Article thumbnail
Location of Repository

Differentiation of Neisseria gonorrhoeae strains by polymerase chain reaction and restriction fragment length polymorphism of outer membrane protein IB genes.

By Q C Lau, V T Chow and C L Poh


OBJECTIVES--To employ polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) analysis for the rapid differentiation of Neisseria gonorrhoeae protein IB (PIB) isolates and to compare its usefulness with the widely accepted auxotype/serovar classification scheme. METHODS--The outer membrane protein IB genes of 47 gonococcal isolates belonging to 10 different serovars were amplified by PCR. The approximately 1 kb DNA products were then digested separately with restriction enzymes CfoI and MspA1I, and electrophoresed on agarose gels. RESULTS--Cleavage of PIB genes by MspA1I and CfoI differentiated all the N gonorrhoeae strains into five and six PCR-RFLP profiles, respectively. PCR-RFLP was more discriminatory than auxotyping, which classifies the strains into only two auxotypes. Some strains belonging to common serovars could be further differentiated. A combination of PCR-RFLP analysis, auxotyping and serotyping further increased the discrimination of the strains into 34 subtypes. The PCR-RFLP method was easy to perform, reliable, reproducible, and consistent with published nucleotide sequence data. CONCLUSION--The PCR-RFLP method can augment auxotyping and serotyping or be used as a preliminary screening tool to differentiate N gonorrhoeae strains in areas where serotyping reagents are not easily available

Topics: Research Article
Year: 1995
DOI identifier: 10.1136/sti.71.6.363
OAI identifier:
Provided by: PubMed Central
Sorry, our data provider has not provided any external links therefore we are unable to provide a link to the full text.

Suggested articles

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.