Abstract:
:Carbapenems are important last-line antibiotics for the treatment of hospital infections. Enterobacteriaceae (such as Klebsiella pneumoniae or Escherichia coli) expressing the "New Delhi Metallo-β-lactamase" gene bla(NDM-1) are resistant to carbapenems and were predicted to become a major global health problem. To cope with this emerging threat, there is a need for rapid and sensitive molecular assays to detect bla(NDM-1) in carbapenem-resistant Enterobacteriaceae from clinical isolates. In diagnostic laboratories, real-time PCR is the current gold standard for the sensitive and rapid detection of pathogens. We describe a real-time PCR assay as well as two conventional PCR assays to detect bla(NDM-1). Only minute amounts of total DNA extracted from one bacterial colony are sufficient to allow detection of bla(NDM-1) by real-time PCR within less than 1 h. We also introduce a chemically synthesized bla(NDM-1) gene as a convenient positive control for those laboratories wishing to setup in-house assays for bla(NDM-1) detection. Importantly, our study represents a proof of principle for the usefulness of rapidly synthesized genes serving as positive controls for novel diagnostic PCR assays of emerging pathogens during the initial phase after their discovery when biological isolates are still rare and not commonly available.
journal_name
Med Microbiol Immunoljournal_title
Medical microbiology and immunologyauthors
Krüttgen A,Razavi S,Imöhl M,Ritter Kdoi
10.1007/s00430-011-0189-ysubject
Has Abstractpub_date
2011-05-01 00:00:00pages
137-41issue
2eissn
0300-8584issn
1432-1831journal_volume
200pub_type
杂志文章abstract::NFR nude (nu/nu) and euthymic (+/nu) littermates were infected with coxsackievirus B3 (CBV-3) and assayed for virus persistence in the heart, pancreas and spleen, for development of myocarditis and for antibody production. The virus grew to higher titer and persisted longer in hearts of nu/nu mice. In both types of mi...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02123563
更新日期:1984-01-01 00:00:00
abstract::A sentinel surveillance system of the public health service for acute respiratory diseases (ARD), especially influenza, has been realized in the Free State of Saxony of Germany for 25 years. The epidemiological sentinel is based on weekly registration of morbidity and mathematical-statistical calculations. For a micro...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-002-0136-z
更新日期:2002-12-01 00:00:00
abstract::A method for the purification and concentration of Cytomegalovirus nucleocapsids and particles complete with envelope is described. Antibody to either nucleocapsid or envelope antigens can be detected in human sera. In patients with CMV disease the antibodies to the envelope antigen could not be detected before the 3r...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02121005
更新日期:1975-07-02 00:00:00
abstract::The development in rabbits of antibodies against common thermolabile Escherichia coli surface antigens - and against O and K antigens - was investigated. Three strains, E3b (O75:K95:H5), E56b (O8:K27:H-), and H61 (O45:K1:H10), and five rabbits per strain were used. Immunization was carried out by routine procedures us...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02122676
更新日期:1981-01-01 00:00:00
abstract::Lack of virus-specific cell-mediated immunity (CMI) is associated with worse viral infection outcome in hematopoietic stem cell transplantation (HSCT). We aimed to evaluate the role of immunological monitoring of Epstein-Barr virus (EBV) infection in addition to virological one in 33 adult and 18 pediatric allogeneic ...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-019-00629-2
更新日期:2019-12-01 00:00:00
abstract::Mycobacterium avium subsp. paratuberculosis (MAP) has long been implicated as a triggering agent in Crohn's disease (CD). In this study, we investigated the growth/persistence of both M. avium subsp. hominissuis (MAH) and MAP, in macrophages from healthy controls (HC), CD and ulcerative colitis patients. For viability...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-015-0393-2
更新日期:2015-12-01 00:00:00
abstract::The effects of sheep anti-murine recombinant tumor necrosis factor-alpha (TNF-alpha) on resistance to Listeria monocytogenes infection were studied in T cell-deficient nu/nu mice. The sheep anti-TNF-alpha antibody preparation was specific for TNF since it neutralized 300 U of recombinant murine TNF-alpha in vitro at a...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF00198530
更新日期:1990-01-01 00:00:00
abstract::Proteus mirabilis (P. mirabilis), a gram-negative enteric bacterium, frequently causes urinary tract infections. Many virulence factors of uropathogenic P. mirabilis have been identified, including urease, flagella, hemolysin and fimbriae. However, the functions of polyphosphate kinase (PPK), which are related to the ...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-015-0430-1
更新日期:2016-04-01 00:00:00
abstract::Pteridine derivatives neopterin and 7,8-dihydroneopterin are produced by human macrophages and dendritic cells upon stimulation with interferon-gamma (IFN-gamma) and therefore become detectable in increased amounts in humans during cell-mediated (Th1-type) immune response. Compounds produced upon influence of cytokine...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-006-0025-y
更新日期:2007-03-01 00:00:00
abstract::Human cytomegalovirus (HCMV) infection modulates the host cell cycle to create an environment that is optimal for viral gene expression, DNA replication, and production of infectious virus. The virus mostly infects quiescent cells and thus must push the cell into G1 phase of the cell cycle to co-opt the cellular mecha...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章,评审
doi:10.1007/s00430-015-0396-z
更新日期:2015-06-01 00:00:00
abstract::We have examined 118 oral squamous cell carcinomas, 72 oral leukoplakias, 12 cases of cheilitis and 65 of oral lichen planus for the presence of human papillomavirus (HPV) 6/11, 16 and 18 DNA by PCR/Southern blot hybridization. HPV DNA were found in 51/118 carcinomas (43.2%), in 16/72 (22.2%) leukoplakias, 3/12 (25.0%...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-002-0161-y
更新日期:2003-08-01 00:00:00
abstract::It is known that tetraspanin proteins are involved in many physiological somatic cell mechanisms. Additionally, research has indicated they also have a role in various infectious diseases and cancers. This review focuses on the molecular interactions underlying the tetraspanin web formation in gametes. Primarily, tetr...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章,评审
doi:10.1007/s00430-020-00676-0
更新日期:2020-08-01 00:00:00
abstract::IgG responses are fundamental to adaptive immunity and document immunological memory of previous pathogen encounter. While specific antigen recognition is mediated by the variable F(ab')2 domain of IgG, various effector functions become activated via the constant Fcγ part bridging IgG-opsonized targets to FcγR-express...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-016-0457-y
更新日期:2016-10-01 00:00:00
abstract::A total of 114 Clostridium difficile strains were analysed for a possible correlation between serological susceptibility to chloramphenicol, tetracycline and clindamycin, and serogrouping. All 17 chloramphenicol-resistant strains belonged to serovar I, while none of 32 tetracycline-resistant strains belonged to serova...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF00200678
更新日期:1987-01-01 00:00:00
abstract::A set of 12 rapid biochemical tests--lysinedecarboxylase, ornithinedecarboxylase, beta-galactosidase, urease, hydrogensulphide, indole, acetoin, deoxyribonuclease, esculin, mannitol, raffinose and sorbitol--were selected from an original set of 13 tests and were found to give 98% accurate reactions within 4 hrs of inc...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02122710
更新日期:1975-09-19 00:00:00
abstract::The essential protein lysyl-tRNA synthetase (LysRS) exists in two unrelated forms, a class I and a class II-type aminoacyl-tRNA synthetase. Comparative genome sequence analysis revealed that Borrelia burgdorferi sensu lato, the etiological agent of Lyme disease, contains a class I-type LysRS, whereas its tick and mamm...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-002-0149-7
更新日期:2003-05-01 00:00:00
abstract::A microcytoxicity assay with 3H-proline prelabeled target cells was used for the detection of sensitized lymphoid spleen cells from STU inbred mice inoculated with Moloney sarcoma virus (MSV-M) or ascitic MSV-M tumor cells. The target cell line was derived from ascitic MSV-M tumor cells. With regard to the specificity...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02121319
更新日期:1976-06-01 00:00:00
abstract::The presence of Borna disease virus (BDV)-specific RNA was traced by the reverse transcriptase-polymerase chain reaction in conjunctival fluid, nasal secretions and saliva of horses which were seropositive but did not have any history of clinical Borna disease. Positive reactions encompassed sequences encoding the p24...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF00191945
更新日期:1993-12-01 00:00:00
abstract::Thrombi formation was demonstrated in mesenteric microcirculation of guinea pigs inoculated with Fusobacterium necrophorum and the bacterial hemagglutinin (HA). The thrombi were initially observed in venules and later, in arterioles. Immunofluorescence study revealed that the HA bound to the thrombi in the microcircul...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF00203305
更新日期:1989-01-01 00:00:00
abstract::Phosphorylcholine (ChoP) is covalently incorporated into bacterial surface structures, contributing to host mimicry and promoting adhesion to surfaces. Our aims were to determine the frequency of ChoP display among Aggregatibacter actinomycetemcomitans strains, to clarify which surface structures bear ChoP, and whethe...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-018-0554-1
更新日期:2018-11-01 00:00:00
abstract::Cytomegalovirus vaccine development started in the 1970s with attenuated strains. In the 1980s, one of the strains was shown to be safe and effective in renal transplant patients. Then, attention switched to glycoprotein gB, which was shown to give moderate but transient protection against acquisition of the virus by ...
journal_title:Medical microbiology and immunology
pub_type: 历史文章,杂志文章,评审
doi:10.1007/s00430-015-0388-z
更新日期:2015-06-01 00:00:00
abstract::Serum-starved human foreskin fibroblasts were infected by human cytomegalovirus (Towne strain) that is thought to induce DNA replication in host cells during lytic infection. At various times postinfection, the cultures were pulse labeled with either 3H-thymidine or 14C-thymidine and 3H-lysine to examine DNA synthesis...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02121653
更新日期:1980-02-01 00:00:00
abstract::A 33-kDa protein (TB33) was isolated from a delipidated cell sonicate (CS) of Mycobacterium tuberculosis H37Rv (grown in Middlebrook 7H9 broth supplemented with glucose) using immobilized metal affinity chromatography (IMAC) on a nickel-nitrilotriacetic acid (Ni-NTA) column. TB33 could not be isolated from the culture...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s004300050025
更新日期:1996-11-01 00:00:00
abstract::Since the dynamics of transmission of human cytomegalovirus (HCMV) have not been clarified yet, we assessed a possible change in HCMV seroprevalence in Frankfurt am Main, Germany during the past twenty years and tried to detect variables with an impact on epidemiology. Between 1/1/1988 and 10/15/2008, a total of 54443...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s00430-009-0136-3
更新日期:2010-02-01 00:00:00
abstract::We have studied the incidence of enterotoxigenic and enteropathogenic Escherichia coli strains associated with infant diarrhoeal disease in Galicia (North-west Spain). During a period of 9 months we isolated heat-labile enterotoxin-positive strains in 2.1% of children with diarrhoea examined, whereas the production of...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02123802
更新日期:1983-01-01 00:00:00
abstract::In order to take the conditions of natural Herpes simplex virus (HSV) infection into consideration, the genetic resistance of C57-Bl mice, which was established by intraperitoneal HSV-1 infection [Lopez, 1975], was investigated in vaginally infected mice. The course of infection in the mucous membranes did not differ ...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02123624
更新日期:1982-01-01 00:00:00
abstract::The antiviral activity of mouse fibroblast interferon against vesicular stomatitis virus was investigated in L-929 mouse fibroblasts and the ganglioside-deficient L-929 mutant cells (ATCC clone NCTC 2071). Although it has been widely reported that gangliosides serve as primary receptors for interferon at the cellular ...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/BF02125527
更新日期:1981-01-01 00:00:00
abstract::Neutrophil extracellular traps (NETs) have recently been discovered as a central part of antimicrobial innate immunity. In the meanwhile, evidence accumulated that NETs are also generated upon non-infectious stimuli in various clinical settings. In acute or chronic inflammatory disorders aberrantly enhanced NET format...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章,评审
doi:10.1007/s00430-009-0121-x
更新日期:2009-11-01 00:00:00
abstract::The infant rat model is widely used to study the pathogenesis of meningitis caused by a variety of gram-positive and gram-negative bacteria. However, the interpretation of published results concerning meningitis is difficult in many records because the fact that blood contamination of the cerebrospinal fluid (CSF) can...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s004300050011
更新日期:1996-05-01 00:00:00
abstract::The aroB gene from Helicobacter pylori strain P1 was cloned and further characterized by sequence analysis and by functional complementation of the aroB mutation in Escherichia coli. The aroB gene encodes the enzyme 3-dehydroquinate synthase which catalyzes one of the early steps in the shikimate pathway. This pathway...
journal_title:Medical microbiology and immunology
pub_type: 杂志文章
doi:10.1007/s004300050054
更新日期:1997-10-01 00:00:00