Annals of Occupational and Environmental Medicine

Juha Park

3 Articles

Pregnancy, childbirth, and puerperium outcomes in female firefighters in Korea: Juha Park, Yeon-Soon Ahn, Min-Gi Kim; Ann Occup Environ Med 2020;32:e8. Published online January 31, 2020; DOI: https://doi.org/10.35371/aoem.2020.32.e8

Background

Female firefighters are exposed to hazardous environmental (chemical and physical) and working (shift work, psychological, and ergonomic factors) conditions that have reported or are suspected of adverse effects on reproductive health. However, no previous studies have reported on pregnancy, childbirth, and puerperium outcomes (PCPOs) in female firefighters.

Methods

The present study compared hospital admissions for PCPOs, based on 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD-10) codes, among Korean female firefighters with those of the general Korean population. Standardized admission ratios (SARs) and their 95% confidence intervals (CIs) were calculated.

Results

The study population included 1,766 female firefighters. Total follow-up duration was 9,659 person-years. Compared to the general female population, the female firefighters' SARs were higher in all admissions for PCPOs (SAR, 1.92; 95% CI: 1.79–2.05); pregnancy and abortive outcomes (SAR, 1.56; 95% CI: 1.12–2.12); other maternal disorders predominantly related to pregnancy (SAR, 2.65; 95% CI: 1.99–3.46); maternal care related to the fetus, amniotic cavity, and possible delivery problems (SAR, 2.13; 95% CI: 1.74–2.57); labor and delivery complications (SAR, 1.55; 95% CI: 1.15–2.06); delivery (SAR, 1.94; 95% CI: 1.80–2.08); and complications predominantly related to puerperium (SAR, 4.68; 95% CI: 2.02–9.23).

Conclusion

The results of this study showed high SARs in all and specific subcategories of PCPOs in female firefighters.

Citations

Citations to this article as recorded by

Birth defects among offspring of California firefighters, 2007–2019
Florencia Anunziata, Madison Chapman, Erin Delker, Shana Hayes, Miguel Del Campo, Rebecca J. Baer, Gretchen Bandoli
Preventive Medicine.2024; 186: 108080. CrossRef
Prevalence of Reproductive Health Issues among US Female Law Enforcement Officers
Ainslie Kehler, Sara Jahnke, Filip Kukić, Aspen E. Streetman, Katie M. Heinrich
Healthcare.2023; 11(19): 2647. CrossRef
Firefighter occupational factors and the risk of preterm birth: results from a survey of women firefighters in the USA
Alesia M Jung, Sara A Jahnke, Leslie K Dennis, Melanie L Bell, Jefferey L Burgess, Leslie V Farland
Occupational and Environmental Medicine.2023; 80(2): 77. CrossRef
Birth defects associated with paternal firefighting in the National Birth Defects Prevention Study
Miriam R. Siegel, Carissa M. Rocheleau, Brittany S. Hollerbach, Amel Omari, Sara A. Jahnke, Lynn M. Almli, Andrew F. Olshan
American Journal of Industrial Medicine.2023; 66(1): 30. CrossRef
Occupational factors and miscarriages in the US fire service: a cross-sectional analysis of women firefighters
Alesia M. Jung, Sara A. Jahnke, Leslie K. Dennis, Melanie L. Bell, Jefferey L. Burgess, Nattinee Jitnarin, Christopher M. Kaipust, Leslie V. Farland
Environmental Health.2021;[Epub] CrossRef

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Association between urinary phthalate metabolites and obesity in adult Korean population: Korean National Environmental Health Survey (KoNEHS), 2012–2014: Yangwon Kang, Juha Park, Kanwoo Youn; Ann Occup Environ Med 2019;31:e23. Published online September 9, 2019; DOI: https://doi.org/10.35371/aoem.2019.31.e23

Abstract PDF PubReader ePub

Background

Phthalate is a chemical that is commonly used as a plasticizer in processing plastic products and as a solvent in personal care products. Although previous experimental studies have reported that phthalate metabolites are associated with obesity, epidemiological study results have been inconsistent and insufficient. The objective of the present study was to investigate the association between urinary phthalate metabolites and obesity in adult Korean population.

Methods

The present study selected 4,752 Korean adults aged 19 years or older from the 2012–2014 Korean National Environmental Health Survey data. The concentrations of urinary di-(2-ethyl-5-carboxypentyl) phthalate (DEHP) metabolites—i.e., mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP) and mono-(2-ethyl-5-carboxypentyl) phthalate—mono-benzyl phthalate (MBzP) and mono-n-butyl phthalate (MnBP) were adjusted using the urinary creatinine. We used logistic regression analysis to investigate the association between urinary phthalate metabolite concentration and body mass index (BMI) with respect to sex and age.

Results

Among women, urinary MEHHP and DEHP concentrations were found to have statistically significantly positive associations with obesity (Q4 versus Q1; odds ratio (OR): 1.72, 95% confidence interval (CI): 1.19–2.49 for MEHHP and OR: 1.52, 95% CI: 1.04–2.21 for DEHP). Among men, urinary MnBP concentration was found to have statistically significantly negative association with obesity (Q4 versus Q1; OR: 0.71, 95% CI: 0.50–0.99). In the analysis stratified by sex and age, women aged ≥ 50 years showed statistically significantly positive associations between the concentrations of urinary DEHP metabolites, DEHP, MBzP, and obesity (Q4 versus Q1; OR: 1.94, 95% CI: 1.28–2.94 for MEHHP, OR: 1.88, 95% CI: 1.21–2.94 for MEOHP, OR: 2.04, 95% CI: 1.31–3.18 for DEHP, and Q3 versus Q1; OR: 1.45, 95% CI: 1.02–2.05 for MBzP). Meanwhile, men aged ≥ 50 years showed no significant associations between urinary phthalate concentrations and obesity.

Conclusions

In the present study, we found differences in the associations between urinary phthalate metabolites and BMI according to sex and age. However, because the present study was cross-sectional in nature, additional support through prospective studies is needed to estimate the causal associations.

Citations

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Gender-specific abdominal fat distribution and insulin resistance associated with organophosphate esters and phthalate metabolites exposure
Xiaoliu Shi, Wanyue Wang, Jiafan Feng, Xiaochun Ma, Mengting Xu, Cui Wang
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Phthalates’ exposure leads to an increasing concern on cardiovascular health
Melissa Mariana, Miguel Castelo-Branco, Amadeu M. Soares, Elisa Cairrao
Journal of Hazardous Materials.2023; 457: 131680. CrossRef
Association between phthalate exposure and obesity risk: A meta-analysis of observational studies
Qian Wu, Gang Li, Chen-Yang Zhao, Xiao-Lin Na, Yun-Bo Zhang
Environmental Toxicology and Pharmacology.2023; 102: 104240. CrossRef
Risk of Nonalcoholic Fatty Liver Disease Is Associated with Urinary Phthalate Metabolites Levels in Adults with Subclinical Hypothyroidism: Korean National Environmental Health Survey (KoNEHS) 2012–2014
Eun-Jung Yang, Byung-Sun Choi, Yun-Jung Yang
International Journal of Environmental Research and Public Health.2022; 19(6): 3267. CrossRef
The effects of chemical mixtures on lipid profiles in the Korean adult population: threshold and molecular mechanisms for dyslipidemia involved
Hai Duc Nguyen, Hojin Oh, Min-Sun Kim
Environmental Science and Pollution Research.2022; 29(26): 39182. CrossRef
Association of Exposure to Phthalate Metabolites With Sex Hormones, Obesity, and Metabolic Syndrome in US Women
Pallavi Dubey, Sireesha Y. Reddy, Vishwajeet Singh, Ted Shi, Mallorie Coltharp, Deborah Clegg, Alok K. Dwivedi
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Hai Duc Nguyen, Hojin Oh, Won Hee Jo, Ngoc Hong Minh Hoang, Min-Sun Kim
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Life-Time Environmental Chemical Exposure and Obesity: Review of Epidemiological Studies Using Human Biomonitoring Methods
Nayan Chandra Mohanto, Yuki Ito, Sayaka Kato, Michihiro Kamijima
Frontiers in Endocrinology.2021;[Epub] CrossRef
Relationships between di-(2-ethylhexyl) phthalate exposure and lipid metabolism in adolescents: Human data and experimental rat model analyses
Shuang Ding, Wen Qi, Qi Xu, Tianyang Zhao, Xu Li, Jianli Yin, Ruxuan Zhang, Chuanyi Huo, Liting Zhou, Lin Ye
Environmental Pollution.2021; 286: 117570. CrossRef
Association between Blood Mercury Levels and Non-Alcoholic Fatty Liver Disease in Non-Obese Populations: The Korean National Environmental Health Survey (KoNEHS) 2012–2014
Yun-Jung Yang, Eun-Jung Yang, Kyongjin Park, Subin Oh, Taehyen Kim, Yeon-Pyo Hong
International Journal of Environmental Research and Public Health.2021; 18(12): 6412. CrossRef
The association between urinary bisphenol A levels and nonalcoholic fatty liver disease in Korean adults: Korean National Environmental Health Survey (KoNEHS) 2015-2017
Sang Joon An, Eun-Jung Yang, Subin Oh, Kyong Jin Park, Taehyen Kim, Yeon-pyo Hong, Yun-Jung Yang
Environmental Health and Preventive Medicine.2021;[Epub] CrossRef
Urinary Phthalate Levels Associated with the Risk of Nonalcoholic Fatty Liver Disease in Adults: The Korean National Environmental Health Survey (KoNEHS) 2012–2014
Yun-Jung Yang, Taehyen Kim, Yeon-Pyo Hong
International Journal of Environmental Research and Public Health.2021; 18(11): 6035. CrossRef
Benzyl Butyl Phthalate Induced Early lncRNA H19 Regulation in C3H10T1/2 Stem Cell Line
Jian Zhang, Mahua Choudhury
Chemical Research in Toxicology.2021; 34(1): 54. CrossRef
Relationship between urinary phthalate metabolites and diabetes: Korean National Environmental Health Survey (KoNEHS) cycle 3 (2015–2017)
Do Jin Nam, Yeji Kim, Eun Hye Yang, Hyo Choon Lee, Jae-Hong Ryoo
Annals of Occupational and Environmental Medicine.2020;[Epub] CrossRef
Urinary bisphenol A, phthalate metabolites, and obesity: do gender and menopausal status matter?
Jung-eun Lim, BongKyoo Choi, Sun Ha Jee
Environmental Science and Pollution Research.2020; 27(27): 34300. CrossRef
Phthalate metabolites and biomarkers of oxidative stress in the follicular fluid of women undergoing in vitro fertilization
Xiao-Qiong Yuan, Yao-Yao Du, Chong Liu, Na Guo, Xue-Mei Teng, Xiang Hua, Yang-Cheng Yao, Yan-Ling Deng, Qiang Zeng, Tao-Ran Deng, Yu-Feng Li
Science of The Total Environment.2020; 738: 139834. CrossRef

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Effect of night shift work on the control of hypertension and diabetes in workers taking medication: Juha Park, Sang-Yeop Shin, Yangwon Kang, Jeongbae Rhie; Ann Occup Environ Med 2019;31:e27. Published online October 10, 2019; DOI: https://doi.org/10.35371/aoem.2019.31.e27

Abstract PDF PubReader ePub

Background

Night shift work induces physiological and psychological stress by altering sleep and biological rhythms and is associated with hypertension, diabetes, obesity, and cardiovascular diseases. Few studies have been conducted on the control of hypertension and diabetes. This study aimed to examine the effect of night shift work on the control rate of hypertension and diabetes.

Methods

Subjects comprised workers aged 20–65 years who underwent specific health examination at a single facility in seven different affiliated examination centers from 1 January to 31 December 2016. Workers were categorised into day workers and night shift workers. Demographic and medical history were taken, and physical examination was done. Blood pressure (BP) and fasting glucose were measured. The control rate of each disease was evaluated based on treatment goals presented in the treatment guidelines of the Korean Society of Hypertension and the Korean Diabetes Association (systolic BP < 140 mmHg and diastolic BP < 90 mmHg; fasting glucose ≤ 130 mg/dL).

Results

Among 631,418 subjects, 11.2% (70,450) were night shift workers. Of whom 6.1% (4,319) were taking antihypertensive medication and 2.5% (1,775) were taking diabetes medication. Among patients taking antihypertensive medications, the proportion of those whose BP was controlled to suit treatment goals was 81.7% (26,635) of day workers and 77.4% (3,343) of night shift workers, which was significantly different (p < 0.001). Among patients taking diabetes medications, the proportion of those whose blood glucose was controlled to suit treatment goals was 37.4% (4,489) of day workers and 36.5% (647) of night shift workers, but the difference was not significant. The control rates for patients taking antihypertensive medications (odds ratio [OR]: 0.74, 95% confidence interval [CI]: 0.68–0.80) were lower among night shift workers than day workers with adjustment for age, sex, smoking history, alcohol consumption, exercise, and obesity. However, there were no differences in control rates for patients taking diabetes medications (OR: 0.99, 95% CI: 0.87–1.10) between day workers and night shift workers.

Conclusions

Night shift work can have an effect on the uncontrolled BP in workers taking antihypertensive medications. Therefore, additional efforts for disease control are necessary for night shift workers with hypertension.

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