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Bacterial Gastroenteritis

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Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid...
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Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
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Cholera is an acute gastrointestinal disease caused by the Gram-negative bacterium Vibrio cholerae. It is transmitted primarily via the fecal-oral route through the ingestion of contaminated water or food.Vibrio cholerae is a motile, Gram-negative bacterium of the family Vibrionaceae, primarily associated with waterborne outbreaks in areas with inadequate sanitation. Although over 200 serogroups of V. cholerae exist, only O1 and O139 are responsible for epidemic cholera. The O1 serogroup,...
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The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...
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Escherich and Escherichia.

Herbert C Friedmann1

  • 1Department of Chemistry and Molecular Biology, The University of Chicago, Chicago IL 60637.

Ecosal Plus
|October 8, 2015
PubMed
Summary

This essay outlines Theodor Escherich's life and achievements, focusing on his discovery of Escherichia coli. It highlights the profound impact of this bacterium in bacteriology and molecular biology research.

Area of Science:

  • Microbiology
  • Molecular Biology
  • Medical History

Background:

  • Theodor Escherich's pioneering work in pediatrics.
  • Early 20th-century understanding of bacterial pathogens.

Purpose of the Study:

  • To detail Theodor Escherich's biography and scientific contributions.
  • To contextualize the discovery of Bacterium coli commune (Escherichia coli).
  • To underscore the historical significance of Escherichia coli in scientific research.

Main Methods:

  • Biographical review of Theodor Escherich's career.
  • Historical analysis of scientific literature.
  • Examination of the impact of Escherichia coli studies.

Main Results:

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  • Comprehensive overview of Escherich's life and achievements.
  • Detailed background on the isolation and initial characterization of Escherichia coli.
  • Evidence of the organism's early and sustained importance in scientific inquiry.

Conclusions:

  • Theodor Escherich's discovery of Escherichia coli was a pivotal moment.
  • Escherichia coli's foundational role in microbiology and molecular biology was established early.
  • Escherich's legacy extends beyond pediatrics to fundamental biological sciences.