Abstract：
:Organochlorine compounds (OCCs), such as pesticides and polychlorinated biphenyls (PCBs), are persistent lipophilic chemicals identified as endocrine disruptors, mainly with estrogen-like effects. Northeastern Argentina, near the Paraná River, is characterized by intensive farming and agricultural activities and industrial development, and is therefore prone to high incidences of environmental and dietary exposure to OCCs. Hence, we conducted a study to (1) estimate the organochlorine residues present in mammary fat tissue in a population of women from this littoral region and (2) identify potential sources of exposure to OCCs. Our subjects were 76 women (residing in and around Santa Fe city and not occupationally exposed to organochlorines) who underwent excision biopsy of a breast lesion or had plastic surgery. Both frequency of occurrence and levels of organochlorine residues were high in breast adipose tissue of all the participants. The organochlorine residues most frequently found were p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) in all the subjects analyzed, hexachlorobenzene (HCB) in 86.8%, and beta-hexachlorocyclohexane (beta-HCH) in 75.0%. The incidence of PCB congeners was very low. p,p'-DDE and beta-HCH residues reached the highest levels, 4794 and 1780 ppb, respectively. The diet was a relevant source of exposure, consumption of animal fat and freshwater fish playing a significant role. Bioaccumulation was evidenced by the significant positive association between organochlorine levels and body mass index (p = 0.0003) and the age of the patient (p = 0.0002). The frequency and levels of OCCs found in our study population raise concerns regarding Argentinean exposure to these endocrine disruptors.
journal_name
Environ Resjournal_title
Environmental researchauthors
Muñoz-de-Toro M,Beldoménico HR,García SR,Stoker C,De Jesús JJ,Beldoménico PM,Ramos JG,Luque EHdoi
10.1016/j.envres.2005.12.017subject
Has Abstractpub_date
2006-09-01 00:00:00pages
107-12issue
1eissn
0013-9351issn
1096-0953pii
S0013-9351(05)00206-9journal_volume
102pub_type
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