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A Phase II Study of Single-Agent Gemcitabine as a Second-Line Treatment in Advanced Non-Small Cell Lung Cancer Keun-Hyok Cho, Young-Bong Song, Ik-Sung Choi, Eun-Hee Cho, Jae-Won Choi, Young Mi Ahn, Yong Ho Roh, Seung-Hyun Nam, Bong-Seog Kim Japanese Journal of Clinical Oncology.2006; 36(1): 50. CrossRef
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PURPOSE S: The cell surface metalloproteinase CD10/ neutral endopeptidase 24.11 (NEP) hydrolyzes a variety of peptide substrates and reduces cellular responses to specific peptide hormones. CD10/NEP has been recognized as modulating peptide-mediated proliferation of lung carcinomas and the normal airway epithelium. The purposes of this study are to evaluate the expression of CD10/NEP in human lung cancers, including non- small cell lung carcinoma (NSCLC) and small cell lung carcinoma (SCLC), and to correlate its expression with several clinicopathologic parameters, including proliferative activity. MATERIALS AND METHODS CD10/NEP expression and proliferative activity were evaluated by immunohisto chemistry in 55 formalin-fixed and paraffin-embedded NSCLC and SCLC specimens, using anti-Human CD10/ NEP and Ki-67 primary antibodies. The correlations between CD10/NEP expression and either Ki-67 proliferative activity or several clinicopathologic parameters were analyzed by chi-square test or Fisher's exact test. RESULTS Most NSCLC (76%) and SCLC (80%) cases showed loss of CD10/NEP expression in the tumor cells, whereas the bronchial and alveolar epithelia and stromal fibroblasts in the adjacent healthy lung revealed strong expression of CD10/NEP. Its expression was not correlated with proliferative activity or any of the clinicopathologic parameters except for age. Only in terms of topographical expression was CD10/NEP expression found to be inversely correlated with Ki-67 proliferative activity. CONCLUSION These results suggest that loss of CD10/ NEP expression may be important in the pulmonary carcinogenesis of both NSCLCs and SCLCs, which is topographically related to NSCLC proliferative activity, especially in the squamous cell type.
PURPOSE To evaluate the efficacy and safety of gemcitabine and carboplatin (GC) in the treatment of advanced non-small-cell lung cancer (NSCLC). MATERIALS AND METHODS Between November 1999 and April 2001, 34 patients were enrolled in this study. The median age was 66 (range: 52-74) years old and all were male.
Sixteen patients demonstrated stage IIIB, 15 stage IV, and 3 recurrence of disease after surgery. Twenty-two patients showed a ECOG performance status of 0 or 1 and 12 had 2.
Twenty patients presented with squamous cell carcinoma, 11 adenocarcinoma and 3 unclassified NSCLC. The treatment regimen consisted of intravenous carboplatin AUC of 6 on day 1 and gemcitabine 1,250 mg/m2 on day 1 and 8. The treatment was repeated every 28 days. Toxicities were evaluated according to WHO toxicity criteria. RESULTS All thirty-four patients were evaluable. Partia responses were observed in 15 patients. The overall response rate was 44% (95% confidence interval: 27-61%) and the median response duration was 26 (range 8-60 ) weeks. The median survival of all patients was 50 (range 8-70 ) weeks.
During a total of 144 cycles, granulocytopenia greater than WHO grade 2 occurred in 2%, thrombocytopenia in 2%, and anemia in 3%, respectively. Non- hematologic toxicities were minor and easily controlled. CONCLUSION A combination chemotherapy of intravenous gemcitabine and carboplatin has a relatively high activity with acceptable toxicities in patients with advanced NSCLC.
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A Phase II Study of Single-Agent Gemcitabine as a Second-Line Treatment in Advanced Non-Small Cell Lung Cancer Keun-Hyok Cho, Young-Bong Song, Ik-Sung Choi, Eun-Hee Cho, Jae-Won Choi, Young Mi Ahn, Yong Ho Roh, Seung-Hyun Nam, Bong-Seog Kim Japanese Journal of Clinical Oncology.2006; 36(1): 50. CrossRef
A 21-day Schedule of Gemcitabine and Cisplatin Administration in the Treatment of Advanced Non-Small Cell Lung Carcinoma: a Phase II Study Jong-Sung Park, Chang-Min Lee, Shin-Ae Lee, Chang-kil Jung, Sung-Hyun Kim, Hyuk-Chan Kwon, Jae-Seok Kim, Hyo-Jin Kim Cancer Research and Treatment.2004; 36(1): 62. CrossRef
PURPOSE To evaluate the efficacy and toxicity of the combination therapy of paclitaxel and cisplatin in advanced, non-small cell, lung cancer patients MATERIALS AND METHODS: Between December 1997 and September 2001, 37 patients with advanced, non-small cell, lung cancer were enrolled in this study. Patients were treated with paclitaxel (135 mg/m2, 24 hr infusion) and cisplatin (75 mg/m2). The treatments were repeated every 4 weeks. RESULTS Among the 37 patients enrolled, 21 were treated with paclitaxel and cisplatin as a first-line and 16 patients as a second-line. The median age of the patients was 59. In the first-line group, 10 had stage IIIB and 11 had stage IV, non small cell lung cancer. Of 21 patients in first-line treatment group that could be evaluated, objective responses were observed in 6 patients (response rate: 28.6%, CR: 4.8%, PR: 23.8%). The mediansurvival duration for patients was 48 weeks. With the second-line group, 3 patients showed a partial response (response rate: 18.7%) to treatment, with median survival duration of 44 weeks. Grade 3-4 leukopenia was observed in 27.1% of the first-line, and 23.6% in second- line, treatment groups. CONCLUSION Combination chemotherapy, with paclitaxel and cisplatin, in non-small cell lung cancer has acceptable toxicities in both first and second-line treatment groups.
In terms of efficacy, no superior response was shown for either group. More randomized studies, with a larger group of patients, are required to prove the true efficacy.
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Proximal Gastrectomy Reconstructed by Jejunal Pouch Interposition for Upper Third Gastric Cancer: Prospective Randomized Study Chang Hak Yoo, Byung Ho Sohn, Won Kon Han, Won Kil Pae World Journal of Surgery.2005; 29(12): 1592. CrossRef
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PURPOSE A retrospective study was performed o define the clninical significance of p53, P-glycoprotein (Pgp), and Glutathione S transferase-pi (GST-pi) immunohistochemical (IHC) expression in advanced non-small cell lung cancer (NSCLC). MATERIALS AND METHODS We reviewed fifty seven patients with advanced NSCLC who had undergone surgical resection or bronchoscopic biopsy between March 1997 and March 1999. IHC staining for p53, GST-pi, and Pgp was performed using formalin-fixed, paraffin-embedded specimens of the fifty seven patients. RESULTS The IHC expression rate was 63% for p53, 28% for Pgp, and 53% for GST-pi, respectively. The median survival of the fifty seven patients was 45 weeks and the response rate was 38.6% (partial response, 22/57). The chemotherapy response and median survival of the p53 negative group (57% and 61 weeks) were better than those demonstrated by the p53 positive group (28% and 21 weeks) (p<0.05). Additionally, the GST-pi negative group showed a greater improvement of survival and response rate than the positive group (p<0.05).
Pgp expression status appeared to have no significant differential effect on chemotherapy response and survival. CONCLUSION These results suggest that immunohisto chemical staining of p53 and GST-pi may be useful in predicting the response to chemotherapy as well as survival in advanced NSCLC. However, this study is limited by its retrospective nature and the small numbers of tumors studied from a heterogenous group of patients.
PURPOSE There are increasing evidences that angiogenesis enhances tumor growth and biological aggressiveness in gastric carcinoma. Mast cells have been implicated in the angiogenic process, by secreting angiogenic factors including vascular endothelial growth factor (VEGF), or enzymes that degrade extracellular matrices. However, the exact nature of mast cells in relation to cancer is contradictory so we conducted retrospective studies, to find the significance of mast cell densities, and microvessel counts in each clinicopathologic factors, including VEGF expression, in proper muscle (PM) gastric carcinoma. MATERIALS AND METHODS 52 specimens, obtained from patients with PM gastric carcinoma, were studied using the immunohistochemical methods, monoclonal antibodies for mast cell tryptase, factor VIII-related antigen and VEGF. RESULTS Mast cell densities were significantly increased in diffuse histologic type (p=0.042), infiltrating margins (p<0.0001) and VEGF positive (p=0.010) tumors.Microvessel counts were significantly higher in patients over 55 years old (p=0.024), with tumor sizes larger than >3 cm (p=0.015), diffuse histologic type (p=0.038) and lymph node metastasis (p=0.001). Similarly there were significantly increased densities in VEGF positive tumors (p<0.0001). Pearson's correlation analysis revealed a significant relationship between mast cell densities and microvessel counts (r=0.614, p<0.01), indicating a high vascular grade with increased number of mast cells. CONCLUSION We demonstrated a close relationship between mast cell densities, microvessel counts and VEGF expression.
These results suggest that mast cells and VEGF are important regulators of tumor angiogenesis and cooperatively induce the formation of vascular stroma in PM gastric carcinomas.
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PURPOSE Sarcomas have rarely been analyzed for telomerase, which is an RNA-dependent DNA polymerase to maintain telomeres and prevent telomere shortening. This study was undertaken to determine telomerase activity and the expression of the telomerase subunits human telomerase RNA (hTR) and telomerase reverse transcriptase (TERT) in soft tissue sarcomas. MATERIALS AND METHODS Twenty three sarcomas were analyzed for the telomerase activity by a radioactive PCR-based TRAP assay. All of the samples were further investigated for the expression of hTR by in situ hybridization and for TERT and p53 by immunohistochemistry. RESULTS Telomerase activity was detected in four (17%) samples. Expression of hTR was demonstrated in 11 (48%) cases, whereas TERT was expressed in 20 (87%).Of the four telomerase-positive tumors, three were positive for both hTR and TERT, and one was positive only for TERT. p53 overexpression was observed in nine (39%) tumors. The frequency of p53 expression increased as the tumor grade advanced (p= .064). CONCLUSION These data indicate that the reactivation of telomerase is an uncommon event in human soft tissue sarcomas. The high frequency of the expression of hTR and TERT in these tumors suggests that telomerase activity may be regulated at the transcriptional level and an additional event leading to telomerase activation exist.
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Concomitant underexpression of TGFBR2 and overexpression of hTERT are associated with poor prognosis in cervical cancer Hui Yang, Hongyan Zhang, Yahua Zhong, Qiaoli Wang, Lei Yang, Hong Kang, Xiaojia Gao, Haijun Yu, Conghua Xie, Fuxiang Zhou, Yunfeng Zhou Scientific Reports.2017;[Epub] CrossRef
PURPOSE To obtain basic data for development of a glioblastoma-specific immunotoxin, the expression of variable cell surface receptors on a human glioblastoma xenograft model was evaluated, using NOD/SCID mice. MATERIALS AND METHODS We developed a xenograft model in NOD/SCID mice implanted with a human glioblastoma cell line (U-87MG). Immunohistochemical studies were performed on implanted tumor nodules (n=8) using antibodies against CD71, EGFR, IGF-IRalpha, CXCR4 and IL-4Ralpha. RESULTS Expression of IL-4Ralpha, in implanted tumornodules, was the highest of the cell surface receptors evaluated in this study. However, the endothelial cells in, and around, the tumor nodules also revealed immunopositivity against IL-4Ralpha. The immunoreactivity of IL-4Ralpha, and other surface receptors such as CD71, IGF-IRalpha and EGFR, was prominent in tumor nodules associated with tumor necrosis. CONCLUSION IL-4Ralpha would be a possible target for the development of glioblastoma-specific immunotoxin, although there are limitations due to its endothelial expression.
PURPOSE In order to evaluate the response to radiation therapy and to analyze the patterns of failure, survival and complications, we performed a retrospective analysis of patients with conjunctival lymphoma. MATERIALS AND METHODS From November 1991 to March 1999, 11 patients were diagnosed as conjunctival lymphoma at Asan Medical Center. Five patients had bilateral involvements, and a total of 16 eyes received radiation therapy. Using 6 to 9 MeV electrons or 4 MV photon beams, all patients were treated with a single anterior field to total doses ranging from 30 Gy to 45 Gy delivered in 10 to 25 fractions. The median follow up period was 57 Months. RESULTS All patients achieved a complete response with radiation therapy. Two of 16 eyes that were treated (12.5%) developed local recurrence after radiation therapy, however they were salvaged with 30 Gy of reirradiation. The five-year local control was 88.9%. One out of 11 patients (9.9%) developed lung metastasis and received chest irradiation. At the last follow up, one had died of pneumonia and 10 patients were alive without disease evidence. The five-year overall survival rate was 77.8% and 5-year disease free survival was 77.8%. Cataract and dry eye occurred in one patient (9.9%) respectively. CONCLUSION Radiation therapy is a very effective and safe treatment modality for conjunctival lymphoma. The local control rate of radiotherapy was excellent and complications were acceptable. Radiation therapy is also an effective treatment modality for recurrent conjunctival lymphoma. It generally requires more than three months to achieve complete response following radiation therapy, thus we recommend evaluating the response to radiation therapy at three months after completion of treatment.
PURPOSE To evaluate the efficacy of sclerotherapy with OK-432 for lymphangiomas. MATERIALS AND METHODS Retrospective review of twelve patients with lymphangiomas who were treated with OK-432 from 1996 to 2000. RESULTS Twelve patients were treated by sclerotherapy with OK-432. Ten patients were received sclerotherapy with OK-432 as primary therapy, and two were treated as secondary therapy after failure of surgery. Six cases were cystic hygroma (macrocystic); all of them, complete shrinkage was obtained. The other six cases were cavernous lymphangioma (microcystic): two of them, therapy were successful, but four were failed to achieve satisfactory shrinkage. So, they underwent surgical excision after failure of sclerotherapy.
The results were excellent in cystic hygroma (success rate; 100%), however moderately poor results were obtained in cavernous lymphangioma (success rate 33.3%). CONCLUSION Intralesional injection of OK-432 is effective therapy for cystic hygroma as a primary therapy.
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