Abstract:
:Accurate species identification of enterococci has become important with the wide prevalence of acquired vancomycin resistance and the presence of less epidemiologically important, inherently vancomycin-resistant enterococci. Using a collection of enterococcal strains, we found that PCR amplification of the intergenic spacer (ITS-PCR) between the 16S and 23S rRNA genes can produce amplicon profiles characteristic of the enterococcus examined. The species examined were group I enterococci (Enterococcus avium, Enterococcus raffinosus, Enterococcus malodoratus, and Enterococcus pseudoavium), group II enterococci (Enterococcus faecalis, Enterococcus faecium, Enterococcus casseliflavus, Enterococcus mundtii, and Enterococcus gallinarum), and group III enterococci (Enterococcus durans and Enterococcus hirae). The enterococcal species in group I, as well as E. faecalis and two strains of E. hirae, were similar and therefore had to be differentiated from each other by Sau3A restriction digests. This produced patterns characteristic of each of these species. The remaining group II and group III enterococcal species produced amplicons characteristic of a particular species except E. gallinarum. The PCR products from E. gallinarum displayed strain-to-strain heterogeneity in the number and size of amplicons. To further test the utility of this technique, 11 phenotypically aberrant strains which had been assigned species identification based on Facklam and Collins-type strain reactions (R.R. Facklam and M.D. Collins, J. Clin. Microbiol. 27:731-734, 1989) were subjected to ITS-PCR. ITS-PCR of the phenotypically aberrant strains identified six strains with reactions consistent with those of type strains. However, five strains were characterized as follows: two strains originally identified as E. mundtii were identified by ITS-PCR as E. casseliflavus, one strain originally identified as E. raffinosus was identified by ITS-PCR as E. durans, one strain originally identified as E. hirae was identified by ITS-PCR as E. faecium [corrected]. We conclude that amplification of the intergenic 23S and 16S rRNA gene regions of enterococci provides a reliable technique for species identification of enterococci.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Tyrrell GJ,Bethune RN,Willey B,Low DEdoi
10.1128/JCM.35.5.1054-1060.1997subject
Has Abstractpub_date
1997-05-01 00:00:00pages
1054-60issue
5eissn
0095-1137issn
1098-660Xjournal_volume
35pub_type
杂志文章abstract::By the use of enzyme immunoassay and RNA electrophoresis, rotavirus serotyping was performed with stool specimens from 605 children. Serotypes 1, 2, 3, and 4 accounted for 63, 9, 9, and 19% of the cases, respectively, with considerable yearly variation. An average of three serotypes cocirculated each year. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.30.6.1592-1594.1992
更新日期:1992-06-01 00:00:00
abstract::Evaluations of screening tests for bacteriuria have traditionally compared the test results with those of quantitative urine cultures. However, many patients with symptomatic urinary tract infections can have less than 10(5) CFU/ml in their urine. Therefore, the results of urine culture and three screening tests (Bac-...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.3.467-470.1987
更新日期:1987-03-01 00:00:00
abstract::A premarket trial of the Becton Dickinson Directigen respiratory syncytial virus membrane-based enzyme immunoassay compared the test with virus isolation for the detection of respiratory syncytial virus in 583 nasopharyngeal aspirates. After modification, the Directigen test showed a sensitivity of 83% and a specifici...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.6.1458-1459.1990
更新日期:1990-06-01 00:00:00
abstract::A monoclonal antibody (MAb), designated CHA 437, was developed against herpes simplex virus (HSV). This MAb (isotype, immunoglobulin G2b K) reacted with HSV type 1 and HSV type 2. It showed no cross-reactivity with varicella-zoster virus, cytomegalovirus, or Epstein-Barr virus. Direct detection of HSV antigen in clini...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.5.958-959.1987
更新日期:1987-05-01 00:00:00
abstract::In sera from 4 of 25,000 individuals tested for antibodies against streptococci, extremely high antideoxyribonuclease B titers ( > 10(6) U/ml) were found. Two of the cases were diagnosed as monoclonal gammopathies. The M-components were shown to possess the anti-deoxyribonuclease B activity. The other two cases were d...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.11.6.720-723.1980
更新日期:1980-06-01 00:00:00
abstract::We have developed a novel and practical DNA-RNA hybridization assay for the detection and identification of Campylobacter pylori in the gastric mucosa. This technique utilizes a [32P]ddATP-labeled synthetic oligonucleotide probe complementary to a nucleotide sequence present in C. pylori 16S rRNA. This probe is very s...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.27.12.2652-2655.1989
更新日期:1989-12-01 00:00:00
abstract::Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of hospital-acquired and life-threatening infections. Active surveillance programs for MRSA utilize either molecular or culture-based methods. A prospective study was performed to compare the performance of selective and differential chromogenic media...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02022-12
更新日期:2013-01-01 00:00:00
abstract::A double-antibody (sandwich) enzyme-linked immunosorbent assay (ELISA) was adapted to detect Rift Valley fever virus antigen. Antibodies were purified from hyperimmune mouse and rabbit sera by affinity chromatography, using CNBr-activated Sepharose 4B coupled to a beta-propiolactone-inactivated sucrose-acetone-extract...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.17.6.1026-1031.1983
更新日期:1983-06-01 00:00:00
abstract::Statistical analysis of a limiting dilution assay (LDA) showed that the occurrence of infectious human immunodeficiency virus type 1 (HIV-1)-harboring cells in serially diluted samples of peripheral blood mononuclear cells (PBMCs) of HIV-1-seropositive patients fits the model describing a single-hit Poisson distributi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.30.10.2535-2538.1992
更新日期:1992-10-01 00:00:00
abstract::We describe a novel, rapid, and inexpensive method for the measurement of growth of Mycobacterium tuberculosis, Mycobacterium bovis, and Mycobacterium smegmatis in the presence or absence of detergent. The method, which employs hot NaOH treatment of mycobacterial cells to release total cellular protein, compares favor...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.36.9.2752-2754.1998
更新日期:1998-09-01 00:00:00
abstract::This study evaluated a PCR method for the rapid detection of clinically significant genotypes of vancomycin-resistant enterococci (VRE) in nosocomial surveillance specimens. Detection of the vanA and vanB genes by multiplex PCR using 657 specimens that showed presumptive growth of VRE on bile esculin azide agar contai...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.37.6.2090-2092.1999
更新日期:1999-06-01 00:00:00
abstract::We sought evidence of toxoplasma parasitemia among 37 people with active or dormant Toxoplasma gondii infection or no evidence of infection. DNA was extracted from erythrocyte-free portions of blood samples, and the T. gondii B1 gene was amplified by the polymerase chain reaction. Evidence of T. gondii parasitemia was...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.9.2327-2331.1993
更新日期:1993-09-01 00:00:00
abstract::Although numerous perioperative samples and culture media are required to diagnose prosthetic joint infection (PJI), their exact number and types have not yet been definitely determined with a high level of proof. We conducted a prospective multicenter study to determine the minimal number of samples and culture media...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章,多中心研究
doi:10.1128/JCM.02497-15
更新日期:2016-02-01 00:00:00
abstract::Alere i RSV is a novel rapid test which applies a nicking enzyme amplification reaction to detect respiratory syncytial virus in point-of-care settings. In this study, we evaluated the Alere i RSV assay by using frozen nasopharyngeal swab samples that were collected in viral transport medium from children hospitalized...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02433-16
更新日期:2017-04-01 00:00:00
abstract::In a multicenter study, 113 blood samples from 19 organ transplant patients were analyzed for cytomegalovirus by the pp65 antigenemia assay and a quantitative DNA hybridization assay. Overall, there was 84% agreement among the results obtained by the two tests. Fifteen of 16 episodes of active infection were detected ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章,多中心研究
doi:10.1128/JCM.35.12.3303-3304.1997
更新日期:1997-12-01 00:00:00
abstract::Staphylococcus epidermidis, a human commensal, is a common cause of bacteremia in immunocompromised patients with indwelling medical devices. We report a case of isolated cervical adenitis caused by S. epidermidis in an immunocompetent patient and comment on the presumed pathogenesis. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.2.426-427.1993
更新日期:1993-02-01 00:00:00
abstract::Multidrug-resistant (MDR) Klebsiella pneumoniae is one of the most important causes of nosocomial infections worldwide. After the spread of strains resistant to beta-lactams at the end of the previous century, the diffusion of isolates resistant to carbapenems and colistin is now reducing treatment options and the con...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00545-15
更新日期:2015-09-01 00:00:00
abstract::The reliability of an rRNA-derived oligonucleotide probe for Neisseria gonorrhoeae was tested with 187 N. gonorrhoeae isolates, 81 Neisseria meningitidis isolates, and several strains of other bacterial species. The probe proved to be 100% specific and 100% sensitive. N. gonorrhoeae cells could also be reliably identi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.5.944-948.1990
更新日期:1990-05-01 00:00:00
abstract::Production of staphylococcal alpha- or alpha-beta-toxins correlated well with production of coagulase or thermonuclease (or both) in 203 Staphylococcus aureus isolates from milk and should be reliable indicators of S. aureus in the absence of Staphylococcus intermedius. Failures to produce toxin, tube coagulase, or th...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.21.4.582-584.1985
更新日期:1985-04-01 00:00:00
abstract::Despite the high virological response rates achieved with current directly acting antiviral agents (DAAs) against hepatitis C virus (HCV), around 2% to 5% of treated patients do not achieve a sustained viral response. The identification of amino acid substitutions associated with treatment failure requires analytical ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01985-20
更新日期:2020-11-18 00:00:00
abstract::Rapid identification of pathogens from blood cultures can decrease lengths of stay and improve patient outcomes. We evaluated the accuracy of the Verigene Gram-positive blood culture (BC-GP) nucleic acid test for investigational use only (Nanosphere, Inc., Northbrook, IL) for the identification of Gram-positive bacter...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00831-13
更新日期:2013-07-01 00:00:00
abstract::In the last decade, the global emergence of carbapenem resistance in Enterobacteriaceae has posed great concern to public health. Data concerning the role of environmental contamination in the dissemination of carbapenem-resistant Enterobacteriaceae (CRE) are currently lacking. Here, we aimed to examine the extent of ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01992-12
更新日期:2013-01-01 00:00:00
abstract::Sera from Brucella-infected bovines were analyzed by immunoblotting by using sonicated cell extracts of B. melitensis or B. abortus and a competitive enzyme-linked immunosorbent assay (ELISA) with monoclonal antibodies against outer membrane proteins (OMPs) with molecular masses of 10, 16.5, 19, 25 to 27, 36 to 38, an...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.30.12.3168-3174.1992
更新日期:1992-12-01 00:00:00
abstract::A real-time PCR assay was developed targeting the bla(KPC) responsible for Klebsiella pneumoniae carbapenemase (KPC)-mediated carbapenem resistance and was validated for testing colonies or enrichment broth cultures. The assay accurately detects KPC-containing strains with high analytical specificity and sensitivity. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00268-11
更新日期:2011-09-01 00:00:00
abstract::We implemented hospital information system (HIS) alerts to deter unnecessary test orders for ovum and parasite (O&P) exams and Clostridium difficile PCR. The HIS alerts decreased noncompliant O&P orders (orders after >72 h of hospitalization) from 49.8% to 30.9%, an overall decrease of 19%, and reduced noncompliant C....
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00968-15
更新日期:2015-08-01 00:00:00
abstract::The sensitivity and specificity of the human immunodeficiency virus (HIV) type 1-specific immunoglobulin G capture enzyme-linked immunosorbent assay (BED-CEIA) were compared with those of the avidity index method to identify recent HIV infection using a panel of 148 samples (81 patients) representing durations of infe...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01055-07
更新日期:2008-01-01 00:00:00
abstract::We compared examination of unstained and Gram-stained smears as methods of evaluating sputum quality. Of 100 slides examined, 96 (96%) were graded identically. Each discrepancy between methods was near the cutoff for specimen acceptability. We concluded that examination of unstained smears can provide an accurate, cos...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.24.1.143-144.1986
更新日期:1986-07-01 00:00:00
abstract::We surveyed 75 clinical laboratories to determine if National Committee for Clinical Laboratory Standards (NCCLS) were being used for the susceptibility testing of Haemophilus influenzae. Of the 66 laboratories that performed susceptibility testing, all claimed to follow current NCCLS guidelines. However, upon further...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.32.8.2013-2015.1994
更新日期:1994-08-01 00:00:00
abstract::Gemella morbillorum and Gemella haemolysans are opportunistic pathogens which cause endocarditis and other severe infections. We report on three patients with endocarditis, one with endocarditis caused by G. haemolysans and two with endocarditis caused by G. morbillorum. The paucity of reports concerning these bacteri...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章,评审
doi:10.1128/JCM.36.4.866-871.1998
更新日期:1998-04-01 00:00:00
abstract::This is the first report in Israel of a cluster of cases of diarrhea associated with the isolation of Escherichia coli O157 in stool samples. E. coli O157:NM (nonmotile), producing verotoxins 1 and 2 was isolated from the stool samples of three infants less than 1 year of age with diarrhea and from a fourth asymptomat...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.30.2.520-521.1992
更新日期:1992-02-01 00:00:00