Abstract:
:A serum immunoglobulin G enzyme immunoassay (EIA) for Helicobacter pylori antibodies already in use in adults was evaluated with 99 pediatric serum samples to determine its usefulness for the study of H. pylori disease in children. The reference method used was either the (13)C-urea breath test or a biopsy culture of gastric mucosa. In children, an EIA cutoff of 0.35 absorbancy unit yielded sensitivity, specificity, and positive and negative predictive values of 93, 97, 93, and 97%, respectively. The cutoff recommended when this EIA was published for use in adults was 0.70 absorbancy unit (H. Gnarpe, P. Unge, C. Blomqvist, and S. Mäkitalo, APMIS 96:128-132, 1988). Another subset of 169 serum samples taken from children was analyzed by four serological tests in order to compare the performance of the in-house EIA with the Pyloriset, HM-CAP, and Helico-G kits. For the 169 samples, 10 (5.9%) false-positives and no false-negatives occurred with the Helico-G, 3 (1.8%) false-positives and no false-negatives occurred with the Pyloriset, and 3 (1.8%) false-positives and 1 (0.6%) false-negative occurred with the HM-CAP. For the 169 samples, 1 (0.6%) false-positive and no false-negatives occurred with the in-house EIA. Serological detection of H. pylori antibodies with our EIA seems to be valuable in diagnosing H. pylori infection in children, but only if a lowered, specific pediatric cutoff is established. The commercial kits, particularly the Helico-G, seem to overdiagnose pediatric H. pylori infection. A positive serological test for H. pylori infection, particularly for children, needs to be confirmed by a reference method because of the possibility of spontaneous eradication of infection, with a lingering serological response.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Sunnerstam B,Kjerstadius T,Jansson L,Giesecke J,Bergström M,Ejderhamn Jdoi
10.1128/JCM.37.10.3328-3331.1999subject
Has Abstractpub_date
1999-10-01 00:00:00pages
3328-31issue
10eissn
0095-1137issn
1098-660Xjournal_volume
37pub_type
杂志文章abstract::Alpha-toxin is a major Staphylococcus aureus virulence factor. This study evaluated potential relationships between in vitro alpha-toxin expression of S. aureus bloodstream isolates, anti-alpha-toxin antibody in serum of patients with S. aureus bacteremia (SAB), and clinical outcomes in 100 hemodialysis and 100 postsu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02023-14
更新日期:2015-01-01 00:00:00
abstract::Clinical arbovirus screening requires exclusion of a broad range of viruses with as few assays as possible. We present a reverse transcription-PCR (RT-PCR) for the detection of all species of the genus Alphavirus qualified for exclusion screening (limit of detection [LOD], 5 to 100 RNA copies per reaction across all A...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00317-10
更新日期:2010-09-01 00:00:00
abstract::A new method for determining the MICs for Aspergillus species with slant-shaking incubation is described. The method was rapid (24 h), produced sharp visual end points, and showed high reproducibility. Additionally, MICs measured by this method correlated well with, as well as were two- to sixfold lower than, those by...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.4.1009-1012.1993
更新日期:1993-04-01 00:00:00
abstract::Cellulosimicrobium funkei is a rare, opportunistic pathogen. We describe a case of bacteremia and possibly prosthetic valve endocarditis by this organism in a nonimmunocompromised patient. Useful phenotypic tests for differentiating C. funkei from Cellulosimicrobium cellulans and Cellulosimicrobium terreum include mot...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01103-10
更新日期:2011-03-01 00:00:00
abstract::As microbial genomics makes increasingly important contributions to clinical and public health microbiology, the interpretation of whole-genome sequence data by nonspecialists becomes essential. In the absence of capsule-based vaccines, two protein-based vaccines have been used for the prevention of invasive serogroup...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02161-20
更新日期:2020-12-17 00:00:00
abstract::Alternative antischistosomal drugs are required since praziquantel is virtually the only drug available for treatment and morbidity control of schistosomiasis. Manual microscopic reading is the current "gold standard" to assess the in vitro antischistosomal properties of test drugs; however, it is labor-intensive, sub...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02382-10
更新日期:2011-04-01 00:00:00
abstract::Established in-house quantitative PCR (qPCR) assays to detect the Mycoplasma genitalium adhesion protein (MgPa) and the 16S rRNA gene were found to be comparable for screening purposes, with a kappa value of 0.97 (95% confidence interval [CI], 0.94 to 1.01) and no difference in bacterial load quantified (P = 0.4399). ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02328-10
更新日期:2011-03-01 00:00:00
abstract::The GenoType MTBDRsl test rapidly detects resistance to ethambutol, fluoroquinolones, and second-line aminoglycosides (amikacin and kanamycin) and cyclic peptide (capreomycin) in Mycobacterium tuberculosis. A set of 41 multidrug-resistant (MDR) M. tuberculosis strains, 8 extensively drug-resistant (XDR) M. tuberculosi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01947-09
更新日期:2010-05-01 00:00:00
abstract::In total, 521 nonrespiratory specimens (91 urine, 30 gastric aspirate, 245 tissue, 113 pleural fluid, 19 cerebrospinal fluid [CSF], and 23 stool specimens) submitted to the German National Reference Laboratory for Mycobacteria (NRL) from May 2009 to August 2010 were comparatively investigated with the new molecular-ba...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02268-10
更新日期:2011-04-01 00:00:00
abstract::The population structure of 3,776 Mycobacterium tuberculosis isolates was determined using variable-number tandem-repeat (VNTR) typing. The degree of clonality was so high that a more relaxed definition of clustering cannot be applied. Among recent immigrants with non-Euro-American isolates, transmission is overestima...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00489-13
更新日期:2013-07-01 00:00:00
abstract::Monoclonal antibodies to K88ac and K88ab were used in enzyme-linked immunosorbent assays on Escherichia coli cultures known to produce K88 pili. A total of 415 K88-positive E. coli isolates from nine states were all found to be the K88ac variant. The cultures tested were isolated during the years 1976 to 1985. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.26.1.149-150.1988
更新日期:1988-01-01 00:00:00
abstract::In our nursery, we identified neonates with positive urine latex particle agglutination (LPA) tests for group B streptococcus (GBS) antigen who did not have corroborating cultural evidence of infection. To investigate the mechanisms underlying these apparent false-positive reactions, we examined the urine LPA test in ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.27.10.2214-2217.1989
更新日期:1989-10-01 00:00:00
abstract::Serological tests to detect Trypanosoma cruzi antibodies have been used for screening blood donors, for epidemic studies, and for diagnosis of probably infected persons. Among different tests, the enzyme-linked immunosorbent assay (ELISA) with total, semipurified, or synthetic antigens has been widely used, mainly due...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.39.12.4390-4395.2001
更新日期:2001-12-01 00:00:00
abstract::A modified Elek test and an immuno-halo test were developed for detection of the thermostable direct hemolysin produced by Kanagawa phenomenon-positive strains of Vibrio parahaemolyticus. The sensitivity of the modified Elek test was almost the same as that of the Kanagawa phenomenon on Wagatsuma medium, and the resul...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.11.6.600-603.1980
更新日期:1980-06-01 00:00:00
abstract::Using the Staphylococcus aureus absorption method, we have modified a commercial radioimmunoassay kit for the determination of total antibody to hepatitis B core antigen so that we can now determine the predominant globulin species of that antibody. One-hundred percent of acute hepatitis B sera had a predominance of i...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.16.5.973-975.1982
更新日期:1982-11-01 00:00:00
abstract::A qualitative multiplex reverse transcription (RT)-PCR and liquid hybridization assay for the detection of human enteroviruses, rhinoviruses, parechoviruses, and Aichi virus was developed. Furthermore, a separate assay for the recognition of hepatitis A virus was established to complement the test pattern so that all ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.3.1239-1245.2005
更新日期:2005-03-01 00:00:00
abstract::While testing the in vitro activities of 14 antimicrobial agents against 107 methicillin-susceptible Staphylococcus aureus (MSSA) and 250 methicillin-resistant S. aureus (MRSA) isolates collected in The Netherlands, we found to our surprise that 19 (7.6%) MRSA isolates were suspected of having reduced susceptibilities...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.6.2487-2491.2003
更新日期:2003-06-01 00:00:00
abstract::Syrian hamsters were shown to be susceptible to infection by the Lyme disease spirochete Borrelia burgdorferi. Although these spirochetes did not cause any outward signs of illness in these animals, they did cause a generalized infection. Spirochetemia was present during the first 6 days of infection. At 14 days posti...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.20.6.1099-1101.1984
更新日期:1984-12-01 00:00:00
abstract::The detection of amplified products resulting from polymerase chain reactions (PCRs) remains a complicated process. To simplify the detection procedures, we developed a colorimetric microtiter plate hybridization assay for the specific detection of 5'-biotinylated PCR fragments of Mycobacterium leprae DNA. For this as...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.3.665-670.1993
更新日期:1993-03-01 00:00:00
abstract::Interfering substances have been reported to inhibit PCR assays for the direct detection of Mycobacterium tuberculosis in clinical specimens. Using an internal control, we determined that 52% of respiratory specimens interfered with our PCR assay. On the basis of these findings, we tried to circumvent the problem by s...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.9.2125-2128.1996
更新日期:1996-09-01 00:00:00
abstract::Serum hepatitis B virus (HBV) DNA was extracted from a chronically infected patient with cocirculation of hepatitis B surface antigen (HBsAg) and anti-HBs antibodies. Direct PCR and clone-derived sequences of the S and overlapped P genes were obtained. DNA sequences and phylogenetic analysis ascribed this isolate to g...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00057-06
更新日期:2006-06-01 00:00:00
abstract::We compared the BD Phoenix automated microbiology system to the Bruker Biotyper (version 2.0) matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry (MS) system for identification of gram-negative bacilli, using biochemical testing and/or genetic sequencing to resolve discordant resul...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01890-10
更新日期:2011-03-01 00:00:00
abstract::A new agglutination test (Monostaph +; Bionor, Skien, Norway) has been developed. This new agglutination test has been compared with two other agglutination tests for the identification of 128 isolates of Staphylococcus aureus and 82 coagulase-negative staphylococci. The sensitivities of both Monostaph + and Pastorex ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.5.1333-1334.1995
更新日期:1995-05-01 00:00:00
abstract::A novel PCR detection assay that amplifies the Helicobacter pylori-specific vacuolating cytotoxin gene (vacA) and thus enables rapid diagnosis of infection is described. Additionally, a real-time probe hybridization melting point analysis assay to detect all three mutations in the 23S rRNA gene associated with clarith...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.39.4.1217-1220.2001
更新日期:2001-04-01 00:00:00
abstract::Eight commercial enzyme-linked immunosorbent assays (ELISAs) were used to test sera taken from 102 patients in whom Helicobacter pylori infection status had been determined by means of biopsy culture, PCR, histology, and urease production and by 13C urea breath test. By those means, 61 patients had been found to be in...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.35.1.292-294.1997
更新日期:1997-01-01 00:00:00
abstract::The efficacy of antiviral treatment for chronic hepatitis C virus (HCV) infection is determined by measuring HCV RNA at specific time points throughout therapy using highly sensitive and accurate HCV RNA assays. This study compared the performances of two recently developed real-time PCR HCV RNA assays, cobas HCV for ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章,多中心研究
doi:10.1128/JCM.02193-16
更新日期:2017-04-01 00:00:00
abstract::Amphotericin B therapy continues to be the "gold standard" in the treatment of invasive aspergillosis in the immunocompromised host. Although Aspergillus fumigatus and Aspergillus flavus constitute the major species, several reports have described invasive pulmonary or disseminated disease due to the less common Asper...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.37.7.2343-2345.1999
更新日期:1999-07-01 00:00:00
abstract::An enzyme immunoassay (EIA) for serum immunoglobulin M (IgM) antibodies to rubella virus based on enzyme labeling of viral antigen was developed. The sensitivity of the EIA for the detection of recent rubella virus infection was evaluated by using 115 rubella-IgM-antibody-positive serum specimens, which were confirmed...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.4.719-723.1990
更新日期:1990-04-01 00:00:00
abstract::During a 1-year period, the prevalence of thymidine-dependent (TD) Staphylococcus aureus in patients at two geographically distinct cystic fibrosis (CF) centers was determined. Of 200 CF patients who had their respiratory secretions cultured, 95 harbored S. aureus, and 20 (21%) had TD S. aureus as their predominant st...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.7.1258-1261.1987
更新日期:1987-07-01 00:00:00
abstract::Bovine babesiosis is a serious threat to the cattle industry. We prepared blood DNA samples from 13 cattle with clinical babesiosis from the Badulla (n = 8), Jaffna (n = 3), and Kilinochchi (n = 2) districts in Sri Lanka. These DNA samples tested positive in PCR assays specific for Babesiabovis (n = 9), Babesia bigemi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00895-18
更新日期:2018-10-25 00:00:00