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Common Bed Bugs: Non-Viable Hosts for Parasites.
Cells
December 2024
Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada.
The hemoflagellate parasite is transmitted by triatomine kissing bugs and may co-infect humans together with its Chagas disease-causing congener . Using real-time quantitative polymerase chain reaction (RT-qPCR) and antimicrobial assays, we studied () the temporal and spatial distribution of in common bed bugs, , following oral ingestion and hemocoelic injection of and () the immune responses of bed bugs induced by infections. Irrespective of infection mode, no live were present in the bed bugs' hemolymph, salivary glands, or feces.
View Article and Find Full Text PDFUnusual frequency of Trypanosoma cruzi DTU TcI and predominance of hybrid lineages in Triatoma infestans before and after control interventions in the Argentinian Chaco.
Acta Trop
January 2025
Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Laboratorio de Eco-Epidemiología. Intendente Güiraldes 2160, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires. Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina. Electronic address:
Transmission of Trypanosoma cruzi involves diverse hosts, vectors and parasitic genotypes, in different environments. In recent decades, the distribution of T. cruzi has altered due to urbanization of affected people and vectors.
View Article and Find Full Text PDFBeyond blood: the flexibility of triatomine bug food search and recognition.
Curr Opin Insect Sci
December 2024
Universidad de Buenos Aires, Facultad Ciencias Exactas y Naturales, Departamento Biodiversidad y Biología Experimental, Laboratorio de Neuroetología de Insectos, ETI2, Instituto Biodiversidad y Biología Experimental y Aplicada, IBBEA, CONICET-UBA, Buenos Aires, Argentina.
Article Synopsis
- - Kissing bugs are effective blood-feeders, using cues like carbon dioxide and heat to locate their warm-blooded hosts, but recent studies show they may also feed on cold-blooded animals and insects.
- - The bugs utilize various sensory signals, such as temperature changes and odors, for feeding decisions, and are now found to consume plant or fruit fluids, indicating a more diverse diet than previously thought.
- - Future research should explore how kissing bugs sense and react to different sensory inputs from various hosts and plant sources, which could inform strategies for surveillance and control, as well as shed light on their evolutionary transition from predatory to blood-feeding behavior.
Revisiting the development of Trypanosoma rangeli in the vertebrate host.
Mem Inst Oswaldo Cruz
November 2024
Fundação Oswaldo Cruz-Fiocruz, Instituto René Rachou, Grupo de Comportamento de Vetores e Interação com Patógenos, Belo Horizonte, MG, Brasil.
Background: Trypanosoma rangeli is a haemoflagellate parasite that infects triatomine bugs and mammals in South and Central America. Trypanosoma cruzi, the etiological agent of Chagas disease, has a partially overlapping geographical distribution with T. rangeli, that leads to mixed human infections and cross-reactivity in immunodiagnosis.
View Article and Find Full Text PDFα-Glucosidase isoform G contributes to heme detoxification in and its knockdown affects metacyclogenesis.
Curr Res Insect Sci
October 2024
Laboratório Integrado de Biociências Translacionais (LIBT), NUPEM/UFRJ, Macaé, RJ, Brazil.
Article Synopsis
- * This study explores the role of the enzyme α-glucosidase isoform G (Rp-αGluG) in heme detoxification, revealing that its knockdown leads to reduced hemozoin production and impacts the insect’s overall health, including lower egg production and hatching rates.
- * The findings emphasize the significant role of Rp-αGluG in the insect's digestion, reproduction, and life cycle, offering insights for developing new strategies to disrupt he
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