Urinary arsenic methylation and porphyrin profile of C57Bl/6J mice chronically exposed to sodium arsenate

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

6 Scopus Citations
View graph of relations

Author(s)

  • Manonmanii Krishnamohan
  • Hui-Jie Wu
  • Shu-Huei Huang
  • Robyn Maddelena
  • Paul K.S. Lam
  • And 2 others
  • Michael R. Moore
  • Jack C. Ng

Detail(s)

Original languageEnglish
Pages (from-to)235-243
Journal / PublicationScience of the Total Environment
Volume379
Issue number2-3
Publication statusPublished - 1 Jul 2007

Abstract

Arsenic interferes with the function of enzymes responsible for haem biosynthesis leading to alteration in the porphyrin profile. In this study, young female C57Bl/6J mice were given drinking water containing 0, 100, 250 and 500 μg AsV/L as sodium arsenate ad libitum for 24 months. 24 h pooled urine samples were collected bimonthly for urinary arsenic methylation and porphyrin analyses by HPLC-ICP-MS and HPLC respectively. The levels of total arsenic were significantly dose related except for the 2nd month interval. No significant differences in the urinary arsenic methylation pattern between control and test groups were observed. Coproporphyrin I (Copro I) showed a significant dose-response relationship after 12, 14 and 20 months of exposure. Significant differences in the levels of coproporphyrin III (Copro III) were observed in the 8th month in 250 and 500 μg/L treatment groups and the dose-response pattern was maintained after 10 and 12 months. Our results suggest that urinary arsenic is a useful biomarker for internal dose, and that urinary coproporphyrin can be used as an early warning biomarker of effects before the onset of cancer. Crown Copyright © 2006.

Research Area(s)

  • Arsenic, Biomarker, Chronic exposure, Methylation, Mice, Porphyrin

Citation Format(s)

Urinary arsenic methylation and porphyrin profile of C57Bl/6J mice chronically exposed to sodium arsenate. / Krishnamohan, Manonmanii; Wu, Hui-Jie; Huang, Shu-Huei; Maddelena, Robyn; Lam, Paul K.S.; Moore, Michael R.; Ng, Jack C.

In: Science of the Total Environment, Vol. 379, No. 2-3, 01.07.2007, p. 235-243.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review