Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.

Triatoma infestans nymphs have shown a good sensitivity for detecting Trypanosoma cruzi in the blood stream of infected hosts when are used in the xenodiagnosis (XD). This method, with its natural limitations, using seven nymphs III of T. infestans, has been routinely utilized with satisfactory yiel...

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Autores principales: Schenone,Hugo, Rojas Mercado,Antonio, Castillo,Douglas
Lenguaje:Spanish / Castilian
Publicado: Programa de Parasitología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile 2000
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-94022000000100004
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spelling oai:scielo:S0365-940220000001000042005-07-12Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.Schenone,HugoRojas Mercado,AntonioCastillo,Douglas xenodiagnóstico sensibilidad ninfas pacientes chagásicos crónicos Triatoma infestans nymphs have shown a good sensitivity for detecting Trypanosoma cruzi in the blood stream of infected hosts when are used in the xenodiagnosis (XD). This method, with its natural limitations, using seven nymphs III of T. infestans, has been routinely utilized with satisfactory yield. With the aim of an eventual improving of the yiel of XD (with 7 nymphs), two series of 54 XD boxes each, containing a total of 378 nymphs III and 378 nymphs IV respectively, were applied - one of each during three consecutive days - to nine chronic chagasic patients. Each of the nymphs was weighted before and after the application of the boxes, and the intestinal content of them was examined 30 , 60 and 90 days later. The main comparative results obtained with nymphs III and IV of T. infestans were: blood ingestion 40 versus 107 mg (2.7 higher), positivity of insects 35.8% versus 50.6% (15.8% higher), positivity of XD boxes (7 nymphs each)46.3% versus 55.6% (9.3% higher), and mortality rates 28,6% versus 12.2% (16.4% lower). All these results demonstrate that nymphs IV of T. infestans, because their higher capacity of ingesting blood and higher tolerance to examination manipulations, are more suitable for been used in XD.info:eu-repo/semantics/openAccessPrograma de Parasitología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de ChileBoletín chileno de parasitología v.55 n.1-2 20002000-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-94022000000100004es10.4067/S0365-94022000000100004
institution Scielo Chile
collection Scielo Chile
language Spanish / Castilian
topic xenodiagnóstico
sensibilidad
ninfas
pacientes chagásicos crónicos
spellingShingle xenodiagnóstico
sensibilidad
ninfas
pacientes chagásicos crónicos
Schenone,Hugo
Rojas Mercado,Antonio
Castillo,Douglas
Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.
description Triatoma infestans nymphs have shown a good sensitivity for detecting Trypanosoma cruzi in the blood stream of infected hosts when are used in the xenodiagnosis (XD). This method, with its natural limitations, using seven nymphs III of T. infestans, has been routinely utilized with satisfactory yield. With the aim of an eventual improving of the yiel of XD (with 7 nymphs), two series of 54 XD boxes each, containing a total of 378 nymphs III and 378 nymphs IV respectively, were applied - one of each during three consecutive days - to nine chronic chagasic patients. Each of the nymphs was weighted before and after the application of the boxes, and the intestinal content of them was examined 30 , 60 and 90 days later. The main comparative results obtained with nymphs III and IV of T. infestans were: blood ingestion 40 versus 107 mg (2.7 higher), positivity of insects 35.8% versus 50.6% (15.8% higher), positivity of XD boxes (7 nymphs each)46.3% versus 55.6% (9.3% higher), and mortality rates 28,6% versus 12.2% (16.4% lower). All these results demonstrate that nymphs IV of T. infestans, because their higher capacity of ingesting blood and higher tolerance to examination manipulations, are more suitable for been used in XD.
author Schenone,Hugo
Rojas Mercado,Antonio
Castillo,Douglas
author_facet Schenone,Hugo
Rojas Mercado,Antonio
Castillo,Douglas
author_sort Schenone,Hugo
title Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.
title_short Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.
title_full Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.
title_fullStr Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.
title_full_unstemmed Estudio comparativo de la sensibilidad y mortalidad de las ninfas III y IV de Triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.
title_sort estudio comparativo de la sensibilidad y mortalidad de las ninfas iii y iv de triatoma infestans usadas en el xenodiagnóstico de pacientes crónicos.
publisher Programa de Parasitología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile
publishDate 2000
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-94022000000100004
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