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The Thyroid Gland01:23

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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
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The thyroid hormone (TH) plays a pivotal role in the intricate orchestration of physiological processes, exerting profound effects on development, metabolism, and homeostasis throughout different life stages.
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As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
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Related Experiment Video

Updated: Jan 25, 2026

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Prebiotic inulin-type fructans induce specific changes in the human gut microbiota.

Doris Vandeputte1,2,3, Gwen Falony1,2, Sara Vieira-Silva1,2

  • 1Department of Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium.

Gut
|February 19, 2017
PubMed
Summary

Prebiotic inulin consumption altered gut microbiota composition, with a decrease in Bilophila linked to improved stool consistency and quality of life in adults with constipation. This suggests Bilophila as a novel target for gut health research.

Keywords:
COLONIC MICROFLORACONSTIPATIONPREBIOTIC

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Area of Science:

  • Microbiome research
  • Gut microbiota
  • Metabolomics

Background:

  • Prebiotic interventions are thought to selectively promote beneficial bacteria.
  • Recent evidence suggests broader ecosystem-wide shifts in the gut microbiota.
  • A comprehensive characterization of these shifts is needed.

Purpose of the Study:

  • To investigate the ecosystem-wide effects of inulin fermentation on colon bacterial composition and fecal metabolites.
  • To link microbiota and metabolite changes to clinical outcomes and quality of life in adults with mild constipation.

Main Methods:

  • 16S rDNA microbiota profiling
  • Gas chromatography-mass spectrometry (GC-MS) metabolomics
  • Analysis of fecal samples from a randomized, double-blind, cross-over study (NCT02548247)

Main Results:

  • Inulin consumption did not significantly alter fecal metabolite profiles.
  • A modest effect on global microbiota composition was observed.
  • Specific changes included decreased Bilophila and increased Anaerostipes and Bifidobacterium.
  • Reduced Bilophila abundance correlated with softer stools and improved constipation-specific quality of life.

Conclusions:

  • Inulin-type fructan intervention induces ecosystem-wide microbiota shifts, not just selective bifidogenic effects.
  • The decrease in Bilophila is a key finding, suggesting it as a novel target for mechanistic research.
  • These findings advance the understanding of prebiotic effects on the gut microbiome and host health.