Tag: "tubular" at biology news
Laboratory grows world record length carbon nanotube
...ll, but instead of being a sphere, the nanotube is tubular
in shape. Until the advent of the Los Alamos/Duke discovery, the length of carbon nanotubes had previously been limited to a few millimeters. Zhu, a scientist in the Materials Science and Technology Division, said, "although this discovery is really ...
JCI table of contents, 1 June 2004
...the Kidney's Differentiated TITLE: Distal renal tubular
acidosis in mice that lack the forkhead transcription factor Foxi1 AUTHOR CONTACT: Sven Enerback Goteborg University Goteborg, Sweden Phone: 46-31-773-3334; Fax: 46-31-416-108 E-mail: firstname.lastname@example.org View the PDF of this article at: htt...
Discovery offers clues to origin of life
...ty, the team compared the relationship between the tubular
structures and the metamorphic mineral growth. "On the microscopic level, we see that during metamorphism, the new minerals cross cut the preserved biological features," said Muehlenbachs. "This means that the biological features pre date the metamor...
Major mutations, not many small changes, might lead way to new species
...ated M. cardinalis, on the other hand, has a deep, tubular
shape that excludes bees but is easily probed by the slender beaks of hummingbirds, and has red or deep yellow-orange petals, colors bees can't see. These and other differences make the species of monkeyflowers distinct and nearly eliminates crossbr...
Obesity and blood pressure
... catalyze their formation are altered in the renal tubular
sites after the treatment of high fat diet. The c...y that decreased synthesis of these eicosanoids at tubular
sites during the treatment of HF diet impacts on the regulation of renal function and blood pressure...
Molecule found to be critical for kidney development
... the inhibitor there were fewer and less developed tubular
structures in the treated compared to the untreated kidneys. These differences became more pronounced after five days of treatment: Tubes in untreated tissue branched an average of 10 times and the tips of these branches had consistent, small diamete...
Cells' ability to live without oxygen give clues for treating major diseases
...s found at least two key pieces to survival in the tubular
cells of the kidney. Tubular cells are the most co...disease and diabetes, Dr. Dong has found that some tubular
cells seem to adapt by up-regulating two genes, IAP-2 and Bcl-xL. When he knocks down the genes, the...
JCI Table of Contents, 15 August 2003
...nked kinase (ILK) is specifically induced in renal tubular
epithelial cells in response to TGFbeta1 and that ...ITLE: Role for integrin-linked kinase in mediating tubular
epithelial to mesenchymal transition and renal interstitial fibrogenesis AUTHOR CONTACT: Youhua Liu...
New gene found for children's lethal kidney disease
... up in tiny appendages called cilia found in renal tubular
cells in the kidney," Otto says. "Renal tubular
cells return important substances, which were removed by the kidney's glomerulus filtering system, b...
The area where carcinogens settle may be a key factor in developing lung cancer
...s is much slower in the airway carinas than in the tubular
airway segments. The methods currently used to calculate exposure to particles do not take into consideration the inhomogeneity of either the deposition of the toxin or the clearance patterns of the site. The reported locations of cancer manifestati...
JCI table of contents, 16 June 2003
...differentiate into the cell type specific for that tubular
segment, and repair the necrosis. This report challenges the current paradigm for repair of tubular
necrosis and suggests that approaches aimed at bone marrow stem cell propagation and delivery to the...
Possible new cell type found in developing inner ear
...bryo, Dr. Sohal's animal model, the neural tube a tubular
structure that gives rise to the brain and spinal cord has formed and is covered with a skin called the surface ectoderm. That same day, an area of the skin on either side and about midway down the neural tube begins to thicken into what is known as...
Computer model offers noninvasive evaluation for abdominal aortic aneurysm rupture risk
...e now use a less-invasive procedure that threads a tubular
device called a stent-graft into the weakened area. "But because surgical repair carries its own risks, being able to pinpoint when an AAA is likely to rupture gives surgeons a valuable tool," said Elena DiMartino, Ph.D., a research associate in Pitt...
JCI table of contents, October 21, 2002
...sms of caspase-1- and IL-18-mediatedischemic acute tubular
necrosis in mice Acute tubular
necrosis is the predominant pathological process in animalmodels of ischemic acute renal failure (AR...
Finding sheds new light into mysterious process of cell movement during development
...implicated in malformation of the neural tube, the tubular
structure that develops into the brain and spinal cord. Somewhat later in zebrafish development, a number of motor neurons move from one part of the brain to another. "We don't understand why they move because they can form the connections they need...
Patients with serious kidney disorder produce natriuretic peptides at above average rates
...zation studies demonstrated CNP mRNA expression in tubular
cells and glomeruli of normal human kidneys. CNP ...ity, distal and medullary (marrow) collecting duct tubular
cells in both control and NS patients. Plasma CNP and urinary CNP to creatinine (a component of uri...
Experiments reveal ancient blood flow map
...lation of blood cells acquired the ability to form tubular
structures through which the rest of blood cells could then move. Eventually the tubules invaded the heart to form the closed circulatory system that we know today. Nam Cho, Krasnow and colleagues at Stanford University, and Felix Karim and colleague...
December Media Mighlights: GEOLOGY and GSA TODAY
...the Cambrian Period. They are represented by thin, tubular
and globular fossils millimeters to centimeters in size, which were originally described from Namibia. The newly found occurrence in western Canada extends their known range halfway around the globe; it also provides additional insight into the diver...
Single virus tracing sets the stage for new infection-fighting drugs and gene-therapy strategies, Science authors say
...ur much faster than previously believed. Moreover, tubular
structures might serve as pipelines for viruses, w...oteins have extended into the existing, well-known tubular
structures, or "pipelines," which are formed inside the nuclear area during infection events (result...
Medical imaging shows dinosaur heart more like bird's or mammal's than reptile's
...ges revealed two neighboring cavities and a single tubular
structure positioned like an aorta. The cavities are probably the heart's lower chambers, the ventricles. The walls of the upper chambers, the atria, are usually very thin and probably collapsed when the dinosaur died. Birds and mammals also have fou...