Published
2014-12-15
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Optimization of Polymerase Chain Reaction for the detection of the B1 gene of T. gondii

DOI: https://doi.org/10.22490/24629448.1044
Section
Research Article (before OJS)
Liliana Jazmín Cortés Cortés Instituto Nacional de Salud
Diana Carolina Hernández Castro Instituto Nacional de Salud
Mónica Mantilla Hospital Simón Bolívar E.S.E.
María Isabel Medina Hospital Simón Bolívar E.S.E.
Duque Sofía Instituto Nacional de Salud.
Objective: This study aimed at optimizing the amplification conditions of the B1 gene (35 copies in the ge­nome) of T. gondii in cases of possible brain toxoplasmosis. Materials and methods: DNA was extracted from the peritoneal exudate of mice inoculated with the RH strain of T. gondii. Total exudate volume was 17 mL with a concentration of 1x107 parasites/mL. PCR conditions for the B1 gene were further optimized.Results: Serial dilutions from 1x106 to 1x10-1 parasites/mL were needed for amplifying a fragment of 132 bp . This set the detection limit for 1 T. gondii tachyzoite.