Journals / Türk Patoloji Dergisi / 2011 / Cilt: 27 - Sayı: 1

Periampuller karsinomlarda p16 ve siklin d1 ekspresyonu

Expression of p16 protein and cyclin D1 in periampullary carcinomas

Pages
17–22
Publication Date
2022-11-05
DOI
—
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⚡ TL;DR(Too Long; Didn't Read)

No significant difference was observed between tumor groups for Cyclin D1 (p>0.05).Conclusion: The results suggest that loss of p16 protein expression may be a sign for poor prognosis in periampullary cancers that is correlated mainly with perineural invasion.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: The majority of the tumors in periampullary region are pancreatic and ampulla of Vater carcinomas.
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Key Findings & Data:The aim of this study was to compare histopathological features of ampulla of Vater carcinomas with pancreatic ductal adenocarcinomas and to determine diagnostic and predictive values of p16 protein and cyclin D1 expression.Material and Method: Tissue samples from pancreatic ductal adenocarcinomas and ampulla of Vater carcinomas were obtained from 31 patients who underwent pancreticoduodenectomy for periampullary carcinoma.
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Conclusion & Impact:No significant difference was observed between tumor groups for Cyclin D1 (p>0.05).Conclusion: The results suggest that loss of p16 protein expression may be a sign for poor prognosis in periampullary cancers that is correlated mainly with perineural invasion.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: The majority of the tumors in periampullary region are pancreatic and ampulla of Vater carcinomas. The aim of this study was to compare histopathological features of ampulla of Vater carcinomas with pancreatic ductal adenocarcinomas and to determine diagnostic and predictive values of p16 protein and cyclin D1 expression.Material and Method: Tissue samples from pancreatic ductal adenocarcinomas and ampulla of Vater carcinomas were obtained from 31 patients who underwent pancreticoduodenectomy for periampullary carcinoma. The study group was composed of 12 women and 19 men. Their median age was found to be 62.32 years (range 26-85 years). The parameters analyzed in the study included lymph node metastases, perineural invasion, differentiation, duodenal invasion, grade of intraepithelial neoplasia and p16 and cyclinD1 expression in tumoral and peritumoral pancreatic tissues.Results: In both tumor groups, the loss of p16 protein expression was significantly correlated with perineural invasion (p=0.0001). Perineural invasion was more frequent in the pancreatic ductal adenocarcinoma group than the ampulla of Vater carcinoma group (p=0,01). When desmoplasia and lymphoplasmacytic stromal infiltration were examined, desmoplastic reaction was significantly higher in pancreatic ductal adenocarcinomas than ampulla of Vater carcinomas (p=0.01). No significant difference was observed between tumor groups for Cyclin D1 (p>0.05).Conclusion: The results suggest that loss of p16 protein expression may be a sign for poor prognosis in periampullary cancers that is correlated mainly with perineural invasion. Desmoplastic stromal reaction may be a distinctive feature for pancreatic ductal adenocarcinoma compared with ampulla of Vater carcinoma.

Özet

Amaç: Periampuller bölgedeki tümörlerin çoğunluğu pankreatik ve ampulla Vater karsinomlarıdır. Bu çalışmanın amacı, pankreatik duktal adenokarsinomlar ile ampulla Vater karsinomlarının histopatolojik özelliklerini karşılaştırmak ve p16 ve siklinD1 ekspresyonunun tanısal ve prediktif değerini tespit etmektir.Gereç ve Yöntem: Pankreatik duktal adenokarsinom ve ampulla Vater karsinomlarına ait doku örnekleri periampuller karsinoma tanısı ile pankreatikoduodenektomi yapılan 31 hastadan elde edildi. Hasta grubu 12 kadın ve 19 erkekten oluşmaktaydı. Ortalama yaş 62,32 (26-85 yaş arası) olarak saptandı. Tümöral ve peritümöral pankreatik dokuda lenf düğümü metastazı, perinöral invazyon, diferansiyasyon, duodenal invazyon, intraepitelyal neoplazi derecesi ve p16 ve siklin D1 ekspresyonunu içeren parametreler analiz edildi.Bulgular: p16 protein ekspresyon kaybı, her iki tümör grubunda perinöral invazyon ile anlamlı şekilde korele idi (p=0,0001). Pankreatik duktal adenokarsinomlar grubunda perinöral invazyona, ampulla Vateri karsinomları grubuna göre daha sık rastlandı. (p=0,01). Desmoplastik reaksiyon bulgusu, pankreatik duktal adenokarsinomlarda ampulla Vater karsinomlarına göre daha anlamlı saptandı (p=0,01). Siklin D1 için gruplar arasında anlamlı farklılık bulunmadı (p>0,05).Sonuç: Bu bulgular, perinöral invazyonla korele olan p16 protein ekspresyon kaybının, periampuller kanserlerde kötü prognoz göstergesi olabileceğini düşündürmektedir. Desmoplastik stromal reaksiyon pankreatik duktal adenokarsinomda ampulla Vater karsinomu ile kıyaslandığında ayırıcı tanı için ayırd ettirici özellik olabilir.

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Cite This Article

TÜRK, Ş. N., ARICI, S., DEMİRKAN, Ç. N., TUNCER, E., DÜZCAN, S. E. (2022). Periampuller karsinomlarda p16 ve siklin d1 ekspresyonu. Türk Patoloji Dergisi, Cilt: 27 - Sayı: 1, 17–22. https://ajindex.com/articles/640728

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