Antidiuretic action of prolactin in the rat with diabetes insipidus

Myron Miller, Marcia Van Gemert

Research output: Contribution to journalArticle

Abstract

Rats with hereditary hypothalamic diabetes insipidus, devoid of endogenous ADH, exhibited a prompt antidiuresis when injected subcutaneously or intraarterially with ovine prolactin. The antidiuresis was accompanied by a decrease in free water clearance and an increase in urine osmolality without a change in osmolal clearance or creatinine excretion. Measurement of PAH and inulin clearances indicated that prolactin had no effect on renal plasma flow or glomerular filtration rate. Prolactin injection caused a transient decrease in urinary sodium excretion, but proximal tubular sodium reabsorption, estimated by Iissamine green transit time, was unaffected. The antidiuretic effect of prolactin could not be attributed to ADH contamination of the ovine prolactin preparation. Kidney cyclic AMP content was increased significantly 5 min after injection of prolactin. Thus, prolactin has an antidiuretic effect similar to that which occurs as a result of ADH action on the kidney and does not require either the release or the presence of ADH in order to cause the antidiuresis. Further, the impaired water excretion cannot be attributed to an increase in proximal tubular sodium reabsorption or to alteration of renal hemodynamics. It is suggested that prolactin has a direct ADH-like action on the kidney resulting in antidiuresis.

Original languageEnglish (US)
Pages (from-to)319-332
Number of pages14
JournalHormone Research in Paediatrics
Volume7
Issue number6
DOIs
StatePublished - 1976
Externally publishedYes

Fingerprint

Diabetes Insipidus
Prolactin
Antidiuretic Agents
Kidney
Sodium
Sheep
Renal Plasma Flow
Injections
Inulin
Water
Glomerular Filtration Rate
Cyclic AMP
Osmolar Concentration
Creatinine
Hemodynamics
Urine

Keywords

  • ADH
  • Antidiuresis
  • Cyclic AMP
  • Diabetes insipidus
  • Prolactin
  • Sodium reabsorption
  • Water retention

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism
  • Pediatrics, Perinatology, and Child Health

Cite this

Antidiuretic action of prolactin in the rat with diabetes insipidus. / Miller, Myron; Van Gemert, Marcia.

In: Hormone Research in Paediatrics, Vol. 7, No. 6, 1976, p. 319-332.

Research output: Contribution to journalArticle

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