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January 1, 1998HypertensionOpen Access

Angiotensin II Stimulates Synthesis of Endothelial Nitric Oxide Synthase

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Key result

Acute angiotensin II infusion increased renal NOS III mRNA by 70%, while chronic infusion increased NOS III protein by 90% in rats.

Authors

BHBettye Sue HenningtonTougaloo CollegeHZHuimin ZhangJiangsu UniversityMMM. Todd MillerUniversity of Mississippi Medical Center

Discussion

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Implication

Does not support changes in clinical ANGII management; leaves open NOS III translation from rat models to human hypertension.

Key Points

  • To determine the effects of acute and chronic ANGII on NOS III synthesis in rat kidneys.
  • Performed in rats to assess mRNA and protein synthesis of NOS III after ANGII elevation.
  • Captopril (20 microg/kg/min) was administered intravenously to inhibit ANGII production.
  • Acute infusion of ANGII (8 ng/kg/min) for 110 minutes and chronic infusion (5 ng/kg/min) for 10 days were conducted.
  • Acute ANGII increased renal NOS III mRNA by 70%, but did not affect protein levels.
  • Chronic ANGII infusion increased NOS III protein by 90%, despite no change in mRNA levels.
  • Acute and chronic ANGII affected renal plasma flow and GFR differently, indicating divergent effects.

PICO

P
Population
Rats subjected to acute or chronic angiotensin II infusion to evaluate renal NOS III synthesis.
I
Intervention / Comparator
Angiotensin II (Acute: 8 ng/kg/min; Chronic: 5 ng/kg/min)
O
Primary Outcome
Renal NOS III mRNA and protein synthesis

Cite This Study

Hennington et al. (1998) studied this question. Angiotensin II was evaluated on Renal NOS III mRNA and protein synthesis. Acute angiotensin II infusion increased renal NOS III mRNA by 70%, while chronic infusion increased NOS III protein by 90% in rats.

synapsesocial.com/papers/6a2a173d9b8d83ce413f068bhttps://doi.org/10.1161/01.hyp.31.1.283
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Angiotensin II Activates Endothelial Constitutive Nitric Oxide Synthase via AT1 Receptors.1996 · 77 citations
  2. 2Angiotensin II1994 · 42 citations
  3. 3Renal nitric oxide and angiotensin II interaction in renovascular hypertension.1993 · 91 citations
  4. 4Modulation of angiotensin II-induced vasoconstriction by endothelium-derived relaxing factor in the isolated microperfused rabbit afferent arteriole.1991 · 215 citations
  5. 5Long-term dietary supplementation with L-arginine prevents age-related reduction in renal function1997 · 42 citations