Research Article
BibTex RIS Cite

Parafin Kesitlere Uygulanan İmmünohistokimyasal Boyamada Protein Blokajı Sonrası Yıkama Yapılmasının Sonuca Etkisi

Year 2023, Volume: 7 Issue: 3, 325 - 330, 31.12.2023
https://doi.org/10.29058/mjwbs.1337146

Abstract

Amaç: İmmünohistokimya, proteinleri dokuda bulundukları yerde gösterebilmesi nedeniyle gerek tanısal
gerek ise deneysel çalışmalarda günümüzde halen sıklıkla tercih edilmektedir. İmmünohistokimyada
temel problemlerden biri de, protein bloklama yapılarak önlenebilen ve antijenik benzerlik nedeniyle
doku proteinlerine ve dokudaki Fc reseptörlerine primer antikorların bağlanması sonucu ortaya çıkan zemin boyanmasıdır. Güncel yayınlarda ve üreticiler tarafından yayımlanan immünohistokimya el kitaplarında protein bloklama sonrası
yıkama yapılıp yapılmaması konusunda fikir birliği yoktur.
Gereç ve Yöntemler: Çalışmamızda etanol ile deneysel mide ülseri modeli oluşturulmuş sıçan mide doku örneklerinden elde edilen 5
μm kalınlığındaki kesitlere TNF-α ifadesini belirlemek amacıyla rutin immünohistokimya prosedürü uygulanmış ve her grupta kesit sayısı
10 olacak şekilde protein bloklama sonrası yıkama yapılan ve yapılmayan iki grup oluşturulmuştur. Her iki grubun immünohistokimyasal
yöntemle boyanmış preparatlarından elde edilen görseller üzerinden semikantitatif değerlendirme amacıyla histolojik skor (h-skoru)
çıkarılmış ve elde edilen veriler istatistiksel olarak karşılaştırılmıştır.
Bulgular: Çalışmamızın sonucunda immünohistokimyasal boyamada protein bloklama sonrası yıkama yapılan grup ile yıkama yapılmayan
grupların h-skor değerleri arasında istatistiksel olarak anlamlı fark bulunmamıştır (p=0,971). Yıkama yapılan ve yapılmayan gruplara ait
medyan (min-maks) değerleri sırasıyla 211 (179-244) ve 215 (171-251)’dir.
Sonuç: İmmünohistokimyasal boyama prosedüründe protein bloklama sonrası yıkama yapılması zemin boyanması oluşturmamakta ve
semikantitatif değerlendirme için yapılan h-skoru sonucunu etkilememektedir. Diğer doku tipleri ve antijenler için de benzer çalışmalar
yapılması önerilmektedir.

References

  • 1. Ramos-Vara, J. A., Kiupel, M., Baszler, T., Bliven, L., Brodersen, B., Chelack, B., Czub, S., Del Piero, F., Dial, S., Ehrhart, E. J., Graham, T., Manning, L., Paulsen, D., Valli, V. E., West, K., & American Association of Veterinary Laboratory Diagnosticians Subcommittee on Standardization of Immunohistochemistry (2008). Suggested guidelines for immunohistochemical techniques in veterinary diagnostic laboratories. Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc, 20(4), 393–413.
  • 2. PC Goodwin et al., Microscopy, Immuno-Histochemistry, Digital Imaging, and Quantitative Microscopy (2017) in Comparative Anatomy and Histology, PM Treuting et al., eds., Academic Press, 2017.
  • 3. Sukswai, N., & Khoury, J. D. (2019). Immunohistochemistry Innovations for Diagnosis and Tissue-Based Biomarker Detection. Current hematologic malignancy reports, 14(5), 368–375.
  • 4. Buchwalow, I., Samoilova, V., Boecker, W., & Tiemann, M. (2011). Non-specific binding of antibodies in immunohistochemistry: fallacies and facts. Scientific reports, 1, 28.

The Effect of Washing After Protein Blocking on Immunohistochemical Staining Applied to Paraffin Sections

Year 2023, Volume: 7 Issue: 3, 325 - 330, 31.12.2023
https://doi.org/10.29058/mjwbs.1337146

Abstract

Aim: Immunohistochemistry is still frequently preferred in both diagnostic and experimental studies
because it can show proteins where they are in the tissue. One of the main problems in immunohistochemistry
is the background staining, which can be prevented by protein blocking and which occurs as
a result of binding of primary antibodies to tissue proteins and Fc receptors in the tissue due to antigenic
similarity. There is no consensus on whether to wash after protein blocking in current publications and
immunohistochemistry manuals published by manufacturers.
Material and Methods: In our study, routine immunohistochemistry procedure was applied to determine
the expression of TNF-α on 5 μm thick sections obtained from rat gastric tissue samples in which an
experimental gastric ulcer model was created with ethanol, and two groups were formed, with and without
washing after protein blocking, with 10 sections in each group. For semi-quantitative evaluation, the
histological score (h-score) was calculated from the images obtained from the immunohistochemically
stained preparations of both groups and the obtained data were statistically compared.
Results: As a result of our study, no statistically significant difference was found between the h-score
values of the groups that were washed after protein blocking in immunohistochemical staining and
the groups that did not wash (p=0.971). The median (min-max) values of the groups with and without
washing are 211 (179-244) and 215 (171-251), respectively.
Conclusion: In the immunohistochemical staining procedure, washing after protein blocking does not
change the staining intensity, does not create background staining, and does not affect the result of
the h-score for semiquantitative evaluation. Similar studies are recommended for other species, tissue
types and antigens.

Supporting Institution

yok/none

References

  • 1. Ramos-Vara, J. A., Kiupel, M., Baszler, T., Bliven, L., Brodersen, B., Chelack, B., Czub, S., Del Piero, F., Dial, S., Ehrhart, E. J., Graham, T., Manning, L., Paulsen, D., Valli, V. E., West, K., & American Association of Veterinary Laboratory Diagnosticians Subcommittee on Standardization of Immunohistochemistry (2008). Suggested guidelines for immunohistochemical techniques in veterinary diagnostic laboratories. Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc, 20(4), 393–413.
  • 2. PC Goodwin et al., Microscopy, Immuno-Histochemistry, Digital Imaging, and Quantitative Microscopy (2017) in Comparative Anatomy and Histology, PM Treuting et al., eds., Academic Press, 2017.
  • 3. Sukswai, N., & Khoury, J. D. (2019). Immunohistochemistry Innovations for Diagnosis and Tissue-Based Biomarker Detection. Current hematologic malignancy reports, 14(5), 368–375.
  • 4. Buchwalow, I., Samoilova, V., Boecker, W., & Tiemann, M. (2011). Non-specific binding of antibodies in immunohistochemistry: fallacies and facts. Scientific reports, 1, 28.
There are 4 citations in total.

Details

Primary Language English
Subjects Pathology
Journal Section Research Article
Authors

Mete Keçeci 0000-0002-2144-4730

Elif Koca 0009-0001-0358-422X

Esra Arslan 0009-0001-2008-8463

Reyyan Başak Denek 0009-0007-1170-562X

Ezgi Su Sarı 0009-0002-1523-6684

İpek Pınar Akpınar 0009-0002-1204-5874

Bünyamin Ülker 0009-0007-7241-1211

Kağan Atıcı 0009-0004-9536-9202

Özgenur Erbakan 0009-0007-1088-9447

Osman Cengil 0000-0002-0702-6751

Publication Date December 31, 2023
Acceptance Date October 19, 2023
Published in Issue Year 2023 Volume: 7 Issue: 3

Cite

Vancouver Keçeci M, Koca E, Arslan E, Denek RB, Sarı ES, Akpınar İP, Ülker B, Atıcı K, Erbakan Ö, Cengil O. The Effect of Washing After Protein Blocking on Immunohistochemical Staining Applied to Paraffin Sections. Med J West Black Sea. 2023;7(3):325-30.

Medical Journal of Western Black Sea is a scientific publication of Zonguldak Bulent Ecevit University Faculty of Medicine.

This is a refereed journal, which aims at achieving free knowledge to the national and international organizations and individuals related to medical sciences in publishedand electronic forms.

This journal is published three annually in April, August and December.
The publication language of the journal is Turkish and English.