Detection of the "Tim" gene of sheep using "Tim" Gene of with human origin Giardia Giardia primers release_hpd3umh545aexiaveg7ekf5btq

by Zare Bavani, Mirhadi, F Rezaeian, M Dashti, Zare Bavani

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Giardiasis is an important human parasitic disease. is a genus composed of binuclear flagellate protozoa. is a parasitic species for a wide range of vertebrates, including humans. Heterogeneity in has been shown by serological, biochemical, and molecular analysis. In the present study, the possible genetic similarity between in sheep and humansand their probable zoonosis was investigated. Direct examination and formalin ether concentration technique were performed on the contents and tissues of sheep intestines. The gradient sucrose method was applied to collect and purify cysts, and DNA extraction was performed by the phenol-chloroform method. Only very small amounts of DNA could be extracted after repeated freezing, thawing and suspension with lysis buffer, after which polymerase chain reaction (PCR) was performed for DNA amplification by primers that were designed for of human origin. The gene, "triose phosphate isomerase" (tim or tpi), was selected as the molecular marker and two sets of primers (PM290, PM924) were used. We examined 308 sheep stool samples in our study, including 21 positive samples. Cultures for were negative. Three sheep isolates were determined by a 290 base pair (bp) amplicon that were similar to certain human types. The similarity of the sheep and human genomic characters of implies the possibility that there is transmission of these protozoa between humans and sheep.
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