PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19169968-5 2008 Since both vasopressin and oestrogen have been reported to inhibit ion fluxes essential for the adaptation of the brain to the lowering of serum sodium concentration, we sought to study the effect of acute and chronic hyponatraemia or hyponatraemia associated with vasopressin on brain morphology in male and female rats. Sodium 145-151 arginine vasopressin Rattus norvegicus 11-22