HPLC measurement of harderoporphyrin in the harderian glands of rodents as a biomarker for sub-lethal or chronic arsenic exposure.
An improved HPLC method has been established for the measurement of harderoporphyrin (HP) in the harderian gland of rats and mice. Groups of female Wistar rats were given a single oral dose of sodium arsenite at 0, 0.5 or 5.0 mg As(III)/kg body weight, or a slurry of arsenic-contaminated soil at equivalent dose rates and the animals were sacrificed 96 h after dosing. A group of C57BL/6J female mice were chronically exposed to drinking water containing 500 microg As(V)/l of sodium arsenate ad libitum for over 2 years. Porphyrins were measured in the harderian glands of rats and mice. Our results suggest that HP and the alteration of the porphyrin profile in the harderian glands of rodents is a highly sensitive biomarker for both single sub-lethal and chronic arsenic exposure.
Ng
Jack C
JC
National Research Centre for Environmental Toxicology, University of Queensland, 39 Kessels Road, Coopers Plains, Brisbane, Qld 4108, Australia. j.ng@mailbox.uq.edu.au
Qi
Lixia
L
Moore
Michael R
MR
D000818:Animals; D018053:Arsenites / Q000008:administration & dosage / Q000633:toxicity*; D015415:Biomarkers; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000633:toxicity*; D005260:Female; D006243:Harderian Gland / Q000187:drug effects* / Q000378:metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D011166:Porphyrins / Q000032:analysis*; D051381:Rats; D017208:Rats, Wistar; D017670:Sodium Compounds / Q000008:administration & dosage / Q000633:toxicity*
D018053:Arsenites; D015415:Biomarkers; D004791:Enzyme Inhibitors; D011166:Porphyrins; D017670:Sodium Compounds; C040589:harderoporphyrin; C017947:sodium arsenite