Investigation on the Interaction of Hydroxyethyl Starch 130/0.4 (Voluven) and Serum Albumin for Pharmacokinetic and Toxicological Implications. 2016

Jianzhong Zhang, and Shaoyan Huang, and Yongbin Han, and Chenghai Wang, and Wei Shao, and Zhijian Fu
Shandong Provincial Hospital Affiliated to Shandong University, Jinan, 250021, People's Republic of China. profzhijianfu@163.com.

The interaction of hydroxyethyl starch 130/0.4 (Voluven) with human serum albumin (HSA) has been investigated by fluorescence (steady state and synchronous), Fourier transforms infrared (FT-IR), and circular dichroism (CD) spectroscopies. Analysis of the fluorescence quenching data of HSA by Voluven using the Stern-Volmer method revealed the formation of 1:1 ground-state complex. Evaluation of binding parameters and binding energy indicated that the binding reaction was exothermic. On the basis of fluorescence measurements, it was concluded that electrostatic forces play a crucial role in stabilizing the complex. The binding distance was calculated by using Förster resonance energy transfer (FRET) theory. The conformational changes of HSA were obtained qualitatively as well as quantitatively using synchronous fluorescence, FT-IR, and CD. The HSA underwent partial unfolding in the presence of Voluven.

UI MeSH Term Description Entries
D008958 Models, Molecular Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures. Molecular Models,Model, Molecular,Molecular Model
D011485 Protein Binding The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments. Plasma Protein Binding Capacity,Binding, Protein
D002942 Circular Dichroism A change from planar to elliptic polarization when an initially plane-polarized light wave traverses an optically active medium. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Circular Dichroism, Vibrational,Dichroism, Circular,Vibrational Circular Dichroism
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006895 Hydroxyethyl Starch Derivatives Starches that have been chemically modified so that a percentage of OH groups are substituted with 2-hydroxyethyl ether groups. Hetastarch,Elohes,HAES-steril,Hemohes,Hespan,Hydroxyethyl Starch (130 KD-0.4 Substitution),Hydroxyethyl Starch 130-0.4,Hydroxyethylated Starches,Pentafraction,Pentaspan,Pentastarch,Plasmasteril,Starches, 2-Hydroxyethyl,2-Hydroxyethyl Starches,Derivatives, Hydroxyethyl Starch,Hydroxyethyl Starch 130 0.4,Starch Derivatives, Hydroxyethyl,Starches, 2 Hydroxyethyl,Starches, Hydroxyethylated
D000072417 Protein Domains Discrete protein structural units that may fold independently of the rest of the protein and have their own functions. Peptide Domain,Protein Domain,Domain, Peptide,Domain, Protein,Domains, Peptide,Domains, Protein,Peptide Domains
D001665 Binding Sites The parts of a macromolecule that directly participate in its specific combination with another molecule. Combining Site,Binding Site,Combining Sites,Site, Binding,Site, Combining,Sites, Binding,Sites, Combining
D012709 Serum Albumin A major protein in the BLOOD. It is important in maintaining the colloidal osmotic pressure and transporting large organic molecules. Plasma Albumin,Albumin, Serum
D013050 Spectrometry, Fluorescence Measurement of the intensity and quality of fluorescence. Fluorescence Spectrophotometry,Fluorescence Spectroscopy,Spectrofluorometry,Fluorescence Spectrometry,Spectrophotometry, Fluorescence,Spectroscopy, Fluorescence
D013816 Thermodynamics A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed) Thermodynamic

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