Tag: "smooth" at biology news
Gene-Altered Mouse May Provide New Insights To Parkinson's Disease, Substance Abuse And Schizophrenia
...s. Because neurotransmittersare so critical to the smooth
functioning of the nervous system, the bodyhas evolved a precise system for regulating them. This neurotransmission system involves two main elements: receptors andtransporters. Receptors are the molecular "locks" on nerve cellsthat receive a neuro...
Mathematics Reveals New Pattern Of Brain Cell Activity
...ooth. But we discovered that it can producea very smooth
wave that will spread through other cells, just li... The researchers found that the key to producing a smooth
wave was notwhether a cell communicates in an excitatory or inhibitory way, but ratherwhich cells it...
NIGMS Makes First Awards For
...es, H2S is produced in the brain and ininvoluntary smooth
muscle. An understanding of the role of H2S in these tissuesmay have many therapeutic applications, for example, in the control of bloodpressure. (Hideo Kimura, Ph.D., Salk Institute for Biological Studies, SanDiego, CA) An investigation of how ti...
Biochemist Solves Riddle Of Collagen Stability
... bovine collagen is used to provide fuller lips or smooth
away wrinkles. But those improvements don't last, Raines said, because the material starts breaking down after a few months. Collagen loses its stability over time by actually unraveling at the molecular level, which makes it susceptible to enzymes t...
New Study Shows White Males Have More Receptors For Patent Blood-Vessel Contracting Substance
...es vessels toconstrict, is located in the vascular smooth
muscle, and ETB, located in theendothelium, usually causes vasodilation, depending on the species and tissuelocation. The current study showed that males had a 75-25 ratio of ETA receptorsto ETB, while in females the numbers were closer to 50-50. Mal...
Biggest Acoustics Meeting Ever
...edges arebetter at shielding sound than those with smooth
walls. Penelope Menounou and her colleagues at theUniversity of Texas ( firstname.lastname@example.org ) have come up with an explanation for this phenomenon(1aNSb2). Maria Heckl of Keele University in England ( email@example.com ) will describe ...
Engineered Neo-Organs For Bladder Replacement
...autologous cells from the bladder epithelium, plus smooth
muscle cells. The cells had been expanded separately from a previously harvested autologous bladder biopsy. The researchers performed preoperative and postoperative urinary flow and X-ray studies. After their initial operation and recovery, the an...
Scientist Receives Prestigious Award
...ls. He showed thatit controls the tone of vascular smooth
muscle integral to cardiovascularfunction. This discovery has spurred further research to develop drugs to blockthe hormone's action, and clinical trials are now under way. "We try to identify individuals who show clear signs of brilliantcare...
New Evidence For Growth Factor Role In Crohns Disease
...uring this thickening, wholesections of intestinal smooth
muscle cells can become encased in a denseovergrowth of fibrous collagen. According to the UNC scientist, the new findings raise the possibility thattreatment aimed at blocking IGF-I in the bowel could prevent fibrosiscomplications, such as in...
The Evolution Of Beauty, Part Of A Special Section On The Evolution Of Sex In The 25 September 1998 Science
...f their mating display.As it turns out, the mites' smooth
moves do indeed boost their chances ofattracting a mate. Another example can be found among moths that have evolvedthe ability to detect the ultrasonic echolocation calls of bats, a key predator.A subset of this group, more recently evolved, can also...
Angry Biotech Firms Are Blaming The Industry Leader For Bringing Modified Crops
...ing themood in Europe. Monsanto was convinced that smooth
acceptance of transgenic soyain the US would be mirrored in Europe. The entire industry is now having to deal with the consequences of thatmiscalculation. Though wary of breaking a tradition of solidarity againstopponents of genetic engineeri...
Nuts And Oats May Build A Strong Heart
...xseed and flaxseed oil anda leafy vegetable called smooth
purslane which is eaten mainly in Greece.Albert stressed that her results are preliminary because the questionnairesasked only whether the physicians had eaten nuts, not what kind or how many theyate. Also, other factors of diet or risk factors for ...
American Heart Association Announces Top 10 Research Advances For 1998 -- Gene Therapy Among The List
...akes blood vessels dilate by relaxing the vessels' smooth
muscles.Nitric oxide is a key component to blood pressure. Levels of nitric oxide normally rise when someone is in a stressful situation. A lack of nitric oxide in the bloodstream, or a lack of reactivity by the blood vessels to nitric oxide, can n...
Flexible Membranes - Moving Through The Twilight Zone Between The Nano- And The
...themicrometer scale is well understood in terms of smooth
surfaces as described bydifferential geometry. In ...kness, however, the membranes are found to undergo smooth
bendingundulations. Using these computer simulations, it was even possible to estimate the bendingri...
New Coating Process May Prevent Body From Rejecting Medical Implants
..., a layer of the desired proteins is spread over a smooth
surface likemica. The proteins and mica are then coated with a thin layer of sugarmolecules. Next, a Teflon-like fluoropolymer coating is applied to the surfacethrough a gas-phase plasma deposition process. The coating is then peeled offthe mica and ...
Functional Arteries Grown From Cells Using Novel System That Simulates Fetal Environment
...After eight to 10 weeks within the bioreactor, the smooth
muscle cellsproliferated and filled all the spaces...major problem facing researchers is that while pig smooth
musclecells grow easily and rapidly outside the body in tissue culture, similar humancells are more ...
Reducing VOC: new polymer coating process combines high degree of flexibility with improved environmental properties
...iscosity, adhesion and other properties needed for smooth
application of the coatings, said Schwerzel. The researchers also must explore other catalysts used to trigger the curing process. "These are solvable issues," Schwerzel added, "but they will take some time and effort in both b...
Mathematics reveals inner workings of potassium pipeline
..., for example, developnew ways of affecting airway smooth
muscle, which might have implications forasthma," said MacKinnon....
Mechanical forces found to exert larger role in blood vessel health and disease
...transmural fluid flow stimulates thecontraction of smooth
muscle cells, which lie deep within the vessel wal... pressure. To estimate the shear stress levels on smooth
muscle cells, the group used acomputer simulation often used to model the flow of oil through sandst...
New electrical transformers will improve power quality
...um developed a new class of transformers that will smooth
out the uneven voltages that plague today's grid and prematurely age electrical hardware ranging from light bulbs to motors to power supplies in electronic equipment. They are designed with so-called "solid state" technology, meaning they rely primar...
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