Peng Zhe,Zhu Chaomin,Xing Linlin,Liu Ruixi.Correlation between Beijing genotype strains of Mycobacterium tuberculosis and drug-resistant phenotypes in Chongqing children with tuberculosis[J].J Amry Med Univ (J Third Mil Med Univ),2010,32(23):2545-2548.
Peng Zhe,Zhu Chaomin,Xing Linlin,Liu Ruixi.Correlation between Beijing genotype strains of Mycobacterium tuberculosis and drug-resistant phenotypes in Chongqing children with tuberculosis[J].J Amry Med Univ (J Third Mil Med Univ),2010,32(23):2545-2548.DOI:
Objective To study the correlation between Beijing genotype strains of Mycobacterium tuberculosis and drug resistance phenotypes in children with tuberculosis. Methods Beijing genotype strains of Mycobacterium tuberculosis were detected in 143 children with tuberculosis by deletion-target multiple PCR (DTM-PCR). Drug susceptibility testing was performed using the absolute concentration method. Data about the children with tuberculosis were collected
including their age
sex
residence
BCG vaccination and tuberculous meningitis. Correlation between Beijing genotype strains of Mycobacterium tuberculosis
drug-resistance phenotypes and related factors were analyzed by Chi-square test and Fisher’s exact test
respectively. Results Of the 143 clinical isolates of Mycobacterium tuberculosis,91 (63.6%) were Beijing genotype strains. Beijing genotype strains were not correlated with the age
sex
residence
BCG vaccination and tuberculous meningitis(P0.05). The percentage of isoniazid-resistant isolates (15.4%
14/91) and streptomycin resistant isolates(16.5%
15/91) was significantly higher in Beijing genotype strains than in non-Beijing genotype strains(3.8%
2/52;3.8%
2/52
P0.05). Conclusion The Beijing genotype strains of Mycobacterium tuberculosis are predominant in children with tuberculosis in Chongqing and are not correlated with their age
sex
residence
BCG vaccination and tuberculous meningitis. Isoniazid-resistance and streptomycin-resistance are easier to occur in children infected with Beijing genotype strains.