Comparison of Nested PCR and Conventional Analysis of Plasmodium Parasites in Kano, Nigeria
European Journal of Clinical and Biomedical Sciences
Volume 3, Issue 5, October 2017, Pages: 85-90
Received: Aug. 10, 2017; Accepted: Sep. 5, 2017; Published: Oct. 5, 2017
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Oladele Olasoji Vincent, Department of Medical Microbiology, Faculty of Medical Sciences, University of Jos, Plateau, Nigeria; Department of Educational Services, Universal Basic Education, Abuja, Nigeria
Eugene Ikeh, Department of Medical Microbiology, Faculty of Medical Sciences, University of Jos, Plateau, Nigeria
Feyi Obisakin, National Veterinary Research Institute, Jos, Plateau, Nigeria
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Plasmodium identification represents the crucial factor in malaria diagnosis and treatment across developing countries. Conventional microscopy and the use of rapid diagnostic kits have been extensively applied towards human malaria diagnosis. Recombinant DNA techniques have been applied towards malaria diagnosis as well as in the species specific identification using Plasmodium 18s-rRNA gene. This study was undertaken amongst patients attending the Murtala Mohammed Specialist Hospital, Kano. Blood samples were collected from 350 malaria suspected patients. Microscopic analysis via Giemsa-staining revealed that 220 patients were positive for malaria. RDT analysis showed that 248 test samples were positive for Plasmodium infection. DNA products obtained from the blood samples were analyzed by nested PCR to amplify the 18S ssrRNA Plasmodium gene with genus and specific primers rPLU1/5, rPLU3/4, rVIV1/2, rFAL1/2, rMAL1/2 and rOVA1/2. Data obtained showed that 58.64% of specimens tested by microscopy were false positives while 60.62% of false positives were obtained using RDTs in comparison to nPCR which proved that on 91 out of 350 patients were infected with Plasmodium falciparum, representing 26% of tested specimen. Comparative analysis of nPCR to microscopy showed that the sensitivity and positive predictive values of the nPCR were determined as 100 and 41.36%, respectively, while against RDTs it was 100 and 39.38% respectively. nPCR was determined to be more sensitive and specific than either microscopy or RDTs. This study revealed that the accurate diagnosis of malaria by nPCR was compulsory in malaria-prone regions of Nigeria such that nPCR should be applied routinely in laboratory studies.
Microscopy, RDTs, Nested PCR, Plasmodium falciparum, Kano
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Oladele Olasoji Vincent, Eugene Ikeh, Feyi Obisakin, Comparison of Nested PCR and Conventional Analysis of Plasmodium Parasites in Kano, Nigeria, European Journal of Clinical and Biomedical Sciences. Vol. 3, No. 5, 2017, pp. 85-90. doi: 10.11648/j.ejcbs.20170305.11
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