• 대한한의학방제학회지
• /
• 제16권1호
• /
• pp.117-130
• /
• 2008

Korean traditional medicine has been used for the treatment of the various diseases based on both oriental medicinal theory and clinical trials. Thus, the prescriptions of Korean traditional medicine would be useful for the development of new therapeutics. This research focuses on the fundamental study in Korean traditional prescriptions for the development of new hepatoprotective agents. We found two prescriptions. Injinho-Tang and Osumogwa-Tang, showed the significant DPPH free radical scavenging and hepatoprotective effect, respectively. It is well-known that free radical scavenging effect is related to the prevention of various pathological events including liver injury. This paper deals with hepatoprotective effects on tacrine-induced cytotoxicity in Hep G2 cells, free radicals scavenging on both DPPH and superoxide of above two prescriptions. Hot water extract of Injinho-Tang did not show the significant hepatoprotective effect on tacrine-induced cytotoxicity in Hep G2 cells, however, it shows the significant scavenging effects for both DPPH and superoxide radicals. On the other hand, all of the hot water extracts of constituent herbal drugs in Injinho-Tang exhibited the promising protective effect on tacrine-induced cytotoxicity in Hep G2 cells. Of these, water extract of Rhei Rhizoma showed the most prominent effect on tacrine-induced cytotoxicity in Hep G2 cells. Bioassay-guided fractionation of Rhei Rhizoma extract has furnished four compounds, and their chemical structures have been identified by comparison of their spectral data with those of literature as chrysophanol (1), emodin (2), 3,5-dihydroxy-4'- methoxystilbene (3), and rhapontigenin (4), respectively. Among the isolated compounds, compounds 2-4 revealed the significant hepatoprotective effect in vitro when their $EC_{50}$ values compare with that of silybin, as a positive control. It also exhibited that emodin possessed the most hepatoprotective effect among these active compounds. In case of Osumogwa-Tang, its hot water extract showed the moderate protective effect on tacrine-induced cytotoxicity in Hep G2 cells. Hot water extract of Chaenomelis Fructus, one of the constituent herbal drug of this prescription, exhibited the significant hepatoprotective effect with $EC_{50}$ value of $7.8{\pm}0.1\;{\mu}g/ml$, however, it showed strong cytotoxicity in Hep G2 cells above the concentration of $25\;{\mu}g/ml$. It was revealed that both hot water extract of Evodiae Fructus and its butanol soluble fraction showed the moderate hepatoprotective effect but concentration-dependent activity in Hep G2 assay system. Two quinolone alkaloids, evocarpine and dihydroevocarpine, also tested for their hepatoprotective effects on tacrine-induced cytotoxicity in Hep G2 cells, however, these two compounds derived from the Evodiae Fructus as the major constituents did not show in vitro hepatoprotective effect. From these results, it would be necessary to further isolation of its hepatoprotective compounds from the butanol soluble fraction of the hot water extract of Evodiae Fructus.

• Archives of Plastic Surgery
• /
• 제37권3호
• /
• pp.220-226
• /
• 2010

Purpose: Many topical agents had been used for burn or wound treatment. An awareness of topical agents on various aspects of wound healing permits the clinician to choose the most appropriate material to advantageously control the wound process and final results. Although polydeoxyribonucleotide (PDRN) was used as a tissue repair stimulating agent in a number of human diseases, such as ulcers and burns, its wound healing effects were largely unreported. We aimed to compare the woundhealing effects of PDRN and common dressing materials on full-thickness skin defect in the mouse. Methods: Full-thickness skin defects were made on the back of mice (N=60). The mice were divided into the following 4 groups according to the dressing used for the wounds: group O (Polydeoxyribonucleotide cream), group I (Polydeoxyribonucleotide solution), group M (Medifoam$^{(R)}$), and group G (dry gauze, control group). We analyzed the gross findings, wound sizes and histological findings for the groups. Results: The rate of wound size was decreased in order of group I, group O, group M and group G. The histological findings revealed that the I group showed more reepithelialization and granulation tissue formation and less inflammatory cell infiltration than the other materials. The grade score of wound healing was increased in order of group I, group O, group M and group G. Conclusion: PDRN applicated wound dressings can be used for treating a full-thickness skin defect wounds. Considering its superior efficacy in comparison to the efficacies of other wound dressings, PDRN soaked gauze dressing should be preferentially used for the treatment of fullthickness skin wounds.

• 대한한의학회지
• /
• 제29권1호
• /
• pp.117-133
• /
• 2008

Objectives : Since ancient times, Koreans have applied medicinal spabaths for treatment of various diseases. The objective of this study was to investigate the effect of strontium, one of the common ingredients of such baths, experimentally on acute skin barrier damage. Materials and Methods : Male hairless mice, average weight 20g, were divided into six groups. Each group consisted of five mice. The first was the normal, non-treated group. The second was the control group with acute skin barrier damage intentionally induced by TS. The third was the Ba-Sr1 group bathed in 1mg/L strontium chloride before and after inducing acute skin barrier damage by TS. The fourth was the Ba-Sr7 group bathed in 7mg/L strontium chloride before and after inducing acute skin barrier damage by TS. The fifth was the Sr1 group bathed in 1mg/L of strontium chloride only after intentionally inducing acute skin barrier damage by TS. The sixth was the Sr7 group bathed in 7mg/L of strontium chloride only after intentionally inducing acute skin barrier damage by TS. External changes of skin, skin erythema level, transepidermal water loss level, and GOT and GPT level of each group were checked immediately before and after TS, 3 hrs, 5 hrs and 24 hrs after inducing acute skin barrier damage. Then, tissue samples were made and examined for damage to epithelial cells, stratum corneum, change of mucous polysaccharide in dermis and amount of mast cells. Statistical analysis was performed by one way-ANOVA, Scheffe and Duncan for a post hoc test and pairwise comparison for comparing for difference between each time. Statistical significance was achieved if the probability was less than 5% (p<0.05) Results : 1. From skin erythema and TEWL level indicating the function of the skin barrier, we can know that it is helpful to the skin barrier to bathe in a water solution including a low concentration of strontium. 2. In the control group with acute skin barrier damage induced by TS, skin barrier damage persisted until 3-5 hrs and recovered after 5-24 hrs. Differently from the control group, in the case of taking a bath in a water solution including strontium, skin barrier damage recovered after only 3-5 hrs. Therefore, the bath with a water solution including strontium can promote recovery of the skin barrier. 3. Bathing in water solution including a higher concentration of strontium was more beneficial to recovery of skin barrier damage. 4. There was no influence on serum GOT and GPT from bathing in a water solution including strontium. Conclusions : The strontium was effective for recovery and mitigation of acute skin barrier damage induced by tape stripping. I suggest that strontium (Sr) can be used as an external treatment medicine, addedinto bath water to treat acute skin barrier damage.

• Pediatric Infection and Vaccine
• /
• 제20권2호
• /
• pp.89-97
• /
• 2013

목 적 : 국내 B형 인플루엔자의 임상 양상 및 A형 인플루엔자와 비교를 위해 후향적 연구를 시행하였다. 방 법 : 2011-2012 인플루엔자절기에 multiplex PCR로 인플루엔자가 진단된 소아청소년 입원 환자들의 의무 기록 분석으로 B형 인플루엔자의 임상 양상과 함께 같은 기간 A형 인플루엔자와의 차이점을 조사하였다. 결 과 : 연구 기간 동안 진단 된 145명 인플루엔자 환자 중, A형 인플루엔자 66명, B형 인플루엔자 78명이 있었고, 1명은 A, B형 인플루엔자가 동시에 진단되었다. 이들은 기침(88.2%), 콧물(77.1%), 가래(60.4%) 등 호흡기 증상을 호소하며, 하기도 감염(49.3%) 및 상기도 감염(31.9%)으로 진단된 경우가 많았다. B형과 A형 인플루엔자 환자의 주요 증상 및 검사실 소견은 차이가 없었고, A형에 비해 B형 인플루엔자 환자의 입원 전 발열기간이 길었다(3.0일 vs. 2.5일, P=0.043). 결 론 : 임상 양상만으로 B형과 A형 인플루엔자 감별은 제한성이 있고, B형 인플루엔자 환자의 입원 전 발열 기간 3일을 고려한다면 진단 후 치료보다 감염 전 예방이 중요하다.

• 식품산업과 영양
• /
• 제9권1호
• /
• pp.36-45
• /
• 2004

Bamboo salt has been used for the purpose of prevention and treatment of various diseases in Korea. Present study was carried out to ascertain the effects of purple bamboo salt upon anti-allergic effect, anti-inflammatory activity and immune-enhance effect as well. Purple bamboo salt significantly inhibited the ear swelling response and histamine release induced by compound 48/80 in mice and rat peritoneal mast cells. Purple bamboo salt (0.01 ∼ lg/kg) also dose-dependently inhibited the passive cutaneous anaphylaxis by oral administration. Purple bamboo salt (1 mg/mL) in hibited phorbol 12-myristate 13-acetate plus calcium ionophore A23187-stimulated tumor necrosis factor (TNF)-${\alpha}$, interleukin (IL)-1${\beta}$ and IL-6 secretion, by 67.04${\pm}$0.08%, 68.01${\pm}$1.85%, 69.48${\pm}$0.54%, respectively. In addition, purple bamboo salt inhibited the expression of TNF-${\alpha}$ mRNA in HMC-1 cells. Finally, we investigated the effect of purple bamboo salt in the forced swimming test (FST) and the change of purple bamboo salt-mediated cytokine production from MOLT-4 cells. At the 7th, immobility time was significantly decreased in the purple bamboo salt-administration group (35.4 ${\pm}$5.9 s for 1 g/kg) in comparison with the control group (93.2 ${\pm}$ 15.45). After FST, the content of glucose in the blood serum was increased and the levels of blood urea nitrogen, lactic dehydrogenase was decreased in purple bamboo salt-administration group. However, it had no effect on the elevation of CK and TP level. Purple bamboo salt (1 mg/mL) significantly increased the interferon (IFN)-${\gamma}$ and IL-2 level compared with media control (about 3.7-fold for IFN-${\gamma}$, about 3.5-fold for IL-2, p〈0.05) but did not affect the IL-4.

• Pediatric Infection and Vaccine
• /
• 제13권2호
• /
• pp.99-105
• /
• 2006

목 적 : 현재 폐구균 혈청형 분석을 위해 사용중인 Quellung 반응과 비교하여, multiplex assay 방법에 의한 폐구균 혈청형 분석의 유용성을 확인하고, Quellung 반응에 의한 혈청형 분석의 정확성을 검증하였다. 방 법 : 연세 의료원 신촌 세브란스 병원에서 폐구균 감염이 확인된 환자로부터 분리된 35주의 검체를 이용하였다. Quellung 반응을 통한 혈청형 분석과 multiplex latex bead를 이용한 유세포 분석기기법을 통한 혈청형 분석을 시행한 후 양 방법간의 혈청형 분석을 비교하였다. 결 과 : Multiplex assay 방법에 제시된 대로 각각의 혈청형에서 평균 형광치 값의 감소를 확인할 수 있었다. 비교를 위해 시행한 14개 혈청형 중 11개 혈청형에서 비교가 가능했으며, 분석 비교가 가능했던 27검체 중 17검체에서 혈청형이 일치하는 결과를 보였다. 결 론 : 기존의 Quellung 반응의 경우 혈청형 분석에 많은 시간과 노력이 소요되며 일정량의 오차가 발생하는 문제가 있어, 이를 보완하기 위한 새로운 방법들이 시도되고 있다. 향후 보다 많은 혈청형을 대상으로 multiplex latex bead를 이용한 혈청형 분석을 시행할 필요가 있으며 이를 통해 multiplex assay와 Quellung 반응을 비교하며, Quellung 반응의 정확도를 올리기 위한 노력이 함께 수반되어야 할 것이다. 현재까지의 예비 결과로 볼 때 새로운 방법의 적용 가능성은 매우 높다고 할 수 있다.

• 한국임상수의학회지
• /
• 제22권3호
• /
• pp.190-193
• /
• 2005

본 연구에서는 십자인대 손상견의 무릎관절액의 TRAP의 농도와 비교 할 수 있는 정상 관절액의 TRAP 농도의 지표를 제시 하기 위하여, 정상 무릎 관절액의 TRAP의 농도를 측정하였다. 십자인대 손상이 없는 23두 건강한 잡종견(14두 노령견과 9두 성견)을 실험견으로 선택하고 성별, 나이, 몸무게로 구별하였다. 무릎 관절액을 채취 한뒤, Lang method로 관절액의 TRAP을 측정하였다. 측정된 TRAP의 농도를 성별, 나이, 몸무게 등으로 구별하여 $Mean{\pm}SD$로 표시 하였으며, 유의성 차이를 T-test로 구별하였다. 노령견(14두, 2년이상) TRAP의 농도는 $0.083{\pm}0.039\;IU/ml(mean{\pm}SD$, 성견(9두, 2년 이하) $0.064{\pm}0.023\;IU/ml$, 대형견(15두, >22 kg) $0.075{\pm}0.028\;IU/ml$, 소형견(8두, <22 kg) $0.076{\pm}0.046\;IU/ml$, 중성화견(15두) $0.085{\pm}0.036\;IU/ml$, 중성화 되지 않은견(8두) $0.056{\pm}0.022\;IU/ml\;(Mean{\pm}SD)$로 나타났으며, 중성화 견과 중성화 되지 않은 견에서만 유의성 있는 차이 (P<0.05)가 보였다. 본 연구의 정상견에서 TRAP 농도는 십자인대의 손상견과 비교할수 있는 지표로 활용할 수 있을 것으로 사료된다.

• Safety and Health at Work
• /
• 제7권2호
• /
• pp.156-160
• /
• 2016

Background: Workers in pesticide manufacturing industries are constantly exposed to pesticides. Genetic biomonitoring provides an early identification of potential cancer and genetic diseases in exposed populations. The objectives of this biomonitoring study were to assess DNA damage through comet assay in blood samples collected from industry workers and compare these results with those of classical analytical techniques used for complete blood count analysis. Methods: Samples from controls (n = 20) and exposed workers (n = 38) from an industrial area in Multan, Pakistan, were subjected to various tests. Malathion residues in blood samples were measured by gas chromatography. Results: The exposed workers who were employed in the pesticide manufacturing industry for a longer period (i.e., 13-25 years) had significantly higher DNA tail length ($7.04{\mu}m$) than the controls ($0.94{\mu}m$). Workers in the exposed group also had higher white blood cell and red blood cell counts, and lower levels of mean corpuscular hemoglobin (MCH), MCH concentration, and mean corpuscular volume in comparison with normal levels for these parameters. Malathion was not detected in the control group. However, in the exposed group, 72% of whole blood samples had malathion with a mean value of 0.14 mg/L (range 0.01-0.31 mg/L). Conclusion: We found a strong correlation ($R^2=0.91$) between DNA damage in terms of tail length and malathion concentration in blood. Intensive efforts and trainings are thus required to build awareness about safety practices and to change industrial workers' attitude to prevent harmful environmental and anthropogenic effects.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
• /
• 제24권1호
• /
• pp.51-58
• /
• 2018

Purpose: In this study, through the comparison of the pressure fluctuation and air exchange volume in negative isolation room according to the type of the door and door opening/closing speeds, which is one of the main factors causing the cross contamination of the negative pressure isolation room, establishes standard operating procedures to prevent cross contamination in high risk infectious diseases and isolation room design. Methods: In this study, the air flow each of the room is analyzed using ANASYS CFX CODE for flow analysis. In addition, the grid configuration of the door is constructed by applying Immersed Solid Methods. Results: The pressure fluctuation due to the opening and closing of the hinged door was very large when the moment of the hinged door opened and closed. Especially, at the moment when the door is closed, a pressure reversal phenomenon occurs in which the pressure in the isolation room is larger than the pressure in the anteroom. On the other hand, the pressure fluctuation due to the opening and closing of the sliding door appeared only when the door was closed, but the pressure reversal phenomenon not occurred at the moment when the sliding door was closed, unlike the hinged door. As the opening and closing speed of the hinged door increases, the air exchange volume is increased. However, as the opening and closing speed of the sliding door is decreased, the air exchange volume is increased. Implications: According to the results of this study, it can be concluded that the pressure fluctuation due to the opening and closing of the hinged door is greater than the pressure fluctuation due to the opening and closing of the sliding door. In addition, it can be confirmed that the pressure reversal phenomenon, which may cause to reduce the containment effect in negative pressure isolation room, is caused by the closing of the hinged door. Therefore, it is recommended to install a sliding door to maintain a stable differential pressure in the negative isolation room. Also, as the opening and closing speed of the hinged door is slower and the opening and closing speed of the sliding door is faster, the possibility of cross contamination of the room can be reduced. It is therefore necessary to establish standard operating procedures for negative isolation room for door opening and closing speeds.

• Clinical and Experimental Pediatrics
• /
• 제59권11호
• /
• pp.446-450
• /
• 2016

Purpose: Generally, aspirin is used as a protective agent against thrombogenic phenomenon after pulmonary valve replacement (PVR) using a bioprosthetic valve. However, the appropriate duration of aspirin use is unclear. We analyzed the impact of postoperative duration of aspirin use on the longevity of bioprosthetic pulmonary valves in patients who underwent repair for congenital heart diseases. Methods: We retrospectively reviewed the clinical data of 137 patients who underwent PVR using a bioprosthetic valve between January 2000 and December 2003. Among these patients, 89 were included in our study and divided into groups I (${\leq}12$ months) and II (>12 months) according to duration of aspirin use. We analyzed echocardiographic data from 9 to 11 years after PVR. Pulmonary vale stenosis and regurgitation were classified as mild, moderate, or severe. Results: The 89 patients consisted of 53 males and 36 females. Their mean age was $14.3{\pm}8.9$ years (range, 2.6-48 years) and body weight was $37.6{\pm}14.7kg$ (range, 14-72 kg). The postoperative duration of aspirin use was $7.3{\pm}2.9$ months in group I and $32.8{\pm}28.4$ months in group II. However, no significant difference in sex ratio, age, body weight, type of bioprosthetic valve, and number of early redo-PVRs. In the comparison of echocardiographic data about 10 years later, no significant difference in pulmonary valve function was found. The overall freedom rate from redo-PVR at 10 years showed no significant difference (P=0.498). Conclusion: Our results indicated no benefit from long-term aspirin medication (>6 months) in patients who underwent PVR with a bioprosthetic valve.