| chemical ablation: Mauthner neuron |
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| Name: | chemical ablation |
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| Synonyms: | |
| Definition: | Experimental condition which uses a chemical to ablate an anatomical structure or cell. |
| Ontology: | Zebrafish Environment Condition Ontology [ZECO:0000169] |
| Name: | Mauthner neuron |
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| Synonyms: | |
| Definition: | Is a hindbrain interneuron. Giant reticulospinal neurons possessing thick crossed axons and positioned dorsally in the hindbrain tegmentum at the level of entrance of the eighth cranial nerve. The Mauthner neuron is paired. The M-cell has two large invariant dendrites: The lateral dendrite terminates in the sensory neuropil of the acoustico-lateral area, and the ventral dendrite terminates in the neuropil of the motor tegmentum. Fine dendrites are present, and mostly arise from three regions; from the terminus of each major dendrite and from the ventral surface of the perikaryon. |
| Ontology: | Anatomy Ontology [ZFA:0009149] |
| chemical treatment by environment: metronidazole |
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| Name: | chemical treatment by environment |
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| Synonyms: | |
| Definition: | Chemical treatment condition in which the chemical is introduced through the environment. For zebrafish this is the tank water. |
| Ontology: | Zebrafish Environment Condition Ontology [ZECO:0000238] |
| Name: | metronidazole |
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| Synonyms: | 1-(2-hydroxy-1-ethyl)-2-methyl-5-nitroimidazole, 1-(2-hydroxyethyl)-2-methyl-5-nitroimidazole, 1-(beta-ethylol)-2-methyl-5-nitro-3-azapyrrole, 1-(beta-hydroxyethyl)-2-methyl-5-nitroimidazole, 1-(beta-oxyethyl)-2-methyl-5-nitroimidazole, 2-(2-methyl-5-nitro-1H-imidazol-1-yl)ethanol, 2-methyl-1-(2-hydroxyethyl)-5-nitroimidazole, 2-methyl-3-(2-hydroxyethyl)-4-nitroimidazole, 2-methyl-5-nitroimidazole-1-ethanol, metronidazol, metronidazole, metronidazolum |
| Definition: | A member of the class of imidazoles substituted at C-1, -2 and -5 with 2-hydroxyethyl, nitro and methyl groups respectively. It has activity against anaerobic bacteria and protozoa, and has a radiosensitising effect on hypoxic tumour cells. It may be given by mouth in tablets, or as the benzoate in an oral suspension. The hydrochloride salt can be used in intravenous infusions. Metronidazole is a prodrug and is selective for anaerobic bacteria due to their ability to intracellularly reduce the nitro group of metronidazole to give nitroso-containing intermediates. These can covalently bind to DNA, disrupting its helical structure, inducing DNA strand breaks and inhibiting bacterial nucleic acid synthesis, ultimately resulting in bacterial cell death. |
| Ontology: | ChEBI [CHEBI:6909] ( EBI ) |