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천연물 도포가 UVB 파로 손상된 C57BL/6 mouse 피부의 색소침착과 염증생성에 미치는 영향
최욱희,안형수,최태윤,진소영,안령미,Choi, Wook-Hee,Ann, Hyoung-Soo,Choi, Tae-Youn,Jin, So-Young,Ahn, Ryoung-Me 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.5
Ultraviolet(UV) radiation causes a variety of biological effects on the skin, including inflammation, pigmentation, photoaging and cancer. Free radicals are involved in inflammatory skin reactions induced by UVB radiation. In this study, we investigated the effects of antioxidants(Tea, Korean red ginseng, Ginkgo biloba extract) on UVB-induced skin damage. Tea, KRG and EGb 761 were topically treated to dorsal skin of ICR mouse. The mice were also treated soon after IMED ($1.4KJ/m^{2}$) of UVB irradiation. Skin pigmentation of irradiated mouse was observed by a chromameter after 2 weeks. Topical application of Tea, KRG and EGb 761 for 2 weeks decreased skin pigmentation compared to DVB control group(p<.05). Tea, KRG and EGb 761 also reduced UVB-induced infiltration of inflammatory cells. These results showed that Tea, KRG and EGb 761 as a topical application may have preventive effect against UVB-induced skin damage.
흡연상태에 관한 자가보고 설문의 타당도 평가: 제1기(2009-2011) 국민환경보건기초조사 자료 분석
최욱희,박경화,김현정,류정민,유승도,최경희,김수진,Choi, Wookhee,Park, Kyung Hwa,Kim, Hyun Jeong,Ryu, Jungmin,Yu, Seung Do,Choi, Kyunghee,Kim, Suejin 한국환경보건학회 2014 한국환경보건학회지 Vol.40 No.6
Objectives: The purpose of this study was to assess the validity of self-reported cigarette smoking status and investigate factors associated with the accuracy self-reported and measured urinary cotinine in Korean adults. Methods: We used data from the $1^{st}$ Korean National Environmental Health Survey (2009-2011) among adults aged ${\geq}19$ years (N=6,246). The survey examined self-reported smoking status, and urinary cotinine was regarded as the biomarker of exposure to tobacco smoke. Urinary cotinine was analyzed using a gas chromatography-mass spectrometry (GC/MS) and data analysis was conducted using IBM SPSS version 20.0, which uses the sample weight and calculates variance estimates to adjust for the unequal probability of selection into the survey. Results: We calculated a cut-off point (53.3 ug/L) by using a ROC (Receiver Operating Characteristic) curve. The smoking prevalence was 24.6% based on self-reported data and 28.2% based on urinary cotinine concentrations. When we assessed the agreement between self-reported and urinary cotinine, we found an average agreement of 97.7% among self-reported smokers and 94.5% among self-reported non-smokers. Among self-reported smokers, factors affected the discrepancy were age, household economic status and average number of cigarettes smoked per day. On the other hand, gender, former smoking experience, and exposure to SHS (second hand smoke) were associated with discrepancies among self-reported non-smokers. Conclusion: These results suggest that self-reported data on smoking status provide a valid estimate of actual smoking status. In future research, we will conduct a continuous monitoring study for reliability verification of the data to reduce potential interpretation errors.
ICR mouse의 피부와 간에서 자외선 B파에 의한 Heme Oxygenase-1의 유도
최욱희,김태환,안령미,Choi, Wook-Hee,Kim, Tae-Hwan,Ahn, Ryoung-Me 한국환경보건학회 2008 한국환경보건학회지 Vol.34 No.1
The induction of heme oxygenase-1(HO-1) by UV radiation provides a protective defence against oxidative stress, and has been well demonstrated in skin irradiated with UVA, but not UVB. In this study, we show that the induction of cutaneous HO-l can be attributed to UVB radiation. The expression of HO-1 mRNA was assessed in vivo by reverse transcription-polymerase chain reaction (RT-PCR) analysis, and HO-1 enzyme activity was measured in microsomal preparation from irradiated mice. The mRNA level of HO-1 increases in liver and skin from 1d to 3d after UVB $(3KJ/m^2)$ exposure. The results of gene expression were same pattern of HO-1 enzyme activity in skin, but not in liver. HO-1 mRNA in liver resulted in a progressive increase to 4d after UVB exposure, but HO-1 activity in liver increased to 2d. This finding indicates that UVB radiation is an important inducer of HO-1 and increases in HO activity may protect tissue directly or indirectly from oxidative stress.
ICR mouse에 있어 UVB조사로 유도된 접촉 과민반응에 대한 EGb 761의 억제 효과
최욱희,안형수,안령미,Choi, Wook-Hee,Ann, Hyoung-Soo,Ahn, Ryoung-Me 한국환경보건학회 2005 한국환경보건학회지 Vol.31 No.1
Exposure of skin to UVB radiation can cause the induction of inflammation and impairment of contact hypersensitivity(CHS) response. Several studies have shown that polyphenolic compounds isolated from EGb 761 afford protection against UVB. In this study, we demonstrated that topical application of EGb 761, before 1MED(1.4 KJ/$m^2$), 1.5MED (2.1 KJ/$m^2$), 2MED (2.8 KJ/$m^2$) of UVB exposure to ICR mice prevented UVB-induced inflammation and inhibition of the contact hypersensitivity response. The skin-fold swelling from 1MED, 1.5MED, 2MED of UVB exposure highly significantly increased after twice irradiation. Topical application of EGb 761(0.1%, 1%, 4%), 5 days prior to UVB exposure reduced skin thickness compared to non-treated mice. Exposure of shaved abdominal skin of mice to 1MED, 1.5MED and 2MED of UVB radiation resulted in suppression of contact sensitization through the skin to 56.23%, 65.12%, 74.02%, compared to normal unirradiated skin. Topical application of EGb 761(0.1%, 1%, 4%), 5 days prior to or 5 days after exposure to 1MED and 2MED of UVB resulted in protection against suppression of contact hypersensitivity in mouse dorsal skin. These protective effects were dependent on the dose of EGb 761 employed. The present study show that EGb 761 protect UVB-induced inflammation and immune suppression. Also, we suggest that EGb 761 can provide protection from photoimmunosuppression.
관광목적지로서 부산 갈맷길에 적용한 관광스토리텔링의 개념적 구성요인에 관한 연구
최욱희(Choi, Wook-Hee),양위주(Yhang, Wii-Joo) 동북아시아문화학회 2013 동북아 문화연구 Vol.1 No.37
This study aims to emphasize growing importance of the walking trail as a new creative tourism resource and to identify conceptual dimensions of the trail based on the tourism storytelling. For this purpose, this study investigates not only meaningful dimensions of tourism storytelling for Galmaetgill of Busan from the survey, but also the differences in these conceptual dimensions among the visitor type, gender, and interpreter involvement. The results of the study suggest that tourism storytelling is classified into three conceptual dimensions, including communicativeness, sensitivity, and locality. The t-tests show significant differences in communicativeness according to type of visitors and interpreter involvement while there is no significant difference in gender. Future study should develop extended conceptual dimensions by applying to other trails such as Dulregil of Mt. Jiri and Ollehgil of Jeju.