The use of the immunohistochemical biotin-free visualization systems for estrogen receptor evaluation of breast cancer
Appl. cancer res
;
29(3): 112-117, July-Sept. 2009. ilus, tab
Artigo
em Inglês
| LILACS, Inca
| ID: lil-547658
ABSTRACT
Background: A novel generation of immunohistochemical visualization systems based on a biotin-free polymeric (BFP) technology has recently been released. We have compared the new BFP and the classical streptavidin-biotin (SAB) systems to evaluate estrogen receptor in breast carcinomas. Methods: Serial sections from a tissue microarray containing 320 invasive breast carcinomas were stained by immunohistochemistry for estrogen receptor using the rabbit monoclonal antibody SP1. Eleven different visualization systems were used, including seven BFP systems (six second-generation: DAKO Advance TM , Leica Novolink TM, Zymed SuperPicTureTM , Zymed PicTure Max TM , Biogenex Super Sensitive Non-Biotin HRP TM , CellMarque Mouse/Rabbit Polydetector HRP/DABTM ; one first-generation: DAKO EnVision+TM) and four SAB systems (DAKO LSAB+TM ; Signet EasyPathTM ; Biogenex Super SensitiveTM and CellMarque Mouse/Rabbit Immunodetector HRP/DABTM). All visualization systems were used following the instructions provided by the manufacturers. All slides were scanned using Zeiss Mirax Scan, and the intensity of immunohistochemistry staining was automatically quantified using HistoQuant software. The cytoplasm staining was visually evaluated as absent (0), weak (1), moderate (2), or strong (3). Results: The BFP Advance and Novolink , and the SAB LSAB + showed the highest staining intensity among all the systems (P<0.01). However, LSAB+ showed the highest cytoplasm staining among those used (p<0.01). .. The BFP Advance and Novolink showed the strongest staining intensity and, followed by all the other second-generation BFPs, represent a powerful tool for immunohistochemistry standardization of estrogen receptor evaluation of breast carcinomas.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Biotina
/
Neoplasias da Mama
/
Receptores de Estrogênio
/
Análise em Microsséries
Tipo de estudo:
Estudo diagnóstico
Idioma:
Inglês
Revista:
Appl. cancer res
Assunto da revista:
Neoplasias
Ano de publicação:
2009
Tipo de documento:
Artigo
País de afiliação:
Brasil
/
Reino Unido
Instituição/País de afiliação:
Hospital A. C. Camargo/BR
/
Universidade Federal de Minas Gerais/BR
/
Universidade de Campinas/BR
/
University College London/GB
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