Publish in this journal
Journal Information
Visits
Not available
Vol. 69. Issue 2.
Pages 109-116 (February 2016)
Original article
DOI: 10.1016/j.rec.2015.07.027
Full text access
Impact of the Everolimus-eluting Bioresorbable Scaffold in Coronary Atherosclerosis
Efecto del armazón bioabsorbible liberador de everolimus en la aterosclerosis coronaria
Visits
...
Carlos M. Camposa,b,c, Hector M. Garcia-Garciaa,
Corresponding author
hect2701@gmail.com

Corresponding author: Department of Cardiology, Erasmus University Medical Centre, z120 Dr Molerwaterplein 40, 3015 GD Rotterdam, The Netherlands.
, Takashi Muramatsua,d, Pedro de Araujo Gonçalvese,f,g, Yoshinobu Onumaa, Dariusz Dudekh, Leif Thueseni, Mark W.I. Websterj, Pieter Kitslaark,l, Susan Veldhofm, Johan H.C. Reiberk,l, Koen Niemana,n, John A. Ormistonj, Patrick W. Serruyso
a Department of Cardiology, Erasmus University Medical Centre, Thoraxcenter, Rotterdam, The Netherlands
b Heart Institute (InCor), University of São Paulo Medical School, Sao Paulo, Brazil
c Department of Interventional Cardiology, Hospital Israelita Albert Einstein, Sao Paulo, Brazil
d Department of Cardiology, Fujita Health University Hospital, Toyoake, Japan
e Cardiology Department, Hospital de Santa Cruz, CHLO, Lisbon, Portugal
f Hospital da Luz, Cardiovascular Center, ESS, Lisbon, Portugal
g CEDOC, Chronic Diseases Research Center, FCM-NOVA, Lisbon, Portugal
h Jagiellonian University, Krakow, Poland
i Department of Cardiology, Aarhus University Hospital, Skejby, Denmark
j Auckland City Hospital, Auckland, New Zealand
k Medis Medical Imaging Systems, B.V., Leiden, The Netherlands
l Division of Image Processing, Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands
m Abbott Vascular, Diegem, Belgium
n Department of Radiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, the Netherlands
o International Centre for Circulatory Health, NHLI, Imperial College London, London, United Kingdom
Related content
This item has received
...
Visits
(Daily data update)
Article information
Abstract
Full Text
Bibliography
Download PDF
Statistics
Figures (4)
Show moreShow less
Tables (2)
Table 1. Baseline Clinical and Angiographic Characteristics (n = 18)
Table 2. Multisclice Computed Tomography Intravascular Ultrasound-like Analysis Results
Show moreShow less
Additional material (1)
Abstract
Introduction and objectives

The Absorb bioresorbable vascular scaffold has been shown to decrease total plaque areas in the treated segment. However, it is unknown whether plaque size is modified in scaffolded segments only or whether the modification extends to other coronary segments.

Methods

Absorb Cohort A is a single-arm, prospective study, with safety and imaging endpoints, in which 30 patients underwent percutaneous coronary intervention with the first generation Absorb bioresorbable vascular scaffold. Noninvasive multislice computed tomography imaging was performed in 18 patients at 18 months and 5 years of follow-up. The present study was an intrapatient comparison of matched segments (normalized by the segment length) of the scaffolded region with nonintervened segments for lumen volume, vessel volume, plaque volume, plaque burden, and percent change in plaque atheroma volume.

Results

All 18 scaffolded segments could be analyzed. In the nonintervened segments, 1 of 72 segments had a motion artifact and was excluded. Serial comparison showed that the scaffolded segments showed no significant change in the mean plaque burden, total atheroma volume, total lumen volume, or vessel volume between 18 months and 5 years. Conversely, the untreated segments showed a significant increase in plaque burden (2.7 ± 6.5%; P < .01) and normalized plaque volumes (8.0 ± 22.8mm3; P < .01). This resulted in a significant difference in plaque burden between scaffolded and nonintervened segments (P = .03).

Conclusions

In this small series, the Absorb bioresorbable vascular scaffold showed the potential to provide an additional benefit to pharmacological therapy in locally reducing progression of percent plaque burden. These findings need to be confirmed in larger studies.

Keywords:
Absorb
Atherosclerosis
Computed tomography coronary angiography
Coronary plaque
Disease progression
Abbreviations:
BVS
CT
MSCT
TAV
Resumen
Introducción y objetivos

Se ha demostrado que el armazón vascular bioabsorbible Absorb produce una disminución del área total de las placas en el segmento tratado. Sin embargo, no se sabe si el tamaño de la placa se modifica tan solo en los segmentos tratados con armazones o si la modificación se extiende también a otros segmentos coronarios.

Métodos

El Absorb Cohort A es un estudio prospectivo de un solo grupo, en el que se evalúan variables de valoración de seguridad y de resultados en exploraciones de imagen en 30 pacientes tratados mediante intervención coronaria percutánea con el armazón vascular bioabsorbible Absorb de primera generación. Se utilizaron exploraciones de tomografía computarizada multicorte no invasivas de 18 pacientes a los 18 meses y a los 5 años de seguimiento. El presente estudio es una comparación intraindividual de segmentos de características comparables (normalizados respecto a la longitud del segmento) de la región tratada con armazones frente a segmentos no tratados, en la que se evaluó el volumen de la luz vascular, el volumen del vaso, el volumen de las placas, la carga de placa y el cambio porcentual en el volumen de ateroma de las placas.

Resultados

Se pudo analizar los 18 segmentos tratados con armazones. De los segmentos a los que no se aplicó la intervención, 1 de un total de 72 presentó un artefacto de movimiento y fue excluido. La comparación de exploraciones secuenciales puso de manifiesto que los segmentos tratados con armazones no presentaban un cambio significativo de la carga media de placas, el volumen total de ateroma, el volumen total de la luz o el volumen del vaso entre los 18 meses y los 5 años. En cambio, los segmentos no tratados mostraban un aumento significativo de la carga de placa (2,7 ± 6,5%; p < 0,01) y los volúmenes de placas normalizados (8,0 ± 22,8mm3; p < 0,01). Esto dio lugar a una diferencia significativa en la carga de placa entre los segmentos tratados con armazones y los no tratados (p = 0,03).

Conclusiones

En esta pequeña serie, el armazón vascular bioabsorbible Absorb mostró potencial de aportar un beneficio adicional al del tratamiento farmacológico en cuanto a la reducción local de la progresión en el porcentaje de carga de placa. Se deberá confirmar estos resultados en estudios más amplios.

Palabras clave:
Absorb
Aterosclerosis
Angiografía coronaria con tomografía computarizada
Placa coronaria
Progresión de la enfermedad
Full Text
INTRODUCTION

The clinical introduction of bioresorbable vascular scaffolds (BVS) was the fourth revolution in interventional cardiology. These devices have the unique ability to provide a temporary scaffold, which is necessary to maintain the patency of the vessel after intervention and they gradually permit the restoration of vascular physiology and integrity.1–3 Among the potential advantages of BVS, the reduction in atherosclerotic plaque and late lumen enlargement in the treated regions3–5 may represent a paradigm shift in the treatment of coronary artery disease.

Pharmacological therapy has shown that, depending on the patient's clinical profile, it is possible to promote plaque regression.6–8 Therefore, plaque regression in patients treated with BVS may not be related to the device itself but rather to the effect of pharmacological therapy in a vessel that is free from its internal cage.

The aim of the present study was to perform a within-patient comparison of the natural history of coronary atherosclerosis between segments treated with the poly-L-lactide-acid everolimus-eluting BVS (Absorb BVS first generation, Abbott Vascular; Santa Clara, California, United States) and nonintervened segments in the Absorb Cohort A trial assessed by multislice computed tomography (MSCT).

METHODSStudy Population

The design of the Absorb Cohort A trial has been previously described.9 Briefly, it is a single-arm, prospective, open-label study, with safety and imaging endpoints. A total of 30 patients were enrolled at 4 participating sites between March and July 2006. Patients were older than 18 years with a diagnosis of stable, unstable, or silent ischemia. All treated lesions (diameter stenosis > 50%) were single, de novo in a native coronary artery of 3.0mm in diameter, and suitable for the 12- or 18-mm scaffold. Major exclusion criteria were patients presenting with an acute myocardial infarction, unstable arrhythmias, or a left ventricular ejection fraction < 30%, restenotic lesions, lesions located in the left main coronary artery, lesions involving a side branch > 2mm in diameter, and the presence of thrombus or another clinically significant stenosis in the target vessel. The protocol was approved by the ethics committees of the participating institutions, and the enrolled patients gave written informed consent before inclusion. Clinical endpoints were assessed at 30 days, 6 and 9 months, and 1, 2, 3, 4, and 5 years. Noninvasive MSCT imaging studies were done at 18 months and at 5 years of follow-up.

Study Device

The study device has been described elsewhere.9 Briefly, the polymeric device consists of a backbone of poly-L-lactide-acid coated with poly-D-L-lactide acid that contains and controls the release of the antiproliferative drug everolimus. Absorb BVS first generation has a crossing profile of 1.4mm in circumferential hoops of poly-L-lactide-acid with struts 150μm thick either directly joined or linked by straight bridges. Both ends of the scaffold have 2 adjacent radio-opaque metal markers. The doses of everolimus on the Absorb BVS 1.0 are 98μg for a 12mm scaffold and 153μg for the 18mm scaffold.

Multislice Computed Tomography Angiography

The computed tomography (CT) scanners used were 64-slice CT (Brilliance 64, Philips; Best, The Netherlands; and CVi, GE Healthcare; Milwaukee, Wisconsin, United States), 256-slice CT (iCT, Philips), and 320-slice CT.

Computed tomography (Aquilion One, Toshiba; Nasu, Japan), 64-slice dualsource CT (Definition, Siemens AG; Forchheim, Germany), and 128-slice dual-source CT (Definition Flash, Siemens) were used. Standard acquisition techniques were used, which included beta-blockers in patients with a fast heart rate, tube settings depending on patient size (80kV to 140kV), and axial scan protocols for patients with lower heart rates to reduce radiation doses, all at the discretion of the individual sites. Images were reconstructed using thin slices (0.5mm to 0.67mm) and medium smooth reconstruction filters, including 1 or more phases of cardiac cycle, depending on the scan protocol.

Multislice Computed Tomography Analysis

The MSCT analysis followed a previously established methodology.3,10–12 All datasets were transferred to an offline workstation for analysis using semi-automated plaque analysis software (QAngioCT Research Edition version 2.1, Medis Medical Imaging Systems B.V.; Leiden, The Netherlands). The assessment of the inner lumen and outer vessel volumes was performed following a stepwise approach. First, a centreline originating from the ostium was automatically extracted. Straightened multiplanar reformatted images were generated, and the lumen and vessel borders were detected longitudinally in 4 different vessel views by the software. Cross-sectional images of these longitudinal contours were examined at 0.5-mm intervals and, if necessary, adjusted by an experienced observer. The settings for window level and width were fixed at 740 HU and 220 HU, respectively. Gradient magnitude images, which display the degree of CT attenuation change, were used to facilitate the detection of lumen and vessel wall borders.

Only the major epicardial vessels were considered for analysis using the modified 17-segment American Heart Association model for coronary segment classification (proximal and mid segments of the right, left circumflex and left descending anterior coronary arteries).13 The scaffolded regions were delimited by the presence of the radiopaque markers. If the metallic stents overlapped (n = 3), the scaffolded regions were assessed up to the regions without stent interference. The present study used the intra-patient nonintervened native coronary vessels as comparator for the scaffolded regions by assessing the first 2 proximal segments, divided in proximal or distal according to established anatomical references (Figure 1).13

Figure 1.

Flowchart of the 5-year serial multislice computed tomography study. Scaffolded segments (in red) were matched at the 18-month and 5-year follow-up for serial comparison. Nonintervened segments delimited by anatomical markers (in blue) were matched at the 18-month and 5-year follow-up for serial comparison. One nonintervened segment had a motion artifact at 18 months, hindering the serial comparison and was excluded. MSCT, multislice computed tomography.

(0.23MB).
Multisclice Computed Tomography Study Imaging Endpoints

Normalization for segment length provided equal weighting of each patient in the calculation of atheroma volume and also for varying segment length between the 2 scans.10,14 The following intravascular ultrasound-like parameters were calculated for the nonintervened and scaffolded segments after normalization:

Statistical Analysis

Continuous variables are presented as mean ± standard deviation and median [interquartile range, as indicated. Categorical variables are presented as counts and percentages. Continuous variables between the 2 different time points were compared by the paired samples t test. A P value < .05 was considered significant. A K-mean cluster analysis was run using the segment name as a categorical variable and the change in percent atheroma volume as continuous variable (supplementary material). Statistical analyses were performed with use of SPSS version 22.0 software (SPSS Inc.; Chicago, Illinois, United States).

RESULTS

Patient demographic characteristics and a flow chart of the present study are shown in Table 1 and Figure 1, respectively. Of the 30 patients enrolled in the Absorb Cohort A trial, 18 underwent serial MSCT at the 18-month and 5-year follow-up and were included in the present analysis. The mean age was 62 ± 8 years, 67% were male, 6% had diabetes mellitus, and 78% had stable angina pectoris. The most frequently treated vessel was the left anterior descending coronary artery (44%) and the mean lesion length at baseline was 9.1 ± 3.6mm.

Table 1.

Baseline Clinical and Angiographic Characteristics (n = 18)

Age, y  62.1±7.8 
Male gender  12 (67) 
Current tobacco use  2 (11) 
Diabetes mellitus  1 (6) 
Hypertension  11 (61) 
Hypercholesterolemia  13 (76) 
Family history of coronary artery disease  13 (72) 
Stable angina  14 (78) 
Unstable angina  4 (22) 
Prior MI  2 (11) 
Target vessel
RCA  4 (22) 
LAD  8 (44) 
LCX  6 (33) 
Lesion length, mm  9.1±3.6 
ACC/AHA lesion classification
B1  9 (50) 
B2  9 (50) 

ACC/AHA, American College of Cardiology/American Heart Association; LAD, left anterior descending coronary artery; LCX, left circumflex coronary artery; MI, myocardial infarction; RCA, right coronary artery.

Data are expressed as no. (%) or mean ± standard deviation

All scaffolds (n = 18) could be assessed by MSCT at the 18-month and 5-year follow-up. Regarding the nonintervened segments, of 72 possible analysable segments, 1 segment was excluded at 18 months due to motion artefacts (Figure 1). The mean scaffold length was 11.9 ± 1.9mm and the mean length of the nonintervened segments was 22.6 ± 11.7mm.

Matched Segment Serial Comparison

Between the 18-month and 5-year follow-up, scaffolded segments showed no significant change in any of the analyzed parameters, including mean plaque burden, TAV, total lumen volume, and vessel volume (Table 2 and Figure 2). Control segments had a significant temporal increase in atherosclerotic burden as determined by the mean plaque burden (increased in 2.7 ± 6.5%; P = .03) and TAV (increased in 8.0 ± 22.8mm3; P < .01) (Table 2 and Figure 2).

Table 2.

Multisclice Computed Tomography Intravascular Ultrasound-like Analysis Results

  Scaffold (n = 18)Nonintervened (n = 71)Scaffold vs non TV* 
  18 mo  5 y  Change  P value  18 mo  5 y  Change  P value   
Atheroma volume, %  49.3±10.5  48.1±8.7  −1.2±7.7  .51  44.6±9.9  47.3±11.0  2.7±6.5  < .01  .03 
Change in total atheroma volume, %      0.6±22.0        11.9±25.6    .09 
Normalized total atheroma volume, mm3  94.2±34.6  92.6±32.2  −1.6±18.7  .72  95.0±33.5  103.0±36.2  8.0±22.8  < .01  .10 
Normalized total lumen volume, mm3  96.1±33.6  99.8±37.0  3.7±14.4  .28  122.2±50.8  118.8±51.7  −3.4±19.83  .16  .16 
Normalized vessel volume, mm3  190.3±54.9  192.4±57.5  2.1±16.4  .59  217.2±69.7  221.8±67.6  4.6±29.0  .18  .72 

TV, target vessel.

Data are expressed as mean [interquartile range] or mean ± standard deviation.

*

P value for changes.

Figure 2.

Multislice computed tomography intravascular ultrasound-like parameters. Scaffold segments showed no significant temporal change in vessel, lumen, and plaque volume parameters. The nonintervened segments showed an increase in the plaque volume (C), representing a higher percentage of the vessel area (D).

(0.29MB).
Comparison of Natural History of Atherosclerosis in Scaffolded vs Nonintervened Segments

The change in percent atheroma volume was significantly different between scaffolded regions and nonintervened segments. The mean plaque burden decreased by 1.2 ± 7.7% in the scaffolded segments but increased by 2.7 ± 6.5% in the nonintervened segments (P = .03) (Table 2 and Figure 2). There was also a trend to a difference in the change of normalized TAV (P = .10) and percent change in TAV (P = .09) in favor of the scaffolded segments (Table 2, Figures 2 and 3). The change in the vessel volume was only slightly greater in the nonintervened segments (P = .72). Although the difference between groups was not significant, the larger increase in plaque burden without a proportional increase in vessel volume in the nonintervened segment resulted in an opposite change in the lumen volume; while there was a lumen gain (increase of 3.7 ± 14.4mm3) in the scaffolded segment, lumen loss was observed in nonintervened segments (a decrease of 3.4 ± 19.8mm3; P = .16) (Table 2, Figures 2 and 3). An example of intrapatient comparison of matched segments is given in Figure 4.

Figure 3.

Percentage change in the atheroma volume in the scaffolded (blue) and nonintervened vessels (red). Each dot represents one segment. The observed shift to the left in scaffolded regions corresponds to a trend toward atherosclerosis regression compared with nonintervened vessels (P = .09). TAV, total atheroma volume.

(0.12MB).
Figure 4.

A: lumen and vessel areas of a scaffold implanted in the left anterior descending coronary artery at 18 months (upper panel, left) and 5 years (upper panel, right). There is an increase in the lumen volume and a decrease in the plaque burden (lower panel). B: lumen and vessel areas of the same patient but in the proximal right coronary artery at 18 months (upper panel, left) and 5 years (upper panel, right). There is an increase in the plaque burden (lower panel) and vessel volume with a slight increase in the lumen volume (lower panel). PB, plaque burden.

(0.56MB).
DISCUSSION

The main findings of the present study can be summarized as follows: a) Segments treated with Absorb BVS 1.0 showed stabilization of the atherosclerotic process, without a significant paired change in the vessel, lumen, or plaque dimensions; b) nonintervened coronary segments showed a significant increase in the plaque volume and percent atheroma volume, and c) the comparison between scaffolded and nonintervened segments showed a significant benefit from the Absorb BVS scaffold in terms of plaque burden.

Coronary atherosclerosis has posed a challenge to medical practice in terms of reversion of its chronic progressive inflammatory process and subsequent symptoms and events.6,8,10,15,16 In addition, many individual factors and therapeutic interventions may influence coronary plaque modification such as diabetes mellitus, waist circumference, serum CD40L, baseline diastolic blood pressure, sex, and aptitude in improving the lipid profile and C-reactive protein.7,17–19 The present study, being a matched segment within-patient comparison, assessed the long-term progression of atherosclerosis in segments treated by a scaffold and nonintervened segments for the first time. It raises the hypothesis that local therapy with Absorb BVS could provide an additional benefit to pharmacological therapy in terms of atherosclerosis regression. Importantly, the atherosclerosis progression observed in the nonintervened segments is not at variance with previous data that used the same methodology10 and did not result in coronary events.5

The plaque burden reduction in the Absorb BVS-implanted coronary segments has been documented previously.4,20 The explanation for this finding may lie in the ability of mTOR (mammalian target of rapamycin) inhibitors to hinder atherosclerotic plaque formation. Rapamycin and rapalogs are potent inhibitors of vascular smooth muscle cell proliferation. The mTOR inhibitors have antimacrophage properties through different mechanisms such as inhibition of monocyte chemoattractant protein-1 upregulation, impaired recruitment of monocytes to the vessel, and downregulation of de novo protein synthesis.21 The mTOR complex inhibition also prevents lipid accumulation in the plaque due to stimulation of cholesterol efflux and downregulation of low-density lipoprotein and scavenger receptors.21 It has been hypothesized that everolimus may produce a local autophagic response resulting in degradation and/or efflux of lipids via lipophagy and the loss of macrophages in the plaque.22 Indeed, also in animal studies, systemic administration of rapamycin or everolimus has been shown to promote 7% to 85% plaque reduction.21,23,24 However, this process is not fully understood since the Absorb BVS elutes 80% of everolimus within 30 days and the plaque regression in patients treated with Absorb BVS occurs only after 2 years.4,20 We also hypothesize that the disappearance of struts with consequent shrinking of connective tissue may reduce plaque burden.

The impact of 5 coronary devices on plaque sizes by intravascular ultrasound have been compared previously: (Absorb BVS eluting scaffold vs Absorb BVS 1.0 and 1.1; everolimus eluting metallic stent vs Xience V; bare metal stent vs Vision, and paclitaxel-eluting metallic stent vs Taxus).20 At 6 months of follow-up, all devices induced an increase in the total plaque area but Vision and Taxus induced larger increases than the other devices (Absorb BVS [1.0 and 1.1] and Xience V), (P = .0002). The comparison at the 2-year follow-up showed that Absorb BVS 1.1 had a larger increase from post-procedure in total plaque compared with Absorb BVS 1.0, Xience V and Taxus (P = .0499). However, in Absorb BVS 1.1, total plaque showed a reduction of 2.2% from 1 to 3 years. Taxus showed a 9% increase in vessel area, which was much larger than that of Absorb BVS, Xience V or Vision. In addition, Haude et al25 have shown that the DREAMS (drug-eluting absorbable magnesium scaffold) showed a vessel area reduction at 6 months and even more between 6 months and 12 months. These observations highlight the fact that the vessel wall response varies according to the device design. At this point, it is not possible to fully understand whether it is the drug, the polymer, or the constituents of the back bone (metal vs polymer) that play the most determinant role in triggering these changes. However, permanent devices hinder any further reduction of plaque size by lastingly staying in the vessel wall. On the other hand, bioresorbable scaffolds are designed to provide temporary scaffolding of the coronary vessel wall, effectively inhibit neointima formation (by eluting everolimus), and also prevent late complications such as stent thrombosis by their disappearance.

In addition to the plaque burden reduction, it has been hypothesized that Absorb BVS may seal thin-cap fibroatheromas, which are lipid core plaques covered by a thin fibrous cap (< 65μm).26 An optical coherence tomography study has shown that 1 year after Absorb BVS implantation there is formation of symmetric neo-tissue with a mean thickness of 220μm.26 As the device is completely degraded, this may therefore favor the use of a bioresorbable device for the treatment of thin-cap fibroatheromas. Furthermore, preclinical studies have demonstrated that the main component of the neointima following Absorb BVS implantation is fibrous tissue, whereas fibrin and granulomatous cells are infrequent at long-term follow-up.27

Finally, the present study documents the longest noninvasive assessment after Absorb BVS implantation and demonstrates the feasibility of MSCT in following up patients with bioresorbable polymeric devices and quantifying the atherosclerotic burden throughout the coronary tree.

Limitations

The present study is a retrospective analysis that assessed patients in a first-in-human trial, including patients with low clinical and anatomical complexity. Our results should be considered as hypothesis-generating, given the small sample size herewith described, which does not allow a definitive statement that Absorb BVS should be used as a standard therapy for plaque regression. Additionally, progression/regression studies have shown that that the larger the percent atheroma volume at baseline, the higher the chance of regression. This finding may have the potential to influence the more pronounced regression at scaffolded segments. The ongoing Multicentre Prospective Natural History Study Using Multimodality Imaging in Patients With Acute Coronary Syndromes (PROSPECT ABSORB trial; ClinicalTrials.gov Identifier: NCT02171065) will examine whether the treatment of lesions with plaque burden ≥ 70% with the Absorb BVS plus optimal medical therapy safely increases the minimal lumen diameter at 2 years compared with optimal medical treatment alone and may add further evidence in this regard.

CONCLUSIONS

In this small series, Absorb BVS showed the potential to provide an additional benefit to pharmacological therapy in locally reducing the progression of the percent plaque burden. These findings should be confirmed in larger studies.

FUNDING

The Absorb Cohort A trial was sponsored by Abbott Vascular (Santa Clara, California, United States).

CONFLICTS OF INTEREST

S. Veldhof is full-time employee of Abbott Vascular, Diegem, Belgium.

References
[1]
P.W. Serruys, H.M. Garcia-Garcia, Y. Onuma.
From metallic cages to transient bioresorbable scaffolds: change in paradigm of coronary revascularization in the upcoming decade?.
Eur Heart J., 33 (2012), pp. 16b-25b
[2]
R. Waksman.
Biodegradable stents: they do their job and disappear.
J Invasive Cardiol., 18 (2006), pp. 70-74
[3]
H.M. Garcia-Garcia, P.W. Serruys, C.M. Campos, T. Muramatsu, S. Nakatani, Y.J. Zhang, et al.
Assessing bioresorbable coronary devices: methods and parameters.
JACC Cardiovasc Imaging., 7 (2014), pp. 1130-1148
[4]
P.W. Serruys, Y. Onuma, H.M. Garcia-Garcia, T. Muramatsu, R.J. Van Geuns, B. De Bruyne, et al.
Dynamics of vessel wall changes following the implantation of the Absorb everolimus-eluting bioresorbable vascular scaffold: a multi-imaging modality study at 6, 12, 24 and 36 months.
EuroIntervention., 9 (2014), pp. 1271-1284
[5]
Y. Onuma, D. Dudek, L. Thuesen, M. Webster, K. Nieman, H.M. Garcia-Garcia, et al.
Five-year clinical and functional multislice computed tomography angiographic results after coronary implantation of the fully resorbable polymeric everolimus-eluting scaffold in patients with de novo coronary artery disease: the ABSORB cohort A trial.
JACC Cardiovasc Interv., 6 (2013), pp. 999-1009
[6]
S.J. Nicholls, C.M. Ballantyne, P.J. Barter, M.J. Chapman, R.M. Erbel, P. Libby, et al.
Effect of two intensive statin regimens on progression of coronary disease.
N Engl J Med., 365 (2011), pp. 2078-2087
[7]
S.J. Nicholls, E.M. Tuzcu, I. Sipahi, A.W. Grasso, P. Schoenhagen, T. Hu, et al.
Statins, high-density lipoprotein cholesterol, and regression of coronary atherosclerosis.
JAMA., 297 (2007), pp. 499-508
[8]
S.E. Nissen, E.M. Tuzcu, P. Schoenhagen, B.G. Brown, P. Ganz, R.A. Vogel, REVERSAL Investigators, et al.
Effect of intensive compared with moderate lipid-lowering therapy on progression of coronary atherosclerosis: a randomized controlled trial.
JAMA., 291 (2004), pp. 1071-1080
[9]
J.A. Ormiston, P.W. Serruys, E. Regar, D. Dudek, L. Thuesen, M.W. Webster, et al.
A bioabsorbable everolimus-eluting coronary stent system for patients with single de-novo coronary artery lesions (ABSORB): a prospective open-label trial.
Lancet., 371 (2008), pp. 899-907
[10]
S.L. Papadopoulou, L.A. Neefjes, H.M. Garcia-Garcia, W.J. Flu, A. Rossi, A.S. Dharampal, et al.
Natural history of coronary atherosclerosis by multislice computed tomography.
JACC Cardiovasc Imaging., 5 (2012), pp. S28-S37
[11]
M.J. Boogers, A. Broersen, J.E. Van Velzen, F.R. De Graaf, H.M. El-Naggar, P.H. Kitslaar, et al.
Automated quantification of coronary plaque with computed tomography: comparison with intravascular ultrasound using a dedicated registration algorithm for fusion-based quantification.
Eur Heart J., 33 (2012), pp. 1007-1016
[12]
M.A. De Graaf, A. Broersen, P.H. Kitslaar, C.J. Roos, J. Dijkstra, B.P. Lelieveldt, et al.
Automatic quantification and characterization of coronary atherosclerosis with computed tomography coronary angiography: cross-correlation with intravascular ultrasound virtual histology.
Int J Cardiovasc Imaging., 29 (2013), pp. 1177-1190
[13]
W.G. Austen, J.E. Edwards, R.L. Frye, G.G. Gensini, V.L. Gott, L.S. Griffith, et al.
A reporting system on patients evaluated for coronary artery disease. Report of the Ad Hoc Committee for Grading of Coronary Artery Disease, Council on Cardiovascular Surgery, American Heart Association.
Circulation., 51 (1975), pp. 5-40
[14]
G.S. Mintz, H.M. Garcia-Garcia, S.J. Nicholls, N.J. Weissman, N. Bruining, T. Crowe, et al.
Clinical expert consensus document on standards for acquisition, measurement and reporting of intravascular ultrasound regression/progression studies.
EuroIntervention., 6 (2011), pp. 1123-1130
[15]
S.E. Nissen, S.J. Nicholls, I. Sipahi, P. Libby, J.S. Raichlen, C.M. Ballantyne, ASTEROID Investigators, et al.
Effect of very high-intensity statin therapy on regression of coronary atherosclerosis: the ASTEROID trial.
JAMA., 295 (2006), pp. 1556-1565
[16]
L. Räber, M. Taniwaki, S. Zaugg, H. Kelbæk, M. Roffi, L. Holmvang, IBIS 4 (Integrated Biomarkers and Imaging Study-4) Trial Investigators (NCT00962416), et al.
Effect of high-intensity statin therapy on atherosclerosis in non-infarct-related coronary arteries (IBIS-4): a serial intravascular ultrasonography study.
Eur Heart J., 36 (2015), pp. 490-500
[17]
H.M. Garcia-Garcia, V. Klauss, N. Gonzalo, S. Garg, Y. Onuma, C.W. Hamm, et al.
Relationship between cardiovascular risk factors and biomarkers with necrotic core and atheroma size: a serial intravascular ultrasound radiofrequency data analysis.
Int J Cardiovasc Imaging., 28 (2012), pp. 695-703
[18]
R. Puri, S.E. Nissen, C.M. Ballantyne, P.J. Barter, M.J. Chapman, R. Erbel, et al.
Factors underlying regression of coronary atheroma with potent statin therapy.
Eur Heart J., 34 (2013), pp. 1818-1825
[19]
R. Puri, S.E. Nissen, P. Libby, M. Shao, C.M. Ballantyne, P.J. Barter, et al.
C-reactive protein, but not low-density lipoprotein cholesterol levels, associate with coronary atheroma regression and cardiovascular events after maximally intensive statin therapy.
Circulation., 128 (2013), pp. 2395-2403
[20]
H.M. Garcia-Garcia, P.W. Serruys, C.M. Campos, Y. Onuma.
Differential impact of five coronary devices on plaque size: Insights from the ABSORB and SPIRIT trials.
Int J Cardiol., 175 (2014), pp. 441-445
[21]
W. Martinet, H. De Loof, G.R. De Meyer.
mTOR inhibition: a promising strategy for stabilization of atherosclerotic plaques.
Atherosclerosis., 233 (2014), pp. 601-607
[22]
V. Croons, W. Martinet, A.G. Herman, J.P. Timmermans, G.R. De Meyer.
Selective clearance of macrophages in atherosclerotic plaques by the protein synthesis inhibitor cycloheximide.
J Pharmacol Exp Ther., 320 (2007), pp. 986-993
[23]
R. Pakala, E. Stabile, G.J. Jang, L. Clavijo, R. Waksman.
Rapamycin attenuates atherosclerotic plaque progression in apolipoprotein E knockout mice: inhibitory effect on monocyte chemotaxis.
J Cardiovasc Pharmacol., 46 (2005), pp. 481-486
[24]
M.A. Mueller, F. Beutner, D. Teupser, U. Ceglarek, J. Thiery.
Prevention of atherosclerosis by the mTOR inhibitor everolimus in LDLR–/– mice despite severe hypercholesterolemia.
Atherosclerosis., 198 (2008), pp. 39-48
[25]
M. Haude, R. Erbel, P. Erne, S. Verheye, H. Degen, D. Böse, et al.
Safety and performance of the drug-eluting absorbable metal scaffold (DREAMS) in patients with de-novo coronary lesions: 12 month results of the prospective, multicentre, first-in-man BIOSOLVE-I trial.
Lancet., 381 (2013), pp. 836-844
[26]
S. Brugaletta, M.D. Radu, H.M. Garcia-Garcia, J.H. Heo, V. Farooq, C. Girasis, et al.
Circumferential evaluation of the neointima by optical coherence tomography after ABSORB bioresorbable vascular scaffold implantation: can the scaffold cap the plaque?.
[27]
Y. Onuma, P.W. Serruys, L.E. Perkins, T. Okamura, N. Gonzalo, H.M. Garcia-Garcia, et al.
Intracoronary optical coherence tomography and histology at 1 month and 2, 3, and 4 years after implantation of everolimus-eluting bioresorbable vascular scaffolds in a porcine coronary artery model: an attempt to decipher the human optical coherence tomography images in the ABSORB trial.
Circulation., 122 (2010), pp. 2288-2300
Copyright © 2015. Sociedad Española de Cardiología
Idiomas
Revista Española de Cardiología (English Edition)

Subscribe to our newsletter

Article options
Tools
Supplemental materials
es en

¿Es usted profesional sanitario apto para prescribir o dispensar medicamentos?

Are you a health professional able to prescribe or dispense drugs?

es en
Política de cookies Cookies policy
Utilizamos cookies propias y de terceros para mejorar nuestros servicios y mostrarle publicidad relacionada con sus preferencias mediante el análisis de sus hábitos de navegación. Si continua navegando, consideramos que acepta su uso. Puede cambiar la configuración u obtener más información aquí. To improve our services and products, we use "cookies" (own or third parties authorized) to show advertising related to client preferences through the analyses of navigation customer behavior. Continuing navigation will be considered as acceptance of this use. You can change the settings or obtain more information by clicking here.