The Fluorescence Spectroscopic Studies on the Interaction of Diltiazem Hydrochloride with Bovine Serum Albumin

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Chengman Bao
Jialian Wang
Xuehong Tong
Xinhui Tang
Qingming Wang

Abstract

Aim: To explore the interaction of the diltiazem hydrochloride (DTZ) with bovine serum albumin (BSA).

Methodology: Fluorescence and UV-Vis spectroscopic techniques were used to study the interaction between diltiazem hydrochloride (DTZ) and BSA. DTZ is a nondihydropyridine calcium channel blocker used in the treatment of many kinds of diseases. The Stern-Volmer quenching constant (Ksv), the quenching rate constant of the bimolecular reaction (Kq), the binding constant (Ka), and a number of binding sites (n) of DTZ with BSA were evaluated.

Results: The results revealed that DTZ quenches the fluorescence intensity of BSA through a static quenching process. The values of ΔS and ΔH indicated that hydrophobic bond interactions played major roles in the binding process and contributed to the stability of the DTZ-BSA complex. Based on the Förster’s theory of non-radiation energy transfer, the distance between donor (BSA) and acceptor (DTZ) was less than 7 nm, which indicated that energy transfer from BSA to DTZ occurs with high probability.

Keywords:
Spectroscopy, diltiazem hydrochloride, bovine serum albumin, thermodynamic parameters

Article Details

How to Cite
Bao, C., Wang, J., Tong, X., Tang, X., & Wang, Q. (2018). The Fluorescence Spectroscopic Studies on the Interaction of Diltiazem Hydrochloride with Bovine Serum Albumin. Journal of Applied Life Sciences International, 18(3), 1-9. https://doi.org/10.9734/JALSI/2018/43574
Section
Original Research Article