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  • Title: High-performance liquid chromatographic quantitation of desmosine plus isodesmosine in elastin and whole tissue hydrolysates.
    Author: Soskel NT.
    Journal: Anal Biochem; 1987 Jan; 160(1):98-104. PubMed ID: 3105350.
    Abstract:
    Quantitation of desmosine and isodesmosine, the major crosslinks in elastin, has been of interest because of their uniqueness and use as markers of that protein. Accurate measurement of these crosslinks may allow determination of elastin degradation in vivo and elastin content in tissues, obviating lengthy extraction procedures. We have developed a method of quantitating desmosine plus isodesmosine in hydrolysates of tissue and insoluble elastin using high-performance liquid chromatographic separation and absorbance detection that is rapid (21-35 min) and sensitive (accurate linearity from 100 pmol to 5 nmol). This method has been used to quantitate desmosines in elastin from bovine nuchal ligament and lung and in whole aorta from hamster. The ability to completely separate [3H]lysine from desmosine plus isodesmosine allows the method to be used to study incorporation of lysine into crosslinks in elastin.
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