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Exposure to PCB and p, p'-DDE in European and Inuit populations: impact on human sperm chromatin integrity.

TitoloExposure to PCB and p, p'-DDE in European and Inuit populations: impact on human sperm chromatin integrity.
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2005
AutoriSpanò, M., Toft G, Hagmar L, Eleuteri Patrizia, Rescia M, Rignell-Hydbom A, Tyrkiel E, Zvyezday V, and Bonde J P.
Corporate AuthorsINUENDO
RivistaHum Reprod
Data di pubblicazione2005 Dec
Parole chiaveadolescent, adult, aged, chromatin, Dichlorodiphenyl Dichloroethylene, DNA fragmentation, environmental exposure, European Continental Ancestry Group, Greenland, Humans, Insecticides, Inuits, Lipids, male, Middle Aged, occupational exposure, Poland, Polychlorinated biphenyls, Spermatozoa, Sweden, Ukraine

BACKGROUND: Persistent organochlorine pollutants (POP), such as polychlorinated biphenyls (PCB) and dichlorodiphenyldichloroethylene (p, p'-DDE), are widely found in the environment and considered potential endocrine-disrupting compounds (EDC). Their impact on male fertility is still unknown.

METHODS: To explore the hypothesis that POP is associated with altered sperm chromatin integrity, a cross-sectional study involving 707 adult males (193 Inuits from Greenland, 178 Swedish fishermen, 141 men from Warsaw, Poland, and 195 men from Kharkiv, Ukraine) was carried out. Serum levels of 2,2',4,4',5,5'-hexachlorobiphenyl (CB-153), as a proxy of the total PCB burden, and of p,p'-DDE were determined. Sperm chromatin structure assay (SCSA) was used to assess sperm DNA/chromatin integrity.

RESULTS: We found a strong and monotonically increasing DNA fragmentation index with increasing serum levels of CB-153 among European but not Inuit men, reaching a 60% higher average level in the highest exposure group. No significant associations were found between SCSA-derived parameters and p, p'-DDE serum concentrations.

CONCLUSION: These results suggest that human dietary PCB exposure might have a negative impact on the sperm chromatin integrity of adult males but additional issues, including differences in the genetic background and lifestyle habits, still need to be elucidated.


cited By 97

Alternate JournalHum. Reprod.
Citation Key4918
PubMed ID16223788