DNA Amplification Techniques for the Detection of Toxoplasma gondii Tissue Cysts in Meat Producing Animals: A Narrative Review Article
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Farooq RIAZ
,
Imran RASHID
,
Haroon AKBAR
,
Wasim SHEHZAD
,
Saher ISLAM
,
Amna Arshad BAJWA
,
Khalid SAEED
,
Kamran ASHRAF
Abstract
Background: Toxoplasma gondii is an intracellular parasite, which infects one-third population of world. Humans and animals acquire infection by ingesting oocytes from feces of cats or by meat of other animals having cysts that may lead to congenital, ocular or cephalic toxoplasmosis. Either it is important to detect T. gondii from meat of food animals from retail shops or directly at slaughterhouses, which is meant for export.
Methods: The current research was done without time limitation using such terms as follows: “Toxoplasma gondii”, “Meat”, “Tissue cyst”, “PCR”, “LAMP”, “Screening” and “Immunological assay” alone or in combination, in English language. The used electronic databases for searching included as follows: PubMed, Scopus, Google Scholar, Web of Science and Science Direct. The searches were limited to the published papers to English language.
Results: Sensitivity of different molecular techniques for diagnosis of Toxoplasma is real-time PCR > LAMP > conventional PCR. In addition to these DNA analysis tools, bioassay in mice and cats is considered as “gold standard” to detect T. gondii.
Conclusion: This review article will help the readers for grasping advantages and limitations of different diagnostic tools for screening meat samples for T. gondii. This review also makes bibliography about the type of meat sample to be processed for diagnosis and different primers or sequences to be targeted for T. gondii by number of researches for its detection from meat or tissue sample using DNA amplification techniques.Weiss LM, Dubey JP. Toxoplasmosis: A history of clinical observations. Int J Parasitol. 2009; 39(8):895-901.
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| Files | ||
| Issue | Vol 11 No 4 (2016) | |
| Section | Review Article(s) | |
| Keywords | ||
| Toxoplasma gondii Meat Tissue cyst PCR LAMP Immunological assay | ||
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