Results 41 to 50 of about 11,510 (261)
Western Pacific Surveillance and Response, 2015 Background: In July 2013, the Philippines’ Event-Based Surveillance & Response Unit received a paralytic shellfish poisoning (PSP) report from Tarangnan, Western Samar.
Paola Katrina Ching +4 more
doaj +1 more source
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.
Jakobsen, KS +3 more
core +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
Bacterial Production of Saxitoxin
Agricultural and Biological Chemistry, 1988 A bacterium was isolated from the homogenate of Protogonyaulax tamarensis cells cultured in T1 medium containing antibiotics. The culture broth after centrifugation, to remove the cells, and the bacterial cells contained a toxin that could kill mice with signs similar to those of poisoning by paralytic shellfish toxins or tetrodotoxin. The toxin in the
Masaaki KODAMA +2 more
openaire +2 more sources
Sophisticated sperm allocation in male fowl [PDF]
, 2003 When a female is sexually promiscuous, the ejaculates of different males compete for the fertilization of her eggs; the more sperm a male inseminates into a female, the more likely he is to fertilize her eggs.
Pizzari, T. +4 more
core +1 more source
Science of the Total EnvironmentHarmful algal blooms and the toxins produced during these events are a human and environmental health concern worldwide. Saxitoxin and its derivatives are potent natural aquatic neurotoxins produced by certain freshwater cyanobacteria and marine algae ...
Albano Pinto +8 more
semanticscholar +1 more source
Latitudinal Differentiation in the Effects of the Toxic Dinoflagellate Alexandrium spp. on the Feeding and Reproduction of Populations of the Copepod Acartia Hudsonica [PDF]
, 2002 Blooms of the dinoflagellate Alexandrium spp. increase in their frequency, toxicity and historical presence with increasing latitude from New Jersey (USA) to the Gaspé peninsula (Canada).
Colin, Sean, Dam, Hans G.
core +2 more sources
Precise spatiotemporal control of voltage-gated sodium channels by photocaged saxitoxin
Nature Communications, 2020 Here we report the pharmacologic blockade of voltage-gated sodium ion channels (NaVs) by a synthetic saxitoxin derivative affixed to a photocleavable protecting group.
Anna V. Elleman +5 more
semanticscholar +1 more source
Toxins, 2018 Previous studies of recreational waters and blue-green algae supplements (BGAS) demonstrated co-occurrence of Aphanizomenon flos-aquae (AFA) and cyanotoxins, presenting exposure risk.
Amber Lyon-Colbert +2 more
doaj +1 more source
Journal of Chromatography A, 2019 Cyanobacteria can form dense blooms under specific environmental conditions, and some species produce secondary metabolites known as cyanotoxins, which present significant risks to public health and the environment.
S. Haddad +6 more
semanticscholar +1 more source