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Tag: "sometimes" at biology news

Danish researches solve virus puzzle

...ding can proceed. During this process the ribosome sometimes slips backwards and, like the letters making up a word, it now reads a new RNA sequence and hence uses another recipe to construct the protein. The researchers have found that the stronger the pseudoknot the more often this backwards slipping happens...

Ancient genes used to produce salt-tolerant wheat

...ghting the fact that the science of plant breeding sometimes relies on an element of good fortune, we were lucky to find the durum variety with the ancient genes straight away, otherwise we might have been looking for years." The team used their knowledge of the two genes to construct molecular markers, wh...

A 'traffic light' for neurons means 'go' for improving brain research

...by generating patterns of signals-sometimes on and sometimes off like the 0s and 1s of binary computer code-flashing blue and yellow lights in these patterns could compel neurons to emit messages that correspond to real neural instructions. In the future, this could allow researchers to test and tune sophistic...

Cambodian vulture nests offer hope for species

...ting of large-bodied mammals, loss of habitat, and sometimes direct hunting. The Cambodia Vulture Conservation Project has already been successful in helping stem the decline in Asia's vultures in Cambodia through a combination of scientific research, direct protection, food supplementation and awareness-r...

Enhancing activity of marijuana-like chemicals in brain helps treat

...tions, progressing to muscle rigidity, tremors and sometimes complete loss of movement. The condition affects 1.5 million Americans, according to the National Parkinson Foundation. "It turns out that the striatum is much more complicated than imagined," said Malenka. The striatum consists of several diff...

Lithium builds gray matter in bipolar brains, UCLA study shows

...erall gray-matter volume was significantly higher, sometimes by as much as 15 percent. Unfortunately, said Bearden, there is no evidence that the increase in gray matter persists if lithium treatment is discontinued. "But it does suggest that lithium can have dramatic effects on gray matter in the brain," ...

Antifungal drug kills TB bug

... the human immune system and to survive long-term, sometimes unnoticed, in the body. We also realised that these peculiar features of the TB bacterium must mean that there are ‘unusual?aspects of its composition and biochemistry that set it apart from most other bacteria and that could provide new targets for ...

Mailman School of Public Health researchers report blood DNA can be early predictor of liver cancer

...including aflatoxin B1, a dietary mold contaminant sometimes found in peanuts and corn; polycyclic aromatic hydrocarbons, ubiquitous environmental contaminants; and 4-aminobiphenyl, a carcinogen found in cigarette smoke, are also associated with the development of HCC. While HCC incidence is highest in East A...

New research may overturn conventional wisdom on drug-resistant tuberculosis

... with a new strain that is already drug-resistant, sometimes against multiple drugs. The authors of the new study, Qian Gao, PhD, and coworkers in Shanghai, China and elsewhere, used molecular genetics and drug susceptibility testing to investigate patients with TB who were treated in Shanghai hospitals du...

Scientists identify specific enzymes that make meningitis hard to fight

...ich take hold quickly and are difficult to treat - sometimes resulting in extreme measures such as limb amputation. When the meningitis bacteria enter the bloodstream, the body's natural defences send white blood cells to fight the infection. They ingest the bacteria and subject them to oxidative stress. O...

Killing the messenger RNA -- But which one?

...eotides in length, are able to effectively silence sometimes large sets of genes. They do this by specifically binding to and neutralizing another form of RNA called messenger RNA, responsible for conveying the information from genes to the cellular machinery that uses that information to create proteins, the ...

Manual dishwashing study digs up dirt on dish cleanliness

...If those dishes aren't thoroughly washed, they can sometimes cause food-borne disease outbreaks. After letting the food dry on to the dishes for an hour—a plausible wait in a busy restaurant dish room—they gave each utensil a few scrubs per side and measured the amount of microscopic organisms still clingin...

Brain works more chaotically than previously thought

...or developing new drugs. Yet, why can glutamate sometimes be so dangerous? When an epileptic fit occurs, the nerve cells "fire" very rapidly and fiercely. In this event so many impulses run through the axons that large quantities of glutamate are released all at once. "In these concentrations the neurotrans...

MIT device draws cells close -- but not too close -- together

...he gap setting because at shorter distances, cells sometimes migrate across the gap and end up touching. And at wider distances, some soluble signals drop off. Bhatia and Hui have used the new device to study liver cells. The two found that to get liver cells to express specific liver functions, they needed...

NASA snow data helps maintain nation's largest, oldest bison herd

...ff of private property, back onto public land, and sometimes capturing bison to prevent them from commingling with neighboring livestock. "Our goal is to provide the latest snowpack information to park officials," said landscape dynamics expert Fred Watson, principal investigator of the project and an assis...

Trying to control pain can be a double-edged sword, say scientists

...t job, find the best partner," says Dr Wiech. "But sometimes we should accept what we have and make the most of it. Rather than constantly battling pain, our research supports the view that it is better to provide a patient with the tools to cope with his or her persistent pain." The findings are welcomed b...

Gladstone investigators identify a new protective action for the powerful anti-HIV factor, APOBEC3G

...ls ?the immune system cells targeted by HIV -- are sometimes so susceptible to HIV infection and at other times are highly resistant. Scientists have known that resistant CD4 T cells, called "resting cells," are made up predominantly of CD4+ T cells that are in an inactive state, awaiting a stimulus to move...

Why don't all moles progress to melanoma?

...ime, they are nothing but a cosmetic nuisance. But sometimes pigment-producing cells in moles called melanocytes start dividing abnormally to form a deadly form of skin cancer called melanoma. About one in 65 Americans born this year will be diagnosed with melanoma at some point during their lifetime. Scien...

Triple threat: World fin trade may harvest up to 73 million sharks per year

...hark, which typically are sliced off as the shark, sometimes still alive, is thrown back into the ocean. The shark fin trade appears to be keeping pace with the growing demand for seafood--up five percent per year in mainland China. Determining whether shark populations can continue to withstand the magnitud...

New gene linked to bipolar disorder

... about oneself, feel hopeless about the future and sometimes ending up in a depressive stupor in bed, unable to move, eat, drink or talk. People with bipolar disorder may also experience extreme mood highs, overactivity, increased libido, sleeplessness and grandiose delusions....

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