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February 1, 2001Arteriosclerosis Thrombosis and Vascular BiologyOpen Access

Endothelial NO Synthase Overexpression Inhibits Lesion Formation in Mouse Model of Vascular Remodeling

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Key result

Chronic eNOS overexpression cuts neointimal area ~53% after carotid ligation in mice.

  • P<0.01

Why the study?

Does eNOS overexpression prevent neointimal and medial thickening in a mouse model of vascular remodeling?

Population

Mouse model of vascular remodeling, comparing eNOS-transgenic mice and wild-type mice.

Comparison

Chronic endothelial NO synthase overexpression vs Wild-type mice

Design

Preclinical

Follow-up

4 weeks

Authors

SKSeinosuke KawashimaASKA Pharmaceutical (Japan)TYTomoya YamashitaKobe UniversityMOMasanori OzakiOsaka City University

Discussion

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Member takes

Overview

eNOS overexpression attenuates murine vascular remodeling; hypothesis-generating for NO-based therapies, with no clinical implications yet.

Structured PICO

Does eNOS overexpression prevent neointimal and medial thickening in a mouse model of vascular remodeling?

P
Population
Mouse model of vascular remodeling comparing eNOS-transgenic mice (n=8) to wild-type mice evaluated 4 weeks after common carotid artery ligation.
I
Intervention
Chronic endothelial NO synthase (eNOS) overexpression (eNOS-Tg mice)
C
Comparator
Wild-type mice
O
Outcome
Neointimal and medial areas at 4 weeks after ligationsurrogate

Main Result

Absolute Event Rate: 8000% vs 17200%

p-value: p=<0.01

Chronic eNOS overexpression in the endothelium inhibits neointimal formation and medial thickening, providing evidence for the regulatory role of NO on vascular structure integrity.

Cite This Study

Kawashima et al. (2001) studied Vascular remodeling. eNOS overexpression (eNOS-transgenic mice) vs. Wild-type mice was evaluated on Neointimal area (microm2) (p=<0.01). Chronic eNOS overexpression in a mouse model significantly reduced neointimal area (8000 vs 17,200 microm2, P<0.01) and medial area (18,400 vs 24,300 microm2, P<0.01) 4 weeks after carotid ligation.

synapsesocial.com/papers/6aa4edfa50d1b974a3f2dac4https://doi.org/10.1161/01.atv.21.2.201
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Also Consider

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

  1. 1Direct evidence for the importance of endothelium-derived nitric oxide in vascular remodeling.1998 · 816 citations
  2. 2Hypotension and reduced nitric oxide-elicited vasorelaxation in transgenic mice overexpressing endothelial nitric oxide synthase.1998 · 280 citations
  3. 3L-arginine improves endothelium-dependent vasorelaxation and reduces intimal hyperplasia after balloon angioplasty.1994 · 101 citations
  4. 4Important role of tissue angiotensin-converting enzyme activity in the pathogenesis of coronary vascular and myocardial structural changes induced by long-term blockade of nitric oxide synthesis in rats.1997 · 326 citations
  5. 5Nitric oxide-generating vasodilators and 8-bromo-cyclic guanosine monophosphate inhibit mitogenesis and proliferation of cultured rat vascular smooth muscle cells.1989 · 2,171 citations