Results 21 to 30 of about 4,015 (236)

Solution Structure of Nodularin [PDF]

open access: yesJournal of Biological Chemistry, 1996
The three-dimensional solution structure of nodularin was studied by NMR and molecular dynamics simulations. The conformation in water was determined from the distance and dihedral data by distance geometry and refined by iterative relaxation matrix analysis. The cyclic backbone adopts a well defined conformation but the remote parts of the side chains
Arto Annila   +6 more
openaire   +3 more sources

Determination of Nodularin in Algae-based Health Food by Ultra- Performance Liquid Triple Quadrupole Chromatography-Tandem Mass Spectrometry

open access: yesShipin gongye ke-ji, 2022
A method was developed for the determination of nodularin (NOD) in algae-based health food by ultra-performance liquid chromatography-triple quadrupole tandem mass spectrometry (UPLC-MS/MS). The analytes were extracted from algae-based health food powder
Shuo LI, Li LI
doaj   +1 more source

Shifts in DNA yield and biological community composition in stored sediment: implications for paleogenomic studies [PDF]

open access: yesMetabarcoding and Metagenomics, 2022
Lake sediments hold a wealth of information from past environments that is highly valuable for paleolimnological reconstructions. These studies increasingly apply modern molecular tools targeting sedimentary DNA (sedDNA).
Katie A. Brasell   +8 more
doaj   +3 more sources

Congener-Independent Immunoassay for Microcystins and Nodularins [PDF]

open access: yesEnvironmental Science & Technology, 2001
Cyanobacteria (blue-green algae) (e.g., Microcystis and Nodularia spp.) capable of producing toxic peptides are found in fresh and brackish water worldwide. These toxins include the microcystin (MC) heptapeptides (>60 congeners) and the nodularin pentapeptides (ca. 5 congeners).
Fischer, Werner Jürgen   +7 more
openaire   +3 more sources

Environmental Exposure to Cyanobacteria Hepatotoxins in a Pacific Island Community: A Cross-Sectional Assessment

open access: yesMicroorganisms, 2022
(1) Background: Cyanobacteria produce a wide range of secondary metabolites, including tumor-promoting hepatotoxins. We recently reported evidence of an independent association between oral cyanobacteria and hepatocellular carcinoma in a U.S. population.
Brenda Y. Hernandez   +6 more
doaj   +1 more source

How Copepods Can Eat Toxins Without Getting Sick: Gut Bacteria Help Zooplankton to Feed in Cyanobacteria Blooms

open access: yesFrontiers in Microbiology, 2021
Toxin-producing cyanobacteria can be harmful to aquatic biota, although some grazers utilize them with often beneficial effects on their growth and reproduction. It is commonly assumed that gut microbiota facilitates host adaptation to the diet; however,
Elena Gorokhova   +3 more
doaj   +1 more source

Development, Validation and Application of a Targeted LC-MS Method for Quantification of Microcystins and Nodularin: Towards a Better Characterization of Drinking Water

open access: yesWater, 2022
Cyanotoxins can be produced in surface waters by cyanobacterial blooms, mostly during summer and early autumn. Intoxications would result from consumption of water contaminated with the potent hepatotoxins, microcystins and nodularin.
W. H. V. Van Hassel   +4 more
semanticscholar   +1 more source

Nodularin Exposure Induces SOD1 Phosphorylation and Disrupts SOD1 Co-localization with Actin Filaments

open access: yesToxins, 2012
Apoptotic cell death is induced in primary hepatocytes by the Ser/Thr protein phosphatase inhibiting cyanobacterial toxin nodularin after only minutes of exposure. Nodularin-induced apoptosis involves a rapid development of reactive oxygen species (ROS),
Kari E. Fladmark   +4 more
doaj   +1 more source

Blooms of Toxic Cyanobacterium Nodularia spumigena in Norwegian Fjords During Holocene Warm Periods

open access: yesToxins, 2020
In paleoecological studies, molecular markers are being used increasingly often to reconstruct community structures, environmental conditions and ecosystem changes.
Robert Konkel   +6 more
doaj   +1 more source

Cyanobacterial Akinete Distribution, Viability, and Cyanotoxin Records in Sediment Archives From the Northern Baltic Sea

open access: yesFrontiers in Microbiology, 2021
Cyanobacteria of the order Nostocales, including Baltic Sea bloom-forming taxa Nodularia spumigena, Aphanizomenon flosaquae, and Dolichospermum spp., produce resting stages, known as akinetes, under unfavorable conditions.
Steffaney M. Wood   +6 more
doaj   +1 more source

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