4. Hrvatski kongres kliniËke citologije 4th Croatian Congress ... - Penta
4. Hrvatski kongres kliniËke citologije 4th Croatian Congress ... - Penta
4. Hrvatski kongres kliniËke citologije 4th Croatian Congress ... - Penta
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Cytotechnology - Oral Presentations<br />
PROBLEMS WITH STAINING PROCEDURES IN IMMUNOCYTOCHEMISTRY<br />
Meandžija R1 , Fumić G1 , Naglić G1 , Štanfel O2 , Seili-Bekafigo I1 1Department of Cytology, Department of Internal Medicine, Clinical Hospital Center<br />
Rijeka, Croatia<br />
2 Rijeka University School of Medicine, Department of Pathology, Rijeka, Croatia<br />
Aim: To identify weaknesses of immunocytochemistry (ICK) staining procedures, and to<br />
propose solutions for some of them, since data in the literature are very scarce on that<br />
subject. Material and methods: During 3 years period in The Department for Cytology,<br />
Department of Internal Medicine, Clinical Hospital Center Rijeka, we performed totally<br />
475 ICK analyses for 151 patients, mean 3,15 per patient. Most monoclonal antibodies<br />
used (Ber-ep4, CD3, CD20, Calretinin) react with membrane-bound antigenes, so any<br />
kind of pretreatment was not applied. We also tried to show TTF positivity in primary<br />
lung tumors, with and without pretreatment with TRIS- EDTA puffer on 96-97oC. Results:<br />
Staining for membrane-bound antigenes, gave good results using standard protocols<br />
recommended by manufacturer. The best results were obtained when using special<br />
Polysine slides. After pretreatment we got positive reaction with the nuclear antigen TTF<br />
as well. Conclusion: ICK is a powerfull diagnostic tool, but the staining procedure itself<br />
has to be precisely defined and standardized. The most important problems are: quality<br />
of particular slides (we do not know in advance if there are enough well preserved cells<br />
on each given slide), maintaining of the specimen on the slide during staining procedure<br />
if standard slides are used, correct determination of dillution and incubation period for<br />
each monoclonal antibody, revealing of the nuclear antigenes without interfering with<br />
specimen quality, and lack of control slides. There is a lot of work to be done in this field,<br />
regarding standardization and quality control.<br />
rmeandzija@net.hr<br />
177<br />
4 th <strong>Croatian</strong> <strong>Congress</strong> of Clinical Cytology / 1 st <strong>Croatian</strong> Symposium of Analytical Cytology / 2 nd <strong>Croatian</strong> Symposium of Cytotechnology