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Acute changes in histopathology and intravascular imaging after catheter-based renal denervation in a porcine model.
Sakaoka, Atsushi; Takami, Akiyuki; Onimura, Yuji; Hagiwara, Hitomi; Terao, Hisako; Kumagai, Fumiaki; Matsumura, Kiyoshi.
Afiliación
  • Sakaoka A; R&D Headquarters, Terumo Corporation, Tokyo, Japan.
  • Takami A; Graduate School of Engineering, Osaka Institute of Technology, Osaka, Japan.
  • Onimura Y; Faculty of Medical Sciences, University of Fukui, Fukui, Japan.
  • Hagiwara H; R&D Headquarters, Terumo Corporation, Tokyo, Japan.
  • Terao H; R&D Headquarters, Terumo Corporation, Tokyo, Japan.
  • Kumagai F; R&D Headquarters, Terumo Corporation, Tokyo, Japan.
  • Matsumura K; Laboratory of Safety Evaluation, Division of Safety, Hatano Research Institute, Food and Drug Safety Center, Kanagawa, Japan.
Catheter Cardiovasc Interv ; 90(4): 631-638, 2017 Oct 01.
Article en En | MEDLINE | ID: mdl-28639746
OBJECTIVES: We first aimed to identify the histopathological changes occurring immediately after renal denervation (RDN) with radiofrequency energy, and then to assess the feasibility of determining procedural success using currently available clinical intravascular imaging techniques. BACKGROUND: Catheter-based RDN has been used as an alternative therapy for hypertension. However, no practical endpoint to determine procedural success during treatment has been established. METHODS: A total of 39 ablation lesions were induced in vivo in eight porcine renal arteries and a total of 15 ablation lesions were induced ex vivo in five excised porcine renal arteries with a radiofrequency delivery device. Acute histological changes and appearance on intravascular imaging of the lesions were investigated with light microscopy, transmission electron microscopy, intravascular ultrasound (IVUS), and optical frequency domain imaging (OFDI). RESULTS: Marked changes were noted in media, adventitia, and perirenal-arterial nerves immediately after in vivo ablation. Changes visualized on IVUS were characterized by focal adventitial thickening comprising a relatively echogenic layer around a heterogeneously hypoechoic interior region, and on OFDI as disappearance of the external elastic membrane signals with high scattering of signals in the surface layer. The changes after ex vivo ablation were histopathologically identical to those from in vivo ablation. There were statistically significant positive correlations in measured dimensions (area, depth, width, and diameter) of ablation lesions between histopathology and IVUS/OFDI findings (Pearson correlation coefficients = 0.69-0.77). CONCLUSIONS: These findings suggest that observation of treated renal arteries by IVUS or OFDI immediately after RDN improves the success rate of RDN.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arteria Renal / Simpatectomía / Ablación por Catéter / Ultrasonografía Intervencional / Imagen Óptica / Riñón Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: Catheter Cardiovasc Interv Asunto de la revista: CARDIOLOGIA Año: 2017 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arteria Renal / Simpatectomía / Ablación por Catéter / Ultrasonografía Intervencional / Imagen Óptica / Riñón Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: Catheter Cardiovasc Interv Asunto de la revista: CARDIOLOGIA Año: 2017 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos