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The goal of this study was to determine the levels of S. mansoni antigen in different liver fibrosis stages with chronic hepatitis C (CHC) Egyptian patients. A total of 174 CHC patients showing HCV-NS4 antigen and HCV- RNA in their sera were included. S. mansoni antigen was detected in serum using Western blot and ELISA. The levels of interferon-γ (IFN- γ) were determined using ELISA. The 50 kDa S. mansoni antigen discriminated patients infected with S. mansoni from healthy individuals with 0.93 area under curve (AUC), 92% sensitivity, and 97% specificity. The level of S. mansoni antigen (μg/ml) was significantly (P < 0.0001) increased with the progression of liver fibrosis stages (26.9 ± 17.5 in F1, 42.1 ± 25.2 in F2, 49.8 ± 30.3 in F3 and 62.2 ± 26.3 μg/mL in F4 liver cirrhosis), 26.9 ± 17.59 in significant fibrosis (F2-F4); 51.2 ± 27.9 in advanced fibrosis (F3-F4). A significant correlation (r = 0.506; P < 0.0001) was shown between the levels of the S. mansoni antigen and the HCV-NS4 antigen. In conclusion, the presence of S. mansoni antigen in different liver fibrosis stages of CHC patients confirming that concomitant schistosome infection aggravates liver disease.
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http://dx.doi.org/10.1080/15321819.2015.1135163 | DOI Listing |
Despite the global burden of helminth infections, no human vaccines have yet been licensed against these parasites. This study explored the development and evaluation of mRNA vaccine candidates targeting tetraspanin-2 ( -TSP-2), an antigen currently under evaluation as a protein vaccine. We designed constructs encoding either full-length -TSP-2, or its large extracellular loop (EC2) domain in secretory, membrane-anchored, or cytosolic forms.
View Article and Find Full Text PDFPLoS Negl Trop Dis
September 2025
School of Biodiversity, One Health and Veterinary Medicine, University of Glasgow, Glasgow, United Kingdom.
Direct morbidity assessments are rarely included in monitoring and evaluation of Schistosoma mansoni mass drug administration programmes. This is despite morbidity reduction being the leading objective of control and elimination as a public health problem in the World Health Organization (WHO) targets. Instead, the number of eggs-per-gram (EPG) of faeces are used as a morbidity proxy.
View Article and Find Full Text PDFbioRxiv
August 2025
Department of Biology, University of Wisconsin-Eau Claire, Eau Claire, WI.
Schistosomiasis is a neglected tropical disease caused by human-infective schistosomes (Trematoda: ). Intestinal schistosomiasis in sub-Saharan Africa and the Neotropics is caused primarily by and is transmitted by several planorbid snail species. Adult male and female parasites in the definitive mammalian host pair and reside in the mesenteric vasculature; females lay eggs that traverse the intestinal wall to be excreted, but a significant proportion become trapped in host tissues, especially the liver, eliciting granulomatous immune responses that underlie most disease pathology.
View Article and Find Full Text PDFPLoS Negl Trop Dis
August 2025
The END Fund, New York, United States of America.
Background: Soil-transmitted helminthiasis (STH) and schistosomiasis (SCH) remain significant public health challenges in Rwanda, affecting individuals across all age groups. Despite ongoing mass drug administration (MDA) efforts, updated data on prevalence and risk factors are crucial for effective control and elimination strategies. This study reassessed the prevalence of STH and SCH in both children and adults in Rwanda, along with their associated risk factors, to guide control efforts.
View Article and Find Full Text PDFBackground: Effective detection of Schistosoma mansoni is crucial for the control and management of the infection. This study aimed to evaluate the field performance of three diagnostic methods-point-of-care circulating cathodic antigen (POC-CCA) assay, Kato-Katz (KK) technique, and real-time polymerase chain reaction (RT-PCR)-for detecting S. mansoni infection in different transmission settings across northwest Ethiopia.
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