Evidence map›Paper›PMID 24875230›Full record

ArticleMolecular imaging and biology2014

Syntheses and radiosyntheses of two carbon-11 labeled potent and selective radioligands for imaging vesicular acetylcholine transporter.

Prashanth K Padakanti, Xiang Zhang, Junfeng Li, Stanley M Parsons, Joel S Perlmutter, Zhude Tu

Abstract read
In one paragraph

Article in Molecular imaging and biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Prashanth K PadakantiDepartment of Radiology, Washington University School of Medicine, 510 South Kingshighway Blvd, St. Louis, MO, 63110, USA.
Xiang Zhang
Junfeng Li
Stanley M Parsons
Joel S Perlmutter
Zhude Tu

Funding

INVESTIGATIONS OF DEMENTIA IN PARKINSON DISEASER01NS075321 · NINDS · WASHINGTON UNIVERSITY · PI CAMPBELL, MEGHAN C, PERLMUTTER, JOEL SYNES · 2011 to 2021
$8.2M
PET PROBES FOR IMAGING THE VESICULAR ACETYLCHOLINE TRANSPORTERR01NS075527 · NINDS · WASHINGTON UNIVERSITY · PI TU, ZHUDE · 2011 to 2021
$4.9M
VALIDATION OF NEUROIMAGING BIOMARKERS FOR NIGROSTRIATAL NEURONSR01NS058714 · NINDS · WASHINGTON UNIVERSITY · PI PERLMUTTER, JOEL SYNES · 2008 to 2016
$4.4M
DEVELOPING PET AGENTS FOR IMAGING PHOSPHODIESTERASE 10A (PDE10A)R33MH092797 · NIMH · WASHINGTON UNIVERSITY · PI TU, ZHUDE · 2013 to 2015
$1.5M
DEVELOPMENT OF VESICULAR ACETYLCHOLINE TRANSPORTER IMAGING AGENTS FOR PETR21NS061025 · NINDS · WASHINGTON UNIVERSITY · PI TU, ZHUDE · 2009 to 2010
$628k
DEVELOPING PET AGENTS FOR IMAGING PHOSPHODIESTERASE 10A (PDE10A)R21MH092797 · NIMH · WASHINGTON UNIVERSITY · PI TU, ZHUDE · 2011 to 2012
$530k
NIMH NIH HHS MH092797NIMH NIH HHS R21 MH092797NIMH NIH HHS R33 MH092797NINDS NIH HHS NS061025NINDS NIH HHS NS075527NINDS NIH HHS R01 NS058714NINDS NIH HHS R01 NS075321NINDS NIH HHS R01 NS075527NINDS NIH HHS R21 NS061025
6 · The paper itself

Abstract

purposeThe vesicular acetylcholine transporter (VAChT) is a specific biomarker for imaging presynaptic cholinergic neurons. The syntheses and C-11 labeling of two potent enantiopure VAChT inhibitors are reported here. PROCEDURES: Two VAChT inhibitors, (±)-2 and (±)-6, were successfully synthesized. A chiral HPLC column was used to resolve the enantiomers from each corresponding racemic mixture for in vitro characterization. The radiosyntheses of (-)-[(11)C]2 and (-)-[(11)C]6 from the corresponding desmethyl phenol precursor was accomplished using [(11)C]methyl iodide or [(11)C]methyl triflate, respectively.

resultsThe synthesis of (-)-[(11)C]2 was accomplished with 40-50 % radiochemical yield (decay-corrected), SA > 480 GBq/μmol (EOB), and radiochemical purity >99 %. Synthesis of (-)-[(11)C]6 was accomplished with 5-10 % yield, SA > 140 GBq/μmol (EOB), and radiochemical purity >97 %. The radiosynthesis and dose formulation of each tracer was completed in 55-60 min.

conclusionsTwo potent enantiopure VAChT ligands were synthesized and (11)C-labeled with good radiochemical yield and specific activity.

Indexed as

Carbon RadioisotopesIsotope LabelingLigandsPositron-Emission TomographyRadiopharmaceuticalsStereoisomerismVesicular Acetylcholine Transport ProteinsCarbon RadioisotopesLigandsRadiopharmaceuticalsVesicular Acetylcholine Transport Proteins

Identifiers

PMID24875230
PMCPMC4414325

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.