Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin

Endotoxins, also referred to as pyrogens, are lipopolysaccharides (LPS) present in the outer membrane of Gram-negative bacteria, and represent one of the most dangerous microbiological contaminants in water for hemodialysis and intravenous infusion. A method is presented for the simultaneous detecti...

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Autores principales:	Pallarola, Diego Andrés, Battaglini, Fernando
Publicado:	2010
Materias:	Electronic tongue Endotoxin detection Impedance spectroscopy Principal component analysis Pro-inflammatory molecules Antimicrobial proteins Bacterial lysis Binding activities Data interpretation Electrode surfaces Endotoxin neutralizing Gram-negative bacteria Inflammatory species Instrumental methods Lipopolysaccharides Multi variate analysis Multivariate discriminant analysis Outer membrane Purified water Regulatory level Simultaneous detection Spectral data Amino acids Bacteria Bacteriology Cluster analysis Decision making Dialysis Discriminant analysis Drug products Electrochemical corrosion Electrochemical impedance spectroscopy Electrodes Electronic tongues Multivariant analysis Nucleic acids Organic acids Phospholipids Proteins Spectrum analysis amino acid cationic antimicrobial protein endotoxin endotoxin neutralizing protein lipopolysaccharide nucleic acid phospholipid protein unclassified drug biomimetic material drug mixture article bacterium contamination cluster analysis controlled study discriminant analysis electrochemical impedance spectroscopy electrode electronics nonhuman principal component analysis protein binding tongue toxin analysis analysis conductometry device failure analysis devices equipment design evaluation study genetic procedures metabolism reproducibility Salmonella enterica sensitivity and specificity Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Reproducibility of Results Sensitivity and Specificity Tongue Bacteria (microorganisms) Negibacteria
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09565663_v25_n11_p2470_Heras http://hdl.handle.net/20.500.12110/paper_09565663_v25_n11_p2470_Heras
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paper:paper_09565663_v25_n11_p2470_Heras2023-06-08T15:56:14Z Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin Pallarola, Diego Andrés Battaglini, Fernando Electronic tongue Endotoxin detection Impedance spectroscopy Principal component analysis Pro-inflammatory molecules Antimicrobial proteins Bacterial lysis Binding activities Data interpretation Electrode surfaces Electronic tongue Endotoxin detection Endotoxin neutralizing Gram-negative bacteria Impedance spectroscopy Inflammatory species Instrumental methods Lipopolysaccharides Multi variate analysis Multivariate discriminant analysis Outer membrane Purified water Regulatory level Simultaneous detection Spectral data Amino acids Bacteria Bacteriology Cluster analysis Decision making Dialysis Discriminant analysis Drug products Electrochemical corrosion Electrochemical impedance spectroscopy Electrodes Electronic tongues Multivariant analysis Nucleic acids Organic acids Phospholipids Proteins Spectrum analysis Principal component analysis amino acid cationic antimicrobial protein endotoxin endotoxin neutralizing protein lipopolysaccharide nucleic acid phospholipid protein unclassified drug biomimetic material drug mixture endotoxin lipopolysaccharide article bacterium contamination cluster analysis controlled study discriminant analysis electrochemical impedance spectroscopy electrode electronics nonhuman principal component analysis protein binding tongue toxin analysis analysis conductometry device failure analysis devices drug mixture equipment design evaluation study genetic procedures metabolism reproducibility Salmonella enterica sensitivity and specificity Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue Bacteria (microorganisms) Negibacteria Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue Endotoxins, also referred to as pyrogens, are lipopolysaccharides (LPS) present in the outer membrane of Gram-negative bacteria, and represent one of the most dangerous microbiological contaminants in water for hemodialysis and intravenous infusion. A method is presented for the simultaneous detection of endotoxins and other bacterial lysis contaminating species in purified water for parenteral formulations. The technique used is electrochemical impedance spectroscopy, with data interpretation using principal component analysis (PCA), cluster analysis (CA), and multivariate discriminant analysis (MDA). Two types of electrode surfaces were modified with LPS recognition agents: (i) a 37 amino acids fragment of a 18. kDa cationic antimicrobial protein (CAP18F) that has LPS binding activity; (ii) the highly selective endotoxin neutralizing protein (ENP). Statistical multivariate analysis of the impedance spectral data allowed the detection of endotoxin at, and below, the threshold pharmaceutical regulatory level. Discrimination of LPS from samples containing proteins, nucleic acids, phospholipids or their mixtures was achieved. These results open a new route to a practical instrumental method capable of detecting and discriminating LPS from other potential pro-inflammatory species of microbiological origin, such as nucleic acids. © 2010 Elsevier B.V. Fil:Pallarola, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Battaglini, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09565663_v25_n11_p2470_Heras http://hdl.handle.net/20.500.12110/paper_09565663_v25_n11_p2470_Heras
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Electronic tongue Endotoxin detection Impedance spectroscopy Principal component analysis Pro-inflammatory molecules Antimicrobial proteins Bacterial lysis Binding activities Data interpretation Electrode surfaces Electronic tongue Endotoxin detection Endotoxin neutralizing Gram-negative bacteria Impedance spectroscopy Inflammatory species Instrumental methods Lipopolysaccharides Multi variate analysis Multivariate discriminant analysis Outer membrane Purified water Regulatory level Simultaneous detection Spectral data Amino acids Bacteria Bacteriology Cluster analysis Decision making Dialysis Discriminant analysis Drug products Electrochemical corrosion Electrochemical impedance spectroscopy Electrodes Electronic tongues Multivariant analysis Nucleic acids Organic acids Phospholipids Proteins Spectrum analysis Principal component analysis amino acid cationic antimicrobial protein endotoxin endotoxin neutralizing protein lipopolysaccharide nucleic acid phospholipid protein unclassified drug biomimetic material drug mixture endotoxin lipopolysaccharide article bacterium contamination cluster analysis controlled study discriminant analysis electrochemical impedance spectroscopy electrode electronics nonhuman principal component analysis protein binding tongue toxin analysis analysis conductometry device failure analysis devices drug mixture equipment design evaluation study genetic procedures metabolism reproducibility Salmonella enterica sensitivity and specificity Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue Bacteria (microorganisms) Negibacteria Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue
spellingShingle	Electronic tongue Endotoxin detection Impedance spectroscopy Principal component analysis Pro-inflammatory molecules Antimicrobial proteins Bacterial lysis Binding activities Data interpretation Electrode surfaces Electronic tongue Endotoxin detection Endotoxin neutralizing Gram-negative bacteria Impedance spectroscopy Inflammatory species Instrumental methods Lipopolysaccharides Multi variate analysis Multivariate discriminant analysis Outer membrane Purified water Regulatory level Simultaneous detection Spectral data Amino acids Bacteria Bacteriology Cluster analysis Decision making Dialysis Discriminant analysis Drug products Electrochemical corrosion Electrochemical impedance spectroscopy Electrodes Electronic tongues Multivariant analysis Nucleic acids Organic acids Phospholipids Proteins Spectrum analysis Principal component analysis amino acid cationic antimicrobial protein endotoxin endotoxin neutralizing protein lipopolysaccharide nucleic acid phospholipid protein unclassified drug biomimetic material drug mixture endotoxin lipopolysaccharide article bacterium contamination cluster analysis controlled study discriminant analysis electrochemical impedance spectroscopy electrode electronics nonhuman principal component analysis protein binding tongue toxin analysis analysis conductometry device failure analysis devices drug mixture equipment design evaluation study genetic procedures metabolism reproducibility Salmonella enterica sensitivity and specificity Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue Bacteria (microorganisms) Negibacteria Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue Pallarola, Diego Andrés Battaglini, Fernando Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin
topic_facet	Electronic tongue Endotoxin detection Impedance spectroscopy Principal component analysis Pro-inflammatory molecules Antimicrobial proteins Bacterial lysis Binding activities Data interpretation Electrode surfaces Electronic tongue Endotoxin detection Endotoxin neutralizing Gram-negative bacteria Impedance spectroscopy Inflammatory species Instrumental methods Lipopolysaccharides Multi variate analysis Multivariate discriminant analysis Outer membrane Purified water Regulatory level Simultaneous detection Spectral data Amino acids Bacteria Bacteriology Cluster analysis Decision making Dialysis Discriminant analysis Drug products Electrochemical corrosion Electrochemical impedance spectroscopy Electrodes Electronic tongues Multivariant analysis Nucleic acids Organic acids Phospholipids Proteins Spectrum analysis Principal component analysis amino acid cationic antimicrobial protein endotoxin endotoxin neutralizing protein lipopolysaccharide nucleic acid phospholipid protein unclassified drug biomimetic material drug mixture endotoxin lipopolysaccharide article bacterium contamination cluster analysis controlled study discriminant analysis electrochemical impedance spectroscopy electrode electronics nonhuman principal component analysis protein binding tongue toxin analysis analysis conductometry device failure analysis devices drug mixture equipment design evaluation study genetic procedures metabolism reproducibility Salmonella enterica sensitivity and specificity Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue Bacteria (microorganisms) Negibacteria Biomimetic Materials Biosensing Techniques Complex Mixtures Conductometry Endotoxins Equipment Design Equipment Failure Analysis Lipopolysaccharides Reproducibility of Results Salmonella enterica Sensitivity and Specificity Tongue
description	Endotoxins, also referred to as pyrogens, are lipopolysaccharides (LPS) present in the outer membrane of Gram-negative bacteria, and represent one of the most dangerous microbiological contaminants in water for hemodialysis and intravenous infusion. A method is presented for the simultaneous detection of endotoxins and other bacterial lysis contaminating species in purified water for parenteral formulations. The technique used is electrochemical impedance spectroscopy, with data interpretation using principal component analysis (PCA), cluster analysis (CA), and multivariate discriminant analysis (MDA). Two types of electrode surfaces were modified with LPS recognition agents: (i) a 37 amino acids fragment of a 18. kDa cationic antimicrobial protein (CAP18F) that has LPS binding activity; (ii) the highly selective endotoxin neutralizing protein (ENP). Statistical multivariate analysis of the impedance spectral data allowed the detection of endotoxin at, and below, the threshold pharmaceutical regulatory level. Discrimination of LPS from samples containing proteins, nucleic acids, phospholipids or their mixtures was achieved. These results open a new route to a practical instrumental method capable of detecting and discriminating LPS from other potential pro-inflammatory species of microbiological origin, such as nucleic acids. © 2010 Elsevier B.V.
author	Pallarola, Diego Andrés Battaglini, Fernando
author_facet	Pallarola, Diego Andrés Battaglini, Fernando
author_sort	Pallarola, Diego Andrés
title	Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin
title_short	Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin
title_full	Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin
title_fullStr	Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin
title_full_unstemmed	Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin
title_sort	electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09565663_v25_n11_p2470_Heras http://hdl.handle.net/20.500.12110/paper_09565663_v25_n11_p2470_Heras
work_keys_str_mv	AT pallaroladiegoandres electronictongueforsimultaneousdetectionofendotoxinsandothercontaminantsofmicrobiologicalorigin AT battaglinifernando electronictongueforsimultaneousdetectionofendotoxinsandothercontaminantsofmicrobiologicalorigin
_version_	1768546031036792832

Electronic tongue for simultaneous detection of endotoxins and other contaminants of microbiological origin

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