Publications by authors named "Emanuele Pesenti"

Article Synopsis
  • Radiocystis fernandoi produces microcystin, a harmful toxin that damages the liver in tropical fish, with varying effects depending on exposure duration.
  • The study found that acute exposure led to decreased activity in antioxidant enzymes, while subchronic exposure showed some recovery in liver function despite increased DNA damage.
  • Histopathological changes in the liver indicated dysfunction in response to both acute and subchronic microcystin exposure, with different responses to specific types of microcystins.
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The cyanobacterium Radiocystis fernandoi has been frequently identified in cyanobacterial blooms in Brazil. Recently, R. fernandoi strain R28, which produces microcystin (MC)-RR and MC-YR, was isolated from the Furnas reservoir, Minas Gerais, Brazil.

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The toxicity of titanium dioxide nanoparticles (TiO -NP) in the blood, liver, muscle, and brain of a Neotropical detritivorous fish, Prochilodus lineatus, was tested. Juvenile fish were exposed to 0, 1, 5, 10, and 50 mg L of TiO -NP for 48 hours (acute exposure) or 14 days (subchronic exposure) to evaluate changes in hematology, red blood cell (RBC) genotoxicity/mutagenicity, liver function (reactive oxygen species (ROS) production, antioxidant responses, detoxification, and histopathology), acetylcholinesterase (AChE) activity in muscles and brain, and Ti bioaccumulation. TiO -NP did not cause genetic damage to RBC, but acutely decreased white blood cells (WBC) and increased monocytes.

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