Abstract
With immunocytochemistry numerous nerve fibres containing neuropeptide Y (NPY) were found in human molar pulp tissue, often around small blood vessels. Reverse transcriptase-polymerase chain reaction, using specific primers, detected mRNA of the human NPY Y 1 receptor in the human pulp tissue. Thus, both NPY-containing nerve fibres and NPY Y 1 receptor mRNA are present in human tooth pulp, possibly regulating vascular tone and pain perception.
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