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  • Title: Quantification of Toxoplasma gondii in tissue samples of experimentally infected goats by magnetic capture and real-time PCR.
    Author: Juránková J, Opsteegh M, Neumayerová H, Kovařčík K, Frencová A, Baláž V, Volf J, Koudela B.
    Journal: Vet Parasitol; 2013 Mar 31; 193(1-3):95-9. PubMed ID: 23219045.
    Abstract:
    Undercooked meat containing tissue cysts is one of the most common sources of Toxoplasma gondii infection in humans. Goats are very susceptible to clinical toxoplasmosis, and especially kids are common food animals, thereby representing a risk for human infection. A sequence-specific magnetic capture method was used for isolation of T. gondii DNA from tissue samples from experimentally infected goat-kids and real-time PCR for the 529 bp repeat element allowed quantification of T. gondii DNA. The contamination level in different types of tissue and in two groups of goats euthanized 30 and 90 dpi was compared. The highest concentration of T. gondii DNA in both groups of goats was found in lung tissue, but only the higher parasite count in lung tissue compared to other organs in group A (euthanized 30 dpi) was statistically significant. T. gondii concentrations were higher in liver and dorsal muscle samples from goats euthanized 90 dpi than in goats euthanized at 30 dpi, while the T. gondii concentration in hearts decreased. This study describes for the first time distribution of T. gondii parasites in post-weaned goat kids. New information about T. gondii predilection sites in goats and about the progression of infection between 30 and 90 dpi was achieved.
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