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Exploring the immune interactions between Oncomelania hupensis and Schistosoma japonicum, with a cross-comparison of immunological research progress in other intermediate host snails.
Parasit Vectors
December 2023
Shulan International Medical College, Zhejiang Shuren University, Hangzhou, China.
Article Synopsis
- Schistosomiasis is a major neglected tropical disease that affects mostly economically underdeveloped tropical regions, making it a significant public health challenge.
- Effective control of the disease requires more than just medication; it involves managing the life cycle of intermediate host snails, which are crucial for the transmission of schistosomiasis.
- Research on the immune interactions between specific snail species (like B. glabrata and O. hupensis) and the schistosome parasites is key to developing environmentally friendly strategies for disease prevention and control.
Article Synopsis
- - Schistosoma mansoni, a blood fluke transmitted by snails, was brought to the Americas from Africa during the Trans-Atlantic slave trade, leading researchers to study its adaptation to local snail hosts and the effects on its population genetics.
- - Analysis of genetic variants from S. mansoni in both regions revealed a significant reduction in genetic diversity during colonization, yet no strong population bottleneck, indicating that S. mansoni adapted well to the new environment.
- - The study identified regions of the genome undergoing selection in the Americas, suggesting adaptations occurred during colonization, and inferred that unsampled central African populations were likely major sources for the S. mansoni found in Brazil.
Urban schistosomiasis: An ecological study describing a new challenge to the control of this neglected tropical disease.
Lancet Reg Health Am
April 2022
Schistosomiasis Reference Laboratory, Department of Parasitology, Aggeu Magalhães Institute, Fiocruz - Ministry of Health, Recife, PE, Brazil.
Background: Social and environmental vulnerabilities contribute to the persistence and increase of Schistosomiasis, which has been a public health problem in Brazil and worldwide. In this study, we aimed to monitor the entry, installation, and maintenance of schistosomiasis transmission in an urban area on the Brazilian coast over two decades ().
Methods: This population-based cross-sectional study was conducted in Porto de Galinhas, state of Pernambuco, Brazil, to investigate the dynamics of schistosomiasis transmission in the urban area.
Diminished adherence of Biomphalaria glabrata embryonic cell line to sporocysts of Schistosoma mansoni following programmed knockout of the allograft inflammatory factor.
Parasit Vectors
October 2020
Department of Microbiology, Immunology and Tropical Medicine, School of Medicine and Health Sciences, George Washington University, Washington, D.C., USA.
Background: Larval development in an intermediate host gastropod snail of the genus Biomphalaria is an obligatory component of the life-cycle of Schistosoma mansoni. Understanding of the mechanism(s) of host defense may hasten the development of tools that block transmission of schistosomiasis. The allograft inflammatory factor 1, AIF, which is evolutionarily conserved and expressed in phagocytes, is a marker of macrophage activation in both mammals and invertebrates.
View Article and Find Full Text PDFBiomphalaria glabrata infected with Angiostrongylus cantonensis: Proteomic changes in the snail host.
Acta Trop
December 2020
Biology Institute, Animal Biology Department, Campinas State University (UNICAMP) - SP, Brazil. Electronic address:
Angiostrongylus cantonensis is the main cause of human eosinophilic meningitis. Humans are accidental hosts, becoming infected due to ingestion of raw intermediate (snails and slugs) or paratenic hosts. Once ingested, the larvae migrate towards the brain where they die, causing the disease.
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