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Interindividual dif...
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cantillana, T.Stockholms universitet,Institutionen för miljökemi
(författare)
Interindividual differences in o,p'-DDD enantiomer kinetics examined in Göttingen minipigs
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LIBRIS-ID:oai:DiVA.org:su-26971
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-26971URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:pop swepub-contenttype
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Ämneskategori:ovr swepub-publicationtype
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Five minipigs were given a single oral dose of a racemic mixture of o,p’-DDD (30 mg kg-1 b.w., EF = 0.49). Blood plasma and subcutaneous adipose tissue were collected for analysis, at different time-points over 180 d. At the end of the experiment also liver, kidney and brain tissue were collected. Low concentrations of o,p’-DDD still remained after 180 d in plasma (mean 0.5 ±0.3 ng g-1 f.w.) and in adipose tissue (mean 40 ±40 ng g-1 f..w.). The mean concentrations in liver and kidney were 500 ±300 pg g-1 f.w. and 90 ±50 pg g-1 f.w. respectively. The enantiomers of o,p’-DDD were isolated by HPLC and the absolute configuration of the enantiomers were determined by X-ray crystallography and polarimetry as R-(+)-o,p’-DDD and S-(-)-o,p’-DDD. The enantiomer fractions (EFs) of o,p’-DDD were determined in plasma, adipose tissue and kidney using GC/ECD equipped with a chiral column. The EFs of o,p’-DDD in the individual minipigs showed large variability, ranging from 0.2-0.6 after 24 h in plasma and from 0.2-0.7 after 90 d in adipose tissue. Hence in two of the minipigs, the S-(-)-o,p’-DDD enantiomer was dominating while the other enantiomer, R-(+)-o,p’-DDD was dominating in three minipigs. We propose that a yet not identified factor related to polymorphism, regulating the metabolism and/or elimination of the enantiomeric o,p´-DDD, is responsible for the differences in enantiomeric retention of the compound in the minipigs.
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Lindström, V.Department of Environmental Toxicology, Uppsala University
(författare)
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Eriksson, L.Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi,Division of Structural Chemistry
(författare)
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Brandt, I.Department of Environmental Toxicology, Uppsala University
(författare)
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Bergman, Å.Stockholms universitet,Institutionen för miljökemi
(författare)
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Stockholms universitetInstitutionen för miljökemi
(creator_code:org_t)
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