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A Mouse Model to Assess Innate Immune Response to Staphylococcus aureus Infection
09:15

A Mouse Model to Assess Innate Immune Response to Staphylococcus aureus Infection

Published on: February 28, 2019

Effect of scrubbing and irrigation on staphylococcal and streptococcal counts in contaminated lacerations

J M Howell1, H S Dhindsa, T O Stair

  • 1Department of Emergency Medicine, Georgetown University Hospital, Washington, D.C. 20007-2197.

Antimicrobial Agents and Chemotherapy
|December 1, 1993
PubMed

Insights

Poloxamer 188 scrubbing and povidone iodine irrigation were tested on guinea pig wounds. Povidone iodine treatments significantly reduced streptococcal bacteria but did not affect staphylococcal counts.

Area of Science:

  • Microbiology
  • Wound Healing
  • Infectious Disease

Background:

  • Bacterial contamination of wounds poses a significant risk.
  • Effective wound cleansing is crucial for preventing infection.
  • Staphylococcal and streptococcal species are common wound pathogens.

Purpose of the Study:

  • To evaluate the efficacy of poloxamer 188 scrubbing (SCR) and povidone iodine irrigation (PI) in reducing bacterial load in wounds.
  • To compare the effects of SCR, PI, and a combined SCR-PI approach on specific bacterial counts.

Main Methods:

  • Guinea pig lacerations were inoculated with Staphylococcus and Streptococcus.
  • Treatments included scrubbing with poloxamer 188, irrigation with povidone iodine, or a combination.
  • Bacterial counts were assessed post-treatment.

Main Results:

  • Povidone iodine irrigation (PI) and the combined scrubbing-irrigation (SCR-PI) significantly reduced Streptococcus counts (P < 0.05).
  • Neither SCR nor PI/SCR-PI treatments demonstrated a significant reduction in Staphylococcus counts compared to controls.

Conclusions:

  • Povidone iodine irrigation is effective in reducing Streptococcus contamination in wounds.
  • Current methods show limited efficacy against Staphylococcus in this model.
  • Further research is needed to develop effective strategies against staphylococcal wound infections.

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