Fast and inexpensive self-made tissue microarray for immunohistochemical and in situ hybridization studies: examples with bladder cancer

  • Selim Komina Institute of Pathology - Skopje, R. Macedonia
  • Gordana Petrusevska
Keywords: Tissue microarray, HER-2 Chromogen in situ hybridization, bladder cancer

Abstract

Background: The tissue microarray (TMA), first described by Battifora and first implemented in 1998 by Kononen et al, is a powerful research tool, allowing simultaneous analysis of specimens from a large number of cases on one slide by routine slides. Unfortunately, commercial aray instruments are very expensive and thus not suitable for laboratories with limited funds. We describe simple and cost-effective method for constructing of manual TMA that can be performed by any anatomic pathology laboratory, requiring minimum skill and time.Methods: Skin punch biopsy needle of 2-mm diameter was used for extracting cores from 15 positive control breast cancer cases, 15 normal bladder tissue and 30 muscle-invasive bladder cancer and for injecting into recipient block.Result: : We constructed TMA block using skin punch biopsy needle of 2-mm, and succesfulfully performed HER 2 immunodetection and  Chromogen in situ hybridization studies, without substantial tissue loss.  10% of our tumor cases exhibited Her-2 neu overexpression.  An open source software programme “ТМА-Ј“ was applied  to facilitate management, viewing, analysis of tissue microarray images and associated clinico-pathology data.Conclusion: : This method could be done by any pathology laboratory and represents good and reliable alternative for commercially available, expensive devices and software solutions.DOI: 10.21276/apalm.2017.1166 

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Published
2017-02-19
Section
Original Article