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Radiolesão vascular como efeito deletério da braquiterapia intra-arterial com dose elevada de Samário-153 em coelhos hipercolesterolêmicos Vascular radiolesion as a deleterious effect of high-dose-rate intraarterial brachytherapy with Samarium-153 in hypercholesterolemic rabbits

Authors :
Dalton Bertolim Précoma
Lúcia Noronha
Álvaro Vieira Moura
Airton Seiji Yamada
José Knopfholz
César Lopes Dusilek
Rita Perussolo
Paulo Roberto Slud Brofman
Márcia Olandoski
José Cláudio Meneghetti
Source :
Arquivos Brasileiros de Cardiologia, Vol 87, Iss 4, Pp 512-519 (2006)
Publication Year :
2006
Publisher :
Sociedade Brasileira de Cardiologia (SBC), 2006.

Abstract

OBJETIVO: Este estudo tem por objetivo avaliar as alterações vasculares morfológicas e morfométricas induzidas pela braquiterapia com Samário-153 (153 Sm) em coelhos hipercolesterolêmicos, com doses elevadas. MÉTODOS: Foram analisados 43 coelhos hipercolesterolêmicos, brancos, da raça New Zealand, e o total de 86 artérias ilíacas submetidas a lesão por balão de angioplastia. Divididos em três grupos: dois (GI) irradiados com as doses de 15Gy (n=14) e 60Gy (n=36) e um grupo controle (n=36). Foram realizadas avaliação histológica morfométrica e análise histológica qualitativa para análise tecidual. RESULTADOS: Foram observadas uma redução significativa da neoproliferação intimal (NPI) no GI 15 Gy (pOBJECTIVE: This study was designed to evaluate vascular morphological and morphometric changes induced by brachytherapy with samarium-153 (Sm-153) at high doses in hypercholesterolemic rabbits. METHODS: Forty-three New Zealand White hypercholesterolemic rabbits were analyzed, and the total of 86 iliac arteries underwent balloon angioplasty injury. The rabbits were divided into three different groups: two irradiation groups (IG) assigned to 15 Gy (n=14) and 60 Gy (n=36) irradiation doses, respectively, and a control group (n = 36). Histomorphometric and qualitative histological analyses were performed for tissue evaluation. RESULTS: Significant reductions were found in neointimal proliferation (NIP) (p< 0.0001), media area (MA) (p

Details

Language :
English, Portuguese
ISSN :
0066782X and 16784170
Volume :
87
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Arquivos Brasileiros de Cardiologia
Publication Type :
Academic Journal
Accession number :
edsdoj.0240b7865dc94ddf829c5445b18c5a81
Document Type :
article
Full Text :
https://doi.org/10.1590/S0066-782X2006001700017