Análise imunohistoquímica e histomorfométrica do reparo alveolar em ratos espontaneamente hipertensos (SHR) tratados com losartan

Autores

DOI:

https://doi.org/10.33448/rsd-v9i11.10634

Palavras-chave:

Losartan; Angiotensina II; Osso.

Resumo

A hipertensão é uma condição multifatorial com altos índices de complicações, como doenças cardiovasculares e renais, o que a torna um problema de saúde pública mundial. Esta doença altera a regulação do cálcio induzindo a perda óssea, que é limitada por medicamentos anti-hipertensivos. Uma dessas drogas, o losartan, inibe os receptores AT1 da angiotensina II (Ang II). O objetivo deste estudo foi comparar o processo de reparo alveolar em ratos espontaneamente hipertensos (SHR) e ratos Wistar, e avaliar o efeito do losartan na dinâmica óssea. Ratos tratados e não tratados foram submetidos à extração dentária do incisivo superior direito e eutanasiados em 7, 14 ou 28 dias após a cirurgia. O reparo alveolar foi então analisado histomorfometricamente e imunohistoquimicamente através da medição de proteínas envolvidas no metabolismo ósseo. Os dados foram analisados por meio do teste não paramétrico de Kruskal-Wallis, seguido do teste de Mann Whitney para comparação de amostras em momentos diferentes. O reparo alveolar foi lento em SHRs, enquanto o losartan aumentou a formação óssea e a espessura trabecular em SHRs e Wistars. Como as proteínas analisadas são encontradas no osso dinâmico, sugere-se que o losartan interfere nas ações da angiotensina II e do sistema renina-angiotensina e limita o metabolismo ósseo.

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05/12/2020

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PEREIRA, C. C. S.; MANRIQUE, N. .; MOURA, J. de .; MULINARI-SANTOS, G. .; MONTEIRO, N. G. .; PITOL-PALIN, L. .; ANTONIALI, C. .; OKAMOTO, R. . Análise imunohistoquímica e histomorfométrica do reparo alveolar em ratos espontaneamente hipertensos (SHR) tratados com losartan. Research, Society and Development, [S. l.], v. 9, n. 11, p. e83991110634, 2020. DOI: 10.33448/rsd-v9i11.10634. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/10634. Acesso em: 30 jun. 2024.

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Ciências da Saúde