TRANSLATIONAL MODELS OF DRUG
DEVELOPMENT FOR THE TREATMENT OF SCHIZOPHRENIA
Jeffrey A. Lieberman, University of
North Carolina School of Medicine
Although antipsychotic drugs represent an important advance
in the treatment of mental illness, it is painfully apparent that there is much
to be done to meet the unmet needs of patients. Current treatments are not
effective for all patients, do not treat all symptom dimensions of the
illnesses, are not optimal for use as preventative or prophylactic agents and
have unfavorable side effects. Although the advent of atypical
antipsychotic drugs has broadened the range of MOAs of different antipsychotics
there is a tremendous need for further innovation. This calls for new
strategies for drug development and the sue of adjunctive regimens for the
treatment of schizophrenia and related psychotic disorders. This
presentation will review recent data on the limitations of conventional and
atypical drugs. It will also examine the actions of these drugs in novel
preclinical paradigms which suggest the potential relevance of unique mechanisms
of action involving modulation of the glutamatergic system and effects on
neurosteroids. The results have implications for new ways to evaluate the
therapeutic profiles of antipsychotic drugs and strategies for drug development.