• 한국식품조리과학회지
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• 제26권6호
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• pp.804-810
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• 2010

본 연구는 건강한 남성들을 대상으로 신선한 브로콜리와 조리된 브로콜리를 섭취시킨 후, glucosinolates의 가수분해물질인 ITC가 mercapturic acid pathway를 거쳐 소변을 통해 배설되는 양을 측정하였다. 브로콜리를 섭취시키기 전 8일간은 glcusinolate가 함유되지 않는 식사(control period)를 섭취하도록 하였다. 그 이후에 조리되지 않은 신선한 브로콜리를 각각 3일간 250 g과 500 g씩 섭취시키면서 실험기간 동안 배설되는 소변을 수집하였다. 1차 실험이 종료된 후에 다시 8일 동안의 세척기간을 거친 후, 전자레인지에 가열한 브로콜리를 250 g과 500 g씩 각각 3일간 섭취시키면서 실험기간 내내 소변을 수집하였다. 수집된 소변으로부터 SF mercapturic acid의 양을 측정하여 HPLC로 분석하였다. 섭취한 브로콜리의 양과 소변으로 배설되는 mercapturic acid의 양은 직선의 상관관계를 보였다. 대조군과 비교할 때, 신선한 브로콜리를 섭취했을 때, 소변으로 배설되는 mercapturic acid의 양이 3일과 6일째 각각 3.8배와 1.9배 증가하였다. 브로콜리를 전자레인지에 익혀서 섭취시켰을 때는 소변으로 배설되는 mercapturic acid의 양이 신선한 경우와 비교하여 감소하였다. 이는 가열조리를 통해 glucosinolate의 양이 감소하였음을 의미한다. 식이로 섭취한 glucosinolate로부터 전환된 ITC가 소변으로 배설되는 생체마커를 측정하고 십자화과 채소를 통해 섭취하는 SF의 양과 소변을 통해 배설되는 양과의 상관관계가 있음을 확인하였다. 본 실험결과는 십자화과 채소 섭취의 양을 예측하는 유용한 생체마커로 활용할 수 있을 것으로 사료된다.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2004년도 춘계학술대회
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• pp.65-65
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• 2004

• 한국연초학회지
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• 제31권1호
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• pp.58-67
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• 2009

Biomarkers could be critical and useful tools for assessing the biological effects of smoking and detecting differences between potentially reduced exposure product (PREP) and conventional cigarettes. Smoking-related biomarkers can be classified into three categories as biomarkers of exposure, biomarkers of effects, and biomarkers of potential harm. When compared with the biomarkers of effects or harm, the biomarkers of exposure for chemical constituents of cigarette smoke are well established and characterized. In addition, they could offer the important information in understanding how cigarette smoke interacts with biological molecules and causes the disease to human. Therefore, we provide an overview of 6 biomarkers of exposure (Nicotine and nicotine metabolites, Carboxyhaemoglobin, NNAL (4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanol) and NNAL - glucuronide, 3-Hydroxypropyl-mercapturic acid, and Monohydroxy-butenyl-mercapturic acids, and Urine mutagenicity) which were validated through extensive research and clinical experience. These reliable biomarkers could help identify the efficacy of PREP by predicting early toxicological effects and lead to improve it.

• 한국환경보건학회지
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• 제50권1호
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• pp.25-35
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• 2024

Background: There are concerns about the health effects of various environmental pollution exposures among residents living near coal-fired power plants (CFPP). Objectives: This study attempted to compare the concentrations of heavy metals in blood and urine and those of urinary volatile organic compound (VOC) metabolites according to the residential separation distance. Methods: Participants in the study totaled 334 people who have lived for more than 10 years in areas within 10 km of a CFPP. The separation distance was analyzed in quartiles by dividing it into Q1 (88 people), Q2 (89 people), Q3 (89 people), and Q4 (68 people). We explained the purpose of this study to the participants and collected blood and urine after obtaining signatures on a participation agreement. Results: The study participants were 102 males (30.5%) and 232 females (69.5%), with an average age of 71. The average length of residence and distance were 43.8 years and 4,800 meters. The geometric mean concentrations of Pb, Cd, and Hg in blood and As and Cd in urine were respective 1.35 ㎍/dL, 1.43 ㎍/L, 3.16 ㎍/L. They were 167.88 ㎍/g for creatinine and 1.58 ㎍/g creatinine. The metabolite concentrations of VOCs were 50.67 ㎍/g creatinine in t, t-muconic acid (t, t-MA), 10.73 ㎍/g creatinine in benzyl mercapturic acid, 317.05 ㎍/g creatinine in phenylglyoxylic acid, 123.55 ㎍/g creatinine in methylhippuric acid, and 190.82 ㎍/g creatinine in mandelic acid. The concentration of Pb in the blood and Cd and t, t-MA in the urine of residents within affected area of the CFPP showed statistically significant differences among distance groups. Conclusions: The concentration of urinary VOCs metabolites, especially t, t-MA, differed according to the distance groups of residents within the affected area of CFPP (p<0.05).

• 한국산업보건학회지
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• 제6권2호
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• pp.272-280
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• 1996

This study was to evaluate the associations between urinary S-Phenyl-mercapturic acid(S-PMA) as a new indicator of biological monitoring for low level of exposure to benzene and independent variables such as the air concentration of benzene in the breathing zone of workers, the years of work, and smoking. In this study the subjects were the total of 145 drawn from 53 workers who were occupationally exposed to benzene and 92 workers who were not. The results were as follows: 1. In the workplace geometric mean concentration of benzene in the breathing zone of workers was 0.31 ppm(0.02 - 3.26 ppm) for the spraying workers and 0.25 ppm(0.02 - 3.95 ppm) for the printing workers. 2. The geometric mean of uninary S-PMA for non exposed group was $8.9{\mu}g/g$ creatinine($0.6-72.3{\mu}g/g$ creatinine), 80.3% (74 workers) of the total non-exposed workers indicated less than $20{\mu}g/g$ creatinine of uninary S-PMA. The difference of uninary S-PMA by sex, age, smoking was not significant. 3. The geometric mean of urinary S-PMA for workers who were exposed to benzene was $37.2{\mu}g/g$ creatinine, and was four times higher than that of workers who were not exposed. And 79.3% (42 workers) of the total exposed workers indicated more than $20{\mu}g/g$ creatinine of urinary S-PMA. 4. Regarding the level of benzene in the air, urinary S-PMA was the highest level of $147.9{\mu}g/g$ creatinine in the workers who were exposed to air concentration of 0.5 ppm of benzene and was higher as the level in the air was increased. 5. The correlation coefficient between log urinary S-PMA and log benzene concentration in the breathing zone was 0.80, and the following linear equation was found between urinary log S-PMA and log benzene concentration in the breathing zone : log S-PMA(${\mu}g/g$ creatinine) = 0.564 log benzene in air(ppm) + 0.192 (n=53, r=0.80, p=0.000) In conclusion, the concentration of S-PMA in urine proved to be good parameter for biological monitoring benzene exposure at the workplace even at low level of benzene in air.