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Tag: "compound" at biology news

No link found between caffeine intake and development of hypertension in women

...ate that it is not caffeine but perhaps some other compound contained in soda-type soft drinks that may be responsible for the increased risk in hypertension. If these associations are causal, they may have considerable impact on public health." ...

Scientists show how thinking can harm brain cells

...e exposed to platelet-activating factor, or PAF, a compound that promotes inflammation and plays many roles in the brain. It can be produced by neurons and takes part in the working of synapses, including activity associated with learning and remembering. It also is produced by immune cells during inflammatio...

Preclinical study of a new brain tumor therapy

...ssociated with viral infections and linked it to a compound that could bind to EGFR. As a result of the defence mechanisms that have evolved to protect mammalian cells from viruses, cells are programmed to die once they take up this particular nucleic acid. The treatment therefore eliminates the tumor cells b...

A real time look at interactions between RNA and proteins

...cific target messenger RNA (mRNA). There is also a compound on the molecule that can be activated by light and will cross-link the PNA to whatever protein is nearby. The researchers isolated an array of proteins from the complex of the PNA, the targeted mRNAs, and associated RNA-binding proteins. The cells ar...

Duke to test bird flu vaccine dosing

...or College of Medicine. "We hope that by adding a compound called an adjuvant to the vaccine, we can create a stronger immune response to smaller doses of the vaccine," said Emmanuel Walter, M.D., associate director of the Duke Clinical Research Institute's Primary Care Research Consortium and leader of the ...

Liquid ventilation

...ll formed. Moreover, they often lack surfactant, a compound formed by proteins and lipids that avoids the lungs folding in on themselves before the baby gets stronger. The respirators usually employd in these cases provide artificial surfactant, but not always in sufficient amounts to provide correct thera...

UC Berkeley researchers create a biologically-inspired artificial compound eye

...rnia, Berkeley, has created a series of artificial compound eyes. These eyes can eventually be used as camera...ame hexagonal, honeycomb pattern as in an insect's compound eye, but each is also remarkably similar in size, design, shape and function to an ommatidium, the i...

Mining for gems in the fungal genome

...ods to find secondary metabolites located just one compound at a time, and sometimes required prior knowledge about the compound of interest. Even after the genetic sequence of Aspergillus nidulans was completed in 2003, the sea...

Experimental TB drug effective against resistant and latent mycobacterium tuberculosis

...t forms of the disease but could also be the first compound to treat the latent stage of infection as well. R...fense Research Meeting. "The class of which this compound is the lead has a very different mechanism of action from any other drug currently used to treat tub...

Heart-healthy compound in chocolate identified

...ional team of scientists has pinpointed a chemical compound that is, in part, responsible, for the heart-healt...e the levels of urinary nitric oxide -- a chemical compound already known to be associated with healthy flow of blood through the arteries. The Kuna project wa...

New compound stops brain cell degeneration in Alzheimer's disease

...versity have developed a novel orally administered compound specifically targeted to suppress brain cell infla...ron loss associated with Alzheimer's disease. The compound is also rapidly absorbed by the brain and is non-toxic ?important considerations for a central nervo...

Virginia Tech scientists develop process for creating biocompatible fibers

...id Long. The researchers fabricated this natural compound into a sub micron fiber ?100 times smaller than a human hair. "It is the first demonstration that electrostatic spinning, or electrospinning, a polymer processing technique, can be used with a small molecule to produce a fiber. "Clothing fibers such ...

How taste response is hard-wired into the brain

...esearchers engineered flies so that the hot pepper compound capsaicin would selectively switch-on either the sweet-detecting Gr5a neurons or the bitter-detecting Gr66a neurons. Normal flies do not respond to the hot pepper taste. The researchers found that flies engineered to recognize capsaicin on the sweet...

Study in Science holds promise for a new approach to drug therapy

...gh affinity for the hotspot to be chosen as a lead compound in further experiments. In a standard drug discove... compounds (21 in this case) similar to their lead compound to see if any small change to the lead would drastically affect its drug potential. Researchers te...

New compound protects against liver cancer

Scientists have identified a new compound called CDDO-Im that protects against the developme...e journal Cancer Research. CDDO-Im is a synthetic compound that belongs to a class of cancer-fighting compounds called triterpenoids under development by Dr. M...

Researchers reveal lung's unique innate immune system

..., because their activation is inhibited by TGFb, a compound expressed in the lung by epithelial cells. "Because the microenvironment of the alveola is a delicate one, it would be damaged if the macrophage immune system was in a constant battle-ready status," said Raz. "This could readily lead to the type of...

Scientists develop a way to make the deadliest toxin known even more toxic

...toxin is the most poisonous toxin known, finding a compound to activate it might seem somewhat counterproductive. But the range of clinical uses for the toxin have increased well beyond its cosmetic use--multiple sclerosis, stroke, cerebral palsy, migraine, and backache are just a few of the conditions for wh...

Alzheimer's study first to explain death of brain cells

...hat amyloid-beta readily binds with heme to form a compound that can be flushed from cells. When there is insu...ound. When they examined the heme/ amyloid-beta compound researchers in the Atamna laboratory were surprised to discover it was a peroxidase--a type of enzym...

Rice University researchers create 'nanorice'

...hat amyloid-beta readily binds with heme to form a compound that can be flushed from cells. When there is insu...ound. When they examined the heme/ amyloid-beta compound researchers in the Atamna laboratory were surprised to discover it was a peroxidase--a type of enzym...

Polymer aids in blood clotting, pointing way to new treatment

...ege of Medicine at Urbana-Champaign. The inorganic compound accelerates two parts of the coagulation cascade -- the contact-activation pathway and factor V, a protein that forms thrombin -- leading to fibrin and clots. Finally, he said, polyphosphate delays the breakdown of clots, which causes renewed bleedin...

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