[an error occurred while processing this directive] ����Ƥ���Բ�ѧ��־ 2006, 32(5) 327-329 DOI:     ISSN: 2096-5540 CN: 32-1880/R

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PubMed
Article by JIANG Fa-xing
Article by QI Mu-ge
Article by WANG Qian-qiu

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Molecular Mechanism of Chromosomally Mediated Resistance in Neisseria gonorrheae

Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing 210042, China

Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing 210042, China

Abstract:

The chromosomally mediated penicillin and tetracycline resistance associated genes include penA, ponA, penB, penC, mtr and tet in Neisseria gonorrhoeae. The mosaic-like structure of penicillin-binding protein 2 gene (penA) is associated with reduced susceptibility to cephalosporin. Double gyrA mutations plus a parC mutation play an important role in the development of high-level fluoroquinolone resistance in N. gonorrhoeae. A single-step mutation in spe gene leads to the high-level spectinomycin resistance. The mutations at multiple loci are associated with multidrug-resistant phenotype.

Keywords: Neisseria gonorrhoeae   Drug tolerance   Chromosomes  
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