Journals / Türk Patoloji Dergisi / 2010 / Cilt: 26 - Sayı: 1

İlk trimester abortus materyallerinde Ki-67, Bcl-2 ve bax ekspresyonu

Expression of Ki-67, Bcl-2 and bax in the first trimester abortion materials

Pages
31–37
Publication Date
2022-11-05
DOI
—
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Bax staining showed minimal decidual expression in a few spontaneous and recurrent abortions.Conclusion: We concluded that proliferation rate was decreased in fetal villous cytotrophoblasts and maternal deciduas in spontaneous and recurrent abortions.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: The aim of this study was to investigate possible similar or different mechanisms in recurrent and spontaneous abortion by evaluating immunohistochemical correlation between proliferation marker Ki-67, and apoptosis markers Bcl-2 and Bax in the fetal trophoblasts and maternal deciduas from abortion material.Material and Method: Eighty samples of curettage materials from 65 abortion patients histopathologically diagnosed “decidua showing Arias-Stella reaction and chorionic villi” or only “decidua showing Arias-Stella reaction” were included in the study.
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Key Findings & Data:Hematoxylin&Eosin stained sections from all cases were re-evaluated and further stained immunohistochemically using antibodies against Ki-67, Bcl-2 and Bax.Results: Proliferation rate evaluated by Ki-67 expression both in the cytotrophoblastic cells and decidua was found to be significantly lower in spontaneous and recurrent abortions compared to evacuation abortion.
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Conclusion & Impact:Bax staining showed minimal decidual expression in a few spontaneous and recurrent abortions.Conclusion: We concluded that proliferation rate was decreased in fetal villous cytotrophoblasts and maternal deciduas in spontaneous and recurrent abortions.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: The aim of this study was to investigate possible similar or different mechanisms in recurrent and spontaneous abortion by evaluating immunohistochemical correlation between proliferation marker Ki-67, and apoptosis markers Bcl-2 and Bax in the fetal trophoblasts and maternal deciduas from abortion material.Material and Method: Eighty samples of curettage materials from 65 abortion patients histopathologically diagnosed “decidua showing Arias-Stella reaction and chorionic villi” or only “decidua showing Arias-Stella reaction” were included in the study. Hematoxylin&Eosin stained sections from all cases were re-evaluated and further stained immunohistochemically using antibodies against Ki-67, Bcl-2 and Bax.Results: Proliferation rate evaluated by Ki-67 expression both in the cytotrophoblastic cells and decidua was found to be significantly lower in spontaneous and recurrent abortions compared to evacuation abortion. The extent of Bcl-2 expression in syncytiotrophoblastic cells covering villous stroma was also decreased in spontaneous abortion. There were no significant differences between spontaneous and recurrent abortions in terms of Bcl-2 expression in syncytiotrophoblasts and Ki-67 proliferation index in cytotrophoblastic cells or decidua. Bax staining showed minimal decidual expression in a few spontaneous and recurrent abortions.Conclusion: We concluded that proliferation rate was decreased in fetal villous cytotrophoblasts and maternal deciduas in spontaneous and recurrent abortions. We also proposed that loss of Bcl-2 expression in syncytiotrophoblasts may cause abortion in a subset of cases. However, the data from spontaneous and recurrent abortions did not not support the presence of different mechanisms in both groups.

Özet

Amaç: Bu çalışmada, düşük materyallerinde, fötal trofoblastlar ve maternal desiduada, immünhistokimyasal olarak proliferasyon belirleyicisi (Ki-67) ve apoptoz ile ilgili belirleyiciler (Bcl-2 ve Bax) arasındaki ilişkiyi değerlendirerek, spontan ve reküran abortus olgularında benzer ya da farklı mekanizmaların varlığını araştırmayı amaçladık.Gereç ve Yöntem: Histopatolojik olarak değerlendirilen küretaj materyallerinde “Arias-Stella reaksiyonu gösteren desidua ve koryon villusları” veya “gebelik ürünü” tanısı almış 65 hastaya ait 80 doku örneği çalışmaya alındı. Olgulara ait Hematoksilen&Eozin boyalı kesitler tekrar değerlendirildi ve seçilen kesitler immünohistokimyasal olarak Ki-67, Bcl-2 ve Bax ile boyandı.Bulgular: Abortus olgularında, hem desiduada hem de koryon villuslarını döşeyen sitotrofoblastik hücrelerde Ki-67 ile değerlendirilen proliferasyon miktarı tahliye küretaj olgularından anlamlı olarak daha düşük saptandı. Abortus olgularında koryon villuslarını döşeyen sinsityotrofoblastlarda eksprese edilen Bcl-2 yaygınlığı, tahliye küretaj olgularına göre azalmış izlendi. Spontan ve rekürren abortus olguları arasında, desidua ve koryon villuslarında Ki-67 proliferasyon indeksi ya da villusları döşeyen sinsityotrofoblastlarda eksprese edilen Bcl-2 yaygınlığı arasında anlamlı farklılık saptanmadı. Bax ile az sayıda abortus olgusunda desiduada düşük düzeyde ekspresyon izlendi.Sonuç: Abortus olgularında fötal villöz sitotrofoblastlar ve maternal desidual dokularda proliferasyon oranının azaldığı sonucuna vardık. Sinsityotrofoblastlarda Bcl-2 ekspresyon kaybının bir grup olguda abortusa yol açabileceğini düşündük. Bununla birlikte, spontan ve reküran abortus olgularında elde edilen bulgular, bu iki grupta farklı mekanizmaların geçerli olabileceği görüşünü destekler nitelikte değildi.

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Cite This Article

ÖZDEMİR, N., TEREK, C., DÜZCAN, E., ZEKİOĞLU, O., KELTEN, C. (2022). İlk trimester abortus materyallerinde Ki-67, Bcl-2 ve bax ekspresyonu. Türk Patoloji Dergisi, Cilt: 26 - Sayı: 1, 31–37. https://ajindex.com/articles/640771

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