Faculty Collaboration Database

Dissociation of hyperreninemia and renal prostaglandin synthesis in the adrenalectomized rat. Prostaglandins 1986 Jan;31(1):143-55

Date

01/01/1986

Pubmed ID

3513258

DOI

10.1016/0090-6980(86)90232-7

Scopus ID

2-s2.0-0022619526 (requires institutional sign-in at Scopus site)   2 Citations

Abstract

The aim of this study was to determine whether hyperreninemia in the adrenalectomized (ADX) rat is dependent on renal prostaglandin synthesis, as has been suggested for two other hyperreninemic conditions, Bartter's syndrome and chronic liver disease. Plasma renin concentration (PRC) in anesthetized, ADX rats was significantly increased (delta +480%; p less than 0.001) compared to sham-operated controls. In vivo, indomethacin (10 mg/kg i.v.) significantly reduced PRC of anesthetized, ADX rats after both 45 min (delta -34%; p less than 0.05) and 90 min (delta -47%; p less than 0.05). In vitro renin release from renal cortical slices of ADX rats was also significantly greater (delta +130%; p less than 0.05) than from sham-operated control cortical slices. Renin release from cortical slices of ADX rats given dexamethasone (10 micrograms/kg/day) for 4 days prior to sacrifice did not differ from sham-operated control values. Prostaglandin E2 (PGE2) release from cortical slices of ADX rats did not differ significantly from controls. However, PGE2 synthesis in glomeruli microdissected from ADX rats was significantly increased (delta +110%; p less than 0.001) compared to controls. PGE2 synthesis in glomeruli of dexamethasone-treated ADX rats remained significantly elevated compared to controls. Ibuprofen (10(-6) M) decreased PGE2 synthesis in cortical slices by 80%. However, prostaglandin synthesis inhibition had no effect on renin release from either ADX or control renal cortical slices. These results suggest that despite increased glomerular synthesis, prostaglandins do not directly influence renin release in the ADX rat.

Author List

Boucher LD, Kotchen TA, Jackson BA

MESH terms used to index this publication - Major topics in bold

Adrenalectomy
Animals
Corticosterone
Dexamethasone
Dinoprostone
In Vitro Techniques
Indomethacin
Kidney Cortex
Kidney Glomerulus
Kinetics
Male
Prostaglandins
Prostaglandins E
Rats
Rats, Inbred Strains
Renin