Journals / Turkish Journal of Gastroenterology / 2000 / Cilt: 11 - Sayı: 4

Mide karsinomlarında p53 protein varlığı: 50 vakada immünohistokimyasal çalışma

Detection of protein p53 in gastric carcinomas: An immunohistochemical study of 50 cases

Pages
309–314
DOI
—
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Conclusions: The results of the present immunohistochemical study of p53 accumulation in gastric carcinomas suggest that gene alterations of p53 are not rare in gastric carcinomas and may participate in the carcinogenesis of intestinal type carcinomas of the stomach.

📌 3 Key Takeaways

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Objective & Hypothesis:p53 protein which is a tumor supressor gen production was investigated in 50 primary gastric carcinomas by immunohistochemical study.
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Key Findings & Data:Results: p53 immunreactivity was detected in 66 per cent (n=33) of all cases.
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Conclusion & Impact:Conclusions: The results of the present immunohistochemical study of p53 accumulation in gastric carcinomas suggest that gene alterations of p53 are not rare in gastric carcinomas and may participate in the carcinogenesis of intestinal type carcinomas of the stomach.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Gen ekspresyonu · Tanı teknikleri · sindirim sistemi

Abstract

p53 protein which is a tumor supressor gen production was investigated in 50 primary gastric carcinomas by immunohistochemical study. Results: p53 immunreactivity was detected in 66 per cent (n=33) of all cases. Abnormal p53 expression were found in 17 of the 20 (85 %) intestinal carcinomas , in 13 of the 22 (59 %) diffuse carcinomas and in 3 of the 8 (37.5 %) undifferantiated gastric carcinomas. Positive staining was not seen in normal epithelium and in epithelium with intestinal metaplasia which are near to the tumoral tissue. Ratio of positive immunostaining with p53 was higher in cases older than 50 years, in intestinal type tumors and also in tumors showing expanding type pattern and without having perineural invasion. No relation was found between p53 staining and parameters such as nuclear grade, invasion depth, lymph node invasion and sex. Conclusions: The results of the present immunohistochemical study of p53 accumulation in gastric carcinomas suggest that gene alterations of p53 are not rare in gastric carcinomas and may participate in the carcinogenesis of intestinal type carcinomas of the stomach.

Özet

Tümör supressör gen ürünü olan p53 proteini 50 primer mide karsinomunda immunohistokimyasal (İHK) olarak araştırılmıştır. Bulgular Vakaların % 66'sında (n=33) p53 immunreaktivitesi saptanmıştır. Anormal p53 ekspresyonu 20 intestinal tip karsinomun 17'sinde (%85), 22 diffuz tip karsinomun 13'ünde (%59) ve 8 indiferansiye tip mide karsinomunun 3'ünde (%37.5) bulunmuştur. Tümöre bitişik normal ve intestinal metaplazi gösteren epitelde boyanma görülmemiştir. p53, 50 yaş üzerindeki vakalarda, intestinal tip, ekspansiv yayılım gösteren ve perinöral invazyonu olmayan karsinomlarda daha yüksek oranlarda pozitif olarak boyanmıştır. Cinsiyet, histolojik grade, nüklear grade, invazyon derinliği ve lenf düğümü tutulumu gibi parametrelerle p53 pozitifliği arasında istatistiksel anlamlı ilişki bulunamamıştır. Sonuç Gastrik karsinomda p53 ekspresyonu ile ilgili yaptığımız bu çalışmanın sonucunda p53 gen değişiminin gastrik karsinomda nadir olmadığını, özellikle midenin intestinal tip karsinomunun etiyolojisinde rol oynadığını gösterir niteliktedir.

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Cite This Article

ÖZYILMAZ, F., ALTANER, Ş., KUTLU, A. K. (2000). Mide karsinomlarında p53 protein varlığı: 50 vakada immünohistokimyasal çalışma. Turkish Journal of Gastroenterology, Cilt: 11 - Sayı: 4, 309–314. https://ajindex.com/articles/411273

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