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Related Concept Videos

Introduction to the Human Microbiota01:22

Introduction to the Human Microbiota

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Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity,...
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Functions of the Gut Microbiota01:18

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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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Microbiota of the Large Intestine01:27

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The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...
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Development of Human Microbiota01:30

Development of Human Microbiota

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The human microbiota begins developing at birth and undergoes continual change as we age. Infancy marks a critical period of microbial sensitivity, offering a “window of opportunity” during which beneficial microbes help mature the immune system. By age three, children typically develop a more stable and diverse microbial community. Newborns acquire microbes from their immediate environment; vaginal delivery favors maternal vaginal microbes, while cesarean births favor microbes from...
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The Oral Microbiota01:27

The Oral Microbiota

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The oral microbiome includes a complex ecosystem comprising over 700 microbial species, identified through genomic sequencing and culture-based analyses to date. This community includes a core microbiome, found universally among individuals, and a variable component influenced by environmental factors such as diet, lifestyle, and host genetics. Site-specific conditions, including oxygen gradients, pH levels, and nutrient availability, determine the spatial distribution of these microorganisms...
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Gut-Brain Axis01:22

Gut-Brain Axis

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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...
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Related Experiment Video

Updated: Mar 21, 2026

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing

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[The microbiome: just a hype or really important?].

Vanessa C Harris1, W J Joost Wiersinga

  • 1Academisch Medisch Centrum, afd. Inwendige Geneeskunde en Infectieziekten en Center for Experimental Molecular Medicine (CEMM), Amsterdam.

Nederlands Tijdschrift Voor Geneeskunde
|May 12, 2016
PubMed
Summary

Microbiome research is rapidly expanding, with significant funding and publications. This study investigates the actual clinical relevance of the human microbiome in patient care, moving beyond the hype.

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Area of Science:

  • Microbiology
  • Clinical Medicine
  • Genomics

Background:

  • The human microbiome is increasingly recognized for its role in health and disease.
  • Significant funding and a surge in publications highlight the growing interest in microbiome research.
  • There is public and scientific debate regarding the tangible clinical applications of current microbiome research.

Purpose of the Study:

  • To critically evaluate the current clinical relevance of microbiome research.
  • To determine if microbiome findings translate into practical patient care.
  • To assess the validity of the microbiome's impact beyond research funding and publications.

Main Methods:

  • Systematic review of recent microbiome studies with clinical outcomes.
  • Analysis of funding trends and publication rates in microbiome research.
  • Expert consultation on the integration of microbiome data into clinical practice.

Main Results:

  • While microbiome research shows promise, direct clinical applications remain limited.
  • Many studies identify correlations but lack causal links or validated therapeutic interventions.
  • The translation of microbiome discoveries into routine patient care is still in its early stages.

Conclusions:

  • Current microbiome research has potential but requires further validation for widespread clinical use.
  • Distinguishing between hype and genuine medical implications is crucial for future research direction.
  • More robust clinical trials are needed to establish the microbiome's definitive role in patient treatment.