Intermolecular recognition between pyrimethamine, an antimalarial drug and human serum albumin: Spectroscopic and docking study

2020 ◽  
Vol 311 ◽  
pp. 113270 ◽  
Author(s):  
Kabiru Abubakar Musa ◽  
Ting Ning ◽  
Saharuddin B. Mohamad ◽  
Saad Tayyab
2019 ◽  
Vol 20 (11) ◽  
pp. 2727 ◽  
Author(s):  
Safikur Rahman ◽  
Md Tabish Rehman ◽  
Gulam Rabbani ◽  
Parvez Khan ◽  
Mohamed F AlAjmi ◽  
...  

Thiazolidinedione derivatives (TZDs) have attracted attention because of their pharmacological effects. For example, certain TZDs have been reported to ameliorate type II diabetes by binding and activating PPARs (peroxisome proliferator-activated receptors). Nonetheless, no information is available on the interaction between the heterocyclic 2, 4-thiazolidinedione (2,4-TZD) moiety and serum albumin, which could affect the pharmacokinetics and pharmacodynamics of TZDs. In this study, we investigated the binding of 2,4-TZD to human serum albumin (HSA). Intrinsic fluorescence spectroscopy revealed a 1:1 binding stoichiometry between 2,4-TZD and HSA with a binding constant (Kb) of 1.69 ± 0.15 × 103 M−1 at 298 K. Isothermal titration calorimetry studies showed that 2,4-TZD/HSA binding was an exothermic and spontaneous reaction. Molecular docking analysis revealed that 2,4-TZD binds to HSA subdomain IB and that the complex formed is stabilized by van der Waal’s interactions and hydrogen bonds. Molecular dynamics simulation confirmed the stability of the HSA-TZD complex. Further, circular dichroism and 3D fluorescence studies showed that the global conformation of HSA was slightly altered by 2,4-TZD binding, enhancing its stability. The results obtained herein further help in understanding the pharmacokinetic properties of thiazolidinedione.


2020 ◽  
Vol 32 (6) ◽  
pp. 2854-2862 ◽  
Author(s):  
Faizan Abul Qais ◽  
Fohad Mabood Husain ◽  
Rais Ahmad Khan ◽  
Iqbal Ahmad ◽  
Iftekhar Hassan

Biopolymers ◽  
2019 ◽  
Vol 111 (2) ◽  
Author(s):  
Kabiru A. Musa ◽  
Nor F. W. Ridzwan ◽  
Saharuddin B. Mohamad ◽  
Saad Tayyab

2020 ◽  
Vol 53 (5) ◽  
pp. 391-405
Author(s):  
Jaslene Anne Francis ◽  
Md. Shalauddin ◽  
Nor Farrah Wahidah Ridzwan ◽  
Saharuddin B. Mohamad ◽  
Wan Jeffrey Basirun ◽  
...  

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