1. Detection of African animal trypanosomes: The haematocrit centrifugation technique compared to PCR with samples stored on filter paper or in DNA protecting buffer.
- Author
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Moti, Y., Fikru, R., Büscher, P., Van Den Abbeele, J., Duchateau, L., and Delespaux, V.
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TRYPANOSOMIASIS in animals , *CENTRIFUGATION , *POLYMERASE chain reaction , *FILTER paper , *BUFFER solutions , *RESTRICTION fragment length polymorphisms , *DIAGNOSIS - Abstract
Abstract: The present study aimed at comparing the trypanosome specific 18S-PCR-RFLP using samples stored either on Whatman filter papers (PCR-RFLP-fp) or in a commercial cell lysis and DNA protecting buffer (PCR-RFLP-pb) with the haematocrit centrifugation technique (HCT), a method widely used for the diagnosis of African Animal Trypanosomosis. Out of 411 head of cattle, 49 (11.92%) (CI=8.95–15.45) scored positive for the presence of trypanosomes by HCT whereas 75 (18.25%) (CI=14.63–22.33) and 124 (30.17%) (CI=25.77–34.86) scored positive using PCR-RFLP-fp and PCR-RFLP-pb, respectively. Out of the 49 positives by HCT, 14 (28.57%) (CI=16.58–43.26) and 28 (57.14%) (CI=42.21–71.18) were concordant by PCR-RFLP-fp and PCR-RFLP-pb, respectively. None of the PCR techniques detected parasites from the Trypanozoon group. Although HCT detected more cases of Trypanosoma vivax (33), species identification using PCR-RFLP-fp and PCR-RFLP-pb were significantly different (p <0.001) from the HCT technique. The use of DNA protective buffer is thus recommended as the output of the PCR-RFLP-pb is improved and the risk of contamination between samples is reduced. [Copyright &y& Elsevier]
- Published
- 2014
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