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Related Concept Videos

Healthcare Associated Infections II: Preventive Measures01:22

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Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
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Related Experiment Video

Updated: Dec 26, 2025

Establishing Stable Binary Cultures of Symbiotic Saccharibacteria from the Oral Cavity
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Altering Routine Intensive Care Unit Practices to Support Commensalism.

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Nutrition in Clinical Practice : Official Publication of the American Society for Parenteral and Enteral Nutrition
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The human microbiome plays a crucial role in health. Critical illness and common medical treatments like antibiotics can disrupt this delicate microbial balance, impacting overall health.

Keywords:
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Area of Science:

  • Microbiology
  • Immunology
  • Gastroenterology

Background:

  • The gastrointestinal (GI) tract harbors trillions of microorganisms, collectively known as the microbiome.
  • The microbiome is vital for numerous bodily functions, including immunity, digestion, absorption, and drug metabolism.
  • Alterations in the microbiome are observed in critical illness, leading to adverse health outcomes.

Purpose of the Study:

  • To investigate the impact of critical illness and common medical interventions on the GI microbiome.
  • To understand the relationship between microbiome changes and patient health in critical care settings.
  • To explore the potential of targeting microbiome-immune interactions for therapeutic interventions.

Main Methods:

  • Observational studies characterizing microbiome composition and diversity in critically ill patients.
  • Analysis of the effects of antibiotics and nutritional support (enteral and parenteral nutrition) on the GI microbiome.
  • Investigating the crosstalk between the microbiome and the host immune system.

Main Results:

  • Critical illness significantly alters the composition and diversity of the GI microbiome.
  • Common medical treatments, including antibiotics and prolonged nutrition support, induce specific changes in the microbiome.
  • Aberrant microbiome functions are linked to untoward effects in critically ill patients.

Conclusions:

  • The GI microbiome is highly sensitive to critical illness and medical interventions.
  • Understanding microbiome alterations is crucial for managing critically ill patients.
  • Targeting microbiome-immune crosstalk presents a promising avenue for novel drug and nutrition therapies.