Abstract:
:One of the capabilities developed by bacteria is the ability to gain large fragments of DNA from other bacteria or to lose portions of their own genomes. Among these exchangeable fragments are the genomic islands (GIs). Nine GIs have been identified in Brucella, and genomic island 3 (GI-3) is shared by two pathogenic species, B. melitensis and B. abortus. GI-3 encodes mostly unknown proteins. One of the aims of this study was to perform pulsed-field gel electrophoresis (PFGE) on field isolates of B. abortus from Chile to determine whether these isolates are clonally related. Furthermore, we focused on the characterization of GI-3, studying its organization and the genetic conservation of the GI-3 sequence using techniques such as tiling-path PCR (TP-PCR) and restriction fragment length polymorphism-PCR (RFLP-PCR). Our results, after PFGE was performed on 69 field isolates of B. abortus from Chile, showed that the strains were genetically homogeneous. To increase the power of genetic discrimination among these strains, we used multiple locus variable-number tandem-repeat (VNTR) analysis with 16 loci (MLVA-16). The results obtained by MLVA-16 showed that the strains of B. abortus were genetically heterogeneous and that most of them clustered according to their geographic origin. Of the genetic loci studied, panel 2B was the one describing the highest diversity in the analysis, as well as locus Bruce19 in panel 2A. In relation to the study of GI-3, our experimental analysis by TP-PCR identified and confirmed that GI-3 is present in all wild strains of B. abortus, demonstrating the high stability of gene cluster GI-3 in Chilean field strains.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Céspedes S,Salgado P,Valenzuela P,Vidal R,Oñate AAdoi
10.1128/JCM.01176-10subject
Has Abstractpub_date
2011-07-01 00:00:00pages
2461-9issue
7eissn
0095-1137issn
1098-660Xpii
JCM.01176-10journal_volume
49pub_type
杂志文章abstract::The increased incidence of nosocomial Legionnaires' disease in two hospitals prompted investigation of possible environmental sources. In the search for an effective DNA-typing technique for use in hospital epidemiology, the performance and convenience of three methods-SfiI macrorestriction analysis (MRA), amplified f...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::Several G8P[6] and G8P[8] rotavirus strains were isolated from hospitalized patients in the Democratic Republic of Congo in 2003. To investigate their overall genomic relatedness and to determine to which genogroup they belonged, the complete genomes of strains DRC88 (G8P[8]) and DRC86 (G8P[6]) were determined. Genomi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.44.5.1801-1809.2006
更新日期:2006-05-01 00:00:00
abstract::Despite recent advances, tuberculosis (TB) diagnosis remains imperfect in resource-limited settings due to its complexity and costs, poor sensitivity of available tests, or long times to reporting. We present a report on the use of colorimetric methods, based on the detection of mycobacterial growth using colorimetric...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00749-13
更新日期:2013-07-01 00:00:00
abstract::A novel reverse primer (GLM MR1) was designed for detection of the glmM gene in Helicobacter pylori by PCR. The percentage of amplification in clinical isolates using GLM MR1 was 100% for detection of the glmM gene and 86.36% for the ureA gene. The primer designed is useful for the identification of H. pylori. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00461-10
更新日期:2011-04-01 00:00:00
abstract::Salmonella enterica serovar Heidelberg is the second most frequently occurring serovar in Quebec and the third-most prevalent in Canada. Given that conventional pulsed-field gel electrophoresis (PFGE) subtyping for common Salmonella serovars, such as S. Heidelberg, yields identical subtypes for the majority of isolate...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02200-15
更新日期:2016-02-01 00:00:00
abstract::The IDI-MRSA assay (Infectio Diagnostic, Inc., Sainte-Foy, Quebec, Canada) with the Smart Cycler II rapid DNA amplification system (Cepheid, Sunnyvale, CA) appears to be sensitive and specific for the rapid detection of nasal colonization by methicillin-resistant Staphylococcus aureus (MRSA). We assessed the sensitivi...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02211-05
更新日期:2006-08-01 00:00:00
abstract::Shortly after adopting a 6-week-old cat, a veterinarian was bitten on the left index finger. Within 3 weeks, he developed headache, fever, and left axillary lymphadenopathy. Initial blood cultures from the cat and veterinarian were sterile. Repeat cultures from the cat grew Bartonella-like organisms with lophotrichous...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.35.7.1813-1818.1997
更新日期:1997-07-01 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::Analysis of 177 methicillin-resistant Staphylococcus aureus (MRSA) strains for the presence of egc and tst revealed that 60 strains carried at least one of the tested genes. MRSA strains were classified by pulsed-field gel electrophoresis into four clones belonging to agr groups I and III. Toxin genotypes were related...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.44.5.1881-1883.2006
更新日期:2006-05-01 00:00:00
abstract::An automated cultivation system for mycobacteria, the MGIT 960 system (MGIT system), was compared in the clinical routine with two variants of Löwenstein-Jensen (L-J) medium. A total of 152 isolates were recovered from 2,015 specimens: 139 (91%) with the MGIT system and 127 (84%) with L-J media (P = 0.05). These inclu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.3.960-964.2000
更新日期:2000-03-01 00:00:00
abstract::An immunoglobulin M (IgM) capture enzyme immunoassay was used to detect major overlapping outbreaks of disease in South Australia caused by coxsackieviruses B5 (CBV-5) and B6 (CBV-6). CBV-5-specific IgM was detected in patients presenting in spring 1992 with acute febrile illnesses, rash, severe acute respiratory dise...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.6.1628-1631.1995
更新日期:1995-06-01 00:00:00
abstract::Microarrays of virus-specific oligonucleotides may provide a method of screening samples for the presence or absence of a large variety of viruses simultaneously. Influenza viruses are ideal for evaluating such microarrays because of their genetic and host diversity, and the availability of an extensive sequence datab...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.10.4542-4550.2003
更新日期:2003-10-01 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::Confirmative diagnosis of visceral leishmaniasis (VL) is still a challenge at the primary health care facilities in most of the rural areas of endemicity in the Indian subcontinent. Conventional methods for parasitological confirmation are risky and require skilled personnel, and hence they are unavailable to the poor...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.05067-11
更新日期:2012-03-01 00:00:00
abstract::Bacillus cereus is a well-known cause of food-borne illness, but infection with this organism is not commonly reported because of its usually mild symptoms. A fatal case due to liver failure after the consumption of pasta salad is described and demonstrates the possible severity of the emetic syndrome. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.8.4277-4279.2005
更新日期:2005-08-01 00:00:00
abstract::Identification of chromosomal markers for rapid detection of Bacillus anthracis is difficult because significant chromosomal homology exists among B. anthracis, Bacillus cereus, and Bacillus thuringiensis. We evaluated the bacterial gyrA gene as a potential chromosomal marker for B. anthracis. A real-time PCR assay wa...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.42.1.179-185.2004
更新日期:2004-01-01 00:00:00
abstract::During an outbreak of diarrhea in a general hospital in 1992, 166 Clostridium difficile isolates from 102 patients were typed by restriction enzyme analysis (REA), arbitrarily primed PCR (AP-PCR), and protein profile analysis (PP) techniques. A total of 18 types and 5 subtypes were identified by REA, 32 types were ide...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.36.10.2957-2963.1998
更新日期:1998-10-01 00:00:00
abstract::Sera from patients with systemic infections caused by the opportunistic fungus Trichosporon beigelii have been shown to cross-react with anticryptococcal antibodies. We quantitatively compared the amounts of antigen produced and examined the expression of O-acetyl epitopes from 35 strains of T. beigelii isolated from ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.1.126-130.1995
更新日期:1995-01-01 00:00:00
abstract::Two cases of primary invasive cutaneous infections caused by the zoophilic dermatophytic species Microsporum canis are presented. The first case occurred in a liver transplant recipient who was receiving immunosuppressive therapy. Multiple erythematous papules were seen on both legs, and a biopsy revealed invasive fun...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.2.460-462.1996
更新日期:1996-02-01 00:00:00
abstract::Viral load testing for cytomegalovirus (CMV) has become the standard for the diagnosis of infection and monitoring of therapy at many transplant centers. However, no viral load test has been approved by the FDA. Therefore, many laboratories rely on laboratory-developed assays. This study evaluated the performance char...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02558-06
更新日期:2007-06-01 00:00:00
abstract::HPV68a is not efficiently detected by PCR with the PGMY primers. Version 2 of the PGMY-CHUV assay (PGv2) was developed from version 1 (PGv1) to evaluate HPV68-discordant results with the Anyplex II HPV28 assay. We now report that PGv2 is significantly more sensitive than PGv1 for HPV68a and as sensitive and specific f...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01950-14
更新日期:2014-11-01 00:00:00
abstract::Three variants of a Corynebacterium diphtheriae subsp. mitis strain belfanti, two toxigenic (phage types 7 and 11) and one nontoxigenic (phage type 7), were simultaneously isolated from the throat of an adult. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:
更新日期:1978-12-01 00:00:00
abstract::Bordetella bronchiseptica and toxigenic Pasteurella multocida are the etiologic agents of swine atrophic rhinitis. Methods currently used for their identification are time-consuming and suffer from a lack of sensitivity. We describe a colony lift-hybridization assay for detection of B. bronchiseptica and toxigenic P. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.36.11.3342-3346.1998
更新日期:1998-11-01 00:00:00
abstract::Serotyping Streptococcus pneumoniae is a technique generally confined to reference laboratories, as purchasing pneumococcal antisera is a huge investment. Many attempts have been made to modify serological agglutination techniques to make them more accessible, and more recently developments in serotyping have focused ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.6.2656-2661.2005
更新日期:2005-06-01 00:00:00
abstract::D-Arabinitol (DA) is a useful diagnostic marker for candidiasis in patients with neutropenia and other high-risk groups, but its use in unselected patients with a broad range of underlying diseases and conditions has not been studied. We used an automated enzymatic fluorometric assay to measure serum DA/creatinine rat...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01045-06
更新日期:2006-11-01 00:00:00
abstract::A 128-member specimen pooling scheme for acute HIV infection (AHI) detection was evaluated using 21 AHI specimens (range, 1,520 to 500,000 copies/ml) previously identified by RNA testing of 16-member plasma pools. HIV-1 RNA was detectable in 128-member pools for all 21 specimens; however, one pool created from a speci...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00650-11
更新日期:2011-10-01 00:00:00
abstract::Bovine tuberculosis (bTB) caused by Mycobacterium bovis is a transmissible disease notifiable to the World Organization for Animal Health and to the European Union, with ongoing efforts of surveillance and eradication in every EU member state. In Germany, a country which has been declared officially free from bovine t...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00302-18
更新日期:2018-08-27 00:00:00
abstract::Metarhizium viride has been associated with fatal systemic mycoses in chameleons, but subsequent data on mycoses caused by this fungus in reptiles are lacking. The aim of this investigation was therefore to obtain information on the presence of M. viride in reptiles kept as pets in captivity and its association with c...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02206-16
更新日期:2017-03-01 00:00:00
abstract::The radioimmunoprecipitation assay (RIPA) has been used as a confirmatory test in several ongoing and published studies of Trypanosoma cruzi in blood donors in the United States. Despite its use as a confirmatory test, few studies are available comparing RIPA to commercially available serologic test methods. Thus, we ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.38.2.639-642.2000
更新日期:2000-02-01 00:00:00
abstract::Misidentification of coagulase-negative staphylococci (CoNS) may delay appropriate treatment. We investigated 20 clinical isolates identified as Kocuria spp. by the Vitek 2 system. All were identified as CoNS by 16S rRNA gene sequencing (18 Staphylococcus epidermidis, 1 Staphylococcus haemolyticus). Four Kocuria isola...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.3.1448-1450.2005
更新日期:2005-03-01 00:00:00