Journal
JOURNAL OF HISTOCHEMISTRY & CYTOCHEMISTRY
Volume 61, Issue 12, Pages 920-930Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1369/0022155413505600
Keywords
rapid immunocytochemistry; heat-induced antigen retrieval; kettle method; cytologic diagnosis
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Rapid immunocytochemistry (ICC) can improve the accuracy of intraoperative cytological diagnoses; however, it is usually applied without heat-induced antigen retrieval (HIAR). We established a HIAR method for rapid ICC and evaluated its efficacy and reliability. Rapidly fixed smear samples were immunostained using 35 antibodies. We compared the results of HIAR by boiling in a pot or heating in an electric kettle. The smears were incubated for 3 min with each primary antibody and immuno-enzyme polymer reagent, and for 1 min with diaminobenzidine solution. HIAR for 1 min using the kettle method yielded the best cellular integrity. For 32 out of the 35 antibodies, results achieved using rapid ICC within 11 min were comparable to that achieved using standard ICC. HIAR was essential for 13 antibodies. For two of the antibodies, HIAR was not required when standard ICC was applied, but consistent staining with rapid ICC was obtained only with HIAR. In conclusion, we established a rapid ICC procedure using a simple HIAR method, which allowed efficient immunostaining of a panel of antigens, including nuclear antigens, within only 11 min. The combined use of this rapid ICC technique with other staining techniques could be useful for improving intraoperative cytological diagnoses.
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