Evidence map›Paper›PMID 12522075›Full record

ArticleBritish journal of pharmacology2003

Pharmacological characterization of 5-HT(1B) receptor-mediated inhibition of local excitatory synaptic transmission in the CA1 region of rat hippocampus.

Boris Mlinar, Chiara Falsini, Renato Corradetti

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.6field-weighted citation impact, top 41% 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

16 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Prelimbic Cortical Stimulation Improves Spatial Memory Through Distinct Patterns of Hippocampal Gene Expression in Aged Rats.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2020
    Article
  5. Article
  6. Of rodents and humans: A comparative review of the neurobehavioral effects of early life SSRI exposure in preclinical and clinical research.International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience · 2016
    Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Serotonin receptors in hippocampus.TheScientificWorldJournal · 2012
    Review
  13. Review
  14. Cell-type-specific modulation of feedback inhibition by serotonin in the hippocampus.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    Article
  15. Article
  16. 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

3 authors at 1 institution in 1 country.

Boris MlinarDipartimento di Farmacologia Preclinica e Clinica Mario Aiazzi-Mancini, Università di Firenze, Viale G. Pieraccini 6, 50139 Florence, Italy.
Chiara Falsini
Renato Corradetti
University of Florence · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1 In the hippocampus, axon collaterals of CA1 pyramidal cells project locally onto neighbouring CA1 pyramidal cells and interneurones, forming a local excitatory network which, in disinhibited conditions, feeds polysynaptic epscs (poly-epscs). 5-hydroxytryptamine (5-HT) has been shown to inhibit poly-epscs through activation of a presynaptic receptor. The aim of the present work was the pharmacological characterization of the 5-HT receptor involved in this 5-HT action. 2 Poly-epscs, evoked by electrical stimulation of the stratum radiatum and recorded in whole-cell voltage-clamp from CA1 pyramidal neurones, were studied in mini-slices of the CA1 region under pharmacological block of GABA(A), GABA(B), and 5-HT(1A) receptors. 3 The 5-HT(1B) receptor selective agonist 1,4-dihydro-3-(1,2,3,6-tetrahydro-4-pyridinyl)-5H-pyrrolo[3,2-b]pyridin-5-one dihydrochloride (CP 93129) inhibited poly-epscs (EC(50)=55 nM), an effect mimicked by the 5-HT(1B) ligands 5-carboxamidotryptamine (5-CT; EC(50)=14 nM) and methylergometrine (EC(50)=78 nM), but not by 1-(3-chlorophenyl)piperazine dihydrochloride (mCPP; 10 micro M) or 7-trifluoromethyl-4(4-methyl-1-piperazinyl)-pyrrolo[1,2-a]quinoxaline dimaleate (CGS 12066B; 10 micro M). 4 The effects of CP 93129 and 5-CT were blocked by the selective 5-HT(1B) receptor antagonist 3-[3-(dimethylamino)propyl]-4-hydroxy-N-[4-(4-pyridinyl)phenyl]benzamide dihydrochloride (GR 55562; K(B) approximately 100 nM) and by cyanopindolol (K(B)=6 nM); methiothepin (10 micro M) and dihydroergotamine (1 micro M). For both GR 55562 and methiothepin, application times of at least two hours were required in order to achieve their full antagonistic effects. 5 Our results demonstrate that 5-HT(1B) receptors are responsible for the presynaptic inhibition of neurotransmission at CA1/CA1 local excitatory synapses exerted by 5-HT.

Indexed as

AnimalsDose-Response Relationship, DrugHippocampusIn Vitro TechniquesNeural InhibitionRatsRats, WistarReceptor, Serotonin, 5-HT1BReceptors, SerotoninSerotonin AntagonistsSerotonin Receptor AgonistsSynaptic TransmissionReceptor, Serotonin, 5-HT1BReceptors, SerotoninSerotonin AntagonistsSerotonin Receptor Agonists

Identifiers

PMID12522075
PMCPMC1573652
OpenAlexW2046345642

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.