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OCCURRENCE OF TETRODOTOXIN AND PARALYTIC SHELLFISH TOXINS IN Phallusia nigra (TUNICATA, ASCIDIACEA) FROM THE BRAZILIAN COAST J. Venom. Anim. Toxins
FREITAS,J. C.; OGATA,T.; VEIT,C.H.; KODAMA,M..
We have already shown the presence of guanidine neurotoxins in calcareous red algae and mussels collected in the São Sebastião channel (State of São Paulo, Brazil). It is known that these neurotoxins comprise more than 25 analogues such as tetrodotoxin (TTX) and derivatives plus the paralytic shellfish toxins (PST) found in a variety of marine, freshwater and amphibious species. Filter feeding animals generally possess large amounts of these neurotoxins. The tunicates are sessil marine animals with a high rate of sea water filtration. The tunics and siphons of 50 specimens of Phallusia nigra were dissected and the visceral organs were immersed in methanol containing acetic acid 0.02 N pH 5.0. The extract was prepared by homogenization, filtration and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phallusia nigra; Tunicate; Paralytic shellfish toxins; Tetrodotoxin.
Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100004
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Biomedical and pharmacological potential of tetrodotoxin-producing bacteria isolated from marine pufferfish Arothron hispidus (Muller, 1841) J. Venom. Anim. Toxins incl. Trop. Dis.
Bragadeeswaran,S; Therasa,D; Prabhu,K; Kathiresan,K.
Specimens of the pufferfish Arothron hispidus collected at Parangipettai, on the southeast coast of India, were subjected to bacterial isolation and identification. Three species were identified, namely Bacillus sp., Kytococcus sedentarius and Cellulomonas fimi. Partially-purified microbial filtrates exhibited hemolytic activity on chicken and human erythrocytes of O, B and AB blood groups, with maximum activity of 32 HU. The microbial filtrates also presented ATPase, Mg2+-ATPase, Na+K+-ATPase and AchE enzymatic activities of positive neuromodulation in Kytococcus sedentarius with 1300, 300.1, 1549.98 and 140.55%, in Cellulomonas fimi with 620, 300, 10 and 128.42%, and in Bacillus species with 40, 200, 849.98 and 158.69%, respectively. Toxicity symptoms...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arothron hispidus; Tetrodotoxin; Bioassay; ATPase and AchE enzymatic activities; Anticancer activity.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000300008
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Poisoning after ingestion of pufferfish in Brazil: report of 11 cases J. Venom. Anim. Toxins incl. Trop. Dis.
Simões,Eneida Márcia de Souza; Mendes,Thelma Marly Abreu; Adão,Angelino; Haddad Junior,and Vidal.
In this brief communication the authors report eleven cases of human poisoning caused by ingestion of pufferfish meat. Three patients (two children and one adult) were seriously affected. The circumstances that precipitated the poisoning are discussed as well as the clinical aspects observed. No deaths were registered and the patients did not present sequelae after the episode.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Pufferfish; Marine poisonings; Poisonous animals; Poisonous fish; Tetrodotoxin.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992014000200105
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Scorpion envenomation in pygmies from Democratic Republic of Congo, the example of Pelenge Center, Lomela, DRC J. Venom. Anim. Toxins incl. Trop. Dis.
Biezakala Mudiandambu,E; Odio Wobin,T; Kabele Ngiefu,C; Tati Kinkela,R; Mbanzulu Makola,K.
In a survey among the pygmies of central Democratic Republic of Congo, the incidence of scorpion stings seemed very high with a severity greater than expected. Species responsible were not identified. Specific studies are needed to clarify the risk emerging in the equatorial African forest.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Arothron hispidus; Tetrodotoxin; Bioassay; ATPase and AchE enzymatic activities; Anticancer activity.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000400015
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Oxidative stress and hepatotoxicity in rats induced by poisonous pufferfish (Lagocephalus lagocephalus) meat J. Venom. Anim. Toxins incl. Trop. Dis.
Saoudi,M; Abdelmouleh,A; Ellouze,F; Jamoussi,K; El Feki,A.
This study was undertaken to evaluate the effect of pufferfish (Lagocephalus lagocephalus) meat poisoning on hepatic functions of Wistar rats. For this purpose, groups of rats (Lcr, Lcu+b and Lcu-b) received diet supplemented with 10% of raw or cooked meat, respectively, with or without cooking water of L. lagocephalus while groups Mcr and Mcu+b received diet supplemented with 10% of raw or cooked meat of Liza aurata, which were used as a negative control. In Lcu+b group, ALT, AST and ALP rates (hepatic enzyme markers) decreased after two months of treatment, indicating liver damage. We also observed an increase of 54 and 65% of thiobarbituric acid reactive substances (TBARS) in their livers respectively 48 hours and two months after treatment compared to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hepatotoxicity; Lagocephalus lagocephalus; Oxidative stress; Tetrodotoxin.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000300006
Registros recuperados: 5
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