American scientist: Have found the reason that can alleviate itching of scratching itching

American scientist: Have found the reason that can alleviate itching of scratching itching
According to Britain " Daily Telegraph ", a latest research of the American scientist has revealed the secret that can alleviate itching of scratching itching. The researcher will interfere with and the sense of preventing the nerve of skin from itching is transmitted to the brain when people scratch to itch, if the researcher claim, and then let people produce the feeling that pruritus has stopped.
On the latest magazine of " neural science naturally " published, the scientist of the university of Minnesota state of U.S.A. announces this research results of theirs. This research person in charge, Minnesota state university professor Glen - Giessler says, when people are scratching to itch, will stimulate various pain and sense of touch receptor of the same skin position, thus the janitor who interfered with pruritus and experienced. Like a lot of sensory systems of the human body, sense of pain and sense of touch receptor are activated, will produce one " Inhibit around " The effect, the pruritus signal preventing the pruritus receptor from sending out, then the pruritus sense is " closed" transiently Have lost. Although it is so contribute to relieving the pruritus sense, but can only solve the matter of great urgency to scratch, if it is too quickly to exert oneself, number of times is too much, the skin may receive the further stimulus, perhaps will also be scratched.
However, researchers emphasize, may get up to the result by holding in hand only when the skin really itches at the same time. Neuroscientist think discovery this can use for, study chronic the intersection of pruritus and therapeutic method of disease or make alleviating itching medicining effective. Already research has indicated, have a special position on the spinal, are known as the spinal thalamus bunch before this. The spinal thalamus bunch makes people produce the main reason why pruritus feels. The scientists find, the skin cells of this position are more sensitive than cells of the other positions in response of the material to itching. The reason for producing pruritus is numerous. Full of own questions of skin, such as eczema or psoriasis; Even because the other diseases of health of some, such as herpes zoster or gallbladder question. Certainly, and a lot of other reasons, still indeterminate at present.
Feeling of pruritus cause by the intersection of pruritus and receptor (itch, feel nerve endings) Stimulated by some materials, these stimulate material include, can initiate ergamine material that immunity reply, the intersection of opium and kinds of material, neural the intersection of peptide and (endorphin and the intersection of signal and molecule to regulate pain that release under brain) to relieve pain , responsible for, transmit acetyl choline and 5 - the intersection of hydroxy and the intersection of color and amine, can let the intersection of spinal and nerve cell produce prostaglandin of sense of pain,etc. of signal among nerve cell. These material amazing the function generally and inflammation, dry and relevant, or relate to some other skin, eyes mucous membrane or damage of the conjunctiva. Generally speaking, pruritus relates to activation of a kind of pruritus receptor, this kind of receptor is formed by some special nerve cells, the scientist calls them C - fiber. Theirs " The appearance " The same with keenlying feel the nerve cell, but the function is completely different, are only responsible for conveying the feeling of pruritus. As the skin is stimulated, C - fiber carries and stimulates signals, conveys to the spinal and reaches the brain finally along the nerve.
The scientists have verified this statement on some primates again. They pass one bunch of positions of spinal thalamus that scratch experimental subjects, have prevented this position from conveying the feeling signal of pruritus to the brain effectively. Glen - Giessler says, though people's study on pruritus has already had the time of one about century, but not found a kind of one that came into force alone and resisted and itched the treatment. But many some and oral medicines contribute to inhibiting the pruritus sense, include some lotion and cream, resist ergamine medicine, a kind of opium antagonist, aspirin. In addition, the ultraviolet treatment can relieve the pruritus sense too. The scientists hope this discovery can help the mankind to further understand the complicated reason why skin itches, can even further work out the effective method to treat pruritus.
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