Susceptible Streptococcus spp.

Susceptible Streptococcus spp. refers to a group of Gram-positive, chain-forming cocci within the Streptococcus genus that demonstrate vulnerability to specific antimicrobial agents in laboratory testing (Patterson, 1996, Medical Microbiology). This classification is clinical and taxonomic rather than molecular, encompassing diverse species such as Streptococcus pyogenes (Group A), Streptococcus agalactiae (Group B), and Streptococcus pneumoniae (StatPearls, 2023). These bacteria are significant human pathogens responsible for a wide range of diseases, including pharyngitis, pneumonia, meningitis, and neonatal sepsis. In the context of pharmacology, these organisms are the biological entities targeted by antibiotics, which act upon specific molecular components within the bacteria. Common mechanisms of action include the inhibition of cell wall peptidoglycan synthesis via penicillin-binding proteins or the disruption of protein synthesis through ribosomal binding (Bush & Bradford, 2016, Cold Spring Harb Perspect Med). Monitoring the susceptibility of these species is essential for selecting appropriate therapy and managing the global challenge of antibiotic resistance (CLSI, 2023).

Other names

Streptococcus speciesSensitive StreptococcusStrep bacteriaPenicillin-susceptible Streptococcus

Antibiotics targeting these bacteria typically inhibit cell wall synthesis by binding to penicillin-binding proteins (PBPs) or inhibit protein synthesis by binding to the 30S or 50S ribosomal subunits.