Gut microbiota composition is correlated to grid floor induced stress and behavior in the BALB/c mouse

Study information

Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09

study design

laboratory experiment

Citation

PMID PubMed identifier for scientific articles.

23056268

DOI Digital object identifier for electronic documents.

10.1371/journal.pone.0046231

URI

Authors

Bangsgaard Bendtsen KM, Krych L, Sørensen DB, Pang W, Nielsen DS, Josefsen K, Hansen LH, Sørensen SJ, Hansen AK

Journal

PloS one

Year

2012

Stress has profound influence on the gastro-intestinal tract, the immune system and the behavior of the animal. In this study, the correlation between gut microbiota composition determined by Denaturing Grade Gel Electrophoresis (DGGE) and tag-encoded 16S rRNA gene amplicon pyrosequencing (454/FLX) and behavior in the Tripletest (Elevated Plus Maze, Light/Dark Box, and Open Field combined), the Tail Suspension Test, and Burrowing in 28 female BALB/c mice exposed to two weeks of grid floor induced stress was investigated. Cytokine and glucose levels were measured at baseline, during and after exposure to grid floor. Stressing the mice clearly changed the cecal microbiota as determined by both DGGE and pyrosequencing. Odoribacter, Alistipes and an unclassified genus from the Coriobacteriaceae family increased significantly in the grid floor housed mice. Compared to baseline, the mice exposed to grid floor housing changed the amount of time spent in the Elevated Plus Maze, in the Light/Dark Box, and burrowing behavior. The grid floor housed mice had significantly longer immobility duration in the Tail Suspension Test and increased their number of immobility episodes from baseline. Significant correlations were found between GM composition and IL-1α, IFN-γ, closed arm entries of Elevated Plus Maze, total time in Elevated Plus Maze, time spent in Light/Dark Box, and time spent in the inner zone of the Open Field as well as total time in the Open Field. Significant correlations were found to the levels of Firmicutes, e.g. various species of Ruminococccaceae and Lachnospiraceae. No significant difference was found for the evaluated cytokines, except an overall decrease in levels from baseline to end. A significant lower level of blood glucose was found in the grid floor housed mice, whereas the HbA1c level was significantly higher. It is concluded that grid floor housing changes the GM composition, which seems to influence certain anxiety-related parameters.

Experiment 1

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Reviewed Marked as Reviewed by Shaimaa Elsafoury on 2021/02/09

Curated date: 2021/01/10

Curator: WikiWorks

Revision editor(s): WikiWorks, Victoria

Subjects

Location of subjects: Denmark

Host species Species from which microbiome was sampled. Contact us to have more species added.: Mus musculus

Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology: Caecum Blind intestine,Blindgut,Caeca,Caecum,Ceca,Cecum,Intestinum caecum,Intestinum crassum caecum,Intestinum crassum cecum,caecum

Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology: Stimulus or stress design stimulus_or_stress_design,Stimulus or stress design,stimulus or stress design

Group 0 name Corresponds to the control (unexposed) group for case-control studies: control

Group 1 name Corresponds to the case (exposed) group for case-control studies: grid floor induced stress

Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: cases were exposed to a stress factor which is a grid floor exposure for two weeks. this implies that the use of grid floor is a sufficient stressor for inducing a depression-like behavioral state in the TST.

Group 0 sample size Number of subjects in the control (unexposed) group: 14

Group 1 sample size Number of subjects in the case (exposed) group: 14

Lab analysis

Sequencing type: 16S

16S variable region One or more hypervariable region(s) of the bacterial 16S gene: V4

Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance: Roche454

Statistical Analysis

Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).: relative abundances