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  • Title: Ultrastructural changes of kidney in Schistosoma mansoni-infected mice.
    Author: Eid RA, Al-Shraim M, El-Sayed F, Radad K.
    Journal: Ultrastruct Pathol; 2017; 41(5):320-326. PubMed ID: 28796565.
    Abstract:
    Schistosomiasis is the second threatening parasitic disease after malaria and among Schistosoma spp., Schistosoma mansoni (S. mansoni) affects about 100 million people in tropic regions in Africa and South America. The current study was carried out to investigate ultrastructural changes of the kidney in mice infected with cercariae of S. mansoni, in which 20 Swiss albino mice of 60-day-old were assigned into two groups (10 each). Control group received 1 ml normal saline by intraperitoneal route. Model group were intraperitoneally infected with 1 ml normal saline containing 40 cercariae of S. mansoni/mouse. After 60 days of infection, specimens from the kidneys of both control and infected mice were obtained and processed for transmission electron microscopy (TEM) examination. The main ultrastructural changes were observed in both glomeruli and tubules. Glomerular findings included irregular thickening and splitting of the glomerular basement membrane (GBM), flattening and effacement of the foot processes of podocytes, and proliferation of mesangial cells. Tubular changes were in the form of swelling, atrophy and vacuolation of tubular epithelial cells, and presence of autophagic vacuoles. In conclusion, adopting TEM shows a number of ultrastructural changes in the kidneys of mice infected with cercariae of S. mansoni, most notably thickening and splitting of GBM and flattening and effacement of foot processes of podocytes and tubular autophagic vacuoles. These changes are still unraveled well in the literature.
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