Results 91 to 100 of about 4,492 (178)

Comparison of hemocytes of 5th-instar nymphs of Rhodnius prolixus (Stal) and Rhodnius robustus (Larousse 1927), before and after molting

Revista de la Facultad de Medicina, 2015
Background. The immune response of insects involves humoral factors and cellular elements known as hemocytes. There are different reports that explore the response of hemocytes to infections, but the effect that molting has on this response has not been
Elizabeth Ruiz, Myriam Consuelo López, Favio Aurelio Rivas, Ángel Yovanny Sánchez, Ligia Inés Moncada   +4 more
doaj   +1 more source

In vitro Trypanocidal Activity, Genomic Analysis of Isolates, and in vivo Transcription of Type VI Secretion System of Serratia marcescens Belonging to the Microbiota of Rhodnius prolixus Digestive Tract

Frontiers in Microbiology, 2019
Serratia marcescens is a bacterium with the ability to colonize several niches, including some eukaryotic hosts. S. marcescens have been recently found in the gut of hematophagous insects that act as parasite vectors, such as Anopheles, Rhodnius, and ...
F. F. da Mota, D. P. Castro, C. S. Vieira, M. Gumiel, Júlia Peixoto de Albuquerque, N. Carels, P. Azambuja   +6 more
semanticscholar   +1 more source

Evaluation of two candidate molecules—TCTP and cecropin—on the establishment of Trypanosoma brucei gambiense into the gut of Glossina palpalis gambiensis

Insect Science, Volume 32, Issue 5, Page 1747-1760, October 2025.
This study investigates the potential of enhancing the resistance of Glossina palpalis gambiensis to Trypanosoma brucei gambiense to mitigate the transmission of Human African Trypanosomiasis. We successfully cloned genes encoding proteins of interest in Sodalis strains, resulting in recombinant Sodalis (recSodalis) that were micro‐injected into the L3
François Sougal Ngambia Freitas, Linda De Vooght, Flobert Njiokou, Jan Van Den Abeele, Géraldine Bossard, Bernadette Tchicaya, Rosa Milagros Corrales, Sophie Ravel, Anne Geiger, David Berthier‐Teyssedre   +9 more
wiley   +1 more source

Generalist host species drive Trypanosoma cruzi vector infection in oil palm plantations in the Orinoco region, Colombia

Parasites & Vectors, 2019
Background Oil palm plantation establishment in Colombia has the potential to impact Chagas disease transmission by increasing the distribution range of Rhodnius prolixus.
Diana Erazo, Nicole L. Gottdenker, Camila González, Felipe Guhl, Monica Cuellar, Troy J. Kieran, Travis C. Glenn, Juan D. Umaña, Juan Cordovez   +8 more
doaj   +1 more source

Novel repellents for the blood-sucking insects Rhodnius prolixus and Triatoma infestans, vectors of Chagas disease

Parasites & Vectors, 2019
Studying the behavioral response of blood-sucking disease-vector insects to potentially repellent volatile compounds could shed light on the development of new control strategies. Volatiles released by human facial skin microbiota play different roles in
Melanie Ramírez, M. Ortiz, P. Guerenstein, Jorge Molina   +3 more
semanticscholar   +1 more source

The loss of the urea cycle and ornithine metabolism in different insect orders: An omics approach

Insect Molecular Biology, Volume 34, Issue 5, Page 632-644, October 2025.
Among urea cycle enzymes, only the nitric oxide synthase gene is universally present across insect genomes. All Hemiptera species lack the enzymes needed to convert citrulline to arginine, and some also lack the pathway from arginine to ornithine. Putrescine and spermidine synthesis is conserved in all insects, but aphids lack the capability to produce
Jessica Cristina Silva Martins, Héctor Antônio Assunção Romão, Carolina Kurotusch Canettieri, Amanda Caetano Cercilian, Patrícia Rasteiro Ordiale Oliveira, Clelia Ferreira, Walter R. Terra, Renata de Oliveira Dias   +7 more
wiley   +1 more source

The effect of temperature increase on the development of Rhodnius prolixus and the course of Trypanosoma cruzi metacyclogenesis

PLoS Neglected Tropical Diseases, 2018
The increase in the global land temperature, expected under predictions of climate change, can directly affect the transmission of some infectious diseases, including Chagas disease, an anthropozoonosis caused by Trypanosoma cruzi and transmitted by ...
Laura D. Tamayo, F. Guhl, G. Vallejo, J. Ramírez   +3 more
semanticscholar   +1 more source

Morin hydrate reduces survival and fertility, delays development and weakens lipid reserves in Aedes aegypti

Medical and Veterinary Entomology, Volume 39, Issue 3, Page 592-602, September 2025.
Morin hydrate promoted mortality and reduced the rate of pupation and egg laying in Aedes aegypti larvae that survive treatment. Morin hydrate reduces the levels of triacylglycerol, the main lipid reserve in A. aegypti larvae. The expression of proteins involved in lipogenesis and lipolysis was downregulated and upregulated, respectively, in larvae ...
Luan Valim dos Santos, Elaine Rodrigues Miranda Nery da Silva, Matheus Silva Caiado, Renan Albuquerque Camasmie, Herbert Marcusi Souza de Agustini, Raquel do Nascimento de Souza, Bruno Guimarães Marinho, Rosane Nora Castro, Mario Geraldo de Carvalho, Emerson Guedes Pontes   +9 more
wiley   +1 more source

Rhodnius barretti, a new species of Triatominae (Hemiptera: Reduviidae) from western Amazonia

Memorias do Instituto Oswaldo Cruz, 2013
Rhodnius barretti , a new triatomine species, is described based on adult specimens collected in rainforest environments within the Napo ecoregion of western Amazonia (Colombia and Ecuador). R. barretti resembles Rhodnius robustus s.l.
Fernando Abad-Franch, Marcio G Pavan, Nicolas Jaramillo-O, Francisco S Palomeque, Carolina Dale, Duverney Chaverra, Fernando A Monteiro   +6 more
doaj   +1 more source

Extracellular vesicles isolated from Trypanosoma cruzi affect early parasite migration in the gut of Rhodnius prolixus but not in Triatoma infestans

Memórias do Instituto Oswaldo Cruz, 2019
The protozoan Trypanosoma cruzi has the ability to spontaneously secrete extracellular vesicles (EVs). In this paper, T. cruzi EVs derived from epimastigote forms were evaluated during interaction with triatomine bugs Rhodnius prolixus and Triatoma ...
Larissa F Paranaiba, A. Guarneri, A. Torrecilhas, M. N. Melo, R. Soares   +4 more
semanticscholar   +1 more source