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Related Concept Videos

Gut-Brain Axis01:22

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The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such as...
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The human gut microbiome includes a diverse array of microbial species, including beneficial commensals and opportunistic pathogens, which interact to support host health. These microbes contribute to essential functions such as nutrient metabolism, immune system modulation, and maintenance of intestinal barrier integrity. However, disruptions to this equilibrium—referred to as dysbiosis—can have widespread physiological consequences.Dysbiosis is often characterized by reduced microbial...
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Antibiotics have revolutionized modern medicine by saving countless lives from bacterial infections. However, their widespread use has inadvertently harmed the delicate balance of the human gut microbiota. The gut microbiota, a complex community of bacteria, archaea, viruses, and fungi, plays a vital role in regulating metabolism, immune responses, and maintaining intestinal health. Antibiotics, especially broad-spectrum types, disrupt this ecosystem by eradicating both harmful and beneficial...
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Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
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Related Experiment Video

Updated: Jul 10, 2026

Murine Fecal Isolation and Microbiota Transplantation
07:32

Murine Fecal Isolation and Microbiota Transplantation

Published on: May 26, 2023

Decoding the microbiome: Insights into FMT for depression.

Mireia Valles-Colomer1, Jane A Foster2

  • 1Department of Medical and Life Sciences, Universitat Pompeu Fabra, Barcelona, Spain.

Cell Host & Microbe
|July 8, 2026
PubMed
Summary
This summary is machine-generated.

Fecal microbiota transplantation (FMT) shows promise for major depressive disorder (MDD). This study explores the molecular pathways that may explain how FMT impacts MDD clinical responses, advancing microbiome-based treatments.

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Area of Science:

  • Microbiome research
  • Neuroscience
  • Gastroenterology

Background:

  • Major depressive disorder (MDD) is a prevalent mental health condition with complex etiologies.
  • The gut microbiome's influence on brain function and mood is an emerging area of research.
  • Fecal microbiota transplantation (FMT) is a therapeutic strategy modulating the gut microbiome.

Purpose of the Study:

  • To investigate the potential mechanisms underlying the efficacy of FMT in treating MDD.
  • To identify molecular pathways associated with clinical response to FMT in MDD patients.
  • To advance the understanding of the gut-brain axis in psychiatric disorders.

Main Methods:

  • Analysis of microbial composition and function in MDD patients undergoing FMT.
  • Correlation of microbial changes with clinical outcomes and biomarkers.
  • Exploration of host-microbe interactions and metabolic pathways.

Main Results:

  • Identification of specific microbial taxa and functional pathways associated with FMT response in MDD.
  • Elucidation of potential molecular mediators linking gut microbiota alterations to mood improvement.
  • Evidence supporting the role of the gut microbiome in MDD pathophysiology.

Conclusions:

  • FMT may represent a viable therapeutic option for MDD by modulating the gut microbiome.
  • Understanding the molecular underpinnings of FMT response is crucial for optimizing its application.
  • Further research is warranted to translate these findings into clinical practice for mental health.