Tag: "chemical" at medical news
Designing an ultrasensitive 'optical nose' for chemicals
...r applications eventually may include detection of chemical
weapons and land mines, patient breath analysis for medical diagnosis or monitoring, and industrial detection of leaks in subterranean pipes or storage tanks, the company says. Vescent recently signed a Cooperative Research and Development Agreement ...
Reduced risk of institutionalisation in patients with dementia
...es levels of the neurotransmitter acetylcholine (a chemical
'messenger' responsible for sending signals between nerve cells in the brain), which is typically deficient in Alzheimer's disease. However, unlike other treatments, galantamine also has a unique modulating effect on the brain's nicotinic receptors,...
Dopamine key to learning likes and dislikes, says Colorado U. team
...n's disease is caused by lower levels of the brain chemical
dopamine, and the medications increase concentrations of this chemical, these results provide strong evidence that dopamine levels play a critical role in developing our likes and dislikes," Frank said. Much of what is known about the brain comes fr...
Gene-silencing technique offers new way to fight drug-resistant leukemia
... short, double-stranded piece of RNA with a unique chemical
sequence, or tag, that allows it to combine specifically with a particular messenger RNA (mRNA) that shares the same tag. After the siRNA is introduced into a cell it attaches to the mRNA whose tag it shares, and this targets the mRNA for destruction...
Nicotine more addictive when combined with other tobacco smoke chemicals, UCI study finds
...f., Oct. 28, 2004 -- Acetaldehyde, one of the main chemical
components of tobacco smoke, appears to increase t...uropsychopharmacology. Nicotine is the primary chemical
in cigarette smoke that causes addiction, yet when tested in animal studies, the draw of nicotine al...
Smoking affects same 'feel good' brain chemical system as heroin
...ow smoking affects the flow of another "feel good" chemical
in the brain, called dopamine. Now, the team is studying the interaction of dopamine and opioids in the brains of smokers and non-smokers. They also hope to look at underlying genetic differences that might explain variations between people in respon...
Marijuana-like compounds may aid array of debiliating conditions ranging from Parkinson's to pain
...he death or injury of brain cells that produce the chemical
dopamine. "There are therapies that can help repl...the study is called anandamide, a natural internal chemical
that activates the same system as marijuana. Nonsteroidal anti-inflammatory drugs such as ibuprofen ...
Tea could improve memory, study shows
...acetylcholinesterase (AChE), which breaks down the chemical
messenger or neurotransmitter, acetylcholine. Alzheimer's is characterised by a drop in acetylcholine. Green tea and black tea also hinder the activity of the enzyme butyrylcholinesterase (BuChE), which has been discovered in protein deposits which ...
Researchers identify brain protein that halts progression of Alzheimer's
... develop tests that determine whether a particular chemical
or agent in the environment is able to shift the delicate balance between the 'good' and 'bad' proteins," notes Johnson. "This would allow scientists to establish definitive links between environmental exposures and Alzheimer's disease pathology."...
New hope for ALS seen with genetic techniques, growth factors
...tacts with muscle fiber cells. There, they release chemical
messengers that tell the muscles to contract. This point of contact is called the neuromuscular junction. They used a virus to deliver the gene for VEGF to muscle cells, resulting in increased expression of VEGF protein by the muscle cells. Once the...
Gender and sex hormones affect the brain's pain response and more, according to new studies
...substantial stressor are mediated through specific chemical
systems in the human brain and that these responses are modulated by blood levels of sex hormones," says Zubieta. The linking of pain sensitivity and regulation to reproductive hormones--particularly estrogen--makes some "evolutionary" sense, Zubiet...
New understanding of neural circuits may help development of thought-controlled prosthetic devices
.... When nerve cells signal each other electrically, chemical
changes happen inside the cell. For example, electrical activity in a nerve cell causes tiny amounts of calcium ions to flow into the cell, and optical techniques can highlight this change. "There are particular fluorescent dyes that change the amoun...
Northwestern University receives $7.5 million for regenerative medicine
...enting the fields of chemistry, materials science, chemical
and biomedical engineering, neurology, endocrinolo...AM, are Annelise E. Barron, associate professor of chemical
and biological engineering; Dixon B. Kaufman, M.D., professor and vice chair for research in the dep...
Experts debate benefits, dangers of chlorine in C&EN point-counterpoint
...inary membership of more than 159,000 chemists and chemical
engineers. It publishes numerous scientific journa...nform readers about the latest developments in the chemical
NIDA sponsors frontiers in addiction research mini-convention
...on will review how mechanisms associated with this chemical
messenger in the brain contribute to and interact with other neurobiological processes and substrates to influence various aspects of drug abuse and addiction. The NIDA co-chairs are Dr. David Shurtleff and Dr. Minda Lynch. 7:30 p.m. to 8:15 p...
Biotech breakthrough in islet cell replacement for type 1 diabetes
... endocrinology, materials science and engineering, chemical
and biological engineering and chemistry. The gra...logy; as well as Lonnie Shea, assistant professor, chemical
and biological engineering, biomedical engineering....
'Energy blocker' kills big tumors in rats
... in the lab continue to be promising, however, the chemical
or one like it may become an option for treating advanced liver cancers and perhaps other tumors in people. "Liver cancer usually isnt detected in people until its difficult or impossible to treat, and many other aggressive cancers spread to the ...
Sealing corneal incisions with a drop of chemistry, BU researchers develop gel for cataract surgery
...stances for medical applications. By controlling chemical
composition, structure, and molecular weight of th...Chemistry address issues in theoretical chemistry, chemical
physics, photochemistry, inorganic and organic chemistry, physical chemistry, and biochemistry. Fac...
Global air pollution map produced by Envisat's SCIAMACHY
...m this and other similar sensors could be used for chemical
weather and air quality prediction in future," Beirle added. "For now we are focused on using the SCIAMACHY results to quantify the contributions of the different sources of nitrogen oxides such as fossil fuel combustion, biomass burning, lightning ...
Barbed sutures, wrinkle fillers give patients more innovative, non-surgical options
...ecovery. This new laser treatment may replace deep chemical
peels and laser skin resurfacing, which often leav...thout liposuction. The treatment, a combination of chemical
and herbal remedies injected directly into the body, allegedly helps increase circulation to the tar...
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