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Related Concept Videos

Dysbiosis of the Gut Microbiota01:18

Dysbiosis of the Gut Microbiota

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...
Gut-Brain Axis01:22

Gut-Brain Axis

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...
Functions of the Gut Microbiota01:18

Functions of the Gut Microbiota

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...
Microbiota Modulation by Antibiotics01:21

Microbiota Modulation by Antibiotics

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...
Obesity01:24

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion01:20

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Drug metabolism, a critical process in the liver, involves two primary phases: Phase I reactions and Phase II conjugation. Obesity introduces significant alterations in this metabolic process, primarily due to fatty infiltration of the liver, leading to conditions such as nonalcoholic fatty liver disease (NAFLD). This condition can modify the activities of both Phase I and II enzymes, impacting how drugs are metabolized in obese patients.Phase I metabolism sees variable effects across...

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An Advanced Murine Model for Nonalcoholic Steatohepatitis in Association with Type 2 Diabetes
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Published on: April 26, 2019

Gut microbiome, obesity, and metabolic dysfunction.

Herbert Tilg1, Arthur Kaser

  • 1Christian Doppler Research Laboratory for Gut Inflammation, Medical University Innsbruck, Innsbruck, Austria. herbert.tilg@i-med.ac.at

The Journal of Clinical Investigation
|June 3, 2011
PubMed
Summary
This summary is machine-generated.

The human gut microbiota may play a role in obesity and metabolic syndrome. Diet influences gut microbes, but more human studies are needed to confirm findings from mouse research.

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Area of Science:

  • Microbiology
  • Metabolic Disorders
  • Human Health

Background:

  • Global rise in obesity and metabolic syndrome.
  • Emerging evidence links gut microbiota to these conditions.
  • Microbiota alterations are associated with obesity and metabolic syndrome.

Purpose of the Study:

  • Investigate the role of gut microbiota in obesity and metabolic syndrome.
  • Explore the impact of diet on gut microbial composition and function.

Main Methods:

  • Review of existing studies on microbiota and metabolic disorders.
  • Analysis of research linking dietary intake to microbial changes.
  • Consideration of fecal transplant studies in disease induction.

Main Results:

  • Obesity and metabolic syndrome are associated with significant changes in gut microbiota.
  • Fecal transplants can induce a metabolic syndrome phenotype, highlighting microbiota's role.
  • Diet and caloric intake rapidly influence intestinal microbial composition and function.

Conclusions:

  • The gut microbiota is implicated in the development of obesity and metabolic syndrome.
  • Diet is a key regulator of the gut microbiome.
  • Further human studies are necessary to validate findings from animal models.