Angiotensin II receptors on human fetal adrenal cells

William E. Rainey, Ian M. Bird, J. Ian Mason, Bruce R. Carr

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

OBJECTIVE: Our objective was to determine if angiotensin II receptors are present on adrenal cells isolated from the human fetal zone and neocortex and to investigate if angiotensin II affects steroid production by these cells. STUDY DESIGN: Primary cultures of both fetal zone and neocortex cells were prepared from fetal adrenal glands. Experiments were conducted to examine the binding of radiolabeled angiotensin II, angiotensin II activation of phospholipase C, and angiotensin II effects on steroidogenesis. RESULTS: The majority of angiotensin II binding sites were of the type 1 subtype, as determined by displacement of radiolabeled angiotensin with specific receptor antagonists. Angiotensin II caused an increase in tritiated inositol phosphate accumulation in both neocortex and fetal zone cells. This increase could be blocked by type 1 angiotensin II receptor antagonists. Angiotensin II stimulated the production of cortisol, dehydroepiandrosterone, and dehydroepiandrosterone sulfate production during treatment for 2 days. The stimulation by angiotensin II, however, was substantially less than that seen in response to corticotropin treatment. CONCLUSIONS: The human fetal adrenal gland contains type 1 angiotensin II receptors early in gestation. The number of these receptors, albeit low, is sufficient to activate inositol phosphate production and steroidogenesis.

Original languageEnglish (US)
Pages (from-to)1679-1685
Number of pages7
JournalAmerican Journal of Obstetrics and Gynecology
Volume167
Issue number6
DOIs
StatePublished - 1992

Fingerprint

Angiotensin Receptors
Angiotensin II
Neocortex
Inositol Phosphates
Adrenal Glands
Angiotensin II Type 1 Receptor Blockers
Angiotensin Type 1 Receptor
Dehydroepiandrosterone Sulfate
Dehydroepiandrosterone
Angiotensins
Type C Phospholipases
Adrenocorticotropic Hormone
Hydrocortisone
Steroids
Binding Sites
Pregnancy

Keywords

  • angiotensin II
  • AT
  • Human fetal adrenal
  • receptor
  • steroid production

ASJC Scopus subject areas

  • Medicine(all)
  • Obstetrics and Gynecology

Cite this

Angiotensin II receptors on human fetal adrenal cells. / Rainey, William E.; Bird, Ian M.; Ian Mason, J.; Carr, Bruce R.

In: American Journal of Obstetrics and Gynecology, Vol. 167, No. 6, 1992, p. 1679-1685.

Research output: Contribution to journalArticle

Rainey, William E. ; Bird, Ian M. ; Ian Mason, J. ; Carr, Bruce R. / Angiotensin II receptors on human fetal adrenal cells. In: American Journal of Obstetrics and Gynecology. 1992 ; Vol. 167, No. 6. pp. 1679-1685.
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