Toxicological evaluation of ammonium perfluorobutyrate in rats: Twenty-eight-day and ninety-day oral gavage studies

John L. Butenhoff, James A. Bjork, Shu Ching Chang, David J. Ehresman, George A. Parker, Kaberi Das, Christopher Lau, Paul H. Lieder, François M. van Otterdijk, Kendall B Wallace

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28 Scopus citations

Abstract

Sequential 28-day and 90-day oral toxicity studies were performed in male and female rats with ammonium perfluorobutyrate (NH 4 +PFBA) at doses up to 150 and 30mg/kg-d, respectively. Ammonium perfluorooctanoate was used as a comparator at a dose of 30mg/kg-d in the 28-day study. Female rats were unaffected by NH 4 +PFBA. Effects in males included: increased liver weight, slight to minimal hepatocellular hypertrophy; decreased serum total cholesterol; and reduced serum thyroxin with no change in serum thyrotropin. During recovery, liver weight, histological, and cholesterol effects were resolved. Results of RT-qPCR were consistent with increased transcriptional expression of the xenosensor nuclear receptors PPARα and CAR as well as the thyroid receptor, and decreased expression of Cyp1A1 (Ah receptor-regulated). No observable adverse effect levels (NOAELs) were 6 and >150mg/kg-d for male and female rats in the 28-day study and 6 and >30mg/kg-d in the 90-dat study, respectively.

Original languageEnglish (US)
Pages (from-to)513-530
Number of pages18
JournalReproductive Toxicology
Volume33
Issue number4
DOIs
StatePublished - Jul 1 2012

Keywords

  • Perfluorobutyrate (PFBA)
  • Perfluorooctanoate (PFOA)
  • Rats
  • Repeat-dose toxicity

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    Butenhoff, J. L., Bjork, J. A., Chang, S. C., Ehresman, D. J., Parker, G. A., Das, K., Lau, C., Lieder, P. H., van Otterdijk, F. M., & Wallace, K. B. (2012). Toxicological evaluation of ammonium perfluorobutyrate in rats: Twenty-eight-day and ninety-day oral gavage studies. Reproductive Toxicology, 33(4), 513-530. https://doi.org/10.1016/j.reprotox.2011.08.004