Related Experiment Video
Updated: Mar 26, 2026

11:04
The Citrobacter rodentium Mouse Model: Studying Pathogen and Host Contributions to Infectious Colitis
Published on: February 19, 2013
27.2K
[BIOLOGICAL PROPERTIES OF BACTERIA OF THE FAMILY ENTEROBACTERIACEAE AS COMPONENTS OF MICROSYMBIOCENOSIS OF THE FIRST
Meditsinskaia Parazitologiia I Parazitarnye Bolezni
|February 2, 2016
Summary
Enterobacteriaceae from Bithyniidae mollusks and their habitats show similar antilysozyme activity. However, aqueous strains exhibit higher biofilm formation (BFF) than mollusk-associated bacteria, while soil isolates have low BFF.
Area of Science:
- Microbiology
- Environmental Science
- Ecology
Context:
- Enterobacteriaceae are common bacteria found in various environments, including aquatic habitats and associated fauna.
- Bithyniidae mollusks serve as potential reservoirs for Enterobacteriaceae, influencing microbial dynamics in aquatic ecosystems.
- Understanding the biological properties of these bacteria is crucial for assessing their ecological role and potential impact.
Purpose:
- To investigate and compare the biological properties, specifically antilysozyme activity (ALA) and biofilm formation (BFF), of Enterobacteriaceae species.
- To analyze strains isolated from Bithyniidae mollusks (genera Codiella and Bithynia) and their surrounding aquatic and soil habitats.
- To determine variations in virulence factors among these geographically and ecologically distinct bacterial populations.
Summary:
- A total of 117 Enterobacteriaceae strains were analyzed from mollusks and their habitats.
- Antilysozyme activity (ALA) showed no significant difference between strains from mollusks and their aqueous environments.
- Biofilm formation (BFF) was highest in aqueous bacterial strains, lower in mollusk microbiota, and very low in soil isolates.
Impact:
- The findings highlight distinct ecological adaptations in Enterobacteriaceae regarding biofilm formation based on habitat.
- This research contributes to understanding the microbial ecology of Bithyniidae mollusks and their associated aquatic environments.
- The study provides insights into the distribution and behavior of Enterobacteriaceae, relevant for environmental and public health assessments.
Related Concept Videos
Microbiota of the Stomach and Small Intestine
17
The human gastrointestinal (GI) tract is characterized by distinct physicochemical conditions that shape its microbial communities. Among these, the stomach presents a particularly challenging environment for microbial colonization due to its highly acidic pH, ranging from 1 to 3. This extreme acidity effectively limits microbial density. However, certain acid-tolerant microorganisms are capable of surviving in this niche. Notably, Helicobacter pylori can colonize the gastric mucosa,...
17
Microbial Interactions: Parasitism
47
Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
47
Bacterial Gastroenteritis
14
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...
14
Microbiota of the Large Intestine
15
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...
15

