Evidence map›Paper›PMID 22167236›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2012

Confirmation of fenfluramine effect on 5-HT(1B) receptor binding of [(11)C]AZ10419369 using an equilibrium approach.

Sjoerd J Finnema, Andrea Varrone, Tzung-Jeng Hwang, Christer Halldin, Lars Farde

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.4field-weighted citation impact, top 12% of its field
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

20 citing papers in PubMed, 41 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. [Frontiers in neuroscience · 2021
    Article
  5. Article
  6. Inverse changes in raphe and cortical 5-HTSynapse (New York, N.Y.) · 2020
    Article
  7. Article
  8. Cerebral serotonin release correlates with [Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2018
    Article
  9. Article
  10. Article
  11. Cerebral 5-HT release correlates with [Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    Article
  12. Review
  13. Article
  14. Test-retest reliability of the novel 5-HT1B receptor PET radioligand [11C]P943.European journal of nuclear medicine and molecular imaging · 2015
    Article
  15. Article
  16. Test-retest reliability of [11C]AZ10419369 binding to 5-HT(1B) receptors in human brain.European journal of nuclear medicine and molecular imaging · 2014
    Article
  17. Article
  18. Article
  19. Article
  20. Molecular brain imaging in the multimodality era.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2012
    Review
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

5 authors at 1 institution in 1 country.

Sjoerd J FinnemaPsychiatry Section, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden. sjoerd.finnema@ki.se
Andrea Varrone
Tzung-Jeng Hwang
Christer Halldin
Lars Farde
Karolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Assessment of serotonin release in the living brain with positron emission tomography (PET) may have been hampered by the lack of suitable radioligands. We previously reported that fenfluramine caused a dose-dependent reduction in specific binding in monkeys using a classical displacement paradigm with bolus administration of [(11)C]AZ10419369. The aim of this study was to confirm our previous findings using an equilibrium approach in monkey. A total of 24 PET measurements were conducted using a bolus infusion protocol of [(11)C]AZ10419369 in three cynomolgus monkeys. Initial PET measurements were performed to assess suitable K(bol) values. The fenfluramine effect on [(11)C]AZ10419369 binding was evaluated in a displacement and pretreatment paradigm. The effect of fenfluramine on [(11)C]AZ10419369 binding potential (BP(ND)) was dose-dependent in the displacement paradigm and confirmed in the pretreatment paradigm. After pretreatment administration of fenfluramine (5.0 mg/kg), the mean BP(ND) of the occipital cortex decreased by 39%, from 1.38±0.04 to 0.84±0.09. This study confirms that the new 5-HT(1B) receptor radioligand [(11)C]AZ10419369 is sensitive to fenfluramine-induced changes in endogenous serotonin levels in vivo. The more advanced methodology is suitable for exploring the sensitivity limit to serotonin release as measured using [(11)C]AZ10419369 and PET.

Indexed as

Positron-Emission TomographyAnimalsAzabicyclo CompoundsDose-Response Relationship, DrugFemaleFenfluramineMacaca fascicularisOccipital LobeRadiographyReceptor, Serotonin, 5-HT1BSerotoninSerotonin AgentsSpiro Compounds5'-(2-fluorophenyl)-spiro(1-azabicyclo(2.2.2)octane-3,2'(3'H)-furo(2,3-b)pyridine)Azabicyclo CompoundsFenfluramineReceptor, Serotonin, 5-HT1BSerotoninSerotonin AgentsSpiro Compounds

Identifiers

PMID22167236
PMCPMC3318146
OpenAlexW1592515588

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.