Document Detail

Used cot mattresses as potential reservoirs of bacterial infection: nutrient availability within polyurethane foam.
MedLine Citation:
PMID:  18042213     Owner:  NLM     Status:  MEDLINE    
AIM: To evaluate possible source of nutrients for bacterial growth within polyurethane (PU) foam of used cot mattresses as determinants of bacterial population density. METHODS AND RESULTS: Used infant mattresses (n = 30) were analysed for bacteria capable of degrading colloidal PU and for aqueous soluble chemical components (aromatic amines, ammonium ions, phosphates and protein). Mattress type (waterproof cover vs exposed PU foam at the infant-head region), mattress age and previous use by another child were evaluated as factors that could influence the measured parameters. The levels of protein extracted from PU foam were (i) significantly (P = 0.0019) higher for mattresses lacking a waterproof cover at the infant-head region and (ii) positively correlated with both culturable bacterial population densities of the PU foams and extent of growth of Staphylococcus aureus on aqueous leachates. No statistically significant (P > 0.05) associations between other measured parameters and mattress type/use factors were identified. CONCLUSIONS: Infant use of cot mattresses with exposed PU foam leads to accumulation of proteins within the PU, which can promote bacterial growth. SIGNIFICANCE AND IMPACT OF THE STUDY: The study provides a mechanistic explanation for increased levels of bacteria associated with exposed PU of cot mattresses. In the context of the common bacterial toxins hypothesis for the sudden infant death syndrome (SIDS), this could explain the lowered risk of SIDS associated with use of a waterproof cover above the mattress.
R O Jenkins; R E Sherburn
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-11-26
Journal Detail:
Title:  Journal of applied microbiology     Volume:  104     ISSN:  1365-2672     ISO Abbreviation:  J. Appl. Microbiol.     Publication Date:  2008 Feb 
Date Detail:
Created Date:  2008-01-24     Completed Date:  2008-05-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9706280     Medline TA:  J Appl Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  526-33     Citation Subset:  IM    
School of Allied Health Sciences, De Montfort University, The Gateway, Leicester, UK.
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MeSH Terms
Bacteria / isolation & purification,  metabolism
Bacterial Infections / transmission*
Beds / microbiology*
Child, Preschool
Colony Count, Microbial
Disease Reservoirs
Equipment Contamination
Fungi / physiology
Infant Equipment / microbiology*
Infant, Newborn
Microbial Viability
Proteins / metabolism*
Staphylococcus aureus / isolation & purification,  metabolism*
Sudden Infant Death / etiology
Reg. No./Substance:
0/Polyurethanes; 0/Proteins; 9009-54-5/polyurethane foam

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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