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January 1, 1999The Japanese Journal of PharmacologyOpen Access

Mechanism of Structural Remodelling of the Rat Aorta During Long-Term NG-Nitro-L-arginine Methyl Ester Treatment

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Key result

Four-week treatment with L-NAME in male Wistar rats induced aortic remodelling that was associated with nitric oxide deficiency rather than L-NAME-induced hypertension.

Why the study?

Does L-NAME treatment induce structural remodelling of the rat aorta via NO deficiency or hypertension?

Population

Male Wistar rats

Comparison

NG-nitro-L-arginine methyl ester 20 mg/kg per… vs Control group

Design

Preclinical

Follow-up

four weeks

Authors

IBIveta BernátováOPOľga PecháňováFKFrantisek Kristek

Discussion

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Member takes

Overview

Implicates nitric oxide deficiency over hypertension in L-NAME aortic remodeling; hypothesis-generating for human vascular mechanisms.

Structured PICO

Does L-NAME treatment induce structural remodelling of the rat aorta via NO deficiency or hypertension?

P
Population
Male Wistar rats treated with L-NAME for four weeks to study the mechanism of aortic structural remodelling.
I
Intervention
NG-nitro-L-arginine methyl ester (L-NAME) 20 mg/kg per day or 40 mg/kg per day for four weeks
C
Comparator
Control group
O
Outcome
Metabolic and structural remodelling of the rat aorta (including NO synthase activity, proteosynthesis, nuclear DNA concentration, cGMP, cAMP, diameter, and wall thickness-to-diameter ratio)surrogate

Aortic remodelling in L-NAME-treated rats appears to be driven primarily by nitric oxide deficiency rather than the induced hypertension.

Cite This Study

Bernátová et al. (1999) studied L-NAME-induced hypertension and aortic remodelling. L-NAME (NG-nitro-L-arginine methyl ester) vs. Control was evaluated on Structural and metabolic remodelling of the rat aorta. Four-week treatment with L-NAME in male Wistar rats induced aortic remodelling that was associated with nitric oxide deficiency rather than L-NAME-induced hypertension.

synapsesocial.com/papers/6ab74aa6dcfe1d0672a6f07fhttps://doi.org/10.1016/s0021-5198(19)30815-7
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Also Consider

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

  1. 1Mechanism of Structural Remodelling of the Rat Aorta During Long-Term <I>N</I><SUP>G</SUP>-Nitro-L-arginine Methyl Ester Treatment1999 · 37 citations
  2. 2Chronic inhibition of NO synthesis per se promotes structural intimal remodeling of the rat aorta2001 · 32 citations
  3. 3Chronic-low-dose L-NAME treatment increases nitric oxide production and vasorelaxation in normotensive rats2007 · 23 citations
  4. 4Long-Term Vascular Effects of Nω-Nitro-L-Arginine Methyl Ester are Not Solely Mediated by Inhibition of Endothelial Nitric Oxide Synthesis in the Rat Mesenteric Artery1999 · 18 citations
  5. 5NITRIC OXIDE SYNTHASE INHIBITION WITH Nω‐NITRO‐L‐ ARGININE METHYL ESTER AFFECTS BLOOD PRESSURE AND CARDIOVASCULAR STRUCTURE IN THE GENETICALLY HYPERTENSIVE RAT STRAIN1997 · 13 citations