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Tag: "human" at biology news

Scientists identify prion's infectious secret

...enerative diseases, such as mad cow disease or its human equivalent, Cruetzfeldt-Jakob disease, result from a kind of infectious protein called a prion. Remarkably, in recent years researchers also have discovered non-pathogenic prions that play beneficial roles in biology, and prions even may act as essen...

DNA repair proteins monitored at double-strand break

...Research Hospital had a molecule’s eye view of the human cell’s DNA repair kit as it assembled on a double-... themselves on and around a double-strand break in human cells," said Michael Kastan, M.D., Ph.D., St. Jude Cancer Center director. "Our approach solved that...

Survival of the rarest: Fruit flies shed light on the evolution of behavior

...he researchers are examining how variations in the human foraging gene may be linked to food-related disorders. ...

UCLA AIDS Institute researchers find a peptide that encourages HIV infection

...ses the ability of HIV-1 to enter a broad range of human cells, retroviral vectors are currently being explored as vehicles for gene therapy," the authors wrote. "In this area, at least, agents that enhance retroviral uptake could contribute to an emerging field of medicine." "So many people have tried...

Toxoplasmosis infection trick revealed by scientists

... parasite just before it invades host cells in the human body. They found that the protein known as TgMIC1 ...sting the parasite to stick to, and then enter the human cell. Using a novel carbohydrate microarray the team were able to identify the precise sugars to...

Researchers publish first marsupial genome sequence

...he team found that most innovations leading to the human genome sequence lie not in protein-coding genes, b...trate how important it is to understand all of the human genome, not just the fraction that contains genes that code for proteins. We must identify all funct...

Study shows continued success for new HPV vaccine against virus responsible for cervical cancer

...100 percent effective against the two types of the human papillomavirus (HPV) responsible for most cases of cervical cancer. Results of a nationwide study of the vaccine will be published in the May 9 issue of the New England Journal of Medicine. Cervical cancer is the second most common cause of cancer d...

Dealing deadly cancers a knockout punch

...nst cultured tumor cells, in animal models, and in human clinical trials. Oncolytics' proprietary reovirus ...ory authorities to test Reolysin in three separate human trials in combination with the cancer drugs gemcitabine, paclitaxel/carboplatin and docetaxel. P...

HIV survival improves if patients stay in care

...en highly active therapy directed against HIV (the human immunodeficiency virus that causes AIDS) is keeping people alive, understanding the value of regular medical care is crucial," said Dr. Thomas Giordano, assistant professor of medicine ?infectious diseases at BCM and lead author of the report. "W...

Hepatitis E takes a piggyback

... pigs get HEV early enough to minimise the risk of human infection. The scenario humans need to worry about would occur if the infection rate in pigs drops. At low infection rates, there is actually a higher chance pigs will pass on HEV to humans at slaughter. Kunio Satou and Hiroshi Nishiura analysed blo...

Slowing the racing heart

...art, triggering its neighbor cells to beat. In the human heart, one cell -- the pacemaker cell -- beats faster or slower to induce a rhythmic heartbeat that varies to increase or decrease the blood flow to the body as we eat, sleep or exercise. "Disturbances of pacemaker control are common in heart dis...

Confirmed -- deforestation plays critical climate change role

... for nearly 20 per cent of carbon emissions due to human activities," Dr Canadell says. "This will release an estimated 87 to 130 billion tonnes of carbon by 2100, which is greater than the amount of carbon that would be released by 13 years of global fossil fuel combustion. So maintaining forests as carbo...

Researchers attach genes to minichromosomes in maize

...proteins and metabolites that can be used to treat human illnesses. In a paper published in the Proceeding...endosperm) can be used to grow animal proteins and human antibodies that treat diseases and disease symptoms. Minichromosomes could enable new and better pro...

DNA-damage test could aid drug development

...one marrow of a single mouse, and potentially from human bone marrow. Joe Shuga, the graduate student i...icity in humans, not animals, and you could obtain human bone marrow that's left over from medical procedures." "If you could change the micronucleus assa...

100 percent of pregnant women have at least one kind of pesticide in their placenta

...present in food, air, soil and water. Nonetheless, human beings are also victims of these emissions, and involuntarily (what is known in this scientific field as "inadvertent exposure"), every day humans ingest many of these substances which cannot be assimilated by our body, and are accumulated in the fat...

Palau's coral reefs show differential habitat recovery following the 1998 bleaching event

...cause Micronesia is at a great distance from large human population centers, van Woesik hypothesizes that the coral recovery rate is directly linked to human environmental factors ?a promising sign for recovery in other regions. "Factors such ...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...chine sound and counteracts them. When tested with human listeners, the system reduced noise levels and imp...SCIENCE Drawing from knowledge of acoustics and human anatomy, researchers in session 2pMUa will discuss the latest ideas for teaching voice students to i...

Chemical maps hint at drug's effects on schizophrenia

...me lipids are known to have detrimental effects on human health -- such as high levels of cholesterol that ...ease -- many lipids have positive effects on basic human functions, including communication among all the cells of the body. Scientists are still trying to s...

Spreading viruses as we breathe

...ng. "Understanding the way viruses spread from human expiration means we can look to better design spaces, ventilation systems and filters," she said. Professor Morawska said the next stage of the research would investigate the global effect of dried droplets in health care facilities to see how vir...

From the deep -- Researchers find new species of sea anemone

... and roughly cube-shaped. It's about the size of a human molar, and even looks like a tooth with small tent...itself and, more broadly, may provide clues on how human activities affect this unique, seemingly removed ecosystem. "The thing about these communities is...

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