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Localization of Cholecystokinin/Sulfakinin Neuropeptides in Biomphalaria glabrata, an Intermediate Host for Schistosomiasis.
J Comp Neurol
January 2025
Institute of Neurobiology, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico.
Snails belonging to the genus Biomphalaria serve as obligatory intermediate hosts for the trematode Schistosoma mansoni, the causative agent for the most widespread form of schistosomiasis. The simpler nervous systems of gastropod molluscs, such as Biomphalaria, provide advantageous models for investigating neural responses to infection at the cellular and network levels. The present study examined neuropeptides related to cholecystokinin (CCK), a major multifunctional regulator of central nervous system (CNS) function in mammals.
View Article and Find Full Text PDFMolecular xenomonitoring of Schistosoma mansoni infections in Biomphalaria choanomphala at Lake Victoria, East Africa: Assessing roles of abiotic and biotic factors.
PLoS Negl Trop Dis
January 2025
School of Life Sciences, University of Nottingham, Nottingham, United Kingdom.
Lake Victoria is a well-known hot spot for intestinal schistosomiasis, caused by infection with the trematode Schistosoma mansoni. The snail intermediate hosts of this parasite are Biomphalaria snails, with Biomphalaria choanomphala being the predominant intermediate host within Lake Victoria. The prevalence of S.
View Article and Find Full Text PDFSymbiotic bacteria associated with entomopathogenic nematodes showed molluscicidal activity against Biomphalaria glabrata, an intermediate host of Schistosoma mansoni.
Parasit Vectors
December 2024
Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, 65000, Thailand.
Background: Biomphalaria glabrata acts as the intermediate host of schistosomes that causes human schistosomiasis. Symbiotic bacteria, Xenorhabdus and Photorhabdus associated with Steinernema and Heterorhabditis, produce secondary metabolites with several biological activities. Controlling B.
View Article and Find Full Text PDFDistribution of the schistosome intermediate snail host Biomphalaria pfeifferi in East Africa's river systems and the prevalence of Schistosoma mansoni infection.
Trans R Soc Trop Med Hyg
December 2024
School of Life Sciences, University of Nottingham, Nottingham NG7 2RD, UK.
Article Synopsis
- The study focuses on understanding the distribution and environmental factors affecting the Biomphalaria pfeifferi snail populations in East Africa, crucial for the transmission of schistosomiasis.
- Over a three-year period, malacological surveys were conducted at 172 locations across Kenya, Uganda, and Tanzania, identifying B. pfeifferi snails in 23 sites predominantly found in streams.
- The findings revealed a strong link between the snails' abundance and water temperature/depth, alongside a notable prevalence of Schistosoma mansoni infections, particularly in regions surrounding Lake Victoria in Kenya and various districts in Uganda and Tanzania.
A novel picorna-like virus in the flatworm Stenostomum leucops (Catenulida).
Arch Virol
November 2024
Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Av. Roraima 1000, Santa Maria, RS, CEP 97105.900, Brazil.
We present the genome sequence and organization and evidence of persistence of a new picorna-like virus infecting the flatworm Stenostomum leucops. The complete genome sequence belongs to a virus with a positive single-stranded RNA genome with two open reading frames (ORFs) flanked by untranslated regions and a polyadenylated C-terminus. The ORFs encode proteins with conserved motifs typical of members of the order Picornavirales.
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