
%0 Journal Article
%A R Falconer, Ian 
%A Buckley, Tom 
%A TC Runnegar, Maria 
%T Biological Half-Life, Organ Distribution and Excretion of 125I-labelled Toxic Peptide from the Blue-green Alga Microcystis aeruginosa
%J Australian Journal of Biological Sciences
%D 1986/03/01
%V 39
%N 1
%P 17-22
%K 
%R https://doi.org/10.1071/BI9860017
%U https://www.publish.csiro.au/paper/BI9860017 
%X M. aeruginosa is a bloom-forming cyanobacterium which is common in fresh-water lakes. It contains a potent hepatotoxin which when purifed has been shown to be a heptapeptide of molecular weight 1019. The toxin was iodinated with 1251 using the lactoperoxidase method, the labelled toxin administered iI).travenously to adult female rats and the half-life and organ distribution measured. The blood half-life after redistribution into extracellular pools was 42 min. The liver and kidneys showed accumulation of 21·7 ± 1·1 and 5·6 ± 0·2% of the dose respectively after 30 min. Little accumulation was observed in other organs and tissues. Small-intestinal contents and urine contained 9·4 ± 6· 1 and 2·9 ± 1'2% of the dose respectively after 120 min. It was concluded that the liver is the main target organ for both accumulation and excretion of the toxin. 
