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review · Antibiotics

The Potential of Bacteriophage-Antibiotic Combination Therapy in Treating Infections with Multidrug-Resistant Bacteria

202362 citationsOpen access

In plain language

Antibiotic resistance presents an escalating global public health challenge, made worse by the slow pace of new antibiotic development. While bacteriophage therapy was previously viewed as a direct alternative to antibiotics, the emergence of resistance against phages also threatens its standalone effectiveness. Combining bacteriophages with antibiotics offers a viable strategy for managing multidrug-resistant bacterial infections. In most evaluated instances, these combination therapies have produced positive therapeutic outcomes, although certain combinations show no measurable benefit. Beyond pairing phages with antibiotics, synergistic approaches that combine bacteriophages with other interventions, such as probiotics, also show promise for treating drug-resistant infections. Evaluating and refining these combined regimens provides an avenue to overcome the individual resistance limitations associated with using either antibiotics or phages in isolation.

Key takeaways

  • Antibiotic resistance continues to grow while the development of replacement antibiotics remains limited.
  • Standalone phage therapy faces resistance challenges similar to conventional antibiotics.
  • Combining bacteriophages with antibiotics produces positive outcomes in most examined cases, though some pairings provide no benefit.
  • Pairings of phages with other treatments, including probiotics, offer promising options against multidrug-resistant bacteria.

Why it matters

Multidrug-resistant bacterial infections are becoming increasingly difficult to treat as existing drugs lose efficacy and new antibiotics remain scarce. Because bacteria can also develop resistance to alternative single-agent treatments like phages, combining existing treatments provides a practical way to combat resilient infections without relying solely on the discovery of entirely new antibacterial compounds.

Commercialisation angle

This research highlights potential therapeutic applications for clinical healthcare providers and biopharmaceutical developers tackling multidrug-resistant bacterial infections. The approach focuses on combining existing antibiotics, phages, and probiotics rather than discovering new chemical entities. However, because some combinations fail to provide therapeutic benefits, this concept appears to be at an early research stage, requiring specific pairing validation before clinical formulation or market deployment.

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Abstract

The growing threat of antibiotic resistance is a significant global health challenge that has intensified in recent years. The burden of antibiotic resistance on public health is augmented due to its multifaceted nature, as well as the slow-paced and limited development of new antibiotics. The threat posed by resistance is now existential in phage therapy, which had long been touted as a promising replacement for antibiotics. Consequently, it is imperative to explore the potential of combination therapies involving antibiotics and phages as a feasible alternative for treating infections with multidrug-resistant bacteria. Although either bacteriophage or antibiotics can potentially treat bacterial infections, they are each fraught with resistance. Combination therapies, however, yielded positive outcomes in most cases; nonetheless, a few combinations did not show any benefit. Combination therapies comprising the synergistic activity of phages and antibiotics and combinations of phages with other treatments such as probiotics hold promise in the treatment of drug-resistant bacterial infections.

Research topics

  • Bacteriophages and microbial interactions
  • Antibiotic Resistance in Bacteria
  • Viral gastroenteritis research and epidemiology

Sustainable Development Goals

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DOI: 10.3390/antibiotics12081329

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