Results 21 to 30 of about 14,066 (175)

Overexpression of Nrf2 protects against microcystin-induced hepatotoxicity in mice. [PDF]

PLoS ONE, 2014
Oxidative stress and glutathione (GSH) depletion are implicated in mycocystin hepatotoxicity. To investigate the role of nuclear factor erythroid 2-related factor 2 (Nrf2) in microcystin-induced liver injury, Nrf2-null, wild-type, and Keap1-hepatocyte ...
Yuan-Fu Lu, Jie Liu, Kai Connie Wu, Qiang Qu, Fang Fan, Curtis D Klaassen   +5 more
doaj   +1 more source

Metagenomic identification of bacterioplankton taxa and pathways involved in microcystin degradation in lake erie. [PDF]

PLoS ONE, 2013
Cyanobacterial harmful blooms (CyanoHABs) that produce microcystins are appearing in an increasing number of freshwater ecosystems worldwide, damaging quality of water for use by human and aquatic life.
Xiaozhen Mou, Xinxin Lu, Jisha Jacob, Shulei Sun, Robert Heath   +4 more
doaj   +1 more source

Diel Variations of Extracellular Microcystin Influence the Subcellular Dynamics of RubisCO in Microcystis aeruginosa PCC 7806

Microorganisms, 2021
The ubiquitous freshwater cyanobacterium Microcystis is remarkably successful, showing a high tolerance against fluctuations in environmental conditions.
Arthur Guljamow, Tino Barchewitz, Rebecca Große, Stefan Timm, Martin Hagemann, Elke Dittmann   +5 more
doaj   +1 more source

Studies on the immunosuppressive effects and detection of naturally-occuring toxins [PDF]

, 2012
Episodes of toxin-producing phytoplankton occur worldwide, causing both animal and human fatalities. Toxicity occurs through consumption of phycotoxins, including azaspiracid, which accumulate in filter-feeding shellfish. Microcystins are hepatotoxins,
Stack, Edwina C.
core   +2 more sources

Episodic Decrease in Temperature Increases mcy Gene Transcription and Cellular Microcystin in Continuous Cultures of Microcystis aeruginosa PCC 7806

Frontiers in Microbiology, 2020
Microcystins produced during harmful cyanobacterial blooms are a public health concern. Although patterns are emerging, the environmental cues that stimulate production of microcystin remain confusing, hindering our ability to predict fluctuations in ...
Robbie M. Martin, Mohammad Moniruzzaman, Gwendolyn F. Stark, Eric R. Gann, Dominique S. Derminio, Bofan Wei, Ferdi L. Hellweger, Ameet Pinto, Gregory L. Boyer, Steven W. Wilhelm   +9 more
doaj   +1 more source

Laboratory-scale evaluation of algaecide effectiveness for control of microcystin-producing cyanobacteria from Lake Okeechobee, Florida (USA)

Ecotoxicology and Environmental Safety, 2021
Growth of microcystin-producing cyanobacteria in Lake Okeechobee (Florida, USA) and surrounding waters has resulted in adverse health impacts for humans and endangered species, as well as significant economic losses.
Ciera Kinley-Baird, Alyssa Calomeni, David E. Berthold, Forrest W. Lefler, Maximiliano Barbosa, John H. Rodgers, H. Dail Laughinghouse, IV   +6 more
doaj   +1 more source

Microcystin-LR does not induce alterations to transcriptomic or metabolomic profiles of a model heterotrophic bacterium. [PDF]

PLoS ONE, 2017
Microcystins are secondary metabolites produced by several freshwater, bloom-forming cyanobacterial species. Microcystin-producing cyanobacteria co-occur with a complex community of heterotrophic bacteria.
Robbie M Martin, Stephen P Dearth, Gary R LeCleir, Shawn R Campagna, Elizabeth M Fozo, Erik R Zinser, Steven W Wilhelm   +6 more
doaj   +1 more source

Measurable microcystin in Ozark streams was rare during summer 2018 baseflow conditions

Agricultural & Environmental Letters, 2022
Accelerated eutrophication due to human activity has been linked to an increase in the occurrence of cyanobacteria in freshwater systems. The purpose of this study was to document the occurrence of microcystin, a common cyanotoxin, within northwest ...
Bradley J. Austin, Brian E. Haggard
doaj   +1 more source

Temperature and Nitrate Effects on Biomass and Microcystin Compartmentalization in Microcystis spp.: A Multilevel Meta-Analysis

Phycology
Among cyanobacterial genera, Microcystis spp. dominate aquatic systems and form harmful algal blooms (HABs) under favorable environmental conditions, such as temperature and nitrogen availability.
Zubeidat Precious Ahmed, Elizabeth Abdulmalik, Besna Armando Daniel, Abdullahi Kusogi Abdullahi, Suleiman Dauda, Sadiya Awala Samuel, Abraham Gana Yisa, Jerry Tersoo Agee, Ibrahim Yusuf Okpanachi, Mathias Ahii Chia   +9 more
doaj   +1 more source

Presence or Absence of mlr Genes and Nutrient Concentrations Co-Determine the Microcystin Biodegradation Efficiency of a Natural Bacterial Community

Toxins, 2016
The microcystin biodegradation potential of a natural bacterial community coexisting with a toxic cyanobacterial bloom was investigated in a water reservoir from central Spain. The biodegradation capacity was confirmed in all samples during the bloom and
María Ángeles Lezcano, Jesús Morón-López, Ramsy Agha, Isabel López-Heras, Leonor Nozal, Antonio Quesada, Rehab El-Shehawy   +6 more
doaj   +1 more source