Results 211 to 220 of about 4,015 (236)

Detection of nodularin in flounders and cod from the Baltic Sea

Environmental Toxicology, 2001
AbstractThe brackish water cyanobacterium Nodularia spumigena regularly forms waterblooms in the Baltic Sea. Many N. spumigena strains can produce nodularin, a hepatotoxic penta‐peptide, which has caused several animal poisonings in the Baltic Sea area.
V, Sipiä, H, Kankaanpää, K, Lahti, W W, Carmichael, J, Meriluoto   +4 more
openaire   +2 more sources

Apoptotic responses of Carassius auratus lymphocytes to nodularin exposure in vitro

Fish & Shellfish Immunology, 2012
Nodularin, a metabolite of Nodularin spumigena, is widely detected in water blooms worldwide and causes serious negative effects on fish. The apoptosis-related cytotoxic effects and mechanisms of nodularin on Carassius auratus lymphocytes were investigated.
Zhang, H., Shao, D., Wu, Y., Cai, C., Hu, C., Shou, X., Dai, B., Ye, B., Wang, M., Jia, X.   +9 more
openaire   +2 more sources

Rapid determination of microcystins and nodularin in surface water by on-line solid-phase extraction (SPE) with ultra-performance liquid chromatography – tandem mass spectrometry (UPLC-MS/MS)

, 2020
A method for determining seven microcystins and nodularin in surface water at nanogram per liter concentrations was developed based on on-line solid-phase extraction ultra-performance liquid chromatography – electrospray ionization tandem mass ...
Fei Shen, Yanjuan Xu, Ye Wang, Jing Chen, Jun-zhe Shi   +4 more
semanticscholar   +1 more source

Development of a validated direct injection-liquid chromatographic tandem mass spectrometric method under negative electrospray ionization for quantitation of nine microcystins and nodularin-R in lake water.

Journal of Chromatography A, 2020
Microcystins (MCs) are cyclic heptapeptide toxins produced by various cyanobacterial genera that are toxic to both animals and humans. In this study, a novel strategy was proposed for the quantitation of nine MCs and Nodularin-R (NOD) in lake water using
Huiyan Zhang, G. Gonzales, N. Beloglazova, S. de Saeger, Jianzhong Shen, Suxia Zhang, Shupeng Yang, Zhanhui Wang   +7 more
semanticscholar   +1 more source

Effect of the immobilized microcystin-LR-degrading enzyme MlrA on nodularin degradation and its immunotoxicity study.

Environmental Pollution, 2019
In freshwater ecosystems with frequent cyanobacterial blooms, the cyanobacteria toxin pollution is becoming increasingly serious. Nodularin (NOD), which has strong biological toxicity, has emerged as a new pollutant and affects the normal growth ...
Xiang Wu, Hao Wu, Xiaoxiao Gu, Rongfei Zhang, Q. Sheng, Jinyun Ye   +5 more
semanticscholar   +1 more source

Uptake and accumulation of dissolved, radiolabeled nodularin in Baltic Sea zooplankton

Environmental Toxicology, 2003
AbstractThe mass occurrence of toxic cyanobacteria is a recurrent phenomenon in the Baltic Sea. Grazers may obtain toxins either through ingestion or by direct exposure to dissolved toxins. Despite this, there is little knowledge about the accumulation of cyanobacterial toxins in planktonic organisms present during these blooms.
M, Karjalainen, M, Reinikainen, F, Lindvall, L, Spoof, J A O, Meriluoto   +4 more
openaire   +2 more sources

Mass spectrometric detection of nodularin and desmethylnodularin in mussels and flounders

Journal of Chromatography B, 2003
Samples of mussels and flounders from the Baltic Sea were analysed for nodularin content on two different LC-MS instruments (triple quadrupole and ion trap). The triple quadrupole instrument was well suited for the quantitative analysis. The limit of detection in the selected ion recording mode was 5 pg and in the multiple reactant monitoring mode 500 ...
Krister, Karlsson, Vesa, Sipiä, Harri, Kankaanpää, Jussi, Meriluoto   +3 more
openaire   +2 more sources

Sedimentation of Nodularia spumigena and distribution of nodularin in the food web during transport of a cyanobacterial bloom from the Baltic Sea to the Kattegat.

Harmful Algae, 2019
Nodularia spumigena is a toxic cyanobacteria that blooms in the Baltic Sea every year. In the brackish water of the Baltic Sea, its toxin, nodularin, mainly affects the biota in the surface water due to the natural buoyancy of this species.
P. Carlsson, Diego Rita
semanticscholar   +1 more source

The degradation of the cyanobacterial hepatotoxin nodularin (NOD) by UV radiation

Chemosphere, 2006
This study investigates the decomposition of NOD by UV irradiation. Water solutions of pure NOD and NOD-containing Nodularia extract as well as Nodularia filaments collected on filters were exposed to UV-A, UV-B, and white fluorescent light (VIS) during 48 h experiments. In VIS, the toxin was fairly stable and only 3.8-4.6% of the original degraded. UV-
Hanna, Mazur-Marzec, Jussi, Meriluoto, Marcin, Pliński   +2 more
openaire   +2 more sources

ChemInform Abstract: Nodularin, Microcystin, and the Configuration of Adda.

ChemInform, 1989
AbstractThe uniquely characteristic C20 amino acid Adda is present in closely related toxins reported recently such as microcystins (cyanoginosins; all cyclic heptapeptides), e.g. microcystin LR (I) (presumably identical with cyanoginosin LR).
K. L. RINEHART, K. HARADA, M. NAMIKOSHI, C. CHEN, C. A. HARVIS, M. H. G. MUNRO, J. W. BLUNT, P. E. MULLIGAN, V. R. BEASLEY, A. M. DAHLEM, W. W. CARMICHAEL   +10 more
openaire   +1 more source