Genotyping of Trypanosoma cruzi DTUs and Trypanosoma rangeli genetic groups in experimentally infected Rhodnius prolixus by PCR-RFLP

Acta Tropica ◽  
2016 ◽  
Vol 156 ◽  
pp. 115-121 ◽  
Author(s):  
Amanda R.N. Sá ◽  
Greicy B.M. Dias ◽  
Karen Y. Kimoto ◽  
Mário Steindel ◽  
Edmundo C. Grisard ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Rhodnius Prolixus ◽  
Trypanosoma Rangeli ◽  
Genetic Groups ◽  
Pcr Rflp

scholarly journals Effects of Infection by Trypanosoma cruzi and Trypanosoma rangeli on the Reproductive Performance of the Vector Rhodnius prolixus

PLoS ONE ◽  
2014 ◽  
Vol 9 (8) ◽  
pp. e105255 ◽  
Author(s):  
Maria Raquel Fellet ◽  
Marcelo Gustavo Lorenzo ◽  
Simon Luke Elliot ◽  
David Carrasco ◽  
Alessandra Aparecida Guarneri
Keyword(s):  
Trypanosoma Cruzi ◽  
Reproductive Performance ◽  
Rhodnius Prolixus ◽  
Trypanosoma Rangeli

scholarly journals A darker chromatic variation of Rhodnius pallescens infected by specific genetic groups of Trypanosoma rangeli and Trypanosoma cruzi from Panama

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Azael Saldaña ◽  
Ana María Santamaría ◽  
Vanessa Pineda ◽  
Vanessa Vásquez ◽  
Nicole L. Gottdenker ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Trypanosoma Rangeli ◽  
Genetic Groups ◽  
Rhodnius Pallescens

scholarly journals Towards an understanding of the interactions of Trypanosoma cruzi and Trypanosoma rangeli within the reduviid insect host Rhodnius prolixus

2005 ◽  
Vol 77 (3) ◽  
pp. 397-404 ◽  
Author(s):  
Patrícia Azambuja ◽  
Norman A. Ratcliffe ◽  
Eloi S. Garcia
Keyword(s):  
Trypanosoma Cruzi ◽  
Developmental Stages ◽  
Rhodnius Prolixus ◽  
Parasite Development ◽  
Insect Vector ◽  
Defense System ◽  
Parasite Strain ◽  
Trypanosoma Rangeli ◽  
Physiological Processes ◽  
Prophenoloxidase System

This review outlines aspects on the developmental stages of Trypanosoma cruzi and Trypanosoma rangeli in the invertebrate host, Rhodnius prolixus. Special attention is given to the interactions of these parasites with gut and hemolymph molecules and the effects of the organization of midgut epithelial cells on the parasite development. The vector insect's permissiveness to T. cruzi, which develops in the vector gut, largely depends on the host nutritional state, the parasite strain and the molecular interactions with trypanolytic compounds, lectins and resident bacteria in the gut. T. rangeli invades the hemocoel and once in the hemolymph, can be recognized and activates the defense system of its insect vector, i.e., the prophenoloxidase system, phagocytosis, hemocyte microaggregation, superoxide and nitric oxide activity and the eicosanoid biosynthesis pathway. Taken together, these findings not only provide a better understanding of the interactions parasite - insect vector, but also offer new insights into basic physiological processes involved in the parasites transmission.

Trypanosoma cruzi and Trypanosoma rangeli: Interplay with Hemolymph Components of Rhodnius prolixus

1995 ◽  
Vol 65 (3) ◽  
pp. 261-268 ◽  
Author(s):  
C.B. Mello ◽  
E.S. Garcia ◽  
N.A. Ratcliffe ◽  
P. Azambuja
Keyword(s):  
Trypanosoma Cruzi ◽  
Rhodnius Prolixus ◽  
Trypanosoma Rangeli

Trypanosoma cruzi–Trypanosoma rangeli co-infection ameliorates negative effects of single trypanosome infections in experimentally infected Rhodnius prolixus

Parasitology ◽  
2016 ◽  
Vol 143 (9) ◽  
pp. 1157-1167 ◽  
Author(s):  
JENNIFER K. PETERSON ◽  
ANDREA L. GRAHAM ◽  
RYAN J. ELLIOTT ◽  
ANDREW P. DOBSON ◽  
OMAR TRIANA CHÁVEZ
Keyword(s):  
Treatment Group ◽  
Trypanosoma Cruzi ◽  
Single Species ◽  
Rhodnius Prolixus ◽  
Trypanosoma Rangeli ◽  
Negative Effects ◽  
Hazard Ratios ◽  
Triatomine Species ◽  
Survival And Reproduction ◽  
And Control

SUMMARYTrypanosoma cruzi, causative agent of Chagas disease, co-infects its triatomine vector with its sister species Trypanosoma rangeli, which shares 60% of its antigens with T. cruzi. Additionally, T. rangeli has been observed to be pathogenic in some of its vector species. Although T. cruzi–T. rangeli co-infections are common, their effect on the vector has rarely been investigated. Therefore, we measured the fitness (survival and reproduction) of triatomine species Rhodnius prolixus infected with just T. cruzi, just T. rangeli, or both T. cruzi and T. rangeli. We found that survival (as estimated by survival probability and hazard ratios) was significantly different between treatments, with the T. cruzi treatment group having lower survival than the co-infected treatment. Reproduction and total fitness estimates in the T. cruzi and T. rangeli treatments were significantly lower than in the co-infected and control groups. The T. cruzi and T. rangeli treatment group fitness estimates were not significantly different from each other. Additionally, co-infected insects appeared to tolerate higher doses of parasites than insects with single-species infections. Our results suggest that T. cruzi–T. rangeli co-infection could ameliorate negative effects of single infections of either parasite on R. prolixus and potentially help it to tolerate higher parasite doses.

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