• 한국작물학회지
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• 제59권4호
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• pp.498-504
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• 2014

Potato virus Y (PVY) and potato leafroll virus (PLRV) are among the most damaging potato viruses and prevalent in most potato growing areas. In this study, cryopreservation was used to eradicate PVY and PLRV using two cryogenic methods. Potato shoot tips proliferated in vitro were cryopreserved through droplet-vitrification and encapsulation-vitrification using plant vitrification solution 2 (PVS2; 30% glycerol + 15% dimethyl sulfoxide + 15.0% ethylene glycol + 13.7% sucrose) and modified PVS2. Both cryogenic procedures produced similar rates of survival and regrowth, which were lower than those from shoot tip culture alone. The health status of plantlets regenerated from shoot tip culture alone and cryopreservation was checked by reverse transcription-polymerase chain reaction. The frequency of virus-free plants regenerated directly from highly proliferating shoot tips reached 42.3% and 48.6% for PVY and PLRV, respectively. In comparison, the frequency of PVY and PLRV eradication after cryopreservation was 91.3~99.7% following shoot-tip culture. The highest cryopreserved shoot tip regeneration rate was observed when shoot tips were 1.0~1.5 mm in length, but virus eradication rates were very similar (96.4~99.7%), regardless of shoot tip size. This efficient cryotherapy protocol developed to eliminate viruses can also be used to prepare potato material for safe long-term preservation and the production of virus-free plants.

• 한국산림과학회지
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• 제51권1호
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• pp.51-55
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• 1981

우리나라 잣나무털녹병(病)의 중간기주(中間寄主)인 송이풀류(類)를 제거(除去)하기 위(爲)하여 1975년(年)부터 몇 가지 제초제(除草劑)을 산지(山地)에 자생(自生)하는 송이풀류(類)에 처리(處理)하여 다음의 결과(結果)를 얻었다. 1. Roundup은 주위(周圍)의 초(草), 목본류(木本類)에 약해(薬害)를 주었으나 송이풀제거용(除去用) 제초제(除草劑)로서 가장 효과(効果)가 있었다. 2. Roundup의 송이풀 제거효과(除去効果)는 처리(處理) 1 년후(年後)에 100%, 2 년후(年後)에는 65~92%의 밀도감소효과(密度減少効果)가 있었다. 3. 2.4-D, Gramoxone, 2. 4. 5-T 및 Para-col은 처리당년도(處理當年度)에 송이풀의 경엽제거(茎葉除去)는 가능(可能)하였으나 익년도(翌年度) 봄에 재발순(再發筍)되었다. 4. 제초제(除草劑)의 살포시기(撒布時期)는 5~6月(송이풀발순완료기(發筍完了期))보다 완전(完全)히 성숙(成熟)된 8월하순(月下旬)에 살포(撒布)하는 것이 효과적(効果的)이였다.

• 대한한방내과학회지
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• 제33권1호
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• pp.39-53
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• 2012

Objectives : Many studies have shown that helicobacter pylori (H. pylori) infection is associated with gastroduodenal diseases. The purpose of this report was to evaluate recently published research on the influence of oriental herbal medicine on H. pylori infections. Methods : Recently published literature were systematically compared with their findings of how oriental herbal medical treatment affects H. pylori-associated disease. Results : The eradication rate of H. pylori in oriental herbal medicine groups was 66.93% while it was 66.02% in western medicine groups. In oriental herbal plus western medicine groups, interestingly, the rate increased to 84.78%. On the other hand, the total treatment efficacy rate of H. pylori in oriental herbal medicine groups was 91.27%. The treatment efficacy rate in oriental herbal plus western medicine groups rose to a record 93.22%, which was 15.34% higher than the rate in western medicine groups. In addition, the rate of adverse effects was 2.71%, 4.85%, 15.80% in oriental herbal medicine, western medicine, and oriental herbal plus western medicine groups, respectively. Diarrhea was most frequently observed in oriental herbal medicine groups, while nausea was most frequently observed in the other groups. Conclusions : The results of this study showed that herbal medicinal treatment can increase the rate of H. pylori eradication and improve H. pylori-related gastrointestinal symptoms. These findings suggest that herbal medicine can solve the problems including side effects due to antibiotic resistance of standard triple therapy.

• Asian Pacific Journal of Cancer Prevention
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• 제15권22호
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• pp.9905-9908
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• 2014

Background: Helicobacter pylori (H. pylori) is the most common chronic infectious agent in the stomach. Most importantly, it may lead to atrophy, metaplasia and cancer. The aim of this study was to investigate the incidence of H. pylori infection and to detect early mucosal changes that may lead to malignant degeneration in children. Materials and Methods: Children who underwent upper gastrointestinal endoscopy were included. Familial history of gastric cancer was noted. Endoscopic examinations were performed by a single pediatric gastroenterologist. A minimum of three biopsy samples were collected during endoscopy. The patients were accepted as H. pylori infected if results of biopsies and rapid urease test were both positive. Biopsies were evaluated for the presence and degree of chronic inflammation, the activity and severity of gastritis, glandular atrophy and intestinal metaplasia. Results: A total of 750 children (388 boys, 362 girls) were evaluated in our study, with a mean age of 10.1 years. A total of 390 patients (52%) were found to be infected with H. pylori. Among the H. pylori infected patients, 289 (74%) were diagnosed to have chronic superficial gastritis, 24 (6.2%) had gastric atrophy. Most strikingly, intestinal metaplasia was observed in 11 children, all were in the H. pylori positive group. There was no difference in the mean of age, gender and socioeconomic class between H. pylori infected and non-infected groups. The frequency of gastric cancer in family members (4 in number) was higher in patients with H. pylori infection. No gastric cancer case was reported from the parents of non-infected children. The worst biopsy parameters (atropy and metaplasia) were improved after H. pylori eradication on control endoscopy. Conclusions: The current study shows a higher prevalence of familial history of gastric cancer in H. pylori infected children. Intestinal metaplasia was also higher in the infected children. Eradication of H. pylori infection for this risk group may prevent subsequent development of gastric cancer.

• 한국콘텐츠학회논문지
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• 제15권4호
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• pp.168-178
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• 2015

경찰은 범정부적 대책의 일환으로 학교폭력 근절을 위한 추진과제를 실행해 왔고, 학교폭력 대처를 위한 법집행기관으로서의 경찰의 역할은 더욱 강화될 것으로 예상한다. 이런 점에서 본 연구에서는 향후 경찰의 학교폭력 예방 활동을 위한 몇 가지 정책적 제언을 하고자 한다. 우선, 학교전담경찰관 활동의 명확한 법적근거를 통한 내실화와 전문성 제고를 위한 채용 교육 제도가 필요하다. 다음으로, 학교폭력 이해당사자들의 책무성을 강화해야 한다. 각 지방경찰청장과 교육감이 주관하는 가칭 'Safe School 인증제도' 그리고 보호자에 대한 학교폭력 책무성을 강화하는 방안도 고려해야한다. 마지막으로, 학교폭력 위험성 정도에 따른 차등적 경찰대응과 종합적인 상담전화 기능의 117학교폭력 전화를 적극 홍보하고 상담사의 전문성을 제고하여 피해신고를 활성화해야 한다.

• 한국환경보건학회지
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• 제37권2호
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• pp.165-169
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• 2011

Between January 2010 and March 2011, there were three outbreaks of foot and mouth disease (FMD) in South Korea. Over 3.45 million animals (5,660 farms) were slaughtered, which was 33.3% of the existing pigs, 8.4% of dairy cows and 3.4% of cattle. FMD disaster costs were estimated at around three billion Korean won. Nine civil servants were killed, over 150 people were wounded and 4,788 landfills were confronted with a pollution problem. Vaccination and slaughter are the two basic alternatives for eradication of FMD. Altho ugh slaughter is more violent, risky and expensive than vaccination, the Korean government had chosen only slaughter eradication by the end of 2010. Even though over three million animals were killed, FMD spread out over most of the country. Finally, the government chose to begin vaccination. Following vaccination, outbreaks decreased dramatically. The purpose of this report is a cultural analysis of the related decision-making process, laws and systems. For the culture analysis, we utilize interviews, symposiums, laws, FMD manual, government reports and press releases. In conclusion, we found that the FMD massacre was influenced by cultural and organizational factors. The cultural factors were economism, cheapening of the value of life, biased perceptions and fears. The organizational factors were a closed process of decision-making, monopoly system, a small homogeneous group and group-think. Therefore, more studies will be needed for those factors of FMD disasters in national-scale cases.

• 대한예방한의학회지
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• 제21권1호
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• pp.9-17
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• 2017

Objectives : Comparative review was rendered to evaluate strengths and weaknesses of two common treatment approaches of treatment based on syndrome differentiation and treatment based on syndrome differentiation from disease. A typical symptom of headache from hypertension was chosen for substantial approach of this review. Methods : Pros and cons of two different approaches to disease were evaluated based on literatures and texts focusing treatment based on syndrome differentiation and treatment based on syndrome differentiation from disease. Headache can be correlated with hypertension yet it can be induced by multiple other factors, and headache may/may not accompany hypertension. Hypertension is an example of treatment based on syndrome differentiation from disease and headache can be an example of treatment based on syndrome differentiation. Results : Treatment based on syndrome differentiation can give more autonomy and flexibility in approach to the disease, Intuition, experience, and traditional medical theory can be applied with ease. However, management and eradication of diseases are difficult and standardization of treatment is not easy among practitioners. Treatment based on syndrome differentiation from disease incorporated merits of both eastern and western medicines, achieving more evidence based diagnosis and treatment. Eradication and standardization of disorders are possible with the latter approach. Conclusions : Comparing two systems of treatment based on syndrome differentiation and treatment based on syndrome differentiation from disease with emphasis on hypertension and headache yielded medical values. Treatment based on syndrome differentiation from disease appears to be superior in medical values and effectiveness, but further evaluation and interest are needed to make advancement in Korean traditional medicine.

• Journal of Ginseng Research
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• 제34권2호
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• pp.77-88
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• 2010

Ginseng has been reported to reduce the risk of cancer in diverse organs, including the lip, oral cavity, pharynx, larynx, esophagus, lung, liver, pancreas, ovary, colon, rectum, and stomach, as demonstrated in clinical and epidemiological studies. studies, base on which findings, Panax ginseng has been classified as a "non-organ-specific cancer preventive." However, the recent keen interest in traditional medicinal herbs has been frequently questioned, about exact mode of action and the use of panaceic compounds has been a prime issue discussed in terms of complementary and alternative medicine. Several in vitro and in vivo studies have shown the mitigating effects of Korean red ginseng on Helicobacter pylori (H. pylori)-associated atrophic changes and carcinogenesis; However, evidence-based medicine, consisting of large-scale or well designed clinical studies, is still warranted whether Korean red ginseng is to be recognized as an essential therapeutic strategy regarding a "H. pylori-associated gastric cancer preventive." Specifically, comprehensive clinical trials of Korean red ginseng are needed to demonstrate that mucosal regeneration in patients with atrophic gastritis is feasible using Korean red ginseng supplements after the eradication of H. pylori infection. Ginseng is a good example of a natural herb and its ubiquitous properties may include the reduction or delay of inflammation carcinogenesis. Korean red ginseng contains ample amounts of active ginsenosides and we have demonstrated their effects in in vitro and in vivo studies with positive outcomes. In this review, the quantitative and qualitative benefits of Korean red ginseng in the treatment of H. pylori infection are described.

• Asian Pacific Journal of Cancer Prevention
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• 제15권24호
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• pp.10565-10571
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• 2015

Gastric cancer incidence rates vary dramatically by world region with East Asia having the highest rate. The Asian population of the United States (US) is growing rapidly and over 17 million Americans are of Asian descent. A majority of Chinese, Korean and Vietnamese Americans are immigrants. Americans of East and Southeast Asian descent experience marked gastric cancer disparities and the incidence rate among Korean men in the US is over five times higher than the incidence rate among non-Hispanic white men. Randomized controlled trials have provided evidence for the effectiveness of helicobacter pylori identification and eradication in preventing gastric cancer. Additionally, Japan and South Korea have both experienced improvements in gastric cancer mortality following the implementation of programs to detect early stage gastric cancers. There are currently no clear US guidelines regarding the primary and secondary prevention of gastric cancer in high-risk immigrant populations. However, it is likely that a proportion of US physicians are already recommending gastric cancer screening for Asian patients and some Asian immigrants to the US may be completing screening for gastric cancer in their native countries. Surveys of US primary care physicians and Asian American communities should be conducted to assess current provider practices and patient uptake with respect to gastric cancer prevention and control. In the absence of clinical guidelines, US health care providers who serve high-risk Asian groups could consider a shared decision-making approach to helicobacter pylori identification and eradication, as well as gastric endoscopy.

• 한국동물위생학회지
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• 제26권2호
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• pp.135-144
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• 2003

Fowl typhoid is a septicemic disease of turkeys and chickens. The antigen is Salmonella(S) gallinarum, which cross-reacts with S pullorum because of common antigen. The organism is maintained in the ovary of carrier birds and transmitted vertically in the york. It is also transmitted horizontally through feces and broken eggs. The symptoms are weakness, drowsiness, wing drooping, hyperexcitability, paresis and diarrhea. In the many cases, the birds are found dead in the morning before any symptoms have been noticed. this experiment was carried out to investigate the characteristics of S gallanarum and scrutinized about the control systems. 1. Fowl typhoid was came about in the winter than the other seasons. The average of mortality was 46.3%. And it was came about not only adult poultry but also chicks. 2. S gallinarum was isolated from liver and spleen in infected chickens. Total isolated strains were 60. 3. The organisms were all extinct at 60$^{\circ}C$, 30mins. 4. A survival rate was higher in underground water than a secondary distilled water. It was detected in underground water until 30 days. 5. When being exposed to the solar light, it became extinct almost within 24 hours. 6. It was survived in a refrigerator until 12 months. 7. It was extinct among 5 mins in 0.1% phenol and 2% formalin. 8. When the cultured organism fluid was inoculated in SD-rat abdominal cavity, rat died within 24 hours. 9. Pullorum-typhoid related program must disciplines in order to destroy the fowl typhoid, and breeding system must be converted to cage system.