Advances in Clinical and Experimental Medicine
2009, vol. 18, nr 1, January-February, p. 25–31
Publication type: original article
Language: English
The Prognostic Value of Cyclin D1 Expression in Resected Non−Small−Cell Lung Cancer of Stages I–IIIA – Preliminary Report
Próba oceny prognostycznego znaczenia ekspresji cykliny D1 w operowanym niedrobnokomórkowym raku płuca w stadium I–IIIA – doniesienie wstępne
1 Chair and Department of Pulmonology and Lung Cancer, Wroclaw Medical University, Poland
Abstract
Background. Lung cancer is the leading cause of cancer death in the majority of developed counties and in Poland. Cyclin D1 regulates the G1−to−S phase transition and its gene is located on chromosome 11q13.
Objectives. The aim of this study was to evaluate the prognostic significance of cyclin D1 expression in primary resected stage I–IIIA non−small−cell lung cancer (NSCLC).
Material and Methods. The expression of cyclin D1 in paraffin−embedded tumor tissue from 71 patients (53 men and 18 women, mean age: 59.27 ± 8.50 years) was measured using a monoclonal antibody to cyclin D1 (NCL−L−Cyclin D1−Gm clone P2D11F11, Novocastra).
Results. Forty−one (58%) tumor tissue specimens were positive for cyclin D1. Two distinct patterns of staining were observed, but cytoplasmic staining were found in the majority of cases. The prognostic value of cyclin D1 expression was analyzed in all the examined patients and separately in patients with squamous cell lung cancer and adenocarcinoma and for each stage, but only in stage II was there negative correlation between cyclin D1 expression and survival.
Conclusion. Expression of cyclin D1 could be negative prognostic factor in some patients with resected nonsmall−cell lung cancer.
Streszczenie
Wprowadzenie. Rak płuca jest główną przyczyną zgonów z powodu chorób nowotworowych w większości rozwiniętych krajów i w Polsce. Cyklina D1 bierze udział w regulacji fazy G1−S cyklu komórkowego, a jej gen jest umiejscowiony na chromosomie 11q13.
Cel pracy. Próba oceny znaczenia prognostycznego ekspresji cykliny D1 w operowanym niedrobnokomórkowym raku płuca – stadium I–IIIA.
Materiał i metody. Metodą immunohistochemiczną przeprowadzono badanie preparatów guza utrwalonych w parafinie pobranego od 71 pacjentów (w tym 53 mężczyzn i 18 kobiet, średni wiek 59,27 + 8,50). Użyto przeciwciała monoklonalnego przeciw cyklinie D1: NCL−L−Cyclin D1−Gm clone P2D11F11 novocastra.
Wyniki. W 51 preparatach (58%) stwierdzono ekspresję cykliny D1, w większości przypadków była to reakcja cytoplazmatyczna. Analizowano prognostyczne znaczenie ekspresji cykliny D1 w całej badanej grupie, a następnie u chorych na raka płaskonabłonkowego i na gruczolakoraka, a także w poszczególnych stadiach zaawansowania. Stwierdzono jedynie ujemną korelację między ekspresją cykliny D1 a przeżyciem w stadium II. Wnioski: Ekspresja cykliny D1 może być niekorzystnym czynnikiem rokowniczym u części chorych leczonych operacyjnie z powodu niedrobnokomórkowego raka płuca.
Key words
cyclin D1, non−small−cell lung cancer, squamous cell lung cancer, adenocarcinoma, prognostic factor
Słowa kluczowe
cyklina D1, niedrobnokomórkowy rak płuca, rak płaskonabłonkowy, gruczolakorak, czynnik prognostyczny
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