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Flagella and Motility in Bacteria

Flagella are specialized, thread-like structures that extend from a bacteria's cell envelope. They play a crucial role in motility and chemotaxis. Their structural organization and functioning exemplify sophisticated biological engineering, enabling bacterial survival and adaptability in diverse environments.Structure of the FlagellumA bacterial flagellum consists of three key components: the filament, the hook, and basal body. The filament, a long, helical structure composed of repeating...
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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...
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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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Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
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Visualizing Bacterial Motility Based on a Color Reaction
04:44

Visualizing Bacterial Motility Based on a Color Reaction

Published on: February 15, 2022

Microflora modulation of motility.

Eamonn M M Quigley1

  • 1Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland. e.quigley@ucc.ie

Journal of Neurogastroenterology and Motility
|May 24, 2011
PubMed
Summary

Gastrointestinal motility significantly impacts gut microbiota composition, as seen in small intestinal bacterial overgrowth. This relationship is bidirectional, with microbiota also influencing gut sensorimotor function.

Area of Science:

  • Gastroenterology
  • Microbiology
  • Physiology

Background:

  • Gastrointestinal motility influences gut microbiota, notably in small intestinal bacterial overgrowth.
  • The gut microbiota's role in health and disease is increasingly recognized.
  • Molecular methods reveal the complexity of the gut microbiota.

Purpose of the Study:

  • To re-examine the interaction between gut microbiota and motility.
  • To expose the complex, bidirectional nature of this relationship.

Main Methods:

  • Review of existing literature on gastrointestinal motility and gut microbiota.
  • Analysis of clinical data related to motility disorders and bacterial overgrowth.
  • Consideration of findings from molecular methodologies.
Keywords:
Gastrointestinal motilityIrritable bowel syndromeMetagenome

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Main Results:

  • Impaired motility leads to altered gut microbiota, exemplified by small intestinal bacterial overgrowth.
  • The gut microbiota exerts significant influence on gut sensorimotor function.
  • The interaction between motility and microbiota is confirmed as bidirectional.

Conclusions:

  • The relationship between gut motility and microbiota is complex and reciprocal.
  • Understanding this bidirectional interaction is crucial for both health and disease states.
  • Further research into this 'hidden organ' interaction is warranted.