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Tag: "loss" at biology news

Retinal scans eyed for New Mexico show cattle

...rs were concerned about expense, inconvenience and loss of privacy. But experts stress the importance of controlling cattle diseases before they get out of hand, said Clay Mathis, a livestock specialist with NMSU's Cooperative Extension Service. Even though the new system will cost producers more money,...

Building a better mouse model of lung cancer: FHIT counts

...roduce a specific protein (called Fhit). This same loss has been linked to head and neck, esophageal, colo... breast and cervical cancers as well. Because the loss of FHIT occurs so early in lung cancer, mice that are missing that gene may be a good model in which...

Restoring silenced suppressor gene kills lung-cancer cells

... DNA damage before the cells become cancerous. The loss or silencing of tumor suppressor genes is a fundamental cause of tumor development. The WWOX protein is missing in cells making up many lung tumors, and in 62 percent of cases, the gene is turned off by a chemical process known as methylation. "T...

A little telomerase isn't enough

... normal levels of telomerase still exhibited early loss of stem cells, the researchers report in the Dec. 16 issue of Cell. "These offspring have what we have called 'occult' genetic disease -- their genetic make-up is perfectly normal, but they still have the physical problems of their parents," says C...

Gene controls whether fear is a factor

...hey are needed," Shumyatsky said. "It appears that loss of stathmin might interfere with this ability in the amygdala, leading to the overproduction of microtubules in certain areas. In essence, the cells lose their flexibility." Indeed, the researchers found impairments in the ability of key inputs in t...

Novel protein complex enables survival in hostile environment

... organism after all, and, in the course of time, a loss of the sulfite reductase gene gave rise to a sulfite-sensitive methanogen. Similarly the loss of certain key genes gave rise to the archaea that reduces sulfate, but do not make methane. "But it...

New understanding of regeneration gained by Forsyth scientists

...ew back two heads rather than a head and tail. The loss of GJC function had a direct impact on the regeneration process; without this communication the planaria cells at the posterior end became re-specified and formed a normal head, complete with brain, eyes, etc.. This is an example of a high-level "mas...

Genetic analysis of cavefish reveals more about evolution

...h population and found that both deletions cause a loss of Oca2's functionality, demonstrating that the albinism in the two groups evolved independently. The findings are reported in the latest issue of the journal Nature Genetics. The study also included researchers from the Harvard Medical School, the ...

Womb needed for proper brain development

...ment full of sights, sounds, touches and unnatural loss of movement. "This research suggests that stimulation of the brain while it is still under construction may not be beneficial," said Dr. Witelson. "The prefrontal regions appear particularly vulnerable. Is it because they are the most premature at b...

Evolutionary conservation of a mechanism of longevity from worms to mammals

...thors found that a subset of hepatocytes exhibited loss of heterozygosity (effectively becoming mclk1-/- c...uggesting that resistance to oxidative stress upon loss of mclk1 provides a growth advantage. Though the aging process of different organisms will most l...

Do the Europeans turn ill sitting up so late?

...the physiological and behavioural effects of sleep loss and its social consequences. Sleep loss can be a consequence of sleep disorders, shift work, socio-economic constraints or voluntary restric...

Novel enzyme offers new look at gene regulation

...eins that contain a JmjC domain. For example, hair loss occurs in individuals with mutations in the JmjC domain of a protein called "hairless," possibly due to defects in the appropriate removal of histone methyl groups. "Given the large numbers of JmjC domain-containing proteins that exist in diverse or...

Genetic analysis of Asian elephants in India reveals some surprises

... last several hundred years, mainly due to habitat loss and fragmentation, capture and domestication, and, more recently, poaching of males for ivory. To combat these declines, India established 11 so-called "elephant ranges" that incorporate more than half of the known elephant habitat. Fewer than half...

Discovering the first steps in transcription-coupled repair

...e sensitivity to sunlight. However, in XP there is loss of ability to repair damage to DNA caused by ultra...so that repairs to the DNA can proceed without the loss of the messenger RNA that has already been formed. The researchers created artificial transcription...

Image of myosin-actin interaction revealed in cover story of Molecular Cell

...osin-actin binding region and to correlate it with loss or gain of function. The precise characterization of this myosin-actin interface is critical, evident by the way a single amino acid change in myosin leads to familial hypertrophic cardiomyopathy (FHC), an undetectable condition resulting in death b...

Sahara's edge studied from ground, air and space to improve water management

...exploitation risks exhaustion of groundwater, plus loss of artesian pressure to put remaining supplies out of reach or induce contamination from nearby saline water deposits. Working with partners including African water agencies, ESA has commenced a project called Aquifer to develop satellite-derived p...

Harnessing genomic research

...n and the body are injured and fail to regrow. The loss of this communication leads to paralysis and loss of sensation. Scientists at King's College London and Oxford BioMedica are investigating a receptor ...

Overfishing may drive endangered seabird to rely upon lower quality food

... bird, the primary conservation concerns have been loss of habitat, particularly the coastal old-growth forests where the bird nests," he said. "But it's possible that they're getting a double whammy. Not only are they losing their nesting habitat, they're also experiencing a degraded prey environment." ...

The brain is broadly wired for reproduction

...pheromones. The redundancy might guard against the loss of a pheromone receptor from either the VNO or the olfactory epithelium causing a devastating loss of pheromone detection." The studies showed that the odor of clean bedding also activated some neur...

UCLA discovery will aid in treatment of patients with a deadly brain cancer

...ancer-causing protein and either the expression or loss of the PTEN protein," Mischel said. "The interactions of the two may be important in determining response to targeted agents." ...

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