• 대한의생명과학회지
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• 제6권2호
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• pp.109-118
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• 2000

본 연구는 전자현미경적인 방법을 이용하여 흰쥐 기관지와 폐조직에 미치는 간접흡연의 영향을 조사하였다. 실험동물은 1일 3회씩 매회 15분간, 4주 동안 비주류 담배연기를 흡입하도록 하였다. 간접흡연 그룹의 폐조직에서는 세포질내에 다수의 용해소체을 함유하고 있는 중성구, 그리고 다양한 크기의 용해소체와 잔사체를 함유하는 대식 세포가 관찰되었다. 또한 폐포격벽은 팽대되었으며 섬유화현상이 나타났다. 기관지상피는 섬모상피세포가 점차 소실되었고, 분비세포 또는 배상세포들은 그 수가 증가하였으며, 섬모가 소실되고 표면적이 확장된 배상세포도 관찰되었다. 본 연구결과 이러한 미세구조의 변화는 간접흡연에 의한 세포상해의 전형적인 결과로 파악된다.

• 기본간호학회지
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• 제21권3호
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• pp.253-263
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• 2014

Purpose: This study was done to explore the predictors asssociated with Korean women smokers' intentions to quit smoking. Methods: This study was a cross-sectional study including 3,578 women smokers. Data from the 2010 Community Health Survey conducted by the Korea Centers for Disease Control and Prevention were examined and analyzed using SPSS 21.0 for multiple logistic regression. Results: Of the women smokers 52.2% reported having an intention to quit smoking but only 3.9% had received education in smoking cessation. In the logistic analysis, factors associated with intention to quit smoking were age (Odds ratio and 95% [confidence interval]: 0.97 [0.96-0.98]), health-related quality of life (OR=2.39 [1.14-5.03]), perceived stress (OR=1.11 [1.00-1.22]), marital status (OR=0.93 [.86-1.00]), age of starting to smoke (OR=1.14 [1.04-1.24]), number of cigarettes per day (OR=0.84 [0.76-0.93]), exposure to smoking-quitting campaigns (OR=1.48 [1.22-1.80]), previous attempts at weight-control (OR=1.37 [1.15-1.63]), frequency of alcohol use (OR=1.16 [1.01-1.34]), hypercholesterolemia (OR=1.62 [1.18-2.24]), experiences of trying to quit smoking (OR=4.04 [3.45-4.73]), and regular medical check-up (OR=1.13 [1.03-1.43]). Conclusion: Identifying factors associated with the intentions to quit smoking provides possibilities for shaping effective policies and programs to increase smoking cessation among Korean women.

• 한국환경보건학회지
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• 제45권6호
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• pp.605-612
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• 2019

Objectives: This study aims to examine receptor-perceived characteristics of environmental and health damage in areas surrounded by industrial workplaces using environmental complaints collected by local governments in Korea. Methods: The environmental complaint data related to workplaces was collected by local governments at each municipality between the years 2015 and 2017. We analyzed the complaint data from the Busan area by the type of business (industry classification), the content of complaints (odor, smoke, noise, and certain health damage), and the frequency of complaints. Results: Among the workplaces examined, industry categories related to retail and service received the highest frequency of complaints related to noise. On the other hand, complaints of dust and odors were raised in higher frequency against manufacturing industries, indicating that air pollution was the main driver of such complaints. Most of the complaints regarding health effects from industries also contained other complaints, such as odor, noise, and dust. Our results indicate that environmental discomfort can lead to more serious health damage, and should be dealt with more seriously. Further management plans for mitigating discomforts such as noise are necessary. Conclusion: This study can be used as background data for identifying the policy priorities related to vulnerable areas polluted by industry and will contribute to improving the environmental health of residents in identified areas.

• 약학회지
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• 제49권2호
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• pp.174-179
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• 2005

The human skin is constantly exposed to environmental irritants such as ultraviolet, smoke, chemicals. Free radicals and reactive oxygen species (ROS) caused by these environmen tal facts play critical roles in cellular damage. These irritants are in themselves damaging to the skin structure but they also participate the immensely complex inflammatory reaction. The purpose of this study was to investigate the skin cell protective effect of Campsis grandiflora extract on the UVB-irradiated human dermal fibroblasts (HDFs). We tested free radical and superoxide scavenging effect in vitro. C. grandiflora extracts had potent radical scavenging effect by 82% at $100{\mu}g/ml$, respectively. For testing intracellular ROS scavenging activity the cultured HDFs were analyzed by increase in DCF fluorescence upon exposure to UVB 20 $MJ/cm^2$ after treatment of C.grandiflora extracts. The results showed that oxidation of CM-DCFDA was inhibited by C.grandiflora extracts effectively and C.grandiflora extracts has a potent free radical scavenging activity in UVB- irradiated HDFs. In ROS imaging using confocal microscope we visualized DCF fluorescence in HDFs directly. In conclusion, our results suggest that C.grandiflora can be effectively used for the prevention of UV-induced adverse skin reactions such as radical production, and skin cell damage.

• 대한화장품학회지
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• 제47권3호
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• pp.185-191
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• 2021

환경오염은 인간의 건강, 삶의 질 또는 생태계의 자연적 기능을 방해하는 물질로 지구 환경을 오염시키는 것으로 정의된다. 환경 스트레스 요인에 장기간 반복적으로 노출되면 피부의 정상적인 방어 잠재력을 초과할 때마다 피부 장벽 기능에 장애가 생겨 다양한 피부 질환이 발병하게 된다. 피부에 영향을 미치는 주요 대기오염물질은 다환 방향족 탄화수소, 휘발성 유기화합물, 질소산화물, 미세먼지, 담배 연기, 중금속, 비소 등이다. 이들 물질의 피부 흡수는 피부 표면의 대기오염물질의 침적, 표피 지질 구성, 표피를 통한 혈관 확산에 의해 이루어진다.

• ETRI Journal
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• 제41권1호
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• pp.84-92
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• 2019

Recent advances in digital holography in the far-infrared region of the spectrum have demonstrated the potential use of digital holography in homeland security as a tool to observe hostile environments in which smoke, flames, and dust impair vision. However, to make this application practical, it is necessary to simplify the optical setup. Here, we show an off-axis, self-reference scheme that spills the reference beam out from the object beam itself and avoids the need for a complex interferometric arrangement. We demonstrate that this scheme allows the reconstruction of high-quality holograms of objects captured under visible as well as far-infrared light exposure. This could pave the way to the industrialization of holographic systems to enable users to see through fire. Moreover, the quantitative nature of the holographic signal is preserved. Thus, the reported results demonstrate the possibility to use this setup for optical metrology.

• Journal of Preventive Medicine and Public Health
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• 제52권2호
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• pp.92-100
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• 2019

Objectives: Young adulthood represents a critical developmental period during which the use of tobacco may begin or cease. Furthermore, differences in smoking behaviors between younger (aged 18-24 years) and older (aged 25-34 years) young adults may exist. This study aimed to characterize patterns related to current smoking in younger and older young adults. Methods: This study used data acquired from the Sixth Korea National Health and Nutrition Examination Survey conducted from 2013 to 2014. A total of 2069 subjects were categorized as younger (712 subjects) and older (1357 subjects) young adults. The chi-square test was used to assess the relationships between smoking status and socio-demographic, health-related, and smoking-related factors. Multivariable logistic regression models were constructed to assess the factors affecting current smoking in these age groups. Results: The current smoking prevalence was 18.3% among the younger young adults and 26.0% among the older young adults. Sex, education level, occupation, perceived health status, alcohol consumption, and electronic cigarette use were related to current smoking in both age groups. Secondhand smoke exposure at home and stress levels showed significant relationships with smoking in younger and older young adults, respectively. Conclusions: Strong correlations were found between the observed variables and smoking behaviors among young adults. Determining the factors affecting smoking and designing interventions based on these factors are essential for smoking cessation in young adults.

• 대한두개안면성형외과학회지
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• 제25권2호
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• pp.51-61
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• 2024

Background: The influence of smoking on nonsyndromic clefts has been a topic of research for many years. However, few studies have investigated the effect of smoking on causing clefts in different gene pools. Methods: A meta-analysis was conducted of case-control studies related to smoking. Keywords such as "clefts," "cleft lip," "cleft palate," "orofacial cleft," and "smoking" were used to search the MEDLINE, Embase, and Cochrane databases. Results: In total, 51 articles were reviewed. The RevMan software was utilized for the analysis, and the Mantel-Haenszel method was employed to pool the odds ratios (ORs) and 95% confidence intervals. Although the overall OR, a measure of the association between exposure and outcome, was higher for smokers than for non-smokers, this association was significantly stronger in individuals from Asia and South America (1.73), and lowest in Europe (1.31). Among active and passive smokers in Asia, the OR was approximately 0.93, indicating an equivalent impact from both types of smoking. Conclusion: This analysis indirectly suggests that restriction measures targeting both active and passive smoking are crucial in Asia.

• 치위생과학회지
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• 제17권6호
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• pp.487-494
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• 2017

본 연구는 국민건강영양조사 제4기와 제5기(2007년~2012년) 자료를 이용하였으며, 구강검진 조사자료가 제공되지 않은 2011년 자료를 제외하고, 20세 이상의 성인 11,643명을 대상으로 연도별 흡연 유형별 치주질환의 추이를 살펴보고, 치주질환에 영향을 주는 인자를 평가하였다. 5개년도를 통합한 자료에서는 비흡연자에 비해 직접흡연자는 단순, 다중 로지스틱 회귀분석 모두에서 치주질환이 있을 aOR이 1.78, 1.77이었으며(p<0.001), 연도별 경향성을 보았을 때, 여자에 비해 남자가 치주질환이 있을 aOR은 1.12로 나타났다(p<0.001). 연도별 흡연 유형에 따라 치주질환 유병률은 치주질환이 있는 집단에서 직접흡연자의 비율이 현저하게 증가추세를 보였다. 또한 주요인자를 보정한 연도별 흡연 유형과 치주질환의 관련성을 단변량 분석한 결과, 비흡연자에 비해 직접흡연자의 치주질환이 있을 aOR은 2007년도에 1.99로 가장 높게 나타났다. 반면에 간접흡연자가 비흡연자에 비해 치주질환이 있을 확률은 통계적으로 유의하지 않았다. 인구사회학적 변수와 임상적 변수를 보정한 다변량 로지스틱 분석결과, 2007년도를 제외하고는 치주질환 발생에 있어 직접흡연자의 위험비는 통계적으로 모두 유의하였다. 반면 치주질환 발생에 있어 간접흡연의 영향력은 2010년도에서만 1.68의 aOR로 통계적 유의성을 보였다(p=0.032). 결론적으로 본 연구를 통해 연도에 따라 간접흡연의 노출이 증가되고 있음을 간접적으로 예측할 수 있었고, 직접흡연자에 비해 통계적 영향력의 크기는 뚜렷하지 않지만 치주질환에 있어 위험인자로서 독립적으로 고려되어야 함을 확인할 수 있었다. 중대구강병인 치주질환의 다양한 위험요인을 규명하고, 이를 예방하기 위한 측면에서 간접흡연과 치주질환의 명확한 기전과 영향력 크기를 밝히기 위한 근거자료 마련이 지속화되어야 할 것이다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권24호
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• pp.10937-10941
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• 2015

Pathogenesis of lung cancer is a complicated biological process including multiple genetic and epigenetic changes. Since cigarette smoking is confirmed as the most main risk factor of non-small cell lung cancer (NSCLC), the aim of this study was to determine whether tobacco exposure plays a role in gene methylation. Methylation of the RAR-${\beta}$ gene were detected using methylation-specific polymerase chain reaction in DNA from 167 newly diagnosed cases with NSCLC and corresponding 105 controls. A significant statistical association was found in the detection rate of the promoter methylation of RAR-${\beta}$ gene between NSCLC and controls ($x^2$=166.01; p<0.01), and hypermethylation of the RAR-${\beta}$ gene was significantly associated with smoking status (p=0.038, p<0.05). No relationship was found between RAR-${\beta}$ gene methylation and pathologic staging including clinical stage, cell type, gender and drinking (p>0.05), and the methylation of RAR-${\beta}$ gene rate of NSCLC was slightly higher in stages III+IV (80.0%) than in I+II (70.8%). Similar results were obtained for methylation of the RAR-${\beta}$ gene between squamous cell carcinoma (77.9%) and other cell type lung cancer (73.9%). These results showed that the frequency of methylation increased gradually with the development of clinical stage in smoking-associated lung cancer patients, and tobacco smoke may be play a potential role in RAR-${\beta}$ gene methylation in the early pathogenesis and process in lung cancer, particularly squamous cell carcinoma. Aberrant promoter methylation is considered to be a promising marker of previous carcinogen exposure and cancer risk.