Results 211 to 220 of about 23,887 (275)

Dual-Modal Split-Type Immunosensor for Sensitive Detection of Microcystin-LR: Enzyme-Induced Photoelectrochemistry and Colorimetry.

Analytical Chemistry, 2018
Microcystins, the lethal cyanotoxins from Microcystis aeruginosa, can inhibit the activity of protein phosphatase and promote liver tumors. Herein, a dual-modal split-type immunosensor was constructed to detect microcystin-LR (MC-LR), based on the ...
Jie Wei, Weidan Chang, Aori Qileng, Weipeng Liu, Yue Zhang, Shiya Rong, Hongtao Lei, Yingju Liu   +7 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

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

Accurate LC-MS analyses for microcystins using per-15N-labeled microcystins

Analytical and Bioanalytical Chemistry, 2011
Per-(15)N-labeled microcystins were prepared for use as surrogates for accurate liquid chromatography-mass spectrometry analysis. Two strains of Microcystis aeruginosa were cultured in (15)NO(3)-containing TS-15 medium. To change from the incorporation of (14)N to (15)N into all cell components, cells of Microcystis aeruginosa were precultured in Na(15)
Tomoharu, Sano, Hiroo, Takagi, Kimiyo, Nagano, Masataka, Nishikawa, Kunimitsu, Kaya   +4 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

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

Determination of Environmental Exposure to Microcystin and Aflatoxin as a Risk for Renal Function Based on 5493 Rural People in Southwest China

Environmental Science & Technology, 2016
Wenyi Liu, Ji-An Chen, Yang Luo
exaly   +2 more sources

Microcystin concentrations can be predicted with phytoplankton biomass and watershed morphology

INLAND WATERS, 2018
Anthropogenically derived increases in nutrient loads and climate change are considered the primary drivers of harmful cyanobacterial bloom expansion in freshwaters; however, watershed and within lake physical variables, as well as community interactions,
Nicole M. Hayes, M. Vanni
semanticscholar   +1 more source

Bioaccumulation of Microcystins in Lettuce

Journal of Phycology, 2012
The contamination of lettuce (Lactuca sativa L.) by water‐borne crude extracts of the cyanobacterium microcystin‐producing Microcystis aeruginosa (Kützing) Kützing was investigated. The aim of the study was to determine whether bioaccumulation of microcystins occurs in lettuce foliar tissue when sprayed with solutions containing microcystins at ...
Hereman, Talita Caroline, Bittencourt-Oliveira, Maria do Carmo   +1 more
openaire   +3 more sources

Effects of microcystins on fish

Environmental Toxicology and Chemistry, 2006
Abstract Microcystins (MCs) are hepatotoxic heptapeptides released into water during or on senescence of cyanobacterial blooms. This review details the different effects of the MCs on fish and discusses their potential consequences in aquatic food webs.
Malbrouck, Christelle, Kestemont, Patrick   +1 more
openaire   +3 more sources