A novel radiolabeled graft polymer: Investigation of the radiopharmaceutical potential using Albino Wistar rats

Appl Radiat Isot. 2019 Dec:154:108872. doi: 10.1016/j.apradiso.2019.108872. Epub 2019 Aug 22.

Abstract

Fe3O4 magnetic graft-Lys-poly(HEMA) was synthesized, labeled with 99mTc for the first time and its radiopharmaceutical potential was investigated using animal models in this study. Quality control procedures were carried out using thin layer radiochromatography. The labeling yield of radiolabeled polymer was found to be about 100%. Then, stability and lipophilicity were determined. The lipophilicity of 99mTc labeled Fe3O4 graft-Lys-poly(HEMA) was found to be 3.77. The serum stability experiments demonstrated that approximately 100% of radiolabeled polymer existed as an intact complex in the rat serum within 240 min. Biodistribution of radiolabeled magnetic graft-Lys-poly(HEMA) was performed on female Albino Wistar rats by scintigraphy and biodistribution studies. High uptake was seen in the stomach, the pancreas, brain, ovarian, intestines and the breast.

Keywords: Grafted polymer; HEMA; Nanoparticle; Tc-99m; l-lysine.

MeSH terms

  • Animals
  • Drug Stability
  • Female
  • Magnetite Nanoparticles / chemistry
  • Magnetite Nanoparticles / ultrastructure
  • Male
  • Microscopy, Electron, Scanning
  • Organotechnetium Compounds / chemical synthesis
  • Organotechnetium Compounds / chemistry*
  • Organotechnetium Compounds / pharmacokinetics
  • Polyhydroxyethyl Methacrylate / chemical synthesis
  • Polyhydroxyethyl Methacrylate / chemistry
  • Polyhydroxyethyl Methacrylate / pharmacokinetics
  • Polymers / chemical synthesis
  • Polymers / chemistry
  • Polymers / pharmacokinetics
  • Radiopharmaceuticals / chemical synthesis
  • Radiopharmaceuticals / chemistry*
  • Radiopharmaceuticals / pharmacokinetics
  • Rats
  • Rats, Wistar
  • Tissue Distribution

Substances

  • Magnetite Nanoparticles
  • Organotechnetium Compounds
  • Polymers
  • Radiopharmaceuticals
  • Polyhydroxyethyl Methacrylate