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Motile Cilia go with the flow
04-22-2007 · EurekAlert!Cilia, tiny hair-like structures that propel mucus out of airways, have to agree on the direction of the fluid flow to get things moving. Researchers at the Salk Institute for Biological Studies discovered a novel two-step mechanism that ensures that all cilia beat in unison.
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Keywords: motile, cilia, flow
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- In early embryos, cilia get the message across
10-19-2006 · EurekAlert!
How a perfectly symmetrical embryo settles on what's right and what's left has fascinated developmental biologists for a long time. The turning point came when the rotational beating of cilia, hair-like structures found on most cells, was identified as essential to the process. Now, scientists at the Salk Institute for Biological Studies take a step back and illuminate the molecular process that regulates formation of cilia in early fish embryos.
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- Fast test for low blood flow in dogs detects early heart trouble
11-12-2006 · EurekAlert!
Working with dogs and using the latest in imaging software and machinery, also known as a 64-slice CT scanner, Johns Hopkins heart specialists have developed a fast and accurate means of tracking blood that has been slowed down by narrowing of the coronary arteries. Researchers say it took them less than half the time of exercise stress tests and echocardiograms currently used to find early warning of vessels more likely to become blocked and cause heart attack.
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- How blood flow dictates gene expression
12-20-2006 · EurekAlert!
Researchers at the University of Pennsylvania School of Medicine have pinpointed a key regulatory protein that translates blood flow into gene expression. The investigators showed that in a model of mouse embryonic development a transcription factor called Klf2, which resides in cells that line blood vessels, is activated by rapid, pulsed blood flow. Understanding Klf2's role in blood vessel and muscle biology could help with fighting atherosclerosis.
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- Lakes beneath Antarctic ice sheets found to initiate and sustain flow of ice to ocean
02-21-2007 · EurekAlert!
Geophysicists Robin Bell and Michael Studinger from the Lamont-Doherty Earth Observatory, a part of the Earth Institute at Columbia University, led a team that discovered four large, subglaical lakes that for the first time the link these water bodies locked beneath miles of ice, to fast flowing ice streams in Antarctica. Together with colleagues from NASA, the University of New Hampshire and the University of Washington, the scientists found that, in four separate cases, lakes appear to contribute to the formation of ice streams.
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- Researchers find that childhood sarcoma increases risk of blood clots
04-18-2007 · EurekAlert!
Researchers at NCI have determined that children and young adults with a form of cancer called sarcoma are at increased risk of having a thromboembolic event in their veins. Thromboembolic events can be a blood clot in a vessel that can interfere with normal blood flow. Investigating the association between sarcoma and TE is important because the majority of children with sarcoma can be cured of their cancer, but the occurrence of TEs could adversely compromise this success.
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- Rapid evolution of defense genes in plants may produce hybrid incompatibility
07-08-2007 · EurekAlert!
Species are kept separate in plants and animals through barriers to gene flow. However, the exact mechanisms of speciation have only been explained within the last 20 years. Dr. Detlef Weigel and colleagues found that one mechanism, hybrid necrosis, is associated with a plant defense gene. Different forms of these rapidly evolving genes in parent plants can cause autoimmune responses leading to offspring inviability and may represent a molecular pathway to speciation unique to plants
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- Device helps patients survive, regain function til transplant
08-29-2007 · EurekAlert!
A new generation of implanted heart-assisting pump does very well at helping severely ill heart-failure patients survive, and thrive, until they receive a heart transplant, a new study shows. The device also helped patients' original hearts regain function and allowed their other organs to heal by restoring blood flow.
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- Public lecture on the science of blood flow
10-16-2007 · University of Bath
Local people will be able to learn about the science of how blood flows around the body at a public lecture at the University of Bath next week (7pm, Friday 26 October 2007).
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- A vitamin B12 derivative could potentially be used to treat hypertension and heart disease
11-23-2007 · EurekAlert!
Nitric oxide is a very important regulator of blood pressure and blood flow to the heart and other organs. Several drugs such as nitroglycerin and sodium nitroprusside act by providing NO, but each of these drugs have drawbacks. Investigators at the University of California, San Diego have developed a drug that releases NO directly, which is unlikely to be toxic because it is a vitamin B12 derivative.
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- Concrete flow researchers to use Argonne supercomputer
01-23-2008 · EurekAlert!
Argonne National Laboratory has announced that a team of researchers at NIST has been awarded 750,000 central processing unit hours on the IBM Blue Gene/P supercomputer at the Argonne Leadership Computing Facility. The allocation is one of 55 awards of supercomputer time given in a peer-reviewed competition known as the Innovative and Novel Computational Impact on Theory and Experiment program.
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