Evidence map›Paper›PMID 33097978›Full record

ArticlePsychopharmacology2021

Methamphetamine exposure and its cessation alter gut microbiota and induce depressive-like behavioral effects on rats.

Shadab Forouzan, Kristi L Hoffman, Therese A Kosten

Abstract read
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In one paragraph

Article in Psychopharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 36 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

3 authors at 2 institutions in 1 country.

Shadab ForouzanDepartment of Psychology, Texas Institute for Measurement, Evaluation and Statistics (TIMES), University of Houston, Health and Biomedical Sciences Building 1, 4849 Calhoun Road, Houston, TX, 77204-6022, USA.
Kristi L HoffmanMolecular VIrology and Microbiology Alkek Center for Metagenomics and Microbiome Research, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
Therese A KostenDepartment of Psychology, Texas Institute for Measurement, Evaluation and Statistics (TIMES), University of Houston, Health and Biomedical Sciences Building 1, 4849 Calhoun Road, Houston, TX, 77204-6022, USA. takosten@uh.edu.ORCID http://orcid.org/0000-0002-6932-9184
University of Houston · USBaylor College of Medicine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

rationaleMethamphetamine is a highly abused psychostimulant drug and its use remains a major public health concern worldwide with limited effective treatment options. Accumulative evidence reveals the influence of gut microbiota on the brain, behavior, and health as a part of the gut-brain axis but its involvement in modulating this substance use disorder remains poorly understood.

objectiveWe sought to determine whether methamphetamine exposure and cessation or withdrawal alter the intestinal gut microbiota as well as characterize cessation-induced behavioral changes.

methodsMale, Sprague-Dawley rats were administered methamphetamine (2 mg/kg; s.c.) or vehicle (n = 8 per group) twice per day for 14 consecutive days. On various days before, during, and after administration, fecal samples were collected and tests of anxiety- and depressive-like behaviors were conducted.

resultsMethamphetamine administration and cessation did not alter the relative abundance of bacteria but significantly changed the composition of gut bacteria through 16S rRNA sequencing. These changes were normalized after 7 days of methamphetamine cessation. Moreover, acute methamphetamine cessation induced depressive-like behavior, with an increase in immobility in the forced swim test but did not alter anxiety-like behaviors in tests of open field test or elevated plus maze.

conclusionsThese findings provide direct evidence that methamphetamine and its cessation cause gut dysbiosis and that the latter associates with depressive-like behavior in rodents. Our observation will contribute to a better understanding of the function of gut microbiota in the process of substance use disorders and guide the choice of target therapeutics.

Indexed as

AnimalsAnxietyAnxiety DisordersBehavior, AnimalBrainCentral Nervous System StimulantsDepressionDose-Response Relationship, DrugDysbiosisFecesGastrointestinal MicrobiomeMaleMethamphetamineRatsRats, Sprague-DawleyRNA, Ribosomal, 16SCentral Nervous System StimulantsMethamphetamineRNA, Ribosomal, 16SAddictionAnxietyDysbiosisGut-brain axisMethamphetamine use disorderMicrobiomeNegative affectWithdrawal

Identifiers

PMID33097978
OpenAlexW3094079259

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.