Detection of Staphylococcus hyicus exfoliative toxin genes by dot blot hybridization and multiplex polymerase chain reaction.

02:28 EDT 2nd September 2015 | BioPortfolio

Summary of "Detection of Staphylococcus hyicus exfoliative toxin genes by dot blot hybridization and multiplex polymerase chain reaction."

We designed a novel DNA probe and novel PCR primer sets to detect the genes coding for S. hyicus exfoliative toxin (ET). In dot blot hybridization, the novel DNA probe hybridized with chromosomal DNA of ExhA-, ExhB-, ExhC-, ExhD-, and SHETA-producing strains. This probe also hybridized with plasmid DNA of a SHETB-producing strain. In Southern blot hybridization, the probe hybridized with a 1.5-kb HindIII fragment of chromosomal DNA from a SHETA-producing strain. We cloned the above fragment into E. coli and determined the nucleotide sequence of the SHETA gene, which proved to be almost the same (99.6% homology) as that of the ExhB gene. So it was thought that SHETA is a subtype of ExhB. In multiplex PCR using five primer sets, each gene gave a band distinguishable from the others. This multiplex PCR system had high specificity among the well-known S. hyicus ET genes. Of the 69 known ET-producing S. hyicus strains, 38, 19, 9, 2 and 1 strains have exhB, exhD exhA, shetb and exhC genes, respectively.

Affiliation

Laboratory of Veterinary Microbiology, Faculty of Veterinary Medicine, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23 Ban-cho, Towada, 034-8628 Aomori, Japan.

Journal Details

This article was published in the following journal.

Name: Microbiology and immunology
ISSN: 0385-5600
Pages:

Links

PubMed Articles [15209 Associated PubMed Articles listed on BioPortfolio]

Prevalence, Toxin Gene Profiles, and Antimicrobial Resistance of Staphylococcus aureus Isolated from Quick-Frozen Dumplings.

The aim of this study was to investigate the prevalence of Staphylococcus aureus in quick-frozen dumplings and to characterize these strains. A total of 120 dumpling samples, including lamb (n = 13), ...

Molecular Characterization of Community-Associated Methicillin-Resistant Staphylococcus aureus Isolated from Skin and Pus Samples of Outpatients in Japan.

Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) is now endemic in the United States. In Japan, CA-MRSA infections and CA-MRSA surveillance have been scarcely reported. In th...

Antimicrobial activity of extracts and isoquinoline alkaloids of selected papaveraceae plants.

Alkaloidal extracts of seven selected plants of the family Papaveraceae were studied with respect to their activity against six strains of pathogenic bacteria and their alkaloidal fingerprint. Twenty-...

In Vitro Selection of a Single-Stranded DNA Molecular Recognition Element against Clostridium difficile Toxin B and Sensitive Detection in Human Fecal Matter.

Toxin B is one of the major virulence factors of Clostridium difficile, a bacterium that is responsible for a significant number of diarrhea cases in acute care settings. Due to the prevalence of C. d...

Diversity of antimicrobial resistance and virulence genes in methicillin-resistant non-Staphylococcus aureus staphylococci from veal calves.

In this study we determined whether methicillin-resistant non-Staphylococcus aureus (MRNAS) from veal calves may be a potential reservoir of antimicrobial-resistance and virulence genes. Fifty-eight M...

Clinical Trials [1780 Associated Clinical Trials listed on BioPortfolio]

Evaluation of a Diagnostic Device for Detection of Nasal Staphylococcus Aureus

To establish the clinical test performance characteristics of sensitivity, specificity and predictive values for direct detection of nasal Staphylococcus aureus colonization against clinic...

Esophageal Cytology With FISH in Detecting Esophageal Cancer in in Participants Undergoing Esophago Gastro-Duodenoscopy or Upper Endoscopy.

This clinical trial studies whether esophageal cytology plus fluorescence in situ hybridization (FISH) is equal to or better than esophago-gastro-duodenoscopy (EGD) or upper endoscopy for ...

Rapid Detection of Staphylococcus Aureus in Burn Patients

The purpose of this study is to determine if rapid early detection of the bacteria causing sepsis in burn patients improves patient outcomes.

Botulinum Toxin for the Treatment of Involuntary Movement Disorders

Botulism is a severe form of food poisoning caused by bacteria. This bacteria produces several toxins one of which is botulinum toxin A. This toxin causes the symptoms of food poisoning....

Comparison of Elution Swab (ESwab) and Amies Transport Swabs for Screening Patients for Methicillin Resistant Staphylococcus Aureus (MRSA) and Vancomycin Resistant Enterococci (VRE) Colonization

1.To assess whether the Elution swab (ESwab) is superior to Amies transport swabs for the detection of Methicillin Resistant Staphylococcus aureus (MRSA) and Vancomycin Resistant Enterococ...

Medical and Biotech [MESH] Definitions

Species- or subspecies-specific DNA (including COMPLEMENTARY DNA; conserved genes, whole chromosomes, or whole genomes) used in hybridization studies in order to identify microorganisms, to measure DNA-DNA homologies, to group subspecies, etc. The DNA probe hybridizes with a specific mRNA, if present. Conventional techniques used for testing for the hybridization product include dot blot assays, Southern blot assays, and DNA:RNA hybrid-specific antibody tests. Conventional labels for the DNA probe include the radioisotope labels 32P and 125I and the chemical label biotin. The use of DNA probes provides a specific, sensitive, rapid, and inexpensive replacement for cell culture techniques for diagnosing infections.

Synthetic or natural oligonucleotides used in hybridization studies in order to identify and study specific nucleic acid fragments, e.g., DNA segments near or within a specific gene locus or gene. The probe hybridizes with a specific mRNA, if present. Conventional techniques used for testing for the hybridization product include dot blot assays, Southern blot assays, and DNA:RNA hybrid-specific antibody tests. Conventional labels for the probe include the radioisotope labels 32P and 125I and the chemical label biotin.

A species of gram-positive bacteria in the family STAPHYLOCOCCACEAE. It is an important opportunistic pathogen in swine.

A species of STAPHYLOCOCCUS similar to STAPHYLOCOCCUS HAEMOLYTICUS, but containing different esterases. The subspecies Staphylococcus hominis novobiosepticus is highly virulent and novobiocin resistant.

Protein exotoxins from Staphylococcus aureus, phage type II, which cause epidermal necrolysis. They are proteins with a molecular weight of 26,000 to 32,000. They cause a condition variously called scaled skin, Lyell or Ritter syndrome, epidermal exfoliative disease, toxic epidermal necrolysis, etc.


Advertisement
 

Relevant Topics

Bioinformatics
Latest News Clinical Trials Research Drugs Reports Corporate
Bioinformatics is the application of computer software and hardware to the management of biological data to create useful information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied...

DNA sequencing
Latest News Clinical Trials Research Drugs Reports Corporate
DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule. During DNA sequencing, the bases of a small fragment of DNA are sequentially identified from signals emitted as each fragment is re-synthesized from a ...

Advertisement
 

Searches Linking to this Article