Estudo longitudinal dos efeitos da deficiência estrogênica no fêmur de ratas
Carregando...
Data
2011-06-30
Autores
Pereira, Erika Cristina Sbrisse [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
É cada vez maior a parcela de pessoas idosas na população brasileira e com este fenômeno o número de pessoas afetadas por patologias crônico-degenerativas. Dentre estas uma doença que merece destaque é a osteoporose, uma vez que vem se tornando um problema de saúde pública. Um dos principais fatores de risco para osteoporose é a deficiência estrogênica, sendo assim este estudo objetivou avaliar o efeito da deficiência estrogênica no tecido ósseo durante um período de 360 dias através de análise radiográfica e biomecânica. Para tanto 80 ratas, com 3 meses de idade e peso de aproximadamente 250g, foram divididas em 10 grupos experimentais (n=8) de acordo com o tempo de sacrifício e cirurgia a que foram submetidas (ovariectomia e cirurgia sham). As ratas pertencentes aos grupos OVZ e SHAM tiveram sua ração controlada (30g por animal). Após o período determinado (30, 60, 90, 180 e 360 dias das cirurgias) as ratas foram pesadas, anestesiadas e sacrificadas e seus fêmures retirados para análise. Os dados obtidos foram submetidos ao teste estatístico ANOVA e Tukey, com nível de significância de 5%. De acordo com os resultados obtidos observou-se que nos períodos de 30, 60 e 90 dias os efeitos da deficiência estrogênica sobre o tecido ósseo foram significativos
The Brazilian population has undergone a process of aging, and this phenomenon with the number of people affected by chronic diseases is increasing. Among these a disease that deserves mention is osteoporosis, since it has become a public health problem. One of the main risk factors for osteoporosis is estrogen deficiency, so to better understand how estrogen deficiency affects the bone tissue present study aimed to evaluate the effect of estrogen deficiency on bone tissue over a period of 360 days by radiographic and biomechanics analysis. For this purpose 80 rats, 3 months old and weighing about 250g were divided into 10 groups (n = 8) according to the time of sacrifice and who underwent surgery (ovariectomy and sham surgery). The rats belonging to groups OVZ and SHAM had controlled his diet (30g per animal). After the specified period (30, 60, 90, 180 and 360 days of surgery) the rats were weighed, anesthetized and sacrificed, and their femurs were removed for analysis. Data were submitted to ANOVA and Tukey tests with significance level of 5%. According to the results obtained showed that in periods of 30, 60 and 90 days the effects of estrogen deficiency on bone tissue were significant
The Brazilian population has undergone a process of aging, and this phenomenon with the number of people affected by chronic diseases is increasing. Among these a disease that deserves mention is osteoporosis, since it has become a public health problem. One of the main risk factors for osteoporosis is estrogen deficiency, so to better understand how estrogen deficiency affects the bone tissue present study aimed to evaluate the effect of estrogen deficiency on bone tissue over a period of 360 days by radiographic and biomechanics analysis. For this purpose 80 rats, 3 months old and weighing about 250g were divided into 10 groups (n = 8) according to the time of sacrifice and who underwent surgery (ovariectomy and sham surgery). The rats belonging to groups OVZ and SHAM had controlled his diet (30g per animal). After the specified period (30, 60, 90, 180 and 360 days of surgery) the rats were weighed, anesthetized and sacrificed, and their femurs were removed for analysis. Data were submitted to ANOVA and Tukey tests with significance level of 5%. According to the results obtained showed that in periods of 30, 60 and 90 days the effects of estrogen deficiency on bone tissue were significant
Descrição
Palavras-chave
Osteoporose, Ovariectomia, Tecido ósseo, Osteopenia, Osteoporosis
Como citar
PEREIRA, Erika Cristina Sbrisse. Estudo longitudinal dos efeitos da deficiência estrogênica no fêmur de ratas. 2011. 69 f. Dissertação (mestrado) – Universidade Estadual Paulista, Faculdade de Odontologia de São José dos Campos, 2011.