http://www.nature.com/nature/journal/v297/n5863/abs/297229a0.html
Differential release of serotonin and histamine from mast cells
We now report that the tricyclic antidepressant drug amitriptyline (Elavil) inhibits histamine release from stimulated mast cells while permitting the release of serotonin.
And
http://www.ncbi.nlm.nih.gov/pubmed/18234316
Serotonin and histamine are stored in the same compartment as serglycin proteoglycan. Here we addressed the possibility that serglycin may be involved in their storage and/or release.
Differential release of serotonin and histamine from mast cells
We now report that the tricyclic antidepressant drug amitriptyline (Elavil) inhibits histamine release from stimulated mast cells while permitting the release of serotonin.
And
http://www.ncbi.nlm.nih.gov/pubmed/18234316
Serotonin and histamine are stored in the same compartment as serglycin proteoglycan. Here we addressed the possibility that serglycin may be involved in their storage and/or release.