Prostaglandins and schizophrenia: further discussion of the evidence

Abstract

Synopsis: It has been proposed that schizophrenia is a prostaglandin-deficiency disease and also that it is a disease of prostaglandin excess. New evidence is reviewed which suggests that ‘classic’ schizophrenia is due to a specific deficiency of prostaglandin E₁ while certain toxic and vitamindeficiency psychoses may be due to a broader spectrum of prostaglandin deficiency. There is also good evidence that a particular schizophrenic subgroup, which includes catatonic schizophrenia but may not be confined to it, is associated with an excess of prostaglandins. Part of the explanation may be that prostaglandin E₁ has a ‘bell-shaped’ dose-response curve with high concentrations having effects similar to those of prostaglandin deficiency.