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Study M1125

Study name

Ikeda Y 2023

Title

Direct evidence for the involvement of intestinal reactive oxygen species in the progress of depression via the gut-brain axis

Overall design

The aim of this study was to elucidate the impact of scavenging intestinal reactive oxygen species on depression treatment via the gut-brain axis in the chronic restraint stress (CRS) model. A novel polymer-based antioxidant (siSMAPoTN), which was distributed only in the intestine and did not diffuse into the whole body after oral administration, was used. c57BL/6J mice were divided into the following 3 groups (n = 8 in each group): (1) control group, (2) CRS group, and (3) CRS + siSMAPoTN group. The CRS stress procedure lasted for 3 weeks. The siSMAPoTN group was provided ad libitum access to a nanoparticle solution (650 mg-polymer/kg; 5 mmol TEMPO/L) instead of water. Plasma corticosterone levels were evaluated using an LC-MS/MS system.

Study Type

Type1;

Type2;

Data available

Unavailable

Organism

Mouse; c57BL/6J mouse;

Categories of depression

Animal model; Chronic restraint stress model; Chronic restraint stress model;

Criteria for depression

Forced swimming test, tail suspension test

Sample size

24

Tissue

Peripheral; Blood; Plasma;

Platform

MS-based; LC-MS: LaChrom Ultra (Hitachi, Japan) with API 2000 (AB SCIEX, Canada);

PMID

36821954

DOI

10.1016/j.biomaterials.2023.122053

Citation

Ikeda Y, Saigo N, Nagasaki Y. Direct evidence for the involvement of intestinal reactive oxygen species in the progress of depression via the gut-brain axis. Biomaterials. 2023 Apr;295:122053.

Metabolite

Corticosterone;