selenium deficiency

Cardiology An absence of selenium in the diet, with ↑ binding of hepatic nucleoproteins to DNA regulatory sequences, and activation of transcription in response to oxidative stress; SD has been implicated in colon polyp formation, endemic cardomyopathy, Keshan disease–attributed to a defect in glutathione peroxidase activity, without which there is ↑ platelet aggregation due to impaired free radical salvage or in the catalytic function of type I deiodinizing thyroxine-activating enzyme. See Keshan disease.

单词	selenium deficiency
释义	selenium deficiency selenium deficiency Cardiology An absence of selenium in the diet, with ↑ binding of hepatic nucleoproteins to DNA regulatory sequences, and activation of transcription in response to oxidative stress; SD has been implicated in colon polyp formation, endemic cardomyopathy, Keshan disease–attributed to a defect in glutathione peroxidase activity, without which there is ↑ platelet aggregation due to impaired free radical salvage or in the catalytic function of type I deiodinizing thyroxine-activating enzyme. See Keshan disease.
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