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Assessment of Entamoeba histolytica Coproantigen and Specific Salivary IgA in Relation to Real-Time PCR for Detection of Intestinal Amoebiasis

Article

Last updated: 03 Jan 2025

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Abstract

Despite the Entamoeba histolytica was first discovered more than 160 years ago, it remains a major health problem in developing countries, including Egypt. Discriminating the morphologically similar pathogenic species from the non-pathogenic one is a challenging task, specifically when relying on the traditional diagnostic tools as microscopy.  The objective of the current study was to assess the usefulness of detecting E. histolytica coproantigen and specific salivary IgA for proper identification of intestinal infection with E. histolytica, using ELISA, in relation to the gold standard real-time PCR technique. 38 stool samples were proved positive for E. histolytica-like stages by microscopy and subsequently exposed to molecular analysis, using specific primers and probes related to E. histolytica which excluded 8 out of these 38 samples, indicating their relation to non-pathogenic species. All diagnostic tests achieved 100% specificity and relatively good sensitivity of 93.3 and 86.6% for specific coproantigen and salivary IgA respectively. Conclusively, ELISA-specific coproantigen or secretory salivary IgA are rapid reliable cost-effective and relatively sensitive diagnostic tools that can discriminate between pathogenic E. histolytica from those of non-pathogenic E. dispar, thus helpful in epidemiological surveys.  The short duration of the secretory IgA may pose additional advantages as it can diagnose active infection, besides its ability to diagnose amoebic liver abscess.

DOI

10.21608/eajbsc.2022.247919

Keywords

Entamoeba histolytica, ELISA-secretory IgA- coproantigen

Authors

First Name

Asmaa

Last Name

Abd-Alghany

MiddleName

R.

Affiliation

Department of Medical Parasitology, Faculty of Medicine, Cairo University, Egypt

Email

-

City

-

Orcid

-

First Name

Gomaa

Last Name

Eimam

MiddleName

Desoky

Affiliation

Department of Medical Parasitology, Faculty of Medicine, Fayoum University, Fayoum, Egypt

Email

-

City

-

Orcid

-

First Name

Mohamed

Last Name

Badr

MiddleName

S.

Affiliation

Department of Molecular Biology, Medical Research Center, Faculty of Medicine, Ain Shams University

Email

mohamedsbadr@med.asu.ed

City

-

Orcid

-

First Name

Yosra

Last Name

Abdel-Hafez

MiddleName

Nabil

Affiliation

Department of Medical Parasitology, Faculty of Medicine, Cairo University, Egypt

Email

-

City

-

Orcid

-

Volume

14

Article Issue

2

Related Issue

35452

Issue Date

2022-12-01

Receive Date

2022-05-27

Publish Date

2022-07-06

Page Start

7

Page End

12

Print ISSN

2090-0767

Online ISSN

2090-083X

Link

https://eajbsc.journals.ekb.eg/article_247919.html

Detail API

https://eajbsc.journals.ekb.eg/service?article_code=247919

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2

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Original Article

Type Code

673

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences. C, Physiology and Molecular Biology

Publication Link

https://eajbsc.journals.ekb.eg/

MainTitle

Assessment of Entamoeba histolytica Coproantigen and Specific Salivary IgA in Relation to Real-Time PCR for Detection of Intestinal Amoebiasis

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Article

Created At

22 Jan 2023