Results 61 to 70 of about 7,557 (161)

Label-Free Detection of Saxitoxin with Field-Effect Device-Based Biosensor

Nanomaterials, 2022
Saxitoxin (STX) is a highly toxic and widely distributed paralytic shellfish toxin (PSP), posing a serious hazard to the environment and human health. Thus, it is highly required to develop new STX detection approaches that are convenient, desirable, and
Najeeb Ullah, Beenish Noureen, Yulan Tian, Liping Du, Wei Chen, Chunsheng Wu   +5 more
doaj   +1 more source

Estudo do mecanismo de ação tóxica da saxitoxina e avaliação de sua adsorção em materiais alternativos para aplicação em sistemas de tratamento de água [PDF]

, 2010
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Ambiental, Florianópolis, 2010Entre os diversos problemas de saúde pública ligados ao abastecimento de água, a contaminação de ...
Melegari, Sílvia Pedroso
core  

Cyanobacterial and STX occurrence among Brazilian Regions.

, 2020
(A) Brazilian map showing a division in regions. (B) Cyanobacteria in Brazil between 2014–2018. The measurements per municipality were split in ranges of cyanobacterial concentration. (C) STX 2014–2018 in Brazil.
Marcelo do N. Costa (8565792), Átila D. Rossi (8565798), Leticia R. Q. Souza (8565774), Pitia F. Ledur (8565783), Luiza M. Higa (8565795), Tiago A. Gomes (8565777), Caroline V. F. de Lima (8565780), Amilcar Tanuri (7885), Karina Karmirian (8565786), Fernanda Tovar-Moll (491928), Renato J. R. Molica (8565807), Patricia P. Garcez (8565801), Carolina da S. G. Pedrosa (8565771), Flavio A. Lara (8565804), Maria Bellio (249617), Stevens K. Rehen (8057456), Jimena Barbeito-Andres (8565789), Arnaldo Prata-Barbosa (5186558)   +17 more
core   +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

A Novel SELEX Based on Immobilizing Libraries Enables Screening of Saxitoxin Aptamers for BLI Aptasensor Applications

Toxins, 2022
Saxitoxin (STX) is one of the potent marine biotoxins that has high rate of lethality. However, there are no effective treatments at present, and the existing detection methods need to be further explored because of ethical problems or technical ...
Rong Zhou, Yun Gao, Chengfang Yang, Xiaojuan Zhang, Bo Hu, Luming Zhao, Han Guo, Mingjuan Sun, Lianghua Wang, Binghua Jiao   +9 more
doaj   +1 more source

Dominance and toxicity without lethality: Exploring biomass, cyanometabolites, and Daphnia responses across Cyanobacterial strains

Journal of Phycology, Volume 62, Issue 3, Page 801-817, June 2026.
Abstract Cyanobacteria are cosmopolitan, important components of biomass with a remarkable ability to synthesize a diverse array of bioactive compounds, some of which may have toxic effects on other organisms and ecosystems. In this study, filamentous cyanobacterial strains isolated predominantly from temperate European freshwaters (Aphanizomenon ...
Łukasz Wejnerowski, Tamara Dulić, Sultana Akter, Michał Rybak, Agnieszka Piasecka, Jakub Szymkowiak, Oskar Kamiński, Anna Czerepska, Filip Pniewski, Zorica Svirčev, Ewa Poniecka, Krzysztof Zawierucha, Katarzyna Taylor, Marcin Krzysztof Dziuba, Jussi Meriluoto   +14 more
wiley   +1 more source

A Synthesis of (+)-Saxitoxin

, 2016
An asymmetric synthesis of the bis-guanidinium poison, (+)-saxitoxin (STX), is described. Commencing from an N,O-acetal starting material made readily available through sulfamate ester C−H amination, the completed route to STX showcases the utility of ...
James J. Fleming (2480617), J. Du Bois (1315479)   +1 more
core   +1 more source

Cyanobacteria and Cyanotoxins in Mediterranean Reservoirs: Ecological Variability, Risks and Implications for Water Quality Assessment

Ecohydrology, Volume 19, Issue 1, January‐February 2026.
ABSTRACT The increasing demand for freshwater, in combination with climate change and pollution, compromises the quality and quantity of water resources. These pressures have intensified cyanobacterial blooms, including toxic events that threaten human health and aquatic ecosystems. This study complements the objectives of the Water Framework Directive
Ivo Pinto, Raquel Silva, Guilherme Scotta Hentschke, Vítor Vasconcelos, João Morais, Luísa Azevedo, Sara C. Antunes   +6 more
wiley   +1 more source

Grazer‐induced bioluminescence and toxicity in marine dinoflagellates

Limnology and Oceanography, Volume 70, Issue 12, Page 3769-3783, December 2025.
Abstract Marine copepods are the most abundant multicellular zooplankton in the global oceans. They imprint their surrounding waters with a unique bouquet of chemical compounds, including polar lipids such as copepodamides. Prey organisms can detect copepodamides and respond by inducing defensive traits including bioluminescence, toxin production ...
Paula Gonzalo‐Valmala, Milad Pourdanandeh, Sandra Lage, Erik Selander   +3 more
wiley   +1 more source

Synthesis of bifunctional saxitoxin analogues by biotinylation

, 2009
Saxitoxin (STX) contaminates seafood and freshwater catchments worldwide. Conjugation of STX with biotin would enable new biochemical methods to quantitate STX and its analogues as well as diversify its utility as a research tool. We conjugated biotin at
Robillot, Cedric, Llewellyn, Lyndon E., Kineavy, Daniel, Burnell, James   +3 more
core   +1 more source