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 to its easy automation. Aiming to improve serological studies concerning Chagas' disease, we have developed and evaluated a new test, the TcF-ELISA, using an artificially engineered recombinant antigen, which contains tandem sequences of different T. cruzi-specific peptides. The sensibility of the TcF-ELISA was determined with 101 serum samples from chagasic patients well-defined by clinical and epidemiological criteria. The specificity was determined with 39 serum samples from leishmaniasis or kala-azar patients and 150 serum samples from nonchagasic blood donors from Sao Paulo, Brazil. The TcF-ELISA showed 100% sensitivity and 98.94% of specificity. Compared with conventional ELISA (with semipurified T. cruzi epimastigote antigens), the TcF-ELISA showed advantages; for example, it distinguishes better between reagent and nonreagent serum and provides better precision and a lower occurrence of leishmaniasis cross-reactions. Our studies demonstrate high reproducibility between two different lots of the TcF ELISA and its applicability for the serological diagnosis of Chagas' disease.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Ferreira AW,Belem ZR,Lemos EA,Reed SG,Campos-Neto Adoi
10.1128/JCM.39.12.4390-4395.2001subject
Has Abstractpub_date
2001-12-01 00:00:00pages
4390-5issue
12eissn
0095-1137issn
1098-660Xjournal_volume
39pub_type
杂志文章abstract::To investigate whether both tissue culture and PCR on a sequence from the repetitive rDNA could contribute to the diagnosis of toxoplasmosis, blood samples and, if they were available, cerebrospinal fluid (CSF) and aqueous humor samples from 72 human immunodeficiency virus-seropositive patients with suspected toxoplas...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.9.2421-2426.1995
更新日期:1995-09-01 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::The carbohydrate fermentation test in cystine trypticase agar (BBL)-tubed medium was compared with a simple method using commercially available carbohydrate impregnated disks on culture inoculated Thayer-Martin medium with and without (vancomycin, colistimethate, and nystatin) inhibitors. There was 100% agreement betw...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:
更新日期:1976-02-01 00:00:00
abstract::This is the first reported case of endocarditis due to the Lactobacillus-like vancomycin-resistant gram-positive bacillus Weissella confusa. Full identification and susceptibility testing of Lactobacillus-like organisms recovered in blood culture should be performed for patients with clinical presentations that sugges...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.5.2237-2239.2003
更新日期:2003-05-01 00:00:00
abstract::A combination of immunomagnetic separation (IMS) and a polymerase chain reaction (PCR) procedure was used for direct isolation and identification of Shigella dysenteriae type 1 and Shigella flexneri from feces. Immunomagnetic particles were coated with monoclonal antibody MASFB, which is specific for a common epitope ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.30.11.2801-2806.1992
更新日期:1992-11-01 00:00:00
abstract::Comparative sequence analysis was performed upon Bacillus anthracis and its closest relatives, B. cereus and B. thuringiensis. Portions of rpoB DNA from 10 strains of B. anthracis, 16 of B. cereus, 10 of B. thuringiensis, 1 of B. mycoides, and 1 of B. megaterium were amplified and sequenced. The determined rpoB sequen...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.7.2908-2914.2003
更新日期:2003-07-01 00:00:00
abstract::Malignant catarrhal fever (MCF) was diagnosed by clinical signs and lesions in five out of six white-tailed deer (Odocoileus virginianus) in a North American zoo. The clinical signs and histopathological lesions in these deer were typical of MCF. Antibody to an epitope conserved among the MCF viruses was detected in t...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.4.1313-1318.2000
更新日期:2000-04-01 00:00:00
abstract::The in vitro susceptibilities of 66 molecularly identified strains of the Mucorales to eight antifungals (amphotericin B, terbinafine, itraconazole, posaconazole, voriconazole, caspofungin, micafungin, and 5-fluorocytosine) were tested. Molecular phylogeny was reconstructed based on the nuclear ribosomal large subunit...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.06133-11
更新日期:2012-01-01 00:00:00
abstract::Polyomavirus BK (BKV) establishes latent infection in various human tissues, including the kidney. Reactivation following renal transplantation (RT) may cause BKV-associated nephropathy, leading to graft loss. BKV reactivation is often associated with extensive rearrangements in the BKV noncoding regulatory region (NC...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02065-08
更新日期:2009-05-01 00:00:00
abstract::A cytochrome b (cytb) gene quantitative PCR (qPCR) assay was developed to diagnose malaria in travelers. First, manual and automated DNA extractions were compared and automated DNA extraction of 400 μl of blood was found to be more efficient. Sensitivity was estimated using the WHO international standard for Plasmodiu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02156-10
更新日期:2011-06-01 00:00:00
abstract::A total of 189 Candida albicans isolates have been typed by multilocus enzyme electrophoresis. The results obtained confirm the clonal mode of reproduction of C. albicans. The C. albicans populations found in the oropharynx of human immunodeficiency virus (HIV)-infected patients, in the oropharynx of healthy carriers,...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.5.1235-1248.1996
更新日期:1996-05-01 00:00:00
abstract::We compared anaerobic lytic (AL) and pediatric aerobic resin-containing (Peds Plus/F) blood culture media for the isolation of Salmonella enterica serotype Typhi or Paratyphi A from children. The yields from AL and Peds Plus/F media were the same with equal volumes of blood, but recovery was faster from AL medium than...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01452-08
更新日期:2009-01-01 00:00:00
abstract::Infectious gastroenteritis is one of the most common diseases in young children. To clarify the infectious etiology of diarrhea in Danish children less than 5 years of age, we conducted a 2-year prospective case-control study. Stools from 424 children with diarrhea and 870 asymptomatic age-matched controls were examin...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.8.3636-3641.2005
更新日期:2005-08-01 00:00:00
abstract::During a 6-month study we critically evaluated the accuracy of the AutoMicrobic system Gram-Negative Identification Card (Vitek Systems, Inc., Hazelwood, Mo.) in identifying glucose-nonfermenting gram-negative bacilli by testing 419 selected isolates in parallel with a conventional reference method. Of 356 isolates in...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.23.2.251-257.1986
更新日期:1986-02-01 00:00:00
abstract::Astrovirus infections were detected by enzyme immunoassay in 12 (5%) of 251 stool samples from children with gastroenteritis from Bogota, Colombia. In addition, astroviruses were detected by reverse transcription-PCR in 3 (10%) of 29 stool samples negative for other enteric pathogens collected in Caracas, Venezuela, f...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.9.3481-3483.2000
更新日期:2000-09-01 00:00:00
abstract::A 42-year-old woman developed severe, recurrent breast abscesses caused by Corynebacterium minutissimum. Prior reports of C. minutissimum infection have been limited to erythrasma, a minor dermatosis. The microbiological and clinical features of this species were reviewed. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.20.6.1219-1220.1984
更新日期:1984-12-01 00:00:00
abstract::Nucleic acid amplification tests (NAATs) are recommended for the diagnosis of N. gonorrhoeae infections because of their superior sensitivity. Increasing NAAT use causes a decline in crucial antimicrobial resistance (AMR) surveillance data, which rely on culture. We analyzed the suitability of the ESwab system for NAA...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00369-15
更新日期:2015-06-01 00:00:00
abstract::Participants in the College of American Pathologists' Mycobacteriology E proficiency testing survey in 1993 were asked to complete a questionnaire addressing mycobacterial test methods, test volume, and frequency of detection of drug-resistant Mycobacterium tuberculosis (MTB). A similar questionnaire had been distribu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.2.407-412.1995
更新日期:1995-02-01 00:00:00
abstract::During pregnancy, Plasmodium falciparum infection of the placenta frequently occurs in the absence of parasites in peripheral blood. We investigated the abilities of the OptiMAL rapid immunochromatographic strip test for P. falciparum lactate dehydrogenase and species-specific PCR performed on peripheral blood to dete...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.40.1.155-158.2002
更新日期:2002-01-01 00:00:00
abstract::Colonization of the gastrointestinal and genitourinary tracts of pregnant women with group B Streptococcus (GBS) can result in vertical transmission to neonates during labor/delivery. GBS infections in neonates can cause severe complications, such as sepsis, meningitis, and pneumonia. Accurate detection is critical be...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01958-18
更新日期:2019-05-24 00:00:00
abstract::A previously described microbroth kinetic system (J. Meletiadis, J. F. Meis, J. W. Mouton, and P. E. Verweij, J. Clin. Microbiol. 39:478-484, 2001) based on continuous monitoring of changes in the optical density of fungal growth was used to describe turbidimetric growth curves of different filamentous fungi in the pr...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.10.4718-4725.2003
更新日期:2003-10-01 00:00:00
abstract::Bacteroides forsythus has been associated with destructive adult periodontitis. Up to now, detailed analysis by classical means was hampered by the fastidious nature of the organism. There is hope that the application of molecular detection methods such as indirect immunofluorescence or in situ hybridization (ISH) wil...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.4.941-946.1993
更新日期:1993-04-01 00:00:00
abstract::Serratia plymuthica was isolated from the blood and from a central venous catheter tip in a 54-year-old man with alcoholic cirrhosis and clinical signs of sepsis. This was the seventh reported isolate of S. plymuthica from a clinical specimen and the first in which the organism was clearly a significant pathogen. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.8.1562-1563.1987
更新日期:1987-08-01 00:00:00
abstract::The purpose of this study was to evaluate the performance of a herpes simplex virus (HSV) type 1-specific anti-glycoprotein C-1 monoclonal antibody (MAb) and a type 2-specific anti-glycoprotein G-2 MAb for typing of 2,400 clinical HSV-1 isolates and 2,400 clinical HSV-2 isolates, respectively, using an enzyme immunoas...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.37.8.2717-2718.1999
更新日期:1999-08-01 00:00:00
abstract::The AMPLICOR PCR was used to detect Neisseria gonorrhoeae in endocervical specimens. A 16S rRNA PCR performed on N. gonorrhoeae-positive samples showed sensitivities of 73.2, 64.3, and 94.4% for samples treated directly with AMPLICOR lysis buffer, samples suspended in 2-sucrose phosphate, and samples suspended in dilu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.39.6.2280-2282.2001
更新日期:2001-06-01 00:00:00
abstract::The emergence of ciprofloxacin-resistant Salmonella enterica serovar Choleraesuis in recent years has become an important public health issue in Taiwan. The resistant strains that cause human infections are considered to be from pigs. In this study, we characterized 157 swine and 42 human Salmonella serovar Choleraesu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.6.2798-2804.2005
更新日期:2005-06-01 00:00:00
abstract::Tremendous interest has been generated in the commercial kits now available that incorporate herpes simplex virus isolation in cell culture with immunoperoxidase staining for viral antigen detection. Most studies comparing commercial kits with conventional cell culture techniques have found the kits to be less sensiti...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.8.1401-1405.1987
更新日期:1987-08-01 00:00:00
abstract::Combination therapy can successfully suppress human immunodeficiency virus (HIV) replication in patients but selects for drug resistance, requiring subsequent resistance-guided therapeutic changes. This report describes the development and validation of a novel assay that offers a uniform method to measure susceptibil...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01739-08
更新日期:2009-07-01 00:00:00
abstract::Human group C rotavirus was identified in central Australia in each of eight years over a 16-year period between 1982 and 1997. Cases occurred either sporadically but over a relatively short period of time or as clustered outbreaks. These are the only reports of human group C rotavirus in Australia other than that of ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.42.5.2127-2133.2004
更新日期:2004-05-01 00:00:00
abstract::The use of 1% unmodified rice starch and 1% horse serum instead of 2% soluble starch and 5% serum in Granada medium is described. These components result in a medium of increased stability, preventing spoilage after a few days of storage at room temperature. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.4.1989-1991.2005
更新日期:2005-04-01 00:00:00