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Mechanisms and implications of antibiotic resistance in gram-positive bacterial strains

Naifa Alenazi1

  • 1Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia. Naalinze@pnu.edu.sa.

Cellular and Molecular Biology (Noisy-Le-Grand, France)
|January 12, 2025
PubMed

Insights

Antibiotic resistance is a major threat, with bacteria developing ways to evade drugs. This review details resistance mechanisms in dangerous Gram-positive bacteria like Staphylococcus aureus.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Pharmacology

Background:

  • Antibiotics are crucial for treating bacterial infections, saving millions of lives annually.
  • The emergence and spread of antibiotic resistance pose a significant global health challenge.
  • Pathogenic bacteria possess natural or acquired mechanisms to resist antimicrobial agents.

Purpose of the Study:

  • To review the primary mechanisms of antibiotic resistance in bacteria.
  • To highlight the consequences of antibiotic resistance, particularly in Gram-positive pathogens.
  • To underscore the urgent need for novel antibiotic development.

Main Methods:

  • Literature review of antibiotic resistance mechanisms.
  • Analysis of resistance in key Gram-positive bacterial strains.
  • Synthesis of information on bacterial resistance pathways.

Main Results:

  • Key resistance mechanisms include target alteration, reduced drug uptake, active efflux, and drug inactivation.
  • Gram-positive bacteria such as methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus faecium, and penicillin-resistant Streptococcus pneumoniae are critical threats.
  • These resistant strains cause severe community and healthcare-associated infections.

Conclusions:

  • Understanding resistance mechanisms is vital for combating infectious diseases.
  • Targeted strategies are needed to overcome resistance in major Gram-positive pathogens.
  • Continued research and development of new antibiotics are essential.

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