Related Experiment Videos
Detection of Chlamydia trachomatis by isothermal ramification amplification method: a feasibility study
Wandi Zhang1, Menashi Cohenford, Brian Lentrichia
1Department of Pathology, Mount Sinai School of Medicine, New York University, New York, New York 10029, USA.
Journal of Clinical Microbiology
|January 5, 2002
Summary
Ramification amplification (RAM) effectively detects Chlamydia trachomatis DNA in cytological fluid, offering a simple, isothermal alternative to PCR and LCx for sexually transmitted infection screening.
Area of Science:
- Microbiology
- Molecular Diagnostics
- Public Health
Background:
- Chlamydia trachomatis is a primary cause of sexually transmitted disease in the U.S.
- Early detection and treatment are crucial to prevent sequelae.
- Liquid-based cytology enables simultaneous screening for cervical lesions and C. trachomatis.
Purpose of the Study:
- To evaluate the efficacy of cytological fluid for DNA-based amplification of C. trachomatis.
- To compare Ramification Amplification (RAM) with real-time PCR and ligase chain reaction (LCx).
Main Methods:
- Comparison of three DNA amplification methods: RAM, real-time PCR, and LCx.
- Testing of 30 clinical specimens collected in PreservCyt solution.
- RAM utilizes a novel isothermal DNA amplification technique with a circular probe.
Main Results:
- RAM detected as few as 10 C. trachomatis elementary bodies in under 2 hours.
- RAM performance was comparable to real-time PCR.
- Out of 30 specimens, 15 were positive by PCR and LCx, while 14 were positive by RAM.
Conclusions:
- Nucleic acid amplification methods are suitable for detecting C. trachomatis in cytological fluid.
- RAM is a viable alternative to PCR and LCx due to its simplicity and isothermal nature.
- This approach can facilitate screening for C. trachomatis and other sexually transmitted agents.