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Prostaglandin D2, another renal prostaglandin?
Prostaglandins
|June 1, 1978
Summary
Prostaglandin D2 (PGD2) is synthesized in rabbit kidneys. Administered PGD2 increased renal blood flow, urine output, and electrolyte excretion in dogs without affecting systemic blood pressure.
Area of Science:
- Nephrology
- Endocrinology
- Biochemistry
Background:
- Prostaglandins play crucial roles in renal function.
- Prostaglandin D2 (PGD2) has been identified as a renal prostaglandin.
Purpose of the Study:
- To investigate the biosynthesis and physiological effects of Prostaglandin D2 (PGD2) in the kidney.
Main Methods:
- In vitro incubation of rabbit renal papillae for PGD2 biosynthesis.
- Gas chromatography-mass spectroscopy for prostaglandin quantification.
- In vivo canine model with intra-renal artery infusion of PGD2.
Main Results:
- Rabbit renal papillae biosynthesized PGD2 in vitro.
- PGD2 concentration was 1/6 to 1/10 of PGE2.
- Intra-renal PGD2 infusion increased renal blood flow, urine flow, and electrolyte excretion in a dose-dependent manner.
- Higher PGD2 doses shifted intrarenal blood flow towards juxtamedullary nephrons.
Conclusions:
- Prostaglandin D2 is a biologically active prostaglandin in the kidney.
- PGD2 influences renal hemodynamics and excretory functions.
- PGD2 may play a role in regulating intrarenal blood flow distribution.