title: Detection of Mycoplasma pneumoniae by colorimetric loop-mediated isothermal amplification.
abstract: Mycoplasma pneumoniae (M. pneumoniae) is one of the most important pathogens that cause respiratory tract infection in children and adults. In this study, we describe a rapid and sensitive colorimetric loop mediated isothermal amplification (LAMP) method to detect M. pneumoniae. The specificity and sensitivity of this assay were detected with 21 common respiratory pathogens and 39 M. pneumoniae DNA. The sensitivity of LAMP was 100% among 39 M. pneumoniae isolates and the specificity was 100% among 9 members of other Mycoplasma and 12 common respiratory pathogens. The lowest detectable limit (LDL) of this assay was 102 copies, which detected by a series of standard M. pneumoniae DNA. To evaluate the clinical applicability of the LAMP assay, a total of 80 clinical samples were examined by conventional PCR, real-time PCR and the LAMP assays, respectively. The positive rates were 15.0%, 32.5% and 26.3%, respectively. This colorimetric LAMP assay demonstrated a high level of sensitivity comparable with that of conventional PCR for the detection of M. pneumoniae. It is a valuable method for simple, cost-effective and rapid detection of M. pneumoniae in the rural areas and basic clinical of China.
authors.affiliation: Chinese Center for Disease Control and Prevention, Beijing, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Zhao
authors.forename: Zhong
authors.initials: Z
authors.lastname: Liu
authors.forename: Yixin
authors.initials: Y
authors.lastname: Gu
authors.forename: Yuelian
authors.initials: Y
authors.lastname: Yang
authors.forename: Di
authors.initials: D
authors.lastname: Xiao
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Tao
authors.forename: Fanliang
authors.initials: F
authors.lastname: Meng
authors.forename: Lihua
authors.initials: L
authors.lastname: He
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Zhang
mesh_terms: D003124:Colorimetry / Q000379:methods*; D006801:Humans; D009177:Mycoplasma pneumoniae / Q000235:genetics / Q000302:isolation & purification*; D021141:Nucleic Acid Amplification Techniques / Q000379:methods*; D012680:Sensitivity and Specificity