ArticleScientific reports2016
A magneto-DNA nanoparticle system for the rapid and sensitive diagnosis of enteric fever.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 11 citations in OpenAlex.
- Development of Integrated Systems for On-Site Infection Detection.Accounts of chemical research · 2021Review
- Enteric Fever Diagnosis: Current Challenges and Future Directions.Pathogens (Basel, Switzerland) · 2021Review
- Nucleic acid aptamer-based methods for diagnosis of infections.Biosensors & bioelectronics · 2018Review
- Nanomagnetic System for Rapid Diagnosis of Acute Infection.ACS nano · 2017Article
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Authors and funding
13 authors at 4 institutions in 3 countries.
Funding
Abstract
There is currently no widely available optimal assay for diagnosing patients with enteric fever. Here we present a novel assay designed to detect amplified Salmonella nucleic acid (mRNA) using magneto-DNA probes and a miniaturized nuclear magnetic resonance device. We designed primers for genes specific to S. Typhi, S. Paratyphi A, and genes conserved among Salmonella enterica spp. and utilized strongly magnetized nanoparticles to enhance the detection signal. Blood samples spiked with in vitro grown S. Typhi, S. Paratyphi A, S. Typhimurium, and E. coli were used to confirm the specificity of each probe-set, and serial 10-fold dilutions were used to determine the limit of the detection of the assay, 0.01-1.0 CFU/ml. For proof of principle, we applied our assay to 0.5 mL blood samples from 5 patients with culture-confirmed enteric fever from Bangladesh in comparison to 3 healthy controls. We were able to detect amplified target cDNA in all 5 cases of enteric fever; no detectable signal was seen in the healthy controls. Our results suggest that a magneto-DNA nanoparticle system, with an assay time from blood collection of 3.5 hours, may be a promising platform for the rapid and culture-free diagnosis of enteric fever and non-typhoidal Salmonella bacteremia.
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