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M94A0073.TXT
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1994-10-01
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Document 0073
DOCN M94A0073
TI Activity of antimicrobial drugs evaluated by agar dilution and
radiometric methods against strains of Nocardia asteroides isolated in
Italy from immunocompromised patients.
DT 9412
AU Scopetti F; Iona E; Fattorini L; Goglio A; Franceschini N; Amicosante G;
Orefici G; laboratorio di Batteriologia e Micologia Medica, Istituto;
Superiore di Sanita, Rome, Italy.
SO J Chemother. 1994 Feb;6(1):29-34. Unique Identifier : AIDSLINE
MED/94351347
AB Benzylpenicillin, amoxicillin, amoxicillin plus clavulanic acid,
cephalothin, cephaloridine, cefotaxime, imipenem, erythromycin,
clarithromycin, azithromycin, amikacin, ciprofloxacin and
trimethoprim-sulfamethoxazole were tested in vitro by the agar dilution
method against eleven strains of Nocardia asteroides isolated both from
AIDS and other immunocompromised patients. Imipenem, amikacin and
trimethoprim-sulfamethoxazole were shown to be the most active drugs
with minimum inhibitory concentrations (MIC) values nearly always lower
than concentrations achievable in blood. Ciprofloxacin, cephaloridine
and cefotaxime were moderately active, while the remaining drugs were
totally ineffective. When susceptibility was assessed by the radiometric
method the MIC90 values were uniformly lower than those in the agar
method, possibly due to lower inactivation of drugs during incubation.
The two methods showed a good correlation only for imipenem, amikacin
and ciprofloxacin. The results obtained by the radiometric method seem
to indicate that, as for mycobacteria, this method may also give a more
accurate evaluation of the antimicrobial susceptibility of Nocardiae.
DE Acquired Immunodeficiency Syndrome/IMMUNOLOGY/MICROBIOLOGY
Antibiotics/*PHARMACOLOGY Carbon Dioxide/ANALYSIS/METABOLISM Carbon
Radioisotopes Comparative Study Human *Immunocompromised Host
Microbial Sensitivity Tests Nocardia asteroides/*DRUG
EFFECTS/METABOLISM Nocardia Infections/*IMMUNOLOGY/*MICROBIOLOGY
Radiometry Support, Non-U.S. Gov't JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).