Real-time nucleic acid sequence-based amplification using molecular beacons for detection of enterovirus RNA in clinical specimens

J Clin Microbiol. 2005 Jul;43(7):3136-9. doi: 10.1128/JCM.43.7.3136-3139.2005.

Abstract

Real-time nucleic acid sequence-based amplification (NASBA) using molecular beacon technology (NASBA-beacon) was compared to standard NASBA with postamplification hybridization using electrochemiluminescently labeled probes (NASBA-ECL) for detection of enteroviruses (EV) in 133 cerebrospinal fluid and 27 stool samples. NASBA-ECL and NASBA-beacon were similar in sensitivity, detecting 55 (100%) and 52 (94.5%) EV-positive samples, respectively. There were no false positives. Both NASBA assays were significantly more sensitive than culture. Real-time NASBA-beacon reagents and equipment rental were more expensive than those for NASBA-ECL; however, time to result was shortened by 1.5 h, hands-on time was reduced by 25 min, and the assay was much simpler for technologists to learn and perform.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Cerebrospinal Fluid / virology
  • Child
  • Electrochemistry / methods
  • Enterovirus / genetics
  • Enterovirus / isolation & purification*
  • Enterovirus Infections / virology*
  • Feces / virology
  • Humans
  • Infant
  • Luminescent Measurements / methods
  • Middle Aged
  • Molecular Probes*
  • RNA, Viral / analysis*
  • RNA, Viral / isolation & purification
  • Reagent Kits, Diagnostic
  • Self-Sustained Sequence Replication / methods*
  • Sensitivity and Specificity

Substances

  • Molecular Probes
  • RNA, Viral
  • Reagent Kits, Diagnostic