Cargando…

Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation

BACKGROUND: Perfluorooctanoic acid (PFOA) is an environmental contaminant associated with adverse metabolic outcomes in developmentally exposed human populations and mouse models. Hexafluoropropylene oxide-dimer acid (HFPO-DA, commonly called GenX) has replaced PFOA in many industrial applications i...

Descripción completa

Detalles Bibliográficos
Autores principales: Cope, Harlie A., Blake, Bevin E., Love, Charlotte, McCord, James, Elmore, Susan A., Harvey, Janice B., Chappell, Vesna A., Fenton, Suzanne E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8794304/
https://www.ncbi.nlm.nih.gov/pubmed/35097227
http://dx.doi.org/10.1016/j.emcon.2021.10.004
_version_ 1784640798151671808
author Cope, Harlie A.
Blake, Bevin E.
Love, Charlotte
McCord, James
Elmore, Susan A.
Harvey, Janice B.
Chappell, Vesna A.
Fenton, Suzanne E.
author_facet Cope, Harlie A.
Blake, Bevin E.
Love, Charlotte
McCord, James
Elmore, Susan A.
Harvey, Janice B.
Chappell, Vesna A.
Fenton, Suzanne E.
author_sort Cope, Harlie A.
collection PubMed
description BACKGROUND: Perfluorooctanoic acid (PFOA) is an environmental contaminant associated with adverse metabolic outcomes in developmentally exposed human populations and mouse models. Hexafluoropropylene oxide-dimer acid (HFPO-DA, commonly called GenX) has replaced PFOA in many industrial applications in the U.S. and Europe and has been measured in global water systems from <1 to 9350 ng/L HFPO-DA. Health effects data for GenX are lacking. OBJECTIVE: Determine the effects of gestational exposure to GenX on offspring weight gain trajectory, adult metabolic health, liver pathology and key adipose gene pathways in male and female CD-1 mice. METHODS: Daily oral doses of GenX (0.2, 1.0, 2.0 mg/kg), PFOA (0.1, 1.0 mg/kg), or vehicle control were administered to pregnant mice (gestation days 1.5–17.5). Offspring were fed a high- or low-fat diet (HFD or LFD) at weaning until necropsy at 6 or 18 weeks, and metabolic endpoints were measured over time. PFOA and GenX serum and urine concentrations, weight gain, serum lipid parameters, body mass composition, glucose tolerance, white adipose tissue gene expression, and liver histopathology were evaluated. RESULTS: Prenatal exposure to GenX led to its accumulation in the serum and urine of 5-day old pups (P = 0.007, P < 0.001), which was undetectable by weaning. By 18 weeks of age, male mice fed LFD in the 2.0 mg/kg GenX group displayed increased weight gain (P < 0.05), fat mass (P = 0.016), hepatocellular microvesicular fatty change (P = 0.015), and insulin sensitivity (P = 0.014) in comparison to control males fed LFD. Female mice fed HFD had a significant increase in hepatocyte single cell necrosis in 1.0 mg/kg GenX group (P = 0.022) and 1.0 mg/kg PFOA group (P = 0.003) compared to control HFD females. Both sexes were affected by gestational GenX exposure; however, the observed phenotype varied between sex with males displaying more characteristics of metabolic disease and females exhibiting liver damage in response to the gestational exposure. CONCLUSIONS: Prenatal exposure to 1 mg/kg GenX and 1 mg/kg PFOA induces adverse metabolic outcomes in adult mice that are diet- and sex-dependent. GenX also accumulated in pup serum, suggesting that placental and potentially lactational transfer are important exposure routes for GenX.
format Online
Article
Text
id pubmed-8794304
institution National Center for Biotechnology Information
language English
publishDate 2021
record_format MEDLINE/PubMed
spelling pubmed-87943042022-01-27 Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation Cope, Harlie A. Blake, Bevin E. Love, Charlotte McCord, James Elmore, Susan A. Harvey, Janice B. Chappell, Vesna A. Fenton, Suzanne E. Emerg Contam Article BACKGROUND: Perfluorooctanoic acid (PFOA) is an environmental contaminant associated with adverse metabolic outcomes in developmentally exposed human populations and mouse models. Hexafluoropropylene oxide-dimer acid (HFPO-DA, commonly called GenX) has replaced PFOA in many industrial applications in the U.S. and Europe and has been measured in global water systems from <1 to 9350 ng/L HFPO-DA. Health effects data for GenX are lacking. OBJECTIVE: Determine the effects of gestational exposure to GenX on offspring weight gain trajectory, adult metabolic health, liver pathology and key adipose gene pathways in male and female CD-1 mice. METHODS: Daily oral doses of GenX (0.2, 1.0, 2.0 mg/kg), PFOA (0.1, 1.0 mg/kg), or vehicle control were administered to pregnant mice (gestation days 1.5–17.5). Offspring were fed a high- or low-fat diet (HFD or LFD) at weaning until necropsy at 6 or 18 weeks, and metabolic endpoints were measured over time. PFOA and GenX serum and urine concentrations, weight gain, serum lipid parameters, body mass composition, glucose tolerance, white adipose tissue gene expression, and liver histopathology were evaluated. RESULTS: Prenatal exposure to GenX led to its accumulation in the serum and urine of 5-day old pups (P = 0.007, P < 0.001), which was undetectable by weaning. By 18 weeks of age, male mice fed LFD in the 2.0 mg/kg GenX group displayed increased weight gain (P < 0.05), fat mass (P = 0.016), hepatocellular microvesicular fatty change (P = 0.015), and insulin sensitivity (P = 0.014) in comparison to control males fed LFD. Female mice fed HFD had a significant increase in hepatocyte single cell necrosis in 1.0 mg/kg GenX group (P = 0.022) and 1.0 mg/kg PFOA group (P = 0.003) compared to control HFD females. Both sexes were affected by gestational GenX exposure; however, the observed phenotype varied between sex with males displaying more characteristics of metabolic disease and females exhibiting liver damage in response to the gestational exposure. CONCLUSIONS: Prenatal exposure to 1 mg/kg GenX and 1 mg/kg PFOA induces adverse metabolic outcomes in adult mice that are diet- and sex-dependent. GenX also accumulated in pup serum, suggesting that placental and potentially lactational transfer are important exposure routes for GenX. 2021 2021-10-31 /pmc/articles/PMC8794304/ /pubmed/35097227 http://dx.doi.org/10.1016/j.emcon.2021.10.004 Text en https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) ).
spellingShingle Article
Cope, Harlie A.
Blake, Bevin E.
Love, Charlotte
McCord, James
Elmore, Susan A.
Harvey, Janice B.
Chappell, Vesna A.
Fenton, Suzanne E.
Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation
title Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation
title_full Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation
title_fullStr Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation
title_full_unstemmed Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation
title_short Latent, sex-specific metabolic health effects in CD-1 mouse offspring exposed to PFOA or HFPO-DA (GenX) during gestation
title_sort latent, sex-specific metabolic health effects in cd-1 mouse offspring exposed to pfoa or hfpo-da (genx) during gestation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8794304/
https://www.ncbi.nlm.nih.gov/pubmed/35097227
http://dx.doi.org/10.1016/j.emcon.2021.10.004
work_keys_str_mv AT copeharliea latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation
AT blakebevine latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation
AT lovecharlotte latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation
AT mccordjames latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation
AT elmoresusana latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation
AT harveyjaniceb latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation
AT chappellvesnaa latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation
AT fentonsuzannee latentsexspecificmetabolichealtheffectsincd1mouseoffspringexposedtopfoaorhfpodagenxduringgestation