Sulfated glycosaminoglycans in two hematophagous arthropod vectors of Chagas disease, Triatoma brasiliensis and Rhodnius prolixus (Hemiptera: Reduviidae)

2004 ◽  
Vol 139 (4) ◽  
pp. 631-635 ◽  
Author(s):  
Maisa L.S. Souza ◽  
Otilia Sarquis ◽  
Tais F. Gomes ◽  
Mônica F. Moreira ◽  
Marli M. Lima ◽  
...  
Keyword(s):  
Chagas Disease ◽  
Rhodnius Prolixus ◽  
Arthropod Vectors ◽  
Hematophagous Arthropod

scholarly journals Silencing the odorant receptor co-receptor RproOrco affects the physiology and behavior of the Chagas disease vector Rhodnius prolixus

2016 ◽  
Vol 69 ◽  
pp. 82-90 ◽  
Author(s):  
Thiago A. Franco ◽  
Daniele S. Oliveira ◽  
Monica F. Moreira ◽  
Walter S. Leal ◽  
Ana C.A. Melo
Keyword(s):  
Chagas Disease ◽  
Odorant Receptor ◽  
Rhodnius Prolixus ◽  
Disease Vector ◽  
And Behavior

Transformation of Rhodococcus rhodnii, a symbiont of the Chagas disease vector Rhodnius prolixus, with integrative elements of the L1 mycobacteriophage

2003 ◽  
Vol 3 (2) ◽  
pp. 103-109 ◽  
Author(s):  
Ellen M Dotson ◽  
Bonnie Plikaytis ◽  
Thomas M Shinnick ◽  
Ravi V Durvasula ◽  
Charles B Beard
Keyword(s):  
Chagas Disease ◽  
Rhodnius Prolixus ◽  
Disease Vector

scholarly journals High-Throughput Identification of the Rhodnius prolixus Midgut Proteome Unravels a Sophisticated Hematophagic Machinery

Proteomes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 16 ◽  
Author(s):  
Radouane Ouali ◽  
Karen Caroline Valentim de Brito ◽  
Didier Salmon ◽  
Sabrina Bousbata
Keyword(s):  
Digestive Tract ◽  
Chagas Disease ◽  
High Throughput ◽  
Control Strategies ◽  
Anterior Part ◽  
Rhodnius Prolixus ◽  
Etiologic Agent ◽  
Parasitic Infections ◽  
Developmental Cycle ◽  
Starting Point

Chagas disease is one of the most common parasitic infections in Latin America, which is transmitted by hematophagous triatomine bugs, of which Rhodnius prolixus is the vector prototype for the study of this disease. The protozoan parasite Trypanosoma cruzi, the etiologic agent of this disease, is transmitted by the vector to humans through the bite wound or mucosa. The passage of the parasite through the digestive tract of its vector constitutes a key step in its developmental cycle. Herewith, by a using high-throughput proteomic tool in order to characterize the midgut proteome of R. prolixus, we describe a set of functional groups of proteins, as well as the biological processes in which they are involved. This is the first proteomic analysis showing an elaborated hematophagy machinery involved in the digestion of blood, among which, several families of proteases have been characterized. The evaluation of the activity of cathepsin D proteases in the anterior part of the digestive tract of the insect suggested the existence of a proteolytic activity within this compartment, suggesting that digestion occurs early in this compartment. Moreover, several heat shock proteins, blood clotting inhibitors, and a powerful antioxidant enzyme machinery against reactive oxygen species (ROS) and cell detoxification have been identified. Highlighting the complexity and importance of the digestive physiology of insects could be a starting point for the selection of new targets for innovative control strategies of Chagas disease.

scholarly journals Structure Determination of Juvenile Hormone from Chagas Disease Vectors, Rhodnius prolixus and Triatoma infestans

2020 ◽  
Vol 49 (5) ◽  
pp. 538-541
Author(s):  
Keiji Matsumoto ◽  
Yoko Yasuno ◽  
Kohei Yasuda ◽  
Tsuyoshi Hayashi ◽  
Shin G. Goto ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Chagas Disease ◽  
Structure Determination ◽  
Rhodnius Prolixus ◽  
Triatoma Infestans ◽  
Disease Vectors ◽  
Chagas Disease Vectors

Green insecticide against Chagas disease: effects of essential oil from Myrciaria floribunda (Myrtaceae) on the development of Rhodnius prolixus nymphs

2019 ◽  
Vol 32 (1) ◽  
pp. 1-11
Author(s):  
Luis A.C. Tietbohl ◽  
Cicero B. Mello ◽  
Lucas R. Silva ◽  
Izadora B. Dolabella ◽  
Thais C. Franco ◽  
...  
Keyword(s):  
Essential Oil ◽  
Chagas Disease ◽  
Rhodnius Prolixus

Dehydration-Stress Resistance in Two Sister, Cryptic Rhodnius Species—Rhodnius prolixus and Rhodnius robustus Genotype I (Hemiptera: Reduviidae)

2019 ◽  
Vol 56 (4) ◽  
pp. 1019-1026
Author(s):  
Raíssa N Brito ◽  
Rita C M Souza ◽  
Fernando Abad-Franch
Keyword(s):  
Chagas Disease ◽  
Rhodnius Prolixus ◽  
Dehydration Stress ◽  
Mild Stress ◽  
Severe Dehydration ◽  
Egg Hatching ◽  
Genotype I ◽  
Additional Species ◽  
Crucial Difference ◽  
Rhodnius Robustus

Abstract Rhodnius prolixus Stål, a major Chagas disease vector, often colonizes in houses, whereas its sister species, Rhodnius robustus Larrousse genotype I, does not colonize in houses and has little medical relevance. Factors potentially underlying this crucial difference remain largely uncharted. The ‘microclimate-adaptation hypothesis’ notes that R. prolixus is adapted to the dry microclimate of small-crowned Copernicia palms, whereas R. robustus I exploits the high-moisture microclimate of large-crowned Attalea and Acrocomia. Hence, R. prolixus, but not R. robustus I, would be (pre)adapted to the relatively dry microclimate typical of man-made habitats. This hypothesis predicts that, while severe dehydration should harm both species similarly, R. prolixus should withstand moderate-to-mild dehydration stress better than R. robustus I. To test this prediction, we compared fitness metrics of genotyped R. prolixus and R. robustus I kept at 28°C and under severe (20% relative humidity, RH), moderate (40% RH), or mild dehydration stress (75% RH). Egg-hatching success increased with decreasing dehydration stress in R. robustus I (0% → 19% → 100%), but was high across treatments in R. prolixus (78% → 100% → 100%). Both species underwent high, early mortality under severe dehydration; under moderate and mild stress, R. prolixus experienced less mortality and survived longer than R. robustus I. Our results suggest that adaptation to distinct palm-crown microclimates may partly underlie the so far unexplained differences in house-colonization ability among Rhodnius Stål species. Experimental replication across additional species/populations will be required to further probe this adaptive hypothesis—which, if supported, may also provide insight into the likely responses of Chagas disease vectors to climate change.

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