| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6261877 | Brain Research Bulletin | 2013 | 4 Pages |
The purpose of the present study was to elucidate the role of protein kinase A and C in the mechanism of capsaicin inhibition on mu-opiate receptors. H89, a protein kinase A inhibitor and BIM (bisindolylmaleimide), a protein kinase C inhibitor were used for this purpose. BIM suspended the inhibition of capsaicin in endomorphin-1 competition binding. The addition of BIM alone had no effect itself on this reaction. H89 however, exerted a strong inhibitory effect on the endomorphin-1 binding. We can conclude that protein kinase C certainly plays a role in the inhibition of capsaicin. The role of protein kinase A in this reaction could not be established, owing to the blocking effect of H89 on the mu-opioid receptors.
⺠Protein kinase C has an important role in interactions of TRPV1 and MOR. ⺠Inhibition of PKC with BIM suspended capsaicin effect on MOR. ⺠BIM itself had no effect on MOR. ⺠H89 an inhibitor of PKA was a strong blocker of MOR itself.
