Neonatal E. Coli
Neonatal E. Coli - Related Videos
08:32
Assessment of Intestinal Transcytosis of Neonatal Escherichia coli Bacteremia Isolates
0 Views •
Cited by 1 •
2023
Escherichia coli causes sepsis in neonates who ingest the bacteria around the time of birth. The process involved in E. coli’s ability to travel from the enteric tract to the bloodstream is poorly understood. This in vitro model assesses the ability of E. coli strains to travel through the intestinal epithelial cells.
08:27
Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat
0 Views •
Cited by 20 •
2014
Here, a procedure is described for the establishment of systemic infection in the neonatal rat with cultures of Escherichia coli K1. This non-invasive procedure permits colonization of the gastrointestinal tract, translocation of the pathogen to the systemic circulation, and invasion of the central nervous system at the choroid plexus.
03:45
Modeling Infection in Neonatal Mice Using Encapsulated Bioluminescent Bacteria
0 Views •
2026
Source: Seman, B. G., et al. A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis. J. Vis. Exp. (2020)The video demonstrates a neonatal mouse model for studying systemic infection using encapsulated bioluminescent bacteria. Neonatal pups are injected with high- or low-dose bacterial suspensions and returned to their mother for postnatal care. The encapsulated bacteria evade early immune detection, spread systemically, and are visualized over time using luminescence imaging. This model...
03:40
Measuring E. coli Bacterial Load in Drosophila melanogaster following E. coli Infection
0 Views •
2025
In this video, we demonstrate a technique for measuring the E. coli bacterial load after injecting E. coli into the thorax of Drosophila melanogaster.
04:30
Preparation of E. coli Spheroplasts
0 Views •
2025
Source: Figueroa, D. M., et.al. Production and Visualization of Bacterial Spheroplasts and Protoplasts to Characterize Antimicrobial Peptide Localization. J. Vis. Exp. (2018)This video demonstrates the production of Escherichia coli spheroplasts by first inhibiting cell division to induce filamentation, followed by enzymatic digestion of the cell wall. The process includes controlled addition of a chelating agent, DNase, and an osmotic stabilizer to ensure proper spheroplast formation and...
FAQs
Severity can increase when bacteria move from colonized mucosal surfaces across epithelial barriers and into the bloodstream. This transition changes a localized interaction into systemic infection, where bacterial spread and the newborn’s limited immune clearance capacity become especially important. Studying each stage helps immunologists connect barrier crossing with sepsis and meningitis risk.
Exposure may occur during delivery or after birth, so investigations must consider both acquisition settings rather than assuming a single source. Once bacteria reach vulnerable mucosal sites, colonization can precede deeper invasion. Comparing these contexts helps researchers examine how timing and location of exposure relate to epithelial crossing, bloodstream entry, and clinical disease.
Bacterial virulence factors are variables that researchers examine alongside host inflammatory responses and bacterial colonization. Comparing these factors with whether organisms remain at mucosal surfaces or cross epithelial barriers can help clarify pathogen contributions to disease progression. In neonatal E. coli research, this supports a more specific account of host-pathogen interactions than focusing on immune immaturity alone.
It provides a model for linking bacterial behavior with the newborn host response. Researchers can examine how colonization, epithelial barrier interactions, inflammatory responses, and bacterial virulence factors fit together during infection. The resulting framework supports interpretation of disease progression and helps identify mechanisms relevant to recognition, antimicrobial decisions, and prevention of severe morbidity.
Assessment should prioritize early recognition of possible disease, followed by treatment directed at the bacterial infection. The rationale is that immature immune defenses may not clear organisms effectively once they invade beyond mucosal surfaces. In infection research, this sequence links timely detection with outcomes such as limiting progression to bloodstream disease.
Research can connect stages of infection, from mucosal colonization and epithelial barrier crossing to bloodstream invasion, with host inflammatory responses. Those connections guide efforts toward earlier recognition and more targeted antimicrobial treatment. They also provide a scientific basis for prevention strategies designed around the specific host-pathogen interactions that make newborns vulnerable.