Characteristics of Staphylococcal Enterotoxin A Production and Growth of Staphylococcus aureus in Shaking and Stationary Cultures.
Summary of "Characteristics of Staphylococcal Enterotoxin A Production and Growth of Staphylococcus aureus in Shaking and Stationary Cultures."
Staphylococcal food poisoning, which is still a serious health problem worldwide, is caused by staphylococcal enterotoxin (SE) . Among many types of SE, staphylococcal enterotoxin type A (SEA) is known to be the most responsible for staphylococcal food poisoning. Production by SEA-producing strains in shaking culture has been studied by many investigators, whereas the kinetical differences between shaking and stationary cultures have not been studied intensively. Therefore, this difference was studied at various temperatures from 14℃ to 46℃ in the present study. Consequently the maximum SEA concentration and populations of SEA producer in shaking culture was higher than those in stationary culture. Of interest, however, the productivity, which is the maximum SEA amount produced by one cell, in shaking cultures was lower than that in stationary culture. Kinetic analysis clarified that SEA gene expression in staphylococcal cells preceded toxin production at optimal temperature. Next, several SEA producers were studied for the maximum toxin production at various temperatures from 14℃ to 42℃ in shaking culture. Consequently all strains showed different patterns, suggesting that the characteristics of SEA production of these strains would be strain-specific. These results in this study would provide useful, basic information to prevent staphylococcal food poisoning outbreaks.
Affiliation
Journal Details
This article was published in the following journal.
Name: Biocontrol science
ISSN: 1884-0205
Pages: 207-214
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/30584207
- DOI: http://dx.doi.org/10.4265/bio.23.207
PubMed Articles
Existing growth models for S. aureus predict growth in relation to temperature, a/NaCl and pH, and the assessment of probable Staphylococcus enterotoxin (SE) formation is based solely on the number of...
The aim of this study was to characterize enterotoxigenic Staphylococcus aureus recovered from raw cow milk from two geographical regions of Poland using pulsed-field gel electrophoresis (PFGE) and mu...
Bacteremia following Staphylococcus aureus is a serious clinical condition which is often associated with distant metastatic infections. One of the most dreaded complications of Staphylococcus aureus ...
The rate of methicillin-resistant Staphylococcus aureus (MRSA) among the total of S. aureus isolated decreased to 35.3% in 2017 in China. It is unclear whether the molecular characteristics of S. aure...
In this study, we aimed to investigate biofilm formation characteristics in clinical Staphylococcus aureus (S. aureus) isolates with erythromycin (ERY) resistance from China and further analyze their ...
Clinical Trials
The purpose of this study is to identify bacterial and/or clinical features involved in the pathogenesis of Staphylococcus aureus implant-associated infections (IAI). Materials & methods: ...
Staphylococcus aureus nasal carriage is a major risk factor of infection with this bacterium. To our best knowledge, Staphylococcus aureus colonization of the posterior nasal cavity is sti...
A Study of a Recombinant Staphylococcus Aureus Vaccine (Escherichia Coli) in Healthy Adults
This is an open-label, dose-escalation pilot study with a total of 30 participants with 10 per dosage group. The aim of the pilot study is to explore the preliminary safety of an experimen...
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...
This is a Phase Ib, randomized double-blind, placebo-controlled multiple-ascending dose study to investigate the safety, tolerability, and pharmacokinetics of multiple doses of DSTA4637S w...
Medical and Biotech [MESH] Definitions
Pneumonia, Staphylococcal
Pneumonia caused by infections with bacteria of the genus STAPHYLOCOCCUS, usually with STAPHYLOCOCCUS AUREUS.
Methicillin-resistant Staphylococcus Aureus
A strain of Staphylococcus aureus that is non-susceptible to the action of METHICILLIN. The mechanism of resistance usually involves modification of normal or the presence of acquired PENICILLIN BINDING PROTEINS.
Staphylococcal Protein A
A protein present in the cell wall of most Staphylococcus aureus strains. The protein selectively binds to the Fc region of human normal and myeloma-derived IMMUNOGLOBULIN G. It elicits antibody activity and may cause hypersensitivity reactions due to histamine release; has also been used as cell surface antigen marker and in the clinical assessment of B lymphocyte function.
Lysostaphin
A 25-kDa peptidase produced by Staphylococcus simulans which cleaves a glycine-glcyine bond unique to an inter-peptide cross-bridge of the STAPHYLOCOCCUS AUREUS cell wall. EC 3.4.24.75.
Impetigo
A common superficial bacterial infection caused by STAPHYLOCOCCUS AUREUS or group A beta-hemolytic streptococci. Characteristics include pustular lesions that rupture and discharge a thin, amber-colored fluid that dries and forms a crust. This condition is commonly located on the face, especially about the mouth and nose.
Quick Links
Advanced Search |
Login |
Subscribe |
RSS 
Relevant Topics
Food
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...
Gene Expression
The process of gene expression is used by eukaryotes, prokaryotes, and viruses to generate the macromolecular machinery for life. Steps in the gene expression process may be modulated, including the transcription, RNA splicing, translation, and post-tran...
