Rapid detection of Brucella spp. using loop-mediated isothermal amplification (LAMP)

Area of Science:

• Microbiology
• Veterinary Science
• Food Safety

Background:

• Brucella spp. cause brucellosis, a zoonotic disease affecting livestock globally, leading to significant health and economic impacts.
• Current diagnostic methods for Brucella spp. require 48-72 hours, which is insufficient for the rapid detection needs of the food industry.
• There is a critical need for a fast, specific, sensitive, and affordable diagnostic method for Brucella spp.

Purpose of the Study:

• To develop and evaluate a rapid, specific, and sensitive Loop-mediated isothermal amplification (LAMP) method for the detection of Brucella spp.
• To target the Brucella-specific omp25 gene for accurate identification.
• To assess the feasibility of LAMP for detecting Brucella spp. in various sample types.

Main Methods:

• Designed LAMP primers targeting the Brucella-specific omp25 gene.
• Utilized Bst DNA polymerase for nucleic acid amplification at a constant temperature (65 °C).
• Detected amplified products using SYBR Green I stain and agarose gel electrophoresis.

Main Results:

• The LAMP assay successfully amplified Brucella spp. DNA within 60 minutes at 65 °C.
• Amplification products were visually detectable via fluorescence and gel electrophoresis.
• The method demonstrated feasibility for detecting Brucella spp. in both blood and milk samples.

Conclusions:

• The developed LAMP method provides a rapid, specific, and sensitive approach for Brucella spp. detection.
• This technique addresses the limitations of traditional methods, meeting the urgent need for faster diagnostics in the food industry.
• LAMP offers a cost-effective and efficient tool for brucellosis surveillance and control in livestock and potentially in food products.