microcystin

(redirected from Microcystins)

microcystin

(mī-krō-sis'tin),
Those compounds produced by Microcystis aeruginosa: potent hepatotoxins and probable tumor promoters.

microcystin

Any toxic, cyclic, non-ribosomal peptide produced by cyanobacteria, which has anticholinesterase activity or causes severe liver injury through DNA damage by activating endonucleases and inhibiting inhibit protein phosphatases types 1 and 2A. Topical exposure to microcystins causes skin and eye irritation, rhinorrhoea, vertigo and fatigue; parenteral exposure may cause death after initial exposure, often due to intrahepatic haemorrhage and hypovolemic shock. An epidemic of microcystin-related death occurred at a haemodialysis centre in Brazil due to impure water.

microcystin

a group of toxic cyclic decapeptides, the hepatotoxins in some cyanobacteria. See also microcystis, anabaena, gloeotrichia, oscillatoria, nostoc rivulare.
References in periodicals archive ?
Microcystins production and antibacterial activity of cyanobacterial strains of Synechocystis, Synechococcus and Romeria from water and coral reef organisms (Brazil)
Human intoxication by microcystins during renal dialysis treatment in Caruaru-Brazil.
Construction of the new plant producing drinking water Trauray II: execution studies, works for the construction of the new plant for producing drinking water Trauray II and commissioning; production capacity of 1000 m3 / h of treated water comprising: post dewatering at the foot of the dam Trauray and pumping raw water, water treatment plants and sludge, the water pumping treated, operating buildings, HHT and landscaping; The water treatment concerns: turbidity, TOC, cyanobacteria, microcystins, MIB, geosmin, ammonium, mineralization, pesticides, iron, manganese, bacteria.
15ng/g of microcystins (a group of hepatotoxic small polypeptides produced by several strains of cyanobacteria), which is within levels safe for human consumption according to World Health Organization standards.
Elevated levels of microcystins, liver toxins produced by Microcystis, forced city officials to distribute a "do not drink" advisory for nearly 500,000 residents.
Antioxidant response in liver of the phytoplanktivorous bighead carp (Aristichthys nobilis) intraperitoneallyinjected with extracted microcystins.
Others such as cyanobacteria can produce microcystins which can cause nausea and possibly liver damage while dynoflagelates can produce neurotoxins which affect the brain and nervous system.
In 2014, the water supply for more than 400,000 people in Toledo, Ohio, was declared unsafe because of the presence of microcystins, a toxin released by algae blooms in Lake Erie.
2005), while cyanobacterial microcystins cause mortalities both in European-and Spanish (Mauremys leprosa) pond turtles (Nasri et al.
Several genera of cyanobacteria, such as Microcystis, Anabaena, and Oscillatoria produce a family of microcystins of at least 50 tumor-promoting hepatotoxins [6, 10, 21].