Evidence map›Paper›PMID 24899809›Full record

ArticleNeuropsychiatric disease and treatment2014

Electroretinographic modifications induced by agomelatine: a novel avenue to the understanding of the claimed antidepressant effect of the drug?

Michele Fornaro, Fabio Bandini, Luca Cestari, Christian Cordano, Carla Ogliastro, Claudio Albano, Domenico De Berardis, Matteo Martino, Andrea Escelsior, Giulio Rocchi and 2 more

Open access · goldAbstract read
In one paragraph

Article in Neuropsychiatric disease and treatment, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.6field-weighted citation impact, top 38% 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

6 citing papers in PubMed, 18 citations in OpenAlex.

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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

12 authors at 3 institutions in 1 country.

Michele FornaroDepartment of Educative Science, University of Catania, Catania, Italy.
Fabio BandiniDepartment of Neurology, San Paolo Hospital, Savona, Italy.
Luca CestariDepartment of Ophthalmology, University of Pisa, Pisa, Italy.
Christian CordanoDepartment of Neurosciences, Ophthalmology and Genetics - Section of Neurology, University of Genoa, Genoa, Italy.
Carla OgliastroDepartment of Neurosciences, Ophthalmology and Genetics - Section of Neurology, University of Genoa, Genoa, Italy.
Claudio AlbanoDepartment of Neurosciences, Ophthalmology and Genetics - Section of Neurology, University of Genoa, Genoa, Italy.
Domenico De BerardisNational Health Service, Department of Mental Health, Psychiatric Service of Diagnosis and Treatment, Hospital G. Mazzini, ASL 4, Teramo, Italy.
Matteo MartinoDepartment of Neurosciences, Ophthalmology and Genetics - Section of Psychiatry, University of Genoa, Genoa, Italy.
Andrea EscelsiorDepartment of Neurosciences, Ophthalmology and Genetics - Section of Psychiatry, University of Genoa, Genoa, Italy.
Giulio RocchiDepartment of Neurosciences, Ophthalmology and Genetics - Section of Psychiatry, University of Genoa, Genoa, Italy.
Pantaleo FornaroDepartment of Neurosciences, Ophthalmology and Genetics - Section of Psychiatry, University of Genoa, Genoa, Italy.
Concetta De PasqualeDepartment of Educative Science, University of Catania, Catania, Italy.
University of Catania · ITOspedale San Paolo · ITUniversity of Pisa · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAgomelatine, the first melatonergic antidepressant, has been postulated to enhance the dopaminergic activity at the central nervous system by 5-hydroxytryptamine receptor type 2C (5-HT2C) antagonism, yet the impact of melatonergic agonism on this pathway is unclear. Previous studies employing simplified, yet reliable, proxy (retinal) measures of the central nervous system dopaminergic activity, namely the standard electroretinogram (ERG) technique, suggested a reduction of the dopaminergic activity of the main ERG parameter, the b-wave, by pure melatonin, notably a hormone devoid of any antidepressant activity. Therefore, the antidepressant effects of the melatonergic antidepressant drug agomelatine should be reflected by a differential b-wave trend at ERG versus the effect exerted by pure melatonin, which was eventually found to be due to a contrasting effect on central dopaminergic transmission between the two drugs. OBJECTIVE AND

methodsThe aim of the present preliminary ERG study carried out on healthy volunteers (n=23) receiving agomelatine was to explore the impact of this antidepressant drug on b-wave amplitude and latency of cones in daylight conditions using standard ERG.

resultsAs postulated, agomelatine induced an enhancement of retinal dopaminergic activity, in contrast to what has been previously documented for melatonin.

conclusionGiven the limits of this explorative study, especially the lack of a control group and that of a luminance response function to measure retinal sensitivity, further studies in clinical samples are recommended to allow more tenable conclusions about the potential role of ERG in discriminating between 5-HT antagonism and melatonergic (MT) agonism in relationship to the claimed antidepressant effect of agomelatine.

Indexed as

5-HT2CdopamineelectroretinogramERG

Identifiers

PMID24899809
PMCPMC4038423
OpenAlexW2030424812

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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.