What is the clinical evidence from this study?

Study design: RCT. Population: Established atherosclerosis. Intervention: Oral prednisone and bare-metal stent vs. Bare-metal stent and placebo. Primary outcome: percent stenosis (p=0.009).

What question did this study set out to answer?

To evaluate the efficacy of systemic oral prednisone combined with bare-metal stents on neointimal proliferation and vascular healing compared with bare-metal stents alone or paclitaxel-eluting stents in atherosclerotic rabbits.

September 14, 2026Journal of the American College of CardiologyOpen Access

Effects of Oral Prednisone After Stenting in a Rabbit Model of Established Atherosclerosis

Q: What are the key findings of this study?

Oral prednisone with a bare-metal stent reduced percent stenosis by 30% (p=0.009) and neointimal thickness by 66% (p<0.001) compared to control, with less delayed healing than Taxus stents.

View Full Paper

Ask AI

Bookmark

Key result

Oral prednisone with BMS cuts percent stenosis ~30% vs control with improved healing.

P=0.009

Why the study?

Does oral prednisone combined with a bare-metal stent reduce neointimal formation and improve vessel healing compared to a paclitaxel-eluting stent or bare-metal stent alone in an atherosclerotic rabbit model?

Key Points

To evaluate the efficacy of systemic oral prednisone combined with bare-metal stents on neointimal proliferation and vascular healing compared with bare-metal stents alone or paclitaxel-eluting stents in atherosclerotic rabbits.
New Zealand White rabbits fed an atherogenic diet underwent bilateral iliac artery injury followed by stent placement.
Animals were randomized to receive paclitaxel-eluting stents (Taxus), bare-metal stents (BMS) with placebo, or BMS with oral prednisone (2.1 mg/kg/day for 7 days, 1.4 mg/kg/day for 14 days, and 0.7 mg/kg/day for 21 days).
Stented arterial segments were harvested at 42 days for light microscopy, immunohistochemistry, and organoid culture analysis.
Prednisone-treated rabbits exhibited a 30% reduction in percent stenosis (p = 0.009), a 35% decrease in neointimal area (p < 0.003), and a 66% decrement in neointimal thickness (p < 0.001) compared with controls.
Paclitaxel-eluting stents achieved reductions in stenosis (-34%), area (-39%), and thickness (-83%), but showed significantly more inflammatory cells, increased fibrin deposition, and impaired endothelialization compared to prednisone and control bare-metal stent groups.

Study Design

Type

RCT

Randomization

Randomized

Structured PICO

Population

Atherosclerotic New Zealand White rabbits fed an atherogenic diet undergoing bilateral iliac artery injury and stent implantation, followed for 42 days.

Intervention

Bare-metal stent (BMS) and oral prednisone (2.1 mg/kg/day for the first 7 days, followed by 1.4 mg/kg/day for 14 days and 0.7 mg/kg/day for 21 days)

Comparator

Paclitaxel-eluting stent (Taxus) or BMS and placebo

Outcome

Neointimal inhibition and vessel healing (percent stenosis, neointimal area, neointimal thickness) at 42 dayssurrogate

Main Result

p-value: p=0.009

Discussion

No takes yet. Share an insight, caveat, or question.

Implication

Systemic prednisone combined with a bare-metal stent reduces neointimal formation to a similar extent as a paclitaxel-eluting stent, but without the delayed healing and increased inflammation seen with the drug-eluting stent.

Cite This Study

Ribichini et al. (2007) conducted an RCT in Established atherosclerosis. Oral prednisone and bare-metal stent vs. Bare-metal stent and placebo was evaluated on percent stenosis (p=0.009). Oral prednisone with a bare-metal stent reduced percent stenosis by 30% (p=0.009) and neointimal thickness by 66% (p<0.001) compared to control, with less delayed healing than Taxus stents.

synapsesocial.com/papers/6aa766f20d2823f8ea00b46d https://doi.org/10.1016/j.jacc.2007.03.031

View Full Paper

Ask AI

Bookmark

Effects of Oral Prednisone After Stenting in a Rabbit Model of Established Atherosclerosis

Key Points

Study Design

Structured PICO

Main Result

Discussion

Implication

Cite This Study

Effects of Oral Prednisone After Stenting in a Rabbit Model of Established Atherosclerosis

Key Points

Study Design

Structured PICO

Main Result

Discussion

Implication

Cite This Study

Also Consider

Also Consider