Abstract
In order to investigate the radical chemistry of 3-(2-mercaptoethyl)quinazoline-2,4(1H, 3H)-dione (MECH) in homogeneous and liposomal solutions experiments were performed with pulse radiolysis, γ radiolysis and the chemical radical intiator 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH). It is shown that the thiol group represents the most sensitive group to radical attack. The thiyl radical originating from MECH is detected indirectly by product analysis and by pulse radiolysis. The thiyl radical can abstract bisallylic hydrogens from polyunsaturated fatty acids. This is shown by pulse radiolysis in homogeneous and liposomal solutions via the formation of the pentadienyl radical which has a strong and characteristic absorption band at 280 nm.
Similar content being viewed by others
References
K. Drössler, S. Leistner, Immunobiology, 189 (1993) 232.
C. Schöneich, U. Dillinger, F. Von Bruchhausen, K.-D. Asmus. Arch. Biochem. Biophys., 292 (1992) 456.
A. K. Jana, S. Agarwal, S. N. Chatterjee, Radiat. Res., 124 (1990) 7.
G. Albertini, E. Fanelli, L. Guidoni, F. Ianzini, P. Mariani, R. Masella, F. Rustichelli, V. Viti, Intern. J. Radiat. Biol., 52 (1987) 145.
M. J. O'Connell, A. Garner, Intern. J. Radiat. Biol., 44 (1983) 615.
D. J. W. Barber, J. K. Thomas, Radiat. Res., 74 (1978) 51.
M. Gütschow, K. Drössler, S. Leistner, Arch. Pharm., 328 (1995) 231.
J. A. Raleigh, W. Kremers, B. Gaboury, Intern. J. Radiat. Biol., 31 (1977) 203.
G. Minotti, Chem. Res. Toxicol., 6 (1993) 134.
C. Von Sonntag, Sulfur-Centered Reactive Intermediates in Chemistry and Biology,C. Chatgilialoglu andK.-D. Asmus (Eds), Plenum Press, New York, 1990, p. 359.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Schwinn, J., Sprinz, H., Leistner, S. et al. The effects of a thiol-containing quinazolinedione derivative (MECH) on the lipid oxidation in bilayer liposomes. J Radioanal Nucl Chem 232, 35–37 (1998). https://doi.org/10.1007/BF02383708
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02383708