alexa Diagnosis of Intestinal Parasitoses: Comparison of Two CommercialMethods for Faecal Concentration Using a Polyparasitized ArtificialLiquid Stool
ISSN: 2471-9315

Applied Microbiology: Open Access
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Research Article

Diagnosis of Intestinal Parasitoses: Comparison of Two CommercialMethods for Faecal Concentration Using a Polyparasitized ArtificialLiquid Stool

Paugam A1*, Ngamada F1, Eldin De Pécoulas2 and Yéra H1

1Service de Parasitologie-Mycologie, Hôpital Cochin, Faculté Paris-Descartes, Université Paris-Sorbonne-Cité, AP-HP, 27 rue du Faubourg Saint-Jacques 75014 Paris, France

2Département de Parasitologie et de Mycologie Médicale, UFR des Sciences Pharmaceutiques, Boulevard Henri Becquerel, 14032 Caen Cedex, France

*Corresponding Author:
Andre Paugam
Service de Parasitologie-Mycologie
Hôpital Cochin, Faculté Paris-Descartes
Université Paris-Sorbonne-Cité, AP-HP
27 rue du Faubourg Saint-Jacques 75014 Paris, France
Tel: 33 1 (0) 1 58 41 22 51
Fax: 33 1 (0) 58 41 22 45
E-mail: [email protected]

Received Date: January 18, 2016; Accepted Date: February 11, 2016; Published Date: February 15, 2016

Citation: Paugam A, Ngamada F, Pécoulas ED, Yéra H (2016) Diagnosis of Intestinal Parasitoses: Comparison of Two Commercial Methods for Faecal Concentration Using a Polyparasitized Artificial Liquid Stool. Appli Micro Open Access 2:108. doi: 10.4172/2471-9315.1000108

Copyright: © 2016 Paugam A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

As conventional faecal concentration methods for parasite detection may carry health risks due to the toxicity of the solvents used (ether, acetyl-acetate), we compared parasite recovery obtained with the new solvent-free EasyPara® kit (Servisol, Meudon, France), which consists of a single-use tube containing a porosity gradient filter ( 200 to 400 μm), and that obtained with the Para-Selles® system (Fumouze Diagnostics/Sofibel, Levallois-Perret, France), an ethyl-acetate solvent sedimentation method routinely used in our laboratory. Both kits were used as recommended by their manufacturers. Both kits concentrate parasites in a pellet, which is suspended for microscopic examination. Parasites were identified on the basis of their morphology. The numbers of parasites recovered in the total pellets were compared between the kits. To compare the detection thresholds of the kits, we tested a liquid polyparasitized stool sample prepared by pooling clinical parasitized stool samples (protozoa and helminths) from parasitized patients consulting our hospital and stored in our collection and diluting it with saline solution. Using the liquid polyparasitized stool sample, the recovery concentrations for Entamoeba histolytica/dispar, Entamoeba coli and Angystrongyloides stercoralis larvae were significantly different with the two kits but no difference was observed for Giardi intestinalis cysts and Ascaris, tapeworm egg detection. Parasite recovery was better with the EasyPara® kit than with Para-Selles®, probably owing to the presence of an original porosity gradient filter.

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