• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제48권5호
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• pp.284-291
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• 2022

Objectives: This study aimed to analyze the clinicopathological prognostic factors affecting the survival of patients with oral squamous cell carcinoma (OSCC). Materials and Methods: A retrospective study was conducted on patients with OSCC who received treatment at the Oral Oncology Clinic of the National Cancer Center (NCC) from June 2001 to December 2020. The patients' sex, age, primary site, T stage, node metastasis, TNM staging, perineural invasion (PNI), lymphovascular invasion (LVI), differentiation, surgical resection margin, smoking, and drinking habits were investigated to analyze risk factors. For the univariate analysis, a Kaplan-Meier survival analysis and log-rank test were used. Additionally, for the multivariable analysis, a Cox proportional hazard model analysis was used. For both analyses, statistical significance was considered when P<0.05. Results: During the investigation period, 407 patients were received surgical treatment at the NCC. Their overall survival rate (OS) for five years was 70.7%, and the disease-free survival rate (DFS) was 60.6%. The multivariable analysis revealed that node metastasis, PNI, and differentiation were significantly associated with poor OS. For DFS, PNI and differentiation were associated with poor survival rates. Conclusion: In patients with OSCC, cervical node metastasis, PNI, and differentiation should be considered important prognostic factors for postoperative survival.

• IMMUNE NETWORK
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• 제5권1호
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• pp.23-29
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• 2005

Background: Interleukin-7 receptor (IL-7R) ${\alpha}$-deficient mice have small numbers of B cells and ${\alpha}{\beta}$T cells in periphery, they totally lack ${\gamma}{\delta}$T cells. In addition, the V-J recombination and transcription of TCR ${\gamma}$ genes is also severely impaired in IL-7R ${\alpha}$-deficient mice. Stat5, a signaling molecule of the IL-7R, induces germline transcription in the TCR ${\gamma}$ locus, and promotes V-J recombination and ${\gamma}{\delta}$T cell development. However, the roles for IL-7R signaling pathway in thymic or extrathymic ${\gamma}{\delta}$T cell development are largely unknown. Methods: To clarify the role of the IL-7 receptor in proliferation and survival of ${\gamma}{\delta}$T cells, we introduced the TCR ${\gamma}{\delta}$ transgene, $V_{{\gamma}2}/V{\delta}_5$, into IL-7R ${\alpha}$-deficient mice, and investigated the development of ${\gamma}{\delta}$T cells. Results: We found that $V_{{\gamma}2}/V{\delta}_5$ transgene restored ${\gamma}{\delta}$T cells in the epithelium of the small intestine (IEL) but not in the thymus and the spleen. Further addition of a bcl-2 transgene resulted in partial recovery of ${\gamma}{\delta}$T cells in the thymus and the spleen of these mice. Conclusion: Taken together, this study revealed that the IL-7R ${\alpha}$ is indispensable for proliferation and survival mainly in thymic ${\gamma}{\delta}$T cell development.

• Toxicological Research
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• 제13권1_2호
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• pp.71-78
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• 1997

The mutational effects of pentachlorophenol (PCP) on the hypoxanthine phosphoribosyl transf erase (hprt) locus in human T-cell were analysed by T-cell clonal assay in vitro. Cells were exposed for 24 hours at primary culture to 0~100 ppm (W/V) PCP in dimethyl sulfoxide. Treated cells were allowed at the same time to stimulate by phytohemagglutinin (PHA) and T-cell growth factor (TCGF) and then seeded in medium containing 6-thioguanine to select for hprt-negative routants. We have also defined the optimal condition for the determination of mutant frequency. The parameters investigated include survival counting, first and second subculture for clonal efficiency plating and mutant plating. Under the optimal conditions, mutant frequencies of high dose-treated cells were significantly higher than those of non-treated or low dose cells. The results indicated a clear dose-effect relationship and showed that mutant frequency in 50 ppm PCP treated cell was 4.31$\times$$10^{-5}$ (background, 8.32$\times$$10^{-6}$). Above data strongly suggest that hprt mutation assay can be used as a biomarker for the environmental risk assessment.

• 대한두경부종양학회지
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• 제34권2호
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• pp.11-15
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• 2018

Background/Objectives: The efficacy of radiotherapy alone versus chemoradiotherapy has been studied in patients with T2N0M0 laryngeal squamous cell carcinoma. Materials & Methods: Thirty nine patients with newly diagnosed T2N0M0 laryngeal squamous cell carcinoma were treated with either radiotherapy(RT group, 66-70Gy) or chemoradiotherapy(CRT group, cisplatin based concurrent chemoradiation with or without 2 cycles induction chemotherapy including cisplatin, $5-FU{\pm}$ docetaxel / radiation therapy same with above mentioned). The mean follow-up was 73.5 months. Results: The overall survival (OS), disease specific survival (DSS), disease free survival (DFS), and larynx preservation survival (LPS) at 5 years were 70%, 79%, 67%, and 71%. The complete response rate was 82.4% in RT group, and was 95.5% in CRT group. OS (57% vs 80%), DSS (69% vs 86%), DFS (52% vs 77%), and LPS (63% vs 77%) at 5 years were higher in CRT group than RT group, but it was not statistically significant. In subsite analysis, CRT group tends to improve DFS, compared to RT group, in glottic cancer (p=0.06). The toxicities were tolerable and no fatal case was observed in both groups. Conclusion: Chemoradiotherapy is effective as primary therapy for T2 laryngeal squamous cell carcinoma and showed manageable treatment induced toxicity.

• 한방안이비인후피부과학회지
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• 제19권3호통권31호
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• pp.22-33
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• 2006

Objective : Angiogenesis induced by hypoxia and inflammation are an essential process of solid tumors and psoriasis. We researched the HIF-1 ${\alpha}$ (hypoxia inducible factor 1 alpha), VEGF(Vascular Endothelial Growth Factor), survival related PI3K-Akt, and inflammation related COX-2 protein expressions to get the information of the mechanism and effects of Rehmannia glutinosa in HepG2 and HaCaT cell lines. Method : To investigate the roles of the Rehmannia glutinosa extract, we performed MTS assay and western blots using HaCaT cells and HepG2 cells. HaCaT cells and HepG2 cells were treated with $50{\mu}g/ml$ and $100{\mu}g/ml$ Rehmannia glutinosa extracts. After 4hrs, HaCaT cells were treated with IGF-II protein for 24hrs and HepG2 cells were treated with $CoCl_2$. Results : 1. We could ohserve that the reduction of the protein level of HIT-1 ${\alpha}$ induced by IGF-II in HaCaT cells. 2. We Could ohserve that the decreased PI3K-Akt and COX-2 expression level by Rehmannia glutinosa extracts treated in HaCaT cells independently ith ERK1/2. 3. We could observe that the reduction of the protein level of HIF-1 ${\alpha}$ induced by $CoCl_2$ in HepG2 cells. Conclusion : These results suggest that Rehmannia glutinosa extracts contributes to the anti-survival pathway and anti-inflammatory activities. Also, we could assume that Rehmannia glutinosa act as anti-inflanmmatory or anti-hypoxia agents via reduction of COX-2 and HIF-1 ${\alpha}$.

• Radiation Oncology Journal
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• 제16권4호
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• pp.425-431
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• 1998

목적 : 초기 비소세포 폐암환자의 치료시 늑막하병변이 있는 경우에 치료후 결과에 어떤 영향을 주는지를 분석하고, 이 결과를 토대로 향후 치료방침의 결정에 도움을 주기 위해서 본 연구를 하였다. 대상 및 방법 : 1990년 12월부터 1996년 9월까지 동아대학병원에서 절제가능한 비소세포 폐암으로 진단받고 수술을 받은 환자 91명중 제 I병기와 제 II병기환자 66명을 대상으로 후향적 분석을 하였다. 66명중 늑막하병변이 있는 경우는 22명이었으며, 제 I병기(T1N0, T2N0)에서 늑막하병변이 있는 경우는 15명/44명(34.1$\%$)이었으며, 제 II병기(T1N1, T2Nl, T3No)에서 늑막하병변이 있는 경우는 7명/22명(31.8$\%$)이었다. 수술후 보조요법으로서 전신 항암요법은 시행되지 않았고, 방사선치료는 7명에서 시행되었다. 최소 추적관찰기간은 8개월이며 최대추적관찰기간은 84개월이며, 평균 추적관찰 기간은 33.2개월(중앙값; 29.5개월)이었다. 생존율은 Kaplan-Meier법으로 분석하였고, 서로간의 성적비교는 log-lank test를 이용하였다. 결과 : 전체환자의 3년 생존율은 69.5$\%$였다. 전체환자에서 늑막하병변이 있는 경우와 없는 경우의 3년 생존율은 각각 35.5$\%$와 84.6$\%$였으며, 통계학적으로 의미있는 차이를 보였다(p=0.0017). 제 I병기에서 늑막하병변이 있는 경우와 없는 경우의 3년 생존율은 각각 33.1$\%$와 92.3$\%$였으며, 통계학적으로 의미있는 차이를 보였다(p=0.001). 제 II병기에서 늑막하병변이 있는 경우와 없는 경우의 3년 생존율은 각각 53.3$\%$와 45.7$\%$였으며, 통계학적으로 차이는 없었다 (p=0.911). 제 I병기환자 44명중 원발종양의 크기가 3cm이상인 경우(T2, 34명)는 늑막하병변이 있는 경우와 없는 경우의 3년 생존율은 각각 27.3$\%$와 90.3$\%$였으며, 통계학적으로 의미있는 차이를 보였다(p=0.009). 국소재발은 늑막하병변이 있는 경우에는 제 I병기에서 2명/15명(13.3$\%$), 제 II병기에서 2명/7명(28.6$\%$)에서 재발하였고, 늑막하병변이 없는 경우에는 제 I병기에서 4명/29명(13.8$\%$), 제 II병기에서 2명/14명(14.3$\%$)에서 국소재발을 보였다. 원격전이는 늑막하병변이 있는 경우에는 제 I병기에서 5명/15명(33.3$\%$), 제 II병기에서 2명/7명(28.6$\%$)에서 원격전이를 보였고, 늑막하병변이 없는 경우에는 제 1병기에서 2명/29명(6.9$\%$), 제 II병기에서 4명/14명(28.6$\%$)에서 원격전이를 보였다. 결론 : 초기 비소세포 폐암환자의 예후에 있어서 늑막하병변의 유무가 중요한 역할을 하는 것으로 생각되며, 특히 임파선 전이가 없는 72병기의 경우 늑막하병변이 있으면 늑막하병변이 없는 경우에 비해 생존율에서 현저한 차이를 보였다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권4호
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• pp.1585-1588
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• 2014

Background: Data regarding childhood and adolescent non Hodgkin lymphomas in Iran are limited. The aim of this study was to assess the epidemiological and histomorphological features and survival of affected patients in our center. Materials and Methods: The clinicopathologic features and outcome of 44 children and adolescents with non Hodgkin lymphoma diagnosed during 2004-2012, were investigated retrospectively. The influence of potential prognostic parameters in overall survival was investigated by log-rank test and Cox regression analysis. Results: The mean age at presentation was $13.8{\pm}6.16$ years with a male predilection (M: F=3:1). Malignant lymphoma, not otherwise specified, diffuse large cell lymphoma and Burkitt lymphoma were the three most common histological types observed. The tumors were 36.4% intermediate grade, 27.3% high grade and 34.1% belonged to the malignant lymphoma not otherwise specified group. Immunohistochemistry findings were available in 39 cases. Out of these cases 33 (84.6%) had B cell lineage, 4 (10.25%) T cell lineage and 2 (5.12%) of the cases belonged to miscellaneous group. 3 year and 5 year survivals were 48% and 30% respectively and median survival was 36 months (95%CI=21.7-50.3 months). Overall survival in patients with high grade tumors was 19.5 months, in the intermediate group,79 months, and for malignant lymphomas not otherwise specified it was 33.6 months (p value=0.000). Conclusions: The survival rate for children and adolescents with non Hodgkin lymphomas at our center during 2004-2012 was at a low level.

• Tuberculosis and Respiratory Diseases
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• 제77권1호
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• pp.13-17
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• 2014

Background: This study analyzed the negative prognostic factors in patients who received second-line chemotherapy for advanced inoperable non-small cell lung cancer (NSCLC). Methods: We retrospectively reviewed the records of 137 patients with inoperable stage III-IV NSCLC who received second-line chemotherapy. The effects of clinical parameters on survival were analyzed and the hazard ratios (HR) for mortality were identified by a Cox regression analysis. Results: Sex, age older than 65 years, smoking history, cell type, T-stage, best response to first-line chemotherapy and first-line chemotherapy regimen were significant negative predictors in univariate analysis. The multivariate analysis showed that patients older than 65 years (HR, 1.530; 95% confidence interval [CI], 1.020-2.297), advanced T stage (T4 vs. T1; HR, 2.273; 95% CI, 1.010-5.114) and non-responders who showed progression with first-line chemotherapy (HR, 1.530; 95% CI, 1.063-2.203) had higher HR for death. Conclusion: The age factor, T stage and responsiveness to first-line chemotherapy were important factors in predicting the outcome of patients with advanced NSCLC who received second-line chemotherapy. The results may help to predict outcomes for these patients in the future.

• 대한두개안면성형외과학회지
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• 제18권2호
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• pp.105-111
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• 2017

Background: The author analyse the impact of extracapsular lymph node spread and bone engagement in the ipsilateral neck of patients suffering squamous cell carcinoma (SCC) of the lower lip. Methods: The data of 56 neck dissections performed in patients suffering SCC of the lower lip between January 2000 and December 2008 were retrospectively analysed. Statistical analysis was performed with the Kaplan-Meier life table method, and the survival rate was investigated with the log rank statistic and significance test. The values were considered statistically significant at p<0.05. Results: Nine patients took advantage from simultaneous treatment of tumor and prophylactic neck dissection (level I-III), reaching 100% survival rate. Patients suffering metastasized disease, who received radical neck dissection at the time of tumor treatment, presented 83.3% survival rate. Patients who underwent previous surgery and radiotherapy presented worse prognosis although radical neck dissection in case of extra-capsular spread only (24.7%) and osseous engagement (22.2%). Conclusion: Prophylactic neck dissection (level I-III) is recommended in T3-T4 N0 SCC. Simultaneous treatment of tumor and cervical lymph nodes provides a better prognosis as respect to delayed nodal management. Extra-capsular spread with or without bone engagement represents independent risk factor responsible for high mortality rate of SCC of the lower lip.

• 한국가축번식학회지
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• 제26권4호
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• pp.311-320
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• 2002

The objective of this study was to assess the developmental potential in vitro produced embryos frozen-thawed with the various containers, and also examined expression and localization of heat shock protein 70 at these embryos. For the vitrification, 2-cell, 8-cell and blastocyst stage embryos produced by in vitro fertilization (IVF) and nuclear transfer (NT) were exposed the ethylene glycol 5.5 M freezing solution (EC 5.5) for 30 sec, loaded on each containers such EM grid, straw and cryo-loop, and then immediately plunged into liquid nitrogen. Thawed embryos were serially diluted in sucrose solution, each for 1 min. and cultured in CRI-aa medium. Survival rates of the vitrification production were assessed by re-expanded, hatched blastocysts. There were no differences in the survival rates of IVF using EM grid and cryo-loop. However, survival rates by straw were relatively lower than other containers. The use of cryo-loop resulted in only survival of nuclear transferred embryos (43.7%). Also, there embryos after IVF or NT were analysed by semi-quantitive reverse transcription-polymerase chain reaction (RT- PCR) methods for hsp 70 mRNA expression. Results revealed the expression of hsp 70 mRNh were higher thawed embryos than control embryos. Immunocytochemistry used to localize the hsp 70 protein in embryos. Two and 8-cell embryos derived under control condition was evenly distributed in the cytoplasm but appeared as aggregates in some frozen-thawed embryos. However, in the control, blastocysts displayed aggregate signal while Hsp70 in frozen-thawed blastocysts appeared to be more uniform In distribution. Therefore, this result suggests that the exploiting Hsp 70 in the early embryos may be role for protection of stress condition for increase viability of embryos within IVF, NT and there frozen-thawed embryos.