Evidence map›Paper›PMID 30506634›Full record

ArticleNeuropsychopharmacology reports2019

Effects of chronic fentanyl administration on behavioral characteristics of mice.

Kazuki Fujii, Yumie Koshidaka, Mayumi Adachi, Keizo Takao

Open access · goldAbstract read
In one paragraph

Article in Neuropsychopharmacology reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.2field-weighted citation impact, top 24% 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

19 citing papers in PubMed, 32 citations in OpenAlex.

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    Review
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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.

Kazuki FujiiDepartment of Behavioral Physiology, Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan.ORCID 0000-0002-6686-3322
Yumie KoshidakaLife Science Research Center, University of Toyama, Toyama, Japan.
Mayumi AdachiLife Science Research Center, University of Toyama, Toyama, Japan.
Keizo TakaoDepartment of Behavioral Physiology, Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan.ORCID 0000-0002-4734-3583
University of Toyama · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFentanyl, a synthetic opioid categorized as a narcotic analgesic, has a 100- to 200-fold stronger effect than most opioids, such as morphine. Fatal accidents due to chronic use and abuse of fentanyl are a worldwide social problem. One reason for the abuse of fentanyl is its psychostimulant effects that could induce behavioral changes. The effects of chronic fentanyl administration on behavior, however, are unclear.

methodsAdult male C57BL/6J mice were chronically administered fentanyl (0.03 or 0.3 mg/kg/d i.p.), and various behaviors were assessed using a behavioral test battery.

resultsMice chronically administered a high dose of fentanyl (0.3 mg/kg/d) exhibited decreased anxiety-like behavior as assessed by the open field and elevated plus maze tests. On the other hand, interruption of fentanyl administration led to increased anxiety-like behavior as observed in the light and dark transition test. The hot plate test revealed that chronic administration of fentanyl reduced pain sensitivity. High-dose chronic fentanyl administration reduced the locomotor stimulatory effects of cocaine. The results, however, failed to reach the threshold for study-wide statistical significance.

conclusionChronic fentanyl administration induces some behavioral changes in mice. Although further studies are needed to clarify the underlying mechanisms of the behavioral effects of chronic fentanyl administration, our findings suggest that fentanyl is safe under properly controlled conditions.

Indexed as

AnimalsAnxietyFentanylLocomotionMaleMaze LearningMiceMice, Inbred C57BLNarcoticsFentanylNarcoticsaddictionbehavioral test batterycocainefentanylopioid

Identifiers

PMID30506634
PMCPMC7292323
OpenAlexW2903164652

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.