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Bcl-2 Immunoexpression as Radiotherapy Response Predictor in Undifferentiated Nasopharynx Carcinoma Damayanti, Beby S.; Afiati, .; Hassan, Abdul H.; Hernowo, Bethy S.
Journal of Medicine and Health Vol 1, No 1 (2015)
Publisher : Maranatha Christian University

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Abstract

Nasopharyngeal carcinoma (NPC) is an epithelial malignancy originating from the surface of the lateral and posterior wall of the nasopharynx. Bcl-2 is an oncoprotein that plays an important role in disrupting the process of apoptosis. Expression of Bcl-2 in biopsy samples of undifferentiated NPC also related to the nature of more aggressive tumor mass and unfavorable clinical radiotherapy response. The purpose of this study was to assess the relationship of Bcl-2 expression with radiotherapy response in undifferentiated NPC. The method of this study areusing 40 samples of paraffin blocks were diagnosed as undifferentiated NPC by histopathologic examination with H&E staining. The samples were divided into 2 groups who respond and do not respond to radiotherapy. All samples examined by Bcl-2 immunohistochemistry and the expression willanalyzed and assess therelationship to radiotherapy response. Of the 40 cases of undifferentiated NPC show imunoekspresi Bcl-2 positive in 39 cases (97.5%) and 1 case (2.5%) negative from response group. The results of statistical analysis of the Bcl-2 obtained significant results with p value <0.05 so we can conclude there is a relationship between Bcl-2 expression with radiotherapy response. Conclusion, Bcl-2 can be used as a predictor for the success of radiotherapy in undifferentiated NPC. Keywords: Bcl-2, undifferentiated NPC, radiotherapy response
Bcl-2 Immunoexpression as Radiotherapy Response Predictor in Undifferentiated Nasopharynx Carcinoma Damayanti, Beby S.; Afiati, .; Hassan, Abdul H.; Hernowo, Bethy S.
Journal of Medicine & Health Vol 1 No 1 (2015)
Publisher : Universitas Kristen Maranatha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.834 KB) | DOI: 10.28932/jmh.v1i1.494

Abstract

Nasopharyngeal carcinoma (NPC) is an epithelial malignancy originating from the surface of the lateral and posterior wall of the nasopharynx. Bcl-2 is an oncoprotein that plays an important role in disrupting the process of apoptosis. Expression of Bcl-2 in biopsy samples of undifferentiated NPC also related to the nature of more aggressive tumor mass and unfavorable clinical radiotherapy response. The purpose of this study was to assess the relationship of Bcl-2 expression with radiotherapy response in undifferentiated NPC. The method of this study areusing 40 samples of paraffin blocks were diagnosed as undifferentiated NPC by histopathologic examination with H&E staining. The samples were divided into 2 groups who respond and do not respond to radiotherapy. All samples examined by Bcl-2 immunohistochemistry and the expression willanalyzed and assess therelationship to radiotherapy response. Of the 40 cases of undifferentiated NPC show imunoekspresi Bcl-2 positive in 39 cases (97.5%) and 1 case (2.5%) negative from response group. The results of statistical analysis of the Bcl-2 obtained significant results with p value <0.05 so we can conclude there is a relationship between Bcl-2 expression with radiotherapy response. Conclusion, Bcl-2 can be used as a predictor for the success of radiotherapy in undifferentiated NPC. Keywords: Bcl-2, undifferentiated NPC, radiotherapy response
The role of cyclin D1 and vascular endothelial growth factor (VEGF) in radiotherapy response of undifferentiated nasopharyngeal carcinoma Nurhidayat, Ade Apon; Afiati, .; Usman, Hermin Aminah; Hernowo, Bethy Suryawathy
Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Vol 50, No 4 (2018)
Publisher : Journal of the Medical Sciences (Berkala Ilmu Kedokteran)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (844.579 KB) | DOI: 10.19106/JMedScie/005004201802

Abstract

Nasopharyngeal carcinoma (NPC) has a high incidence and mortality rate in SoutheastAsia included in Indonesia. Radioresistance is a major obstacle for a successful treatmentof NPC. DNA repair in the cell cycle and angiogenesis factors affect the response oftumor cells to radiotherapy. Cyclin D1 that functions in the cell cycle process and vascularendothelial growth factor (VEGF) as an angiogenesis factor are considered to play arole in the occurrence of radioresistance. The objective of this study was to evaluatethe association between cyclin D1 and VEGF expressions with radiotherapy responsein undifferentiated NPC. This study used a retrospective case control analysis design.Secondary data from medical records of patients diagnosed as undifferentiated NPC whoreceived a complete radiotherapy at the Department of Radiation Oncology, Dr. HasanSadikin General Hospital, Bandung. There were 44 samples divided into radiosensitive(22 samples) and radioresistant (22 samples) groups. Immunohistochemical examinationof cyclin D1 and VEGF expressions was performed on paraffin blocks of patients?nasopharyngeal biopsy. Data analysis used Chi-Square test with p ?0.05. Cyclin D1 wasexpressed strongly in 86.4% of the radioresistant group and 59.1% in the radiosensitivegroup (p<0.05), VEGF was strongly expressed in 77.3% of the radioresistant group and54.5% in the radiosensitive group (p>0.05). In conclusion, there is significant associationbetween cyclin D1 expression with radiotherapy response in undifferentiated NPC.However, there is no association between VEGF expression with radiotherapy response.