Depressed in winter may relate to genetic mutation

Depressed in winter may relate to genetic mutation
Washington, November 3 (Xinhua) (reporter Zhang ZhongXia) Entering winter, some people will present depression at various degrees. One American scientist discovers newly, depressed in winter to relate to a kind of genetic mutation in the human body.

Depressed generally since the end of autumn in winter, as long daytime of night being short, some people feel in the regular meeting of the whole winter that can not lift spirit, this is called in medical science " Season disposition thread lacks proper care (S A D) " . Usually treat the depressed sampling of winter " The mere treatment " ,The patient accepts every morning the strong light of some time shines, attempt to " inveigle " The brain, makes the brain think that has not been so short in daytime, the sunlight was not so dim as in the imagination too. Statistics reveal, probably the depressed patient has family's medical history in 29's winter.

The scientific research personnel from organizations such as University of Virginia,etc. deliver and study saying on the latest Dutch " disorder magazine of the emotion ", according to experimental analysis, it is causing one of the depressed reasons in winter that a kind of mere pigment gene responsible for the sensitization protein of the code of the eye morphs. This variation enables people's sensitivity decline to the light, need stronger illumination level and could maintain the normal physiological function, the mood of persons who can bring out these genetic mutations of illumination completely not of winter lacks proper care.

Depressed patient and 90 healthy persons carry on genetic analysis after researchers have chosen 130 winters. Found finally, there are 7 people that carried mutant two duplicates of above-mentioned gene in 220 research objects, and these 7 people are all depressed patients in winter.

Study director Igor Nahsi Provan and Del and say, if take two duplicates with this variation gene alone, then depressed probability is 5 times of the normal people's in the winter that it suffers from. "There are many kinds of potential inducements in generally speaking disease of the unregulated respect of mood, so 5 One time of morbidity risks to the ordinary person can be regarded as a quite high influence factor " ,This expert points out.

In U.S.A., probably the person of 6 suffers from depressed in winter at various degrees. Provan and Del says, this new discovery will help scientific research personnel to find out about the depressed morbidity mechanism in winter, may develop better method and help to diagnose the depressed patient in winter after further investigating in the future.
Depressed in winter may relate to genetic mutation