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1817年由Berzelius发现硒元素(Selenium)后的一百多年时间里,它一直被认为是有毒元素。直到本世纪中期,Schwarz等人发现了硒具有预防大鼠肝坏死的作用,第一次证明了硒具有营养作用。此后,又有大量的研究证明硒对动物和人体的健康至关重要。 70年代初,我国克山病研究者发现,克山病在本质上是属于一种地球生物化学疾病,在土壤贫硒地区此病的发病率很高。患者的心脏扩大、房室传导阻滞、心动过速或过缓、心源休克或心力衰竭,从而丧失劳动力。给予亚硒酸钠进行防治,收到良好效果。大骨节病是流行于低
It was considered a toxic element for over a hundred years after Berzelius discovered Selenium in 1817. Until the middle of this century, Schwarz et al. Found that selenium had the effect of preventing hepatic necrosis in rats, and for the first time proved that selenium has a nutritional effect. Since then, a large number of studies have proved that selenium is essential for the health of animals and human beings. In the early 1970s, Keshan disease researchers in our country found that Keshan disease is essentially a kind of earth biochemical disease, and the incidence of this disease is very high in the area where the soil is poor in selenium. The patient’s heart is enlarged, atrioventricular block, tachycardia or bradycardia, cardiogenic shock or heart failure, resulting in loss of workforce. Give sodium selenite for prevention and treatment, received good results. Kashin-Beck disease is prevalent in low