What question did this study set out to answer?

To evaluate the relationship between bacterial abundance and free endotoxin release by gram-negative bacteria during bacitracin-induced colonization in mice and during in vitro growth.

January 1, 1988Scandinavian Journal of Infectious Diseases

Kinetics of Endotoxin Release by Gram-negative Bacteria in the Intestinal Tract of Mice during Oral Administration of Bacitracin and during in Vitro Growth

View Full Paper

Ask AI

Bookmark

Authors

HGH GorisHanze University of Applied Sciences FBFroukje de BoerPhilips (Finland)DWD. van der WaaijLeiden University

Discussion

Member takes

Implication

Controlled animal study demonstrates transient endotoxin surges during bacterial expansion in mice, indicating intestinal endotoxin levels reflect bacterial proliferation rather than total abundance.

Key Points

To evaluate the relationship between bacterial abundance and free endotoxin release by gram-negative bacteria during bacitracin-induced colonization in mice and during in vitro growth.
Administered oral bacitracin to C3H/Law mice to stimulate intestinal colonization and evaluated gram-negative bacteria in culture.
Quantified free endotoxin concentrations in fecal and in vitro culture supernatants using the Limulus amebocyte lysate test across an 8-day period.
Two days of oral bacitracin produced a 3–4 log increase in fecal gram-negative bacteria alongside a significant rise in fecal endotoxin from 10^(1.8 ± 0.2) to 10^(3.3 ± 0.2) µg/g (p < 0.001).
Fecal endotoxin concentrations declined by day 8 to levels not significantly different from baseline, despite gram-negative bacterial loads remaining elevated.
In vitro exponential and early stationary growth caused a corresponding 3–4 log increase in endotoxin, confirming that free endotoxin release depends on active bacterial proliferation.

Cite This Study

Goris et al. (1988) studied this question.

synapsesocial.com/papers/6a8256e1a8461dff0846cb29 https://doi.org/10.3109/00365548809032440

View Full Paper

Ask AI

Bookmark

Implication

Controlled animal study demonstrates transient endotoxin surges during bacterial expansion in mice, indicating intestinal endotoxin levels reflect bacterial proliferation rather than total abundance.

Kinetics of Endotoxin Release by Gram-negative Bacteria in the Intestinal Tract of Mice during Oral Administration of Bacitracin and during in Vitro Growth

Discussion

Member takes

Implication

Key Points

Cite This Study

Kinetics of Endotoxin Release by Gram-negative Bacteria in the Intestinal Tract of Mice during Oral Administration of Bacitracin and during in Vitro Growth

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider