Antimutagenic Effects of Ginsenoside Rb$_1$, Rg$_1$ in the CHO-K1 Cells by Benzo[a]pyrene with Chromosomal Aberration Test and Comet Assay

Kim, Jong-Kyu,Kim, Soo-Jin,Rim, Kyung-Taek,Cho, Hae-Won,Kim, Hyeon-Yeong,Yang, Jeong-Sun The Korean Society of Toxicogenomics and Toxicopro 2009 Molecular & cellular toxicology Vol.5 No.2

The usage and types of chemicals are advancing, specializing, large-scaled increasing, and new chemical exposed workers are concerning to occupational disease. The generation of reactive oxygen in the body from carcinogen, mutation and DNA damage in cancer is protected by natural antioxidants (phytochemicals) with antimutagenic effect. There were many reports of ginsenoside Rb$_1$, Rg$_1$ grievances of the genetic mutation to suppress the effect confirm the genetic toxicity test with chromosomal aberration test and the Comet (SCGE) assay confirmed the suppression effect occurring chromosomal DNA damage. We had wanted to evaluate the compatibility and sensitivity between the chromosomal aberration (CA) test and the Comet assay. We used the CA test and Comet assay to evaluate the anti-genotoxicity of ginsenoside Rb$_1$ and Rg$_1$, in CHO-K1 (Chinese hamster ovary fibroblast) cell in vitro, composed negative control (solvent), positive control (benzo[a]pyrene), test group (carcinogen+variety concentration of ginsenoside) group. The positive control was benzo[a]pyrene (50 $\mu$M), well-known carcinogen, and the negative control was the 1 % DMSO solvent. The test group was a variety concentration of ginsenoside Rb$_1$, Rg$_1$ with 10$^{-8}$%, 10$^{-6}$%, 10$^{-4}$%, 10$^{-2}$%, 1%, 10%. In chromo-somal aberration test, we measured the number of cells with abnormally structured chromosome. In Comet assay, the Olive tail moment (OTM) and Tail length (TL) values were measured. The ratio of cell proliferation was increased 8.3% in 10$^{-8}$%, 10$^{-6}$%, 10$^{-4}$%, 10$^{-2}$%, 1%, 10% Rb$_1$ treated groups, and increased 10.4% in 10$^{-10}$%, 10$^{-8}$%, 10$^{-6}$%, 10$^{-4}$%, 10$^{-2}$%, 1% Rg$_1$ treated groups. In the CA test, the number of chromosomal aberration was decreased all the Rb$_1$ and Rg$_1$ treated groups. In the Comet assay, the OTM values were decreased in all the Rb$_1$ and Rg$_1$ treated groups. To evaluate the compatibility between CA and Comet assay, we compared the reducing ratio of chromosomal abnormalities with its OTM values, it was identified the antimutagenicity of ginsenoside, but it was more sensitive the CA test than the Comet assay. Ginsenoside Rb$_1$ and Rg$_1$ significantly decrease the number of cells with chromosomal aberration, and decrease the extent of DNA migration. Therefore, ginsenoside Rb$_1$, Rg$_1$ are thought as an antioxidant phytochemicals to protect mutagenicity. The in vitro Comet assay seems to be less sensitive than the in vitro chromosomal aberration test.

LC, Acute : O-061 ; Mode of cirrhosis related complication in Korean patients with liver cirrhosis -A prospective multicenter cohort study

( Hyun Young Woo ),( Jeong Won Jang ),( Sang Gyune Kim ),( Chang Hyeong Lee ),( Tae Yeob Kim ),( Won Young Tak ),( Sung Kyu Choi ),( Mong Cho1 ),( Jong Young Choi ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-

Background: Cirrhosis-related complications are indications for transplantation. However, the mode of complication has not been evaluated so far. To better address this issue, we investigated the mode of cirrhosis related complication and impact of these complications on survival in prospective, multicenter, inception cohort study of subjects with liver cirrhosis presenting with the first onset of decompensated complication. Methods: In this observational study, 1515 patients with the confirmed onset time of the first decompensated complication were enrolled. The mortality risk of cirrhosis-related complications, including ascites, portal hypertensive gastrointestinal bleeding (PHGB), spontaneous bacterial peritonitis (SBP), hepatic encephalopathy (HE), hepatorenal syndrome (HRS), was analyzed in these cirrhotic patients. Result: As the first complication, ascites was the most frequent (53.8%), followed PHGB (36.2%), HE (7.6%), SBP (1.7%) and HRS (0.7%). During follow-up (mean 32±47 months), 484 (31.9%) experienced subsequent decompensations and the proportion of subsequent complication was consistently changed; the proportion of HE, SBP, HRS increased as time progressed. The interval between subsequent decompensative events was progressively shortened. The mortality rate according to the first complication was as follows; Ascites =PHGB> HE=SBP>HRS. The mortality rate of patients experienceing subsequent complication was significantly higher than those without subsequent complication. According to the kinds of subsequent complication, survival of HE was also higher than HRS but lower than ascites or PHGB and similar to that of SBP and this difference of survival disappeared after repeated complication. Conclusion: The mortality risk correlated with initial complication and the risk increases as the number of complication episodes is repeated. Patient`s mean age was 56±11.50 years and 72.1% was male. The cause of liver cirrhosis is hepatitis B virus (38.6%), alcohol (35.5%) and hepatitis C virus (8.9%).

Pollen Viability of Common Buckwheat (Fagopyrum esculentum Moench.) in in vitro Germination and its Application to Male Gametophyte Isolation

Woo, Sun-HeeㆍKeun-Yook ChungㆍHeung-Tae, KimㆍYong-Gu, ChoㆍHong-Sig, KimㆍBeom-Heon, Songㆍ Chul-Won, Lee and Seung-Keun Jong 忠北大學校 農業科學硏究所 2004 農業科學硏究 Vol.21 No.-

-본문참고-

알레르기 ; 알레르기 환자에서 한방 이외의 대체 요법의 사용 현황에 대한 다기관 조사

이현정 ( Hyun Jung Lee ),이재현 ( Jae Hyun Lee ),이용원 ( Yong Won Lee ),김철우 ( Cheol Woo Kim ),동헌종 ( Hun Jong Dhong ),박해심 ( Hae Sim Park ),조영주 ( Young Joo Cho ),조진희 ( Jin Hee Cho ),조상헌 ( Sang Heon Cho ),편복양 ( 대한내과학회 2011 대한내과학회지 Vol.80 No.1

목적: 한국에서 알레르기 질환 치료를 위한 한방 치료뿐만 아니라 대체 요법이 많이 이용되고 있으며, 그 현황에 대하여 다기관 조사를 시행하였다. 방법: 10개의 대학병원 외래로 내원한 647명의 알레르기 환자를 대상으로 설문조사를 시행하였으며, 이 중 510명이 한방 이외의 대체 요법에 응답하였다. 이환되어 있는 알레르기 질환은 천식(50.0%), 알레르기 비염(36.0%), 아토피 피부염(36.0%), 그리고 두드러기(9.3%)였다. 각각 환자들에게 12 문항의 설문조사를 시행하였으며, 한방 이외의 대체 요법의 사용 빈도 및 종류, 대체 요법에 의지하게 된 이유, 비용, 그리고 치료효과에 대한 의견을 물어 보았다. 결과: 16.7%의 알레르기 환자에서 한방 이외의 다른 대체 요법을 받았으며, 평균 1.6종의 한방 이외의 대체 요법을 받았다. 가장 많이 의지하는 대체 요법은 민간 식이요법 (48.6%)이었고, 그 다음이 아로마 요법(23.8%), 지압(14.3%), 건강 호흡법(7.6%), 마인드 컨트롤(5.7%), 목욕요법(5.7%) 순이었다. 대체 요법을 받은 환자 중 마인드 컨트롤(50%), 식이요법(50%), 그리고 건강 호흡법(75%)의 경우 치료 효과가 만족스럽다는 응답이 높았으며, 목욕요법, 아로마 요법, 그리고 지압은 만족도가 각각 33.3%, 28.0%, 26.7%로 저조하였다. 대체 요법 사용자의 63.6%가 5회 미만의 대체 요법을 받았고, 91.8%가 1년 이내로 치료받았으며, 1인당 평균 연 37 만원을 지출하였다. 대체 요법을 선택한 가장 큰 이유는 체질이 개선될 수 있을까 해서(44.2%)였으며, 대체 요법이 몸에 부담이 없어서(31.4%), 면역기능이 강화되어서(22.9%) 순으로 나타났고, 15.7%는 양약치료가 도움이 되지 않아서 대체 요법을 선택하였다고 응답하였다. 결론: 한국에서 알레르기 환자의 상당수가 한방뿐만 아니라 여러 가지의 대체 요법을 사용하고 있음을 알 수 있었다. 대체 요법의 사용 빈도가 증가하고 그 종류가 다양함을 고려할 때, 의료진은 대체 요법의 현황에 대하여 정확히 인지하고 이에 대해 관심을 가지고 환자를 대하여야 하며 올바른 알레르기 질환 치료법에 대해 환자뿐만 아니라 의료인에게 교육하는 것이 필요하다. Background/Aims: The use of unproven complementary/alternative medicine (CAM) to treat allergies is popular in Korea. We conducted a multicenter survey of the current use of CAM other than herbal medication in Korean allergy patients. Methods: This study enrolled 510 adults with allergic diseases, including asthma, allergic rhinitis, atopic dermatitis, and chronic urticaria, from ten hospitals. They underwent a structured questionnaire interview and clinical assessment of the prevalence, motivation, costs, and subjective assessment of CAM. Results: Of the patients, 16.7% used at least one type of CAM to treat their allergic diseases. Common types of CAM were diet (48.6%), aroma therapy (23.8%), massage (14.3%), breathing exercises (7.6%), baths (5.7%), and mind control (5.7%). The therapeutic effects of CAM included improved in patients using mind control (50%), diet (50%), breathing exercises (75%), and baths (33.3%), but worse in patients using aroma therapy (28%), and massage (26.7%). About 36.4% of the patients used CAM more than four times per year, and the average cost per CAM user was 370,000 won/year. The main reason for trying CAM was `hope to improve my constitution`. Conclusions: CAM is used widely for treating allergic diseases in Korea. Detailed knowledge of CAM and patient education are important. Further studies of the clinical efficacy of CAM are needed. (Korean J Med 2011;80:68-77)

자동착유시스템 설치농가의 설치 후 만족도에 관한 실태조사

기광석,김종형,정영훈,김윤호,박성재,김상범,이왕식,이현준,조원모,백광수,김현섭,권응기,김완영,여준모,Ki, Kwang-Seok,Kim, Jong-Hyeong,Jeong, Young-Hun,Kim, Yun-Ho,Park, Sung-Jai,Kim, Sang-Bum,Lee, Wang-Shik,Lee, Hyun-June,Cho, Won-Mo,Baek, Kwang- 한국축산환경학회 2011 축산시설환경학회지 Vol.17 No.1

본 시험은 국내에 도입되기 시작한 AMS에 대하여 설치 동기, 설치 후 우유생산량과우유품질, AMS 설치계기 및 설치 후 만족도, AMS 운영상 애로점 및 건의사항 등을 조사 분석하였다. 설치 계기가 무엇인가에 대한 응답비율은 노동력 부족 44%, 체험목장으로 전환 25%, 소들의 고능력화에 대응 19% 순이었으며 기타 6%였다. AMS 설치농가의 사육경력은 평균 24.9년, 평균 연령은 53.2세로 나타났으며 가족노동력만으로 경영하는 목장이 조사농가의 38%, 고용+자가노동력 형태의 목장이 63%로 나타났다. 목장의 산유능력은 두당 평균 유량은 1일 $30.9{\ell}$, 평균 유지율 3.9%, 세균수는 9.1천개/$m{\ell}$ 수준이었다. 후계자 육성에 대한 질문에 매우 그렇다라고 응답한 비율은 68%였으며, 보통 18%, 아니다와 매우 아니다라고 응답한 비율은 18%로 나타났다. 시스템 운영현황 및 애로사항을 파악하기 위하여 AMS의 프로그램 주운영자에 대한 질문에 본인 44%, 부인 6%, 자녀 또는 후계자사람이 44%, 기타 6%나 되었다. AMS 운영상 가장 어려운 점에 대한 조사결과, 기기 작동 및 복잡한 프로그램 운영이 각각 31%로 가장 많았다. 그 외 기계 에러 및 고장에 대한 애로사항이 25%이였다. 도태원인에 대하여 유방염 28%, 번식장애 20%, 발굽질환 19%, AMS에 부적합한 유두 배열 12%, 분만 후 대사성질병 7%, 노산 등 기타 14%였다. 시스템 설치 후 유지보수 계약 체결유무 및 비용에 대하여 유지보수 계약 56%, 유지 보수 계약 미체결 44%이었다. 유지보수 계약 평균 계약비용은 연간 658만원 정도였다. 시스템 설치 후 항목별 만족도에 대하여 5점 만점에 3.9점이었으며, 노동력 절감 3.7점, 업체의 A/S 3.6점, 산유량 증가 3.2점, 원유의 체세포 수 저감 2.8점이었다. 시스템 설치 시 고려사항 및 건의사항에 대하여 고가의 장비를 효율적으로 사용하기 위하여 젖소의 유방과 유두 배열이 적합하도록 젖소를 선발하는 것, 시스템을 운용할 수 있는 능력, 적합한 환경, 재정적 능력과 부지 확보, 지속적인 관찰 등이 권장되어야 할 것으로 나타났으며, 설치 업체에 대해서는 컨설팅이 체계화될 필요가 가장 높게 나타났으며 이어서 보다 저렴한 설치와 서비스의 체계화를 요구하는 결과를 보였다. The present survey was conducted to provide basic information on automatic milking system (AMS) in relation to purchase motive, milk yield and quality, customer satisfaction, difficulties of operation and customer suggestions, etc. Purchase motives of AMS were insufficient labor (44%), planning of dairy experience farm (25%), better performance of high yield cows (19%) and others (6%), respectively. Average cow performance after using AMS was 30.9l/d for milk yield, 3.9% for milk fat, 9,100/ml for bacterial counts. Sixty-eight percentage of respondents were very positive in response to AMS use for their successors but 18% were negative. The AMS operators were owner (44%), successor (44%), wife (6%) and company worker (6%), respectively. The most difficulty (31%) in using AMS was operating the system and complicated program manual. The rate of response to system error and breakdown was 25%. The reasons for culling cow after using AMS were mastitis (28%), reproduction failure (19%), incorrect teat placement (12%), metabolic disease (7%) and others (14%), respectively. Fifty-six percentages of the respondents made AMS maintenance contract and 44% did not. Average annual cost of the maintenance contract was 6,580,000 won. Average score for AMS satisfaction measurement (1 to 5 range) was 3.2 with decrease of labor cost 3.7, company A/S 3.6, increase of milk yield 3.2 and decrease of somatic cell count 2.8, respectively. Suggestions for the higher efficiency in using AMS were selecting cows with correct udder shape and teat placement, proper environment, capital and land, and attitude for continuous observation. Systematic consulting was highly required for AMS companies followed by low cost for AMS setup and systematization of A/S.

Serum TSH Level in Healthy Koreans and the Association of TSH with Serum Lipid Concentration and Metabolic Syndrome

( Yeo Kyung Lee ),( Jo Eun Kim ),( Hyun Ju Oh ),( Kyung Sun Park ),( Soo Kyung Kim ),( Seok Won Park ),( Moon Jong Kim ),( Yong Wook Cho1 ) 대한내과학회 2011 The Korean Journal of Internal Medicine Vol.26 No.4

Background/Aims: The proper treatment of subclinical hypothyroidism and the normal range of serum thyroid stimulating hormone (TSH) concentration are intensely debated. However, few reports have investigated TSH concentrations in Asian ethnic groups. Therefore, the present study was designed to define the TSH reference range in a Korean population and to investigate the metabolic significance of TSH concentration. Methods: We enrolled patients who underwent medical examination at the CHA Bundang Medical Center. Anthropometric data were evaluated, and serum TSH, free T4, and lipid profiles were assayed. Results: A total of 7,270 subjects were included. Mean TSH concentration of the study population was 1.82 ± 0.95 mU/L, and we observed a sex-related difference in TSH concentration (male, 1.67 ± 0.87 mU/L; female, 2.02 ± 1.01 mU/L; p < 0.01). When the 2.5 and 97.5 percentiles were calculated, 95% TSH reference limits were 0.52-4.29 mU/L. TSH concentration was higher in elderly subjects, during winter, in postmenopausal women, and in obese males. Moreover, TSH showed significantly positive correlations with serum total cholesterol, triglyceride, and low density lipoprotein cholesterol regardless of sex, age, season, obesity, or menopausal status (all p < 0.01). Finally, TSH concentration was positively related to the prevalence of metabolic syndrome. Conclusions: We demonstrated the association between TSH concentration within the normal reference range and serum lipid levels. TSH concentration varies according to sex, age, season, and body mass index (only in males). Moreover, high normal TSH levels were significantly associated with an increased prevalence of metabolic syndrome, which may be of importance when evaluating subjects with high normal TSH concentration.

Fabrication of TiO₂/Cu hybrid composite films with near zero TCR and high adhesive strength via aerosol deposition

Cho, Myung-Yeon,Lee, Dong-Won,Kim, Won-Jung,Kim, Yong-Nam,Koo, Sang-Mo,Lee, Daeseok,Moon, Kyoung-Sook,Oh, Jong-Min Elsevier 2018 CERAMICS INTERNATIONAL Vol.44 No.15

<P><B>Abstract</B></P> <P>Room-temperature fabrication of TiO<SUB>2</SUB>/Cu composite films for embedded passive components were attempted via aerosol deposition process. XRD analysis and observation of internal microstructures revealed that TiO<SUB>2</SUB>/Cu composite films using 500 nm-sized TiO<SUB>2</SUB> had further tight bonding between particles compared to 25 nm-sized TiO<SUB>2</SUB>, due to effect of initial TiO<SUB>2</SUB> particle size on densification of internal microstructures. Then, to optimize their adhesive strength and temperature coefficient of resistance (TCR), electrical and mechanical properties of TiO<SUB>2</SUB> (500 nm)/Cu composite films with different content of TiO<SUB>2</SUB> were evaluated for applications as advanced composite film resistors. Results showed that TiO<SUB>2</SUB>/Cu (50 wt%/50 wt%) composite films had sufficient electrical resistivity (5.8 ×10<SUP>−3</SUP> Ω cm), excellent near-zero TCR (−3 ppm/℃), and improved adhesive strength (~ 7.37 N/mm<SUP>2</SUP>) resulting from proper coexistence of anchoring bonds and mechanical interlocking formed during deposition.</P>

KOMPSAT-2 RF COMPATIBILITY TEST FOR S-BAND

Cho Seung-Won,Youn Young-Su,Choi Jong-Yeon,Choi Seok-Weon 한국우주과학회 2004 한국우주과학회보 Vol.13 No.2

AKD Sizing Mechanism (Ⅰ) - Effect of Water on AKD Reactivity -

Won Sung Seo,Nam Seok Cho,Jong Ho Shin 한국펄프·종이공학회 1999 한국펄프·종이공학회 학술발표논문집 Vol.2 No.-

What factors affect discordance between physicians and patients in the global assessment of disease activity in rheumatoid arthritis?

Cho, Soo-Kyung,Sung, Yoon-Kyoung,Choi, Chan-Bum,Bang, So-Young,Cha, Hoon-Suk,Choe, Jung-Yoon,Chung, Won Tae,Hong, Seung-Jae,Jun, Jae-Bum,Kim, Jinseok,Kim, Tae-Hwan,Kim, Tae-Jong,Koh, Eun-Mi,Lee, Hye-S Informa UK (Taylor Francis) 2017 Modern Rheumatology Vol.27 No.1