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The earlier responses , at day 3 after injection , included hyperphosphorylation of intermediate filament ( IF ) proteins from astrocyte ( glial fibrillary acidic protein - GFAP - and vimentin ) and neuron ( low - , medium - and high molecular weight neurofilament subunits : NF - L , NF - M and NF - H ) ; increased mitogen - activated protein kinase ( MAPK ) ( Erk and p38MAPK ) and cAMP - dependent protein kinase ( PKA ) activities .
 Chemical: cAMP
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: cAMP