Evidence map›Paper›PMID 24249696›Full record

ArticleJournal of neural transmission (Vienna, Austria : 1996)2014

Acute and chronic dose-response effect of methylphenidate on ventral tegmental area neurons correlated with animal behavior.

Zachary Jones, Nachum Dafny

Open access · greenAbstract read
In one paragraph

Article in Journal of neural transmission (Vienna, Austria : 1996), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

14 citing papers in PubMed, 37 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

2 authors at 1 institution in 1 country.

Zachary JonesDepartment of Neurobiology and Anatomy, University of Texas Medical School at Houston, 6431 Fannin St., Houston, TX, 77030, USA, Zachary.R.Jones@uth.tmc.edu.
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 DA RO1 027222NIDA NIH HHS R01 DA027222
6 · The paper itself

Abstract

Methylphenidate (MPD) is used to treat ADHD and as a cognitive enhancement and recreationally. MPD's effects are not fully understood. One of the sites of psychostimulant action is the ventral tegmental area (VTA). The VTA neuronal activity was recorded from freely behaving rats using a wireless system. 51 animals were divided into groups: saline, 0.6, 2.5, and 10.0 mg/kg MPD. The same repetitive MPD dose can elicit either behavioral sensitization or tolerance; thus the evaluation of the VTA neuronal activity was based on the animals' behavioral response to chronic MPD exposure: animals exhibiting behavioral tolerance or sensitization. Acute MPD elicits dose-related increases in behavioral activity. About half of the animals exhibited behavioral sensitization or tolerance to each of the MPD doses. 361 units were recorded from the VTA and exhibited similar spike shape on experimental day 1 (ED1) and on ED10. 71, 84, and 79 % of VTA units responded to acute 0.6, 2.5, and 10.0 mg/kg MPD, respectively. The neuronal baseline activity at ED10 was significantly modified in 94, 95, and 100 % of VTA units following 0.6, 2.5 and 10.0 mg/kg MPD, respectively. Following chronic MPD exposure, 91, 98, and 100 % exhibit either electrophysiological tolerance or sensitization of 0.6, 2.6, or 10.0 mg/kg MPD, respectively. In conclusion, the chronic administration of the same dose of MPD caused some animals to exhibit behavioral sensitization and other animals to exhibit tolerance. The VTA units recorded from animals exhibiting behavioral sensitization responded significantly differently to MPD from animals that exhibited behavioral tolerance.

Indexed as

Action PotentialsAnalysis of VarianceAnimalsBehavior, AnimalCentral Nervous System StimulantsDose-Response Relationship, DrugMaleMethylphenidateMotor ActivityNeuronsRatsRats, Sprague-DawleyStatistics as TopicTime FactorsVentral Tegmental AreaCentral Nervous System StimulantsMethylphenidate

Identifiers

PMID24249696
PMCPMC4743876
OpenAlexW2072355718

What OpenQuestion holds

Textmetadata
LicenceTDM
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.