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Master's Dissertation
DOI
https://doi.org/10.11606/D.5.2013.tde-02082013-143753
Document
Author
Full name
Cintia Taniguti Lima
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2013
Supervisor
Committee
Lacchini, Silvia (President)
Liberti, Edson Aparecido
Casarini, Dulce Elena
Title in Portuguese
Participação do sistema renina angiotensiva na lesão vascular em camundongos submetidos a sobrecarga salina
Keywords in Portuguese
Angiotensina II
Camundongos
Cloreto de sódio na dieta
Colágeno
Lesões do sistema vascular
Neointima
Sistema renina-angiotensina
Abstract in Portuguese
Estudamos se a sobrecarga salina leva ao aumento de neoíntima em vasos submetidos à lesão e avaliamos a participação do sistema renina-angiotensina neste processo. Usamos camundongos C57Bl6 machos tratados por 2 ou 12 semanas com NaCl 1% para beber ou água (grupos cont, sal2 e sal12), submetidos à lesão vascular. O grupo sal12 aumentou a lesão vascular e alterou a relação de fibras colágenas, com exacerbação de deposição colágena na lesão vascular, e a relação entre as angiotensinas II e (1-7) vasculares, com aumento de Ang (1-7) e sem redução de ang II após a lesão. Os resultados obtidos permitem concluir que a sobrecarga salina aumenta a neoíntima nas artérias com lesão e altera a relação entre angiotensinas II e (1-7) de forma possivelmente propiciar o aumento de relação íntima/média observado.
Title in English
Involvement of the renin angiotensin on vascular injury in mice subjected to saline overload
Keywords in English
Angiotensin II
Collagen
Mice
Neointima
Renin-angiotensin system
Sodium chloride dietary
Vascular system injuries
Abstract in English
We studied if salt overload leads to an increase in neointima in injured arteries, and evaluate the involvement of the renin-angiotensin in this process. Were used C57Bl6 male mice treated for 2 or 12 weeks with 1% NaCl to drink or water (cont, sal2 sal12 groups) submitted to vascular injury. The group sal12 increased vascular injury and altered the relationship of collagen fibers, with exacerbation of collagen deposition in the vascular injury, and the relationship between vascular angiotensin II and (1-7), with an increase of Ang (1-7) and no reduction of Ang II after injury. The results indicate that salt overload increases neointima in injured arteries, and modifies the relationship between angiotensin II and (1-7), possibly providing the increase in intima/media ratio observed.
 
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Publishing Date
2013-08-07
 
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