• Journal of Microbiology and Biotechnology
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• v.23 no.2
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• pp.177-183
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• 2013

Bacterial blight, an important and potentially destructive bacterial disease in rice caused by Xanthomonas oryzae pv. oryzae (Xoo), has recently developed resistance to the available antibiotics. In this study, mass spectrometry (MS)-based metabolite profiling and multivariate analysis were employed to investigate the correlation between timedependent metabolite changes and antimicrobial activities against Xoo over the course of Phomopsis longicolla S1B4 fermentation. Metabolites were clearly differentiated based on fermentation time into phase 1 (days 4-8) and phase 2 (days 10-20) in the principal component analysis (PCA) plot. The multivariate statistical analysis showed that the metabolites contributing significantly for phases 1 and 2 were deacetylphomoxanthone B, monodeacetylphomoxanthone B, fusaristatin A, and dicerandrols A, B, and C as identified by liquid chromatography-mass spectrometry (LC-MS), and dimethylglycine, isobutyric acid, pyruvic acid, ribofuranose, galactofuranose, fructose, arabinose, hexitol, myristic acid, and propylstearic acid were identified by gas chromatography-mass spectrometry (GC-MS)-based metabolite profiling. The most significantly different secondary metabolites, especially deacetylphomoxanthone B, monodeacetylphomoxanthone B, and dicerandrol A, B and C, were positively correlated with antibacterial activity against Xoo during fermentation.

• Journal of Convergence for Information Technology
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• v.10 no.2
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• pp.138-145
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• 2020

The purpose of this study is to identify factors influencing suicidal ideation for the elderly living alone. Utilizing the identified factors as the base data, the study aims to develop community programs for suicide prevention. This research is a secondary analysis of the 2017 national survey, 'Survey on the Elderly,' conducting logistics regression analysis on the data collected on 10,299 elderly aged 65 or older living in 17 general residential facilities as of 2017. The analysis reveals that 10.5% of the elderly living alone have contemplated suicide. The frequency of suicidal ideation was attributed to such factors as gender, age, chronic disease, depression and experiences of abuse and discrimination. To prevent suicide among the elderly, therefore, active management from both public and private sectors are needed for early detection of chronic diseases and depression.

• IMMUNE NETWORK
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• v.13 no.6
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• pp.240-248
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• 2013

In this study, we compared the immune cell populations in rheumatoid arthritis (RA) synovial fluid, which shows lymphoid tissue-like structure, with those in tonsils, which are normal secondary lymphoid tissues. Firstly, we found that $CD4^-CD11b^+$ macrophages were the major population in RA synovial fluid and that B cells were the major population in tonsils. In addition, synovial fluid from patients with osteoarthritis, which is a degenerative joint disease, contained $CD4^+CD11b^+$monocytes as the major immune cell population. Secondly, we categorized three groups based on the proportion of macrophages found in RA synovial fluid: (1) the macrophage-high group, which contained more than 80% macrophages; (2) the macrophage-intermediate group, which contained between 40% and 80% macrophages; and (3) the macrophage-low group, which contained less than 40% macrophages. In the macrophage-low group, more lymphoid tissue inducer (LTi)-like cells were detected, and the expression of OX40L and TRANCE in these cells was higher than that in the other groups. In addition, in this group, the suppressive function of regulatory T cells was downregulated. Finally, CXCL13 expression was higher in RA synovial fluid than in tonsils, but CCL21 expression was comparable in synovial fluid from all groups and in tonsils. These data demonstrate that increased lymphocyte infiltration in RA synovial fluid is correlated with an increase in LTi-like cells and the elevation of the chemokine expression.

• Research in Community and Public Health Nursing
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• v.24 no.4
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• pp.419-426
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• 2013

Purpose: The purpose of this study is to examine factors influencing medication adherence in patients with hypertension. Methods: This study carried out a secondary analysis of data from the 2008 Korean National Health and Nutrition Examination Survey (KNHANES). Stratified sampling was used to select a participant sample that was representative of patients with hypertension throughout the country. Using the SPSS/WIN 18.0 program, data were analyzed using descriptive statistics, $x^2$ test, t-test, and logistic regression. Results: Of the patients with hypertension, 8.8% had showed non-adherence to medication. Medication adherence was associated with age, spouse, Medicare insurance, number of other diseases, and current smoking status. The cases with older age, a spouse, Medicare insurance, higher number of other diseases, and no current smoking status showed significantly high medication adherence. Conclusion: Nursing interventions and further studies are needed to achieve high levels of medication adherence based on factors influencing medication adherence such as age, spouse, Medicare insurance, number of other disease, and current smoking status.

• Journal of Korean Public Health Nursing
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• v.33 no.3
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• pp.364-378
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• 2019

Purpose: This study examined the distribution of the body mass index (BMI) according to gender and age among Korean children and adolescents to compare the distributions of being underweight, normal, overweight, and obese using both Korean and international criteria. Methods: This secondary data analysis utilized the data of the 2016 Korean National Health Examination for School Students Height, weight, and BMI distributions among children and adolescents were analyzed using descriptive statistics, and the differences in BMI distribution according to gender and age were analyzed using chi-square tests. Differences in the mean BMI according to the Korean Centers for Disease Control (KCDC), the World Health Organization (WHO), and the International Obesity Task Force (IOTF) criteria were analyzed using ANOVA. Results: Using the IOTF criteria, the prevalence of underweight, overweight, and obesity among grades 1-12 students was 6.7%, 20.8%, and 7.1%, respectively; 1.6%, 21.3%, and 11.8%, respectively, according to the WHO criteria; and 5.8%, 10.1%, and 13.0%, respectively, according to the KCDC criteria. Conclusion: It is recommended to use the IOTF criteria for health promotion programs to target underweight children and adolescents while the WHO and KCDC criteria should be used for health programs for treating obese people.

• Journal of Korean Academy of Nursing
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• v.7 no.1
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• pp.55-62
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• 1977

Varieties of literatures were reviewed in regard to the fundamental concept of day hospital, historical trends, the recipient of its care, facilities and personnel, therapeutic programmes and the follow-up care plans. Through the research the advantages of day hospital were highlighted in order to provide the reference for those who consider planning such health care institution. Since the introduction of the concept of day hospital and its implementation in 1930, many psychiatric patients world over are treated and cared. Patients with specific health problems ; alcoholism, acute or serious psychiatric disease, tendencies of humidor suicidal attempts, and with serious physical problems were excluded from the general recipient. Day hospital were annexed to the psychiatric hospitals in most in instances ; facilities, personnel, except nursing personnel, were shared. All therapeutic care were planned in daley, weekly programmes, and were focussed on socialization. The follow-up care were provided for those participating post- therapy club activities which were planned and introduced ahead. Many advantages of day-hospital care in contrast to the traditional hospitalization care were found: 1. The abrupt discontinuity of his family and other social role is prevented. 2. Therapeutic progress is faster. 3. Lessened economic burden to the family. 4. Behavioral regression is lessened and the lessened fear of hospitalization. 5. Less injury to the patients, self- respect, through lessened anxiety of hospitalization. 6. Incidents of secondary crisis believed to be existing in long term cases are decreased. 7. Therapeutic care implemented in freer atmosphere, better Patient-personnel relationships are created. 8. Varieties of group activities are Induced which enable faster recovery. 9. Patients could engage himself with social activities including getting job on part-time basis. 10. Rehabilitation of patient could be implemented.

• Tuberculosis and Respiratory Diseases
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• v.80 no.4
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• pp.344-350
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• 2017

Bronchial asthma is a disease characterized by the condition of airway hyper-responsiveness, which serves to produce narrowing of the airway secondary to airway inflammation and/or various spasm-inducing stimulus. Nonspecific bronchoprovocation testing is an important method implemented for the purpose of diagnosing asthma; this test measures the actual degree of airway hyper-responsiveness and utilizes direct and indirect bronchoprovocation testing. Direct bronchoprovocation testing using methacholine or histamine may have superior sensitivity as these substances directly stimulate the airway smooth muscle cells. On the other hand, this method also engenders the specific disadvantage of relatively low specificity. Indirect bronchoprovocation testing using mannitol, exercise, hypertonic saline, adenosine and hyperventilation serves to produce reactions in the airway smooth muscle cells by liberating mediators with stimulation of airway inflammatory cells. Therefore, this method has the advantage of high specificity and also demonstrates relatively low sensitivity. Direct and indirect testing both call for very precise descriptions of very specific measurement conditions. In addition, it has become evident that challenge testing utilizing each of the various bronchoconstrictor stimuli requires distinct and specific protocols. It is therefore important that the clinician understand the mechanism by which the most commonly used bronchoprovocation testing works. It is important that the clinician understand the mechanism of action in the testing, whether direct stimuli (methacholine) or indirect stimuli (mannitol, exercise) is implemented, when the testing is performed and the results interpreted.

• Physical Therapy Korea
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• v.9 no.2
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• pp.43-50
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• 2002

This study was designed to identify the effects of walking conditions (normal walking vs. toe-walking) on electromyographic (EMG) activity of gastrocnemius, tibialis anterior, and soleus muscle. Seven healthy adult males participated in this study. The exclusion criteria were orthopedic or neurologic disease, congenital anomaly or acquired deformity, or pain in low back or lower extremities. The maximal voluntary isometric contraction for each muscle was used for the reference contraction, and EMG activity of each muscle during normal walking and toe-walking was expressed as a percentage of reference contraction. The gait cycle was determined with two foot switches, and gait was normalized as 100% gait cycle for each condition. The maximal values of EMG activity in terminal stance (30~50% of gait cycle) of each condition were compared for data analysis. No significant differences were found in EMG activity of the tibialis anterior and soleus (p>.05), whereas significant decrement was found in EMG activity of gastrocnemius during toe-walking compared to normal walking (p<.05). There is a limitation to generalize the results of this study, because small number of subjects participated for this study and only EMG was used for data collection. The treatment methods should be developed to improve gait efficiency by substituting the weakened muscles secondary to upper motor neuron, or by strengthening the distal muscles in lower extremity.

• Genomics & Informatics
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• v.12 no.4
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• pp.268-275
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• 2014

The harshness of legionellosis differs from mild Pontiac fever to potentially fatal Legionnaire's disease. The increasing development of drug resistance against legionellosis has led to explore new novel drug targets. It has been found that phosphoglucosamine mutase, phosphomannomutase, and phosphoglyceromutase enzymes can be used as the most probable therapeutic drug targets through extensive data mining. Phosphoglucosamine mutase is involved in amino sugar and nucleotide sugar metabolism. The purpose of this study was to predict the potential target of that specific drug. For this, the 3D structure of phosphoglucosamine mutase of Legionella pneumophila (strain Paris) was determined by means of homology modeling through Phyre2 and refined by ModRefiner. Then, the designed model was evaluated with a structure validation program, for instance, PROCHECK, ERRAT, Verify3D, and QMEAN, for further structural analysis. Secondary structural features were determined through self-optimized prediction method with alignment (SOPMA) and interacting networks by STRING. Consequently, we performed molecular docking studies. The analytical result of PROCHECK showed that 95.0% of the residues are in the most favored region, 4.50% are in the additional allowed region and 0.50% are in the generously allowed region of the Ramachandran plot. Verify3D graph value indicates a score of 0.71 and 89.791, 1.11 for ERRAT and QMEAN respectively. Arg419, Thr414, Ser412, and Thr9 were found to dock the substrate for the most favorable binding of S-mercaptocysteine. However, these findings from this current study will pave the way for further extensive investigation of this enzyme in wet lab experiments and in that way assist drug design against legionellosis.

• Plant Resources
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• v.8 no.3
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• pp.202-208
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• 2005

Osmotic stress is one of major limiting factors in crop production. In particular, seasonal drought often causes the secondary disease in the field, resulting in severe reduction in both quality and productivity. Recent efforts have revealed that many genes encoding protein kinases play important roles in osmotic stress signal transduction pathways. Previously, the AtSIK (Arabidopsis thaliana Stress Inducible Kinase) mutants have shown to enhance tolerance to abiotic stresses, accompanying with higher expression of abiotic stress-related genes than did the wild-type plants. In this study, we have transformed potato (cv. Taedong Valley) with the AtSIK expression cassette. Both PCR and RT-PCR using AtSIK-specific primers showed stable integration and expression of the AtSIK gene in individual transgenic lines, respectively. Foliar application of herbicide ($Basta^{(R)}$) at commercial application rate (0.3% (v/v)) revealed another evidence of stable gene introduction of T-DNA which includes the bar gene for herbicide resistance. Overexpression of the AtSIK gene under dual CaMV35S promoter increased sensitivity to salt stress (300 mM NaCl), which was demonstrated by the reduction rate of chlorophyll contents in leaves of transgenic potato lines. These results suggest that possible increase of osmotic tolerance in potato plants may be achieved by antisense expression of AtSIK gene.