Cyclo-oxygenase-2 expression in photon-radiated and non-radiated uveal melanomas.
Acta Ophthalmol
; 88(5): 582-7, 2010 Aug.
Article
en En
| MEDLINE
| ID: mdl-19432844
ABSTRACT
PURPOSE:
To determine and compare cyclo-oxygenase-2 (COX-2) expression in photon-radiated and non-radiated malignant uveal melanomas and to analyse the correlation between COX-2 expression and prognosis.METHODS:
Immunohistochemical staining for COX-2 was performed on 21 uveal melanomas that were endoresected after prior stereotactic radiotherapy with photons and on 22 tumours that were treated by endoresection without prior radiotherapy. COX-2 staining was further analysed in respect to cell type, maximal prominence, time interval between radiotherapy and surgery, apoptotic index (AI), proliferative index (PI) and the development of metastatic disease.RESULTS:
There was no difference in COX-2 expression between radiated and non-radiated melanomas (P>0.15). COX-2 staining correlated with neither the tumour prominence (P>0.40) nor the AI or the PI (both P>0.35). Tumours with high COX-2 expression were significantly more likely to develop metastasis (P=0.022).CONCLUSION:
Radiotherapy with photons does not induce COX-2 expression in malignant melanomas of the uvea. But high COX-2 expression may be a marker for poor prognosis.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Úvea
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Ciclooxigenasa 2
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Melanoma
Tipo de estudio:
Prognostic_studies
Límite:
Adolescent
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Adult
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Aged
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Acta Ophthalmol
Asunto de la revista:
OFTALMOLOGIA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Alemania