Abdul Hadi Hassan, Abdul Hadi
Department of Pathology Anatomy Faculty of Medicine Universitas Padjadjaran/Dr. Hasan Sadikin General Hospital Bandung

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Journal : Majalah Kedokteran Bandung

Hubungan BRAF V600E dan EGFR dengan Metastasis ke Kelenjar Getah Bening pada Adenokarsinoma Kolorektal Ariyanni, Fenny; Hassan, Abdul Hadi; Hernowo, Bethy S.
Majalah Kedokteran Bandung Vol 47, No 3 (2015)
Publisher : Faculty of Medicine, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1628.075 KB)

Abstract

Adenokarsinoma kolorektal adalah tumor ganas epitel kolorektal yang berdiferensiasi kelenjar. Metastasis ke kelenjar getah bening sangat memengaruhi prognosis dan penatalaksanaan penderita karsinoma kolorektal. Penelitian ini untuk mengetahui hubungan BRAF V600E dan EGFR dengan metastasis ke kelenjar getah bening. Disain penelitian potong lintang analisis kategorik tidak berpasangan terhadap kasus adenokarsinoma kolorektal yang dipilih secara konsekutif dari blok parafin massa tumor yang dilakukan pemeriksaan imunohistokimia BRAF V600E dan EGFR di Departemen Patologi Anatomi Fakultas Kedokteran Universitas Padjadjaran/RSUP Dr. Hasan Sadikin Bandung pada bulan Februari sampai Juni 2014. Hasil penelitian menunjukkan tidak terdapat hubungan antara imunoekspresi BRAF V600E positif dan metastasis ke kelenjar getah bening dengan p=0,269 (uji chi-kuadrat) dan imunoekspresi EGFR yang positif dengan metastasis ke kelenjar getah bening dengan p=0,713 (uji chi-kuadrat). Imunoekspresi BRAF V600E dan EGFR yang positif tidak berhubungan dengan metastasis ke kelenjar getah bening, p=0,427 (Uji Fisher Exact). BRAF dan EGFR berperan pada epithelial mesencymal transition sehingga sel mampu bermigrasi, tetapi kemampuan migrasi ini tidak berperan pada kejadian metastasis tumor adenokarsinoma kolorektal ke kelenjar getah bening. Simpulan, imunoekspresi BRAF V600E dan EGFR pada adenokarsinoma kolorektal tidak dapat digunakan sebagai petanda agresivitas tumor adenokarsinoma kolorektal. [MKB. 2015;47(3):179–85]Kata kunci: Adenokarsinoma, BRAF V600E, EGFR, kelenjar getah bening, kolorektalAssociation of BRAF V600E and EGFR with Lymph Nodes Metastasis in Colorectal AdenocarcinomaAbstractColorectal adenocarcinoma is an epithelial malignant tumor with glandular differentiation. Lymph node metastasize affects the prognosis and management of colorectal carcinoma patients. In this study, association of BRAF V600E and EGFR with metastasis of the lymph nodes was investigated. This was a cross sectional study with unpaired categorical analysis of colorectal adenocarcinoma obtained from archival paraffin blocks from consecutively selected samples. The blocks were stained by BRAF V600E and EGFR antibody at the Department of Anatomical Pathology, Faculty of MedicineUniversitas Padjadjaran/Dr. Hasan Sadikin General Hospital during the period of February to June 2014. There was no association between positive BRAF V600E immunoexpression  and lymph node metastasis, p=0.269 (p>0.05, chi-square test). Similarly, there was no association between positive EGFR immunoexpression and lymph node metastasis, p=0.713 (p>0.05, chi-square test). Positive BRAF V600E immunoexpresion and positive EGFR immunoexpression also had no association with lymph node metastasis, p=0.427 (Fisher Exact test). BRAF and EGFR may play a role in the epithelial mesencymal transition to increase cell migration and invasion. However, in colorectal adenocarcinoma, BRAF V600E and EGFR were not associated with lymph node metastasis. In conclusions, positive BRAF V600E immunoexpression and positive EGFR immunoexpression in colorectal adenocarcinoma should not be used as markers formetastazing potentials of colorectal adenocarcinoma tumors. [MKB. 2015;47(3):179–85]Key words: Adenocarcinoma, BRAF V600E, colorectal, EGFR, lymph node DOI: 10.15395/mkb.v47n3.600
Korelasi Ekspresi Reseptor Vitamin D (VDR) dengan Derajat Diferensiasi dan Stadium Adenokarsinoma Kolorektal Usman, Hermin Aminah; Erida, Yulie; Yulianti, Herry; Hassan, Abdul Hadi
Majalah Kedokteran Bandung Vol 48, No 2 (2016)
Publisher : Faculty of Medicine, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.125 KB) | DOI: 10.15395/mkb.v48n2.387

Abstract

Keganasan terbanyak ketiga di dunia pada organ kolorektal adalah karsinoma yang berasal dari lapisan epitel mukosa. Modalitas yang digunakan untuk terapi karsinoma kolorektal stadium lanjut selain operasi adalah kemoterapi dan saat ini dikembangkan terapi target sebagai alternatif terapi, yaitu metabolit aktif vitamin D, calcitriol. Calcitriol bekerja sinergis dengan agen kemoterapi yang aktivitasnya dimediasi oleh vitamin D reseptor (VDR). Penelitian ini bertujuan mengetahui korelasi imunoekspresi VDR dengan stadium dan derajat diferensiasi (grading) pada adenokarsinoma kolorektal. Menggunakan 35 blok parafin adenokarsinoma kolorektal yang diambil dari kolektomi, di Departemen Patologi Anatomi Rumah Sakit Dr. Hasan Sadikin Bandung periode 1 Januari 2009–30 Juni 2014, terbagi dalam 3 kelompok stadium (I, II, dan III) dan 3 kelompok derajat diferensiasi (well, moderately, dan poorly differentiated). Imunohistokimia dilakukan pada sampel untuk melihat ekspresi VDR pada massa tumor menggunakan antibodiprimer VDR. Data dianalisis menggunakan uji statistika korelasi Rank Spearman. Terdapat korelasi imunoekspresi VDR dengan stadium (p=0,045; R=-0,341) dan derajat diferensiasi (p=0,000; R=0,558). Pada penelitian ini VDR berperan dalam menentukan stadium dan derajat diferensiasi adenokarsinoma kolorektal. Hal ini dapat dijadikan pertimbangan dalam pemberian calcitriol sebagai bagian dari terapi target pada adenokarsinoma kolorektal dan acuan untuk penelitian selanjutnya dalam perkembangan terapi target. [MKB. 2016;48(2):123–8]Kata kunci: Adenokarsinoma kolorektal, derajat diferensiasi, stadium, imunoekspresi VDRCorrelation of Vitamin D Receptor (VDR) Expression with Differentiation Staging and Grading in Colorectal AdenocarcinomaColorectal carcinoma (CRC) is a malignancy from mucosal epithelium of the colon/rectum. The treatment modalities used for advance stage colorectal carcinoma therapy is chemotherapy, in addition to surgery. Targeted therapy is currently being developed as an alternative therapy. One of the agents used in this therapy is calcitriol. Calcitriol is an active metabolite of vitamin D. Calcitriol works synergistically with chemotherapeutic agents and its activity is mediated by the vitamin D receptor (VDR). VDR plays a role in the inhibition of tumor progression via induction of cellular differentiation and proliferation inhibition. In this study, imunoexpression of vitamin D receptor was examined in conjunction with the staging and degree of differentiation (grading) of colorectal adenocarcinoma. The study objects include 35 colorectal adenocarcinoma paraffin blocks created from colectomy which were collected at the Department of Patology Anatomic of Dr. Hasan Sadikin General Hospital Bandung from January 2009–June 2014. The blocks were divided into three groups of staging (I, II, and III) and  three groups of grading: well, moderately, and poorly differentiated. Immunostaining was used to evaluate the VDR immunoexspression by histo-score. The data were tested using rank spearman test. There was a weak negative correlation between VDR imunoexpression and staging(p=0.045, R=-0.341), and a moderate positive correlation between VDR imunoexpression and grading (p=0.000, R=0.558). It is concluded that a significant correlation of VDR imunoexpression with staging and grading of colorectal adenocarcinoma is found and this finding can be used as a reference for further studies in the development of targeted therapies. [MKB. 2016;48(2):123–8]Key words: Adenocarcinoma colorectal, grading, staging, VDR imunoexpression