2005
DOI: 10.1002/cyto.a.20109
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Quantification of gliadin levels to the picogram level by flow cytometry

Abstract: Background: Celiac disease is a widely prevalent enteropathy caused by intolerance to gliadin, one of the gluten proteins. We developed two methods for the analysis of gliadin levels. Both methods use flow cytometry and rat antibodies against a 16-residue peptide of gliadin. The peptide is common to the ␣-, ␤-, ␥-, and -gliadins. Methods: In the one-site assay, the antigen (gliadin standard or food extract) was adsorbed on 3-m latex particles. Sensitized particles were then incubated, in this order, with rat a… Show more

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Cited by 12 publications
(8 citation statements)
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“…Despite the success of PCR techniques in food products, similar studies in beer tested positive for yeast DNA, but were negative for plant DNA (Hotzel, Müller, & Sachse, 1999), limiting their application in highly processed products such as beer. Additionally, fluorescence correlation spectroscopy (Varriale et al, 2007) and flow cytometry (Capparelli, Ventimiglia, Longobardo, & Iannelli, 2005) have also been used to measure gliadins in food. Many of these methods suffer from the lack of suitable calibration standards.…”
Section: Proteins In Beer -Measurementmentioning
confidence: 99%
“…Despite the success of PCR techniques in food products, similar studies in beer tested positive for yeast DNA, but were negative for plant DNA (Hotzel, Müller, & Sachse, 1999), limiting their application in highly processed products such as beer. Additionally, fluorescence correlation spectroscopy (Varriale et al, 2007) and flow cytometry (Capparelli, Ventimiglia, Longobardo, & Iannelli, 2005) have also been used to measure gliadins in food. Many of these methods suffer from the lack of suitable calibration standards.…”
Section: Proteins In Beer -Measurementmentioning
confidence: 99%
“…In addition, polyclonal antibodies against gluten peptides have been prepared for potential use in ELISAs (333). For increasing the sensitivity of antibody based detection to picogram level, modifications like adsorption of food sources on small latex particles, fluorescent labeling, and flow cytometry have been investigated (334).…”
Section: Methods For Detection Of Gluten In Foodmentioning
confidence: 99%
“…Whole gliadin standards: At first, 1 mg of gliadin (code G3375, Sigma-Aldrich) was dissolved in one mL of 70% ethanol. Subsequently, the insoluble material was eliminated by centrifuging at 10000 ×g, diluted in 60% ethanol (100 to 1 ng/mL), and used as a standard [18] . Qualitative assay of AN-PEP: In accordance with the following protocols, phenotypic tests were conducted.…”
Section: Concentration Of An-pepmentioning
confidence: 99%