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KMID : 0425120130510050573
Parasites, Hosts and Diseases
2013 Volume.51 No. 5 p.573 ~ p.577
Detection of Acute Toxoplasmosis in Pigs Using Loop-Mediated Isothermal Amplification and Quantitative PCR
Wang Yanhua

Wang Guangxiang
Zhang Delin
Yin Hong
Wang Meng
Abstract
A loop-mediated isothermal amplification (LAMP) assay allows rapid diagnosis of Toxoplasma gondii infection. In the present study, the LAMP assay was evaluated using blood from both naturally and experimentally infected pigs. The sensitivity of the LAMP assay was compared with that of Q-PCR. Both assays detected T. gondii in the blood of experimentally infected pigs, with 100% agreement. In infected blood samples, the parasite was detected as early as 2 days post-infection and reached a peak in 3-5 days. In 216 field serum samples, the detection rates of LAMP and Q-PCR assays were 6.9% and 7.8%, respectively. This result indicates that the sensitivity of the LAMP assay was slightly lower than that of the Q-PCR assay. However, the LAMP may be an attractive diagnostic method in conditions where sophisticated and expensive equipment is unavailable. This assay could be a powerful supplement to current diagnostic methods.
KEYWORD
Toxoplasma gondii, loop-mediated isothermal amplification (LAMP), Q-PCR, pig
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