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Chromatographia

, Volume 27, Issue 5–6, pp 225–227 | Cite as

Measurement of elastin hydrolysis by reverse-phase HPLC with on-line post-colum derivatization

  • Th. A. Stein
  • J. R. Cohen
  • C. Mandell
  • L. Wise
Late Papers from the 17th International Symposium on Chromatography, Vienna, Austria, September 25–30, 1988

Summary

Excessive breakdown of elastin, a structural protein, may be related to aortic disease and emphysema. Since L-valyl-L-proline occurs in high concentrations in elastin, a rapid and sensitive method using HPLC with post-column on-line derivatization was used to measure the dipeptide from swine aortic tissue, and the amount of elastin present was determined. Elastin was extracted by alkaline hydrolysis. After neutralization and filtration, the sample was injected onto a ODS-2 gel column, and the dipeptide was eluted by a linear gradient of 0 to 10% of 1-propanol in 50 mM heptafluorobutyrate, pH 3, at a flow rate of 1 ml/min. The eluent was reacted with fluorescamine at pH 8.6, and fluorescence was detected at an excitation wavelength of 395 nm and a 455 nm cutoff emission filter.

Key Words

Column liquid chromatography Reverse-phase chromatography Elastin Hydrolysis measurement On-line post-column derivatization 

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Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1989

Authors and Affiliations

  • Th. A. Stein
    • 1
    • 2
  • J. R. Cohen
    • 1
    • 2
  • C. Mandell
    • 1
    • 2
  • L. Wise
    • 1
    • 2
  1. 1.Department of SurgeryLong Island Jewish Medical CenterNew Hyde Park
  2. 2.The State University of New YorkStony BrookUSA

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