5706
The mineralocorticoid aldosterone exerted a significant decrease in LPS -induced monocyte IL-1ra secretion in vitro, which was blocked by coincubation with spironolactone .
 IL-1ra
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 IL-1ra