Quantificação das regiões organizadoras de nucléolo (NORs) como parâmetro para avaliar a proliferação das células da granulosa
AUTOR(ES)
Silva, C.M., Serakides, R., Nascimento, E.F., Nunes, V.A, Ribeiro, A.F.C., Ocarino, N.M.
FONTE
Arquivo Brasileiro de Medicina Veterinária e Zootecnia
DATA DE PUBLICAÇÃO
2003-02
RESUMO
The goal of this study was to determine whether the quantification of the nucleolar organizer regions (AgNORs) is a useful parameter for evaluation of the proliferative potential of non-neoplastic granulosa cells in ovarian follicles at different stages of development. Seven ovaries from six-month-old rats, all of which in metestrus-diestrus, were studied. The number of AgNORs from 60 granulosa cell nuclei was quantified in secondary follicles with two to three layers of cells and in follicles with more than five layers of granulosa cells. Follicles with two to three layers had larger AgNORs in lower numbers, whereas more developed secondary follicles the AgNORs were predominantly smaller, scattered throughout the nucleus, and in significantly higher numbers. In conclusion, quantification of the nucleolar organizer regions is an appropriate parameter for differentiation of the proliferative potential of non-neoplastic granulosa cells.
ASSUNTO(S)
rato oócito célula da granulosa agnors
Documentos Relacionados
- Analise das regiões organizadoras de nucleolo (NORs) na avaliação do prognostico do adenocarcinoma aretal
- Regiões organizadoras do nucleolo (NORs) em celulas mesoteliais e carcinomatos as de liquidos caritarios : auxilio no diagnostico diferencial de exames citologicos
- Regiões organizadoras do nucleolo em cardiomiocitos de rato
- Regiões organizadoras de nucleolos como indice de proliferação celular nas leucemias agudas
- Regiões organizadoras de nucleolo na hematopoese normal e nas leucemias agudas