• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.157-157
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• 2022

Plants being sessile are prone to various abiotic challenges, including salinity. Plants generally cope with salt stress by regulating their endogenous NO levels. NO exogenously applied in various forms also successfully impedes the salt stress, but its small size, short half life, and high volatility rate hamper its application in agriculture. NO application via CS as a nanocarrier is an alternate option to ensure the optimal kinetic release of NO for a long period compared to the free NO form. Herein, we synthesized and characterized GSNO-CS NP by ionic gelation of TPP with CS and then reacting with GSH, followed by reaction with NaNO₂ suspension. The synthesized NPs were characterized using non-destructive analytical techniques such as DLS, FTIR, and SEM to ensure their synthesis and surface morphology. NO-release profile confirmed optimal kinetic NO release for 24 h from NO-CS NP as compared to free NO form. The efficiency of NO-CS NP was checked on Arabidopsis plants under salinity stress by gauging the morphological, physiological, and enzymatic antioxidant system and SOS pathway gene expression levels. Overall, the results revealed that NO-CS NP successfully mitigates salinity stress compared to free GSNO. Concluding, the findings provide sufficient experimental evidence for the application of nanotechnology to enhance NO delivery, thus inducing more benefits for the plants under stress conditions by mitigating the deleterious impacts of salt stress on the morphological and physiological status of the plants, and regulating the ions exchange by overexpression of SOS pathway candidate genes.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.20 no.4
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• pp.419-428
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• 2013

Purpose: This study was done to explore the level of life stress, depression, and suicidal ideation and to identify the associated factors of suicidal ideation (SI) among college nursing students. Method: The design of this study was a descriptive survey design using a convenience sampling. Data collection was done using self-questionnaire from 124 students in 2 universities located in Gyeonggi and Chungnam provinces. The collected data were analyzed using descriptive statistics, ANOVA, t-test, Pearson correlation coefficients, and hierarchical multiple regression. Results: Study participants reported low level of SI, depression, and life stress ($44.45{\pm}19.21$, $8.40{\pm}5.94$, $40.65{\pm}32.17$). The 53% of variance in SI was significantly explained by life stress related value (${\beta}=.41$, p<.001), life stress related to interpersonal relationship with family (${\beta}=.19$, p=.014), life stress related to interpersonal relationship with friends (${\beta}=.34$, p<.001), and depression (${\beta}=.36$, p<.001). Conclusions: The results indicate that to decrease the SI in these students, an active interest in the students is needed to lower stress levels in interpersonal relationships with family and friends, in life stress related to value, and for relief of depression. Suicide prevention programs specific to the level of life stress and depression need to be developed for nursing students.

• Journal of Ginseng Research
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• v.43 no.2
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• pp.252-260
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• 2019

Background: Increases in the average global temperature cause heat stress-induced disorders by disrupting homeostasis. Excessive heat stress triggers an imbalance in the immune system; thus protection against heat stress is important to maintain immune homeostasis. Korean ginseng (Panax ginseng Meyer) has been used as a herbal medicine and displays beneficial biological properties. Methods: We investigated the protective effects of Korean ginseng extracts (KGEs) against heat stress in a rat model. Following acclimatization for 1 week, rats were housed at room temperature for 2 weeks and then exposed to heat stress ($40^{\circ}C$/2 h/day) for 4 weeks. Rats were treated with three KGEs from the beginning of the second week to the end of the experiment. Results: Heat stress dramatically increased secretion of inflammatory factors, and this was significantly reduced in the KGE-treated groups. Levels of inflammatory factors such as heat shock protein 70, interleukin 6, inducible nitric oxide synthase, and tumor necrosis factor-alpha were increased in the spleen and muscle upon heat stress. KGEs inhibited these increases by down-regulating heat shock protein 70 and the associated nuclear $factor-{\kappa}B$ and mitogen-activated protein kinase signaling pathways. Consequently, KGEs suppressed activation of T-cells and B-cells. Conclusion: KGEs suppress the immune response upon heat stress and decrease the production of inflammatory cytokines in muscle and spleen. We suggest that KGEs protect against heat stress by inhibiting inflammation and maintaining immune homeostasis.

• Journal of Convergence for Information Technology
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• v.7 no.1
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• pp.81-86
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• 2017

Nowadays, many college students have difficulty in finding employment. The current research intends to identify how their preparation for job seeking competence affects their stress in college life. For that purpose, the research subjects consist of a group of 158 students taking liberal arts classes at N University located in Cheonan, Korea. A set of analysis methods were utilized to verify of the relationship between their jop seeking preparation competence and stress from college life: an exploratory factor analysis, a correlation analysis and a univariate variance analysis. As a result, there was statistically significant effect of stress in college life and job seeking preparation confidence according to grade, and there was no correlation between stress college life and job seeking preparation confidence. Colleges, thus, should plan and design practical and systematic measures to help them enhance their job seeking competence at college. The results of the analysis are also expected to provide college students with suggestions that might help understand required qualities by the industry and society.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.20 no.2
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• pp.168-176
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• 2013

Purpose: The purpose of this study was to identify factors affecting quality of life according to Body Mass Index (BMI) of women college students. Methods: The research design was a descriptive survey design using a convenience sampling. Data were collected using self-report questionnaires. Participants were 348 women college students. Data analysis was done using SPSS/WIN 18.0 program for descriptive statistics, Pearson correlation coefficients and hierarchial multiple regression. Results: According to BMI, 3 groups of students were identified. Differences between the groups for quality of life were significant. The major factors affecting quality of life in the underweight group were departments (college), body stress and ego-resilience which explained 27.9% of the variance in quality of life. Body stress and ego-resilience were significant predictors explaining 23.1% of the variance in quality of life in the normal weight group. Ego-resilience was also a significant predictor in the overweight group explaining 15.2% of the variance in quality of life. Conclusion: Findings indicate a need to decrease body stress and strengthen ego-resilience to improve quality of life of women college students. Further studies are needed to examine nursing intervention strategies for improving quality of life for women college students.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.247-257
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• 2017

The purpose of this study was to measure the depression level of college students and to analyze the effects of college life stress and circadian rhythm on depression. A questionnaire survey was conducted to 720 students of college in Gwangju area from October 10, 2016 to October 31, and 687 of the collected questionnaires were analyzed. As this result, 34.5% of the students needed treatment for depression, and 71.6% of the students had mild depression. Second, depression was higher in female students, in higher grade students and students living apart from their parents. Third, evening activity type showed higher depression than morning activity type. Fourth, regression analysis revealed that depression was influenced by stress of value problem, circadian rhythm, academic stress, and getting a job stress. The results of this study suggest that students should be able to detect depression early and run a mental health program to relieve college life stress in college. However, this study is limited to some local college students and is not suitable for generalization. It is necessary to conduct research to compare university students and college students in the future.

• The Korean Journal of Rehabilitation Nursing
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• v.13 no.2
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• pp.114-122
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• 2010

Purpose: The purpose of this study was to identify the health promotion, stress and the quality of life and relationship between those factors in patients with genital neoplasms. Method: Data of 151 subjects with genital neoplasms were collected from August 15 to October 12, 2009 at out-patient clinic in one general hospital in Daegu. Results: The mean score of health promotion of the subjects was 1.49 (${\pm}0.53$), stress of gynecologic cancer was 1.36 (${\pm}0.76$) and the quality of life of the subjects was 2.38 (${\pm}0.59$). There was a negative correlation between the quality of life and stress (r=-.482, p<.001), and positive correlation between the quality of life and health promotion (r=.442, p<.001) in the subjects. Conclusion: This study showed correlations between the health promotion, stress and the quality of life of patients with genital neoplasms. The quality of life of the patients with genital neoplasms was low when their stress was high. In contrast, their quality of life was high when the score of health promotion was high. Considering the research findings, it is necessary to develop a health promotion program for patients with genital neoplasms to strengthen their health promotion behaviors.

• Development and Reproduction
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• v.22 no.3
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• pp.235-244
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• 2018

We investigate the effect of endoplasmic reticulum (ER) stress inhibitor treatment during parthenogenetic activation of oocytes on the ER stress generation, apoptosis, and in vitro development of parthenogenetic porcine embryos. Porcine in vitro matured oocytes were activated by 1) electric stimulus (E) or 2) $E+10{\mu}M$ Ca-ionophore (A23187) treatment (EC). Oocytes were then treated by ER stress inhibitors such as salubrinal (200 nM) and tauroursodeoxychloic acid (TUDCA, $100{\mu}M$) for 3 h prior to in vitro culture. Parthenogenetic embryos were sampled to analyze ER stress and apoptosis at the 1-cell and blastocyst stages. The x-box binding protein 1 (Xbp1) mRNA and ER stress-associated genes were analyzed by RT-PCR or RT-qPCR. Apoptotic gene expression was analyzed by RT-PCR. At the 1-cell stage, although no difference was observed in Xbp1 splicing among treatments, BiP transcription level in the E group was significantly reduced by salubrinal treatment, and GRP94 and ATF4 transcription levels in EC group were significantly reduced by all treatments (p<0.05) compared to control. In the EC group, both apoptotic genes were reduced by ER stress inhibitor treatments compared to control (p<0.05) except Caspase-3 gene by TUDCA treatment. These results suggest that the treatment of ER stress inhibitor during parthenogenetic activation can reduce ER stress, and thereby reduce apoptosis and promote in vitro development of porcine parthenogenetic embryos.

• Journal of Convergence for Information Technology
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• v.12 no.3
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• pp.204-213
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• 2022

This study was conducted to investigate the stress and temporomandibular joint disorders that can affect the oral health level of college students and to identify the relationship between oral health-related quality of life. Data survey was conducted from June 3, 2021 to July 8, 2021, targeting 227 college students in some areas of Daejeon, and was analyzed using independent sample t-test, one-way ANOVA, Pearson correlation analysis, and multiple regression analysis. As a result, temporomandibular joint disorder showed a positive correlation with all stress sub-factors, and oral health-related quality of life showed a negative correlation with all stress sub-factors and temporomandibular joint disorder. Also, it was found that temporomandibular joint disorder, interpersonal stress, and values stress had an effect on oral health-related quality of life. Based on the above results, it is required to find a systematic way to improve the quality of life related to oral health by preventing stress and temporomandibular joint disorder among college students.

• Nutrition Research and Practice
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• v.17 no.1
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• pp.91-102
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• 2023

BACKGROUND/OBJECTIVES: This study examines life stress, dietary attitudes, and snacking frequency for college students living in Seoul and Gyeonggi Province. The purpose of this study is to assist college students feeling stressed by offering desirable dietary attitudes and choices of the appropriate snacks by providing educational materials that offer appropriate nutrition education and nutritional information. SUBJECTS/METHODS: A survey was conducted on a total of 600 college students aged 19-29-year-olds living in Seoul and Gyeonggi Province (234 male students and 366 female students). Collected data were analyzed using SPSS WIN 28.0 program. RESULTS: Life stress among college students did not differ significantly between the genders. Male students were more stressed about lover (P < 0.01), while female students were more stressed about value problems (P < 0.01) and future problems (P < 0.05). Dietary attitude ratings were 3.1 for both male and female students with no significant difference. The overall snacking frequency was 4.1 times/day-4.2 times/day for male students and 4.0 times/day for female students-thus, there was no significant difference. Male students consumed 'beverage' (P < 0.01) more frequently than female students. Life stress and snacking were positively correlated for 'biscuit/cookie,' 'chip,' 'cereal,' 'juice/smoothie,' 'café americano,' 'café latte,' 'tea,' 'jelly,' 'chocolate,' 'rice cake,' 'milk,' 'flavored milk,' and 'ice cream' among male students. Among female students, life stress and snacking were positively correlated with 'cereal,' 'caramel,' and 'soymilk,' and negatively correlated for 'biscuit/cookie' and 'carbonated drink.' CONCLUSIONS: College students should manage their stress by identifying its causes and learning how to deal with stressful situations. Additionally, providing them with proper nutrition education based on the correct nutritional information is essential for promoting good food attitudes and snacking behaviors.