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Toxicity of Halogenated Oxyquinolines in Dogs. A Clinical Study
III. Intoxication Experiments
Acta Veterinaria Scandinavica volume 15, pages 398–418 (1974)
Abstract
LANNEK, BIRGITTA and PAUL LINDBERG: Toxicity of halogenated oxyquinolines in dogs. A clinical study. III. Intoxication experiments. Acta vet. scand. 1974, 15, 398–418. — Oxyquinoline drugs, which are normally well tolerated by dogs, will cause disease when a dog’s resistance is occasionally lowered. In a series of experiments in dogs we tried to reproduce the disease pattern of spontaneous cases of poisoning. Most of these experiments, using even high single or repeated oral doses, failed. It was observed, more or less by chance, that the intestinal absorption of 125I-labelled vioform was greatly increased when the dog was not fasted. The consumption of fat, but not of protein or carbohydrates, was found to be the responsible factor. When the oxyquinoline drug was given in a fat emulsion, approx. 1/3 of the dogs fell ill. When fouled fish was also added, the dose necessary to produce disease was lowered to the range used in vioform therapy. We believe that phenolic substances, which may be produced from bacterial degradation of proteins in intestinal disorders, compete with oxyquinolines in metabolic and elimination processes.
vioform; oxyquinolines; dogs; convulsions; heart injury; liver injury; poisoning; diarrhoea; phenolic substances.
Sammanfattning
Toxiciteten av halogenerade oxikinoliner hos hund. En klinisk studie. III. Intoxikationsförsök.
Oxikinolinpreparat, vilka normalt tolereras väl av hundar, kan framkalla sjukdom när hundens resistens tillfälligt är minskad. Författarna har försökt framkalla sjukdomsmönstret vid spontan oxikinolinförgiftning i en försöksserie på hundar. Flertalet av dessa försök, även med enstaka eller upprepade höga doser givna per os, misslyckades. Av en tillfällighet observerades, att absorptionen från tarmen av 125J-märkt vioform ökade, när hundarna hade ätit strax före givan. Intagandet av fett, men ej protein eller kolhydrat, visade sig vara den ansvariga faktorn. När oxikinolin gavs i en fettemulsion, insjuknade ungefär 1/3 av hundarna. Tillsattes rutten strömming, kunde den sjukdomsframkallande dosen sänkas till samma nivå som vid spontan vioformförgiftning. Författarna anser, att substanser av fenolkaraktär, vilka bildas genom nedbrytning av proteiner vid tarmåkommor, „tävlar“ med oxikinolinerna vid nedbrytning och elimination.
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Supported by grants from the Swedish Medical Research Gouncil.
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Lannek, B., Lindberg, P. Toxicity of Halogenated Oxyquinolines in Dogs. A Clinical Study. Acta Vet Scand 15, 398–418 (1974). https://doi.org/10.1186/BF03547467
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DOI: https://doi.org/10.1186/BF03547467