Cited by 12Nicotinic Acetylcholine Receptors StudyRadiopharmaceutical Chemistry and ApplicationsPharmacological Receptor Mechanisms and Effects

Autoradiography of 2‐[18F]F‐A‐85380 on nicotinic acetylcholine receptors in the porcine brain in vitro

Deuther‐Conrad, Winnie, Wevers, Andrea, Becker, Georg, Schildan, Andreas, Patt, Marianne, Sabri, Osama, Steinbach, Jörg, Brust, Peter·2006·Synapse

Abstract

Noninvasive molecular imaging of subtypes of neuronal nicotinic acetylcholine receptors (nAChRs) will provide information on the role of these receptors in neurodegenerative diseases. The binding of the positron emission tomography ligand 2‐[18 F]F‐A‐85380 to nAChRs was investigated in the porcine brain by quantitative autoradiography in vitro. The high‐affinity binding of 2‐[18 F]F‐A‐85380 to each of the investigated 12 brain areas was saturable and apparently monophasic (e.g., apparent KD value of 1.72 nM in the thalamus). The highest density of specific binding sites was observed in the thalamus (1,158 fmol/mg protein), and the lowest density was measured in the cerebellar gray matter (11 fmol/mg protein). An attempt to assess nAChR subtype specificity of 2‐[18 F]F‐A‐85380 was made by competitive autoradiography. Binding of 2‐[18 F]F‐A‐85380 coincubated with 2‐F‐A‐85380, epibatidine, cytisine, or methyllycaconitine, respectively, indicated a specificity of 2‐[18 F]F‐A‐85380 to β2‐containing nAChRs in the porcine brain. The autoradiographic data confirmed the suitability of swine as a model for the evaluation of radioligands designed for imaging of nAChR subtypes in the living brain. Synapse 59:201–210, 2006. © 2005 Wiley‐Liss, Inc.

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Crossref · 10.1002/syn.20232

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Authors
Deuther‐Conrad, W., Wevers, A., Becker, G., Schildan, A., Patt, M., Sabri, O., Steinbach, J., & Brust, P.
Affiliations
  • University of Cologne (DE)
  • University Hospital Leipzig (DE)
Corresponding author
Deuther‐Conrad, Winnie
Venue
Synapse
Publisher
Wiley
Published
2005-12-29
Volume
59
Issue
4
Pages
201-210
ISSN
  • 0887-4476 (ISSN-L)
  • 1098-2396
OpenAlex
W2004529323
Cited by
12
References
51
Citations by year
2020: 1 · 2014: 2 · 2013: 2
FWCI
0.63
Type
journal article
Language
en
Open access
closed
Locations
  • Synapse (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiopharmaceutical Chemistry and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pharmacological Receptor Mechanisms and Effects
Keywords
nicotinic acetylcholine receptors, receptor binding affinity, receptor density, thalamus, competitive binding, epibatidine, methyllycaconitine, cytisine, neurodegenerative diseases
MeSH terms
Animals, Autoradiography, Azetidines, Binding, Competitive, Brain, Female, Humans, Immunohistochemistry, Organ Culture Techniques, Pyridines, Receptors, Nicotinic, Swine, Positron-Emission Tomography

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