Abstract
Morphologic changes in Campylobacter fetus ssp. jejuni were evaluated as cultivated on thioglycollute broth, containing minimum of 0.1, 1,3 and 10 Ampiciline minimal inhibitory concentration (MIC). During the first four hours of incubation, no changes occured in the presence of 0.1 MIC; but with the rest of the ampiciline dosis, even at the first hour, a proportion larger than 5% of filament-policurved forms was found, and it increased with the incubation time. The greatest number of altered bacteria was found with the u se of 10 MIC. No other morphologic changes were observed.References
Buck, G. E.; K. A. Parshall & C. P. Davis. 1983. Electron microscopy of the coccoid form of Campylobacter jejuni J. Clin. Microbiol. 18: 420-421.
Chow, A. W.; V. Patten & D. Bednorz. 1978. Susceptibility of Campylobacter fetus to twenty-two antimicrobial agent s. Antimicrob. Agents. Chemother. 13: 416-518.
Editorial. 1982. Campylobacter esteritis. Lancet. 2: 1437-1438.
Gardner, A.D. 1 940. Morphological effects of penicillin on bacteria. Nature, 146: 837-838.
Fleming, A.; A. Vourek & I. R. H. Kramer. 1950. The morphology and motivility of Proteus vulgaris and organisms cultured in the presence of penicillin. J. Gen. Microbiol. 4: 257-267.
Hernández, F.; M.L. Herrera; P. Rivera & R.M. Rodríguez. 1984. Alteraciones morfológicas ocurridas espontáneamente en cultivos de Campylobacter fetus ssp jejuni Rev. Costo Cienc. Med. 5: 61-70.
Hernández, F.; L. Cipagauta; P. Rivera; M.L. Herrera & R.M. Rodríguez. 1985. Estudio ultraestructural de Campylobacter fetus ssp jejuni Rev. Latinoamer. Microbiol. 27: 11-20.
Karmali, M .A. & P.C. Fleming. 1979. Campylobacter enteritis CMAJ. 120: 1525-1532.
Klein, R.O. & G.H. Luginbuhl. 1977. Ampicillin induced morphological alterations of Haemophilus influenzae type B. Antimicrob. Agents Chemother. 11: 559-563.
Richardson, N.J.; H.J. Koornhof & V. D. Bokkenheuser. 1981. Long-term infections with Campylobacter fetus subsp jejuni J. Clin. Microbiol., 13: 846-849.
Rodríguez, R.M.; P. Rivera; M.L. Herrera & F. Hernández. 1985. Antibiótico sensibilidad en Campylobacter fetus ssp jejuni. Rev. Hosp. Nal. Niños. (En prensa).
Schockman, G.D.; I. Daneo-Moore, J.B. Cornett & M. Mychajlonka. 1979. Does penicillin kill bacteria? Rev. Infect. Dis. 1: 787-796.
Smalley, D.L.; P.A. Jaques; D.D. Ourth & J. Layne. 1980. Antibiotic-induced filament formation of Legionella peneumophila. Amer. J. Clin. Pathol. 74: 488-495.
Staugaard, P.M., F.M. Vanden-Berg, C. L. Woldringh & N. Nanninga. 1976. Localization of ampicillinsensitive sites in Escherichia coli by electron microscopy. J. Bacteriol., 127: 1376-1381.
Svedhem , A.; B. Kaijser & E. Sjogren. 1981. Antimicrobial susceptibility of Campylobacter jejuni isolated from human with diarrhea and from healthy chickens. 1. Antimicrob. Chem. 7: 301-305.
Tipper, D.J. 1979. Mode of action of Bactam antibiotics. Rev. lnfect. Dis. 1: 39-53.
Tomasz, A. 1979 a. From penicillin-binding proteins to the Iysis and death of bacteria: A 1979 View. Rev. Infect. Dis. 1: 434-464.
Tomasz, A. 1979 b. The mechanism of the irreversible antimicrobial effects of penicillins: How the betalactam antibiotics kill and Iyse bacteria. Ann. Rev. Microbiol., 33: 113-137.
Vanhoof, R., B. Gordts, R. Dierick, H. Coignau & J .P. Butzler. 1980. Bacteriostatic and bactericidal activities of 24 Antimicrobial agents against Campylobacter fetus subsp. jejuni Antimicrob. Agents Chemother. 18: 118-121.
Vanhoof, R.H. Goossens, H. Coignau, G. Stas. & J.P. Butzler. 1982. Susceptibility pattern of Campylobacter jejuni from human and animal origins to different antimicrobial agents. Antimicrob. Agents Chemother. 21: 990-992.
Comments
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 1986 Revista de Biología Tropical