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We previously demonstrated that the somatostatinergic system , implicated in neuronal survival control , can be modulated by alpha - tocopherol in the rat dentate gyrus , increasing cyclic adenosine monophosphate response element binding protein phosphorylation .
 Chemical: alpha - tocopherol; Chemical: cyclic adenosine monophosphate
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: alpha - tocopherol; Chemical: cyclic adenosine monophosphate