Evidence map›Paper›PMID 22306242›Full record

ArticleEuropean journal of pharmacology2012

Acute and chronic methylphenidate alters prefrontal cortex neuronal activity recorded from freely behaving rats.

R Layla Salek, Catherine M Claussen, Adriana Pérez, Nachum Dafny

Abstract read
In one paragraph

Article in European journal of pharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 7% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
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  11. Dorsal raphe neuronal activities are modulated by methylphenidate.Journal of neural transmission (Vienna, Austria : 1996) · 2013
    Article
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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

4 authors at 1 institution in 1 country.

R Layla SalekDepartment of Neurobiology and Anatomy, University of Texas Medical School at Houston, 6431 Fannin Street, suite 7.208B, Houston, TX 77225, United States.
Catherine M Claussen
Adriana Pérez
Nachum Dafny
The University of Texas Health Science Center at Houston · US

Funding

How and Where Methylphenidate Exerts Effect in Adolescent and Adult BrainsR01DA027222 · NIDA · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI DAFNY, NACHUM · 2009 to 2013
$1.5M
NIDA NIH HHS DA027222NIDA NIH HHS R01 DA027222
6 · The paper itself

Abstract

Today's students around the world are striking deals to buy and sell the drug methylphenidate (MPD) for cognitive enhancement. Our knowledge on the effects of MPD on the brain is very limited. The present study was designed to investigate the acute and chronic effect of MPD on the prefrontal cortex (PFC) neurons. On experimental day 1 (ED1) recordings were obtained following saline injections and after 2.5 mg/kg MPD. On ED2 through ED6, daily single 2.5 mg/kg MPD was given followed by 3 washout days (ED7 to 9). On ED10, neuronal recordings were resumed from the same animal after saline and MPD injection similar to that obtained at ED1. Ninety PFC units were recorded, all responded to the initial MPD injection, 66 units (73%) increased their activity at ED10. Recordings were resumed for the 66 units that increased their firing rate at ED1, and following MPD injection 54 units (82%) exhibited significant increases in their baseline firing rates compared to ED1 baseline. When these 54 units were rechallenged (chronic effect) with MPD, 39/54 (72%) exhibited reduction in their firing rate which can be interpreted as tolerance. From the 24 (27%) units that responded to MPD at ED1 by decreasing their activity, 14 units (58%) exhibited a decrease in their baseline firing rates at ED10 compared to ED1 baseline. However, following MPD rechallenge of these 14 units, 11 units (79%) exhibited an increase in their firing rate which is interpreted as sensitization. In conclusion, all PFC units modified their neural baseline activity.

Indexed as

Action PotentialsAnimalsCentral Nervous System SensitizationDrug Administration ScheduleDrug ToleranceElectrodes, ImplantedMaleMethylphenidateNeuronsPrefrontal CortexRatsRats, Sprague-DawleyMethylphenidate

Identifiers

PMID22306242
PMCPMC3293368
OpenAlexW2048139508

What OpenQuestion holds

Textmetadata
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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.