Results 51 to 60 of about 5,292 (200)

Evolutionary acquisition and loss of saxitoxin biosynthesis in dinoflagellates: The second "core" gene, sxtG [PDF]

, 2013
Saxitoxin and its derivatives are potent neurotoxins produced by several cyanobacteria and dinoflagellate species. SxtA is the initial enzyme in the biosynthesis of saxitoxin.
Murray, Shauna A., Stüken, A, Orr, Russell, Jakobsen, KS, Jakobsen, Kjetill Sigurd, Stüken, Anke, Orr, RJS, Murray, SA   +7 more
core   +1 more source

Polarized Light Microscopy for Quantitative Assessment of Sarcomere‐Scale Structural Order in Cardiac Tissue

Journal of Biophotonics, Volume 19, Issue 8, August 2026.
Impact of cardiac and respiratory arrest on cardiac muscle tissue. Wistar rats were injected (on the left) either with cisatracurium to induce a respiratory arrest or lidocaine to induce a cardiac arrest (in the middle). Further, the pathophysiological changes developed and were assessed with linear polarization microscopy at 600–3000 nm wavelength ...
Gennadii Piavchenko, Artem Venediktov, Zoya Shamitko, Karina Urazova, Mariia Obelchakova, Evelina Khabarova, Anton Ershov, Natalia Kartashkina, Viktoria Grikh, Valerii Smirnov, Galina Ramenskaya, Alexander Yatskovskiy, Igor Meglinski   +12 more
wiley   +1 more source

Approaches towards the synthesis of saxitoxin alkaloids [PDF]

, 2013
2013 Summer.Includes bibliographical references.Zetekitoxin AB is a toxin isolated from the Panamanian golden frog (Atelopus zeteki). The structure and activity of zetekitoxin AB was a mystery for 30 years until 2004 when it was elucidated by Yamashita ...
Williams, Robert M., advisor, Fisher, Ellen R., committee member, Pearson, Aaron Daniel, author, Wood, John L., committee member, Woody, Robert W., committee member, Kennan, Alan J., committee member   +5 more
core  

Dinoflagellate responses to nutrients and mangrove leaf organic matter in the bioluminescent Mangrove Lagoon, St. Croix, U.S. Virgin Islands

Journal of Phycology, Volume 62, Issue 4, Page 1240-1250, August 2026.
Abstract Bioluminescent bays (biobays) are uncommon coastal ecosystems featuring dense populations of dinoflagellates, often found in mangrove‐ringed lagoons with long water retention times and high organic matter (OM) levels. Although mangroves are associated with high dinoflagellate abundance, it remains uncertain how inorganic nutrients compare with
James L. Pinckney, Michelle Zimberlin, Dianne I. Greenfield   +2 more
wiley   +1 more source

Visible Fluorescence Chemosensor for Saxitoxin

, 2016
Absorption spectra of a number of shellfish extracts have been obtained and reveal prominent absorptions in all samples at 210 and 260 nm and at 325 nm in some of them.
Robert E. Gawley (1980682), Jennifer S. Pharr (2500549), John B. Thorne (2500552), Hua Mao (2128585), M. Mahbubul Haque (2500546)   +4 more
core   +1 more source

Optimizing a long‐term monitoring strategy to track emerging cyanobacterial blooms in a Great Lakes estuary

Journal of Phycology, Volume 62, Issue 4, Page 1264-1296, August 2026.
Abstract Cyanobacterial harmful algal blooms (cHABs) are increasingly frequent and severe globally. Recently, the St. Louis River Estuary (SLRE) has experienced numerous cHABs, but the locations, timing, and environmental conditions associated with them are unknown.
Peter A. Birschbach, Euan D. Reavie, Christopher T. Filstrup, Hannah Nicklay   +3 more
wiley   +1 more source

Anthracylmethyl crown ethers as fluorescence sensors of saxitoxin

, 1999
Anthracylmethyl crowns 1 and 2 show up to 30-fold increase in fluorescence emission intensity in the presence of saxitoxin in ethanol, and sixfold enhancement in 80% ethanol.
Gawley, Robert E, Zhang, Qianhui, Leblanc, Roger M, Higgs, Paul I, Wang, Shaopeng   +4 more
core   +1 more source

Cardiac remodeling and arrhythmia in a mouse model of Depdc5 haploinsufficiency

Epilepsia, Volume 67, Issue 7, Page 3738-3752, July 2026.
Abstract Objective Some ion channel genes linked to developmental and epileptic encephalopathy (DEE) are also linked to cardiac arrhythmia, leading to the hypothesis that predisposition to cardiac arrhythmias may contribute to the complex disease presentation of DEE and possibly to the mechanism of sudden unexpected death in epilepsy.
Roberto Ramos‐Mondragon, Shuyun Wang, Qinghua Liu, Chunling Chen, Alexander M. Greiner, Abigail M. Marx, Maya Shih, Jack M. Parent, Barry London, Lori L. Isom   +9 more
wiley   +1 more source

Extensive Contamination of Water with Saxitoxin Near the Dam of the Irkutsk Hydropower Station Reservoir (East Siberia, Russia)

Toxins, 2018
An area of discolored water 50 m wide and 30 m long was found in September 2017 close to the dam of the Irkutsk hydroelectric power station. Water from this spot was sampled for investigation in the present study.
Mikhail Grachev, Ilya Zubkov, Irina Tikhonova, Maria Ivacheva, Anton Kuzmin, Elena Sukhanova, Ekaterina Sorokovikova, Galina Fedorova, Aleksandr Galkin, Maria Suslova, Olga Netsvetayeva, Elena Eletskaya, Tatyana Pogadaeva, Vladimir Smirnov, Andrey Ivanov, Vladimir Shagun, Viktor Minaev, Olga Belykh   +17 more
doaj   +1 more source

Biosensors for Biotoxins Detection and Monitoring

Advanced Sensor Research, Volume 5, Issue 6, June 2026.
This review examines state‐of‐the‐art biosensing platforms for biotoxin detection, including antibody‐, aptamer‐, CRISPR‐, nanopore‐, whole cells‐ and MIP‐based sensors. It highlights advances in ultra‐sensitive detection, real‐matrix validation in food and water, and multiplexed analysis, and discusses how the integration with machine learning ...
Alissa Agerova, Juan Francisco Bada Juarez, Matteo Dal Peraro   +2 more
wiley   +1 more source