Results 11 to 20 of about 3,297 (178)

Microfluidic Flow Injection Immunoassay System for Algal Toxins Determination: A Case of Study

Frontiers in Chemistry, 2021
A novel flow injection microfluidic immunoassay system for continuous monitoring of saxitoxin, a lethal biotoxin, in seawater samples is presented in this article.
Lorenzo Celio, Matteo Ottaviani, Rocco Cancelliere, Alessio Di Tinno, Alessio Di Tinno, Peter Panjan, Peter Panjan, Adama Marie Sesay, Adama Marie Sesay, Laura Micheli   +9 more
doaj   +1 more source

Insights into Alexandrium minutum Nutrient Acquisition, Metabolism and Saxitoxin Biosynthesis through Comprehensive Transcriptome Survey

Biology, 2021
The toxin-producing dinoflagellate Alexandrium minutum is responsible for the outbreaks of harmful algae bloom (HABs). It is a widely distributed species and is responsible for producing paralytic shellfish poisoning toxins.
Muhamad Afiq Akbar, Nurul Yuziana Mohd Yusof, Fathul Karim Sahrani, Gires Usup, Asmat Ahmad, Syarul Nataqain Baharum, Nor Azlan Nor Muhammad, Hamidun Bunawan   +7 more
doaj   +1 more source

Physiological Effects of Oxidative Stress Caused by Saxitoxin in the Nematode Caenorhabditis elegans

Marine Drugs, 2023
Saxitoxin (STX) causes high toxicity by blocking voltage-gated sodium channels, and it poses a major threat to marine ecosystems and human health worldwide.
Haiyan Wu, Balakrishnan Prithiviraj, Zhijun Tan   +2 more
doaj   +1 more source

Paralytic Shellfish Toxins of Pyrodinium bahamense (Dinophyceae) in the Southeastern Gulf of Mexico

Toxins, 2022
In September and November 2016, eight marine sampling sites along the coast of the southeastern Gulf of Mexico were monitored for the presence of lipophilic and hydrophilic toxins.
Erick J. Núñez-Vázquez, Carlos A. Poot-Delgado, Andrew D. Turner, Francisco E. Hernández-Sandoval, Yuri B. Okolodkov, Leyberth J. Fernández-Herrera, José J. Bustillos-Guzmán   +6 more
doaj   +1 more source

A Stereocontrolled Synthesis of (+)-Saxitoxin [PDF]

Journal of the American Chemical Society, 2011
A concise stereoselective total synthesis of (+)-saxitoxin is described. A silver(I)-initiated hydroamination cascade constructs the bicyclic guanidinium ion core from a alkynyl bisguanidine. This sequence creates two C-N bonds, one C-O bond, and three rings and forms a single stereoisomer in a single synthetic transformation.
Vasudev R, Bhonde, Ryan E, Looper
openaire   +2 more sources

Temperature Influences the Production and Transport of Saxitoxin and the Expression of sxt Genes in the Cyanobacterium Aphanizomenon gracile

Toxins, 2017
The cyanobacterium Aphanizomenon gracile is the most widely distributed producer of the potent neurotoxin saxitoxin in freshwaters. In this work, total and extracellular saxitoxin and the transcriptional response of three genes linked to saxitoxin ...
Samuel Cirés, Adrián Delgado, Miguel González-Pleiter, Antonio Quesada   +3 more
doaj   +1 more source

Gymnodinium catenatum Paralytic Shellfish Toxin Production and Photobiological Responses under Marine Heat Waves

Toxins, 2023
Marine heatwaves (MHWs) have doubled in frequency since the 1980s and are projected to be exacerbated during this century. MHWs have been shown to trigger harmful algal blooms (HABs), with severe consequences to marine life and human populations.
Vanessa M. Lopes, Mélanie Court, Martim Costa Seco, Francisco O. Borges, Bernardo Vicente, Sandra Lage, Ana Catarina Braga, Bernardo Duarte, Catarina Frazão Santos, Ana Amorim, Pedro Reis Costa, Rui Rosa   +11 more
doaj   +1 more source

Behavioral alterations induced by repeated saxitoxin exposure in drinking water

Journal of Venomous Animals and Toxins including Tropical Diseases, 2016
Background Blooms of the saxitoxin-producing cyanobacterium Cylindrospermopsis raciborskii have been contaminating drinking water reservoirs in Brazil for many years.
Felipe Diehl, Patricia Baptista Ramos, Juliane Marques dos Santos, Daniela Martí Barros, João Sarkis Yunes   +4 more
doaj   +1 more source

A putative gene cluster from a Lyngbya wollei bloom that encodes paralytic shellfish toxin biosynthesis.

PLoS ONE, 2011
Saxitoxin and its analogs cause the paralytic shellfish-poisoning syndrome, adversely affecting human health and coastal shellfish industries worldwide.
Troco K Mihali, Wayne W Carmichael, Brett A Neilan   +2 more
doaj   +1 more source

Saxitoxin Level Comparation in Bali Sardine (Sardinella Lemuru) in Bali Strait in Different Monsoons

Research Journal of Life Science, 2017
Sardinella fish (Sardinella lemuru) is a species of important pelagic fish from the family of Clupeidae found in Bali Strait. The dynamic condition of Bali Strait makes it fertile which is identical with plankton blooming.
Endang Yuli Herawati, Mohammad Mahmudi, Fani Fariedah, Ruly Isfatul Khasanah   +3 more
doaj   +1 more source