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Tag: "inner" at biology news

St. Jude study solves mystery of mammalian ears

...cientific debate over how specialized cells in the inner ear amplify sound in mammals appears to have been ...und waves. Located in the fluid-filled part of the inner ear called the cochlea, these outer hair cells sport tufts of hair-like cilia that project into the ...

Cellular message movement captured on video

...btained cells for their most recent study from the inner membranous lining of a cow aorta. They added genetically engineered proteins tagged with red and green fluorescence markers to the bovine aortic endothelial cells, grew them in tissue culture, and filmed them while they passed fluid across the cells’...

Simulations unravel outer membrane transport mechanism

...nsport system that depends on an energy-generating inner membrane protein, TonB. This TonB-dependent transp...searchers simulated the interaction of part of the inner membrane protein TonB (shown in red) and the luminal domain (in green and dark blue) of the outer me...

'Lucky 13' as new gene discovery offers further hope for childhood blindness

...rcilin may be involved in moving proteins from the inner to outer segments of photoreceptors in the retina. Protein transport is essential within retinal photoreceptor cells as they are long, thin cells with a highly evolved structure on one end (the outer segment) which detects light and sends signals to ...

Gene responsible for common hearing loss identified for first time

...ddle ear interrupts the sound waves passing to the inner ear. While the causative factors remain unknown, now one of the genetic components has been identified, Ms Thys told the conference. “The gene in which the variant is located points to a pathway that contributes to the disease. This may be a lead for...

Reconstructing the biology of extinct species: A new approach

...n of balance, the three semicircular canals of the inner ear on each side of the skull. The team's article on its research will be published on 26 June in the print edition of the Proceedings of the National Academy of Sciences and in the journal's online early edition during the week of 18 to 22 June. ...

Helping chlorine-eating bacteria clean up toxic waste

...emical processes, to create computer models of the inner workings of the bacterium. The project is funded by a three-year, $381,000 grant from the Department of Defense, which has some 6,000 toxic-dump sites of its own to clean up. Richardson explained that in the field "the bacteria sometimes start and...

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

...are similar to milk and some paints, with confined inner nanostructures, will offer unique characteristics like high drug load capacities and low viscosity. Here these designer lipid-like peptides may play a key role in improving effective drug delivery systems....

NASA-funded robotic sub finds bottom of world's deepest sinkhole

...elow the surface and generating a sonar map of its inner dimensions. The vehicle employed autonomous navigation and mapping systems developed by Carnegie Mellon University’s Robotics Institute. During a two-week NASA-funded exploration led by Bill Stone of Stone Aerospace, the Deep Phreatic Thermal Explor...

Hearts of male and female rainbow trout are different

...ermost (epicardial) layer of the ventricle vs. the inner endocardium layer. The trout heart is a composite organ and layer distinction is important because the epicardium, much like the human heart, receives oxygenated blood via the coronary circulation. Conversely, the endocardium is supplied by only deox...

How to steer a moving cell

...s. Cells possess an innate ability to migrate, an inner compass that somehow senses the presence of chemokines. But in metastasis, the cell’s inner compass goes awry ?allowing cells to leave the primary tumor, crawl through tissues and enter blood ...

Students invent protective pouch to enhance cell therapy

...ior of the vein. Next, the doctor would insert the inner stent, surrounded by the porous nylon mesh. The inner stent is made of nitinol, a metal that snaps back into its original shape after being compressed for...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...and's Robert Dooling ( dooling@psyc.umd.edu ), the inner ears of archosaurs (birds, crocodilians, and extin...species and the size of a sensory structure in the inner ear known as the basilar papilla. Small, lightweight species with a short basilar membrane can hear...

Noise echoes in cell communications

...creasing the amount of noise in the cochlea of the inner ear, perhaps by an implanted device. Hong, Saidel and Martin applied this principle of noise to another process called "quorum sensing" ?how bacteria signal one another to act collectively when causing an infection. The Rutgers-Camden research te...

Scientists identify molecular cause for one form of deafness

...in flat-panel displays. Within the cochlea of the inner ear, sound waves cause the basilar membrane to vibrate. These vibrations stimulate hair cells, which then trigger nerve impulses that are transmitted to the brain. Researchers have now learned that mutations in a protein called espin can cause flop...

Study shows isolation of stem cells may lead to a treatment for hearing loss

... have isolated “cochlear stem cells?located in the inner ear and already primed for development into ear-re...ad to the activation of cochlear stem cells in the inner ear to regenerate new hair cells. “Clearly we have miles to go before we reach our end goal, but th...

Researchers learn what sparks plant growth

...unication during growth, from the epidermis to the inner layers. Such a mode of communication is important ... cells in the epidermis "talk" to the cells in the inner layers, communicating that they too should expand." Savaldi-Goldstein made the discovery that the...

Cancer-killing invention also harvests stem cells

... adhesion of blood cells to the vascular wall, the inner lining of the blood vessels. During inflammation, the vascular wall presents surface selectins that adhere specifically to white blood cells. These selectins cause the white blood cells to roll slowly along the vascular wall, seeking signals that t...

Liver regeneration may be simpler than previously thought

...logical Chemistry, provides new information on the inner workings of cells from regenerating livers that could significantly affect the way physicians make livers regrow in patients with liver diseases such as cirrhosis, hepatitis, or cancer. "The human liver is one of the few organs in the body that can...

Scientists discover stage at which an embryonic cell is fated to become a stem cell

...owards the inside of the embryo. These become the inner cell mass of stem cells. Previously, it was belie...n embryonic cells were to develop the qualities of inner embryonic cells, a population that have stem-cell-like properties. Thus, their results show that man...

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