Transplacental transfer of acrylamide and glycidamide are comparable to that of antipyrine in perfused human placenta.

2.50
Hdl Handle:
http://hdl.handle.net/10146/76194
Title:
Transplacental transfer of acrylamide and glycidamide are comparable to that of antipyrine in perfused human placenta.
Authors:
Annola, Kirsi; Karttunen, Vesa; Keski-Rahkonen, Pekka; Myllynen, Paivi; Segerback, Dan; Heinonen, Seppo; Vahakangas, Kirsi
Abstract:
Most drugs can penetrate the placenta but there are only a few studies on placental transfer of environmental toxic compounds. In this study, we used dual recirculating human placental perfusion to determine the transfer rate through the placenta of a neurotoxic and carcinogenic compound found in food, acrylamide and its genotoxic metabolite glycidamide. Putative acrylamide metabolism into glycidamide during the 4-h perfusions and acrylamide-derived DNA adducts in placental DNA after perfusions were also analyzed. Placentas were collected immediately after delivery and kept physiologically functional as confirmed by antipyrine kinetics, glucose consumption and leak from fetal to maternal circulation. Acrylamide (5 or 10 microg/ml) or glycidamide (5 microg/ml), both with antipyrine (100 microg/ml), was added to maternal circulation. Acrylamide and glycidamide were analyzed in the perfusion medium by liquid chromatography/mass spectrometry. Acrylamide and glycidamide crossed the placenta from maternal to fetal circulation with similar kinetics to antipyrine, suggesting fetal exposure if the mother is exposed. The concentrations in maternal and fetal circulations equilibrated within 2h for both studied compounds and with both concentrations. Acrylamide metabolism into glycidamide was not detected during the 4-h perfusions. Moreover, DNA adducts were undetectable in the placentas after perfusions. However, fetuses may be exposed to glycidamide after maternal metabolism. Although not found in placental tissue after 4h of perfusion, it is possible that glycidamide adducts are formed in fetal DNA.
Citation:
Toxicol. Lett. 2008, 182 (1-3):50-56
Journal:
Toxicology Letters
Issue Date:
10-Nov-2008
URI:
http://hdl.handle.net/10146/76194
DOI:
10.1016/j.toxlet.2008.08.006
PubMed ID:
18790027
Additional Links:
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TCR-4T8SM19-2&_user=1843694&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000055040&_version=1&_urlVersion=0&_userid=1843694&md5=3379811d03536a37e92083d98209fdc3
Type:
Article
Language:
en
ISSN:
0378-4274
Sponsors:
Finally, we appreciate the collaboration with all members in Dan Segerbäck’s group, partner of the Network of Excellence ECNIS. This project was financially supported by EU networks NewGeneris (FOOD-CT-2005 016320) and ReProTect (LSHB-CT-2004-503257).
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorAnnola, Kirsi-
dc.contributor.authorKarttunen, Vesa-
dc.contributor.authorKeski-Rahkonen, Pekka-
dc.contributor.authorMyllynen, Paivi-
dc.contributor.authorSegerback, Dan-
dc.contributor.authorHeinonen, Seppo-
dc.contributor.authorVahakangas, Kirsi-
dc.date.accessioned2009-08-04T07:53:44Z-
dc.date.available2009-08-04T07:53:44Z-
dc.date.issued2008-11-10-
dc.identifier.citationToxicol. Lett. 2008, 182 (1-3):50-56en
dc.identifier.issn0378-4274-
dc.identifier.pmid18790027-
dc.identifier.doi10.1016/j.toxlet.2008.08.006-
dc.identifier.urihttp://hdl.handle.net/10146/76194-
dc.description.abstractMost drugs can penetrate the placenta but there are only a few studies on placental transfer of environmental toxic compounds. In this study, we used dual recirculating human placental perfusion to determine the transfer rate through the placenta of a neurotoxic and carcinogenic compound found in food, acrylamide and its genotoxic metabolite glycidamide. Putative acrylamide metabolism into glycidamide during the 4-h perfusions and acrylamide-derived DNA adducts in placental DNA after perfusions were also analyzed. Placentas were collected immediately after delivery and kept physiologically functional as confirmed by antipyrine kinetics, glucose consumption and leak from fetal to maternal circulation. Acrylamide (5 or 10 microg/ml) or glycidamide (5 microg/ml), both with antipyrine (100 microg/ml), was added to maternal circulation. Acrylamide and glycidamide were analyzed in the perfusion medium by liquid chromatography/mass spectrometry. Acrylamide and glycidamide crossed the placenta from maternal to fetal circulation with similar kinetics to antipyrine, suggesting fetal exposure if the mother is exposed. The concentrations in maternal and fetal circulations equilibrated within 2h for both studied compounds and with both concentrations. Acrylamide metabolism into glycidamide was not detected during the 4-h perfusions. Moreover, DNA adducts were undetectable in the placentas after perfusions. However, fetuses may be exposed to glycidamide after maternal metabolism. Although not found in placental tissue after 4h of perfusion, it is possible that glycidamide adducts are formed in fetal DNA.en
dc.description.sponsorshipFinally, we appreciate the collaboration with all members in Dan Segerbäck’s group, partner of the Network of Excellence ECNIS. This project was financially supported by EU networks NewGeneris (FOOD-CT-2005 016320) and ReProTect (LSHB-CT-2004-503257).en
dc.language.isoenen
dc.relation.urlhttp://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TCR-4T8SM19-2&_user=1843694&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000055040&_version=1&_urlVersion=0&_userid=1843694&md5=3379811d03536a37e92083d98209fdc3en
dc.subjectFetal exposureen
dc.subjectDNA adductsen
dc.subjectXenobiotic metabolismen
dc.subjectFood carcinogensen
dc.subject.meshAcrylamides-
dc.subject.meshAdult-
dc.subject.meshAntipyrine-
dc.subject.meshChromatography, High Pressure Liquid-
dc.subject.meshDNA-
dc.subject.meshEpoxy Compounds-
dc.subject.meshFemale-
dc.subject.meshFetus-
dc.subject.meshHumans-
dc.subject.meshMass Spectrometry-
dc.subject.meshMaternal-Fetal Exchange-
dc.subject.meshMolecular Weight-
dc.subject.meshPerfusion-
dc.subject.meshPlacenta-
dc.subject.meshPregnancy-
dc.subject.meshSolubility-
dc.subject.meshSpectrophotometry, Ultraviolet-
dc.titleTransplacental transfer of acrylamide and glycidamide are comparable to that of antipyrine in perfused human placenta.en
dc.typeArticleen
dc.identifier.journalToxicology Lettersen

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