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  • Title: [Yield of xenodiagnosis and PCR in the evaluation of specific chemotherapy of Chagas' disease in children].
    Author: Solari A, Contreras MC, Lorca M, García A, Salinas P, Ortíz S, Soto A, Arancibia C, Schenone H.
    Journal: Bol Chil Parasitol; 1998; 53(1-2):27-30. PubMed ID: 9830721.
    Abstract:
    Amplification by the polymerase chain reaction (PCR) of Trypanosoma cruzi kinetoplastic DNA was used to enhance sensitivity in the detection of the parasite in blood, with the ultimate goal of improving the parasitological diagnosis of Chagas' disease in 0-10 year-old infected children. Twenty eight children were evaluated by using xenodiagnosis (XD) and PCR. Whereas XD detected 75.0% of the cases PCR was positive in 96.8%. The usefulness of the PCR was further investigated in the 28 children who have received specific treatment with nifurtimox. Negativation of XD after three and six months post treatment was observed in all the cases, but only 21.4% and 35.8% negativation of the PCR after three and six months post treatment respectively. These observations suggest that PCR is the most sensitive and quick technique available for direct detection of T. cruzi in chagasic children and that it can be a very useful tool for the follow-up of infected subjects after specific chemotherapeutical treatment.
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