Increased atrial natriuretic peptide (6-33) binding sites in the subfornical organ of water deprived and Brattleboro rats

Journal Article · Mon Sep 01 00:00:00 EDT 1986 · Proc. Soc. Exp. Biol. Med.; (United States)

DOI:https://doi.org/10.3181/00379727-182-4-RC1· OSTI ID:7025455

Saavedra, J M; Israel, A; Correa, F M.A.; Kurihara, M

Binding sites for rat atrial natriuretic eptide (6-33) (ANP) were quantitated in the subfornical organ of chronically dehydrated homozygous Brattleboro rats unable to synthesize vasopressin; heterozygous Brattleboro rats, their controls, Long Evans rats and Long Evans rats after 4 days of water deprivation. Brain sections were incubated in the presence of /sup 125/I-ANP and the results analyzed by autoradiography coupled to computerized microdensitometry and comparison to /sup 125/I-standards. Brattleboro rats and water deprived Long Evans rats presented a higher number of ANP binding sites than their normally hydrated controls. The results suggest a role of ANP binding sites in the subfornical organ in the central regulation of fluid balance and vasopressin secretion.

• Research Organization: National Institute of Mental Health, Bethesda, MD
• OSTI ID: 7025455
• Journal Information: Proc. Soc. Exp. Biol. Med.; (United States), Vol. 182:4
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
BRAIN
AUTORADIOGRAPHY
PEPTIDES
BIOCHEMICAL REACTION KINETICS
DEHYDRATION
HOMEOSTASIS
IODINE 125
RATS
VASOPRESSIN
WATER
ANIMALS
BETA DECAY RADIOISOTOPES
BODY
CENTRAL NERVOUS SYSTEM
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
HORMONES
HYDROGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ISOTOPES
KINETICS
MAMMALS
NERVOUS SYSTEM
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
OXYGEN COMPOUNDS
PEPTIDE HORMONES
PITUITARY HORMONES
PROTEINS
RADIOISOTOPES
REACTION KINETICS
RODENTS
VERTEBRATES
550201* - Biochemistry- Tracer Techniques