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Abstract Title:

Organochlorine pesticide gradient levels among maternal adipose tissue, maternal blood serum and umbilical blood serum.

Abstract Source:

Bull Environ Contam Toxicol. 2011 Mar ;86(3):289-93. Epub 2011 Feb 3. PMID: 21290101

Abstract Author(s):

Margarita Herrero-Mercado, S M Waliszewski, M Caba, C Martínez-Valenzuela, S Gómez Arroyo, R Villalobos Pietrini, P C Cantú Martínez, F Hernández-Chalate

Article Affiliation:

Biomedical Sciences Doctor Study, University of Veracruz, Xalapa, Mexico.

Abstract:

The objective of the present study was to determine levels and calculate ratios of copartition coefficients among organochlorine pesticidesβ-HCH, pp'DDE, op'DDT and pp'DDT in maternal adipose tissue, maternal blood serum and umbilical blood serum of mother-infant pairs from Veracruz, Mexico. Organochlorine pesticides were analyzed in 70 binomials: maternal adipose tissue, maternal serum and umbilical cord serum samples, using gas chromatography with electron capture detection (GC-ECD). The results were expressed as mg/kg on fat basis. p,p'-DDE was the major organochlorine component, detected in every maternal adipose tissue (0.770 mg/kg), maternal serum sample (5.8 mg/kg on fat basis) and umbilical cord blood sample (6.9 mg/kg on fat basis). p,p'-DDT was detected at 0.101 mg/kg, 2.2 mg/kg and 5.9 mg/kg respectively, according to the order given above. β-HCH was detected at 0.027 mg/kg, 4.2 mg/kg and 28.0 mg/kg respectively. op'DDT was detected only in maternal adipose tissue at 0.011 mg/kg. The copartition coefficients among samples identify significant increases in concentrations from adipose tissue to maternal blood serum and to umbilical blood serum. The increase indicated that maternal adipose tissue released organochlorine pesticides to blood serum and that they are carried over to umbilical cord blood.

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Sayer Ji
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