scholarly journals O6D.5 Electronic waste recycling exposure and hormone levels in workers

2019 ◽  
Vol 76 (Suppl 1) ◽  
pp. A58.2-A59
Author(s):  
Sabrina Gravel ◽  
Bouchra Bakhiyi ◽  
Jérôme Lavoué ◽  
Marc-André Verner ◽  
Joseph Zayed ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Smoking Status ◽  
Electronic Waste ◽  
Geometric Mean ◽  
Waste Recycling ◽  
Control Group ◽  
Total Testosterone ◽  
High Exposure ◽  
Hormone Levels ◽  
Electronic Waste Recycling

Background and objectiveElectronic waste recycling (e-recycling) exposes workers to several contaminants, including flame retardants that are suspected endocrine disruptors. We aimed to explore the association between polybrominated diphenyl ethers (PBDEs) and hormone levels in the serum of Canadian e-recycling workers.MethodsIn a cross-sectional study, blood samples were collected from 85 e-recycling workers (six facilities) and from 15 workers in other types of recycling (two facilities), at the end of a work shift. Socio-demographic information was obtained by questionnaire and body mass index (BMI) was calculated from measured height and weight. Serum concentrations of 13 PBDE congeners were measured as well as thyroid hormones (free and total thyroxine [T4], triiodothyronine [T3], thyroid stimulating hormone [TSH]) and testosterone (free and total). Linear regressions were stratified on sex and adjusted for age, BMI, seniority, smoking status, and type of recycling. Ten participants were excluded because of thyroid or testicular problems.ResultsParticipants were 23 women and 77 men (mean 40 years old, SD=12 years). Average hormone levels were within the laboratory normal range. In e-recycling, geometric mean concentrations of the most detected congeners were 11, 11 and 20 ng/g lipids for BDE47, BDE153 and BDE209, respectively. Only BDE209 concentrations were higher in e-recycling than in the control group. A two-fold increase in serum BDE209 was associated with a significant increase of 2.48 nmol/L in total T4 in men (p=0.011), and with a close to significant increase in the free/total testosterone ratio of 6% in men (p=0.053). BDE47 and BDE153 were not associated with hormone levels.ConclusionsThe clinical significance of high exposure to BDE209 in working adults is yet to be established, but endocrine effects were observed in this population. E-recycling workers are highly exposed to PBDEs among other substances, which may make them more vulnerable to hormonal disruption.

scholarly journals Hydrophobic Organic Pollutants in Soils and Dusts at Electronic Waste Recycling Sites: Occurrence and Possible Impacts of Polybrominated Diphenyl Ethers

2019 ◽  
Vol 16 (3) ◽  
pp. 360 ◽  
Author(s):  
Chimere Ohajinwa ◽  
Peter Van Bodegom ◽  
Qing Xie ◽  
Jingwen Chen ◽  
Martina Vijver ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Polybrominated Diphenyl Ethers ◽  
Flame Retardants ◽  
Electronic Waste ◽  
Waste Recycling ◽  
Hazardous Substances ◽  
Diphenyl Ethers ◽  
Negative Impacts ◽  
Electronic Waste Recycling ◽  
Hydrophobic Organic Pollutants

Concerns about the adverse consequences of informal electronic waste (e-waste) recycling is increasing, because e-waste contains some hazardous substances such as polybrominated diphenyl ethers (PBDEs) which is used as flame retardants in electronics. There is dearth of information on the concentrations of PBDEs and the pattern of distribution at the various e-waste recycling sites in Nigeria. This study therefore measured the concentrations of 13 PBDE congeners, in top soils (0–10 cm) and in various dust samples from different e-waste recycling sites (burning, dismantling, repair). PBDE concentrations at e-waste sites were compared with the concentrations in samples from corresponding control sites in three study locations in Nigeria (Lagos, Ibadan, and Aba). There were significant differences in the level of PBDEs congeners between each of the e-waste recycling sites and the corresponding control sites. The levels of PBDEs at the e-waste recycling sites exceeded the levels at the controls sites by a factor of 100 s to 1000 s. In general, PBDE concentrations at the e-waste sites decreased with the intensity of the e-waste recycling activities: burning sites > dismantling sites > repair sites > control sites. Our results suggest that the informal e-waste recycling has negative impacts on the enviroment and human health.

Determination of polybrominated diphenyl ethers in soil and sediment from an electronic waste recycling facility

Chemosphere ◽  
2005 ◽  
Vol 60 (6) ◽  
pp. 810-816 ◽  
Author(s):  
Dongli Wang ◽  
Zongwei Cai ◽  
Guibin Jiang ◽  
Anna Leung ◽  
Ming H. Wong ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Electronic Waste ◽  
Waste Recycling ◽  
Diphenyl Ethers ◽  
Electronic Waste Recycling ◽  
Soil And Sediment

scholarly journals Research on the Hormonal Etiology of Marked and Extreme Seborrheic Dermatitis in Postmenopausal Women: A Case-Control Study

2020 ◽  
Author(s):  
Melis Gönülal
Keyword(s):  
Postmenopausal Women ◽  
Smoking Status ◽  
Seborrheic Dermatitis ◽  
Dehydroepiandrosterone Sulfate ◽  
Control Group ◽  
Total Testosterone ◽  
Hormone Levels ◽  
Dermatology Clinic ◽  
Postmenopausal Period ◽  
Age Appropriate

INTRODUCTION: Seborrheic dermatitis is a superficial, inflammatory, chronic and recurrent skin disease that manifests itself with yellowish, oily scales on erythematous ground. There are many factors in etiology. In this study, it was aimed to investigate the role of hormones in the etiology of marked and extreme seborrheic dermatitis in postmenopausal women. METHODS: Postmenopausal women with marked and extreme seborrheic dermatitis who applied to outpatient dermatology clinic of İzmir Tepecik Training and Research Hospital were included to the study. Age, weight, body mass index, smoking status, blood total testosterone, dehydroepiandrosterone sulfate, progesterone, follicle stimulating hormone, luteinizing hormone levels of patients were recorded. The data were compared with the age-appropriate control group. RESULTS: Smoking and dehydroepiandrosterone sulfate hormone levels were found significant effective in the formation of marked and extreme seborrheic dermatitis in the postmenopausal period (p = 0.014, p = 0.003 respectively). There weren’t any significant relationships between other parameters and marked/extreme seborrheic dermatitis. DISCUSSION AND CONCLUSION: Dehydroepiandrosterone sulfate hormone levels may be a guide in the management of patients in postmenopausal period with marked and extreme seborrheic dermatitis. In addition, smoking affects the prognosis of seborrheic dermatitis in this group of patients negatively.

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