| Morphological and physiological changes of Staphylococcus aureus exposed to hypochlorous acid. | |
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MedLine Citation:
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PMID: 14962048 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIMS: To characterize hypochlorous acid (HOCl) stress resistance of Staphylococcus aureus and to assess physiological state and changes in cell morphology. METHODS AND RESULTS: Clinical wild-type strain of S. aureus was used in the stress with HOCl at concentrations ranging from 0 to 4 mg l(-1). Concentrations below 1.5 mg l(-1) caused no significant drop in viability. During 2 h of HOCl stress at 2 mg l(-1), there was appearance of minicells capable of passing through the 0.45 microm pores of filtration membranes. Intracellular proteins increased gradually to reach a level of 51% of dry weight and an enhanced synthesis of at least two proteins of 23 and 220 kDa was concluded. CONCLUSIONS, SIGNIFICANCE AND IMPACT OF THE STUDY: Staphylococcus aureus can undergo morphological and physiological changes during 2 h of exposure to 2 mg l(-1) of HOCl, which represents an adaptative response towards the hypochlorous acid stress. This evolution limits the use of 0.45 microm pores size membrane filters for research on S. aureus in waters and the clinical environment. |
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Authors:
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N Abid; S Maalej; S Rouis |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Letters in applied microbiology Volume: 38 ISSN: 0266-8254 ISO Abbreviation: Lett. Appl. Microbiol. Publication Date: 2004 |
Date Detail:
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Created Date: 2004-02-13 Completed Date: 2004-04-22 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8510094 Medline TA: Lett Appl Microbiol Country: England |
Other Details:
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Languages: eng Pagination: 245-50 Citation Subset: IM |
Affiliation:
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Laboratoire de Microbiologie, Faculté des Sciences de Sfax, Sfax, Tunisia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Bacterial Proteins
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metabolism Colony Count, Microbial Filtration Hypochlorous Acid / pharmacology* Oxidants / pharmacology Phosphoric Monoester Hydrolases / metabolism Staphylococcus aureus / cytology, drug effects*, metabolism Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Bacterial Proteins; 0/Oxidants; 7790-92-3/Hypochlorous Acid; EC 3.1.3.-/Phosphoric Monoester Hydrolases |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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