Time-resolved spectroscopy of the probe fluorescence in the study of human blood protein dynamic structure on SR beam

Autor: Ian H. Munro, Gareth R. Jones, N.K Kurek, M.N. Yakimenko, G. E. Dobretsov, T. Syrejshchikova, David T. Clarke
Rok vydání: 2000
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 448:471-477
ISSN: 0168-9002
DOI: 10.1016/s0168-9002(99)00687-7
Popis: Time-resolved spectroscopy on the SRS of the Daresbury Laboratory was used for the study of the human serum lipoproteins and human blood albumins with fluorescent probes K-37 and K-35, developed in Russia. The probe K-37 was found sensitive to the difference in dynamic properties of the lipid objects. Two sets of the parameters were used for the description of lipid dynamic structure: (1) time-resolved fluorescence spectra and (2) time-resolved fluorescence depolarization as a function of rotational mobility of lipid molecules. Each measured dynamic parameter reflected the monotonous changes of dynamic properties in the range: lipid spheres–very low density lipoproteins–low density lipoproteins–high density lipoproteins–phospholipid liposomes. The range is characterized by the increase of the ratio polar/ nonpolar lipids. Thus, time-resolved fluorescence could be used to detect some structural modifications in lipoproteins related to atherosclerosis and subsequent cardiovascular diseases development.
Databáze: OpenAIRE