Abstract:
:Different aspects of the terms strain, clone and species are discussed. The term strain is commonly used to denote a pure culture - here called 'the strain in the taxonomic sense' - but does also refer to a natural concept closely related to the clone. The term clone on the other hand is used both in a general and in a more restricted sense, the latter indicating a low degree of genetic exchange. The important distinction between the definition of a species and the criteria for a species is emphasised and the main kinds of criteria are considered.
journal_name
J Med Microbioljournal_title
Journal of medical microbiologyauthors
Dijkshoorn L,Ursing BM,Ursing JBdoi
10.1099/0022-1317-49-5-397keywords:
subject
Has Abstractpub_date
2000-05-01 00:00:00pages
397-401issue
5eissn
0022-2615issn
1473-5644journal_volume
49pub_type
杂志文章,评审abstract:PURPOSE:Diabetic patients seem to be predisposed to cutaneous candidiasis. In this study, we evaluated the interference of diabetic conditions in alloxan-induced diabetic mice in relation to the development of C. albicans infection, density of M1 and M2 macrophages, distribution of collagen type I and III and anti-infl...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.000496
更新日期:2017-06-01 00:00:00
abstract::The opsonic requirements of Helicobacter pylori were investigated in a series of experiments with human polymorphonuclear leucocytes (PMNL). Pre-incubation of H. pylori with pooled normal human serum (NHS) in concentrations of 5-20% significantly increased the uptake of radiolabelled bacteria by PMNL. Treatment of the...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-38-3-209
更新日期:1993-03-01 00:00:00
abstract::Enteroaggregative Escherichia coli (EAEC) is an important agent of diarrhoeal diseases worldwide. The role of EAEC virulence factors in the clinical outcome of infection is not completely defined. This case-control study investigated the prevalence of EAEC, its virulence genes and the antimicrobial resistance profile ...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.000055
更新日期:2015-05-01 00:00:00
abstract::One hundred and twenty consecutive isolates of Neisseria gonorrhoeae from the County of Avon, UK, were examined by auxotyping and penicillin susceptibility testing. Requirements for proline (Pro), arginine (Arg), hypoxanthine (Hyp), uracil (Ura) and methionine (Met) were determined with a modified Heckels' medium. Pro...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-16-3-295
更新日期:1983-08-01 00:00:00
abstract::A simple method is described for testing milk specimens from nursing mothers for the presence of RNA-dependent DNA-polymerase activity. Positive results were obtained in five of 137 women (3.6%) without a family history of breast cancer, and in six of 31 women (19.3%) with a family history of breast cancer. ...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-8-3-447
更新日期:1975-08-01 00:00:00
abstract::Certain bile acids inhibit the growth in vitro of organisms commonly found in the intestine and, in particular, anaerobic bacteria. As the importance of this effect in vivo has not been demonstrated, we investigated changes in intestinal flora in the rat after diversion of bile to the urinary bladder. Five days after ...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-10-2-241
更新日期:1977-05-01 00:00:00
abstract::Nosocomial infections with enterococci are an increasing problem in modern medical practice due to the development of resistance to a wide range of antibiotics, including the glycopeptides vancomycin and teicoplanin. An increasing number of vancomycin-resistant enterococci (VRE) have been cultured from clinical specim...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-48-10-935
更新日期:1999-10-01 00:00:00
abstract::The aim of this study was to assess the primary and combined resistances of Helicobacter pylori isolates obtained from paediatric patients in 2000-2001 to seven antimicrobial agents. Resistance rates of pre-treatment isolates from 115 children were investigated by the limited agar dilution method alone and by the E-te...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/0022-1317-51-9-786
更新日期:2002-09-01 00:00:00
abstract::Macrolide antibiotics are frequently administered to treat mycoplasmal pneumonia. However, macrolide-resistant Mycoplasma pneumoniae has recently been isolated from clinical specimens in Japan. Clarithromycin (CAM) is a 14-membered-ring macrolide that has host immunomodulatory activity. Here, we established a gnotobio...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.014191-0
更新日期:2010-06-01 00:00:00
abstract::Production of beta-lactamase by 15 strains of Haemophilus influenzae has been investigated. All the strains produce a constitutive beta-lactamase, which readily hydrolyses penicillin G, ampicillin, and cephaloridine. The beta-lactamase produced by these strains is indistinguishable from the type-IIIa enzyme commonly f...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-8-3-437
更新日期:1975-08-01 00:00:00
abstract::A down-flow immunoassay has been developed to detect serum mannan antigens, and the test was recently marketed as the Unimedi Candida monotest. Using 251 serum samples from 105 patients with candidaemia, a comparison of the Unimedi Candida monotest with the Cand-Tec latex agglutination test and 2 microplate enzyme imm...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.46314-0
更新日期:2006-05-01 00:00:00
abstract::The recently-introduced semi-automated bacterial identification system, the Quantum II BID, is designed to identify fermentative and non-fermentative gram-negative bacilli in 4-5 h. The system was evaluated independently by the two participating laboratories. Inter-laboratory reproducibility was determined by testing ...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-21-2-145
更新日期:1986-03-01 00:00:00
abstract::Thirty-seven multidrug-resistant and 13 pan-susceptible isolates of Mycobacterium tuberculosis were analysed for the diversity of genotypes associated with known drug-resistance mechanisms. The isolates were obtained from patients attending a university tuberculosis clinic in Monterrey, Mexico. A total of 25 IS6110-RF...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.05343-0
更新日期:2004-02-01 00:00:00
abstract::A serial multiplex PCR approach was reformulated for pneumococcal serotyping to test 153 clinical isolates from children in Mozambique. This approach identified serotypes in 139 (90.8%) of 153 isolates; 126 (82.4%) were identified within two reactions. This approach in developing countries would require minimal traini...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.47346-0
更新日期:2007-09-01 00:00:00
abstract::As Mycobacterium leprae proliferate inside macrophages, it has been speculated that catalase encoded by katG may protect the bacilli from deleterious effects of peroxide generated from the macrophage and may also play a crucial role in the survival of M. leprae in vivo. However, unlike that of M. tuberculosis, the kat...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/0022-1317-50-8-675
更新日期:2001-08-01 00:00:00
abstract::Oral biofilms are one of the greatest challenges in dental research. The present study aimed to investigate initial bacterial colonization of enamel surfaces in situ using fluorescence in situ hybridization (FISH) over a 12 h period. For this purpose, bovine enamel slabs were fixed on buccal sites of individual splint...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.011213-0
更新日期:2009-10-01 00:00:00
abstract:PURPOSE:Staphylococcus epidermidis colonies often display several morphologies and antimicrobial susceptibility patterns when cultured from device-related infections, and may represent one or multiple genotypes. Genotyping may be helpful in the clinical interpretation, but is time consuming and expensive. We wanted to ...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.000663
更新日期:2018-02-01 00:00:00
abstract:INTRODUCTION:The last few years have seen the emergence of multi-drug resistant (MDR) Gram-negative infections, which are associated with high morbidity and mortality. The indiscriminate use of colistin has led to the development of resistance, which can be diagnosed effectively by broth microdilution. Studies from Ind...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.000986
更新日期:2019-06-01 00:00:00
abstract::The global emergence of antibiotic-resistant strains of Pseudomonas aeruginosa poses a major threat in both hospital environments and the community. P. aeruginosa is an opportunistic human pathogen, and it also infects a wide range of model organisms including the nematode Caenorhabditis elegans. Quorum sensing (QS) m...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.000385
更新日期:2016-12-01 00:00:00
abstract::Fifty-seven strains of acinetobacter-like organisms were isolated over a period of 26 months from the ears of 55 patients with acute or chronic otitis media, or otitis externa, and one strain was isolated in a survey of 50 normal ears. After comparison with eight reference strains, 32 of the isolates were identified a...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-9-3-345
更新日期:1976-08-01 00:00:00
abstract::The nucleolar accumulation of Semliki Forest Virus (SFV) C protein was examined as a function of intact microtubules, intact microfilaments and accessible intermediate filaments. The cytoskeletal components do not seem to play a role in directing C protein to the nucleolus but nucleolar accumulation is energy-dependen...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-40-6-389
更新日期:1994-06-01 00:00:00
abstract::Early detection of aetiological agents is pivotal for adequate therapy for bacterial infections. Although culture is still considered the mainstay for laboratory diagnosis, it often lacks sensitivity, especially in patients already treated with antibiotics. The present study investigated the potential clinical utility...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.034280-0
更新日期:2011-12-01 00:00:00
abstract::Three specimens from 111 asymptomatic male partners of infertile couples attending the Department of Urology in Amiens, France, were examined by the PCR COBAS AMPLICOR test (Roche Molecular Diagnostics) for the presence of Chlamydia trachomatis. The specimens analysed were: first void urine (FVU), urine obtained after...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.45641-0
更新日期:2004-10-01 00:00:00
abstract::Toxoplasma gondii infection in humans is routinely assessed by serological means. Here, the authors attempted to compare the response of different Toxoplasma strains to serological tests and to evaluate the antigenic profiles of the RH and RH Ankara (TRH) strains with Western blotting. Anti-Toxoplasma IgG antibodies o...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.46712-0
更新日期:2006-10-01 00:00:00
abstract::Corynebacterium jeikeium, a member of the non-diphtheria corynebacteria, has been rarely reported as being responsible for cardiovascular-device infection. Here, we report what is believed to be the first case of C. jeikeium pacemaker infection associated with the presence of proteinase-3 antineutrophil cytoplasmic an...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.023283-0
更新日期:2011-02-01 00:00:00
abstract::Eight monoclonal antibodies (MAbs) were produced from mice immunised with whole cells of heat-killed Pasteurella multocida type A which had been cultured under iron-restricted conditions. The MAbs were selected by an enzyme-linked immunosorbent assay (ELISA) in which the antigen consisted of whole bacteria of the immu...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-33-4-217
更新日期:1990-12-01 00:00:00
abstract::The bactericidal activity of compound DR-3355, an optically active isomer of ofloxacin, was measured against Escherichia coli, Staphylococcus aureus and S. epidermidis, in nutrient broth and in phosphate-buffered saline. DR-3355 was found to be approximately twice as active as ofloxacin in terms of the concentration a...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/00222615-30-3-227
更新日期:1989-11-01 00:00:00
abstract::Introduction. The worldwide emergence of carbapenem resistance in Gram-negative bacteria makes the development of simple tests mandatory to identify antimicrobial resistance mechanisms. Enzymatic and membrane barriers are the prominent resistance mechanisms described in these bacteria. Several tests are currently used...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.001129
更新日期:2020-01-01 00:00:00
abstract::The National Institute of Care Excellence (NICE) 2007 guidance CG54, on urinary tract infection (UTI) in children, states that clinicians should use urgent microscopy and culture as the preferred method for diagnosing UTI in the hospital setting for severe illness in children under 3 years old and from the GP setting ...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.000114
更新日期:2015-09-01 00:00:00
abstract::The microbiota of the human oropharynx plays an important role in health through involvement in the aetiology of infection and the carriage of adventitious pathogens. Despite this, there are few models available for the preclinical assessment of novel antimicrobials directed to the human throat. We have profiled bacte...
journal_title:Journal of medical microbiology
pub_type: 杂志文章
doi:10.1099/jmm.0.055806-0
更新日期:2013-06-01 00:00:00