1718
Changes of calcitriol receptors in primary and secondary hyperparathyroidism could magnify the consequences of disturbances in serum concentration of calcitriol itself and might play an important role in the development of secondary hyperparathyroidism in uremia .
 ( protein: calcitriol receptors, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: calcitriol receptors, None) 