Dataset Information

A biomonitoring study on blood levels of beta-hexachlorocyclohexane among people living close to an industrial area.

ABSTRACT:

Background

A chemical plant manufacturing pesticides has been operating since the 1950's in the Sacco River Valley (Central Italy). In 2005, high beta-hexachlorocyclohexane (Beta-HCH) concentrations were found in milk of cows raised and fed near the river. We report the results of a biomonitoring study conducted in this region to evaluate the body burden of Beta-HCH and to identify the determinants of the human contamination.

Methods

We defined four residential areas by their distance from the chemical plant and the river, and selected a stratified random sample of 626 people aged 25-64 years. We evaluated the association, in terms of the geometric mean ratio (GMR), between several potential determinants and Beta-HCH serum concentrations using multivariate linear regression analysis.

Results

Two hundred forty-six serum samples were analysed to assess Beta-HCH levels (mean concentration: 99 ng/g lipid; Standard Deviation: 121; Geometric Mean: 60.6; Geometric Standard Deviation: 2.65). We found a strong association between Beta-HCH and living in the area close to the river (GMR: 2.00; 95%CI: 1.36-2.94). Beta-HCH levels were also associated with age, level of education, use of private wells and consumption of local food.

Conclusions

The results suggest that people living close to the river may have been contaminated by Beta-HCH, most likely through water from private wells and privately grown food. A programme of epidemiological and clinical surveillance is on-going on this population.

SUBMITTER: Porta D

PROVIDER: S-EPMC3729409 | biostudies-literature | 2013 Jul

REPOSITORIES: biostudies-literature

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Publications

A biomonitoring study on blood levels of beta-hexachlorocyclohexane among people living close to an industrial area.

Porta Daniela D Fantini Fiorella F De Felip Elena E Blasetti Francesco F Abballe Annalisa A Dell'Orco Valerio V Fano Valeria V Ingelido Anna Maria AM Narduzzi Silvia S Forastiere Francesco F

Environmental health : a global access science source 20130716

<h4>Background</h4>A chemical plant manufacturing pesticides has been operating since the 1950's in the Sacco River Valley (Central Italy). In 2005, high beta-hexachlorocyclohexane (Beta-HCH) concentrations were found in milk of cows raised and fed near the river. We report the results of a biomonitoring study conducted in this region to evaluate the body burden of Beta-HCH and to identify the determinants of the human contamination.<h4>Methods</h4>We defined four residential areas by their dist ...[more]

PMID: 23866943

Similar Datasets

Project description:BACKGROUND:Hexachlorocyclohexane is a synthetic chemical with several isomers, including ?-Hexachlorocyclohexane (?-HCH). In 2005, a large contamination of crude milk from some bovine farms along the Sacco River (Central Italy) was detected; it was related to the illegal disposal of large quantities of processing waste by a chemical industry of the area. A biomonitoring study, conducted in 2007 on a sample of the residing population, found high values of ?-HCH in people living close to the river. These results led to the establishment of a clinical and epidemiological surveillance program on all the exposed population. The aim of the study was to evaluate the determinants of ?-HCH blood levels in people living within 1 Km of the Sacco River, focusing on the role of specific foods, body mass index and risk factors not yet identified. METHODS:The program involved all people living within 1?km of the river. A descriptive analysis of ?-HCH blood levels was done in relation to the potential determinants including specific foods. Regression analysis was used to study the association between potential determinants and (natural log) ?-HCH haematic concentration. The results were expressed as geometric mean ratios (GMR). To take into account similarities within the families we adjusted for family clustering. RESULTS:A total of 602 subjects (87.2%) agreed to participate in the surveillance. The ?-HCH geometric mean serum concentration was 72?ng/g lipid. The regression analysis showed that being female (GMR: 1.32, 95%CI: 1.14-1.53), elderly (GMR> 70yy: 10.04, 95%CI: 6.65-15.15), obese (GMR: 1.63, 95%CI: 1.28-2.08), eating food of local/own production (GMR 1.47, 95%CI: 1.15-1.88) and using water from private wells (GMRdrink:1.47, 95%CI: 1.00-2.14 and GMRwash: 1.48, 95%CI: 1.17-1.87) were associated with higher ?-HCH values. There was inverse association with breastfeeding (GMR: 0.64, 95%CI: 0.47-0.86). The focus on specific foods showed that the most important factors were eggs and beef. CONCLUSIONS:The study indicated a greater contamination for older people, and those drinking and washing with water from private wells and consuming locally produced food, especially eggs and beef.

Dataset Information

A biomonitoring study on blood levels of beta-hexachlorocyclohexane among people living close to an industrial area.

Background

Methods

Results

Conclusions

Publications

A biomonitoring study on blood levels of beta-hexachlorocyclohexane among people living close to an industrial area.

Similar Datasets

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