Abstract
An impedimetric mga gene specific DNA sensor was developed by immobilization of single stranded DNA probe onto the screen printed modified gold-dendrimer nanohybrid composite electrode for early and rapid detection of S. pyogenes in human throat swab samples causing rheumatic heart disease. Electrochemical impedance response was measured after hybridization with bacterial single stranded genomic DNA (ssG-DNA) with probe. The sensor was found highly specific to S. pyogenes and can detect as low as 0.01 ng ssDNA in 6 µL sample only in 30 min. The nanohybrid sensor was also tested with non-specific pathogens and characterized by FTIR. An early detection of the pathogen S. pyogenes in human can save damage of mitral and aortic heart valves (rheumatic heart disease) by proper medical care.
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Acknowledgments
Ms. Swati Singh thanks Council of Scientific and Industrial Research, New Delhi for providing financial assistance (CSIR-SRF) to carry out the research work. Authors also thank to Prof. N. N. Mathur (ENT), Safdarjung Hospital for providing patient samples.
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Singh, S., Kaushal, A., Gupta, S. et al. Gene Specific Impedimetric Bacterial DNA Sensor for Rheumatic Heart Disease. Indian J Microbiol 57, 112–115 (2017). https://doi.org/10.1007/s12088-016-0620-6
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DOI: https://doi.org/10.1007/s12088-016-0620-6