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At least 739 records · Page 41Linked to original sources
PubMed1982

The avermectins: A new family of antiparasitic agents.

The avermectins are macrocyclic lactones produced by fermentation of the soil micro-organism Streptomyces avermitilis. They show activity against a broad range of nematodes and arthropod parasites of domestic animals at dose rates of 300 microgram/kg or less. Unlike the macrolide or polyene antibiotics, they lack significant antibacterial or antifungal activity. By oral or parenteral administration, avermectins are active against gastrointestinal nematodes and lungworms, and important ectoparasites such as lice, mange mites, ticks and larval stages of flies. They show excellent activity against parasites resistant to existing anthelmintics or ectoparasiticides. The avermectins appear to cause paralysis of nematodes and arthropods by opening gamma-aminobutyric acid-mediated chloride channels at the neuromuscular junction.

Animals↗
PubMed1983

Anaerobic bacteria associated with osteomyelitis in domestic animals.

Specimens of bony tissue or adjacent soft tissue from 19 animals with osteomyelitis were cultured aerobically and anaerobically. Fourteen specimens (74%) yielded anaerobic bacteria in pure culture or mixed with aerobic or facultative anaerobic bacteria. The most predominant genus encountered was an obligate anaerobe, Bacteroides. The most frequently isolated Bacteroides species was Bacteroides asaccharolyticus, which was isolated 5 times. The most frequently isolated anaerobe was Peptostreptococcus anaerobius, which was isolated 6 times. Staphylococcus aureus and Escherichia coli were the most frequently isolated aerobic bacteria, with 7 and 6 isolates, respectively.

Animals↗
PubMedDate not supplied

Atypical Addison's disease in the dog: a retrospective survey of 14 cases.

Fourteen dogs diagnosed with Addison's disease and having atypical serum electrolyte levels are described. Seventy-eight percent were female, and most showed signs of inappetence, weakness, or vomiting. Ninety-three percent of the cases had either hyponatremia without hyperkalemia or normal serum electrolyte concentrations. Hemogram features were variable and were not useful in suggesting a diagnosis of hypoadrenocorticism. The results of this study show that normal or mild serum electrolyte changes in a dog with clinical signs compatible with Addison's disease should not exclude this diagnosis from consideration. Definitive diagnosis depends on the demonstration of inadequate adrenocortical response to adrenocorticotropic hormone (ACTH) stimulation.

Addison Disease↗
PubMed1991

Inflammatory middle ear disease of the dog: the clinical and pathological features of cholesteatoma, a complication of otitis media.

During a study of inflammatory middle ear disease in the dog cholesteatoma was found to accompany otitis media in seven of the 62 ears examined (11 per cent). The clinical, radiological and pathological findings in these animals imply that cholesteatoma in the dog is an aggressive lesion which must be differentiated from uncomplicated otitis media.

Animals↗