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Tag: "such" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...bited any of seven common forms of sleep problems, such as having nightmares, refusing to go to bed or having trouble falling asleep. Surprisingly, babies born to mothers classified as anxious or depressed while pregnant dozed just as long as their unstressed-pregnancy counterparts about 12 hours. ...

St. Jude study solves mystery of mammalian ears

...lain why dogs, cats, humans and other mammals have such sensitive hearing and the ability to discriminate among frequencies. The work also highlights the importance of basic hearing research in studies into the causes of deafness. A report on this work appears in the advanced online issue of “Proceedings ...

Scratch no more: Gene for itch sensation discovered

... like eczema, or it can stem from a deeper problem such as kidney failure or liver disease. It can be a serious side effect of cancer therapies or powerful painkillers like morphine. For some people, chronic itching can be very disruptive, interfering with sleep or giving rise to scratching that leads to ...

One species, many genomes

...netic differences far exceeds the expectations for such a streamlined genome, as the scientists write in t...not fulfill its normal function anymore! Results such as these raise fundamental questions. For one, they qualify the value of the model genomes sequenced...

Nicotine rush hinges on sugar in neurons

...eveal an important role for the sugar molecules in such proteins. “Our studies fill a major gap in the f...ome researchers had suggested that when a chemical such as nicotine binds to an ion channel protein on the cell surface, the protein starts a “conformationa...

Common cancer gene sends death order to tiny killer

...nery that produces other types of RNA in the cell, such as the messenger RNAs that carry the instructions to make proteins. Once produced, microRNAs stick to messenger RNAs and, like crumpled paper jammed in a copy machine, prevent proteins from being made. Josh Mendell, M.D., Ph.D., an assistant prof...

Research identifies protein that signals flowering in squash plants

...e are plants that flower as the days grow shorter, such as in the fall in temperate regions. Long day (LD)...c expression of FT by the ZYMV vector. Analysis of such induced plants showed that the infection zone of ZYMV was not coincident with the plant’s floral mer...

Cellular message movement captured on video

... transmit information from one region of the cell, such as the periphery, to another region of the cell, such as the nucleus,” said Chien. “The whole situation is much more complex than we have been able to sho...

Researchers discover inherited mutation for leukemia

... many cancer geneticists have come to believe that such subtle changes are common causes of cancer, and this is one of the first, strong examples of that principle." The study succeeded because it combined the field of gene mutation research and the new field of epigenetics, which identifies genes sil...

Agent slows aging in mice

...Drug Administration doesn’t evaluate the safety of such herbal remedies....

Enzyme delivered in smaller package protects cells from radiation damage

...m cells. However, there is increasing concern that such high doses of radiation may have long-term negative effects on healthy tissues and organs, such as the kidney, liver and thyroid gland. Based on previous studies showing that intravenous gene ...

Innovative smallpox vaccine research study to be conducted at Case Medical Center

... cannot be used in immune-compromised individuals, such as patients with HIV or individuals with certain skin conditions such as eczema,” says Robert A. Salata, M.D., chief of the Division of Infectious Diseases at Case Wester...

Cells re-energize to come back from the brink of death

...ch a cell “chews up” debris and broken components, such as damaged mitochondria. After disposing of damaged mitochondria the cell can replace these vital components. “We found that in the absence of caspase activation, cells that avoided CICD took about a week or so to begin multiplying again,” Green ...

Brain inflammation may be friend, not foe, for Alzheimer's patients

...d that taking medications to squelch inflammation, such non-steroidal anti-inflammatory drugs or NSAIDs, m...en fraught with difficulty, producing side effects such as encephalitis or severe brain inflammation in people with Alzheimer’s. “The potential to treat ...

Blood test may help signal tumor's remission, return in throat cancer patients

...s still time to pursue a second line of treatment, such as surgery or drug therapy. “Cancers of the head and neck are insidious because surgical removal of the tumor can severely impair a person’s ability to talk and to swallow,” said NIDCD Director, James F. Battey, Jr., M.D., Ph.D. “A blood test that e...

Math that powers spam filters used to understand how brain learns to move our muscles

... belief affect the probability of future outcomes, such as taking an alternate route to work on Friday bec...ly track rapid flashes of light. Experiments using such rapid eye movements, or saccades, are a staple in studying how the brain controls movement. Initi...

Researchers find 24 species believed new to science in Suriname rainforest

...demonstrate the value of exploring unknown regions such as Suriname’s rainforest to assess the need to con...467 species at the two sites, including large cats such as panther and puma, various monkeys, and a range of reptiles, amphibians, bats, birds, fish and ins...

Old memory traces in brain may trigger chronic pain

...ng eluded scientists. Traditional analgesic drugs, such as aspirin and morphine derivatives, haven’t worked very well. A Northwestern University researcher has found a key source of chronic pain appears to be an old memory trace that essentially gets stuck in the prefrontal cortex, the site of emotion...

Researchers track how spores break out of dormant state

...been associated with neural degenerative diseases, such as Alzheimer’s and prion diseases. “The extreme physical and chemical resistance of Bacillus spores suggests that evolutionary forces have captured the mechanical rigidity and resistance of these amyloid self-assembling biomaterials to structure the ...

Modeling the restless brain

...udying the brain to studying other complex systems such as cellular metabolism, the economy or global clim...ystem works as a whole. And while technologies such as functional MRI allow scientists to measure some kinds of neural connectivity, neuroinformatics ap...

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