What question did this study set out to answer?

This research investigates the impact of local endothelial nitric oxide synthase gene transfer on restenosis after balloon angioplasty.

July 9, 2026Circulation

Local Adenovirus-Mediated Transfer of Human Endothelial Nitric Oxide Synthase Reduces Luminal Narrowing After Coronary Angioplasty in Pigs

Q: What is the clinical evidence from this study?

Population: Restenosis after coronary angioplasty (n=25). Intervention: Adenovirus-mediated NOS gene transfer (AdCMVceNOS) vs. Adenovirus with no cDNA (AdRR5). Primary outcome: Percent stenosis (p=0.006).

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Key result

Local NOS gene transfer reduces post-angioplasty coronary stenosis to 53% vs 75% in pigs.

P=0.006
n=25

Why the study?

Does local adenovirus-mediated NOS gene transfer reduce luminal narrowing after coronary angioplasty in pigs?

Key Points

This research investigates the impact of local endothelial nitric oxide synthase gene transfer on restenosis after balloon angioplasty.
Performed angioplasty on 25 pigs of the left anterior descending coronary artery.
Injected adenovirus carrying NOS cDNA or control adenovirus intramuscularly after angioplasty.
Assessed restenosis metrics and gene transfer efficiency after 28 days.
Neointimal area reduced in AdCMVceNOS pigs (0.59±0.14 mm) compared to AdRR5 pigs (0.80±0.19 mm, P=0.02).
Maximal neointimal thickness was lower in the AdCMVceNOS group (0.75±0.21 mm) versus control (1.04±0.25 mm, P=0.019).
Lumen area was significantly larger in AdCMVceNOS pigs (0.70±0.35 mm²) compared to AdRR5 pigs (0.32±0.18 mm², P=0.007).

Structured PICO

Does local adenovirus-mediated NOS gene transfer reduce luminal narrowing after coronary angioplasty in pigs?

Population

25 pigs undergoing left anterior descending coronary artery experimental balloon angioplasty, evaluated at 28 days.

Intervention

Intramural injection of adenovirus (1.5 x 10^9 pfu) carrying NOS cDNA (AdCMVceNOS) via the Infiltrator

Comparator

Intramural injection of adenovirus carrying no cDNA (AdRR5)

Outcome

Indices of restenosis evaluated by computerized planimetry on coronary artery sections prepared 28 days after angioplasty (including ratio of neointimal area to internal elastic lamina fracture length, maximal neointimal thickness, percent stenosis, and lumen area)surrogate

Main Result

Absolute Event Rate: 53% vs 75%

p-value: p=0.006

Discussion

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Implication

Local adenovirus-mediated NOS gene transfer restores NO production and significantly reduces luminal narrowing after balloon angioplasty in a porcine model.

Cite This Study

Varenne et al. (1998) studied Restenosis after coronary angioplasty (n=25). Adenovirus-mediated NOS gene transfer (AdCMVceNOS) vs. Adenovirus with no cDNA (AdRR5) was evaluated on Percent stenosis (p=0.006). Local adenovirus-mediated NOS gene transfer significantly reduced percent stenosis compared to control (53% vs 75%, P=0.006) 28 days after coronary angioplasty in pigs.

synapsesocial.com/papers/6a4f13322dbc4344f5ff7ac0 https://doi.org/10.1161/01.cir.98.9.919

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Implication

Local adenovirus-mediated NOS gene transfer restores NO production and significantly reduces luminal narrowing after balloon angioplasty in a porcine model.

Local Adenovirus-Mediated Transfer of Human Endothelial Nitric Oxide Synthase Reduces Luminal Narrowing After Coronary Angioplasty in Pigs

Key Points

Structured PICO

Main Result

Discussion

Implication

Cite This Study

Local Adenovirus-Mediated Transfer of Human Endothelial Nitric Oxide Synthase Reduces Luminal Narrowing After Coronary Angioplasty in Pigs

Key Points

Structured PICO

Main Result

Discussion

Implication

Cite This Study

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