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Approaches of Inducing Tolerance to Murine Schistosomiasis mansoni applying Biomphalaria and Bulinus Proteins.
Acta Parasitol
January 2025
Parasitology Department, Theodor Bilharz Research Institute, Giza, 12411, Egypt.
Background: The freshwater snails Biomphalaria alexandrina and Bulinus trancatus are key contributors to the transmission of S. mansoni and S.haematobium, respectively, for being their intermediate hosts.
View Article and Find Full Text PDFLocalization 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 PDFInfluence of Chlorella vulgaris and Pediastrum boryanum extracts carried on nanocellulose on the immune response of Biomphalaria alexandrina snails against Schistosoma mansoni infection.
Int J Biol Macromol
December 2024
Environmental Research Department, Theodor Bilharz Research Institute, Imbaba, Giza 12411, Egypt.
Continuous efforts are made to explore alternative methods for reducing Schistosomiasis. So, this study evaluated the effectiveness of Chlorella vulgaris and Pediastrum boryanum extracts carried on their nanocrystalline cellulose (NCC) as immunostimulants for Biomphalaria alexandrina snails against Schistosoma mansoni infection. The results showed that the lowest cercarial shedding/snail was 340 and 330 with 400 mg/L of C.
View Article and Find Full Text PDFOxidative stress, histopathological and genotoxicity of copper oxide nanoparticles in Biomphalaria alexandrina snail.
Sci Rep
October 2024
Environmental Research & Medical Malacology Department, Theodor Bilharz Research Institute (TBRI), Giza, Egypt.
Higher usage of copper oxide nanomaterials in industrial and biomedical fields may cause an increase of these nanoparticles in aquatic environments, which could have a detrimental ecological effect. Thus, the objective of this study was to evaluate the acute toxicity of copper oxide nanoparticles on the freshwater gastropod, Biomphalaria alexandrina. Transmission electron microscopy, x-ray diffraction analysis and UV-VIS spectrophotometer of CuO NPs revealed a typical TEM image and a single crystal structure with average crystallite size of approximately 40 nm also, a sharp absorption band was appeared.
View Article and Find Full Text PDFEvaluation of the Effects of Papain on Schistosoma mansoni: Miracidial Infection Capacity, Infection Prevalence, Cercarial Shedding and Molecular Changes in Biomphalaria alexandrina.
Acta Parasitol
December 2024
Biochemistry, Molecular Biology and Medicinal chemistry Department, Theodor Bilharz Research Institute, Giza, Egypt.
Purpose: The aim of the present study is to assess the molluscicidal, larvicidal and genotoxicological activities of papain and how it can affect the host-parasite interactions.
Methods: Toxicity of papain on snails by making series of concentrations to calculate LC, and then study its larvicide effect on the free larval stages of S. mansoni and infection rate of snails.
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