• Rogil Jose de Almeida Torres, Andrea Luchini, Regiane do Rocio de Almeida Torres, Luciano Rodrigo Silva de Oliveira, Caroline Luzia de Almeida Torres, Robson Antonio de Almeida Torres, Marcia Olandoski, Seigo Nagashima, NoronhaLucia deLdPontificia Universidade Católica do Paraná, CuritibaPR, Brazil, Pontificia Universidade Católica do Paraná, Curitiba/PR, Brazil., and Dalton Bertolim Precoma.
• Pontificia Universidade Católica do Paraná, CuritibaPR, Brazil, Pontificia Universidade Católica do Paraná, Curitiba/PR, Brazil.
• Clinics (Sao Paulo). 2014 Feb 1; 69 (2): 145-9.

ObjectiveTo evaluate the effect of blocking the angiotensin II AT-1 receptor by the systemic administration of candesartan on the expression of intercellular adhesion molecule-1 in the sclera and choroid of hypercholesterolemic rabbits.MethodsNew Zealand rabbits were divided into 3 groups, as follows: GI, which was fed a rabbit standard diet; GII, which was fed a hypercholesterolemic diet; and GIII, which received hypercholesterolemic diet plus candesartan. Samples of the rabbits' sclera and choroid were then studied by hematoxylin-eosin staining and histomorphometric and immunohistochemical analyses for intercellular adhesion molecule-1 expression.ResultsHistological analysis of hematoxylin- and eosin-stained sclera and choroid revealed that macrophages were rarely present in GI, and GII had significantly increased macrophage numbers compared to GIII. Moreover, in GII, the sclera and choroid morphometry showed a significant increase in thickness in comparison to GI and GIII. GIII presented a significant increase in thickness in relation to GI. Sclera and choroid immunohistochemical analysis for intercellular adhesion molecule-1 expression revealed a significant increase in immunoreactivity in GII in relation to GI and GIII. GIII showed a significant increase in immunoreactivity in relation to GI.ConclusionCandesartan reduced the expression of intercellular adhesion molecule-1 and consequently macrophage accumulation in the sclera and choroid of hypercholesterolemic rabbits.

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