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1. Full Text Liquid Chromatography–Tandem Mass Spectrometry Method for the Screening of Eight Paralytic Shellfish Poisoning Toxins, Domoic Acid, 13-Desmethyl Spirolide C, Palytoxin and Okadaic Acid in Seawater
by Riccardi, Carmela and Buiarelli, Francesca and Di Filippo, Patrizia and Distratis, Sisto and Giannetti, Luigi and Manganelli, Maura and Neri, Bruno and Pomata, Donatella and Stefanelli, Mara
Chromatographia, ISSN 0009-5893, 2/2018, Volume 81, Issue 2, pp. 277 - 288
A quick and reproducible screening analytical method for the simultaneous determination of algal toxins, belonging to different chemical classes, was developed... 
Column liquid chromatography | Chemistry | Analytical Chemistry | Harmful algal blooms | Pharmacy | Proteomics | Algal toxins | Laboratory Medicine | Seawater samples | Chromatography | Solid-phase extraction | CHEMISTRY, ANALYTICAL | PROFILES | PUTATIVE PALYTOXIN | PSP TOXINS | RED TIDE | BIOCHEMICAL RESEARCH METHODS | OSTREOPSIS-OVATA | LC-MS | MARINE BIOTOXINS | OVATOXIN-A | Marine toxins | Paralytic shellfish poisoning | Liquid chromatography | Medical screening | Mass spectrometry | Sea-water | Methods | Elution | Shellfish | Ions | Ecological risk assessment | Screening | Acids | Ionization | Cartridges | Toxins | Poisoning | Seawater
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2. Full Text Profiles and levels of fatty acid esters of okadaic acid group toxins and pectenotoxins during toxin depuration. Part II: Blue mussels ( Mytilus edulis) and flat oyster ( Ostrea edulis)
by Torgersen, Trine and Sandvik, Morten and Lundve, Bengt and Lindegarth, Susanne and Naturvetenskapliga fakulteten and Institutionen för marin ekologi and Institutionen för marin ekologi, Tjärnö marinbiologiska laboratorium and Faculty of Sciences and Göteborgs universitet and Gothenburg University and Department of Marine Ecology and Department of Marine Ecology, Tjärnö Marine Biological Laboratory
Toxicon, ISSN 0041-0101, 2008, Volume 52, Issue 3, pp. 418 - 427
Bivalve molluscs accumulate toxins of the okadaic acid (OA) and pectenotoxin (PTX) groups, which are frequently found in spp. Transformation of the OA-group... 
LC-MS | Fatty acid ester | Mytilus edulis | Okadaic acid | Dinophysistoxin | DTX3 | Depuration | Pectenotoxin | Ostrea edulis | Toxin profiles | DSP TOXINS | PROTEIN PHOSPHATASE | DIFFERENTIAL DYNAMICS | NORWAY | DINOPHYSIS-ACUTA | SECO ACID | MASS-SPECTROMETRY | PHARMACOLOGY & PHARMACY | TOXICOLOGY | CARCINUS-MAENAS | SCALLOP PATINOPECTEN-YESSOENSIS | SHELLFISH-POISONING TOXINS | Okadaic Acid - chemistry | Animals | Marine Toxins - chemistry | Marine Toxins - metabolism | Mytilus edulis - metabolism | Okadaic Acid - metabolism | Ostrea - metabolism | Feeding Behavior | Molecular Structure | Okadaic Acid - analogs & derivatives | Esters | Safety and security measures | Mussels | Fatty acids | Analysis | Food | Index Medicus | Biological Sciences | mass-spectrometry | pectenotoxin | lc-ms | dtx3 | scallop patinopecten-yessoensis | dinophysistoxin | seco acid | toxin profiles | depuration | okadaic acid | shellfish-poisoning toxins | protein phosphatase | dsp toxins | fatty acid ester | carcinus-maenas | Biologiska vetenskaper | dinophysis-acuta | differential dynamics | norway | Farmakologi och toxikologi | Pharmacology and Toxicology | mytilus edulis | ostrea edulis
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3. Full Text In vitro bioaccessibility of the marine biotoxins okadaic acid, dinophysistoxin-2 and their 7-O-acyl fatty acid ester derivatives in raw and steamed shellfish
by Manita, Diana and Alves, Ricardo N and Braga, Ana Catarina and Fogaça, Fabiola H.S and Marques, António and Costa, Pedro Reis
Food and Chemical Toxicology, ISSN 0278-6915, 03/2017, Volume 101, pp. 121 - 127
Okadaic acid (OA), Dinophysistoxins (DTX1 and DTX2) and their acyl-derivatives (DTX3) are marine toxins responsible for the human diarrhetic shellfish... 
Okadaic acid | Dinophysis | Diarrhetic shellfish poisoning | Lipophilic toxins | Fatty Acids - chemistry | Humans | Okadaic Acid - pharmacokinetics | Marine Toxins - pharmacokinetics | Pyrans - pharmacokinetics | Animals | Esters - chemistry | Steam | Carcinogens - pharmacokinetics | Bivalvia - drug effects | Chromatography, Liquid - methods | In Vitro Techniques | Mass Spectrometry - methods | Shellfish - analysis | Seafood | Poisoning | Marine toxins | Fatty acids | Analysis | Marine sciences | Index Medicus
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4. Full Text Effect of carbon chain length in acyl coenzyme A on the efficiency of enzymatic transformation of okadaic acid to 7-O-acyl okadaic acid
by Furumochi, Sachie and Onoda, Tatsuya and Cho, Yuko and Fuwa, Haruhiko and Sasaki, Makoto and Yotsu-Yamashita, Mari and Konoki, Keiichi
Bioorganic & Medicinal Chemistry Letters, ISSN 0960-894X, 07/2016, Volume 26, Issue 13, pp. 2992 - 2996
Okadaic acid (OA), a product of dinoflagellate spp., is transformed into 7- -acyl OA in various bivalve species. The structural transformation proceeds... 
Dinophysistoxin 3 | Okadaic acid | Bivalves | Detoxification | CHEMISTRY, MEDICINAL | ANALOGS | TOXINS | CHEMISTRY, ORGANIC | IDENTIFICATION | COA HYDROLASES | INHIBITION | PROTEIN FATTY-ACYLATION | SHELLFISH | Fluorescent Dyes - chemistry | Microsomes - metabolism | Pyrans - chemical synthesis | Fatty Acids - chemistry | Click Chemistry | Triazoles - chemistry | Okadaic Acid - metabolism | Quinoxalines - chemistry | Structure-Activity Relationship | Pectinidae - metabolism | Acyl Coenzyme A - chemistry | Acyl Coenzyme A - chemical synthesis | Okadaic Acid - chemistry | Animals | Pyrans - chemistry | Pyrans - metabolism | Acyl Coenzyme A - metabolism | Fatty Acids - metabolism | Acylation | Enzymes | Thiols | Index Medicus
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5. Full Text Profiles and levels of fatty acid esters of okadaic acid group toxins and pectenotoxins during toxin depuration, Part I: Brown crab ( Cancer pagurus)
by Torgersen, Trine and Lindegarth, Susanne and Ungfors, Anette and Sandvik, Morten and Naturvetenskapliga fakulteten and Institutionen för marin ekologi and Institutionen för marin ekologi, Tjärnö marinbiologiska laboratorium and Faculty of Sciences and Göteborgs universitet and Gothenburg University and Department of Marine Ecology and Department of Marine Ecology, Tjärnö Marine Biological Laboratory
Toxicon, ISSN 0041-0101, 2008, Volume 52, Issue 3, pp. 407 - 417
In 2002, two outbreaks of diarrhetic shellfish poisoning (DSP) occurred in Norway, which was later confirmed to be caused by the consumption of brown crab ( )... 
DSP | Cancer pagurus | Fatty acid ester | Mytilus edulis | Blue mussel | Okadaic acid | Pectenotoxins | Brown crab | Depuration | PORTUGUESE BIVALVES | DSP TOXINS | NORWAY | SHELLFISH POISONING TOXINS | SECO ACID | BLUE MUSSELS | DINOPHYSISTOXIN-2 | LIQUID-CHROMATOGRAPHY | PHARMACOLOGY & PHARMACY | TOXICOLOGY | MUSSEL MYTILUS-GALLOPROVINCIALIS | CARCINUS-MAENAS | Brachyura - metabolism | Okadaic Acid - chemistry | Animals | Marine Toxins - chemistry | Marine Toxins - metabolism | Time Factors | Mytilus edulis - metabolism | Okadaic Acid - metabolism | Feeding Behavior | Molecular Structure | Fatty Acids - metabolism | Okadaic Acid - analogs & derivatives | Esters | Fatty acids | Food contamination | Analysis | Cancer | Index Medicus | dsp | liquid-chromatography | Biological Sciences | portuguese bivalves | blue mussel | seco acid | depuration | okadaic acid | pectenotoxins | dsp toxins | fatty acid ester | carcinus-maenas | dinophysistoxin-2 | blue mussels | Biologiska vetenskaper | norway | Farmakologi och toxikologi | cancer pagurus | Pharmacology and Toxicology | mytilus edulis | shellfish poisoning toxins | brown crab | mussel mytilus-galloprovincialis
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6. Full Text Electrochemical and photochemical approaches for the synthesis of the C28–C38 fragment of okadaic acid
by Dochain, Simon and Nshimyumuremyi, Jean-Boris and Dewez, Damien F and Body, Jean-François and Elias, Benjamin and Singleton, Michael L and Markó, István E
Tetrahedron, ISSN 0040-4020, 04/2019, Volume 75, Issue 15, pp. 2280 - 2283
Okadaic acid, a potent and selective inhibitor of Protein Phosphatases 1 and 2A (PP1 and PP2A), is widely used as a probe for various biochemical processes. We... 
Natural product | Okadaic acid | Suárez photochemical oxidation | Spiroketal | Electrochemical oxidation | CONCISE | TOXIN | CHEMISTRY, ORGANIC | IDENTIFICATION | DINOPHYSISTOXIN-2 | POLYETHER | Suarez photochemical oxidation | CONSTRUCTION | CONSEQUENCES | VINYLOGOUS URETHANE APPROACH | EFFICIENT | SUBUNIT | Phosphatases
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7. Full Text Ginsenoside Rg1 attenuates okadaic acid induced spatial memory impairment by the GSK3β/tau signaling pathway and the Aβ formation prevention in rats
by Song, Xiu-Yun and Hu, Jin-Feng and Chu, Shi-Feng and Zhang, Zhao and Xu, Shuang and Yuan, Yu-He and Han, Ning and Liu, Yan and Niu, Fei and He, Xin and Chen, Nai-Hong
European Journal of Pharmacology, ISSN 0014-2999, 06/2013, Volume 710, Issue 1-3, pp. 29 - 38
Ginsenoside Rg1, one of the major active ingredients isolated from Panax Ginseng, has been shown notable neuroprotective effects in memory impairment animals.... 
Ginsenoside Rg1 | Memory impairment | Okadaic acid | Aβ formation | Morris water maze | GSK3β/tau signaling pathway | PHOSPHORYLATION | ALZHEIMERS-DISEASE | PROTEIN PHOSPHATASE 2A | CELL-DEATH | GSK3 beta/tau signaling pathway | AMYLOID-BETA | IN-VIVO | MOUSE MODEL | HYPERPHOSPHORYLATED TAU-PROTEIN | PAIRED HELICAL FILAMENTS | PHARMACOLOGY & PHARMACY | A beta formation | Neuroprotective Agents - therapeutic use | Memory Disorders - metabolism | Rats | tau Proteins - metabolism | Glycogen Synthase Kinase 3 beta | Male | Ginsenosides - pharmacology | Hippocampus - drug effects | Okadaic Acid | Parietal Lobe - metabolism | Alzheimer Disease | Glycogen Synthase Kinase 3 - metabolism | Maze Learning - drug effects | Rats, Sprague-Dawley | Ginsenosides - therapeutic use | Hippocampus - metabolism | Animals | Memory Disorders - drug therapy | Neuroprotective Agents - pharmacology | Parietal Lobe - drug effects | Memory Disorders - chemically induced | Index Medicus
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8. Full Text Passive immunization targeting the N-terminal region of phosphorylated tau (residues 68–71) improves spatial memory in okadaic acid induced tauopathy model rats
by Subramanian, Sarada and Savanur, Ganesh and Madhavadas, Sowmya
Biochemical and Biophysical Research Communications, ISSN 0006-291X, 01/2017, Volume 483, Issue 1, pp. 585 - 589
Alzheimer's disease (AD) is the leading cause of dementia, characterized by progressive loss of memory and other cognitive functions. The cognitive impairment... 
Okadaic acid | Tau | Tauopathy | Alzheimer disease | Phosphopeptide | Spatial memory | PROTEIN-TAU | ALZHEIMERS-DISEASE | BIOCHEMISTRY & MOLECULAR BIOLOGY | ANTIBODY | PATHOLOGY | COGNITION | BIOPHYSICS | IMMUNOTHERAPY | MOUSE MODEL | PURIFICATION | DOMAINS | BRAIN | Recombinant Proteins - metabolism | Rabbits | Phosphorylation | Peptides - chemistry | Immunization - methods | Rats | Male | Rats, Sprague-Dawley | tau Proteins - chemistry | Hippocampus - metabolism | Okadaic Acid - chemistry | Animals | Protein Phosphatase 2 - metabolism | Protein Domains | Tauopathies - therapy | Female | Epitopes - chemistry | Spatial Memory | Tauopathies - chemically induced | Disease Models, Animal | Immunization | Phosphatases | Peptides | Memory | T cells | Health aspects | Alzheimer's disease | Antigenic determinants | Index Medicus
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9. Full Text Caffeic Acid Phenethyl Ester is a Potent and Specific Inhibitor of Activation of Nuclear Transcription Factor NF-κ B
by K. Natarajan and Sanjaya Singh and Terrence R. Burke and Dezider Grunberger and Bharat B. Aggarwal
Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, 8/1996, Volume 93, Issue 17, pp. 9090 - 9095
Caffeic acid phenethyl ester (CAPE), an active component of propolis from honeybee hives, is known to have antimitogenic, anticarcinogenic, antiinflammatory,... 
Phorbol esters | Hydroxyls | Transcription factors | DNA | Cell nucleus | Cell lines | Oligonucleotides | Ceramides | Antibodies | Esters | ceramide | tumor necrosis factor | okadaic acid | phorbol ester | hydrogen peroxide | TRANSFORMATION | INTACT-CELLS | PROTEIN | MULTIDISCIPLINARY SCIENCES | HUMAN-IMMUNODEFICIENCY-VIRUS | CAPE | TUMOR-NECROSIS-FACTOR | GROWTH | EXPRESSION | BINDING | T-CELLS | Cell Line | Okadaic Acid - pharmacology | NF-KappaB Inhibitor alpha | NF-kappa B - antagonists & inhibitors | Tetradecanoylphorbol Acetate - pharmacology | Phenylethyl Alcohol - analogs & derivatives | Humans | I-kappa B Proteins | Molecular Sequence Data | Caffeic Acids - pharmacology | Caffeic Acids - chemistry | Structure-Activity Relationship | Ceramides - pharmacology | DNA-Binding Proteins - metabolism | Phenylethyl Alcohol - pharmacology | Tumor Necrosis Factor-alpha - pharmacology | Base Sequence | Protein Binding | Histiocytes - cytology | Phosphorylation - drug effects | Phenylethyl Alcohol - chemistry | Index Medicus
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10. Full Text Synthesis and neuroprotective activity of analogues of glycyl- l-prolyl- l-glutamic acid (GPE) modified at the α-carboxylic acid
by Trotter, Nicholas S and Brimble, Margaret A and Harris, Paul W.R and Callis, David J and Sieg, Frank
Bioorganic & Medicinal Chemistry, ISSN 0968-0896, 2005, Volume 13, Issue 2, pp. 501 - 517
The synthesis of nine GPE* analogues, wherein the α-carboxylic acid group of glutamic acid has been modified, is described by coupling readily accessible... 
Proline | Peptides | Neuroprotective agents | GPE | IGF-I | CHEMISTRY, MEDICINAL | BIOCHEMISTRY & MOLECULAR BIOLOGY | CHEMISTRY, ORGANIC | peptides | GLYCINE-PROLINE-GLUTAMATE | ADULT-RATS | N-TERMINAL TRIPEPTIDE | BINDING-PROTEINS | proline | neuroprotective agents | BIOLOGICAL-ACTIVITY | HYPOXIC-ISCHEMIC INJURY | RAT-BRAIN | PEPTIDE-SYNTHESIS | GROWTH-FACTOR-I | Oligopeptides - chemical synthesis | Glutamic Acid - pharmacology | Models, Chemical | Rats, Wistar | Okadaic Acid - antagonists & inhibitors | Cells, Cultured | Rats | Corpus Striatum - cytology | Neuroprotective Agents - chemical synthesis | Animals | Neuroprotective Agents - pharmacology | Glutamic Acid - analogs & derivatives | Glutamic Acid - chemical synthesis | Female | Molecular Structure | Neurons - drug effects | Oligopeptides - pharmacology | Index Medicus
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11. Full Text Disposable poly (o-aminophenol)-carbon nanotubes modified screen print electrode-based enzyme sensor for electrochemical detection of marine toxin okadaic acid
by Zhou, Jie and Qiu, Xianxin and Su, Kaiqi and Xu, Gaixia and Wang, Ping
Sensors & Actuators: B. Chemical, ISSN 0925-4005, 11/2016, Volume 235, pp. 170 - 178
Based on the inhibition of okadaic acid (OA) on protein phosphatase 2A (PP2A), we developed disposable poly- -aminophenol-carbon nanotubes (PoAP-CNTs) modified... 
Okadaic acid (OA) | Carbon nanotubes (CNTs) | Poly (o-aminophenol) (PoAP) | Protein phosphatase 2A (PP2A) inhibition | Electrochemical detection | ELECTROCHEMISTRY | AMPEROMETRIC IMMUNOSENSOR | MICROCYSTIN-LR | CHEMISTRY, ANALYTICAL | LIPOPHILIC TOXINS | ULTRASENSITIVE DETECTION | CARBON NANOTUBES | PROTEIN PHOSPHATASES | MOUSE BIOASSAY | INSTRUMENTS & INSTRUMENTATION | SHELLFISH | LC-MS/MS ANALYSIS | MUSSEL SAMPLE | Enzymes | Sensors | Marine toxins | Nanotubes | Electric properties | Biomedical engineering | Electrodes | Inhibition | Assessments | Screens | Prints
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12. Full Text In vitro bioaccessibility of the marine biotoxin okadaic acid in shellfish
by Braga, Ana C and Alves, Ricardo N and Maulvault, Ana L and Barbosa, Vera and Marques, António and Costa, Pedro R
Food and Chemical Toxicology, ISSN 0278-6915, 03/2016, Volume 89, pp. 54 - 59
Okadaic acid (OA) and their derivatives are marine toxins responsible for the human diarrhetic shellfish poisoning (DSP). To date the amount of toxins ingested... 
Okadaic acid | Diarrhetic shellfish poisoning | Clams | Toxicity | Mussels | Dinophysistoxins | PORTUGAL | HEAVY-METALS | FOOD SCIENCE & TECHNOLOGY | ORAL BIOACCESSIBILITY | BIVALVES | DIGESTION | TRACE-ELEMENTS | POISONING TOXINS | FISH | TOXICOLOGY | CONSUMERS | Tandem Mass Spectrometry | Animals | Okadaic Acid - pharmacokinetics | Chromatography, Liquid | Biological Availability | In Vitro Techniques | Marine Toxins - pharmacokinetics | Shellfish - analysis | Safety and security measures | Marine toxins | Digital signal processors | Analysis | Food contamination | Seafood | Poisoning | Contamination | Food | Index Medicus
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13. Full Text Isolation and characterization of an enzyme from the Greenshell™ mussel Perna canaliculus that hydrolyses pectenotoxins and esters of okadaic acid
by MacKenzie, Lincoln A and Selwood, Andrew I and Marshall, Craig
Toxicon, ISSN 0041-0101, 09/2012, Volume 60, Issue 3, pp. 406 - 419
An enzyme capable of hydrolysing pectenotoxins (PTXs) and okadaic acid (OA) esters within the hepatopancreas of the Greenshellâ„¢ mussel was isolated and... 
Hydrolysis | Esterase | Perna canaliculus | Pectenotoxin | Okadaic acid esters | Hepatopancreas | PROFILES | NEW-ZEALAND | PART II | TANDEM MASS-SPECTROMETRY | MYTILUS-EDULIS | IDENTIFICATION | SECO ACID | GALLOPROVINCIALIS | DIARRHETIC SHELLFISH TOXIN | PHARMACOLOGY & PHARMACY | TOXICOLOGY | DINOFLAGELLATE DINOPHYSIS-ACUTA | Furans - metabolism | Molecular Weight | Carboxylic Ester Hydrolases - chemistry | Species Specificity | Okadaic Acid - metabolism | Substrate Specificity | Hepatopancreas - enzymology | Sequence Homology | Pyrans - metabolism | Insect Proteins - metabolism | Okadaic Acid - analogs & derivatives | Amino Acid Sequence | Peptide Fragments - metabolism | Marine Toxins - metabolism | Esterases - chemistry | Peptide Fragments - isolation & purification | Perna - enzymology | Esterases - metabolism | Esterases - isolation & purification | New Zealand | Peptide Fragments - chemistry | Animals | Tribolium - enzymology | Insect Proteins - chemistry | Kinetics | Hydrogen-Ion Concentration | Index Medicus
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14. Full Text Selection and identification of DNA aptamers against okadaic acid for biosensing application
by Eissa, Shimaa and Ng, Andy and Siaj, Mohamed and Tavares, Ana C and Zourob, Mohammed
Analytical Chemistry, ISSN 0003-2700, 12/2013, Volume 85, Issue 24, pp. 11794 - 11801
This work describes the selection and identification of DNA aptamers that bind with high affinity and specificity to okadaic acid (OA), a lipophilic marine... 
IMPEDANCE BIOSENSOR | PROTEIN PHOSPHATASE INHIBITOR | GOLD | CHEMISTRY, ANALYTICAL | LIGANDS | TOXIN | IMMUNOSENSOR | SHELLFISH | SENSORS | Aptamers, Nucleotide - genetics | Biosensing Techniques - methods | Aptamers, Nucleotide - metabolism | Okadaic Acid - analysis | Base Sequence | Okadaic Acid - metabolism | Electrodes | Fluorescence | Usage | DNA testing | Electron transport | Analysis | Toxins | Identification | Immunology | Deoxyribonucleic acid--DNA | Index Medicus | Self assembly | Gold | Deoxyribonucleic acid | Constants | Affinity | Nanostructure | Electrochemical impedance spectroscopy
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