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EnglishThe acute oral toxicity of palytoxin (PLTX), a highly toxic compound associated with seafood intoxication in tropical and subtropical areas, was investigated in mice. After gavage administration (300-1697 µg/kg) to groups of 5 female CD-1 mice, signs of toxicity and lethality were recorded for 24 h. The LD50 was 767 µg/kg (95% confidence limits: 549-1039 µg/kg) and the main symptoms observed were scratching, jumping, respiratory distress and paralysis. Hematoclinical analyses showed increased levels of creatine phosphokinase and lactate dehydrogenase at doses of 600 µg/kg and above, and aspartate transaminase at 848 µg/kg and above. Histological analysis revealed acute inflammation of the forestomach in mice surviving up to 24h after administration (424-1200 µg/kg). Other histological alterations were observed in the liver and pancreas, while cardiac and skeletal muscle cells revealed only ultrastructural alterations visible by transmission electron microscopy.
| Titolo: | Palytoxin toxicity after acute oral administration in mice |
| Autori: | |
| Data di pubblicazione: | 2009 |
| Rivista: | |
| Abstract: | The acute oral toxicity of palytoxin (PLTX), a highly toxic compound associated with seafood intoxication in tropical and subtropical areas, was investigated in mice. After gavage administration (300-1697 µg/kg) to groups of 5 female CD-1 mice, signs of toxicity and lethality were recorded for 24 h. The LD50 was 767 µg/kg (95% confidence limits: 549-1039 µg/kg) and the main symptoms observed were scratching, jumping, respiratory distress and paralysis. Hematoclinical analyses showed increased levels of creatine phosphokinase and lactate dehydrogenase at doses of 600 µg/kg and above, and aspartate transaminase at 848 µg/kg and above. Histological analysis revealed acute inflammation of the forestomach in mice surviving up to 24h after administration (424-1200 µg/kg). Other histological alterations were observed in the liver and pancreas, while cardiac and skeletal muscle cells revealed only ultrastructural alterations visible by transmission electron microscopy. |
| Handle: | http://hdl.handle.net/11368/2290916 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.toxlet.2009.09.009 |
| Appare nelle tipologie: | 1.1 Articolo in Rivista |
