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A new rapid immunohistochemical staining technique using the EnVision antibody complex
U Kämmerer1, M Kapp, A M Gassel
1Department of Obstetrics and Gynecology, University of Wuerzburg, Josef-Schneider Str. 4, D-97080 Wuerzburg, Germany. frak057@mail.uni-wuerzburg.de
Summary
This study adapted the EnVision system for rapid immunohistochemical staining of frozen sections. The modified method successfully detected numerous antigens in under 13 minutes, offering a valuable tool for intraoperative diagnosis.
Area of Science:
- Histopathology
- Immunohistochemistry
- Molecular Pathology
Background:
- Intraoperative frozen section diagnosis benefits from rapid immunohistochemical techniques.
- The EnVision system is a highly sensitive, two-step immunohistochemical method.
Purpose of the Study:
- To investigate the modification of the EnVision system for rapid immunostaining of frozen sections.
- To assess the utility of this modified technique for intraoperative diagnosis.
Main Methods:
- Tested 45 primary antibodies on frozen tissue sections.
- Utilized a modified EnVision protocol with short incubation times (1 min fixation, 3 min antibody, 3 min EnVision complex, 3 min chromogen) at 37°C.
- Employed acetone fixation and air-drying prior to immunostaining.
Main Results:
- Achieved specific staining with 38 out of 45 antibodies tested.
- Demonstrated successful detection of various antigens including HMB-45, keratin, vimentin, and CD markers.
- Completed the entire immunostaining process in less than 13 minutes.
Conclusions:
- A modified EnVision method enables rapid immunohistochemical detection of a wide range of antigens in frozen sections.
- This technique is a potentially valuable new tool for frozen section diagnosis and research.
- The speed and sensitivity of the modified EnVision system enhance intraoperative diagnostic capabilities.