3 results match your criteria: "Reims Champagne-Ardenne University (URCA)[Affiliation]"

This study aimed to combine cellular and molecular analyses for better detail the effects of various stresses on a sentinel species of freshwater invertebrate. For this purpose, the hemocytes of the zebra mussel, Dreissena polymorpha, were exposed to different stresses at two different intensities, high or low: chemical (cadmium and ionomycin), physical (ultraviolet B), or biological ones (Cryptosporidium parvum and Toxoplasma gondii). After exposure, flow cytometry and droplet digital PCR analyses were performed on the same pools of hemocytes.

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Low density lipoprotein receptor related protein-1 (LRP-1) is a large ubiquitous endocytic receptor mediating the clearance of various molecules from the extracellular matrix. Several studies have shown that LRP-1 plays crucial roles during tumorigenesis functioning as a main signal pathway regulator, especially by interacting with other cell-surface receptors. Discoïdin Domain Receptors (DDRs), type I collagen receptors with tyrosine kinase activity, have previously been associated with tumor invasion and aggressiveness in diverse tumor environments.

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First evidence of cytotoxic effects of human protozoan parasites on zebra mussel (Dreissena polymorpha) haemocytes.

Environ Microbiol Rep

June 2019

UMR-I02 SEBIO (Stress Environnementaux et Biosurveillance des milieux aquatiques), Reims Champagne-Ardenne University (URCA), Campus Moulin de la Housse, 51687, Reims, France.

Article Synopsis
  • The study investigates how human protozoan parasites affect immune cells (haemocytes) in bivalves, specifically zebra mussels.
  • It evaluates the cytotoxic effects of Toxoplasma gondii, Giardia duodenalis, and Cryptosporidium parvum on these immune cells.
  • Results indicated that the larger protozoa were cytotoxic to haemocytes and led to the formation of aggregates, marking the initial observation of interactions between these parasites and haemocytes.
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