1077
These findings suggest that estrogen downregulates alpha2 - but not I1 - receptor - mediated hypotension and highlight a role for the cardiac autonomic control in alpha - methyldopa - estrogen interaction .
 estrogen, hypotension, alpha - methyldopa, estrogen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 estrogen, hypotension, alpha - methyldopa, estrogen