A novel method for processing resin-embedded specimens with metal implants for immunohistochemical labelling

Acta Histochem. 2009;111(6):538-42. doi: 10.1016/j.acthis.2008.04.001. Epub 2008 Jun 12.

Abstract

A major technical problem in the processing of resin-embedded tissues is the adhesion of the tissue sample on glass slides for immunohistochemical labelling. We therefore established a novel protocol for processing such specimens with improved attachment of the tissue sample during resin removal (deplastification). In order to demonstrate the feasibility of the procedure we employed a panel of smooth muscle cell maturation markers. The technique makes use of a silicone glue (Elastosil E41; Wacker Chemie, München, Germany) to attach the tissue samples to the glass slides. This allows resin dissolution in xylene/2-methoxyethylacetate without detachment of the sample from the slide. Our results demonstrate successful immunohistochemical labelling with primary antibodies directed against: smooth muscle actin, smooth muscle myosin, h-caldesmon, desmin, vimentin and von Willebrand factor. In conclusion, we have established a new and successful method for resin-embedded sample adhesion on glass slides. The developed protocol is feasible for investigation of cells which are involved in intimal proliferation following stent implantation.

MeSH terms

  • Glass / chemistry
  • Humans
  • Immunohistochemistry / methods*
  • Paraffin / chemistry*
  • Silicone Elastomers / chemistry*
  • Stents
  • Surface Properties
  • Umbilical Cord / cytology

Substances

  • Silicone Elastomers
  • Paraffin