title: Brain amines in glucocorticoid-induced hypertension in the rat.
abstract: A two week administration of the glucocorticoid betametasone to male Wistar rats produced a mild hypertensive state. The brain of these rats showed some significant changes in amine and metabolite content with respect to normotensive controls. Epinephrine and metanephrine were increased in the rostral ventrolateral medulla and in the preoptic area. Epinephrine also increased in the septal area. Normetanephrine decreased in the rostral ventrolateral medulla. Dopamine and homovanillic acid increased in septal and preoptic areas. Dopamine alone increased in rostral ventrolateral medulla. Serotonin and 5-hydroxyindole-3-acetic acid increased in the septal area and dorsal medulla. These changes suggest significant alterations in the aminergic activity of the brain circuitry known to regulate cardiovascular functions; the changes may play a basic role in the development and maintenance of glucocorticoid-induced hypertension.
authors.affiliation: Sección Sustancias Vasoactivas, Facultad de Medicina, Universidad de Buenos Aires, Argentina.
authors.forename: M
authors.initials: M
authors.lastname: Fanelli
authors.forename: V E
authors.initials: VE
authors.lastname: Nahmod
authors.forename: N
authors.initials: N
authors.lastname: Torres
authors.forename: D
authors.initials: D
authors.lastname: Santajuliana
authors.forename: S I
authors.initials: SI
authors.lastname: García
authors.forename: S
authors.initials: S
authors.lastname: Finkielman
authors.forename: C J
authors.initials: CJ
authors.lastname: Pirola
mesh_terms: D000818:Animals; D001623:Betamethasone; D001679:Biogenic Amines / Q000378:metabolism*; D001923:Brain Chemistry / Q000502:physiology*; D006973:Hypertension / Q000139:chemically induced / Q000378:metabolism*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D001679:Biogenic Amines; D001623:Betamethasone