Evidence map›Paper›PMID 22349718›Full record

Trial reportEuropean journal of nuclear medicine and molecular imaging2012

Imaging of the brain serotonin transporters (SERT) with 18F-labelled fluoromethyl-McN5652 and PET in humans.

Swen Hesse, Peter Brust, Peter Mäding, Georg-Alexander Becker, Marianne Patt, Anita Seese, Dietlind Sorger, Jörg Zessin, Philipp M Meyer, Donald Lobsien and 7 more

Abstract readClinical Trial
PubMed Publisher
In one paragraph

Trial report in European journal of nuclear medicine and molecular imaging, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Cerebral serotonin transporter measurements with [Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2019
    Pooled it
  2. Central noradrenaline transporter availability in highly obese, non-depressed individuals.European journal of nuclear medicine and molecular imaging · 2017
    Trial
  3. Article
  4. Article
  5. Article
  6. Review
  7. Advantages in functional imaging of the brain.Frontiers in human neuroscience · 2015
    Review
  8. Article
  9. Article
  10. Review
  11. Article
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

17 authors.

Swen HesseDepartment of Nuclear Medicine, University of Leipzig, Leipzig, Germany. swen.hesse@medizin.uni-leipzig.de
Peter Brust
Peter Mäding
Georg-Alexander Becker
Marianne Patt
Anita Seese
Dietlind Sorger
Jörg Zessin
Philipp M Meyer
Donald Lobsien
Sven Laudi
Bernd Habermann
Frank Füchtner
Julia Luthardt
Anke Bresch
Jörg Steinbach
Osama Sabri

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purpose[(11)C]DASB is currently the most frequently used highly selective radiotracer for visualization and quantification of central SERT. Its use, however, is hampered by the short half-life of (11)C, the moderate cortical test-retest reliability, and the lack of quantifying endogenous serotonin. Labelling with (18)F allows in principle longer acquisition times for kinetic analysis in brain tissue and may provide higher sensitivity. The aim of our study was to firstly use the new highly SERT-selective (18)F-labelled fluoromethyl analogue of (+)-McN5652 ((+)-[(18)F]FMe-McN5652) in humans and to evaluate its potential for SERT quantification.

methodsThe PET data from five healthy volunteers (three men, two women, age 39 ± 10 years) coregistered with individual MRI scans were semiquantitatively assessed by volume-of-interest analysis using the software package PMOD. Rate constants and total distribution volumes (V (T)) were calculated using a two-tissue compartment model and arterial input function measurements were corrected for metabolite/plasma data. Standardized uptake region-to-cerebellum ratios as a measure of specific radiotracer accumulation were compared with those of a [(11)C]DASB PET dataset from 21 healthy subjects (10 men, 11 women, age 38 ± 8 years).

resultsThe two-tissue compartment model provided adequate fits to the data. Estimates of total distribution volume (V (T)) demonstrated good identifiability based on the coefficients of variation (COV) for the volumes of interest in SERT-rich and cortical areas (COV V (T) <10%). Compared with [(11)C]DASB PET, there was a tendency to lower mean uptake values in (+)-[(18)F]FMe-McN5652 PET; however, the standard deviation was also somewhat lower. Altogether, cerebral (+)-[(18)F]FMe-McN5652 uptake corresponded well with the known SERT distribution in humans.

conclusionThe results showed that (+)-[(18)F]FMe-McN5652 is also suitable for in vivo quantification of SERT with PET. Because of the long half-life of (18)F, the widespread use within a satellite concept seems feasible.

Indexed as

Fluorine RadioisotopesAdultBinding SitesBiological TransportBlood ProteinsBrainFemaleHumansIsoquinolinesMalePositron-Emission TomographyReference StandardsSafetySerotonin Plasma Membrane Transport ProteinsBlood ProteinsFluorine RadioisotopesIsoquinolinesMcN 5652Serotonin Plasma Membrane Transport Proteins

Identifiers

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Registered trials

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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.