1.Photocatalytic antifungal activity against candida albicans by TiO2 coated acrylic resin denture base.
Ji Yeon YANG ; Hee Jung KIM ; Chae Heon CHUNG
The Journal of Korean Academy of Prosthodontics 2006;44(3):284-294
Statement of problem. Proliferation of Candida albicans is primarily within the plaque on the fitting surface of the denture rather than on the inflamed mucosa. Consequently, the treatment of the denture is equally important as treatment of the tissue. Cleansing and disinfection should be efficiently carried-out as the organisms can penetrate into the voids of the acrylic resin and grow in them, from which they can continue to infect and reinfect bearing tissues. Purpose. The purpose of this study was to evaluate the applicability of photocatalytic reaction to eliminate Candida albicans from acrylic resin denture base, and to investigate the antifungal effect with various UVA illumination time. Materials and Methods. The specimens were cured by the conventional method following the manufacturer's instruction using thermal polymerized denture base resin (Vertex RS; Dentimex, Netherlands). TiO2 photocatalyst sol(LT), which is able to be coated at normal temperature, was made from the Ti-alkoxide progenitor. The XRD patterns, TEM images and nitrogen absorption ability of the TiO2 photocatalyst sol(LT) were compared with the commercial TiO2 photocatalyst P-25. The experimental specimens were coated with the mixture of the TiO2 photocatalyst sol(LT) and binder material (silane) using dip-coater, and uncoated resin plates were used as the control group. Crystallinity of TiO2 of the specimen was tested by the XRD. Size, shape and chemical compositions were also analyzed using the FE-SEM/EDS. The angle and methylene blue degradation efficiency were measured for evaluating the photocatalytic activity of the TiO2 film. Finally, the antifungal activity of the specimen was tested. Candida albicans KCTC 7629(1 ml, initial concentration 105cells/ml) were applied to the experiment and control group specimens and subsequently two UVA light source with 10W, 353 nm peak emission were illuminated to the specimens from 15cm above. The extracted 2 microliter of sample was plated on nutrient agar plate (BactoTM Brain Heart Infusion; BD, USA) with 10 minute intervals for 120 minute, respectively. It was incubated for 24 hours at 37 degree C and the colony forming units (CFUs) were then counted. Results. Compared the characteristics of LT photocatalyst with commercial P-25 photocatalyst, LT were shown higher activity than P-25. The LT coated experimental specimen surface had anatase crystal form, less than 20 nm of particle size and wide specific surface area. To evaluate the photocatalytic activity of specimens, methylene blue degradation reaction were used and about 5% of degradation rate were measured after 2 hours. The average contact angle was less than 20.indicating that the LT photocatalyst had hydrophilicity. In the antifungal activity test for Candida albicans, 0% survival rate were measured within 30 minute after irradiation of UVA light. Conclusion. From the results reported above, it is concluded that the UVA-LT photocatalytic reaction have an antifungal effect on the denture surface Candida albicans, and so that could be applicable to the clinical use as a cleaning method.
Absorption
;
Agar
;
Brain
;
Candida albicans*
;
Candida*
;
Crystallins
;
Denture Bases*
;
Dentures*
;
Disinfection
;
Heart
;
Hydrophobic and Hydrophilic Interactions
;
Lighting
;
Methylene Blue
;
Mucous Membrane
;
Nitrogen
;
Particle Size
;
Polymers
;
Stem Cells
;
Survival Rate
2.Related Factors to Quality of Life among Hospitalized Cancer Patients Undergoing Chemotherapy.
Ji Yeon JEONG ; Hyang Sook SO ; Ji Eun HONG ; Myeong Jeong CHAE ; Geunhye HAN
Asian Oncology Nursing 2012;12(1):84-91
PURPOSE: The purpose of this study was to identify relationships between quality of sleep, symptom cluster, depression, environmental disorder, and quality of life among hospitalized cancer patients. METHODS: The subjects were 114 patients who underwent chemotherapy for colon cancer, gastric cancer, gynecologic cancer and breast cancer. They were recruited from the cancer center of a university hospital. Data were collected from August 4th to 30th, 2011. The questionnaires included the Korean sleep scale A (quality of sleep), MDASI-K (symptom cluster), the environmental sleep disturbing scale, Zung's depression scale, and the Korean version of EORTC QLQ-C30. The collected data was analyzed by t-test, ANOVA, multiple regression analysis using the SPSS 19.0 program. RESULTS: Functional QOL was negatively associated with symptom QOL (r=-.798, p<.001). Symptom cluster, depression, & spouse (46.3%) were the most powerful predictors for functional QOL (46.3%) and symptom QOL (53.4%). CONCLUSION: It is evident that oncology nurses need to evaluate two dimensions of quality of life for cancer patients, for example, functional and symptom QOL. We recommend nurses develop specific protocols for relieving physical symptoms and alleviating depression, and furthermore test the effectiveness of them.
Breast Neoplasms
;
Colonic Neoplasms
;
Depression
;
Humans
;
Quality of Life
;
Spouses
;
Stomach Neoplasms
;
Surveys and Questionnaires
3.The Relationship between Periadmission Blood Pressure and Periinduction Blood Pressure.
Byung Kook CHAE ; Ji Yeon KIM ; Byung Ho LEE ; Seong Ho CHANG
Korean Journal of Anesthesiology 1996;31(5):629-633
BACKGROUND: There has been a study reporting those cases with elevated blood pressure (BP) above 140/90 mmHg on admission and normotension on ward showed more increase in mean arterial pressure(MAP) and pressure-pulse product than the normotensive or hypertensive patients in both situations. But the mean ages of the groups were different each other. This study was done to see if the same results would come without age differences. METHODS: One hundred and sixty-two patients between the age of 45 and 64 were divided into three groups. The patients with BP below 140/90 mmHg on admission and on ward were included in group 1(N=66) and those with BP above 140/90 mmHg on admission and below 140/90 mmHg on ward, in group 2(N=42) and those with BP above 140/90 mmHg in both situations were included in group 3(N=54). Preiinduction BP, PR, the changes of BP, PR during operation, incidence of hypertension at post-anesthesia room(PAR), and the number of cases who needed the use of inotropics or antihypertensives perioperatively were checked. RESULTS: As for the increase of BP just before induction the group 2 showed the greatest, group 1 was the next, and group 3 showed the least compared to ward value. Just after induction group 1 showed the greatest, group 2 the next, and group 3 the least amount increase. As for the increase of preinduction pressure-pulse product(PPP) group 2 showed the greatest, group 3 the next, and group 1 the least compared to ward value. Just after induction group 1 showed the greatest, group 2 the next,and group 3 the least amount increase. CONCLUSIONS: Intensive anesthetic care is needed also at periinduction period for the patients who showed hypertensive BP on admission and normotension on ward thereafter.
Antihypertensive Agents
;
Blood Pressure*
;
Humans
;
Hypertension
;
Incidence
4.Leiomyosarcoma of the penis.
Ji YOO ; Je Jong KIM ; Jae Heung CHO ; Seung Yeon HA ; Yang Seok CHAE
Korean Journal of Urology 1991;32(6):1033-1039
Leiomyosarcoma of the penis is an extremely rare disease. We have encountered a case of leiomyosarcoma of the penis in a 45 year old man. On staging work up. local invasion to corpus cavernosum. but no evidence of lymph node metastasis was evident. After the confirmation of leiomyosarcoma by excisional biopsy, the patient underwent partial penectemy. Herein we report this case with the review of literatures.
Biopsy
;
Humans
;
Leiomyosarcoma*
;
Lymph Nodes
;
Male
;
Middle Aged
;
Neoplasm Metastasis
;
Penis*
;
Rare Diseases
5.Lupus Miliaris Disseminatus Faciei with Extrafacial Involvement.
Ju Yeon CHOI ; Seoung Wan CHAE ; Ji Hye PARK
Annals of Dermatology 2016;28(6):791-794
No abstract available.
6.Maternal Experiences of Anger While Raising a Child
Ji-Hye HWANG ; Soo-Yeon HAN ; Sun-Mi CHAE ; Mi-Ra KIM
Journal of the Korean Society of Maternal and Child Health 2023;27(4):247-255
Purpose:
This study aims to explore mothers’ experiences of anger while raising a child in South Korea based on a qualitative descriptive approach.
Methods:
A total of ten mothers of children aged 1-3 years participated in the study. In-depth individual interviews were conducted from August to September 2019 to collect data, which were then subjected to thematic analysis.
Results:
A total of 4 main themes and 10 subthemes were identified. The 4 themes were “individual and environmental factors that influence anger,” “a vicious cycle of anger expression and guilt,” “being a little bit more mature as a mother,” and “need for anger management.” This study described various causes, ways of expressing, and effects of anger, as well as the mother’s coping strategies. These experiences were viewed as milestones along the journey to becoming a real parent and helped mothers develop empathy for other children and mothers. The participants expressed support for expanding the social support system for child-rearing and providing psychological programs for mothers.
Conclusion
Mothers of children aged 1-3 years experienced anger owing to various factors, but adapted by developing coping skills. This study recommends family-based support interventions to help mothers manage their emotions and parenting roles.
7.Effectiveness of Health Promotion Program Using Action Planning Strategy for Young Adults
Su Hyun KIM ; Min Ji KIM ; Sang Hee KIM ; So Yeon KIM ; Chae Yeon PARK ; Jee Yun BANG
Journal of Korean Academy of Nursing 2019;49(4):461-471
PURPOSE: The purpose of this study was to evaluate the effectiveness of a health promotion program utilizing action planning strategy for young adults. METHODS: A non-equivalent control group pre-post-test design was used. One hundred three university students participated in the study. Participants in the experimental group (n=51) were provided the health promotion program utilizing action planning strategy for five weeks. The program consisted of weekly sessions that included action planning and group feedback. The control group (n=52) was provided with health information every week for 5 weeks. Program outcomes, including self-efficacy, physical activity health behaviors, total exercise time per week, daily cigarette consumption, frequency of alcohol drinking per month, nutritional health behaviors, and subjective health status, were assessed at baseline and at follow-up after 5 weeks. RESULTS: The participants in the experimental group demonstrated significant increases in self-efficacy, physical activity health behaviors, weekly exercise time, and nutritional health behaviors and significant decreases in daily cigarette consumption than those in the control group. CONCLUSION: The health promotion program utilizing action planning strategy is a brief and effective intervention to promote health behaviors among young adults. Further investigation is warranted to assess the program's effectiveness among other age groups and populations at high risk for chronic illness.
Alcohol Drinking
;
Chronic Disease
;
Diagnostic Self Evaluation
;
Follow-Up Studies
;
Health Behavior
;
Health Promotion
;
Humans
;
Motor Activity
;
Self Efficacy
;
Tobacco Products
;
Young Adult
8.Effectiveness of Health Promotion Program Using Action Planning Strategy for Young Adults
Su Hyun KIM ; Min Ji KIM ; Sang Hee KIM ; So Yeon KIM ; Chae Yeon PARK ; Jee Yun BANG
Journal of Korean Academy of Nursing 2019;49(4):461-471
PURPOSE:
The purpose of this study was to evaluate the effectiveness of a health promotion program utilizing action planning strategy for young adults.
METHODS:
A non-equivalent control group pre-post-test design was used. One hundred three university students participated in the study. Participants in the experimental group (n=51) were provided the health promotion program utilizing action planning strategy for five weeks. The program consisted of weekly sessions that included action planning and group feedback. The control group (n=52) was provided with health information every week for 5 weeks. Program outcomes, including self-efficacy, physical activity health behaviors, total exercise time per week, daily cigarette consumption, frequency of alcohol drinking per month, nutritional health behaviors, and subjective health status, were assessed at baseline and at follow-up after 5 weeks.
RESULTS:
The participants in the experimental group demonstrated significant increases in self-efficacy, physical activity health behaviors, weekly exercise time, and nutritional health behaviors and significant decreases in daily cigarette consumption than those in the control group.
CONCLUSION
The health promotion program utilizing action planning strategy is a brief and effective intervention to promote health behaviors among young adults. Further investigation is warranted to assess the program's effectiveness among other age groups and populations at high risk for chronic illness.
9.Effect of Additional Ecabet Sodium on Conventional Triple Therapy for Helicobacter pylori Eradication in Korea.
Ji Yeon KIM ; Dong Ho LEE ; Jun Hyuk SON ; Jae Yeon KIM ; Ji Eun KWON ; Young Soo PARK ; Nayoung KIM ; Cheol Min SHIN ; Hyun Chae JUNG ; In Sung SONG
Korean Journal of Gastrointestinal Endoscopy 2011;42(6):349-355
BACKGROUND/AIMS: Ecabet sodium is known for its bactericidal effect against H. pylori. It was reported that a supplement of ecabet sodium to conventional triple therapy showed good results in Asia. The Aim of this study was to ascertain the efficacy of additional ecabet sodium on conventional triple therapy for eradication of H. pylori. METHODS: We reviewed the cases of 111 patients (Group A) with H. pylori infection who received ecabet sodium with triple therapy (20 mg of rabeprazole, 1 g of amoxicillin, 500 mg of clarithromycin and 1 g of ecabet sodium, twice daily for 7 days). Another 186 patients (Group B) received PPI-based triple therapy (same as the above, except without the ecabet sodium). Eradication was evaluated 4 weeks later after completion of treatment by 13C-UBT. RESULTS: Eradication rates were 74.8% (83/111) in group A and 70.4% (131/186) in group B by intention-to-treat analysis (p=0.420), and 75.2% (82/109) in group A and 70.7% (128/181) in group B by per protocol analysis (p=0.405). CONCLUSIONS: The addition of ecabet sodium to conventional triple therapy did not increase the eradication rate of H. pylori in this study. These findings imply that ecabet sodium as an additional agent cannot overcome antibiotic resistance, which is the most important cause of failure of triple therapy.
2-Pyridinylmethylsulfinylbenzimidazoles
;
Amoxicillin
;
Asia
;
Clarithromycin
;
Diterpenes, Abietane
;
Drug Resistance, Microbial
;
Helicobacter
;
Helicobacter pylori
;
Humans
;
Korea
;
Sodium
10.Synergistic Effect of Dermatophagoides farinae and Lipopolysaccharides in Human Middle ear Epithelial Cells.
Ji Eun LEE ; Yeon Hoo KIM ; Chae Seo RHEE ; Dong Young KIM
Allergy, Asthma & Immunology Research 2016;8(5):445-456
PURPOSE: Although the concept of "one airway, one disease," which includes the middle ear space as part of the united airway is well recognized, the role of allergens in otitis media with effusion (OME) is not clearly understood. We aimed to investigate the effect of the interaction between Dermatophagoides farinae (Der f) and lipopolysaccharide (LPS) on the induction of epithelial inflammatory response in vitro. METHODS: Primary human middle ear epithelial cells were exposed to Der f, LPS, or both in different sequences, and the magnitude of the immunologic responses was compared. The mRNA expressiona of mucin (MUC) 4, 5AC, 5B, 8, GM-CSF, TNF-α, TLR4, and MD-2 were evaluated using real-time PCR. MUC levels before and after siRNA-mediated knockout of TLR4 and MD-2 were assessed. Lastly, the involved cell signaling pathway was evaluated. RESULTS: The expressiona of cytokines, and the MUC 4, 5AC, 5B, and 8 genes were augmented by pretreatment with Der f followed by LPS; however, reverse treatment or combined treatment did not induce the same magnitude of response. Increased MUC expression was decreased by TLR4 knockdown, but not by MD-2 knockdown. The signal intensity of MUC 8 was higher in MD-2 over-expressed cells than in those exposed to LPS only. The translocation of nuclear factor-κB was observed in cells pretreated with Der f followed by LPS. CONCLUSIONS: When Der f treatment preceded LPS exposure, Der f and LPS acted synergistically in the induction of pro-inflammatory cytokines and the MUC gene, suggesting an important role in the development of OME in patients with concealed allergy airway sensitization.
Allergens
;
Cytokines
;
Dermatophagoides farinae*
;
Ear, Middle*
;
Epithelial Cells*
;
Granulocyte-Macrophage Colony-Stimulating Factor
;
Humans*
;
Hypersensitivity
;
Immunity, Innate
;
In Vitro Techniques
;
Lipopolysaccharides*
;
Mucins
;
Otitis Media with Effusion
;
Pyroglyphidae*
;
Real-Time Polymerase Chain Reaction
;
RNA, Messenger
;
Toll-Like Receptors