Results 31 to 40 of about 1,079 (195)

Synthesis of the A−F Fragment of the Pacific Ciguatoxin CTX3C by Iterative Ring‐Closing Metathesis and Tsuji–Trost Allylation

Chemistry – A European Journal, Volume 29, Issue 72, December 22, 2023., 2023
The fully functionalized A−F ring system of the Pacific ciguatoxin CTX3C suitable for coupling to the I−M fragment of the natural product, has been synthesized from a simple glucal derivative. A six‐step sequence that features ring‐closing metathesis and stereoselective palladium‐mediated allylation has been deployed in an iterative manner to construct
Myron Triantafyllakis, Sam Alexander, Sophie Woolford, Claire Wilson, J. Stephen Clark   +4 more
wiley   +1 more source

First Light Demonstration of Red Solar Induced Fluorescence for Harmful Algal Bloom Monitoring

Geophysical Research Letters, Volume 50, Issue 13, 16 July 2023., 2023
Abstract The risks harmful algal blooms (HAB) pose to aquatic ecosystems, public health, and coastal economies necessitate supplementation of current observation strategies. Herein, we explore the use of red solar induced fluorescence (SIF) from the TROPOspheric Monitoring Instrument (TROPOMI), a remote sensing measurement retrievable in variable cloud
Kelly Luis, Philipp Köhler, Christian Frankenberg, Michelle Gierach   +3 more
wiley   +1 more source

Metabarcoding analysis identifies high diversity of harmful algal bloom species in the coastal waters of the Beibu Gulf

Ecology and Evolution, Volume 13, Issue 5, May 2023., 2023
This study firstly combined both short‐read and long‐read metabarcoding analyses for annual marine phytoplankton community and harmful algal bloom species identification in the Beibu Gulf. Based on the high richness from short‐read and the high accuracy of species identification from long‐read, HAB species with high diversity and abundance were ...
Liyan He, Zhiming Yu, Xin Xu, Jianan Zhu, Yongquan Yuan, Xihua Cao, Xiuxian Song   +6 more
wiley   +1 more source

Revisiting the Neuroblastoma Cell-Based Assay (CBA-N2a) for the Improved Detection of Marine Toxins Active on Voltage Gated Sodium Channels (VGSCs)

Toxins, 2020
The neuroblastoma cell-based assay (CBA-N2a) is widely used for the detection of marine biotoxins in seafood products, yet a consensus protocol is still lacking.
Jérôme Viallon, Mireille Chinain, Hélène Taiana Darius   +2 more
doaj   +1 more source

Spectroscopic ellipsometry methods for brevetoxin detection

Talanta, 2022
The spectroscopic ellipsometry (SE), and attenuated internal reflection spectroscopic ellipsometry (TIRE) are promising methods in label-free biosensing applications. An ellipsometer running under surface plasmon resonance (SPR) conditions has unique advantages over other SPR-based methods in terms of sensitivity and real-time/label-free measurement ...
Mustafa Oguzhan Caglayan, Zafer Üstündağ, Samet Şahin   +2 more
openaire   +2 more sources

First Case of Brevetoxicosis Linked to Rough-Toothed Dolphin (Steno bredanensis) Mass-Mortality Event in Eastern Central Atlantic Ocean: A Climate Change Effect?

Frontiers in Marine Science, 2022
Harmful algal blooms (HABs) have been increasingly recorded over the last decades and much work has linked these events to multiple oceanographic and climate disturbances.
Antonio Fernández, Eva Sierra, Manuel Arbelo, Ana Gago-Martínez, Jose Manuel Leao Martins, Natalia García-Álvarez, Yara Bernaldo de Quiros, Marina Arregui, Ana Isabel Vela, Ana Isabel Vela, Josue Díaz-Delgado   +10 more
doaj   +1 more source

Synthesis, Modeling, and Biological Evaluation of Analogues of the Semisynthetic Brevetoxin Antagonist β‐Naphthoyl‐Brevetoxin [PDF]

ChemBioChem, 2007
AbstractBrevetoxins are neurotoxic compounds produced by the dinoflagellate Karenia brevis. Extensive blooms induce neurotoxic shellfish poisoning (NSP) and asthma‐like symptoms in humans. β‐naphthoyl‐brevetoxin, the first semisynthetic brevetoxin antagonist, has been defined as the lead compound in the investigation of the mechanisms of ...
Sophie, Michelliza, William M, Abraham, Henry M, Jacocks, Thomas, Schuster, Daniel G, Baden   +4 more
openaire   +2 more sources

Evaluation of Harmful Algal Bloom Outreach Activities

Marine Drugs, 2007
With an apparent increase of harmful algal blooms (HABs) worldwide,healthcare providers, public health personnel and coastal managers are struggling toprovide scientifically-based appropriately-targeted HAB outreach and education.
Richard Weisman, Julie Hollenbeck, Sharon Watkins, Kate Nierenberg, Lorraine Backer, Barbara Kirkpatrick, Andrew Reich, Judy A. Bean, Amy Cassedy, Wendy Blair Blair Stephan, Eva Jerez, Lora E. Fleming   +11 more
doaj   +1 more source

Further Insights into Brevetoxin Metabolism by de Novo Radiolabeling

Toxins, 2014
The toxic dinoflagellate Karenia brevis, responsible for early harmful algal blooms in the Gulf of Mexico, produces many secondary metabolites, including potent neurotoxins called brevetoxins (PbTx).
Kevin Calabro, Jean-Marie Guigonis, Jean-Louis Teyssié, François Oberhänsli, Jean-Pierre Goudour, Michel Warnau, Marie-Yasmine Dechraoui Bottein, Olivier P. Thomas   +7 more
doaj   +1 more source

Determination of Brevetoxins in Shellfish by the Neuroblastoma Assay [PDF]

Journal of AOAC INTERNATIONAL, 2002
Abstract A neuroblastoma assay for determination of brevetoxins in shellfish was developed together with a method for sample cleanup that allows separation of brevetoxins from most of the components that cause matrix interference in the assay.
Penelope, Truman, David J, Stirling, Peter, Northcote, Robin J, Lake, Catherine, Seamer, Donald J, Hannah   +5 more
openaire   +2 more sources