ArticlePloS one2025
Highly sensitive molecular assay based on Identical Multi-Repeat Sequence (IMRS) algorithm for the detection of Trichomonas vaginalis infection.
Article in PloS one, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Multiplexed Isothermal Amplification Assay for the Detection ofACS omega · 2026Article
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14 authors.
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Abstract
introductionAnnually, approximately 174 million people globally are affected by Trichomonas vaginalis (T. vaginalis) infection. Half of these infections occur in resource-limited regions. Untreated T. vaginalis infections are associated with complications such as pelvic inflammatory disease and adverse pregnancy outcomes mostly seen in women. In resource-limited regions, the World Health Organization (WHO) advocates for syndromic case management. However, this can lead to unnecessary treatment. Accurate diagnosis of T. vaginalis is required for effective and prompt treatment. Molecular tests such as Polymerase Chain Reaction (PCR) have the advantage of having a short turn-around time and allow the use of non-invasive specimens such as urine and vaginal swabs. However, these diagnostic techniques have numerous disadvantages such as high infrastructure costs, false negative and positive results, and interstrain variation among others. This study aimed to evaluate the use of identical multi-repeat sequences (IMRS) as amplification primers for developing ultrasensitive diagnostic for T. vaginalis.
methodsWe used genome-mining approaches based on identical multi-repeat sequences (IMRS) algorithm to identify sequences distributed on the T. vaginalis genome to design a primer pair that targets a total of 69 repeat sequences. Genomic T. vaginalis DNA was diluted from 5.8×102 to 5.8×10-4 genome copies/μl and used as a template in the IMRS-based amplification assay. For performance comparison, 18S rRNA PCR assay was employed.
resultsThe T. vaginalis -IMRS primers offered a higher test sensitivity of 0.03 fg/μL compared to the 18S rRNA PCR (0.714 pg/μL). The limit of detection for the Isothermal assay was 0.58 genome copies/mL. Using real-time PCR, the analytical sensitivity of the T. vaginalis -IMRS primers was <0.01 pg/μL, equivalent to less than one genome copy/μL.
conclusionDe novo genome mining of T. vaginalis IMRS as amplification primers serves as a platform for developing ultrasensitive diagnostics for Trichomoniasis and a wide range of infectious pathogens.
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