Journal of Radioanalytical Chemistry

, Volume 79, Issue 2, pp 355–361 | Cite as

Kinetics of 17-(123I) iodoheptadecanoic acid in myocardium of rats

  • S. N. Reske
  • G. Auner
  • C. Winkler
Medical Radionuclides and the Quality of Radiopharmaceuticals


Myocardial uptake and turnover of 17-(123I)-iodoheptadecanoic acid, injected i.v., was studied in rats. Kinetics of radioactivity incorporated into myocardial tissue and heart lipids as well as myocardial radioactivity recovered as123I iodide were determined. Maximal heart uptake of IHA (7.9% dose/g heart) was observed as early as 30 sec., p.i., followed by mono-component elimination period. Already 10 to 30 sec p.i. 70 to 80% of total myocardial radioactivity was recovered as123I iodide. IHA was incorporated only in modest amounts into myocardial phospholipids and triglycerides. Time course of total myocardial radioactivity grossly paralleled that recovered as123I iodide. These findings indicate stringent limitations in utility of IHA as a tracer for assessment of β-oxidation.


Myocardial Uptake Anion Exchange Column Thin Layer Chroma Free Fatty Acid Fraction Radioactivity Uptake 
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Copyright information

© Akadémiai Kiadó 1985

Authors and Affiliations

  • S. N. Reske
    • 1
  • G. Auner
    • 1
  • C. Winkler
    • 1
  1. 1.Institute of Clinical and Experimental NuclearMedicine University of BonnFRG

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