A Case of Coexistence of Bone Marrow-involved Refractory Marginal Zone B-Cell Lymphoma and Therapy-related Myelodysplastic Syndrome

Recent advances in chemotherapy have led to increased survival rates for patients with hematologic malignancies. However, standard chemotherapies, including alkylating agents for non-Hodgkin lymphoma, could induce therapy-related myeloid neoplasms (t-MNs), a group of disorders categorized by the World Health Organization in 2008. Here, we report a case of coexistence of bone marrow (BM)-involved refractory marginal zone B-cell lymphoma (MZL) and therapy-related myelodysplastic syndrome (t-MDS). Simultaneous presence of refractory lymphoma and t-MN in the BM is rare, and this is the first report in Korea. The patient received allogeneic hematopoietic stem cell transplantation (HSCT) to cure both the MZL and t-MDS. Since the HSCT, he has been stable for 21 months without any evidence of recurrence.

EC-18, a Synthetic Monoacetyldiacylglyceride, Inhibits Hematogenous Metastasis of KIGB-5 Biliary Cancer Cell in Hamster Model

EC-18 (monoacetyldiacylglyceride) stimulates T cell production of IL-2, IL-4, IL-12, IFN-gamma, and GM-CSF in vitro. To study the effects of these cytokines stimulated by EC-18 on cancer cells, we applied hamster biliary cancer model, a difficult cancer to treat. Cancer (KIGB-5) cells were given intravenously to produce hematogenous metastatic lung lesions which were treated with EC-18 at 10, 25, and 50 mg/kg/day respectively. The fourth group was untreated control. At 4th, 8th, and 12th week the lungs were examined. EC-18 treated groups showed only a few microscopic lung lesions and no evidence of metastatic lesion with highest dose whereas widespread gross lung lesions were observed in untreated control. To investigate whether the anti-tumor effect of EC-18 is associated with suppression of tumor cell Toll-like receptor 4 (TLR-4) expression in addition to stimulation of the immune cells, KIGB-5 cells were exposed to LPS with or without EC-18. TLR-4 mRNA and protein expression, measured by reverse transcriptase PCR (RT-PCR), real-time quantitative PCR and western blot analysis, showed suppression of TLR-4 expression in KIGB-5 cells treated with EC-18 compared with control. In conclusion, EC-18 has a significant anti-tumor effect in this experimental model of biliary cancer suggesting potential for clinical application to this difficult cancer.

EC-18, a Synthetic Monoacetyldiacylglyceride, Inhibits Hematogenous Metastasis of KIGB-5 Biliary Cancer Cell in Hamster Model

EC-18 (monoacetyldiacylglyceride) stimulates T cell production of IL-2, IL-4, IL-12, IFN-gamma, and GM-CSF in vitro. To study the effects of these cytokines stimulated by EC-18 on cancer cells, we applied hamster biliary cancer model, a difficult cancer to treat. Cancer (KIGB-5) cells were given intravenously to produce hematogenous metastatic lung lesions which were treated with EC-18 at 10, 25, and 50 mg/kg/day respectively. The fourth group was untreated control. At 4th, 8th, and 12th week the lungs were examined. EC-18 treated groups showed only a few microscopic lung lesions and no evidence of metastatic lesion with highest dose whereas widespread gross lung lesions were observed in untreated control. To investigate whether the anti-tumor effect of EC-18 is associated with suppression of tumor cell Toll-like receptor 4 (TLR-4) expression in addition to stimulation of the immune cells, KIGB-5 cells were exposed to LPS with or without EC-18. TLR-4 mRNA and protein expression, measured by reverse transcriptase PCR (RT-PCR), real-time quantitative PCR and western blot analysis, showed suppression of TLR-4 expression in KIGB-5 cells treated with EC-18 compared with control. In conclusion, EC-18 has a significant anti-tumor effect in this experimental model of biliary cancer suggesting potential for clinical application to this difficult cancer.

Efficacy of Gemcitabine Chemotherpy in Advanced Non-small cell Lung Cancer ( NSCLC ): A Phase 2 Study / 대한암학회지

PURPOSE: To evaluate the efficacy and safety of gemcitabine, a pyrimidine antimetabolite against advanced non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: Forty patients with unresectable stage IIIb to IV, pathologacally documented NSCLC were evaluated. Patients received gemcitabine 1000 mg/m, as a 30 to 60-min, intravenous infusion on days 1, 8 and 15, which was repeated every 28 days. Responses were assessed every two courses. Twenty-five to fifty percent dose reduction was permitted, ptovided that overall toxicity was severe according to World Health Organization (WHO) toxicity criteria. RESULTS: Of all 40 patients (32 men, 8 women; age range 37 to 73 years; median 63 years), 3S patients were assessable for response. 15 patients had stage IIIb disease and 25 had stage IV. Nineteen patients were histologically classified as adenocarcinoma (47.5%), 17 as squamous cell carcinoma (42.5%), 1 as large cell carcinoma (2.5%), 1 as mixed carcinoma (2.5%) and 2 as undifferentiated carcinoma (5.0%). The overall response rate was 20%. None of the patients showed complete response while 7 showed partial response (20%), 5 had stable diseases (23%) and 23 had progressive diseases (57%). During a total of 119 courses, hematologic toxicity was negligible. Granulo- cytopenia worse than WHO grade 3 occured in 11.8%, anemia in O.S% and thrombocytopenia in 0.8%, respectively. Non-hematologic toxicity was minor and easily controlled. There was no case of febrile neutropenia or treatment-related death. CONCLUSION: The single agent efficacy of gemcitabine is comparable to other agents commonly used to treat NSCLC. Gemcitabine has unusually mild side effect profile for such an active agent. This significant activity in conjunction with a very favorable toxicity profile supports further investigation in combination with other agents in patients with inoperable NSCLC.

Postoperative adjuvant MVP Chemotherapy and Radiotherapy for Non-Small Cell Lung Cancer / 대한치료방사선과학회지

PURPOSE: Since February 1991, a prospective study for non-small cell lung cancer patients who underwent radical resection and had a risk factor of positive resection margin or regional lymph node metastasis has been conducted to evaluated the effect of MVP chemotherapy and radiotherapy on the pattern of failure, disease free and oerall survival, and tolerance of combined treatment. MATERIALS AND METHODS: Twenty nine patients were registered to this study until Sep. 1993 ; of these 26 received planned therapy. Within 3 weeks after radical resection, two cycles of MVP(Motomycin C 6 mg/m2 , Vinblastin 6 mg/m2 , Cisplatin 6 mg/m2 ) chemotherapy was given with 4 weeks intervals. Radiotherapy (5040 cGy tumor bed dose and 900 cGy boost to high risk area) was started 3 to 4 weeks after chemotherapy. RESULTS: One and two year overall survival rates were 76.5% and 8.6% respectively. Locoregional failure developed in 6 patients (23.1%) and distant failure in 9 patients(34.6%). Number of involved lymph nodes, resection margin positivity showed some correlation with failure pattern but T-stage and N-stage showed no statistical significance. The group of paients who received chemotherapy within 2 weeks postoperatively and radiotherapy within 70 days showed lower incidence of distant metastasis. Postoperative combined therapy were well tolerated without definite increase of complication rate, and compliance rate in this study was 90%. CONCLUSION: 1) MVP chemotherapy showed no effect on locoregional recurrence, ut appeared to decrease the distant metastasis rate and 2) combined treatments were well tolerated in all patients. 3) he group of patients who received chemotherapy within 2wweks postoperatively and radiotherapy within 70 days showed lower incidence of distant metastasis. 4)Addition of chemotherapy to radiotherapy failed to increase the overall or disease free survival.

Clinical efficacy of teicoplanin in gram-positive bacterial infection / 감염

No abstract available.