title: Rapid identification of Mycobacterium tuberculosis infection by a new array format-based surface plasmon resonance method.
abstract: Tubercle bacillus [TB] is one of the most important chronic infectious diseases that cause millions of deaths annually. While conventional smear microscopy and culture methods are widely used for diagnosis of TB, the former is insensitive, and the latter takes up to 6 to 8 weeks to provide a result, limiting the value of these methods in aiding diagnosis and intermediate decisions on treatment. Therefore, a rapid detection method is essential for the diagnosis, prognosis assessment, and recurrence monitoring. A new surface plasmon resonance [SPR] biosensor based on an array format, which allowed immobilizing nine TB antigens onto the sensor chip, was constructed. Simultaneous determination of multiple TB antibodies in serum had been accomplished with this array-based SPR system. The results were compared with enzyme-linked immunosorbent assay, a conventional immunological method. Array-based SPR showed more advantages in providing label-free and real-time detection. Additionally, the high sensitivity and specificity for the detection of TB infection showed its potential for future development of biosensor arrays for TB diagnosis.
authors.affiliation: Graduate Institute of Medical Biotechnology and Laboratory Science, and Research Center for Pathogenic Bacteria, Chang Gung University, No, 259, Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, 333, Taiwan. hclai@mail.cgu.edu.tw.
authors.forename: Shang-Chen
authors.initials: SC
authors.lastname: Hsieh
authors.forename: Chia-Chen
authors.initials: CC
authors.lastname: Chang
authors.forename: Chia-Chen
authors.initials: CC
authors.lastname: Lu
authors.forename: Chia-Fong
authors.initials: CF
authors.lastname: Wei
authors.forename: Chuan-Sheng
authors.initials: CS
authors.lastname: Lin
authors.forename: Hsin-Chih
authors.initials: HC
authors.lastname: Lai
authors.forename: Chii-Wann
authors.initials: CW
authors.lastname: Lin