Tag: "surface" at medical news
Duke Study Suggests New Class Of Drugs Could Bypass Leptin Loop
...nthetic form of noradrenaline -- directly onto the surface
of fat cells,essentially bypassing the leptin circ...c nervous system to release noradrenaline onto the surface
of brown fat cells. Noradrenaline binds with B3 adrenergic receptors on the fat cell surface.This b...
Laser Shown Effective In Patients Who Are Not Candidates For Bypass Surgery Or Angioplasty
...o 8-inch incision in the patient's side. Once the surface
of theheart is exposed, the doctors fire short pulses of laser energy into theleft ventricle -- the heart's main pumping chamber -- while it is engorgedwith blood. A computer synchronizes the laser pulses with the pumping ofthe heart, and the blood ...
Laser Offers Hope For Heart Patients With No Alternatives
...nch incision through the patient's side. Once the surface
ofthe heart is exposed, they fire short pulses of laser energy into the leftventricle -- the heart's main pumping chamber -- while it is engorged withblood. A computer synchronizes the laser pulses with the pumping of theheart, and the blood in the ...
Antimicrobial "Bug Spray" Found In Human Lung Cells
...milar bug spray. "That nozzle is a channel on the surface
of lung cells called CFTR, and we already knew that CF disrupts it," says Ko. In a study funded by the National Institute of Diabetes and Digestive and Kidney Diseases and the Cystic Fibrosis Foundation, Ko exposed two batches of lung cells, one from...
Study Injects New Interest In How Vaccines Work
...e antibodies -- are condensed and collected on the surface
of aluminum hydroxide particles. Since 1934, alumi...ur, it's likely that whatever was collected on the surface
is being released within a fairly short time." Though he does not have an alternative theory to expl...
Common Drug-Capsule Coating Not As Inert As Previously Thought
...ely used for drugencapsulation and as a protective surface
coating for biomedical applications. Its popularity as a surface
coating has been based -- in part -- on thebelief that the material forms an inert, steric barrier t...
NIH Honors Emory Researcher With Merit Award For Work On Renin-Angiotensin System
... the AT1 receptor to send messages from the cell surface
to thecell nucleus. In response to angiotensin II,...cascading pathway, messages are sent from the cell surface
to the cell nucleus.Although receptors for several other kinds of cell mediators are known to usethi...
Affordable, Hand-Held Biosensor For Diagnostics
...quare of this silicon forest is stretched out, its surface
area would be about as large as a standard desktop.ediscovery of some "new physics" inside the porous silicon film. Though not fullyunderstood, the scientists speculate that the binding of molecules to thesurface significantly alters the refractive i...
MIT Solution To Math Problem Could Lead To Better Dental Implants, More Resistance To Missiles
...r such that the proportion of one isgreater at the surface
but is gradually replaced by another with depth. .... "It's made in such a way that the material atthe surface
is very sharp. But that material is also brittle and can break, soas you go inwards the material cha...
Snipping Inflammation In The Bud; New Agents May Provide Relief
...ectin that, withmany other proteins, populates the surface
of cells. "L-selectin helps mediate an inflammator...ydrate groups attached to protein molecules on the surface
of an opposingcell," said Kiessling. "The many copies of L-selectin on the white blood cellsurface b...
X-ray Microscope Designed To Study Jet Engine Components Now Probes Tooth Dentin
...amel of teeth because about 97 percent of the hard surface
material ismineral. But because tooth decay eats ...ing a filling, they use an acid todemineralize the surface
of the cavity. This process removes the mineralmaterial from the dentin, leaving a framework of col...
Widely Used Therapy May Not Be Effective In Treatment Of Acute Stroke
... Stroke often results when blood clots form on the surface
of the plaques in thearteries. The blood clot may close off the artery entirely or a piece of theclot may break off and travel to the brain (embolism). For many years,medications such as antiplatelets (for example, aspirin) and anticoagulants (forex...
PITT Researchers Demonstrate Human Brain's Natural Mechanism For Guarding Against Errors
...gulate cortex (ACC), which is located on the inner surface
of the frontallobes, in the middle of the front part of the brain. In the Pitt study, researchers used event-related fMRI to look into thebrains of 13 people while they performed variants of the Continuous PerformanceTest designed both to inc...
Prevalence Of Silicosis Studied In Surface Coal Miners
...shey, Pa. --- New research finds that 9 percent of surface
coal miners in thebituminous coal regions of weste...lvania have silicosis. The study alsofound that of surface
coal miners who worked as drillers more than 20 years, 61percent had silicosis. The researc...
Brain Tumor Treatment In Multicenter Tests
... the shower. "Thedrug within the wafer reaches the surface
and is released into the brain. Butthe drug that's inside the 'bar of soap' is protected; the water can't get inand deactivate it." The polymer package for the chemotherapy wafer was initially developed inthe 1980s at M.I.T. by Dr. Robert Longe...
Crystal Structure Of gp120 Reveals HIV In Action
..., an unprecedented peek at that process -- a viral surface
glycoproteincaught in the act of binding a CD4 T cell receptor -- graces the covers of boththe June 18 issue of Nature and the June 19 issue of Science magazines. The long-sought crystal structure of gp120 in action is a collaborativeeffor...
EPA Choosing Lab Science Over Epidemiology To Establish Drinking Water
...s per year may be caused byexposure to chlorinated surface
water be seen as second-class science?" EPA also"conveniently ignored" a new paper by Melnick et al. from the National Instituteof Environmental Health Sciences showing that cell proliferation is not"required" for chloroform to cause cancer. "It seem...
Tiny Pellets Could Deliver Alzheimer's Drugs
...Belcheva has developed one solution by coating the surface
of the NGF molecule with a water-soluble polymer called polyethyleneglycol, giving the protein a protective plastic shell. This has the potential of being injected directly into the brain via a large-bore needle or catheter. Belcheva has modified t...
Unsticking The "Glue" In Blood Cells Could Save Lives
...If the skin is cut, sticky molecules appear on the surface
of theplatelets, which rush to thesite and adhere to the broken vessel wall to prevent blood loss. But sometimes,a medical disordercan set off the sticky response. If these platelets stick to each other and form a clot that stopscritical blood flow t...
Neurotransmission Machinery Visualized For The First Time
...ossing the synapse and binding to receptors on the surface
of a neighboringneuron. Yet, scientists have had only a murky picture of the events within thesecreting neuron that trigger the release of neurotransmitters. Now, a group of researchers led by Axel T. Brunger, a Howard Hughes MedicalInstitute (HHMI) ...
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