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Tag: "individuals" at biology news

Stroke symptoms common among general population

.../Archives journals. Using brain imaging to screen individuals without a history of stroke reveals that many have...icle. One previous study found that 11 percent of individuals age 55 to 64, 22 percent of those ages 65 to 69 and 43 percent of those older than 85 years show evi...

Scientists design simple dipstick test for cocaine, other drugs

...sponders or emergency room staff to quickly screen individuals for a variety of drugs and other chemicals." Lu said. Aptamers are single-stranded nucleic acids that can bind to specific molecules in three-dimensions. For each molecular target, such as cocaine, a corresponding aptamer can be selected from a lar...

Study IDs protein that inhibits HIV from growing in cell cultures

...hrough bodily fluids, as is HIV, many HIV-positive individuals have evidence of past or present infection with GBV-C. Stapleton and Xiang first began studying the GBV-C and HIV connection because they were skeptical of earlier studies published in the mid-1990s. "It was a strange story," Stapleton said. "W...

Scientists win grants to develop $1,000 genome sequencing technology

...nome sequenced. Determining the genome sequence of individuals is considered crucial to understanding and routinely treating hundreds of inherited diseases, predispositions to other diseases, and cancers. In order to spur the development of fundamentally new and innovative technologies necessary to reduce the ...

New study suggests promising drug combinations for sleeping sickness

...vious that the death rate was much higher amongst individuals receiving one of the combinations, so the trial was stopped. In the trial, the cure rate for nifurtimox-eflornithine was over twice that for melarsoprol-nifurtimox and substantially higher than that for melarsoprol-eflornithine. The rates of ad...

Inheritance outside DNA

...ing of IGF2 has been associated statistically with individuals who have personal and familial histories of colorectal cancer. Turning to mice that modeled the loss of IGF2 imprinting, Feinberg found an increase in frequency of tumors in mice who also had mutations in a cancer-associated gene called Apc. In the m...

T for two: Scientists show how immune system chooses best way to fight infection

... during infection. Regulatory T cells, if given to individuals receiving transplants, may help suppress the rejection response. Now, a team of researchers has discovered a novel mechanism determining whether a maturing T cell is likely to emerge from the thymus as an effector cell or a regulatory cell. The re...

Some butterflies travel farther, reproduce faster

... environment influences genetic change by favoring individuals with certain traits, said lead author Howard W. Fe...r status quo sisters and brothers. They found that individuals that established new populations mate sooner, lay more eggs and have a different form of an enzyme i...

LSU professor discovers new species

...the rainforest is to look under logs. We found two individuals of the new species under one log and two more under another." With more than 15 years of fieldwork experience behind him, Austin knew immediately that he had found a new species. After collecting the lizards, he and Das began the difficult work of pr...

Leading reason for corneal transplants comes into focus

...families with relatively large numbers of affected individuals and trace genetic traits co-inherited or "linked" with the disorder. Researchers search for a common location for all the linked traits until they wind up with a single chromosome address. In his latest study, Gottsch used not only linkage analys...

Poor athletic performance linked to vitamin deficiency

Active individuals lacking in B-vitamins ?including college athletes ... of cells, including red blood cells. For active individuals a marginal deficiency in the nutrients may impact the body's ability to repair itself, operate effic...

New HIV statistics indicate increasing toll of AIDS on African American community

...n American ?are unaware that they have HIV. These individuals are not receiving life-saving medical care and may unknowingly transmit HIV to sex- and needle-sharing partners. In addition, African-Americans are diagnosed at later stages in the disease more often than other racial/ethnic groups, diminishing medi...

Altered perception of reward in human cocaine addiction

...I-RISA) model, which postulates that drug-addicted individuals disproportionately attribute salience, or value, t...s subjected cocaine-addicted and non-drug-addicted individuals to a range of tests of behavior, cognition/thought, and emotion, while simultaneously monitoring the...

Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack

...sease, and that any delay in quarantining infected individuals would take a much greater toll on the community than failing to pre-vaccinate potential cases. To conduct the study, Longini and colleagues created a computer model that calculated the spread of smallpox via aerosol dissemination ?the most likely c...

Stanford discovery may help predict when toxoplasma can be deadly

...ve no symptoms, it can cause severe infections in individuals with compromised immune systems. In addition, women infected for the first time while pregnant can pass the organism to their fetuses, potentially resulting in sight and hearing problems as well as learning disabilities. The new findings have imp...

Experimental cancer drugs counter muscle deterioration seen in muscular dystrophy

...ice will translate into an effective treatment for individuals suffering this disease," cautions Puri, who has devoted over 10 years to the study of muscular dystrophy. "It is difficult to predict how long it will take before these studies will be translated into therapies for human patients." "Our future st...

Pleasure and pain: Study shows brain's 'pleasure chemical' is involved in response to pain too

...iences pain ?and that this response varies between individuals in a way that relates directly to how the pain mak...pants, the scans also revealed differences between individuals in the level of their dopamine response and their self-rated pain and emotional response. This kind ...

Mirrors in the mind: New studies elucidate how the brain reflects onto itself the actions of others

... parts carrying out the actions. For example, when individuals read literal phrases such as "biting the peach" or "biting the banana," some brain areas activated that were also stimulated by videos of fruit being bitten. Similar findings were obtained for hand actions (for example, grasping a pen) and foot actio...

Effective HIV control may depend on viral protein targeted by immune cells

... researchers. A new study finds that HIV-infected individuals in whom virus-specific CD8 T cells are targeted ag...d with significantly reduced viral levels and that individuals with responses against several different Gag fragments had even lower viral loads. In contrast, tho...

Dragonfly's metabolic disease provides clues about human obesity

...uld induce this activation in muscles from healthy individuals by exposing them to excretory-secretory products obtained from the gregarine parasites," said Schilder. The researchers also found that the muscles of parasite-infected dragonflies oxidized only carbohydrates instead of a carbohydrate-lipid mix. ...

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