We investigated a peripheral serotonergic marker, i.e. platelet tritia
ted imipramine (H-3-IMI) binding sites, which are part of the 5-HT tra
nsporter complex similar to that present in the brain, in 20 patients
affected by coeliac disease (CD), as compared with 20 healthy controls
. Platelet membranes and H-3-IMI binding were carried out according to
a standardized protocol. The results showed that coeliac patients had
significantly lower H-3-IMI binding sites than controls. This finding
would suggest the presence of a dysfunction at the level of the 5-HT
transporter that might underline the psychic disturbances frequently o
bserved in coeliac patients.