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Arch. oral res. (Impr.) ; 7(2): 161-167, Mayo-Aug. 2011. ilus
Article in Portuguese | LILACS, BBO | ID: lil-667665

ABSTRACT

Objetivos: Descrever e validar uma técnica alternativa econômica e eficiente para a confecção de amostras teciduais com arranjo matricial (tissue microarrays, TMA). Materiais e métodos: Utilizou-se um motor, um micromotor, um contra-ângulo redutor 16:1 e brocas trefina de aço inoxidável para osso. Análise histomorfométrica do volume das células acinares de glândulas parótidas foi realizada. Para testar marcadores imunoistoquímicos para células mioepiteliais, acinares e ductais das parótidas foram utilizados calponina e PCNA. Resultados: Na análise macroscópica e microscópica das lâminas, não foi encontrada perda total do tissue e nem mesmo deslocamento (parcial e/ou total) deste, sendo as perdas teciduais observadas apenas parciais. Das 90 lâminas analisadas, 59 (65%) obtiveram de 50% a 100% do tissue com ausência de artefato, deslocamento ou perda de tecido. Conclusão: O equipamento proposto pelos autores para a confecção deamostras teciduais com arranjo matricial representa uma alternativa econômica e eficiente.


Objectives: To describe and validate an inexpensive and efficient alternative for the production of tissue microarrays (TMA). Materials and methods: An electric-motor, a hand-piece, a reducing contra-angle hand-piece 16:1 and trephine stainless steel drills for bones were used in this study. A histomorphometric assessment of the volume of the acinar cells of parotid glands was performed. Calponin and PCNA were used to test the immunohistochemical markers for myoepithelial, acinar and ductal cells of parotid glands. Results: During the macroscopic and microscopic analysis, total loss of sections was not observed in any slide as well as artifactual ungluing (total and/or partial) of the sections. The loss of sections was partial. Fifty nine (65%) out of 90 slides showed 50%-100% of the tissue without technical artifact, artifactual ungluing or loss of the section. Conclusion: The equipment proposed by the authors for the production of arrays represents an inexpensive and efficient alternative.


Subject(s)
Humans , Tissue Array Analysis/instrumentation , Parotid Gland/pathology , Tissue Array Analysis/methods , Equipment Design , Immunohistochemistry , Reproducibility of Results
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