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Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat
Published on: October 29, 2014
[Plasmid profile of common neonatal sepsis causative agents]
Insights
Researchers analyzed plasmid profiles in Gram-negative bacteria causing neonatal sepsis. Citrobacter spp. plasmids were most common, with molecular masses ranging from 30 to 120. This aids understanding of sepsis-causing bacteria.
Area of Science:
- Microbiology
- Genetics
- Neonatal Health
Background:
- Neonatal sepsis is a serious health concern caused by Gram-negative bacteria.
- Understanding the genetic elements, such as plasmids, in these bacteria is crucial for treatment and prevention.
Purpose of the Study:
- To investigate the plasmid profiles of Gram-negative bacterial strains responsible for neonatal sepsis.
- To identify the prevalence of different bacterial species and their associated plasmids.
Main Methods:
- Plasmid DNA was isolated from 25 hospital-isolated Gram-negative bacterial strains.
- Plasmid profiles were analyzed to determine the number, type, and molecular mass of plasmids.
Main Results:
- Escherichia coli, Enterobacter spp., and Citrobacter spp. were the most frequent causative agents.
- 26 plasmids were isolated from 25 strains; 50% of these plasmids belonged to Citrobacter spp.
- Plasmid molecular masses ranged from 30 to 120 kilobase pairs.
Conclusions:
- Citrobacter spp. frequently harbor plasmids that may contribute to neonatal sepsis.
- Plasmid profiling provides insights into the genetic makeup of sepsis-causing bacteria.
Abstract:
The plasmid profile of 25 hospital strains of Gram-negative bacteria that are known to be originators of neonatal sepsis was studied by the authors. Of these, E. coli, Enterobacter spp., and Citrobacter spp. proved to be the most frequently seen causative agents in the above health problem, with 13, 5, and 7 strains respectively having been recovered in the studied material. There have been isolated 26 plasmids from the studied 25 bacterial strains. Of these, fifty percent were classified as Citrobacter spp. The molecular mass of the plasmids recovered has been found to vary among 30 and 120.
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