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Phage-host-immune system dynamics in bacteriophage therapy: basic principles and mathematical models.

Dongwoo Chae1

  • 1Department of Pharmacology, Yonsei University College of Medicine, Seoul 03722, Korea.

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|January 10, 2024
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Summary

Phage therapy offers a promising alternative to antibiotics for resistant bacteria. This review presents mathematical models to understand phage pharmacokinetics and pharmacodynamics (PKPD), crucial for optimizing treatment strategies.

Keywords:
Mathematical ModelPhage TherapyPopulation Dynamics

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Area of Science:

  • Microbiology
  • Pharmacology
  • Mathematical Biology

Background:

  • Phage therapy is emerging as a key alternative to antibiotics for multi-drug resistant bacteria.
  • The pharmacokinetics and pharmacodynamics (PKPD) of bacteriophages are not fully understood.
  • Phage replication is a unique characteristic influencing their PKPD.

Purpose of the Study:

  • To present mathematical models for phage, host, and immune system dynamics.
  • To explore proliferative and inundation thresholds in phage therapy.
  • To examine interactions between phages, bacteria, and the immune system.

Main Methods:

  • Development of mathematical models for phage PKPD.
  • Analysis of phage-bacteria-immune system interactions.
  • Exploration of phage replication dynamics.

Main Results:

  • Models elucidate phage PKPD, considering replication and immune response.
  • The study highlights the impact of host immunity on phage dosing.
  • Interactions between diverse phages and bacterial populations are modeled.

Conclusions:

  • Mathematical modeling is essential for understanding phage therapy PKPD.
  • These models aid in interpreting dose-response relationships and optimizing phage cocktails.
  • Insights facilitate the selection of potent phages for therapeutic use.