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Ototoxicity assessment of a gentamicin sulfate otic preparation in dogs.
1995
Strain G.M. | Merchant S.R. | Neer T.M. | Tedford B.L.
Vestibulotoxic and ototoxic effects often are seen after long-term, high-dose systemic treatment with gentamicin, but toxic effects after topical use have not been reported in animals, to the authors' knowledge. Vestibular and auditory effects of twice daily otic gentamicin treatment for 21 days were evaluated in 10 dogs with intact tympanic membranes and in the same 10 dogs after experimental bilateral myringotomy. Each dog served as its own control; 7 drops of gentamicin sulfate (3 mg/ml in a buffered aqueous vehicle) were placed in 1 ear, and 7 drops of vehicle were placed in the opposite ear. Treatment and control ears were reversed after myringotomy. Vestibular function was evaluated daily by neurologic examination and behavioral assessment Auditory function was evaluated twice weekly by determination of brain stem auditory evoked potentials. Gentamicin sulfate placed in the ear of clinically normal dogs with intact or ruptured tympanic membranes, in the quantities used in this study, did not induce detectable alteration of cochlear or vestibular function. Serum gentamicin concentration after 21 days of treatment was detectable in only 2 dogs and was an order of magnitude below documented toxic concentrations.
Afficher plus [+] Moins [-]Permeability properties of skeletal muscle ATP-sensitive K plus channels reconstituted into planar lipid bilayer
1992
Ryu, p. D. (Seoul Nat'l Univ., Suwon (Korea Republic). Coll. of Veterinary Medicine)
Relationships between in-vitro virulence-associated characteristics, plasmid-bearing and production of outer membrane protein(OMP) of Yersinia enterocolitica isolated from pigs
1992
Park, S.G. (Seoul Metropolitan Government Inst. of Health and Environment, Seoul (Korea Republic). ) | Choi, C.S. (Chungang Univ., Seoul (Korea Republic). Coll. of Medicine) | Jeon, Y.S. (Seoul Nat'l Univ., suwon (Korea Republic). Coll. of Veterinary Medicine)
