대구 유니버시아드대회 자원봉사활동에 대한 만족도 연구

황성동,성희자,고강호,전보경,권현수 慶北大學校 社會科學大學 2003 社會科學 Vol.15 No.-

Recombinant canstatin inhibits angiopoietin‐1‐induced angiogenesis and lymphangiogenesis

Hwang‐,Bo, Jeon,Yoo, Ki Hyun,Park, Jong‐,Hwa,Jeong, Han‐,Sin,Chung, In Sik Wiley Subscription Services, Inc., A Wiley Company 2012 International journal of cancer: Journal internati Vol.131 No.2

<P><B>Abstract</B></P><P>We describe the effect of recombinant canstatin, the NC1 domain of the α2 chain of Type IV collagen, on suppression of angiogenesis and lymphangiogenesis both <I>in vitro</I> and <I>in vivo</I>. Recombinant canstatin produced from stably transformed <I>Drosophila</I> S2 cells reduced the expression of angiopoietin‐1 in hypoxia mimetic agent, CoCl<SUB>2</SUB>‐treated CT‐26 cells. Recombinant canstatin inhibited proliferation, tube formation and migration of human angiopoietin‐1 (rhAngpt‐1)‐treated human umbilical vein endothelial cells (HUVEC) and lymphatic endothelial cells (LEC). Recombinant canstatin suppressed the expression of Tie‐2 and vascular endothelial growth factor‐3 (VEGFR‐3) transcripts in rhAngpt‐1‐treated HUVEC and LEC, respectively. The inhibitory effect of recombinant canstatin on tumor growth was also investigated using a heterotopic CT‐26 colon carcinoma animal (BALB/c mice) model. Recombinant canstatin reduced the final volume and weight of tumors, and blood and lymphatic vessel densities of tumors, which were evaluated by CD‐31 and LYVE‐1 immunostaining. Immunohistochemical analysis showed that recombinant canstatin dramatically reduced the expression of angiopoietin‐1 in CT‐26 colon carcinoma‐induced tumor, but not the expression of VEGF‐C. Tie‐2 and VEGFR‐3 expressions were also reduced in recombinant canstatin‐treated tumors. These results indicate that recombinant canstatin has anti‐tumoral activities against CT‐26 colon carcinoma cells. Recombinant canstatin reduces the expression of angiopoietin‐1 in hypoxia‐induced CT‐26 cells and inhibits the angiogenic and lymphangiogenic signaling induced by angiopoietin‐1. Recombinant canstatin probably inhibits angiogenesis and lymphangiogenesis <I>via</I> suppression of the integrin‐dependent FAK signaling induced by angiopoietin‐1/Tie‐2 and/or VEGFR‐3.</P>

유아의 또래관계 증진을 위한 학급 단위 프로그램의 개발 및 효과 검증

도현심,김민정,박보경,황영은 이화여자대학교 생활환경대학 인간생활환경연구소 2007 인간생활환경연구소 논집 Vol.- No.5

The purpose of this study was to develop a program for improving peer relations of preschoolers and to investigate its effectiveness, which was held in the natural setting of a classroom. The contents are consisted of understanding emotion, controlling negative emotion, and improving self-esteem, communication skills, and prosocial behaviors. The participants for the study were 105 4-year-o1d preschoolers who were divided into two groups such as experimental and control groups. Among them, 57 children were assigned for the experimental group, and 48 children for the control group. The experimental group participated in the program for 40-50 minutes per day once a week for 12 weeks during both the spring and fall semesters, while the control group received no treatment. As compared to the control group, children in the experimental group showed a significant increase in peer acceptance after they participated in the program, especially for both semesters.

입자상 오염물질의 대기환경기준에 관한 연구

허정숙,남보현,황인조,김동술 경희대학교 환경연구소 1999 環境硏究 論文集 Vol.9 No.-

We provide various fundamental statistics for PM-10 based on air quality monitoring data('96-'98) operated by the Ministry of Environment. The purposes of this paper are to examine the distribution of PM-10 level computed on the basis of a reference method adapted by USEPA and to review national ambient air quality standards for particulate matter in Korea. When we calcualted the 3-year('96-'98) average of the annual mean PM-10 concentrations at 24 monitoring sites. 21 sites were not met 50㎍/m(annual PM-10 standard in USA). Especially. Duckchon-dong and Shinpyung-dong sites at Pusan were recorded the highest concentration. Also, when we considered the 3-year average of the 99^(th) percentile values, 14 sites including Ssangmun-dong at Seoul and Duckchon-dong at Pusan among 23 were classified non-attainment area exceeding 150㎍/m(24-hour PM-10 standard in USA). We suggest that the air quality standards for PM-10 and PM2.5 in Korea must be actually regulated based on scientific review and the public health.

연취급 근로자들의 사회 심리적 스트레스와 연노출 지표들간의 관련성

김용배,안현철,황보영,리갑수,황규윤,이성수,안규동,이병국 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1

목 적 : 연취급 근로자를 대상으로 사회 심리적 스트레스 수준을 알아보고 이를 기초자료로 활용하며 사회 심리적 스트레스와 연노출 지표들간의 관련성을 알아보고자 시도하였다. 방 법 ' 1차 연제련업종의 근로자 234명을 대상으로 일반적 특성, 사회 심리적 스트레스, 직업적 특성과 사회적 지지를 문진과 설문지를 통해 확인했으며 연노출 수준을 알기 위해 혈중 ZPP 농도, 혈중연농도, 요중 δ-ALA 배설량, 혈색소, 혈구용적치등을 측정했다. 결 과 : 단일변량 분석결과 혈중 연농도 수준과 직업적 특성에 따른 사회 심리적 스트레스는 유의한 차이가 있었으며 혈중 연농도가 증가함에 따라 스트레스 수준도 증가되는 경향을 나타냈다. 사회 심리적 스트레스와 연노출 지표 및 다른 변수들간의 관련성을 파악하기 위하여 상관분석을 실시한 결과 혈중 연농도만이 사회 심리적 스트레스와 양의 상관관계를 나타냈으며 유의했다. 결 론 : 고농도 연노출의 가능성이 있는 직종인 경우 기존의 연관련 자각증상에 대한 설문조사와 함께 사회 심리적 스트레스 측정도 병행하여 실시하는 것이 연에 의한 건강장해를 조기에 발견하고 예방하는데 필요하다. Objectives : This study was carried out to assess psychosocial distress of lead workers and to examine the relationship between lead exposure indices and psychosocial distress. Methods The study design was cross-sectional and research subjects were 234 lead workers in primary smelting industry. General characteristics, job characteristics and social support were obtained by self-administered questionnaire and history taking. Psychosocial distress was measured using PWI(Psychosocial Well-being Index), a 45-item self-administered instrument. Blood lead(PbB), zinc protoporphyrin(ZPP), δ-aminolevulinic acid in urine (ALAU) were selected as indicators of lead exposure. Results : There was significant difference in PWI according to lead exposure level and job characteristics. The results of correlation analysis showed that PWI was significantly correlated with PbB (r=0.203, p=0.002). Conclusions : Our results supported the association between lead exposure and psy-chosocial distress. The inclusion of psychosoclal distress measurement as a special health examination for lead workers was highly recommended for the effective health manage-ment.

2.9% 과산화수소를 함유한 부착형 미백제의 임상적 효능과 안정성에 관한 연구

박은숙,성소래,홍성태,김지은,이소영,황수연,이신재,진보형,손호현,조병훈 大韓齒科保存學會 2006 Restorative Dentistry & Endodontics Vol.31 No.4

2.9%의 과산화수소를 함유한 시험용 부착형 미백제(Medison dental whitening strip, Samsung medical Co.,Anyang,Korea)를 실험군 피험자 23명, 시험용 미백제에서 과산화수소를 제외한 동일한 제재를 대조약으로 대조군 피험자 24명에게 매일 1시간 30분씩, 2주간 적용하여 임상적 효능과 안전성을 평가하였다. 미백 효과는 Shade Vision, Chroma Mete 및 Vitapan classical shade guide를 이용하여 색변화를 측정하여 다음과 같은 결론을 얻었다. 1. 실험군에서의 전체 치아의 색변화량(ΔE^(*))은 세 가지 측정법에서 모두 대조군에 비해 통계적으로 유의한 차이를 보였고 (p < 0.05). 쉽게 인지할 수 있는 정도였다. 2. 색변화는 색좌표 상에서 명도의 증가와 녹색조 및 청색조로의 변화에 의해 얻어졌다. 3. 치아별로는 어두운 견치의 색변화량이 가장 컸고, 측절치, 중절치 순으로 감소하였다. 4. 47명의 피험자 중 5명이 경도의 과민증을 경험하였으나 곧 완화되었다, 치은염증지수와 전기치수검사 결과 시험 전후에 차이가 없어 안전성을 확인하였다. This study evaluated the effectiveness and safety of an experimental bleaching strip (Medison dental whitening strip, Samsung medical Co., Anyang, Korea) containing 2.9% hydrogen peroxide. Twenty-three volunteers used the bleaching strips for one and a half hour daily for 2 weeks. As control group, the same strips in which hydrogen peroxide was not included were used by 24 volunteers with the same protocol. The shade chang (ΔE^(*), color differnce) of twelve anterior teeth was measured using Shade Vision (X-Rite Inc., S. W. Grandville, MI, USA), Chroma Meter (Minota Co., Ltd. Osaka, Japan) and Vitapan classical shade guide (Vita Zahnfabrik, Germany). The shade change of overall teeth in the experimental group was significantly greater than that in the control group (p < 0.05) and was easily perceivable. The change resulted from the increase of lightness (CIE L^(*) value) and the decrease of redness (CIE a^(*) value) and yellowness (CIE b^(*) value). The shade change of individual tooth was greatest in canine, can smallest in central incisor. The safety of the bleaching strip was also confirmed. 〔J Kor Acad Cons Dent 31(4):269-281, 2006〕

크롬 함유 페인트 분무작업자에서 발생한 비중격 천공

정희경,김두희,최병순,임현술,신용철,황보근 東國大學校醫學硏究所 1997 東國醫學 Vol.4 No.-

크롬은 산업에서 널리 사용되고 있으나 접촉성 피부염, 점막 자극, 비중격 천공, 천식, 폐암 등 건강에 영향을 미칠 수 있는데 크롬 및 그 화합물의 원자가, 수용성, 농도, 산성도, 폭로기간 및 경로에 따라 독성이 다르다. 약 5개월간 크롬에 폭로된 2명의 근로자에서 비중격 천공이 발생하여 35명 근로자의 작업조건과 건강상태를 조사하였다(페인트 분무 판넬부서 14명, 서스부서 16명, 기타 부서 5명). 공기 중 총크롬의 농도는 0.103-0.318 mg/m³이었고, 6가 크롬농도는 자동분무 중에 0.001-0.060 mg/m³, 수동분무 중에 0.029-0.226 mg/m³이었다. 모든 근로자에서 소변의 크롬농도는 50㎍/L를 넘지 않았으나, 혈액의 크롬농도는 3명에서 3㎍/dL를 초과하였다. 서스부서보다 판넬부서 근로자에서 비강의 미란이나 가피가 더 많이 발견되었다(교차비 7.0). 부서별로는 소변이나 혈액의 크롬농도가 차이가 없었고 비강소견에 따라서도 소변의 크롬농도가 차이가 없었으나, 혈액의 크롬농도는 비강의 미란이나 가피가 있는 경우 유의하게 높았다. 비중격 천공이 발생한 2명의 근로자에서 크롬에 의해 발생할 수 있는 폐나 비갑개, 간 및 신장의 이상소견과 천식은 발견되지 않앗다. 본 사업장에서 크롬에 의한 건강장애를 예방하기 위해서는 수동분무를 자동분무로 바꾸고 분무한 페인트가 완전히 건조한 후 다음 작업을 하여야 한다. 또한 크롬 미스트가 흡입되지 않도록 적절한 호흡기 보호구를 철저히 착용하여야 한다. After discovery, chromium has been widely used in industry. Health hazards of chromium and its compounds are contact dermatitis(allergic and irritant), mucosal irritation, nasal septal perforation, asthma, and lung cancer. Their toxicity depends on valency, solubility, concentration, PH, exposure duration and route. Nasal septal perforation was developed in two workers exposed to chromium for about 5 months, so we surveyed the working condition and health status of 35 workers(14 workers in paint spraying panel line, 16 in sus line and 5 in other line). Air concentration was as follows: total chromium 0.103-0.318 mg/m³, Cr(VI) 0.001-0.060 mg/m³in automatic spraying and 0.029-0.226 mg/m³in manual spraying. Urine chromium concentration was not over 50 ㎍/L in all workers, but blood chromium concentration was over 3 ㎍/dL in 5 workers. Erosion or crust of nasal cavity was detected more frequently in panel line workers than sus line workers(odds ratio=7.0). But blood or urine concentration of chromium was not different according to the job. Urine concentration of chromium was not different irrespective of nasal cavity finding, but blood concentration was high in the workers with erosion or crust of nasal cavity. Two workers with nasal septal perforation did not have any other diseases which can be developed by chromium exposure. To prevent health hazards of chromium in this factory, manual spraying process has to be changed to automatic process, the next process done after paint was absolutely dried, and respiratory protector should be weared to prevent inhalation of chromium mist effectively.

Auranofin, an inhibitor of thioredoxin reductase, induces apoptosis in hepatocellular carcinoma Hep3B cells by generation of reactive oxygen species

Hwang-Bo, Hyun,Jeong, Jin-Woo,Han, Min Ho,Park, Cheol,Hong, Su-Hyun,Kim, Gi-Young,Moon, Sung-Kwon,Cheong, Jaehun,Kim, Wun-Jae,Yoo, Young Hyun,Choi, Yung Hyun 'AEPress, s.r.o.' 2017 General physiology and biophysics Vol.36 No.2

ICR 마우스를 이용한 산수유 건피 추출물의 단회 경구투여 독성시험

황보현(Hyun Hwang-Bo),권다혜(Da Hye Kwon),김민영(Min Young Kim),지선영(Seon Yeong Ji),최은옥(Eun Ok Choi),김성옥(Sung Ok Kim),정지숙(Ji-Suk Jeong),홍수현(Su Hyun Hong),최성현(Sung Hyun Choi),박철(Cheol Park),최영현(Yung Hyun Choi) 한국생명과학회 2019 생명과학회지 Vol.29 No.1

산수유(Corni Fructus)는 한국을 포함한 아시아 지역에서 오랫동안 전통 의약제로 광범위하게 사용되어 왔다. 최근 연구에 따르면 산수유는 항염증, 항산화, 면역기능 조절 및 항암활성 등과 같은 많은 효능을 가지는 것으로 알려져 있다. 그러나 산수유에 대한 독성 및 안전성에 대해서는 거의 알려져 있지 않은 실정이다. 따라서 본 연구에서는 산수유 열수 추출물(CF)을 대상으로 안전성을 확인하기 위하여 단회 경구 투여에 따른 독성 시험을 실시하였다. 이를 위하여 ICR 마우스를 대상으로 1,000, 2,000 및 5,000 mg/kg의 CF를 경구 투여하였으며, 투여 후 14일 동안의 치사율, 체중 변화, 임상증상, 음수율 및 사료섭취량과 함께 부검 소견, 장기무게 변화, 혈액학 및 혈액생화학적 검사를 실시하였다. 실험 결과에 의하면 CF 투여에 따른 치사율, 임상증상, 체중 및 부검 소견 상의 유의적인 변화는 관찰되지 않았다. 또한 CF 투여에 따른 각 장기의 무게, 혈액학적 및 혈청학적 임상 화학적 지표에도 유의적인 변화는 관찰할 수 없었다. 따라서 CF 단회 경구 투여에 따른 치사량이 5,000 mg/kg 이상일 것으로 추정되어 ICR 마우스에 대하여 급성 독성이 없는 비교적 안전한 물질이라는 것을 알 수 있었으며, 향후 천연 식의 약 소재로서의 효능 규명을 통한 활용이 기대된다. Herbal medicines are widely used as therapeutic products in many countries. Corni fructus (CF), the dried ripe sarcocarp of Cornus officinalis Sieb. et Zucc (Cornaceae), has been used for thousands of years in traditional medicine and has been reported to be effective for the prevention and treatment of various diseases, such as kidney diseases and diabetes. Recent research on CF has documented a wide spectrum of therapeutic properties, which include anti-inflammatory, ant-oxidative, immunomodulatory, and anti-cancer effects. However, there is no information on its safety. Therefore, in this study, the toxicity of water extract of CF to ICR mice was investigated. The mice received a single dose of water extract of CF (1,000, 2,000, and 5,000 mg/kg of body weight) via the oral route. Mortality, clinical signs, body weight changes, gross findings, and weights of the principal organs after 14 d were then assessed. The results revealed no adverse effects of CF as determined by clinical signs, body weights, or organ weights and no gross pathological findings in any of the treatment groups. These results suggest that the 50% lethal dose and approximated lethal dose of CF extract is over 5,000 mg/kg. The findings provide scientific evidence for the safety of CFs.

Oral capsule administration in Sprague-Dawley rats

Hwang-Jin Jeon,Hae-Jin Yoon,Bo Hyun Lee,Hyun Sook Lee,Kang-Hyun Han,Yong-Bum Kim 한국실험동물학회 2018 한국실험동물학회 학술발표대회 논문집 Vol.2018 No.7