Disease Information

General Information of the Disease (ID: DIS00125)

• Name: Bronchitis
• ICD: ICD-11: CA20

Type(s) of Resistant Mechanism of This Disease

  ADTT: Aberration of the Drug's Therapeutic Target

Drug Resistance Data Categorized by Drug

Approved Drug(s) 1 drug(s) in total

Cefprozil

Drug Resistance Data Categorized by Their Corresponding Mechanisms

Aberration of the Drug's Therapeutic Target (ADTT)

Key Molecule: Penicillin-binding protein 2B (PBP2B) [1], [2], [3]

• Resistant Disease: Streptococcus pneumoniae infection [ICD-11: AA80.2]
• Molecule Alteration: Missense mutation; p.T445A
• Resistant Drug: Cefprozil
• Experimental Note: Identified from the Human Clinical Data
• In Vitro Model: Streptococcus pneumoniae isolates; 1313
• Experiment for Molecule Alteration: Genome sequence assay
• Experiment for Drug Resistance: Agar dilution method assay
• Mechanism Description: MICs for and PBP affinities of the strains correlated with the changes found in the PBP active binding sites.The PBP2b T445-A substitution found in all PISP and PRSP and one PSSP has been found in all low-level Beta-lactam-resistant pneumococci examined.

References

• Ref 1: Amino acid substitutions in mosaic penicillin-binding protein 2 associated with reduced susceptibility to cefixime in clinical isolates of Neisseria gonorrhoeae. Antimicrob Agents Chemother. 2006 Nov;50(11):3638-45. doi: 10.1128/AAC.00626-06. Epub 2006 Aug 28.
• Ref 2: Resistance to Beta-Lactams in Neisseria ssp Due to Chromosomally Encoded Penicillin-Binding Proteins. Antibiotics (Basel). 2016 Sep 28;5(4):35. doi: 10.3390/antibiotics5040035.
• Ref 3: Crystal structures of penicillin-binding protein 2 from penicillin-susceptible and -resistant strains of Neisseria gonorrhoeae reveal an unexpectedly subtle mechanism for antibiotic resistance. J Biol Chem. 2009 Jan 9;284(2):1202-12. doi: 10.1074/jbc.M805761200. Epub 2008 Nov 4.