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Curvature in Biological News

Study links low-frequency hearing to shape of the cochlea

... establishes a direct link between the cochleas curvature and the low-frequency hearing limit of more than ... hearing evolved. It turns out that it is the curvature of the cochlea, not its size, that is highly ... and a busy street. The idea that the cochleas curvature has a significant effect on hearing has been ...

Carnegie Mellon develops computer model to study cell membrane dynamics

... membrane structures, each disk bent the membrane slightly. This local curvature spread around a disk like a little halo. When two disks approached one ... proteins can indeed aggregate and facilitate vesiculation based on their curvature imprint alone. Our simulations show that proteins need not interact ...

Researchers discover how stealthy HIV protein gets into cells

... Wong said. Something about the TAT protein had induced a saddle splay curvature in the membrane. This shape resembles a saddle (like that of a Pringles ... to buckle in two different directions, bringing on the saddle splay curvature that allowed the pores to form. When another positively charged amino ...

Study examines genetic defects linked to body abnormalities in patients with childhood cancer

... prevalence of body abnormalities, such as asymmetric lower limbs and curvature of the spine, suggesting that the genetic defect responsible for the ... (such as differing length in limbs; broad hands or feet; prominent ears; curvature of the spine). The patient group consisted of 898 long-term survivors of ...

Hind wings help butterflies make swift turns to evade predators, study finds

... flight trajectories; then they analyzed and plotted on a computer the insects' flight velocity, acceleration, how fast they changed direction, the curvature of their path and more. They found that clipping the back wings did not affect basic flight, but "we were able to show that removing the hind wings ...

New filtering technology has environmental, industrial applications

... of the material like a layer of cream," Youngblood said. When a fluid lands on the surface of the material, it forms beads having a distinctive curvature determined by the "contact angle" of the substance. The higher the contact angle, the more a material is likely to form beads. Lowering the contact ...

Biochemists reveal details of mysterious bacterial microcompartments

... structures. "This principle of closing a structure by combining a large number of hexagons with a small number of pentagons to create a piece of curvature has been understood by architects, molecular biologists studying viruses and soccer ball manufacturers." That principle is also understood by ...

Reconstructing the biology of extinct species: A new approach

... a highly significant statistical relationship between the radius of curvature of the semicircular canals and the species' habitual way of moving. More ... species consistently have semicircular canals with a larger radius of curvature than do slower-moving ones. For example, a small, fast-moving leaper like ...

Scientists characterize proteome of human cornea

... or astigmatism. These vision disorders are often the result of incorrect curvature or irregular shape of the cornea and are the most common vision disorders ... arise from cornea swelling (Fuchs' dystrophy) or thinning and change of curvature of the cornea (keratoconus)." In order to learn more about the cornea ...

New designer lipid-like peptide with lipid nanostructures for drug delivery systems

... Academy of Sciences and of Centre for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, USA report the study of “Tuning curvature and Stability of Monoolein Bilayers by Designer Lipid-Like Peptide Surfactants” in the May 30th issue of the online, open-access journal PLoS ONE. ...

Matrilin-3 gene discovered to prevent onset of osteoarthritis

... as multiple epiphyseal dysplasia (MED), a disorder that begins in childhood and can include malformation of the hands, feet and knees and abnormal curvature of the spine. In this study, researchers knocked out matrilin-1 and -3 in mice in order to study their link to osteoarthritis. When matrilin-1 ...

Gene loss accelerates aging

... of premature aging observed in these p63 deficient mice (image available on request) were hair loss, reduced fitness and body weight, progressive curvature of the spine, and a shortened lifespan. "Aging and cancer are two sides of the same coin. In one case, cells stop dividing and in the other, they ...

Potential treatments for neurofibromatosis

... over a lifetime. Some NF 1 patients also develop numerous light brown (café-au-lait) spots on the skin, enlargement and deformation of bones and curvature of the spine (scoliosis), and in many instances, learning disorders. Occasionally, tumors may develop in the brain, on cranial nerves, or on the ...

U-M scientist to talk about tissue engineering at AAAS

... therapy approach works, Krebsbach said the next step would be working with engineers to develop anatomically correct scaffolding with the same curvature and contours of natural bones. That would help a patient develop new bone almost indistinguishable from nature's original equipment. Many ...
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(Date:9/30/2014)... reefs face a suite of perilous threats in ... development and climate change, fragile coral ecosystems are ... this trend, some species of corals surrounding the ... natural protector in their tropical environment: coral guard-crabs. ... History,s Smithsonian Marine Station scientist Seabird McKeon and ...
(Date:9/29/2014)... A species of gut bacteria called Clostridium ramosum , ... weight. The work is published this week in mBio ... Microbiology. , A research team from the German Institute ... human gut bacteria including C. ramosum gained weight ... C. ramosum were less obese even when consuming ...
(Date:9/29/2014)... September 29: Between 1970 and 2010 populations of ... globe dropped 52 percent, says the 2014 Living ... (WWF). This biodiversity loss occurs disproportionately in low-income ... high-income countries. , In addition to the precipitous ... to other warning signs about the overall health ...
Breaking Biology News(10 mins):Smithsonian scientists discover coral's best defender against an army of sea stars 2Gut bacteria promote obesity in mice 2Half of global wildlife lost, says new WWF report 2
(Date:9/30/2014)... 30, 2014 A group of Americans is ... an epidemic that, left unchecked, could create a catastrophic, global ... headed to Africa. John Rogers, the Executive Director the Eugene ... to fight a disease most think mankind conquered long ago: ... years ago is on the comeback in several countries - ...
(Date:9/30/2014)... 2014 Two revolutionary procedures now being utilized ... gum disease a far less painful and far more ... you’ve ever felt electric shock waves surge through your teeth ... beverage, it’s possible you already know the impact of receding ... general dentist in West Palm Beach, and a Fellow in ...
(Date:9/30/2014)... (HealthDay News) -- Medicare should cover low-dose computed tomography ... the disease, a coalition of more than 60 patient ... the Lung Cancer Alliance, the Society of Thoracic Surgeons, ... and the American Society of Clinical Oncology, made its ... Centers for Medicare & Medicaid Services (CMS). Such ...
(Date:9/30/2014)... Defense has made progress in reducing the stigma associated ... and post-traumatic stress disorder, but more improvement is still ... Despite efforts of both the Defense Department and the ... service members still do not seek needed care for ... concerted effort to promote treatment as a way to ...
(Date:9/30/2014)... that causes a rare premature aging disease could lead ... unstoppable cell division that makes cancer so deadly. ... U-M Health System recently discovered a protein mutation that ... hematopoietic stem cells can,t regenerate and make new blood. ... cancer and bone marrow failure. , But the ...
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