Changes in the surface carbohydrate composition and exposure of anionic groups caused by beta-lactam antibiotics in streptococci

J Antimicrob Chemother. 1995 Dec;36(6):1031-6. doi: 10.1093/jac/36.6.1031.

Abstract

Upon the addition of beta-lactam antibiotics at concentrations that caused a 50% reduction in the dry weight, beta-haemolytic streptococci produced increased amount of rhamnose, though the hexosamine content remained unchanged. These sugars are components of C-carbohydrate. Sialic acid content also increased in group B streptococcal surfaces and penicillin treatment generated new accessible surface sialic acid residues.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anions
  • Anti-Bacterial Agents / pharmacology*
  • Carbohydrate Metabolism*
  • Hexosamines / metabolism
  • Rhamnose / metabolism
  • Sialic Acids / metabolism
  • Streptococcus agalactiae / drug effects*
  • Streptococcus agalactiae / metabolism*
  • Surface Properties
  • beta-Lactams

Substances

  • Anions
  • Anti-Bacterial Agents
  • Hexosamines
  • Sialic Acids
  • beta-Lactams
  • Rhamnose