3360
Neuroprotection was attenuated by pertussis toxin , and inhibited by the selective type - 1 S1PR ( S1P1R ) antagonist , W146 , and by inhibitors of the mitogen associated protein kinase ( MAPK ) and the phosphatidylinositol - 3 - kinase ( PtdIns - 3 - K ) pathways .
 Chemical: W146; Chemical: phosphatidylinositol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: W146; Chemical: phosphatidylinositol