• Archives of Plastic Surgery
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• 제38권5호
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• pp.699-702
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• 2011

Purpose: Venous stasis ulcer is the most severe form of chronic venous insufficiency and this commonly appears in the lower limb. Pharmacological therapy, reconstruction of the venous system, surgical management, cellular therapy and compression therapy are known as the treatments of venous stasis ulcer, but relapses are common, which make it a typical chronic wound. We report here on a case of recurrent venous stasis ulcer that healed with compression therapy without any other treatment. Methods: A 35-year-old man with a 13 years history of venous stasis had developed an ulcer on the distal third portion of the lower left limb which was developed 12-year before enrollment in this study. He had been treated with vacuum assist closure, 2 times of cell therapy and 3 times of skin graft for 8 years, but the lesion recurred. From November, 2008 compression therapy was done with the 3M $Coban^{TM}$ 2 Layer Compression System (3M, St. Paul, USA). The ulcer at that time was oval shaped and $3{\times}4$ cm in size. A comfort layer bandage was applied from the proximal phalanx of the great toe to the knee. A compression layer bandage was applied on the previous layer with it being overlapped one half the width of the comfort layer bandage. The dressing was changed every 4 days and the change was recorded with photography. Results: A total of 12 $Coban^{TM}$ 2 Layer Compression Systems were used. The size of the ulcer decreased to $2.5{\times}2.5$ cm in one month, to $2{\times}2$ cm in 2 months, it was $1{\times}1.8$ cm in size at 3 months and it completely healed in 4 months. Conclusion: The venous stasis ulcer was completely healed using the 3M $Coban^{TM}$ 2 Layer Compression System. This method was easy to apply, made the patient comfortable and it provided an excellent compression effect. As in the previous studies, this compression therapy has been proven to play an important role for the treatment and prevention of venous stasis ulcer.

• 한국토양비료학회지
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• 제46권2호
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• pp.105-111
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• 2013

Lysobacter capsici YS215의 특성 및 뿌리혹선충 방제에 미치는 영향을 조사하였다. YS1215의 생육은 배양 6일째 최고였으며, 생육에 따른 chitinase와 gelatinase의 활성은 각각 3일째와 5일째에 가장 높은 활성을 보였다. YS1215 배양액이 선충 피해 방제와 식물 생장에 미치는 영향을 조사해 본 결과, 5주째 식물 지상부 생체중 및 건조중에서 배양액 반량구에서 가장 높게 나타났지만, 9주째에는 미생물 배양액, 미생물 배양액 반량구 및 배지액 처리구에서 차이를 보이지 않았다. 하지만 9주째 미생물 배양액, 미생물 배양액 반량구 및 배지액 처리구가 물처리구 보다 높게 나타났다. 지상부 길이에서는 미생물 배양액 반량구 처리구가 가장 높았다. 선충 피해 방제에 있어서 난낭수, 뿌리혹수 및 토양내 유충수에서 각각 농약 처리구에서 가장 낮게 나타났으나, 미생물 배양액 처리구와의 유의적 차이는 보이지 않았다. 미생물 배양액 처리구는 미생물 배양액 반량구 및 물 처리구와는 유의적 차이가 있는 것으로 조사되었다. 그러므로 다양한 분해효소를 생성하는 L. capsici YS1215의 뿌리혹선충방제에 대한 충분한 가능성과 가치가 있다고 사료된다.

• Radiation Oncology Journal
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• 제36권3호
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• pp.192-199
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• 2018

Purpose: Use of radiotherapy combined with chemotherapy is increasing in hypopharyngeal cancer. However, many show residual tumor after radiotherapy. Timing for treatment evaluation and salvage therapy is essential. However, optimal timing for salvage surgery has not been suggested. In this study, we tried to evaluate optimal timing for salvage surgery. Methods and Materials: Patients who were diagnosed with hypopharyngeal squamous cell carcinoma between 2006 and 2015 were retrospectively analyzed. All patients received definitive radiotherapy with or without chemotherapy. Response of all treated patients were analyzed at 1, 3, and 6 months after radiotherapy. Any patients with progression before 6 months were excluded. Results: A total of 54 patients were analyzed. Complete remission (CR) rates at 1 month (CR₁), 3 months (CR₃) and 6 months (CR₆) were 66.7%, 81.5%, and 90.7%, respectively. Non-CR at 1 month (NCR₁), 3 months (NCR₃), and 6 months (NCR₆) showed poor locoregional recurrence-free survival rates (1-year rates of 63.7%, 66.7%, and 0.0%, respectively) compared to CR₁, CR₃, and CR₆ (1-year rates 94.3%, 88.0%, and 91.5%, respectively). Particularly significant differences were seen between CR₆ and NCR₆ (p < 0.001). Of 10 patients with NCR₃, 5 showed CR at 6 months (NCR₃/CR₆). There was no statistical difference in locoregional recurrence-free survival between CR₃ and NCR₃/CR₆ group (p = 0.990). Conclusion: Our data suggest half of patients who did not show CR at 3 months eventually achieved CR at 6 months. Waiting until 6 months after radiotherapy may be appropriate for avoiding additional salvage therapy.

• Journal of Korean Neurosurgical Society
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• 제60권5호
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• pp.498-503
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• 2017

Objective : The purpose of the present study was to compare inter-fragmentary compression pressures after fixation of a simulated type II odontoid fracture with the headless compression Herbert screw and a half threaded cannulated lag screw. Methods : We compared inter-fragmentary compression pressures between 40- and 45-mm long 4.5-mm Herbert screws (n=8 and n=9, respectively) and 40- and 45-mm long 4.0-mm cannulated lag screws (n=7 and n=10, respectively) after insertion into rigid polyurethane foam test blocks (Sawbones, Vashon, WA, USA). A washer load cell was placed between the two segments of test blocks to measure the compression force. Because the total length of each foam block was 42 mm, the 40-mm screws were embedded in the cancellous foam, while the 45-mm screws penetrated the denser cortical foam at the bottom. This enabled us to compare inter-fragmentary compression pressures as they are affected by the penetration of the apical dens tip by the screws. Results : The mean compression pressures of the 40- and 45-mm long cannulated lag screws were $50.48{\pm}1.20N$ and $53.88{\pm}1.02N$, respectively, which was not statistically significant (p=0.0551). The mean compression pressures of the 40-mm long Herbert screw was $52.82{\pm}2.17N$, and was not statistically significant compared with the 40-mm long cannulated lag screw (p=0.3679). However, 45-mm Herbert screw had significantly higher mean compression pressure ($60.68{\pm}2.03N$) than both the 45-mm cannulated lag screw and the 40-mm Herbert screw (p=0.0049 and p=0.0246, respectively). Conclusion : Our results showed that inter-fragmentary compression pressures of the Herbert screw were significantly increased when the screw tip penetrated the opposite dens cortical foam. This can support the generally recommended surgical technique that, in order to facilitate maximal reduction of the fracture gap using anterior odontoid screws, it is essential to penetrate the apical dens tip with the screw.

• 한국육종학회지
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• 제41권3호
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• pp.252-260
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• 2009

1. 본 연구에서는 공동배양 배지에 Agrobacterium 성장 억제물질인 silver nitrate를 첨가하고 변온과 여과지처리를 추가하여 공동배양 기간을 7일로 늘였으며, 또한 항산화 물질 3종을 공동배양 배지에 첨가하여 세포의 oxidative burst를 최소화함으로써 벼 형질전환효율을 높일 수 있었다. 또한 이 방법을 적용하여 형질전환이 어려운 품종을 대상으로도 형질전환 식물체를 작성할 수 있었다. 2. 벼 형질전환체의 70%에서 도입유전자 수가 1copy인 것으로 나타나, 적은 수의 유전자가 안정적으로 도입됨을 확인 하였다. 3. 이러한 결과를 바탕으로, 새로운 공동배양 방법을 사용하여 우수한 농업적 형질을 가진 벼 육종 소재 및 품종을 신속하게 개발할 수 있을 것으로 기대된다.

• 한국콘텐츠학회논문지
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• 제19권2호
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• pp.259-268
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• 2019

뎅기 바이러스는 대표적인 모기-매개 바이러스로, 전 세계 인구의 약 절반에 가까운 인구가 감염 위험에 노출되어 있다. 뎅기 바이러스는 뎅기열과 같은 비교적 경미한 증상을 나타내지만, 적절한 치료를 받지 않을 경우 치사율이 20%가 넘는 뎅기 출혈열 및 뎅기 쇼크 증후군과 같은 심각한 증상을 유발하기도 한다. 뎅기 바이러스 검출을 통해 감염 여부를 조기에 진단한다면 치사율을 1% 미만으로 낮출 수 있는 것으로 보고되고 있기 때문에, 뎅기 바이러스 검출기술의 개발이 매우 중요한 상황이다. 본 연구에서는 특허 5대 강대국인 한국 미국 유럽 일본 중국을 대상으로 뎅기 바이러스 검출기술 및 뎅기열 진단기술과 관련된 특허문헌 검색을 수행하였다. 검색된 특허문헌으로부터 관련도가 높은 유효 특허문헌 69건을 대상으로 국가별 연도별 특허권자별 정량분석을 수행하였으며, 모든 특허문헌을 검토하여 유전자 검출 기반의 분자진단, 단백질 검출 기반의 면역진단, 세포배양법을 통한 진단 등의 3가지 분류로 나누어 정성분석을 수행하였다. 이를 종합하여 뎅기 바이러스 검출기술 및 뎅기열 진단기술 관련 특허동향을 파악하였으며, 현재 수준에서의 분자진단과 면역진단의 특징 및 한계점을 분석하였다. 더 나아가 한계점을 극복하기 위한 기술개발 방향과 앞으로의 전망에 대해 논의하였다.

• Journal of Dairy Science and Biotechnology
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• 제41권2호
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• pp.76-85
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• 2023

본 연구는 유산균과 병원성균의 성장에 미치는 영향과 요구르트 제조에 적용 가능성을 검토하였다. 유산균인 W. cibaria KCCM 41287, W. paramesenteroides KCCM 40114, L. plantarum KCCM 11322, Lactobacillus lactis KCCM 43471, L. acidophilus KCCM 32820, L. cremoris KCCM 40699, L. bulgaricus KCCM 34717, S. thermophilus KCCM 40430은 석류 농축액에 의해서 성장이 촉진되었다. 석류 농축액의 농도가 증가함에 따라 현저한 성장 효과를 나타내었다. 반면 병원성균인 E. coli KCCM 11587, E. coli KCCM 11591, E. coli KCCM 11596, 그리고 E. coli KCCM 11600는 석류 농축액에 의해서 성장이 억제되었다. 석류 농축액의 농도가 증가함에 따라 성장은 현저하게 감소되었다. 병원성균에 대한 석류 농축물의 억제는 유산균에 대한 석류 농축물의 촉진 효과와는 반대의 결과를 보여주었다. 따라서 석류 농축액은 유산균에 있어서 프리바이오틱스로서 이용 가능성을 확인하였다. 한편, 석류 농축액을 첨가한 요구르트는 무첨가구에 비해 최적의 조건을 보였다. 특히 석류 농축액을 첨가한 요구르트에서 유산균의 생균 수가 유의하게 높았다. 또한 저장 중 요구르트에서는 무첨가구보다 석류 농축액을 첨가하여 제조한 요구르트에서 유산균의 생존율이 더 높았다. 따라서 석류 농축액은 프리바이오틱스로서의 가능성과 유제품의 적용 가능성이 확인되었다.

• The Korean Journal of Physiology and Pharmacology
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• 제27권6호
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• pp.521-531
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• 2023

Transmembrane protein TMEM16A, which encodes calcium-activated chloride channel has been implicated in tumorigenesis. Overexpression of TMEM16A is associated with poor prognosis and low overall survival in multiple cancers including lung adenocarcinoma, making it a promising biomarker and therapeutic target. In this study, three structure-related sesquiterpene lactones (mecheliolide, costunolide and dehydrocostus lactone) were extracted from the traditional Chinese medicine Aucklandiae Radix and identified as novel TMEM16A inhibitors with comparable inhibitory effects. Their effects on the proliferation and migration of lung adenocarcinoma cells were examined. Whole-cell patch clamp experiments showed that these sesquiterpene lactones potently inhibited recombinant TMEM16A currents in a concentration-dependent manner. The half-maximal concentration (IC50) values for three tested sesquiterpene lactones were 29.9 ± 1.1 µM, 19.7 ± 0.4 µM, and 24.5 ± 2.1 µM, while the maximal effect (E_max) values were 100.0% ± 2.8%, 85.8% ± 0.9%, and 88.3% ± 4.6%, respectively. These sesquiterpene lactones also significantly inhibited the endogenous TMEM16A currents and proliferation, and migration of LA795 lung cancer cells. These results demonstrate that mecheliolide, costunolide and dehydrocostus lactone are novel TMEM16A inhibitors and potential candidates for lung adenocarcinoma therapy.

• Journal of Preventive Medicine and Public Health
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• 제7권1호
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• pp.1-28
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• 1974

The writers have conducted the investigation to assess the nutritional status of young rural Korean children aged from 0 to 4 years old in August 1971. The survey areas were Kaejong-myon. Daeya-myon, Okku-gun, Jeonra-bukdo, Korea. These survey areas were typical agricultural plain areas. The total numbers of children examined were 2,706 comprising 1,394 male and 1,312 female. The weight, height, and chest circumference of children were measured and means and standard deviations. were calculated for each measurement. In addition, the nutritional status of each child was classified by the four levels of malnutrition and the Gomez classification, The examination of red blood cell count, haematocrit value, and intestinal parasite infection were carried out at the same time. In general, recent work tend to suggest that environmental influences, especially nutrition, are of great importance than genetic background or other biological factors for physical growth and development. Certainly the physical dimensions of the body are much influenced by nutrition, particularly in the rapidly growing period of early childhood. Selected body measurements can therefore give valuable information concerning protein-calory malnutrition. Growth can also be affected by bacterial, viral, and parasitic infection. For the field workers in a developing country, therefore, nutritional anthropometry appears to be of greatest value in the assessment of growth failure and undernutrition, principally from lack of protein and calories. In order to compare and evaluate the data obtained, the optimal data of growth from the off-spring of the true well-fed, medically and socially protected are needed. So-called 'Standards' that have been compiled for preschool children in Korea, however, are based on measurement of children from middle or lower socio-economic groups, who are, in fact, usually undernourished from six months of age onwards and continuously exposed to a succession of infective and parasitic diseases. So that, the Harvard Standards which is one of the international reference standards was used as the reference standards in this study. Findings of the survey were as follows: A. Anthropometric data: 1) Comparing the mean values for body weight obtained with the Korean standard weight of the same age, the rural Korean children were slightly haevier than the Korean standard values in both sexes. Comparing with the Japanese children values, the rural Korean children were slightly haevier in male and in the infant period of female but lighter in female of the period of 1 to 4 years old than Japanese children. 2) Comparing the mean values for height obtained with the Korean standard height of the same age, the rural Korean children were taller than the Korean standard values except the second half of infatn period in both sexes. Comparing with the Japanese children, the rural Korean children were slightly smaller than Japanese children except the first half of infant peroid in both sexes. 3) Mear values of chest circumference of rural Korean children obtained were less than the Korean standard values of the same ages in both sexes. B. Prevalence of Protein-Calory Malnutrition: Children examined were devided into two groups, i. e., infant(up to the first birthday) and toddler (1 to 4 fears old). 1) Percentages of four levels of malnutrition: a) When the nutrtional status of each child was classified (1) by body weight value, the percentages for male and female of children attained standard growth were 52.8%(infant 83.3%, toddler 44.4%) and 39.7% (infant 74.5%. toddler 30.5%), the first level of malnutrition were 31.9%(infant 13.7%, toddler 36.9%) and 31.7%(infant 15.3%, toddler 36,0%), the second level of malnutrition were 12.3%(infant 1.7%, toddler 15.3%) and 23.3% (infant 7.7%, fodder 27.5%), the third level of malnutrition were 2.7%(infant 0.7%, toddler 3.2%) and 4.6%(infant 1.8%, toddler 5.3%) the fourth level of malnutrition were 0.3% (infant 0.7%, toddler 0.2%) and 0.7% (0.7% for infant and toddler) respectively. (2) by height value, the percentages for male and female of children attained standard growth were 80.3% (infant 97.3%, toddler 75.6%) and 75.1% (infant 96.4%, toddler 69.5), the first level of malnutrition were 17.9% (infant 2.0%, toddler 22.3%) and 23.6% (infants 3.6%, toddler 28.8%), the second level of malnutrition were 1.2% (infant 0.3%, toddler 1.5%) and 1.1% (infant 0%, toddler 1.4%), the third level of malnutrition were 0.4%(infant 0.3%, toddler 0.5%) and 0.2%(infant 0%, toddler 0.3%), the fourth level of malnutrition were 0.1%(infant 0%, toddler 0.1%) and 0% respectively. (3) by body weight in relation to height, the percentages for male and female of children attained standard growth were 87.9% (infant 77.6%, toddler 87.9%) and 78.2% (infant 77.4%, toddler 78.2%), the first level of malnutrition were 12.2% (infant 18.4%, toddler 10.6%) and 18.2% (infant 17.9%, toddler 18.3%), the second level of malnutrition were 1.9%(infant 3.3%, toddler 1.5%) and 3.0%(infant 3.3%, toddler 2.9%), the third level of malnutrition were 0.1%(infant 0%. toddler 0.1%) and 0.5% (infant 0%, toddler 0.6%), the fourth level of malnutrition were 0.1%(infant 0.7%, toddler 0%) and 0.3% (infant 1.5%, toddler 0%) respectively. b) When the nutritional status of each child according to the mother's age at perturition, i. e., young aged mother (up to 30 years old), middle aged mother (31 to 40 years old) and old aged mother (41 years or above) was classified (1) by body weight, among infants and toddlers, at each year of age, with increasing the mother's age, there was an increase in percentage of subjects underweight. This tendency of increasing percentage of underweight was more significant in the infant period than the toddler period. (2) by height value, no significant differences between each mother's age group were found. c) When the nutritional status of each child according to the birth rank, i. e., lower birth rank (first to third) and higher birth rank (fourth or above) was classified (1) by weight value, children of higher birth rank were slightly more often underweight than those of lower birth rank, but not significant. (2) by height value, no differences were found between children of lower and higher birth rank. 2) Gomez Classification: When the nutritional status of each child was classified a) by body weight value, the percentages for male and female of children. attained standard growth were 53.1% (infant 82.6%, toddler 44.9%) and 39.2% (infant 73.4%, toddler 30.1%), the first degree of malnutrition were 39.4% (infant 14.7%, toddler 46.2%) and 47.1% (infant 21.9%, toddler 53.8%), the second degree of malnutrition were 7.3%(infant 2.3%, toddler 8.6%) and 12.9% (infant 4.0%, toddler 15.2%). and the third degree of malnutrition were 0.2%. (infant 0.3%, toddler 0.2%) and 0.8% (infant 0.7%, toddler 0.9%) respectively. b) by height value, the percentages for male and female of children attained standard growth were 80.8% (infant 97.0%, toddler 76.3%) and 73.8%(infant 95.6%, toddler 68.0%), the first degree of malnutrition were 18.5% (infant 2.7%, toddler 22.9%) and 24.6% (infant 4.4%, toddler 30.0%), the second degree of malnutrition were 0.6%(infant 0.3%, toddler 0.7%) and 0.5% (infant 0.1%, toddler 0.7%), and the third degree of malnutrition were 0.1%(infant 0%, toddler 0.1%) and 1.1% (infant 0%, toddler 1.3%) respectively. C. Results of clinical laboratory examination: 1) Red blood cells: The ranges of mean red blood cell counts for male and female were $3,538,000/mm^3\;to\;4,403,000/mm^3\;and\;3,576,000/mm^3\;to\;4,483,000/mm^3$ respectively. The lowest red cell counts were seen at the age of 0-3 months for male and 1-2 months for female. 2) Haematocrit value : The ranges of haematocrit value of male and female were 35.1% to 38.8% and 34.7% to 38.8% respectively. The lowest haematocrit values were seen at the age of 2-3 months for male and 1-2, months for female. 3) The prevalence rates of intestinal parasites for male and female children with Ascaris lumbricoides were 34.1% (infant 18.8%, toddler 38.1%) and 36.0%(infant 18.4%, toddler 40.7%), with Trichocephalus trichiuris were 6.8% (infant 2.9%, toddler 7.9%) and 9.0% (infant 3.0%, toddler 10.6%), with Hookworm were 0.3% (infant 0.5%, toddler 0.2%) and 0.3% (infant 0.5%, toddler 0.3%), with Clonorchis sinensis were 0.4%(infant 0%, toddler 0.5%) and 0.1%(infant 0%, toddler 0.1%) respectively.

• 한국산림과학회지
• /
• 제77권4호
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• pp.382-388
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• 1988

우리나라에서의 임목육종(林木育種)에 의(依)한 생산성(生産性) 증가(增加)를 중요(重要)한 몇 수종(樹種)에 관하여 살펴보았다. 소나무 수형목(秀型木) 17가계(家係)의 차대(次代)는 15년생(年生)에서 비수형목(非秀型木) 차대(次代)와 비교(比較)하여 57%의 재적(材積) 증가(增加)를 보였다. 17가계(家係)중 우수(優秀)한 세 가계(家係)를 재선발(再選拔)한다면 배이상(倍以上)의 재적 증가가 기대되었다. 15년생(年生) 리기테다소나무는 전북(全北) 완주(完州)에서 리기다소나무보다 배이상(倍以上)의 재적 생장을 하였다. 그러나 이 잡종(雜種)의 우수성(優秀性)은 북(北)쪽으로 올라 갈수록 감소(減少)하였는데 주로 내한성(耐寒性)이 약(弱)한 탓으로 생각된다. 경기(京畿) 용인(龍仁)의 평지(平地)에서는 리기테다소나무가 리기다소나무보다 생장(生長)이 훨씬 좋았으나 산정(山頂)에서는 리기다소나무보다 생장(生長)이 떨어졌다. 현사시는 10년생때 식재장소(殖栽場所)에 따라 양친수종(兩親樹種)보다 2~2.5배(倍)의 생장(生長)을 보였다. 도입(導入)된 리기다소나무도 재적(材積) 생장(生長) 증가(增加)를 보였다. 45개(個) 산지(産地)에서 도입(導入)한 12년생(年生) 리기다소나무중에서 우수한 다섯 산지(産地)를 선발(選拔)하면 국내(國內)에서 선발(選拔)한 수형목(秀型木) 차대(次代)보다 53%의 재적(材積) 증가(增加)가 기대되었다. 선발(選拔)된 다섯 산지(産地) 각각에서 최상(最上)의 가계(家係)를 (산지(産地)당 5가계(家係)로 조성되었음) 재선발(再選拔)한다면 다시 14%의 재적(材積) 증가(增加)가 기대된다. 연간 밤 생산(生産)은 칠만톤에 달하는데, 이것은 밤나무 순혹벌에 내충성(耐虫性) 품종(品種)을 심은 덕으로 생각된다. 비내충성(非耐虫性)인 재래종(在來種) 품종(品種)은 이 곤충(昆虫)에 의해 거의 전멸(全滅)하였기 때문이다. 콜키신처리(處理)에 의(依)한 배수체(倍數體) 및 돌연변이체(突然變異體)가 생산(生産)된 수종(樹種)은 10여 수종(樹種)에 이르나 경제적으로 중요한 수종은 없다. 장차 획기적인 생산성(生産性) 증가(增加)가 생물공학(生物工學)에 의하여 기대되는데 생물공학(生物工學)은 세포(細胞), 세포(細胞) 소기관(小器管), 유전자(遺傳子) 단위에서 선발(選拔), 교잡(交雜), 외래(外來) 유전자(遺傳子) 도입(導入)이 가능하고, 유전자조작(遺傳子操作)까지 가능하기 때문이다. 그러나 현재로는 유전적 우수성이 입증된 조림 수종을 조직배양(組織培養)으로 대량번식(大量繁殖)시킴으로써 생산성(生産性) 증가(增加)에 기여할 것이다.