Linked Life Data

3826007

Source:http://linkedlifedata.com/resource/pubmed/id/3826007

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1987-4-6
pubmed:abstractText
The value of Cefinase (BBL Microbiology Systems, Cockeysville, M.D.) disks in predicting penicillin responses of coagulase-negative staphylococci was studied with the use of clinical isolates. The beta-lactamase activity of each isolate was determined both before and after enzyme induction for 18-24 hours with a 5-micrograms methicillin disk. Penicillin responses were determined in microdilution minimum inhibitory concentration (MIC) panels after 18 hours of incubation at 35 degrees C. Of 485 isolates tested, 338 (70%) were beta-lactamase positive, 168 (35%) before and 170 (35%) after induction. Only two (0.6%) of these isolates had a penicillin MIC of less than or equal to 0.12 microgram/mL (less than or equal to 0.12 mg/L). Of the 147 Cefinase-negative isolates, penicillin MICs of 0.12 microgram/mL or less (less than or equal to 0.12 mg/L) and 0.25 microgram/mL or more (greater than or equal to 0.25 mg/L) were obtained from 110 (75%) and 37 (25%), respectively. Although Staphylococcus saprophyticus accounted for only 30 (6%) of the total isolates, 54% of the organisms that were beta-lactamase negative with penicillin MICs of greater than or equal to 0.25 microgram/mL (greater than or equal to 0.25 mg/L) belonged to that species. A positive Cefinase test accurately predicted elevated penicillin MICs, but a negative test, especially with S. saprophyticus, was of less value.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0002-9173
pubmed:author
pubmed:issnType
Print
pubmed:volume
87
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
399-402
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Problems encountered in using Cefinase disks to predict in vitro penicillin susceptibility of coagulase-negative staphylococci.
pubmed:publicationType
Journal Article