Effects of azadirachtin on Rhodnius prolixus: immunity and trypanosoma interaction
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چکیده
منابع مشابه
Azadirachtin-Induced Sterilization in Mature Females of Rhodnius prolixus
The effects of azadiraehtin A , given oral ly, on the reproduct ion of mature females of Rhodnius prolixus were studied. Azadiraeht in A caused a reduction in oocyte growth and consequently in the egg product ion in a dose-dependent manner. Eggs layed had no alteration in their viabil it ies. A significant correlat ion between these effects and the titers of both vi tel logenin in the haemolymp...
متن کاملMetalloproteases in Trypanosoma rangeli-infected Rhodnius prolixus.
Protease activities in the haemolymph and fat body in a bloodsucking insect, Rhodnius prolixus, infected with Trypanosoma rangeli, were investigated. After SDS-polyacrylamide gel electrophoresis containing gelatin as substrate, analysis of zymograms performed on samples of different tissues of controls and insects inoculated or orally infected with short or long epimastigotes of T. rangeli, dem...
متن کاملImmunity in Rhodnius prolixus: trypanosomatid-vector interactions.
Many insects respond to a bacterial infection with the stimulation of distinct cellular and humoral defense system, that cooperate in a more or less integrated way to decrease the chance of microorganisms becoming pathogens. Cellular reactions include phagocytosis, nodule formation, and in some cases encapsulation and other factors related to immune system as prophenoloxidase (proPO) system, le...
متن کاملChagas' disease and its insect vector. Effect of azadirachtin A on the interaction of a triatomine host (Rhodnius prolixus) and its parasite (Trypanosoma cruzi).
The ED50 for moulting inhibition by injected azadirachtin A is for fourth instar larvae of all the triatomines, Triatoma vitticepes, T. pseudomaculata, T. maculata, T. brasiliensis, T. lecticularis, T. matogrossensis, T. infestans, Rhodnius prolixus. R. neglectus, R. robustus, Panstrongylus megistus, and P. herrera in the range of 10-25 ng/larva. In Rhodnius prolixus, the survival of T. cruzi w...
متن کاملEffects of Infection by Trypanosoma cruzi and Trypanosoma rangeli on the Reproductive Performance of the Vector Rhodnius prolixus
The insect Rhodnius prolixus is responsible for the transmission of Trypanosoma cruzi, which is the etiological agent of Chagas disease in areas of Central and South America. Besides this, it can be infected by other trypanosomes such as Trypanosoma rangeli. The effects of these parasites on vectors are poorly understood and are often controversial so here we focussed on possible negative effec...
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ژورنال
عنوان ژورنال: Memórias do Instituto Oswaldo Cruz
سال: 1992
ISSN: 0074-0276
DOI: 10.1590/s0074-02761992000900009