News tagged with drug
Light-induced delivery of nitric oxide eradicates drug-resistant bacteria
Researchers at the University of California, Santa Cruz, have developed a novel approach for eradicating drug-resistant bacteria from wounds and skin infections, using light to trigger the controlled release of nitric oxide. ...
1 hour ago |
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Speeding up drug discovery with rapid 3-D mapping of proteins
A new method for rapidly solving the three-dimensional structures of a special group of proteins, known as integral membrane proteins, may speed drug discovery by providing scientists with precise targets ...
4 hours ago |
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Tendency of operational routines to falter is widespread but fixable
New research by a University of Illinois expert who studies process management points to the potential role of regulatory oversight in preventing deterioration of operational routines that are used to complete day-to-day ...
Other Sciences / Economics & Business
4 hours ago |
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Fabrication of new elastic 'soft capsule' using nano-sized flakes
A research group headed by MANA Scientist Dr. Qingmin Ji of the National Institute for Materials Science (Japan), in joint study with Prof. Frank Caruso of the University of Melbourne, developed a new elastic ...
Nanotechnology / Bio & Medicine
5 hours ago |
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New study shows why swine flu virus develops drug resistance
Professor Adrian Mulholland and Dr Christopher Woods from Bristol's School of Chemistry, together with colleagues in Thailand, used graphics processing units (GPUs) to simulate the molecular processes that take place when ...
May 29, 2012 |
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Drug
A drug, broadly speaking, is any substance that, when absorbed into the body of a living organism, alters normal bodily function. There is no single, precise definition, as there are different meanings in drug control law, government regulations, medicine, and colloquial usage.
In pharmacology, Dictionary.com defines a drug as "a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being." Drugs may be prescribed for a limited duration, or on a regular basis for chronic disorders.
Recreational drugs are chemical substances that affect the central nervous system, such as opioids or hallucinogens. They may be used for perceived beneficial effects on perception, consciousness, personality, and behavior. Some drugs can cause addiction and habituation.
Drugs are usually distinguished from endogenous biochemicals by being introduced from outside the organism.[citation needed] For example, insulin is a hormone that is synthesized in the body; it is called a hormone when it is synthesized by the pancreas inside the body, but if it is introduced into the body from outside, it is called a drug.[citation needed]
Many natural substances such as beers, wines, and some mushrooms, blur the line between food and drugs, as when ingested they affect the functioning of both mind and body.
For more information about Drug, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
