[125I] beta-CIT-FE and [125I] beta-CIT-FP are superior to [125I] beta-CIT for dopamine transporter visualization: autoradiographic evaluation in the human brain

Nucl Med Biol. 1997 Oct;24(7):629-34. doi: 10.1016/s0969-8051(97)00081-4.


The binding of the three dopamine transporter radioligands ([125I] beta-CIT, [125I] beta-CIT-FE, and [125I] beta-CIT-FP) was studied using whole-hemisphere autoradiography on postmortem human brains. The autoradiograms revealed an intense and homogeneous labeling of the nucleus caudatus and putamen but also to varying extent to serotonergic and noradrenergic transporters of neocortex and thalamus. The order of specificity estimated (striatum over neocortex ratios) was beta-CIT-FP > beta-CIT-FE > > beta-CIT, suggesting that beta-CIT-FE and beta-CIT-FP should be preferred for in vivo studies of the dopamine transporter in the human brain.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Autoradiography / methods*
  • Brain / diagnostic imaging*
  • Brain Chemistry
  • Carrier Proteins / metabolism*
  • Cocaine / analogs & derivatives*
  • Cocaine / chemistry
  • Contrast Media* / chemistry
  • Dopamine Plasma Membrane Transport Proteins
  • Female
  • Humans
  • Iodine Radioisotopes
  • Male
  • Membrane Glycoproteins / metabolism
  • Membrane Transport Proteins*
  • Middle Aged
  • Nerve Tissue Proteins*
  • Nortropanes* / chemistry
  • Serotonin Plasma Membrane Transport Proteins
  • Tomography, Emission-Computed
  • Tomography, Emission-Computed, Single-Photon
  • Tropanes* / chemistry


  • Carrier Proteins
  • Contrast Media
  • Dopamine Plasma Membrane Transport Proteins
  • Iodine Radioisotopes
  • Membrane Glycoproteins
  • Membrane Transport Proteins
  • N-(2-fluoroethyl)-2-carbomethoxy-3-(4-iodophenyl)nortropane
  • Nerve Tissue Proteins
  • Nortropanes
  • SLC6A4 protein, human
  • Serotonin Plasma Membrane Transport Proteins
  • Tropanes
  • 2-carbomethoxy-8-(3-fluoropropyl)-3-(4-iodophenyl)tropane
  • 2beta-carbomethoxy-3beta-(4-iodophenyl)tropane
  • Cocaine