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Insights into the binding mechanism of a model protein with fomesafen: Spectroscopic studies, thermodynamics and molecular modeling exploration. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.128] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Zolfagharzadeh M, Pirouzi M, Asoodeh A, Saberi MR, Chamani J. A comparison investigation of DNP-binding effects to HSA and HTF by spectroscopic and molecular modeling techniques. J Biomol Struct Dyn 2013; 32:1936-52. [DOI: 10.1080/07391102.2013.843062] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Omidvar Z, Parivar K, Sanee H, Amiri-Tehranizadeh Z, Baratian A, Saberi MR, Asoodeh A, Chamani J. Investigations with Spectroscopy, Zeta Potential and Molecular Modeling of the Non-Cooperative Behaviour Between Cyclophosphamide Hydrochloride and Aspirin upon Interaction with Human Serum Albumin: Binary and Ternary Systems from the View Point of Multi-Drug Therapy. J Biomol Struct Dyn 2011; 29:181-206. [DOI: 10.1080/07391102.2011.10507382] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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4
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Literature Alerts. J Microencapsul 2008. [DOI: 10.3109/02652048409049366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Cocquyt J, Saveyn P, Van der Meeren P, De Cuyper M. Evaluation of the interaction of propranolol with 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) liposomes: the partitioning model. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:1959-64. [PMID: 17279681 DOI: 10.1021/la062139e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The sorption behavior of the amine containing beta-receptor blocking agent propranolol (Ppn) in 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) vesicles was investigated. Both protonated and unprotonated Ppn were measured in the continuous phase after removal of the vesicles containing sorbed Ppn by centrifugation. In contrast, by analyzing the surface charge density, deduced from electrophoretic mobility measurements, only the sorbed protonated Ppn was determined. A partitioning model was used to describe the sorption behavior. Sensitivity analysis revealed that sufficiently reliable and independent parameters were obtained. The partition coefficient of the unprotonated Ppn was about 22 times higher than that of the protonated analogue. Statistical analysis revealed a significant increase in the intrinsic partition coefficients of both Ppn analogues with an increase in the salt concentration.
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Affiliation(s)
- Jan Cocquyt
- Particle and Interfacial Technology Group, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
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Matsuki H, Kaneshina S, Kamaya H, Ueda I. Partitioning of Charged Local Anesthetics into Model Membranes Formed by Cationic Surfactant: Effect of Hydrophobicity of Local Anesthetic Molecules. J Phys Chem B 1998. [DOI: 10.1021/jp9804190] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hitoshi Matsuki
- Department of Anesthesia, Department of Veterans Administration Medical Center, and University of Utah School of Medicine, Salt Lake City, Utah 84148, and Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Minamijosanjima, Tokushima 770, Japan
| | - Shoji Kaneshina
- Department of Anesthesia, Department of Veterans Administration Medical Center, and University of Utah School of Medicine, Salt Lake City, Utah 84148, and Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Minamijosanjima, Tokushima 770, Japan
| | - Hiroshi Kamaya
- Department of Anesthesia, Department of Veterans Administration Medical Center, and University of Utah School of Medicine, Salt Lake City, Utah 84148, and Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Minamijosanjima, Tokushima 770, Japan
| | - Issaku Ueda
- Department of Anesthesia, Department of Veterans Administration Medical Center, and University of Utah School of Medicine, Salt Lake City, Utah 84148, and Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Minamijosanjima, Tokushima 770, Japan
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Encapsulation of lidocaine base and hydrochloride into non-ionic surfactant vesicles (NSVs) and diffusion through human stratum corneum in vitro. Eur J Pharm Sci 1996. [DOI: 10.1016/0928-0987(95)00043-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Betageri G, Parsons D. Drug encapsulation and release from multilamellar and unilamellar liposomes. Int J Pharm 1992. [DOI: 10.1016/0378-5173(92)90015-t] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Pedroso de Lima MC, Chiche BH, Debs RJ, Düzgüneş N. Interaction of antimycobacterial and anti-pneumocystis drugs with phospholipid membranes. Chem Phys Lipids 1990; 53:361-71. [PMID: 2160335 DOI: 10.1016/0009-3084(90)90034-o] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Liposomes can be used as carriers of drugs in the treatment of viral, bacterial and protozoal infections. The potential for liposome-mediated therapy of Mycobacterium avium-intracellulare complex infections, one of the most common opportunistic infections in AIDS, is currently under study. Here, we have investigated the effect of the lipid-soluble antimycobacterial drugs ansamycin, clofazimine and CGP7040 on the thermotropic behavior of liposomes composed of dipalmitoylphosphatidylcholine (DPPC) or dipalmitoylphosphatidylglycerol (DPPG) using differential scanning calorimetry (DSC). In the presence of ansamycin (rifabutine), the peak gel-liquid crystalline phase transition temperature (Tm) of DPPG was reduced, as was the sub-transition temperature (Ts), whereas the Tm of DPPC was reduced only slightly. The temperature of the pre-transition (Tp) of DPPC was lowered, while the pre-transition of DPPG was abolished. Ansamycin also caused the broadening of the transition endotherm of both lipids. Equilibration of the drug/lipid complex for 1 or 5 days produced different thermotropic behavior. In the presence of clofazimine, the cooperativity of the phase transition of DPPG decreased. Above 10 mol% clofazimine formed two complexes with DPPG, as indicated by two distinguishable peaks in DSC thermograms. The Tm of both peaks were lowered as the mole fraction increased. Clofazimine had minimal interaction with DPPC. In contrast, CGP7040 interacted more effectively with DPPC than with DPPG, causing a reduction of the size of the cooperative unit of DPPC even at 2 mol%. The main transition of DPPC split into 3 peaks at 5 mol% drug. The pre-transition was abolished at all drug concentrations and the sub-transition disappeared at 10 mol% CGP7040. These studies suggest that maximal encapsulation of clofazimine in liposomes would require a highly negatively charged membrane, while that of CGP7040 would necessitate a zwitterionic membrane. We have also investigated the interaction of the water-soluble antibiotic pentamidine, which has been used against Pneumocystis carinii, the most lethal of AIDS-related opportunistic pathogens. Aerosol administration of this drug leads to long-term sequestration of the drug in the lungs. The DPPG/pentamidine complex exhibited a pre-transition at 3.5 degrees C, an endothermic peak at 42 degrees C, and an exothermic peak at 44.5 degrees C, followed by another endothermic peak at 55 degrees C. The exotherm depended on the history of the sample, requiring pre-incubation for several minutes below the 42 degrees C transition. These observations suggest that upon melting of the DPPG chains at 42 degrees C, the DPPG crystallizes as a DPPG/pentamidine complex that melts at 55 degrees C.
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Affiliation(s)
- M C Pedroso de Lima
- Cancer Research Institute, University of California, San Francisco 94143-0128
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Deuticke B, Grebe R, Haest CWM. Action of Drugs on the Erythrocyte Membrane. BLOOD CELL BIOCHEMISTRY 1990. [DOI: 10.1007/978-1-4757-9528-8_16] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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11
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Haab J, Roth HJ. [Liposomes as drug carriers for cinchona alkaloids and as a model for the interaction of cinchona alkaloids with erythrocytes]. Arch Pharm (Weinheim) 1988; 321:451-5. [PMID: 3223803 DOI: 10.1002/ardp.19883210805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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Schweikert L, Roth HJ. Liposomale Membranen unterschiedlicher Ladung als Diffusionsbarriere für aromatisch substituierte α-Aminoalkohole. Arch Pharm (Weinheim) 1988. [DOI: 10.1002/ardp.19883211004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kuroda Y, Fujiwara Y. Locations and dynamical perturbations for lipids of cationic forms of procaine, tetracaine, and dibucaine in small unilamellar phosphatidylcholine vesicles as studied by nuclear Overhauser effects in 1H nuclear magnetic resonance spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA 1987; 903:395-410. [PMID: 3663653 DOI: 10.1016/0005-2736(87)90046-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Locations and dynamical perturbations for lipids of local anesthetics (procaine . HCl, tetracaine . HCl, and dibucaine . HCl) in sonicated egg yolk phosphatidylcholine (PC) vesicles have been studied by 1H-1H nuclear Overhauser effect (NOE) measurements. It was found that tetracaine and dibucaine bind much strongly to the neutral lipids than does procaine and that their mobilities are lowered to such an extent that spin diffusion is transmitted (i.e., omega 2 tau c2 much greater than 1). The intermolecular NOEs between drugs and PC were more effective in the case of dibucaine than with tetracaine, indicating that dibucaine binds to the lipids more strongly than tetracaine; this order agrees well with that of anesthetic potency. However, it was only tetracaine that gave any appreciable dynamical perturbation to the PC vesicles when they were monitored by the extent of transfer of the negative NOE from alpha-methylene protons to choline methyls, olefinic methines, acyl methylenes and terminal methyl protons. This finding was interpreted as being due to the differences in the locations of these drugs in small unilamellar vesicles: (1) procaine interacts with lipids very weakly at the outer surface of the vesicles; (2) tetracaine binds to the lipids both at the outer and inner halves of the bilayer, inserting its rod-like molecule in a forest of acyl chains of PC; (3) dibucaine binds tightly to the polar head-group of PC, which resides only at the outer half of the bilayer vesicles. It was concluded that the relative order of anesthetic potency within these drugs can be correlated not with the ability to affect membrane fluidity but with the ability to bind to lipids at the polar head-group of the bilayer vesicles.
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Affiliation(s)
- Y Kuroda
- Faculty of Pharmaceutical Sciences, Kyoto University, Japan
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Plewig G, Steiner R, Ledolter A. Electrophoretic mobility of corneocytes measured by laser Doppler spectroscopy. Arch Dermatol Res 1987; 279 Suppl:S97-103. [PMID: 2959213 DOI: 10.1007/bf00585930] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A new approach studying the characteristics of the stratum corneum is presented: the electrophoretic mobility of corneocytes by laser Doppler spectroscopy. The detergent scrub technique was used for harvesting corneocytes from three body regions (forehead, palm, and sole) of normal persons (n = 20) under casual conditions and after thorough defattening of the skin with 70% isopropyl alcohol or petrol. Similarly, cells from the forehead, shoulder, and palm were obtained from 22 acne patients treated with isotretinoin (13-cis retinoic acid) 0.5-0.7 mg/kg body weight (b.wt.)/day for 12-16 weeks, and in patients receiving arotinoid (Ro 15-0778) 192 mg (n = 5) or 500 mg (n = 5) per kg/b.wt./day for 6 weeks (forehead and shoulder). In another experiment, cell suspensions with a pH ranging from 5.0-7.3 were evaluated. Measurements were performed by dynamic laser light scattering. This laser application allows exact electrophoretic mobility measurements in a short time (3 min). When cells pass the laser beam, the scattered light is frequency-shifted due to the optical Doppler effect. These frequency shifts are analyzed by the heterodyne light beating technique. The analog signal of the photodetector is converted into a power spectrum by Fourier analysis. This power spectrum represents the spectrum of electrophoretic cell mobility distribution. Results showed different electrophoretic mobility values for corneocytes dependent on the topographic region: forehead 1.18 +/- 0.16, palm 1.10 +/- 0.14, and sole 0.83 +/- 0.10 (means +/- SEM) micron cm/Vs. Defattening with isopropyl alcohol decreased the mobility values to 0.90 +/- 0.09 (p less than or equal to 0.01), 0.95 +/- 0.10, and 0.77 +/- 0.10 micron cm/Vs respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- G Plewig
- Department of Dermatology, University of Düsseldorf, FRG
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Harder A, Debuch H. Changes of transition temperatures of phosphatidylcholine and phosphatidylglycerol in presence of amphiphilic drugs. Chem Phys Lipids 1986; 39:65-71. [PMID: 3948293 DOI: 10.1016/0009-3084(86)90100-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The transition temperature of phosphatidylglycerol (PG) was reduced to lower temperatures in presence of propranolol, imipramine, amitriptyline and chlorpromazine. This effect was dependent on drug concentration and was smallest with propranolol. The fluidizing effect, however, increased from propranolol to chlorpromazine according to the octanol/H2O partition coefficients. When the two phospholipids PG and phosphatidylcholine (PC) were compared, the presence of drug lead to a more pronounced reduction of the transition temperature in the case of the acidic phospholipid than in the case of the neutral one.
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Mayer LD, Bally MB, Hope MJ, Cullis PR. Uptake of dibucaine into large unilamellar vesicles in response to a membrane potential. J Biol Chem 1985. [DOI: 10.1016/s0021-9258(20)71169-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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