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대장암 세포주에서 메타아비산 나트륨에 의한 G1 세포주기 정지
홍윤경(Yunkyung Hong),김선미(Sunmi Kim),이승훈(Seunghoon Lee),강재선(Jae Seon Kang),홍용근(Yonggeun Hong) 대한약학회 2011 약학회지 Vol.55 No.5
KML001 reduced the proliferation of HCT116 cells in a concentration- and time-dependent manner without change of cell viability. Beclin-1 expression was significantly attenuated by KML001 (P<0.05), but no significant changes were observed in KML001-treated cells. The number of cells in G1 phase was increased 48 hr after KML001 treatment. Furthermore, a dramatic reduction in the frequency of beating and the number of embryoid bodies of the cells was noted after treatment. Taken together, KML001 suppresses the proliferation of HCT116 cells, which might be due to G1 phase arrest.
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임상실습에서 간호대학생이 경험하는 간호사의 무례함, 대처가 소진에 미치는 영향
홍윤경(Hong, Yunkyung),김영혜(Kim, Younghae),손현미(Son, Hyunmi) 한국간호행정학회 2016 간호행정학회지 Vol.22 No.4
Purpose: The purpose of this study was to identify the effects of nurse’s incivility experienced by nursing students and coping against incivility on burnout in clinical practice. Methods: A cross-sectional correlation study design was used. The subjects were 120 nursing student from four universities in Busan and Yangsan, South Korea. A self-report questionnaire was used to collect data on incivility, coping, and burnout. Finally total 117 nursing students’ data was analyzed except 3 nursing students who had never experienced nurse’s incivility for clinical practice. Data analyzed using descriptive statistics, Pearson correlation coefficient, independent t-test, ANOVA, and multiple regression. Results: 97.5% of subjects (n=120) experienced incivility. Incivility was positively correlated with seeking social support coping, avoiding focused coping and burnout. Incivility and avoiding focused coping had a significant positive effect on burnout. The explained variance for burnout was 10.0% and avoiding focused coping was the most significant factor in burnout. Conclusion: Most of nursing students experience the nurses’ incivility. Judging incivility as a difficult problem to solve, students use more avoiding focused coping strategy and burnout is increased. Therefore education is needed to improve the coping strategies at incivility. Additionally colleges and hospitals should establish the formal reporting system to handle the incivility.
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다문화 가족 대상 가정방문 양육지원 프로그램 개발을 위한 델파이 연구
손현미 ( Son Hyunmi ),홍윤경 ( Hong Yunkyung ),한규민 ( Han Gyumin ) 부산대학교 간호과학연구소 2021 글로벌 건강과 간호 Vol.11 No.1
Purpose: This study was conducted to identify essential components of home-visit parenting support programs for multicultural families with young children. Methods: The Delphi method was used with a group of experts to validate the elements. The instrument was developed through focus group interviews and a literature review. We derived 33 draft items on the degree of performance and importance of programs (Domain I), and eight draft items on the need for and urgency of improvement of programs (Domain II). Using surveys comprising items rated on a five-point Likert scale and open-ended items, we conducted two rounds of the Delphi method with 36 and 29 experts, respectively. The content validity ratio (CVR) and Kendall’s W for agreement were calculated for the experts’ opinions. Results: Items with a CVR value of less than .31 in the first Delphi survey were not excluded from the second round to confirm consensus in the latter. As a result of the second Delphi, three items in Domain I and one item in Domain II showed a CVR of .33 or less. Finally, 23 items were derived in Domain I and seven in Domain II. All Kendall’s W values were statistically significant. Conclusion: It is necessary to develop appropriate teaching aids that reflect the needs of the subjects and considers their literacy levels. In addition, it is necessary to expand the target of these programs to multicultural families. This study can be used as a basis for planning and executing programs and services for multicultural families.
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Toll-like Receptor 4-mediated Apoptotic Cell Death in Primary Isolated Human Cervical Cancers
Jinyoung Won(원진영),Yunkyung Hong(홍윤경),Sookyoung Park(박수경),Joo-Heon Kim(김주헌),Yonggeun Hong(홍용근) 한국생명과학회 2018 생명과학회지 Vol.28 No.6
Toll 유사수용체의 TLR4는 세포자연사(apoptosis)와 관련하여 세포의 생존과 증식에 영향을 미치는 것으로 알려져 있다. 본 연구에서는 TLR4의 활성이 부인과 질환 특이적 종양세포의 세포사멸기작에 어떠한 영향을 미치는지 살펴보았다. TLR4의 활성에 의한 세포자연사를 확인하기 위하여 부인암 조직(자궁경부암, 자궁내막암, 난소암)에서 종양세포를 분리하여 초대배양시스템을 구축하였고, lipopolysaccharide (LPS)에 의한 TLR4의 활성유도 과정에서 종양세포의 형태학적 변화를 살펴보았다. 또한, TLR4 매개성 세포사멸 기작을 확인하기 위하여 역전사 중합효소 연쇄반응(RT-PCR)을 통해 유전자 분석을 진행하였다. 연구 결과, 부인암의 초대배양세포에서 세포접촉저지(contact inhibition)현상이 감소되었고, 세포의 배가시간(doubling time)이 단축되어, 종양세포의 성장률 변화를 확인하였다(p<0.05). 자궁근육층(정상조직)의 초대배양세포에서는 민무늬근육 확인 인자인 ITGA5 (an alpha5 integrin marker)의 유전자 발현이 나타났으나, 자궁경부조직의 초대배양세포에서는 발현변화를 확인할 수 없었다. 종양세포의 유전자분석 결과에서 p53과 같은 종양억제인자의 발현이 유의적으로 증가한 반면(p<0.05), 세포사멸 신호기작과 관련하여 TLR4와 Caspase-3의 발현은 감소하였다(Caspase-3, p<0.05). LPS를 처리한 종양세포에서는 LPS 비처리군과 비교 시, TLR4의 발현증가와 함께 Caspase-3의 발현변화가 동반되었다. 이러한 결과들은 TLR4 매개성 apoptosis 유도가 종양세포의 증식억제에 중요한 영향을 미치는 것을 의미하며, TLR4 신호기작을 이용한 종양세포의 새로운 치료적 접근법을 제시할 것으로 기대한다. Toll-like receptor 4 (TLR4) has been implicated in cell proliferation and apoptosis in several types of cancer. In this study, the impact of TLR4 activation on apoptotic cell death in gynecologic cancers induced by lipopolysaccharide (LPS) was investigated. Cervical cancer cell lines were produced from isolated surgical specimens supplied by Paik Hospital. The primary cultures of normal myometrium and gynecologic cancers, including cervical, endometrial, and ovarian cancers, were used to examine the differences in morphological characteristics between normal and cancerous cells. A reverse transcription polymerase chain reaction analysis was used to determine the relative expression levels of TLR4 gene involved in apoptosis-associated signaling in cervical cancer cells. The cancer cell colonies showed a tendency to reach high levels of confluency compared with normal cells. In addition, an enhanced growth rate and loss of contact inhibition were observed in gynecologic cancer cells compared with normal cells (doubling times of 16.6 hr vs. 26 hr, respectively). The expression level of ITGA5, an alpha-5 integrin marker, was upregulated in normal myometrial cells, but this tendency was not exhibited in cervical cancer cells. Furthermore, p53 tumor suppressor gene expression was upregulated, whereas TLR4 and caspase-3 gene expressions were downregulated in cervical cancer cells. Notably, the expression levels of TLR4 and caspase-3 were increased significantly in LPS-treated cancer cells compared with those in non-LPS-treated cells. These results suggest that the TLR4-mediated caspase-dependent apoptotic signaling pathway could be suggested as a therapeutic target for the treatment of gynecologic cancers, including cervical cancers.
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