Results 201 to 210 of about 18,616 (256)

the toxicology of microcystins

Toxicon, 1998
Microcystins are a family of more than 50 structurally similar hepatotoxins produced by species of freshwater cyanobacteria, primarily Microcystis aeruginosa. They are monocyclic heptapeptides, characterised by some invariant amino acids, including one of unusual structure which is essential for expression of toxicity.
openaire   +2 more sources

Exposure routes and health effects of microcystins on animals and humans: A mini‐review

Toxicon, 2018
Microcystins (MCs) pollution has quickly risen in infamy and has become a major problem to public health worldwide. MCs are a group of monocyclic hepatotoxic peptides, which are produced by some bloom‐forming cyanobacteria in water.
I. Massey, Fei Yang, Zhen Ding, Shu Yang, Jian Guo, Clara Tezi, Muwaffak Al-Osman, Robert Boukem Kamegni, W. Zeng   +8 more
semanticscholar   +1 more source

Methods for determining microcystins (peptide hepatotoxins) and microcystin-producing cyanobacteria

Water Research, 2006
Episodes of cyanobacterial toxic blooms and fatalities to animals and humans due to cyanobacterial toxins (CBT) are known worldwide. The hepatotoxins and neurotoxins (cyanotoxins) produced by bloom-forming cyanobacteria have been the cause of human and animal health hazards and even death.
Lalita N, Sangolkar, Sarika S, Maske, Tapan, Chakrabarti   +2 more
openaire   +2 more sources

Microcystin-LR and chemically degraded microcystin-LR electrochemical oxidation

The Analyst, 2012
Microcystins (MCs) are cyclic hepatotoxic heptapeptides produced by certain strains of freshwater cyanobacteria toxic for humans and animals. The electrochemical behaviour of microcystin-LR (MC-LR) at a glassy carbon electrode (GCE) was investigated using cyclic voltammetry (CV), square wave voltammetry (SWV) and differential pulse voltammetry (DPV ...
Ilanna C, Lopes, Paulina V F, Santos, Victor C, Diculescu, Francisco M P, Peixoto, Mário C U, Araújo, Auro A, Tanaka, Ana Maria, Oliveira-Brett   +6 more
openaire   +2 more sources

Distribution of Microcystin-Producing and Non-Microcystin-Producing Microcystis sp. in European Freshwater Bodies: Detection of Microcystins and Microcystin Genes in Individual Colonies

Systematic and Applied Microbiology, 2004
Microcystis is a well-known cyanobacterial genus frequently producing hepatotoxins named microcystins. Toxin production is encoded by microcystin genes (mcy). This study aims (i) to relate the mcy occurrence in individual colonies to the presence of microcystin, (ii) to assess whether morphological characteristics (morphospecies) are related to the ...
Lorena, Via-Ordorika, Jutta, Fastner, Rainer, Kurmayer, Michael, Hisbergues, Elke, Dittmann, Jiri, Komarek, Marcel, Erhard, Ingrid, Chorus   +7 more
openaire   +2 more sources

Decomposition of Microcystin-LR, Microcystin-RR, and Microcystin-YR in Water Samples Submitted to in Vitro Dissolution Tests

Journal of Agricultural and Food Chemistry, 2004
The presence of cyanobacterial toxins (microcystins) in waters and food increases the risk of toxicity to animal and human health. These toxins can degrade in the human gastrointestinal tract before they are absorbed. To evaluate this possible degradation, water samples spiked with known concentrations of microcystins MC-LR, MC-RR, and MC-YR, which are
Isabel M, Moreno, Judith, Maraver, Esther C, Aguete, Manel, Leao, Ana, Gago-Martínez, Ana M, Cameán   +5 more
openaire   +2 more sources

Microcystins activate nuclear factor erythroid 2-related factor 2 (Nrf2) in human liver cells in vitro – Implications for an oxidative stress induction by microcystins

Toxicon, 2017
Microcystins, a potential threat to drinking water quality, are hepatotoxic but it has remained unclear if microcystins induce oxidative stress. We investigated if four microcystins could activate the Nrf2 pathway, a regulator of oxidative stress ...
Johan Lundqvist, Heidi Pekar, Agneta Oskarsson   +2 more
exaly   +2 more sources

Bioaccumulation of microcystins in seston, zooplankton and fish: A case study in Lake Zumpango, Mexico.

Environmental Pollution, 2019
Cyanotoxins from toxic blooms in lakes or eutrophic reservoirs are harmful to several organisms including zooplankton, which often act as vectors of these secondary metabolites, because they consume cyanobacteria, bioaccumulate the cyanotoxins and pass ...
Cesar Alejandro Zamora-Barrios, S. Nandini, S. S. S. Sarma   +2 more
semanticscholar   +1 more source

Pyrolytic behaviour of microcystins and microcystin-spiked algal blooms

Journal of Analytical and Applied Pyrolysis, 2005
Peer ...
Cameán Fernández, A. M., Moreno Navarro, I., Verdejo Robles, Trinidad, González-Vila, Francisco Javier, González-Pérez, José Antonio   +4 more
openaire   +2 more sources

Assessing the toxicity of cell-bound microcystins on freshwater pelagic and benthic invertebrates.

Ecotoxicology and Environmental Safety, 2019
Cyanobacterial harmful algal blooms dominated by Microcystis frequently produce microcystins, a family of toxins capable of inflicting harm to pelagic and benthic freshwater invertebrates.
R. S. Shahmohamadloo, D. Poirier, Xavier Ortiz Almirall, S. Bhavsar, P. Sibley   +4 more
semanticscholar   +1 more source