Comparison of diamond-like carbon-coated stents versus uncoated stainless steel stents in coronary artery disease

Airoldi, Flavio; Colombo, Antonio; Tavano, Davide; Stanković, Goran; Klugmann, Silvio; Paolillo, Vito; Bonizzoni, Erminio; Briguori, Carlo; Carlino, Mauro; Montorfano, Matteo; Liïstro, Francesco; Castelli, Alberto; Ferrari, Ângela; Sgura, Fabio; Mario, Carlo Di

doi:10.1016/j.amjcard.2003.10.048

Cited by 78 publications

(48 citation statements)

References 19 publications

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“…The diamond-like carbon films was deposited on stainless steel substrates using plasma-assisted chemical vapor deposition (PACVD) from either methane, acetylene, or 1,3-butadiene precursors with argon or hydrogen as a dilute [9,10]. Amorphous carbon was created on the stainless steel to lower the friction [11].…”

Section: Introductionmentioning

confidence: 99%

Growth of carbon nanotubes and microfibers over stainless steel mesh by cracking of methane

Gao

Kiwi‐Minsker

Renken

2008

Surface and Coatings Technology

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The La 2 NiO 4 film was synthesized on the 304 stainless steel (SS) mesh. The hydrogen reduction of La 2 NiO 4 generated homogeneous nanocatalyst particles (probably Ni/La 2 O 3 ) over which methane was cracked, producing carbon nanotubes/microfibers and hydrogen. The carbon nanotubes/microfibers were strongly bonded to the SS mesh. It was observed that the methane conversion always reached its maximum at the cracking temperature of 750°C regardless of its concentration varying from 5% to 100%. The cracking of 5% methane diluted in nitrogen generated multiwalled carbon nanotubes while the cracking of 10-100% methane resulted in the formation of carbon solid microfibers together with globular carbon particles. Higher concentration of methane created thicker carbon fibers and a 30% concentration of methane resulted in the highest deposits of carbon on the mesh. After a compressed air blow and ultrasonic treatment, the carbon deposits were still strongly adhered to the mesh. As a result of the carbon tubes/fibers coverage, the specific surface area of the SS mesh was enhanced significantly from 0.03 m 2 /g to 21-45 m 2 /g. XRD, HRTEM and Raman studies confirmed that the carbon products were of graphitic structure. Such advanced mesh material would have great application potential in industrial catalysis and other areas.

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Section: Introductionmentioning

confidence: 99%

Growth of carbon nanotubes and microfibers over stainless steel mesh by cracking of methane

Gao

Kiwi‐Minsker

Renken

2008

Surface and Coatings Technology

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“…It differences in restenosis rates and late loss between the two stents at six months after implantation. The limitation of this study was that the findings could not be extended to other types of stents with different designs or different carbon coatings 19 . Thus, the present study adds new information on the lack of evidence that patients treated with coated stent present better results than those treated with uncoated stents may indicate that these differences do not exist or that they could not be detected in this study.…”

Section: Discussionmentioning

confidence: 95%

Estudo comparativo randomizado do implante de Stent de aço inoxidável recoberto por carbono semelhante ao diamante versus não recoberto em pacientes com doença arterial coronariana

Meireles¹,

Abreu²,

Forte³

et al. 2007

Arq. Bras. Cardiol.

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“…However, it is demonstrated that carbon coating does not modify the biological response of the vessel wall to stent implantation [14]. Recently, two randomized clinical trials could not demonstrate any advantage of carbon-coated stents over pure stainless steel stents [15, 16]. We used the carbon ion-implanted stents, Arthos inert stents.…”

Section: Discussionmentioning

confidence: 99%

Does a Carbon Ion-Implanted Surface Reduce the Restenosis Rate of Coronary Stents?

et al. 2005

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Background: Neointimal hyperplasia and resulting restenosis limit the long-term success of coronary stenting. Heavy metal ions induce an inflammatory and allergic reaction, and result in in-stent restenosis. However, a carbon ion-implanted surface might prevent heavy metal ions from diffusing into surrounding tissue. Methods: 140 lesions in 140 patients with coronary lesions underwent implantation of carbon-implanted surface stents (Arthos^inert stent group, n = 70) or control stents (Arthos stent group, n = 70). The primary end point was the in-stent restenosis and the secondary end point was the value of hs-CRP at 48 h and 6 months after coronary stenting. Clinical and angiographic follow-ups were performed at 6 months. Results: The rate of in-stent restenosis was lower in the Arthos^inert stent group (15.9%, 10/63) than in the Arthos stent group (20.9%, 13/62), but there were no significant differences between both groups (p = 0.56). The value of hs-CRP at 48 h was lower in the Arthos^inert stent group (13.9 ± 13.4 mg/dl) than in the Arthos stent group (24.5 ± 26.0 mg/dl) with significant differences (p = 0.04). However, the differences between two groups were not statistically significant at 6 months (p = 0.76). Conclusions: As compared with a standard coronary stent, a carbon ion-implanted stent shows no considerable benefit for the prevention of in-stent restenosis within the range of this study. Despite all the limitations of this study, a positive effect of a carbon ion-implanted stent in reducing inflammatory reaction after coronary revascularization seems likely.

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Comparison of diamond-like carbon-coated stents versus uncoated stainless steel stents in coronary artery disease

Cited by 78 publications

References 19 publications

Growth of carbon nanotubes and microfibers over stainless steel mesh by cracking of methane

Growth of carbon nanotubes and microfibers over stainless steel mesh by cracking of methane

Estudo comparativo randomizado do implante de Stent de aço inoxidável recoberto por carbono semelhante ao diamante versus não recoberto em pacientes com doença arterial coronariana

Does a Carbon Ion-Implanted Surface Reduce the Restenosis Rate of Coronary Stents?

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