Dye labelled monoclonal antibody assay for detection of Toxic Shock Syndrome Toxin -1 from Staphylococcus aureus

  • V Javid Khojasteh Department of Bacteriology, Guilan University of Medical Sciences, Faculty of Shahid Beheshty, Rasht, Iran.
  • HA Foster Center of Parasitology and Disease Reserch, School of Environment and Life Sciences, University of Salford, The Crescent, Salford M5 4WT, UK.
Keywords: Monoclonal antibody, Staphylococcus aureus, TSST-1, Colloidal dye, ELISA


Objective: The aim of study was to develop a rapid assay, dye labelled monoclonal antibody assay (DLMAA), using non-radioactive organic synthetic dyes for identification of Toxic Shock Syndrome Toxin-1 (TSST-1) producing strains of Staphylococcus aureus.Materials and Methods: The assay protocol required only two simple steps; addition of TSST-1 antigen to a nitrocellulose membrane and then adding a colloidal dye labelled antibody (D/A) suspension detection reagent.Results: The sensitivity and specificity of the assay was determined relative to positive and negative strains compared to an ELISA assay. Overall 100% agreement was found between both assays. The sensitivity for detection of TSST-1 was 30 ng.Conclusion: The DLMAA did not require handling and disposal of radioactive materials. It is a rapid qualitative technique for detection of TSST-1 toxin at room temperature within a short time.


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How to Cite
Javid Khojasteh V, Foster H. Dye labelled monoclonal antibody assay for detection of Toxic Shock Syndrome Toxin -1 from Staphylococcus aureus. Iran J Microbiol. 3(4):170-6.