What antibiotics are effective against Proteus mirabilis (P. mirabilis) respiratory infections?

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Last updated: February 15, 2025View editorial policy

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From the Research

Effective Antibiotics Against P. mirabilis Respiratory Infections

  • Cefepime has been shown to be effective against P. mirabilis, with no resistance observed in a study of 20 patients with pneumonia caused by this pathogen 1.
  • Piperacillin-tazobactam, carbapenems, and cephalosporins have also been found to have high susceptibility levels against P. mirabilis 2.
  • Imipenem and aztreonam have been reported to have low resistance rates among P. mirabilis strains 3.

Antibiotics with Limited Effectiveness

  • Ampicillin has been shown to have high resistance rates among P. mirabilis strains, with 55% resistance observed in one study 1 and 100% resistance observed in another study 3 is not directly relevant to this point, but does show high resistance to ampicillin.
  • Tetracycline has also been found to have high resistance rates, with 100% resistance observed in one study 1.
  • Cephalothin, trimethoprim-sulfamethoxazole have been reported to have low susceptibilities against P. mirabilis 2.

Novel Therapeutic Targets

  • Methionine tRNA synthetase (MetRS) has been identified as a potential target for novel antibiotics against P. mirabilis, with a homology model constructed and validated for this enzyme 4.
  • Plant extracts, such as Pterocarpus angolensis leaf extracts, have been found to have antibacterial effects against P. mirabilis and may be a potential source of new antibiotics 5.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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