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 Plasmodium falciparum DNA and compared to that of a previously published qPCR targeting the 18S rRNA coding gene (18S qPCR). The limit of detection of the cytb qPCR assay was 20 DNA copies (i.e., 1 parasite equivalent) per 400 μl of extracted whole blood and was comparable for the two qPCR assays. Both qPCR assays were used on blood samples from 265 consecutive patients seen for suspicion of malaria. There were no microscopy-positive and qPCR-negative samples. Positive cytb qPCR results were observed for 51 samples, and all but 1 were also 18S qPCR positive. Eight (16%) of these 51 samples were negative by microscopic examination. The 8 cytb qPCR-positive and microscopy-negative samples were from African patients, 3 of whom had received antimalarial drugs. Three non-P. falciparum infections were correctly identified using an additional qPCR assay. The absence of PCR inhibitors was tested for by the use of an internal control of mouse DNA to allow reliable quantification of circulating DNA. The high analytical sensitivity of both qPCR assays combined with automated DNA extraction supports its use as a laboratory tool for diagnosis and parasitemia determination in emergencies. Whether to treat qPCR-positive and microscopy-negative patients remains to be determined.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Farrugia C,Cabaret O,Botterel F,Bories C,Foulet F,Costa JM,Bretagne Sdoi
10.1128/JCM.02156-10subject
Has Abstractpub_date
2011-06-01 00:00:00pages
2191-5issue
6eissn
0095-1137issn
1098-660Xpii
JCM.02156-10journal_volume
49pub_type
杂志文章abstract::Lipopolysaccharide components 3-deoxy-D-manno-2-octulosonic acid and L-glycero-D-manno-heptose were detected in hydrolysates from whole cells of Neisseria elongata by gas-liquid chromatography. Cells from a single plate were hydrolyzed, and carbohydrate components were converted to aldononitrile and O-methyloxime acet...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.23.3.425-430.1986
更新日期:1986-03-01 00:00:00
abstract::A rapid and simple method for extracting specific cell-free antigens of Coccidioides immitis and Histoplasma capsulatum from agar slant cultures was developed. The extracts were analyzed in immunodiffusion tests for the presence of C. immitis or H. capsulatum specific antigens. These extracts were compared with cultur...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2015-01-01 00:00:00
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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
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章,评审
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更新日期:1998-03-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01391-13
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.9.2316-2323.1995
更新日期:1995-09-01 00:00:00
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pub_type: 杂志文章
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更新日期:2011-06-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.27.10.2300-2304.1989
更新日期:1989-10-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02347-12
更新日期:2013-02-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.19.6.763-765.1984
更新日期:1984-06-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.29.6.1132-1136.1991
更新日期:1991-06-01 00:00:00
abstract::A 44-year-old diabetic female presented to a hospital in Jamaica with thermal burns. Trichosporon asahii was isolated from facial wounds, sputum, and a meningeal swab. Dissemination of the fungus was demonstrated in stained histological sections of the meninges and a brain abscess at autopsy. Pure growth of the fungus...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.05028-11
更新日期:2011-12-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.29.9.1804-1811.1991
更新日期:1991-09-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.36.8.2301-2307.1998
更新日期:1998-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/JCM.01505-09
更新日期:2010-02-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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更新日期:2002-11-01 00:00:00
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更新日期:2010-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2011-08-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.29.11.2385-2389.1991
更新日期:1991-11-01 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
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.36.5.1382-1387.1998
更新日期:1998-05-01 00:00:00
abstract::Hepatitis C virus (HCV) infection typically leads to antibody response within weeks after primary infection. Here, we describe the case of a child infected with HCV by mother-to-child transmission who remained persistently seronegative despite the presence of high levels of circulating HCV RNA. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00622-12
更新日期:2012-07-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.11.5721-5732.2005
更新日期:2005-11-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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更新日期:2008-05-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.9.4826-4829.2005
更新日期:2005-09-01 00:00:00
abstract::Fingerprinting by randomly amplified polymorphic DNA (RAPD) analysis was used to differentiate Scedosporium prolificans isolates. A total of 59 arbitrary primers were screened with six unrelated S. prolificans isolates, and a panel of 12 primers was selected. The 12 primers were then used to detect DNA polymorphisms a...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.35.9.2270-2274.1997
更新日期:1997-09-01 00:00:00
abstract::Campylobacter rectus was isolated under routine anaerobic conditions (no additional hydrogen gas in the atmosphere) from an oral, nonperiodontal abscess from a patient with gastroesophageal adenocarcinoma. We report the first case of a palate abscess caused by C. rectus and review the literature and atmospheric requir...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01590-08
更新日期:2009-03-01 00:00:00