Tag: "inner" at biology news

Tips from the Journals of the American Society for Microbiology: January 2002

...nterestingly, the researchers foundbacteria in the inner tissues of the plants. "We have demonstrated that lettuce grown in soil containing contaminatedmanure or irrigated with contaminated water results in contamination ofthe edible portion of the lettuce plant," say the researchers. "Moreover,the result...

The anti-inflammatory effect of apoptotic bodies

...s a phospholipid that is usually restricted to the inner leaflet of the plasma membrane but that accumulates on the cell surface during apoptosis. Exogenous apoptotic cells introduced into inflamed lung tissue in vivo are taken up by local macrophages, which then release active TGF-b1 and suppress the effe...

Geophysicist studies life in the early solar system

...st, at least on Mars and Europa - one of Jupiter`s inner moons - where microbes that live comfortably in Earth`s harsher climates would have felt at home. As Sleep put its, Mars ``is no more uninhabitable than Antarctica`` - uncomfortable for humans, but perfect for some microbes. Conclusive evidence for o...

Enzyme mimetic reduces tissue damage in colitis animal study

...c disorders: Ulcerative colitis, which affects the inner lining of the lower colon, and Crohns disease, which extends into the deeper layers of the intestinal wall. In Crohns disease, the damage to the intestine can be so great that large openings, or fistulas, develop in the intestine. Because of diffic...

Gene triggers stem cell differentiation in the intestine

... of neuronal cells, including sensory cells in the inner ear. In the course of those earlier studies, we detected Math1 expression in the intestine, said Zoghbi. Its function there was unknown. However, we knew that the gut has a nervous system of its own, so we thought Math1 might be important for com...

U-M scientists find gene for low-frequency hearing loss

... of information to increase their understanding of inner ear development and function," says Lesperance, an...These proteins are produced in tiny amounts in the inner ear or cochlea - an area that is inaccessible for tissue sampling and difficult to study." Lesperanc...

Hepatitis E recovered from rats in Los Angeles

... in their blood with rates over 20 percent in some inner city areas. Swine have been shown to be a possible...he the high rates of humans with HEV antibodies in inner cities, says Purcell, but more tests need to be done. For the next step they must develop a speci...

Researchers describe atomic-size 'sorter' that performs vital cellular function

...annels. The proteins provide pathways between the inner part of the cell and the exterior. The selectivity filter is the essential part of the pathway. The three-dimensional image of the selectivity filter, revealed by X-ray crystallography, is the culmination of several years work by Rockefeller Universi...

Yale researchers develop new molecule that eradicates cancer by destroying tumor blood vessels

..., a molecule that is expressed specifically on the inner surface of the tumor is needed. The molecule used for this study is called tissue factor, whose normalfunction is to initiate blood clotting. Blood clotting occurs when another molecule called factor VII, which circulates constantly in the blood, bi...

UB biophysicists discover high-speed motility in cells in response to voltage changes

...t time, to compute the charge that is bound to the inner surface of a cell membrane. The discovery of this basic property of cells, irrespective of their sophistication, came somewhat serendipitously. Sachs and colleagues had been trying to measure the motion of single ion channels, membrane proteins tha...

Regulation of vascular tone by a secreted mitochondrial peptide

...lti-subunit complex expressed in the mitochondrial inner membrane, where it uses the energy from oxidative phosphorylation to generate ATP. Surprisingly, this complex can also be found on the plasma membrane of endothelial and other cells, and the fact that it appears to be biologically active suggests th...

First high-resolution structure of a membrane transporter solved at The Scripps Research Institutea weapon against cancer and antibiotic-resistant bacteria

...d A, a component of bacterial cell walls, from the inner to the outer membrane of bacteria and is necessary for bacterial cell growth. It belongs to the ATP Binding Cassette (ABC) transporter molecule family. ABC transporters are ubiquitous on the cell surfaces of almost all organisms. "This is one of the...

Nature's chemical weapons save lives

...ed light on the still relatively poorly understood inner workings of human, bacterial, fungal, and tumor cells. "This has important implications for our continued fight against many human ailments," Romo said, "because the more we know about how cells work, the better we will be equipped in controlling the...

Stem cell research is vital to finding cures for blinding diseases

...d to repair damaged cells in the conjunctiva - the inner surface of the eyelid - that also causes a dry eye condition. Thus, function to the conjunctiva could be restored. "While our knowledge of stem cells in the eye is derived from animals, it is crucial to learn whether these findings also are applicab...

UCSD biologists identify genetic mechanism conferring resistance to 'Bt toxins'

... modify the toxins such that they can bind to the inner lining of the insects or roundworms guts independent of this carbohydrate modification. In their study, the UCSD scientists showed visually, using toxins labeled with Bt dyes fed to normal and resistant forms of C. elegans, that fluorescent tox...

Research team unlocks secrets of the firefly flash

...fireflies, these photocytes are subdivided into an inner region rich in organelles containing luceriferin and luciferase, chemicals that react to generate light when oxygen is available. The photocyte edges are densely packed with mitochondria, "which are quite famous as the oxygen-consuming power plants o...

The world's most powerful NMR spectrometer

...sponses to a radio frequency signal emitted by the inner coil at varying "resonance" frequencies. A typical experiment involves scanning a range of frequencies and recording the responses of the atoms in the sample. These responses are influenced by the shape of the molecule in which the atoms reside by ...

Structural studies reveal how potassium channels are inactivated

...ey solved in 1998 -- showed that the lining of the inner pore consists of hydrophobic amino acids, and the ...ion gate. These studies revealed that altering the inner pore did, indeed, profoundly affect the inactivation gate. Our findings argued that the peptide ext...

Chemists spin materials to improve magnetic resonance data

...outer space, we tune into radio waves emitted from inner space," he said. Grandinetti likened the interference that confounds NMR signals to interference between stations on an FM radio. When a station is far away, music ...

Undergrad's digital model of amoeba helps scientists study human cells

... two-dimensional computer model that simulates the inner workings of a tiny amoeba that behaves like a human white blood cell. Her electronic model is aiding biologists who believe these microscopic animals hold the key to creating new treatments for diseases ranging from asthma and psoriasis to cancer. Ja...

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