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J Korean Cancer Assoc > Volume 27(6); 1995 > Article
Journal of the Korean Cancer Association 1995;27(6): 1017-1030.
성인 급성 백혈병에서 MDR 1 mRNA 유전자의 발현
김형준, 정익주, 서재성, 최경상, 박무림, 백광우, 배열
Multidrug Resistance ( MDR 1 ) Gene Expression in Adult Acute Leukemia : Espression of P-glycoprotein and MDR 1 mRNA and its implication on clinical outcome in adult
Hyeoung Joon Kim, Ik Joo Chung, Jae Sung Seo, Keyong Sang Choi, Moo Rim Park, Kang Woo Baek, Youl Bae
Resistance to multiple chemotherapeutic agents is mainly related to the production of P- glycoproteins, a transmembrane drug efflux pump that is encoded by the multidrug resistance(MDR) gene, MDR I. To investigate whether MDR 1 could be involved in clinical resistance to chemotherapy in adult acute leukemias, We have analyzed prospectively 39 samples from 32 patients(27 at presentation, 5 after relapse) with acute leukemia for the evaluation of overexpression of MDR 1 mRNA and P-glycoprotein by using polymerase chain reactions(PCR) and flow cytometric assay, respectively. The induction rate of first complete remission differed between MDR 1 mRNA-positive and negative groups(37% v 84%, respectively; p=0.02). The survival rate(Kaplan-Meier method) in MDR 1 mRNA negative group was significantly higher than that in MDR 1 mRNA positive group(p=0.02). These results suggest that PCR assay of MDR 1 mRNA is a convenient method to detect expression of MDR 1 gene, and it may be a prognostic factor in the treatment of acute leukemia.
Key words: Acute leukemia, MDR 1 mRNA, P-glycoprotein
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