Evidence map›Paper›PMID 34097788›Full record

ArticleThe European journal of neuroscience2021

Social isolation of adolescent male rats increases anxiety and K

Javier Novoa, Carlos J Rivero, Enrique U Pérez-Cardona, Jaime A Freire-Arvelo, Juan Zegers, Héctor E Yarur, Iván G Santiago-Marerro, José L Agosto-Rivera, Jorge L González-Pérez, Katia Gysling and 1 more

Open access · greenAbstract read
In one paragraph

Article in The European journal of neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.8field-weighted citation impact, top 17% 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, 24 citations in OpenAlex.

  1. Article
  2. Early life adversity disrupts adult social reward motivation.bioRxiv : the preprint server for biology · 2026
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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

11 authors at 4 institutions in 3 countries.

Javier NovoaDepartment of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile.
Carlos J RiveroDepartment of Physiology, School of Medicine, University of Puerto Rico, San Juan, Puerto Rico.
Enrique U Pérez-CardonaDepartment of Physiology, School of Medicine, University of Puerto Rico, San Juan, Puerto Rico.
Jaime A Freire-ArveloDepartment of Physiology, School of Medicine, University of Puerto Rico, San Juan, Puerto Rico.
Juan ZegersDepartment of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile.
Héctor E YarurDepartment of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile.
Iván G Santiago-MarerroDepartment of Neuroscience, Case Western Reserve University, Cleveland, OH, USA.
José L Agosto-RiveraDepartment of Biology, University of Puerto Rico, Rio Piedras, Puerto Rico.
Jorge L González-PérezDepartment of Physiology, School of Medicine, University of Puerto Rico, San Juan, Puerto Rico.
Katia GyslingDepartment of Cellular and Molecular Biology, Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile.ORCID 0000-0002-1986-9799
Annabell C SegarraDepartment of Physiology, School of Medicine, University of Puerto Rico, San Juan, Puerto Rico.ORCID 0000-0001-7963-8290
University of Puerto Rico System · PRPontificia Universidad Católica de Chile · CLCase Western Reserve University · USUniversity of Puerto Rico at Río Piedras · PR

Funding

RISE Option III: MBRS RISE at the UPR Medical Sciences CampusR25GM061838 · NIGMS · UNIVERSITY OF PUERTO RICO MED SCIENCES · PI CADILLA, CARMEN LYDIA · 2000 to 2021
$25.5M
NIGMS NIH HHS R25 GM061838
6 · The paper itself

Abstract

Early life adversity can disrupt development leading to emotional and cognitive disorders. This study investigated the effects of social isolation after weaning on anxiety, body weight and locomotion, and on extracellular dopamine (DA) and glutamate (GLU) in the nucleus accumbens (NAc) and their modulation by corticotropin releasing factor receptor 1. On the day of weaning, male rats were housed singly or in groups for 10 consecutive days. Anxiety-like behaviors were assessed by an elevated plus maze (EPM) and an open field test (OF). Neurotransmitter levels were measured by in vivo microdialysis. Single-housed rats spent less time, and entered more, into the closed arms of an EPM than group-housed rats. They also spent less time in the center of an OF, weighed more and showed greater locomotion. In the NAc, no differences in CRF, or in basal extracellular DA or GLU between groups, were observed. A depolarizing stimulus increased DA release in both groups but to higher levels in isolated rats, whereas GLU increased only in single-housed rats. Blocking CRF-R1 receptors with CP-154,526 decreased DA release in single-housed but not in group-housed rats. The corticotropin releasing factor receptor type 1 receptor antagonist also decreased GLU in group-housed animals. These results show that isolating adolescent rats increases anxiety, body weight and ambulation, as well as the sensitivity of dopaminergic neurons to a depolarizing stimulus. This study provides further evidence of the detrimental effects of social isolation during early development and indicates that dysregulation of the CRF system in the NAc may contribute to the pathologies observed.

Indexed as

DopamineNucleus AccumbensSocial IsolationAnimalsAnxietyMalePotassiumRatsReceptors, Corticotropin-Releasing HormoneDopaminePotassiumReceptors, Corticotropin-Releasing HormoneCRFDAearly life stressnucleus accumbensyoung

Identifiers

PMID34097788
PMCPMC8822505
OpenAlexW3169816939

What OpenQuestion holds

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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.