Results 181 to 190 of about 11,761 (211)

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
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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.
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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
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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
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Microcystin Dynamics in Aquatic Organisms

Journal of Toxicology and Environmental Health, Part B, 2009
Eutrophication of surface water has increased significantly during the past decade, resulting in increased occurrences of toxic blooms. Cyanotoxins have become a global health threat to humans, wild animals, or domestic livestock. Hepatotoxic microcystins (MC) are the predominant cyanotoxins, which accumulate in aquatic organisms and are transferred to
José C, Martins, Vítor M, Vasconcelos
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Allelopathic interactions between microcystin-producing and non-microcystin-producing cyanobacteria and green microalgae: implications for microcystins production

Journal of Applied Phycology, 2014
Most mixed culture studies on the allelopathic interactions between toxic and nontoxic cyanobacteria with phytoplankton species rarely investigate the role of microcystins (MC) production and regulation in the course of the studies. This study investigated the interactions between intact cells of toxic (Microcystis aeruginosa (Kutzing) Kutzing) and ...
Maria do Carmo Bittencourt-Oliveira, Mathias Ahii Chia, Helton Soriano Bezerra de Oliveira, Micheline Kézia Cordeiro Araújo, Renato José Reis Molica, Carlos Tadeu Santos Dias   +5 more
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Microcystins: Toxicological Profile

2015
Cyanobacteria are ubiquitous photosynthetic prokaryotic organisms, which can form blooms and scums in surface water, characterized by a wide morphological variability. Different cyanobacteria strains, i.e., Microcystis, Planktothrix and Anabaena spp., produce microcystins (MCs), a group of more than 100 different structural variants of toxic cyclic ...
Susanna Vichi, Franca M. Buratti, Emanuela Testai   +2 more
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Microcystin Elimination During Sediment Contact

Environmental Science & Technology, 2009
Microcystins (MCYSTs) are a group of structurally similar toxic peptides produced by cyanobacteria ("blue-green algae") which occur frequently in surface waters worldwide. Reliable elimination is necessary when using these waters as drinking water sources.
Grützmacher, Gesche, Wessel, Gabriele, Klitzke, Sondra, Chorus, Ingrid   +3 more
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Toxicology and Evaluation of Microcystins

Therapeutic Drug Monitoring, 2000
This paper reviews the toxicity and tumor-promoting properties of microcystins. Methods for screening and/or identification of microcystins in environmental samples are discussed and compared. Specific emphasis is placed on newly developed extraction/detection methods, e.g., solid phase microextraction (SPME) technique, and capillary electrophoresis ...
P K, Lam, M, Yang, M H, Lam
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Electrochemical Degradation of Microcystin-LR

Journal of Environmental Science and Health, Part A, 2005
Microcystin-LR present in drinking water sources poses a considerable threat to human health. Conventional oxidation treatment systems, such as photocatalysis and ferrate oxidation, demonstrated the formation of by-products detectable in the treated microcystin-LR solution.
Chuanping, Feng, Norio, Sugiura, Yuzuru, Masaoka, Takaaki, Maekawa   +3 more
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