Her-2/Neu, estrogen and progesterone receptor expression in WHO Grade I meningiomas

Amaç: Meningiomlar genellikle benign davranış gösteren, sıklıkla progesteron reseptörü (PR), seyrek olarak da östrojen reseptörü (ER) eksprese eden santral sinir sistemi neoplazileridir. Meningiomlarda Her-2/neu ekspresyonunun önemi henüz aydınlatılamamıştır. Bu çalışmada, WHO grade I meningiomlarda Her-2/neu, PR ve ER ekspresyonları ile klinikopatolojik parametreler arasındaki ilişki araştırıldı. Hastalar ve Yöntemler: Çalışmaya toplam 53 meningiom olgusu dahil edildi. Formalinde fikse edilen, parafine gömülmüş doku kesitlerinde Her-2/neu, PR ve ER immünboyaması gerçekleştirildi. Bulgular: Meningiomların 27'sinde (%50.9) PR pozitivitesi saptanırken, ER ile reaksiyon saptanmadı. On iki olguda (%22.6) Her-2/neu overekspresyonu belirlendi. Her-2/neu ile PR ekspresyonu arasında pozitif korelasyon saptandı (p=0.015). Her-2/neu ekspresyonu meningotelyal tipte daha sık olarak izlendi (p=0.03). Her-2/neu, ER, PR ve diğer klinikopatolojik parametreler arasında ilişki saptanmadı. Sonuç: Çalışmamızın sonuçları grade I meningiomlarda PR ekspresyonunun sıklığına karşın, ER ekspresyonunun nadir bir bulgu olduğunu gösterdi. Ek olarak, Her-2/ neu ekspresyonunun PR pozitif ve meningotelyal tipte daha sık görüldüğü saptandı.

WHO grade I meningiomlarda her-2/Neu, östrojen ve progesteron reseptör ekspresyonu

Objectives: Meningiomas are generally benign central nervous system neoplasms, which frequently express progesterone receptor (PR) and rarely express the estrogen receptor (ER). The significance of Her-2/neu expression in meningiomas is unclear. We evaluated the correlation with Her-2/neu, PR, ER expressions and clinicopathologic parameters in World Health Organization (WHO) Grade I meningiomas. Patients and Methods: In total, 53 cases of meningiomas were included in this study. Formaline-fixed, paraffin-embedded tissue sections were immunostained for Her-2/neu, PR and ER. Results: Whereas 27 (50.9%) of meningiomas were positive for PR, no reaction was determined for ER. Her-2/neu overexpression was observed in 12 (22.6%) cases. There was positive correlation between Her-2/ neu and PR expressions (p=0.015). Her-2/neu expression was frequently seen in meningothelial type (p=0.03). There were no correlations with Her-2/neu, ER, PR and other clinicopathologic parameters. Conclusion: The results of our study show that despite there being PR expression at a high rate in grade I meningiomas, ER expression is a rare finding. Moreover, Her-2/neu expression has been detected more often in the PR positive and meningothelial type.

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