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Functions of the Gut Microbiota

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The gut microbiota includes trillions of microorganisms that colonize the human gastrointestinal tract, including bacteria, archaea, viruses, and fungi. This complex ecosystem plays a critical role in maintaining intestinal and systemic health. Most of these microbes inhabit the large intestine, establishing a relatively stable and diverse community that contributes to gut homeostasis through various metabolic, immunological, and protective mechanisms.Dominant bacterial phyla, such as...

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Author Spotlight: Advancing Diabetes Research with Static Exercise Training in Mice

Author Spotlight: Advancing Diabetes Research with Static Exercise Training in Mice

Published on: March 29, 2024

Exercise training modifies gut microbiota in normal and diabetic mice.

Jennifer E Lambert¹, Jason P Myslicki¹, Marc R Bomhof¹

¹a Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada.

Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquee, Nutrition Et Metabolisme

|May 13, 2015

Summary

Exercise impacts gut microbiota composition in both normal and type 2 diabetic mice. Sedentary mice had different microbial profiles compared to exercised mice, with notable differences in specific bacterial groups.

Keywords:

diabetes diabète exercice physique exercise flore microbiota

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Murine Fecal Isolation and Microbiota Transplantation

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Published on: May 26, 2023

Area of Science:

Microbiome research
Exercise physiology
Metabolic disease

Background:

The gut microbiota plays a crucial role in host metabolism and health.
Type 2 diabetes is associated with alterations in gut microbial composition.
Exercise is known to influence host physiology, but its specific effects on the gut microbiota in diabetes are not fully understood.

Purpose of the Study:

To investigate the influence of exercise on cecal microbiota composition in type 2 diabetic and control mice.
To identify specific bacterial taxa affected by exercise in the context of diabetes.

Main Methods:

Cecal microbiota was collected from type 2 diabetic (db/db) and control (db/(+)) mice.
Mice were subjected to either sedentary or exercise activity for 6 weeks.
Quantitative PCR (qPCR) was used to analyze the abundance of specific bacterial species.

Main Results:

Exercise significantly altered the gut microbiota in both normal and diabetic mice.
Exercised mice showed a greater abundance of certain Firmicutes species and a lower abundance of Bacteroides/Prevotella spp. compared to sedentary mice.
Bifidobacterium spp. increased in exercised normal mice but not in diabetic mice, indicating an interaction between exercise and diabetes.

Conclusions:

Exercise demonstrably impacts gut microbiota composition, affecting key bacterial groups.
The response of Bifidobacterium spp. to exercise differs between normal and diabetic states.
Further research is needed to elucidate the mechanisms by which exercise influences the gut microbiota, particularly in the context of type 2 diabetes.