Grassi E, Mortilla M, Amaducci L, Pallanti S, Pazzagli A, Galassi F, Guarnieri B M, Petruzzi C, Bolino F, Ortenzi L, Nistico R, De Cataldo S, Rossi A, Sorbi S
Dipartimento di Scienze Neurologiche e Psichiatriche, Università di Firenze, Italy.
Neurosci Lett. 1996 Mar 15;206(2-3):196-8. doi: 10.1016/s0304-3940(96)12463-0.
Our purpose was to test the dopamine D2 receptor gene (DRD2), the tyrosine hydroxylase (TH) gene and the monoamino oxydase A (MAO-A) gene for linkage to schizophrenia and bipolar disorders. We have analyzed seven Italian families with schizophrenia and four families with bipolar disorders for a total of 68 individuals; 32 individuals were affected. Diagnoses were made using the structured clinical interview Schedule for Affective Disorders and Schizophrenia, Lifetime version (SADS-L). The results of our study provide no evidence of linkage between alleles at D2 dopamine receptor loci and schizophrenia or bipolar disorders. The markers TH gene and MAO-A gene give slightly positive or negative results suggesting the utility of further analysis on more informative families.
