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치주염에 이환되어 발거된 치아의 치주인대가 없는 치근표면에 EDTA처리를 한 후 3차원적으로 배양한 사람치주인대섬유모세포의 부착에 관한 주사전자현미경적 연구
조아영,김병옥,박주철,김흥중,장현선,cho, Ah-Young,Kim, Byung-Ock,Park, Joo-Cheol,Kim, Heung-Jeong,Jang, Hyun-Seon 대한치주과학회 2007 Journal of Periodontal & Implant Science Vol.37 No.1
This study evaluated the possibility of the 3-dimensional attachment of human periodontal ligament fibroblasts to a periodntally involved root surface after an EDTA treatment in vitro. The human PDL fibroblasts were isolated from the middle third of the root of periodontally healthy teeth extracted for orthodontic reasons. The cells were cultured in a medium containing Dulbecco's modified Eagle medium supplemented with 10% fetal bovine serum at $37^{\circ}C$ in humidified air containing 5% $CO_2$. Eight single-rooted teeth were obtained from patients diagnosed with periodotitis. After scaling and root planing, four teeth were etched with 24% ethylenediaminetetracetic acid (EDTA) for two minutes (Experimental group). The other four teeth were not treated with EDTA and were used as the control group. The human PDL fibroblasts were placed in the total root surface and cultured for 4 weeks. The teeth were fixed in 2.5% glutaraldehyde in PBS before preparation for the scanning electron microscopy (SEM) examination. The human PDL fibroblasts showed a healthy morphology on the root surfaces treated with EDTA (Experimental group) and a relatively unhealthy appearance on the treated root surfaces (Control group). This suggests that EDTA favorably affects the 3-dimensional attachment of human PDL fibroblasts cultured on the root surfaces. which may play an important role in periodontal healing and regeneration.
청소년의 지각된 스트레스가 학교생활적응에 미치는 영향: 우울을 통한 자아존중감의 조절된 매개효과
조아영 ( Cho Ah-young ),최수미 ( Choi Su-mi ),강영주 ( Kang Young-jue ),방세림 ( Bang Se-rim ) 한국청소년학회 2024 청소년학연구 Vol.31 No.4
본 연구는 청소년의 지각된 스트레스가 우울을 통해 학교생활적응에 미치는 영향을 알아보고 그 경로에서 자아존중감의 조절된 매개효과를 검증하는데 목적이 있다. 연구대상은 2021년 한국청소년정책연구원의 10대 청소년의 정신건강 실태조사 자료에 응답한 학생 청소년 5,937명이다. 자료의 분석을 위해 SPSS 21.0, PROCESS Macro 4.2버전을 사용하여 매개효과, 조절효과, 조절된 매개효과 분석을 순차적으로 실시하였으며, 연구의 결과는 다음과 같다. 첫째, 청소년의 지각된 스트레스와 학교생활적응 간의 관계에서 우울의 부분매개효과가 나타났다. 둘째, 청소년의 지각된 스트레스와 우울 간의 관계에서 자아존중감의 조절효과가 나타났다. 셋째, 청소년의 지각된 스트레스가 우울을 통해 학교생활적응에 영향을 미치는 경로에서 자아존중감의 조절된 매개효과가 나타났다. 이는 청소년이 지각하는 스트레스가 우울을 매개로 학교생활적응에 영향을 미치지만, 청소년의 자아존중감을 증진시킴으로써 지각된 스트레스가 학교생활적응에 미치는 영향을 감소시킬 수 있음을 의미한다. 마지막으로 청소년의 학교생활적응 향상을 위한 개입 방안과 연구의 시사점을 논의하였다. The purpose of this study is to investigate the influence of perceived stress on school adaption through depression of adolescents and to verify the moderated mediating effects of self-esteem in the path. The subjects of this study were 5,937 students who responded to the data on the Mental Health Status of Teenage Adolescents by the Korea Youth Policy Institute in 2021. For the analysis of the data, mediating effect, moderating effect, and moderated mediating effect analysis were sequentially performed using SPSS 21.0 and PROCESS Macro 4.2 versions. And the results of the study are as follows. First, there was a partial mediating effect of depression in the relationship between perceived stress and school adaption of adolescents. Second, the moderating effect of self-esteem was found in the relationship between perceived stress and depression of adolescents. Third, a moderated mediating effect of self-esteem was found in the path where perceived stress of adolescents affected school adaption through depression. This means that the stress perceived by adolescents affects school adaption through depression, but the effect of perceived stress on school adaption can be reduced by promoting adolescents' self-esteem. Finally, intervention measures to improve adolescents' school adaption and the implications of the study were discussed.
조아영 ( Ah Young Cho ),박영옥 ( Young Ok Park ),이영 ( Young Lee ),김창덕 ( Chang Duk Kim ),서영준 ( Young Joon Seo ),이증훈 ( Jeung Hoon Lee ),박장규 ( Jang Kyu Park ) 대한피부과학회 2009 大韓皮膚科學會誌 Vol.47 No.1
Background: Vitiligo is an acquired pigmentary disorder and half of these patients experience disease onset during childhood. The psychosocial complications of vitiligo can be substantial, and especially for children. There has been no study that has compared the clinical features according to the symmetry of the vitiligo lesions of patients with childhood vitiligo. Objective: The purpose of this study is to evaluate the clinical aspects and distribution of the vitiligo lesions according to the symmetry in patients with childhood vitiligo. Methods: The clinical characteristics and distribution of the vitiligo lesions according to the symmetry were investigated in the 263 childhood patients who were diagnosed with vitiligo at the Dermatology Department of our University Hospital from January 1991 to August 2008. Results: Of the 263 patients, 133 (50.6%) had the asymmetric vitiligo lesions, 76 (28.9%) had the symmetric lesions and 54 (20.5%) had the multiple lesions. Of the patients with asymmetric vitiligo lesions, 91 (34.6%) had the localized lesions and 42 (16.0%) had the segmental lesions. The most common site of the vitiligo lesions was the face (54.8%). In case of the vitiligo lesions on the scalp, face and neck, the asymmetric type was predominant. The lesions on the scalp and the face showed a lesser tendency to spread to other sites. Conclusion: Childhood vitiligo showed the higher prevalence of asymmetric vitiligo lesions. It is expected that the asymmetric type of childhood vitiligo, and especially that on the scalp and the face, may have a favorable clinical course. (Korean J Dermatol 2009;47(1):36~42)