1
|
Ngo DTN, Nguyen TQ, Huynh HK, Nguyen TT. Thermodynamics of selective serotonin reuptake inhibitors partitioning into 1,2-dioleoyl- sn-glycero-3-phosphocholine bilayers. RSC Adv 2020; 10:39338-39347. [PMID: 35518408 PMCID: PMC9057331 DOI: 10.1039/d0ra07367a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 10/14/2020] [Indexed: 11/28/2022] Open
Abstract
Knowledge of thermodynamics of lipid membrane partitioning of amphiphilic drugs as well as their binding site within the membrane are of great relevance not only for understanding the drugs' pharmacology but also for the development and optimization of more potent drugs. In this study, the interaction between two representatives of selective serotonin reuptake inhibitors, including paroxetine and sertraline, and large unilamellar vesicles (LUVs) composed of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) was investigated by second derivative spectrophotometry and Fourier transform infrared spectroscopy (FTIR) to determine the driving force of the drug partitioning across lipid membranes. It was found that temperature increase from 25 to 42 °C greatly enhanced the partitioning of paroxetine and sertraline into DOPC LUVs, and sertraline intercalated into the lipid vesicles to a greater extent than paroxetine in the temperature range examined. The partitioning of both drugs into DOPC LUVs was a spontaneous, endothermic and entropy-driven process. FTIR measurements suggested that sertraline could penetrate deeply into the acyl tails of DOPC LUVs as shown by the considerable shifts in the lipid's CH2 and C
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
O stretching modes induced by the drug. Paroxetine, however, could reside closer to the head groups of the lipid since its presence caused a larger shift in the PO2− bands of DOPC LUVs. The findings reported here provide valuable insights into the influence of small molecules' chemical structure on their molecular interaction with the lipid bilayer namely their possible binding sites within the lipid bilayer and their thermodynamics profiles of partitioning, which could benefit rational drug design and drug delivery systems. Paroxetine and sertraline have the same thermodynamics profile of phospholipid bilayer partitioning but different location within the lipid bilayer.![]()
Collapse
Affiliation(s)
- Dat T. N. Ngo
- Department of Biotechnology
- International University
- Ho Chi Minh City
- Vietnam
- Vietnam National University
| | - Trinh Q. Nguyen
- Department of Biotechnology
- International University
- Ho Chi Minh City
- Vietnam
- Vietnam National University
| | - Hieu K. Huynh
- University of Medicine and Pharmacy at Ho Chi Minh City
- Ho Chi Minh City
- Vietnam
| | - Trang T. Nguyen
- Department of Chemical Engineering
- International University
- Ho Chi Minh City
- Vietnam
- Vietnam National University
| |
Collapse
|
2
|
Do TT, Dao UP, Bui HT, Nguyen TT. Effect of electrostatic interaction between fluoxetine and lipid membranes on the partitioning of fluoxetine investigated using second derivative spectrophotometry and FTIR. Chem Phys Lipids 2017; 207:10-23. [DOI: 10.1016/j.chemphyslip.2017.07.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 06/25/2017] [Accepted: 07/01/2017] [Indexed: 12/26/2022]
|
3
|
Takegami S, Kitamura K, Ohsugi M, Ito A, Kitade T. Partitioning of organophosphorus pesticides into phosphatidylcholine small unilamellar vesicles studied by second-derivative spectrophotometry. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 145:198-202. [PMID: 25775945 DOI: 10.1016/j.saa.2015.02.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 02/16/2015] [Accepted: 02/17/2015] [Indexed: 06/04/2023]
Abstract
In order to quantitatively examine the lipophilicity of the widely used organophosphorus pesticides (OPs) chlorfenvinphos (CFVP), chlorpyrifos-methyl (CPFM), diazinon (DZN), fenitrothion (FNT), fenthion (FT), isofenphos (IFP), profenofos (PFF) and pyraclofos (PCF), their partition coefficient (Kp) values between phosphatidylcholine (PC) small unilamellar vesicles (SUVs) and water (liposome-water system) were determined by second-derivative spectrophotometry. The second-derivative spectra of these OPs in the presence of PC SUV showed a bathochromic shift according to the increase in PC concentration and distinct derivative isosbestic points, demonstrating the complete elimination of the residual background signal effects that were observed in the absorption spectra. The Kp values were calculated from the second-derivative intensity change induced by addition of PC SUV and obtained with a good precision of R.S.D. below 10%. The Kp values were in the order of CPFM>FT>PFF>PCF>IFP>CFVP>FNT⩾DZN and did not show a linear correlation relationship with the reported partition coefficients obtained using an n-octanol-water system (R(2)=0.530). Also, the results quantitatively clarified the effect of chemical-group substitution in OPs on their lipophilicity. Since the partition coefficient for the liposome-water system is more effective for modeling the quantitative structure-activity relationship than that for the n-octanol-water system, the obtained results are toxicologically important for estimating the accumulation of these OPs in human cell membranes.
Collapse
Affiliation(s)
- Shigehiko Takegami
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan.
| | - Keisuke Kitamura
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Mayuko Ohsugi
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Aya Ito
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Tatsuya Kitade
- Department of Analytical Chemistry, Kyoto Pharmaceutical University, 5 Nakauchicho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| |
Collapse
|
4
|
Omran AA. An in vitro spectrometric method for determining the partition coefficients of non-steroidal anti-inflammatory drugs into human erythrocyte ghost membranes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 104:461-467. [PMID: 23277182 DOI: 10.1016/j.saa.2012.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 11/10/2012] [Accepted: 12/02/2012] [Indexed: 06/01/2023]
Abstract
Usefulness of second derivative spectrophotometry for determining the partition coefficients (K(p)s) of four non-steroidal anti-inflammatory drugs (NSAIDs) between human erythrocyte ghost (HEG) membranes and buffer at simulated physiological conditions (pH=7.4, 37 °C) has been adequately emphasized. In the absorption spectra for each of the investigated NSAIDs, λ(max) was red-shifted in presence of HEG membranes, indicating that NSAIDs have the nature of metachromasy between lipid bilayer and water. Further quantitative spectral data for calculating K(p)s could not be obtained from the absorption spectra because of the presence of background signal impacts of HEG lipid bilayers. Second derivative spectra were calculated from absorption spectra and fortunately showed three isosbestic derivative points for each NSAID, indicating without doubt that the background signals were entirely eliminated. From the relation between the derivative intensity change (ΔD) induced by addition of HEG membranes, K(p)s were calculated and obtained with RSD of below 6%. Fractions of partitioned NSAIDs are in well-harmony with that derived from the experimental values. Moreover, validity of the proposed method was confirmed. Conclusively, the second derivative spectrometry has proven to be a facile, reliable and more expeditious method to obtain in vitro K(p)s of drugs to HEG without previous separation.
Collapse
Affiliation(s)
- Ahmed A Omran
- Chemistry Department, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt.
| |
Collapse
|
5
|
Omran A, El-Sayed AA, Shehata A. Second Derivative Spectrophotometric Determination of the Binding Constant Between Codeine Phosphate and Bovine Serum Albumin. J SOLUTION CHEM 2012. [DOI: 10.1007/s10953-012-9869-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
6
|
Omran AA, El-Sayed AA, Shehata A. Binding of benzodiazepine drugs to bovine serum albumin: a second derivative spectrophotometric study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 83:362-367. [PMID: 21930425 DOI: 10.1016/j.saa.2011.08.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2011] [Revised: 06/03/2011] [Accepted: 08/24/2011] [Indexed: 05/31/2023]
Abstract
The binding constants (K values) of three benzodiazepine drugs to bovine serum albumin were determined by a second derivative spectrophotometric method. Despite the sample and reference samples were prepared in the same way to maintain the same albumin content in each sample and reference pair, the absorption spectra show that the baseline compensation was incomplete because of the strong background signals caused by bovine serum albumin. Accordingly, further quantitative spectral information could not be obtained from these absorption spectra. On the other hand, the calculated second derivative spectra clearly show isosbestic points indicating the complete removal of the residual background signal effects. Using the derivative intensity differences (ΔD values) of the studied benzodiazepine drugs before and after the addition of albumin, the binding constants were calculated and obtained with R.S.D. of less than 8%. The interactions of drugs with bovine serum albumin were investigated using Scatchard's plot. In addition, the consistency between the fractions of bound benzodiazepine calculated from the obtained K values and the experimental values were established. The results indicate that the second derivative method can be advantageously applicable to the determination of binding constants of drugs to serum albumin without prior separation. Moreover, the validity of the proposed method was confirmed.
Collapse
Affiliation(s)
- Ahmed A Omran
- Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut, Egypt.
| | | | | |
Collapse
|
7
|
High-throughput microplate assay for the determination of drug partition coefficients. Nat Protoc 2010; 5:1823-30. [DOI: 10.1038/nprot.2010.137] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
8
|
Manuel M, Martins J. Partitioning of 1-pyrenesulfonate into zwitterionic and mixed zwitterionic/anionic fluid phospholipid bilayers. Chem Phys Lipids 2008; 154:79-86. [DOI: 10.1016/j.chemphyslip.2008.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Revised: 04/23/2008] [Accepted: 04/25/2008] [Indexed: 11/28/2022]
|
9
|
General approach for the calculation of tissue to plasma partition coefficients. Toxicol In Vitro 2007; 22:457-67. [PMID: 17981004 DOI: 10.1016/j.tiv.2007.09.010] [Citation(s) in RCA: 238] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2007] [Revised: 09/18/2007] [Accepted: 09/19/2007] [Indexed: 11/22/2022]
Abstract
A new mechanistic, universal model for the calculation of steady state tissue:plasma partition coefficients (Kt:p) of organic chemicals in mammalian species was developed. The approach allows the estimation of Kt:p-values based on the composition of the tissues in terms of water, neutral lipids, neutral and acidic phospholipids and proteins using the lipophilicity, the binding to phospholipid membranes, the pKa and the unbound fraction in blood plasma as compound specific parameters. Taking explicitly into account the sign and fraction of the charge of the compounds at the physiological pH the method is universally applicable to neutral, acidic, basic or multiply charged substances and has thus a significantly extended applicability compared to previously published approaches. The model was applied to 59 chemically diverse drug compounds for which tissue:plasma partition coefficients are reported in the literature. In total 474 experimentally observed Kt:p values for 12 tissues and the red blood cells were available and could be compared to model results. For 73% of the calculated values a deviation less than 3-fold from the respective observed value was found, proving the validity of the approach.
Collapse
|
10
|
KITAMURA K. Derivative Spectrophotometric and NMR Spectroscopic Study in Pharmaceutical Science. YAKUGAKU ZASSHI 2007; 127:1621-42. [DOI: 10.1248/yakushi.127.1621] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
11
|
Takegami S, Kitamura K, Kitade T, Takashima M, Ito M, Nakagawa E, Sone M, Sumitani R, Yasuda Y. Effects of phosphatidylserine and phosphatidylethanolamine content on partitioning of triflupromazine and chlorpromazine between phosphatidylcholine-aminophospholipid bilayer vesicles and water studied by second-derivative spectrophotometry. Chem Pharm Bull (Tokyo) 2005; 53:147-50. [PMID: 15635254 DOI: 10.1248/cpb.53.147] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To assess the affinity of psychotropic phenothiazine drugs, triflupromazine (TFZ) and chlorpromazine (CPZ), for the membranes of central nervous system and the other organs in the body, the partition coefficients (Kps) of these drugs to phosphatidylcholine (PC)-phosphatidylserine (PS) and PC-phosphatidylethanolamine (PE) small and large unilamellar vesicles (SUV, LUV) were examined by a second-derivative spectrophotometric method, since PS is abundantly contained in the membranes of the central nervous system and PE is distributed widely in the membranes of the organs in the body. Size and preparation methods of the vesicles did not affect the Kp values at each aminophospholipid content suggesting that the partition of the phenothiazine drugs was not affected by the structural differences in the vesicles such as their curvature or asymmetric distribution of the phospholipids between the outer and inner layers of the bilayer membranes. However, the Kp values of both drugs increased remarkably according to the PS content in the bilayer membranes, i.e., the Kp values for the vesicles of 30 mol% PS content were about 3 times of that for the vesicles of PC alone, while both Kp values slightly reduced with the increase in the content of PE in the bilayer membranes of PC-PE vesicles. The results indicate that both drugs have higher affinity for the PC-PS bilayer membranes than for the PC and PC-PE membranes, which can offer an evidence for the fact that TFZ and CPZ are predominantly distributed and accumulated in the brain and nerve cell membranes that contain PS abundantly.
Collapse
|
12
|
El-Sayed AAY, El-Salem NA. Recent Developments of Derivative Spectrophotometry and Their Analytical Applications. ANAL SCI 2005; 21:595-614. [PMID: 15984192 DOI: 10.2116/analsci.21.595] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Articles about the development of derivative spectrophotometric methods and analytical applications of derivative spectrophotometry (DS) published in the last nine years (since 1994) are reviewed.
Collapse
Affiliation(s)
- Abdel-Aziz Y El-Sayed
- Department of Chemistry, Faculty of Science, Al-Azhar University (Assiut Branch), Assiut, Egypt.
| | | |
Collapse
|
13
|
Carrozzino JM, Khaledi MG. Interaction of Basic Drugs with Lipid Bilayers Using Liposome Electrokinetic Chromatography. Pharm Res 2004; 21:2327-35. [PMID: 15648265 DOI: 10.1007/s11095-004-7685-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE This study explores factors influencing the interactions of positively charged drugs with liposomes using liposome electrokinetic chromatography (LEKC) for the development of LEKC as a rapid screening method for drug-membrane interactions. METHODS Liposomes were prepared and the retention factors were measured for a series of basic drugs under a variety of buffer conditions, including various buffer types, concentrations, and ionic strengths as well as using different phospholipids and liposome compositions. LEKC retention is compared with octanol-water partitioning. RESULTS The interaction of ionizable solutes with liposomes decreased with increasing ionic strength of the aqueous buffer. The type of buffer also influences positively charged drug partitioning into liposomes. Varying the surface charge on the liposomes by the selection of phospholipids influences the electrostatic interactions, causing an increase in retention with increasing percentages of anionic lipids in the membrane. Poor correlations are observed between LEKC retention and octanol-water partitioning. CONCLUSIONS These studies demonstrate the overall buffer ionic strength at a given pH is more important than buffer type and concentration. The interaction of positively charged drugs with charged lipid bilayer membranes is selectively influenced by the pKa of the drug. Liposomes are more biologically relevant in vitro models for cell membranes than octanol, and LEKC provides a unique combination of advantages for rapid screening of drug-membrane interactions.
Collapse
Affiliation(s)
- Jennifer M Carrozzino
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
| | | |
Collapse
|