Tag: "membrane" at biology news
Researchers study muscle cell damage that occurs when astronauts return from space
...ke a mechanic used to repair a flat, by applying a membrane
patch to the torn spot." Dr. McNeil first identi...ct muscles, the result is microscopic tears in the membrane
of the muscle cells. Dr. McNeil suspects that the muscle soreness athletes experience is probably...
University of Washington professor's new book seeks to rewrite understanding of cell biology
...rounding fluid. In reality, Pollack says, the membrane
isnt key to cell integrity because the water insid...hen the stimulus comes, the vesicle docks with the membrane
wall and opens a passage to the outside, allowing the substance to empty into the external fluid. ...
Key mechanics of cell membrane fusion revealed
...el Hill have developed a new working model of cell membrane
fusion. The model, which apparently mimics the b...luenza, Ebola and other viruses. These viruses use membrane
fusion machinery to enter cells. A report of the study appears in the April 10 issue of the journal...
Potential new anthrax therapy discovered
...dema factor to cross the usually impenetrable cell membrane
and enter the cytoplasm. There, they disrupt normal cell function. The protective-antigen mutants identified by Collier and colleagues most likely act by blocking the formation of a normal protective-antigen channel. The presence of just one mutant p...
Artificial lung on the horizon, reports University of Pittsburgh researcher at International Society for Heart and Lung Transplantation meeting
... the standard of care is the use of extracorporeal membrane
oxygenators, bulky and expensive units that can cause life-threatening complications and death in more than half of those who are treated with them. The device is not envisioned to be used for prolonged support, say as a bridge to transplant, or ...
Researchers discover the ultimate adult stem cell
...ies that bind specifically to proteins in the cell membrane
of mature red and white blood cells. Stem cells do... that sits tightly between the fatty layers of the membrane
of cells. These cells were then injected into female mice that had been irradiated, which destroys t...
Heart attack in a laboratory dish
...ve clearly the change that takes place in the cell membrane
during an attack and how the change sometimes lead...mber of lipids increased in the outer layer of the membrane
because they moved from the inner to the outer layer. This imbalance in phospholipid content probabl...
Researchers find first gene that increases risk of Crohn's disease
...of lipopolysaccharides , a component of the outer membrane
of certain types of bacteria. Cho, Nuez, and colleagues found that the mutated forms of Nod2 were truncated; about three percent of the protein was missing. This altered version of the protein was much less effective in recognizing the bacterial ...
E. coli bacteria may be more useful than you think
...se a 200 millivolt electrical potential across the membrane
to drive one-way proton flow, we will have a controllable turbine," Manson claims. "In addition to direct applications of this technology to microfluidics or nanoscale generation of electrical power, it may be possible to use the bioengineering princ...
Breaking into the brain
...er by brain cells. Sorokin reports that the muscle membrane
contains two proteins called laminin 8 and laminin 10, but that immune cells only move through areas lacking laminin 10. The researchers report that immune cells stick to laminin 10 very strongly, and suggest that this adhesion may prevent cell movem...
Copper is crucial for embryonic deveopment, say U-M scientists
... "Ctr1 escorts copper through the cell's surface membrane
and then hands it off to at least three other prot...o cells that can compensate for loss of the plasma membrane
Ctr1 transporter, and that the presence of at least one functional copy of the Ctr1 copper transport...
Magee-Womens Research Institute study finds undiagnosed sexually transmitted disease infection rate nearly 1 in 5 among adolescent females
...th pregnancy complications such as premature fetal membrane
rupture. In addition, the link between STD infection and HIV transmission is becoming ever more apparent. Self-collection of vaginal swabs was almost uniformly reported as easy to perform, and preferable to gynecological examination, the authors wrot...
Structural studies reveal how potassium channels are inactivated
...utside the cell. Moving potassium through the cell membrane
is critical to numerous life-sustaining functions,...de of a cell. This outflow of potassium allows the membrane
to return to its resting state and prepare for the next impulse. Structural studies conducted durin...
Biologists: Cell nucleus surface more complicated than expected
... called the endoplasmic reticulum, a highly folded membrane
in the cell cytoplasm which has many functions, including protein creation. Using the GFP to highlight chemical sequences associated with the endoplasmic reticulum, the researchers found that deep folds and grooves indented the surface of the nucleus...
Engineers develop technology to reduce industry emissions
...r quality regulations. The equipment called the membrane
electrostatic precipitator not only could help co...e power plant's exhaust system, the newly designed membrane
electrostatic precipitator collects the particles before they can be released into the air via the s...
Researchers uncover a protein defect that causes a milder form of cystic fibrosis
...the protein strands to stick together." CFTR is a membrane
protein with a massive and complicated structure. ...gical techniques in order to accurately study this membrane
protein. This research will add to the body of knowledge about membrane
proteins, which are also imp...
Benefits from Alzheimer's plaque-producing reaction? Science study proposes role in gene expression
...er piece is the APP "tail," which dangles from the membrane
into the cell. Its function has thus far been a mystery. In their Science study, authors Xinwei Cao and Thomas C. Sdhof of the University of Texas Southwestern Medical Center and Howard Hughes Medical Institute propose that the APP tail enters th...
Exploding eggs and rare human disorder help explain water regulation
...mbled upon an unknown protein lodged in the plasma membrane
of red blood cells and kidney tubules. After expressing the protein in frogs' eggs, the scientists discovered that the eggs exploded when immersed in water because they absorbed the liquid much faster than normal. Agre named the protein aquaporin bec...
Researchers discover new way to block HIV transmission by removing cholesterol from cell membrane: Hopkins study finds HIV requires cholesterol to infect
...ls, and removing this fatty material from a cell's membrane
blocks infection, according to a Johns Hopkins stu...hy substance that drains cholesterol from a cell's membrane
can completely block HIV transmission. Using microbicides that contain this cholesterol-depletor dur...
GLUT4 in membrane ruffles
...ansporter GLUT4. Like other examples of regulated membrane
dynamics, this process involves the local rearrang...ere that GLUT4 is inserted into the myotube plasma membrane
at regions of membrane
ruffling, where cytoskeletal remodeling takes place. Perturbing the cytoskele...
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