• 화훼연구
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• 제16권2호
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• pp.128-133
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• 2008

옥잠화(Hosta plantaginea)와 털머위(Farfugium japonicum) 종자에 방사선을 조사하여 고품질의 변이종을 선발할 목적으로 실험을 수행하였다. 두 식물의 종자에 ${\gamma}-ray$를 10-30Gy로 조사한 후 파종하여 종자발아, 생장, 생존율 및 변이체 유발에 미치는 영향을 조사하였다. 옥잠화와 털머위 모두 20Gy 이상의 선량에서는 선량이 증가될수록 발아가 지연되고 발아율도 저하되었다. 반치사선량(半致死線量)은 옥잠화 30Gy, 털머위는 25Gy 수준이었다. 생장은 옥잠화, 털머위 모두 ${\gamma}-ray$ 10Gy 이상의 선량에서 왜화경향이 뚜렷하였다. 옥잠화는 $M_1$세대에서 166개의 변이체가 나타났으며, $M_2$ 세대에서 12개의 유망 변이체를 선발하였다. 털머위는 $M_1$세대에서 57개의 변이체가 나타났으며, $M_2$ 세대에서 9개의 유망 변이체를 선발하였다.

• 한국사회복지학
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• 제68권2호
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• pp.107-130
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• 2016

2013년 정년연장이 법제화되어, 베이비붐 세대가 노령기로 진입하는 2016-17년에 단계적으로 적용될 전망이다. 이 연구는 정년연장 법제화로 베이비붐세대 중 얼마나 혜택을 받으며, 실제로 누가(어떤 특성의 집단) 혜택을 누리게 될 것인가에 대한 실증적 분석을 제공하고자 하였다. 이와 같이 정년연장 혜택의 귀착 규모 및 특성을 분석함으로써, 이 연구는 정년연장 정책의 파급효과와 영향을 파악하는 데 목적이 있다. 정년연장은 상근 정규직근로자에게 적용될 수 있는 제도이다. 따라서 베이비붐 세대의 경제활동상태와 노동이력을 추적하여, 정년연장 혜택을 받을 가능성이 높은 상근 정규직근로자로 생존하게 되는 집단의 규모와 특성을 분석해 보고자 하였다. 이를 위해 한국노동패널조사 4차(2001)부터 17차(2014)까지 패널자료를 활용하여, 생존분석을 통해 베이비붐세대 중 상근 정규직근로자 생존확률을 분석하였다. 생명표 분석결과, 베이비붐세대 중에서 정년연장 혜택을 받을 수 있는 비율은 11.4%에 불과했고, 75.3만명 규모로 추정되었다. Kaplan-Meier 생존분석과 Cox 비례위험 회귀분석(Cox proportional hazards regression model) 결과, 고학력일수록, 여성근로자에 비해 남성근로자의 경우 정규직 생존확률이 높았으며, 공공 및 정부기관 종사자가 민간기업 종사자에 비해 정규직 생존확률이 높았다. 100인 이상 규모의 기업에 근무하는 경우, 노동조합이 조직되어 있는 곳에 근무하는 경우 정규직 생존확률이 높았다. 이는 정년연장 혜택이 안정적 고용집단인 특정계층에게 집중되는 계층화 효과, 젠더편향 효과를 보여주는 것이다. 이는 격차확대 위험을 시사하며, 청년층이 선호하는 괜찮은 일자리에서의 일자리 경쟁과 세대갈등 가능성을 시사한다.

• Radiation Oncology Journal
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• 제12권3호
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• pp.369-376
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• 1994

This is a retrospective analysis of 64 patients who was treated with postoperative radiation therapy after radical hysterectomy and bilateral pelvic lymphadenectomy (53 patients) or total abdominal hysterectomy(11 patients) for uterine cervix cancer between May 1980 and September 1991 at the Department of Radiation Oncology, Kyung Hee University Hospital. Most patients were FIGO IB (31 Patients) and IIA (25 patients), and median period of follow-up was 5.1 years. Of these patients,24 received adjuvant whole pelvis irradiation of 6000 cGy and 40 received 5000-5500 cGy whole pelvis irradiation and/or intracavitary radiation (7 Patients). The actuarial overall and relapse free 5 year survival rate were $71.0\%$, $68.3\%$ respectively. The survival rates by stage were $79.1\%$ in stage I, and $61.2\%$ in stage II. Treatment failure was noted in 18 of 64 patients ($28.1\%$), Iocoregional failure in 8 ($12.5\%$), distant metastasis in 8 ($12.5\%$), paraaortic node metastasis in 1 and one patient and concurrent locoregional and distant metastasis. The univariate analysis of prognostic factors affecting to overall survival rate represented lymph node status, the number and site of metastatic lymph node, parametrial invasion, the thichness of cervical wall invasion, and size of cancer mass. Histology, vessel invasion, endometrial extension, hemoglobin level. resection margin status, age, radiation dose were not significant prognostic factors. Complication relating to operation and postoperative radiation were variable according to radiation therapy method: 6000 cGy RT group 8/24($33.3\%$), 5000-5500 cGy+ICR 3/7 ($42.9\%$), 5000-5500 cGy external RT only group 3/33 ($9.1\%$). In conclusion, the results suggest that postoperative radiotherapy is necessary in high risk patients for locoregional control and improving survival rate, and higher dose does not improve results but only increases complication.

• 대한두경부종양학회지
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• 제25권2호
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• pp.132-137
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• 2009

Purpose : For the past 10 years, the incidence of thyroid cancer has been rapidly increased in female population showing current incidence of 12,000 new thyroid cancer patients annually in Korea. Though differentiated thyroid cancer is known to show favorable prognosis and excellent long-term survival from slow growth and late distant metastasis, we re-evaluated prognostic factors of recurrence and mortality following surgical procedures based on our cases. Material and Methods : 954 Patients of DTC surgically treated at Department of Surgery, Inje University Busan Paik Hospital between 1980 and 2004 were reviewed in the aspects of the surgical procedures, clinical staging, risk factors, recurrence and their outcome through median follow-up period of 10.5 years. Results : Recurrence in remnant thyroid, cervical nodes, and distant metastasis were observed in 84 paients(8.8%), and 31 patients were confirmed to be died of locoregional recurrence of cancer and distant metasasis. Regarding the risk factors to recurrence, tumor size, extrathyroidal extension, nodal metastasis, and capsular invasion were significant predictors(p<0.05). Local recurrence and distant metastasis had no statistical signiicance according to age, sex, pathology, surgery, and lymphovascular invasion. Overall 10-year survival rate was 92.4%, but low, intermediate, and high-risk patient showed 100%, 94.4%, and 70.5% respectively. Conclusion : The significant factors influencing local recurrence and distant metastasis were tumor size, extrathyroidal exension, LN metastasis, capsular invasion. In order to improve survival rate of high-risk group, appropriate and aggressive management should be recommended.

• 대한두경부종양학회지
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• 제10권2호
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• pp.145-151
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• 1994

The malignant tumor of nasopharynx occurs in china and other oriental contries as high incidence and its prognosis is relatively poor because of frequent intracranial extension and early metastasis. Traditional therapeutic modality of nasopharyngeal cancer was definite radiotherapy, but recently some cancer institute had tried combined modality with induction chemotherapy and reported it may be valuable. We report the clinical evaluation and therapeutic result about 28 nasopharyngeal cancer patients which were treated with 2 courses of induction chemotherapy(Cisplatin+5-FU) and radiotherapy. The results were as follows: 1) The 3 years and 5 years survival rate were 76% and 47% in total patients. 2) The 3 years and 5 years survival rate were 92% and 63% in T1, T2, T3 group, and 25% and 0% in T4 group. 3) The 3 year and 5 year survival rate were 100% and 60% in neck node negative group, and 60% and 40% in neck node positive group. 4) The 3 year and 5 years survival rate were 100% and 50% in stage I II group, and 71% and 44% in stage III, IV group.

• 생약학회지
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• 제45권4호
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• pp.275-281
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• 2014

After harvesting the medicinal parts of Curcuma longa, the remaining underground parts were discarded. From the remaining underground parts of Curcuma longa quercetin-3-O-${\beta}$-D-glucopyranoside-7-O-${\alpha}$-L-rhamnopyranoside (Q37) was isolated. The antioxidant activities in vitro and lifespan-extension effect of Q37 were elucidated using the Caenorhabditis elegans. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging effect of Q37 showed similar potent activities in comparison with vitamin C. Q37 also showed potent superoxide quenching activities as measured by the riboflavin- and xanthine-originated superoxide quenching activity tests. Q37 prolonged lifespan of worms under normal culture condition. In terms of protective effect of Q37 on the stress conditions such as thermal and oxidative stresses, Q37-treated worms exhibited enhanced survival rate, as compared to control worms. To know the possible mechanism of Q37-mediated increased lifespan and stress resistance of worms, we examined the activities of Q37on superoxide dismutase (SOD), and invested intracellular reactive oxygen species (ROS) levels. The results revealed that Q37 was able to elevate SOD activity of worms and reduce intracellular ROS accumulation in a dose-dependent manner.

• Journal of Ginseng Research
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• 제42권3호
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• pp.343-351
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• 2018

Background: Red ginseng is a popularly used traditional medicine with antiaging effects in Asian countries. The present study aimed to explore the changes in protein expression underlying the mechanisms of life span extension and antiaging caused by red ginseng extract (RGE) in Drosophila melanogaster. Methods: A proteomic approach of two-dimensional polyacrylamide gel electrophoresis (2-DE) was used to identify the differential abundance of possible target proteins of RGE in D. melanogaster. The reliability of the 2-DE results was confirmed via Western blotting to measure the expression levels of selected proteins. Proteins altered at the expression level after RGE treatment (1 mg/mL) were identified by matrix-assisted laser desorption/ionization-time of flight tandem mass spectrometry and by searching against the National Center for Biotechnology nonredundant and Uniprot protein databases. The differentially expressed proteins were analyzed using bioinformatics methods. Results: The average survival life span of D. melanogaster was significantly extended by 12.60% with RGE treatment (1 mg/mL) compared to untreated flies. This followed increased superoxide dismutase level and decreased methane dicarboxylic aldehyde content. Based on the searching strategy, 23 differentially expressed proteins were identified (16 up-regulated and 7 down-regulated) in the RGE-treated D. melanogaster. Transduction pathways were identified using the Kyoto Encyclopedia of Genes and Genomes database, and included the hippo and oxidative phosphorylation pathways that play important roles in life span extension and antiaging process of D. melanogaster. Conclusion: Treatment with RGE in D. melanogaster demonstrated that mechanisms of life span extension and antiaging are regulated by multiple factors and complicated signal pathways.

• 대한두경부종양학회지
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• 제13권2호
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• pp.187-199
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• 1997

Thyroid carcinoma ranks low in incidence and as a cause of death when compared to carcinomas arising in the other site. With adequate surgical treatment, the prognosis of operable thyroid carcinoma is good. However, the extent of surgical resection in treatment of thyroid cancer remains still controversy. The aim of this study was to assess the results of thyroid cancer patients treated surgically and to analyze the prognostic factors affecting survival and to improve the survival rate. We retrospectively analyzed the outcome of a total of 278 thyroid cancer patients treated surgically at Inje University Paik Hospital from 1980 to 1995 and followed for 1 to 16 years. There were man in 47 and woman in 231 patients with age range of 14 to 79 years(mean 42 years). Histopathologic findings were papillary carcinoma in 233, follicular carcinoma in 33, mixed carcinoma in 7, medullary carcinoma in 2, and undifferentiated carcinoma in 3 patients, respectively. Operative procedures were unilateral lobectomy in 111, subtotal thyroidectomy in 100, and total thyroidectomy in 67 patients. Central node dissection was performed in 92, modified neck disseciton in 62, radical neck dissection in 28, and no node dissection in 96 patients. Thyroid hormone was administered for the period of 3 to 5 years to suppress endogenous TSH production. Overall 5-year survival rate according to Kaplan-Meier method was 91.1%. Independently, significant factors affecting the prognosis were age at diagnosis, tumor size, pathologic type, tumor stage, lymph node metastasis, angioinvasion, extrathyroidal extension, and 'risk' group category. but, the prognosis were not influenced by sex and capsular invasion. Patients at low risk or with small size carcinomas had long survival over 5 years with only lobectomy. Lymph node dissection was carried out with a limited type in no jugular metastasis, radical neck dissection was performed only therapeutically in proved jugular node metastasis. Fifteen patients were dead of tumor recurrence after surviving for three months to two and half years, and the cause of death was local recurrence in nine, bone metastasis in four and lung metastasis in two patients. In conclusion, more extensive surgery including total thyroidecotmy and systematic compartment-oriented dissection of the lymph node metastases in patient at high-risk group will results in better survival and lower recurrence rate.

• Asian Pacific Journal of Cancer Prevention
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• 제17권6호
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• pp.2995-2999
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• 2016

Background: Triple-negative breast cancer (TNBC) often presents as an interval cancer with short survival upon metastasis and thus represents an important clinical challenge. The present study investigated the clinicopathologic characteristics and long term survival outcome of early and locally advanced TNBC. Materials and Methods: Medical records were reviewed retrospectively for 148 consecutive confirmed cases of TNBC treated in a single unit at our centre. Demographic profile, tumor type, histopathology details, treatment and follow-up information was recorded and immunohistochemistry was performed. Results: Age group >50 years was associated with tumors of clinical stage 3 (53.8%), pathological stage 3 (46.2%), pathological grade 3 (45.7%), presence of extracapsular extension (ECE, 48.5%) and lymphovascular invasion (LVI, 64.9%). Locally advanced breast cancers (LABCs) were characterized by pathological stage 3 (96.2%), presence of ECE (100%) and absence of LVI (46.7%) as compared to early breast cancers (EBCs) which had higher incidence of lower stage tumors (100%), absence of ECE (82%) and presence of LVI (91.9%; p-value <0.001. Better relapse free survival was observed in patients with no axillary involvement (69%; p-value <0.001) and absence of ECE (64%; p-value <0.001). Improved overall survival was seen in patients with EBC (90%; p-value 0.008), clear axilla (86%; p-value <0.001), absence of ECE (87%; p-value <0.001) and negative lymph nodes (90%; p-value 0.006). Conclusions: TNBCs are aggressive tumors which show poor long term survival. Patients with TNBC benefit from chemotherapy, thus better and less toxic treatment options are needed. Identification of newer targets and development of targeted therapies are the need of the hour.

• 한국응용곤충학회지
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• 제62권3호
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• pp.183-191
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• 2023

베리류톱밥 발효기간중 톱밥내 온도변화와 발효기간에 따른 흰점박이꽃무지 유충의 발육특성을 조사한 결과 참나무톱밥에 비해 발효속도가 빠르고, 발효기간 50~70일이 유충 발육에 가장 적합하였다. 발효기간중 톱밥내 온도변화는 발효초기에 베리류톱밥이 참나무톱밥이 40℃이하로 경과한데 반하여 베리류톱밥은 60℃ 이상 고온으로 경과되면서 빠르게 발효가 되었고, 60일 이내에 안정화 되었다. 개체사육에서 발효기간별 흰점박이꽃무지 유충의 총 발육기간은 베리류톱밥은 30일간 발효에서 104.8일로 가장 길고, 유의차가 인정되었으며, 50~90일 발효는 90일 정도로 차이가 없었다. 참나무톱밥도 베리류톱밥과 마찬가지 경향이나, 유충 발육기간이 30일정도 길었다. 유충 령기별 발육기간은 베리류톱밥과 참나무 톱밥에서 차이가 컸고, 유의차가 인정되었다. 톱밥 발효기간에 따른 유충 무게는 베리류톱밥과 참나무톱밥 모두 발효기간이 긴 90일 발효에서 가장 가볍고, 발효기간 30~70일 발효에서는 차이가 없었다. 생존율은 개체사육에서는 95% 이상으로 발효기간에 따른 차이는 없었으나, 집단사육에서는 개체사육보다 생존율이 낮고, 발효기간 90일에서 가장 낮았다. 집단사육에서 출하기준인 2.5 g 이상 유충 비율은 베리류톱밥 발효기간 30~70일까지는 85% 정도로 차이가 없었지만, 발효기간 90일에서는 70%로 낮고, 유의차가 인정되었다. 참나무톱밥도 마찬가지 경향이며, 베리류톱밥에 비해 10%정도 낮았다. 또한, 베리류톱밥은 40~60일이면 유충의 무게가 2.5 g 이상이 되었고, 참나무 발효톱밥은 75~105일이 걸렸다.