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Aim
Abnormal upregulation of CYP24 contributes to vitamin D insufficiency and resistance to vitamin D therapy in chronic kidney disease (CKD), because human CYP24 is a key enzyme involved in the inactivation of 1a,25‐dihydroxyvitamin D3 (1a,25(OH)2D3; calcitriol) and 1,25(OH)2D3. There are multiple mechanisms regulating CYP24 in a variety of types of tissues and diseases. An increasing body of evidence...