Prevalence And Intensity Of Infection, Metacyclogenesis And Nuclear Phenotypes In Panstrongylus Megistus (burmeister, 1835) After Ingestion Of Trypanosoma Cruzi (chagas, 1909) Ii And Subjection To Heat Shock [prevalência E Intensidade De Infecção, Metaciclogênese E Fenótipos Nucleares Em Panstrongylus Megistus (burmeister, 1835) Após Ingestão De Trypanosoma Cruzi (chagas, 1909) Ii E Choque De Temperatura]

dc.creatorGarcia S.L.
dc.creatorRodrigues V.L.C.C.
dc.creatorGarcia N.L.
dc.creatorMello M.L.S.
dc.date2011
dc.date2015-06-30T20:18:07Z
dc.date2015-11-26T14:47:51Z
dc.date2015-06-30T20:18:07Z
dc.date2015-11-26T14:47:51Z
dc.date.accessioned2018-03-28T21:58:29Z
dc.date.available2018-03-28T21:58:29Z
dc.identifier
dc.identifierBrazilian Journal Of Biology. , v. 71, n. 2, p. 491 - 500, 2011.
dc.identifier15196984
dc.identifier10.1590/S1519-69842011000300020
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-79960400217&partnerID=40&md5=73387d94701dba988fcf4e0a12c06263
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/107498
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/107498
dc.identifier2-s2.0-79960400217
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1253436
dc.descriptionThis study aimed to contribute to our knowledge of the parasite-vector interaction associated with Trypanosoma cruzi (Chagas, 1909) infection in Panstrongylus megistus (Burmeister, 1835), an important vector of Chagas' disease in Brazil. The prevalence and intensity of T. cruzi infection, the incidence of metacyclogenesis and the frequency of nuclear phenotypes in Malpighian tubules were investigated in nymphs of P. megistus, reared at 28 °C and subjected to heat shock (40 °C, 1 hour) two days after infection with T. cruzi II (Y strain). Following the 45-day post-infection period, the frequency of epimastigotes was much higher than that of trypomastigotes in both heat-shocked and non-shocked insects, and the prevalence of infection was not altered by heat shock. Fewer epimastigotes and trypomastigotes were found in the infected insects subjected to the heat shock, indicating that the multiplication and metacyclogenesis of the parasites were affected by the stress. In infected specimens heat shock promoted an increased frequency of cell nuclei with heterochromatin decondensation, a cell survival response to stress, and did not affect insect survival. The effects of infection and heat shock, especially on the multiplication and metacyclogenesis of T. cruzi, and the observed resistance to heat shock developed by P. megistus nymphs are suggestive that they should be considered when adequate conditions for rearing these infected insects in the laboratory are pursued.
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dc.description491
dc.description500
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dc.languageen
dc.languagept
dc.publisher
dc.relationBrazilian Journal of Biology
dc.rightsaberto
dc.sourceScopus
dc.titlePrevalence And Intensity Of Infection, Metacyclogenesis And Nuclear Phenotypes In Panstrongylus Megistus (burmeister, 1835) After Ingestion Of Trypanosoma Cruzi (chagas, 1909) Ii And Subjection To Heat Shock [prevalência E Intensidade De Infecção, Metaciclogênese E Fenótipos Nucleares Em Panstrongylus Megistus (burmeister, 1835) Após Ingestão De Trypanosoma Cruzi (chagas, 1909) Ii E Choque De Temperatura]
dc.typeArtículos de revistas


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