic liquid crystals are commonly used in watch displays and laptop displays. Wong and his colleagues also found that a mixture of mutant espin and normal espin would prevent the structural transition from occurring...

When your brain talks, your muscles don't always listen

...acity to contract or 'twitch' as we grow older. We lose fast-twitch muscle fibers as we age." However, there are steps we can take to preserve this critical motor capacity, according to Knight. "After power training with weights, we see an increase in firing rates," Knight said. "For safety, we're c...

Smell may outlast other senses

...in the enjoyment of food flavours. “People who lose their sense of smell, particularly the elderly, are at risk of poor appetite and subsequent poor nutrition. Smell is also an important warning sense ?telling people when food is not fit for consumption.? Healthy women were shown to have a more se...

Bacteria control how infectious they become, study finds

..., but not without NusG. Yet without RfaH, bacteria lose the ability to infect. In previous laboratory experiments, the researchers found that pathogens lacking RfaH grow at much slower rates. “Cells usually don't die when RfaH use changes,?Svetlov said. “Rather, bacteria seem to manipulate the protein,...

Scientists discover how body fights to control spread of cancer

...breast, lung and colorectal cancer, infected cells lose growth control and eventually form tumours at these sites. If caught early these tumours can be effectively removed surgically. However, when the cancer cells have invaded the blood, the effectiveness of surgery is reduced. Cancerous cells that h...

MU researcher placing eye implants in cats to help humans see

... that Narfstrom is working with typically start to lose their sight when they are around one or two years old and are completely blind by age four. To date, Narfstrom has performed surgeries in severely visually impaired or blind cats. During the surgery, Narfstrom makes two small cuts into the sclera...

Vasectomy may put men at risk for type of dementia

... recalling and understanding words. In PPA, people lose the ability to express themselves and understand s...y subway system. By contrast, Alzheimer's patients lose interest in their hobbies, family life and may become idle. As PPA progresses over a number of year...

Researcher to study astronaut bone loss for space biology agency

...lose bone because, in the absence of gravity, they lose the ability to make enough new bone cells to replace old cells that die in the normal course of bone metabolism. After their return to Earth's gravity, an event known as reloading, bone cell production can take months to return to normal. During tha...

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