Abstract:
:Resistance to extended-spectrum β-lactam antibiotics has led to a greater reliance upon carbapenems, but the expression of carbapenemases threatens to limit the utility of these drugs. Current methods to detect carbapenemase activity are suboptimal, requiring prolonged incubations during which ineffective therapy may be prescribed. We previously described a sensitive and specific assay for the detection of carbapenemase activity using ertapenem and liquid chromatography-tandem mass spectrometry (LC-MS/MS). In this study, we assessed 402 Gram-negative rods, including both Enterobacteriaceae and non-Enterobacteriaceae expressing IMP, VIM, KPC, NDM, and/or OXA carbapenemases, by using imipenem, meropenem, and ertapenem with LC-MS/MS assays. LC-MS/MS methods for the detection of intact and hydrolyzed carbapenems from an enrichment broth were developed. No ion suppression was observed, and the limits of detection for all three drugs were below 0.04 μg/ml. The sensitivity and specificity of meropenem and ertapenem for carbapenemase activity among non-Enterobacteriaceae were low, but imipenem demonstrated a sensitivity and specificity of 96% and 95%, respectively, among all Gram-negative rods (GNR) tested, including both Enterobacteriaceae and non-Enterobacteriaceae. LC-MS/MS allows for the analysis of more complex matrices, and this LC-MS/MS assay could easily be adapted for use with primary specimens requiring growth enrichment.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Kulkarni MV,Zurita AN,Pyka JS,Murray TS,Hodsdon ME,Peaper DRdoi
10.1128/JCM.00547-14subject
Has Abstractpub_date
2014-07-01 00:00:00pages
2500-5issue
7eissn
0095-1137issn
1098-660Xpii
JCM.00547-14journal_volume
52pub_type
杂志文章abstract::A nonpigmented rapidly growing mycobacterium was isolated from wound liquid outflow, bone tissue biopsy, and excised skin tissue from a 31-year-old woman who suffered an accidental open right tibia fracture and prolonged stay in a river. The three isolates grew in 3 days at 24 to 37 degrees C. 16S rRNA sequence analys...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.44.4.1268-1273.2006
更新日期:2006-04-01 00:00:00
abstract::A modified CAMP test was used to identify 973 Vibrio cholerae isolates by phenotype. Eltor and non-O1 strains were CAMP positive; classical strains were CAMP negative. Sausage-shaped zones of hemolysis of eltor strains were easily distinguished from narrower bands of non-O1 isolates. For O1 isolates, there was 100% ag...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.32.1.235-237.1994
更新日期:1994-01-01 00:00:00
abstract::Rapid and accurate identification of mycobacterial species is essential for patient management. We describe the use of the Invader assay in conjunction with the BACTEC MGIT 960 system that together provide an efficient procedure for clinical use. This assay discriminates single-base differences (e.g., genotyping singl...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02289-06
更新日期:2007-10-01 00:00:00
abstract::We determined the types of cholera toxin (CT) produced by a collection of 185 Vibrio cholerae O1 strains isolated in Bangladesh over the past 45 years. All of the El Tor strains of V. cholerae O1 isolated since 2001 produced CT of the classical biotype, while those isolated before 2001 produced CT of the El Tor biotyp...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01304-06
更新日期:2006-11-01 00:00:00
abstract::A rapid and accurate method to identify the species and antibiotic resistance of Candida spp. in blood is vital to increase the survival rates of patients with bloodstream infections. However, the extremely low levels of Candida spp. in blood make rapid diagnosis by standard blood culture difficult. In this study, we ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00057-20
更新日期:2020-03-25 00:00:00
abstract::An immunofluorescence assay (IFA) for the detection of immunoglobulin G antibodies directed against Helicobacter pylori was evaluated by comparing 20 serum specimens from patients with a positive urease test on biopsy material and 20 serum specimens from patients with a negative test and with defined clinical symptoms...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.29.2.323-327.1991
更新日期:1991-02-01 00:00:00
abstract::A direct and an indirect enzyme immunoassay (EIA) were evaluated against a standard of electron microscopy after direct ultracentrifugation of the specimen for their performances in detecting rotaviruses. The indirect EIA had variable background activity which influenced test specificity. The indirect EIA control (tes...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.16.1.53-59.1982
更新日期:1982-07-01 00:00:00
abstract::Candidate live-virus vaccines for respiratory syncytial virus are being developed and are beginning to be evaluated in clinical trials. To distinguish candidate vaccine strains from wild-type strains isolated during these trials, we developed PCR assays specific to two sets of candidate vaccine strains. The two sets w...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.2.334-337.1996
更新日期:1996-02-01 00:00:00
abstract::A newly developed enzyme immunoassay (EIA) was used to detect the presence of pneumococcal teichoic and lipoteichoic acids in cerebrospinal fluid (CSF) from patients with Streptococcus pneumoniae meningitis who were being treated with antibiotics. All initial CSF samples, which on culture grew S. pneumoniae, were posi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.36.8.2346-2348.1998
更新日期:1998-08-01 00:00:00
abstract::Of 121 AIDS patients, 12 (10%) had Toxoplasma gondii DNA detected by competitive PCR in their bronchoalveolar lavage samples. Quantitation of the PCR results showed a correlation between the parasite burden and the serum lactic dehydrogenase titer. Quantitative competitive PCR could be useful to assess the diagnosis a...
journal_title:Journal of clinical microbiology
pub_type: 临床试验,杂志文章
doi:10.1128/JCM.33.6.1662-1664.1995
更新日期:1995-06-01 00:00:00
abstract::A multilaboratory study designed to determine the in vitro susceptibility criteria and quality control parameters for ofloxacin against Neisseria gonorrhoeae was conducted according to the guidelines of the National Committee for Clinical Laboratory Standards. Proposed susceptibility breakpoints are MICs of less than ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.30.4.1024-1026.1992
更新日期:1992-04-01 00:00:00
abstract::The COVID-19 pandemic has put the clinical laboratory in the spotlight. The news media is regularly seeking out interviews with microbiologists, infectious disease specialists, and pathologists. Increased public exposure offers opportunities to improve how laboratory professionals communicate our insights. We can emph...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02917-20
更新日期:2021-01-21 00:00:00
abstract::Rapid and accurate tests are currently needed to identify individuals with high levels of Loa loa microfilaria (mf), so that these individuals may be excluded from mass ivermectin administration campaigns against onchocerciasis and lymphatic filariasis being conducted in areas where Onchocerca volvulus, Wuchereria ban...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00525-14
更新日期:2014-06-01 00:00:00
abstract::Meningococcal disease is normally suspected on clinical grounds and is confirmed by isolation of Neisseria meningitidis bacteria from blood or cerebrospinal fluid or, more recently, by serology or PCR of cerebrospinal fluid. Achieving confirmation of a clinical diagnosis of meningococcal disease has become more diffic...
journal_title:Journal of clinical microbiology
pub_type: 临床试验,杂志文章
doi:10.1128/JCM.34.7.1637-1640.1996
更新日期:1996-07-01 00:00:00
abstract::We have shown that a modification of the color-coded antigen developed by Kasatiya and Lambert (Appl. Microbiol. 28:317-318, 1974) can be used as a substitute for other nontreponemal antigens used in screening tests for syphilis. The antigen is based on the Venereal Disease Research Laboratory antigen, with EDTA, chol...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.18.5.1141-1145.1983
更新日期:1983-11-01 00:00:00
abstract::During a 1-year survey of Shiga toxin-producing Escherichia coli (STEC) prevalence in central France, 2,143 samples were investigated by PCR for Shiga toxin-encoding genes. A total of 330 (70%) of 471 fecal samples collected from healthy cattle at the Clermont-Ferrand slaughterhouse, 47 (11%) of 411 beef samples, 60 (...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.3.1023-1031.2000
更新日期:2000-03-01 00:00:00
abstract::In a field trial conducted in cooperation with pediatricians in private practice, 198 nasopharyngeal swabs from children with suspected whooping cough were placed into charcoal-horse-blood transport medium with cephalexin (40 mg/liter). After preincubation at 36 degrees C for 1 to 2 days, the transport systems were ma...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.26.6.1248-1249.1988
更新日期:1988-06-01 00:00:00
abstract::Nineteen multidrug-resistant (MDR) Mycobacterium complex strains isolated in a nosocomial outbreak were characterized at the molecular level. The strains were microbiologically characterized as Mycobacterium bovis. The mpt40 sequence was not present in chromosomal DNA from these strains, supporting the fact that they ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.35.6.1390-1393.1997
更新日期:1997-06-01 00:00:00
abstract::We studied the use of dried spots of bodily fluids (plasma, whole blood, and mother's milk) on filter paper as a means of sample collection and storage for human immunodeficiency virus type 1 (HIV-1) viral load testing under stringent field conditions. Plasma placed directly in lysis buffer, which is customarily used ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01919-06
更新日期:2007-03-01 00:00:00
abstract::Ten strains of enterotoxigenic Escherichia coli producing heat-labile enterotoxin (LT) were preserved under 12 different conditions. After 1 month, 9 months, and 3 years of preservation, the cultures were recovered and examined for LT production. Preservation of the cultures on Dorset Egg Medium at 4 degrees C and pre...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.29.10.2326-2328.1991
更新日期:1991-10-01 00:00:00
abstract::The frequencies of 10 opportunistic DNA viruses were determined by multiplex real-time PCR in paired cerebrospinal fluid (CSF) and brain tissue of HIV-infected individuals. In the CSF, viruses were detectable in 45/55 cases: JC virus (JCV) in 62%, Epstein-Barr virus (EBV) in 44%, cytomegalovirus (CMV) in 25%, varicell...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.03321-12
更新日期:2013-03-01 00:00:00
abstract::A pair of synthetic oligonucleotide primers, designed from the gene encoding a 32-kDa intraerythrocytic piroplasm surface protein of Theileria sergenti, were used to amplify parasite DNA from the blood of T. sergenti-infected cattle by means of the polymerase chain reaction (PCR). PCR-amplified DNA was examined by ele...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.10.2565-2569.1993
更新日期:1993-10-01 00:00:00
abstract::Levels of amikacin in serum were determined in 106 serum specimens by a latex agglutination inhibition card test and by radioimmunoassay (RIA). Linear regression analysis demonstrated a high degree of correlation between the two assays (latex = 0.95 (RIA) + 0.69; r = 0.97). Assay of three control sera containing 7.5, ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.22.5.699-701.1985
更新日期:1985-11-01 00:00:00
abstract::We assessed the genetic and the antigenic variability within the env gene of peripheral blood human immunodeficiency virus (HIV) type 1 (HIV-1) group O populations during the natural course of a female heterosexual infection. Our data revealed the existence of a significant increase in amino acid sequence variability ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01818-06
更新日期:2007-04-01 00:00:00
abstract::The Echinococcus Western Blot IgG (LDBIO Diagnostics, Lyon, France), using a whole larval antigen from Echinococcus multilocularis, was evaluated for serodiagnosis and differentiation between two human parasitic infections of worldwide importance: cystic echinococcosis, due to Echinococcus granulosus, and alveolar ech...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.10.3718-3721.2000
更新日期:2000-10-01 00:00:00
abstract::Two serotypes of exfoliatin, A and B, previously reported by Kondo et al. (1974) were examined for their presence in 43 strains of Staphylococcus aureus, most of which were isolated from patients with Ritter's disease and impetigo. The tested strains consisted of 24 strains of phage group II and 19 strains not of phag...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.1.5.397-400.1975
更新日期:1975-05-01 00:00:00
abstract::The extent and importance of genotype heterogeneity of Pneumocystis carinii f. sp. hominis within lungs have not previously been investigated. Two hundred forty PCR clones obtained from respiratory specimens and lung segments from three patients with fatal P. carinii pneumonia were investigated to detect genetic diver...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.39.10.3789-3792.2001
更新日期:2001-10-01 00:00:00
abstract::This report describes the first isolation of the ameba Balamuthia mandrillaris from an environmental soil sample associated with a fatal case of amebic encephalitis in a northern California child. Isolation of the ameba into culture from autopsied brain tissue confirmed the presence of Balamuthia: In trying to locate ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.7.3175-3180.2003
更新日期:2003-07-01 00:00:00
abstract::Salmonella enterica subsp. enterica serovar Agona was not frequently encountered in Finland until an increase in rates of isolation among animal and feed was seen in 1994. A small outbreak among cattle farms in the regions of Oulu and Vaasa in northwestern Finland in 1994-1995 included eight farms. After the outbreak,...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.40.10.3648-3653.2002
更新日期:2002-10-01 00:00:00
abstract::The highly specific and sensitive latex agglutination test for cryptococcal antigen detection in cerebrospinal fluid is routine in many hospitals. Contamination of cerebrospinal fluid by a minute amount of syneresis fluid (surface condensation) from agar gave a strongly positive reaction which was heat stable, was not...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.22.5.856-857.1985
更新日期:1985-11-01 00:00:00