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Tag: "change" at biology news

Natural Killers Could Lead to New Hepatitis Treatments

...showed reduced survival of their NKT cells, but no change in the speed or pattern of their patrolling. The studies showed that the presence of CXCR6 prolonged the NKT cells' survival. The researchers also found that the NKT cells of CXCR6-deficient mice showed a reduced patrolling, as well as a decreased se...

Some Brain Cells Change Channels

...nto the living room, these brain cells are able to change what they allow in by swapping one kind of channel...hannels move is still unknown, as is why the cells change their channels. Part of the answer is likely to be self-preservation: Too much calcium inside nerve...

Newly discovered protein an important tool for sleeping sickness research

...the gene silencing that enables the trypanosome to change its antigen coating, the discovery of JBP2 may one day enable scientists to create a drug that prevents the manufacture of base J, affecting the trypanosome's ability to vary its antigenic coating, and therefore allowing the human immune system to ki...

Disabling gene defuses rheumatoid arthritis in mice

...o3a had been disabled and studied the effects this change had on T cells. As a follow-up, Peng decided to inject the new line of mice with antibodies that normally induce a condition like rheumatoid arthritis. But the mice remained healthy even after the injections. "It was a surprise finding," Peng says....

Breakthrough System for Understanding Ocean Plant Life Announced

...the gene silencing that enables the trypanosome to change its antigen coating, the discovery of JBP2 may one day enable scientists to create a drug that prevents the manufacture of base J, affecting the trypanosome's ability to vary its antigenic coating, and therefore allowing the human immune system to ki...

Researchers pioneer new gene therapy technique using natural repair process

...vels of the IL-2R protein also were restored. The change to the cells seems permanent, Dr. Porteus said, an...hemoglobin. The mutation causes the blood cells to change shape, preventing them from flowing through the blood vessels efficiently. One out of every 12 Afric...

Researchers Closer To Helping Hearing-Impaired Using Stem Cells

...s with chemicals known to encourage stems cells to change into primitive neurons. The bone marrow cells took the shape and other characteristics of neurons. Next, they exposed the cells to two molecules that are secreted from nearby tissues of the ear during embryonic development. The two molecules -- known...

Researchers Identify Cause of Early Bird Sleep Disorder

... Yet in genetically engineered mice, the same gene change made the mice early risers -- mimicking what was s...ase-pair in the gene's long DNA chain is enough to change a person's sleep behavior. Evidence from tissue culture experiments with the second gene suggests th...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...rowing importance for measuring impacts of climate change and, should polar caps continue receding, hypothetical new disturbances on the northern ocean such as energy exploitation, fishing and shipping. The research compares species distribution in the shelf, slope and deep sea regions (the deep sea is gen...

Tamoxifen-like drug suggests new ways to selectively block estrogen

...ability of an experimental drug known as GW5638 to change the shape of the estrogen receptor is helping rese...ract with it. "We found a small, but significant, change in conformation that goes a long way towards explaining why these drugs have different effects in di...

Chronic Sinus Infection Thought To Be Tissue Issue, Mayo Clinic Scientists Show It's Snot

...irway diseases." The findings could significantly change the way chronic sinus infection is treated, accord...sease. Also, some surgeons have already started to change the way they do surgery for patients with chronic sinus infections, focusing now on removing the muc...

Understanding how bacteria communicate may help scientists prevent disease

...el, the bacteria know they have a quorum because a change is initiated in the receptor protein, which then c...k in each bacterium that results in the ability to change behavior. Just before he came to Virginia Tech in August 2004, Kulkarni and his collaborators at Pri...

Hopkins AIDS experts issue warning about global efforts to provide drug therapies

...r treatment, prompting the committee to attempt to change its criteria toward a psychological assessment. With liver transplants, patient selection was plagued by different interpretations of who medically benefited most from a transplant and by a scoring system that favored patients most likely to survive...

Researchers reveal secrets of flying snakes

...tory. Socha found that the snake uses its ribs to change its body shape; it flattens from head to vent. The snake takes control of its flight by undulating through the air in a distinctive S-shape as if swimming ?moving the tail up and down and side-to-side. While gliding, these snakes make turns up to 90 ...

Study of energy and health in Africa focuses spotlight on charcoal and forest management

...ave millions of lives and have significant climate change and development benefits. The African continent, as well as many developing nations in Asia and Latin America, is dependent on both wood and charcoal for cooking and heating homes. In 2000, nearly 470 million tons of wood were consumed in homes in s...

Scientists discover global pattern of big fish diversity in open oceans

...f our planet. Teasing apart the effects of climate change and fishing over the past 50 years, the authors sh...kerel and pelagic stingrays. This is a fundamental change in the world's oceans." To understand what creates these patterns of diversity, the scientists coll...

Ocean climate predicts elk population in Canadian Rockies

...alues. "It's important to figure out what climate change means to us in terms we can understand," he said. "The more we know, the more we can do to produce the outcomes we desire and prevent the ones we don't." In 2002, Hebblewhite won the Canon National Parks Scholarship for the Americas, an award worth ...

The making and breaking of microtubules

...crotubule has 13 protofilaments, which points to a change in the number of protofilaments after GTP hydrolysis, by a mechanism not yet understood. The new high-resolution models of tubulin transitional states will be used to understand how microtubules explore their cellular environment to find their goals...

Newest HIV drugs should be used with FUZEON(R)

...with these new drugs and I believe these data must change the way we manage triple class experienced patients facing HIV resistance and failing to reach undetectable viral load." Studies presented this week show that when FUZEON was given in combination with the novel HIV medication, tipranavir, an impress...

Proteomics brings researchers closer to understanding microbes that produce acid mine drainage

...will allow us to begin to understand how organisms change their behavior in response to the presence of other organisms and when their physical and chemical environments are perturbed." Coauthors with Banfield, Hettich and Thelen are post-doctoral fellow Rachna J. Ram, graduate student Gene W. Tyson and re...

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