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Poddar S, Woolfork AG, Iftekhar S, Ovbude ST, Hage DS. Characterization of binding by sulfonylureas with normal or modified human serum albumin using affinity microcolumns prepared by entrapment. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1226:123798. [PMID: 37331054 PMCID: PMC10529298 DOI: 10.1016/j.jchromb.2023.123798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/20/2023]
Abstract
Modification of proteins can occur during diabetes due to the formation of advanced glycation end-products (AGEs) with reactive dicarbonyls such as glyoxal (Go) and methylglyoxal (MGo). Human serum albumin (HSA) is a serum protein that binds to many drugs in blood and that is known to be modified by Go and MGo. This study examined the binding of various sulfonylurea drugs with these modified forms of HSA by using high-performance affinity microcolumns prepared by non-covalent protein entrapment. Zonal elution experiments were employed to compare the retention and overall binding constants for the drugs with Go- or MGo-modified HSA vs normal HSA. The results were compared to values from the literature, such as measured or estimated using affinity columns containing covalently immobilized HSA or biospecifically-adsorbed HSA. The entrapment-based approach provided estimates of global affinity constants within 3-5 min for most of the tested drugs and with typical precisions of ±10-23%. Each entrapped protein microcolumn was stable for over at least 60-70 injections and one month of use. The results obtained with normal HSA agreed at the 95% confidence level with global affinity constants that have been reported for the given drugs in the literature. It was found for HSA that had been modified with clinically-relevant levels of either Go or MGo that an increase in the global affinity constant of up to 2.1-fold occurred for some of the tested drugs. The information acquired in this study can be used in the future to adapt this entrapment-based approach to study and evaluate interactions between other types of drugs and normal or modified binding agents for clinical testing and biomedical research.
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Affiliation(s)
- Saumen Poddar
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Ashley G Woolfork
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Sazia Iftekhar
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Susan T Ovbude
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - David S Hage
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA.
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Sulfometuron-methyl binding to human serum albumin: Evidence that sulfometuron-methyl binds at the Sudlow’s site I. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.01.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Seedher N, Kanojia M. Reversible binding of antidiabetic drugs, repaglinide and gliclazide, with human serum albumin. Chem Biol Drug Des 2009; 72:290-6. [PMID: 18844675 DOI: 10.1111/j.1747-0285.2008.00704.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Mechanism of interaction of antidiabetic drugs, repaglinide and gliclazide, to human serum albumin has been studied using fluorescence spectroscopic technique. Repaglinide had much higher affinity for human serum albumin when compared with gliclazide. The order of association constants was 10(5) for both the drugs. The size, hydrophobicity and flexibility of the drug molecules play a major role in explaining the binding behaviour of these drugs. Hydrophobic interactions are predominantly involved in the binding. However, drugs do not share common sites with 1-anilinonaphthalene-8-sulphonate on the human serum albumin molecule. Both tyrosine and tryptophan residues participate in the interaction. Repaglinide and gliclazide are bound to site II on the human serum albumin molecule, and the aromatic ring of 411Tyr appears to be involved in binding within site II. Although they do not bind at site I, their binding at site II may cause conformational changes thereby affecting the binding of other ligands to site I. Site-specificity can be useful in predicting the competitive displacement of these drugs by other co-administered drugs, resulting in fluctuations of the blood glucose levels in diabetic patients. Stern-Volmer analysis of quenching data indicated that the tryptophan residues are not fully accessible to the drugs and predominantly dynamic quenching mechanism is involved in the binding.
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Affiliation(s)
- Neelam Seedher
- Department of Chemistry, Panjab University, Chandigarh 160014, India
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Drug-Biomacromolecule Interaction XII: Comparative binding study of sulfaethidole to bovine serum albumin by equilibrium dialysis, fluorescence probe technique, uv difference spectrophotometry and circular dichroism. Arch Pharm Res 1989. [DOI: 10.1007/bf02855548] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Baker DE, Campbell RK. The second generation sulfonylureas: glipizide and glyburide. DIABETES EDUCATOR 1985; 11:29-36. [PMID: 3935402 DOI: 10.1177/014572178501100305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Glyburide and glipizide are approved by the FDA for treatment of symptomatic and asymp tomatic NIDDM patients in whom hyperglycemia cannot be satisfactorily controlled by diet and exercise. Pharmacology studies suggest that glyburide and glipizide sensitize the beta cells of the pancreas to release insulin only in the presence of elevated serum glucose levels. Long-term efficacy appears to depend on extrapancreatic effects, suppressing hepatic glucose production, and improved postreceptor insulin activity.
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Kobayashi K, Kimura M, Sakoguchi T, Hase A, Matsuoka A, Kaneko S. Pharmacokinetics of gliclazide in healthy and diabetic subjects. J Pharm Sci 1984; 73:1684-7. [PMID: 6396398 DOI: 10.1002/jps.2600731204] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The pharmacokinetics of total and free gliclazide, 1-(3-azabicyclo[3,3,0]oct-3-yl)-3-(p-tolylsulfonyl)urea, a potential hypoglycemic drug, was studied in healthy (n = 12) and diabetic (n = 12) subjects. The serum level of gliclazide was determined by a high-performance liquid chromatographic method (HPLC). The free fraction of gliclazide was obtained from serum by an ultrafiltration technique using a collodion membrane. The mean adsorption of gliclazide to the membrane was approximately 50% when the membrane was used more than twice. Therefore, the gliclazide level in the filtrate was corrected by doubling the apparent value. The ratio of gliclazide-protein binding remained constant at approximately 92% in serum after administration to healthy and diabetic subjects. The mean pharmacokinetic parameters of elimination rate (ke), time to reach the peak level (tmax), elimination half-life (t 1/2), and volume of distribution (Vd) were 0.07 h-1, 2.8 h, 12.3 h, and 17.4 L, respectively. The parameters did not differ significantly between healthy and diabetic subjects or between single and successive administrations; moreover, they did not differ between the free and total drug level. Although there were intersubject variations, the therapeutic effects of oral administration of gliclazide on serum glucose and insulin levels were found in four diabetic patients. The results of this study show that the pharmacokinetics of the total gliclazide level reflect those of the free gliclazide in serum.
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Brunner F, Zini R, Tillement JP. Dependence of drug-protein binding parameters on human serum and albumin concentration. J Pharm Pharmacol 1983; 35:526-8. [PMID: 6137542 DOI: 10.1111/j.2042-7158.1983.tb04826.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Sparrow NA, Russell AE, Glasser L. An automated continuous-flow dynamic dialysis technique for investigating protein-ligand binding. Anal Biochem 1982; 123:255-64. [PMID: 7125201 DOI: 10.1016/0003-2697(82)90443-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Nouravarsani F, Cobby J. Measurement of protein binding for drugs that are unstable in aqueous solution. Int J Pharm 1982. [DOI: 10.1016/0378-5173(82)90177-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Verbeeck RK, Boel A, Buntinx A, De Schepper PJ. Plasma protein binding and interaction studies with diflunisal, a new salicylate analgesic. Biochem Pharmacol 1980; 29:571-6. [PMID: 7370051 DOI: 10.1016/0006-2952(80)90378-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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12
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Miller SC. A computer program for the direct analysis of protein binding data obtained from dynamic dialysis. COMPUTERS AND BIOMEDICAL RESEARCH, AN INTERNATIONAL JOURNAL 1980; 13:52-60. [PMID: 7357857 DOI: 10.1016/0010-4809(80)90005-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Wosilait WD, Ryan MP. Multiple competitive displacement interactions involving human serum albumin, anticoagulants, oleic acid and various drugs. GENERAL PHARMACOLOGY 1980; 11:387-94. [PMID: 6156878 DOI: 10.1016/0306-3623(80)90104-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Veronich K, White G, Kapoor A. Effects of phenylbutazone, tolbutamide, and clofibric acid on binding of racemic warfarin and its enantiomers to human serum albumin. J Pharm Sci 1979; 68:1515-8. [PMID: 529041 DOI: 10.1002/jps.2600681213] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The effect of phenylbutazone, tolbutamide, and clofibric acid on the binding of racemic warfarin and its enantiomers to human serum albumin was studied by equilibrium dialysis. Warfarin had one primary and two secondary binding sites on the albumin molecule. No difference in binding was detected at the primary binding site; the extent of R(+)-isomer binding at the secondary binding sites was 2.5 times greater than the corresponding S(-)-isomer binding. Phenylbutazone and warfarin appear to compete for the same primary binding site on the albumin molecule. Tolbutamide interferes with the binding of warfarin enantiomers at their secondary sites. Clofibric acid has a less pronounced effect on warfarin binding than does phenylbutazone or tolbutamide.
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Whitlam JB, Crooks MJ, Brown KF, Pedersen PV. Binding of nonsteroidal anti-inflammatory agents to proteins--I. Ibuprofen-serum albumin interaction. Biochem Pharmacol 1979; 28:675-8. [PMID: 571721 DOI: 10.1016/0006-2952(79)90154-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Pedersen PV. General treatment of competitive binding of small molecules to macromolecules as applied to dynamic dialysis: theoretical analysis. J Pharm Sci 1978; 67:908-13. [PMID: 660505 DOI: 10.1002/jps.2600670709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A mathematical analysis of the dynamic dialysis process is presented, demonstrating how the process can be applied generally to study competitive and noncompetitive binding between small molecules and macromolecules. A law of mass action model for competitive binding with independent sites and classes with equivalent sites (CIE) is considered as a specific case without loss of generality. The escape profiles of two compounds are calculated to illustrate the effect of an increasing degree of binding competition. Noisy data are generated using the CIE model to test the presented method of estimating competitive binding parameters. The parameters estimated by the nonlinear regression technique came close to the true values, considering the degree of noise added to the exact dialysis data. A transformation approach is presented, enabling initial estimates of the binding parameters in the CIE model to be determined by multiple linear regression, thereby eliminating the main problem in the nonlinear estimation. The presented method of analysis is extended to strongly bound compounds, which also bind significantly to the dialysis membrane.
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Pedersen PV, Crooks MJ, Brown KF. Method of obtaining drug-macromolecule binding parameters directly from dynamic dialysis data. J Pharm Sci 1977; 66:1458-61. [PMID: 925903 DOI: 10.1002/jps.2600661028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new method of treating dynamic dialysis data to obtain binding parameters for drug-macromolecule interactions is presented. This method allows the determination of binding parameters directly from dialysis data according to a theoretical model. It is not necessary to determine the dialysis rate constant accurately in a separate experiment, and bias is not introduced due to differentiation. The proposed method should be applicable where the drug is substantially bound to the dialysis membrane.
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Thiessen JJ, Sellers EM, Denbeigh P, Dolman L. Plasma protein binding of diazepam and tolbutamide in chronic alcoholics. J Clin Pharmacol 1976; 16:345-51. [PMID: 947967 DOI: 10.1002/j.1552-4604.1976.tb01531.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The increased incidence of drowsiness in hypoalbuminemic patients administered diazepam and more rapid clearance of tolbutamide in cirrhotics may be due to changes in plasma protein binding. The binding of diazepam and tolbutamide was studied by equilibrium dialysis at 37degreesC over a total drug concentration range of 1 to 10 mug/ml and 50 to 300 mug/ml, respectively, in plasma from 21 normal and 14 alcoholic subjects. At 1 mug/ml, diazepam plasma protein binding (+/- S.D.) was 98.5+/-0.4 per cent in normals and 97.8+/-1.2 per cent in alcoholics; at 100 mug/ml, tolbutamide binding was 97.8+/-0.3 per cent in normals and 95.1+/-4.2 per cent in alcoholics. For both agents at all concentrations, the binding to plasma from alcoholics was significantly decreased (P less than 0.01-less than 0.02). The extent of binding of both drugs was dependent on the albumin concentration. These findings suggest that important changes in pharmacologic effect, distribution, and clearance of diazepam and tolbutamide can be anticipated in alcoholics with hypoalbuminemia.
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Zini R, d'Athis P, Hoareau A, Tillement JP. Binding of four sulphonamides to human albumin. Eur J Clin Pharmacol 1976; 10:139-45. [PMID: 964290 DOI: 10.1007/bf00609473] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The four sulphonamides studied--furosemide, tolbutamide, sulfafurazole and sulfonamidochlorobenzoic acid--bind to human albumin at the same sites but with decreasing affinity. These sites are also common to other drugs, namely acenocoumarin, chlorophenoxyisobutyric acid, phenylbutazone and warfarin. In plasma, the four sulphonamides considered bind mainly to albumin, but also, at higher concentrations, to globulins, to an extent that increases as their affinity for albumin lessens.
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Brown KF, Crooks MJ. Displacement of tolbutamide, glibencalmide and chlorpropamide from serum albumin by anionic drugs. Biochem Pharmacol 1976; 25:1175-8. [PMID: 820348 DOI: 10.1016/0006-2952(76)90365-8] [Citation(s) in RCA: 83] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Abstract
The binding of salicylic acid and sulfathiazole to bovine whole blood, plasma proteins, and purified albumin fraction was investigated using a dynamic dialysis system. The binding profiles for salicylic acid were quite similar in bovine plasma and 4% bovine serum albumin. In contrast, the binding of sulfathiazole was significantly greater in the plasma than in solutions of fraction V bovine serum albumin. Data from dynamic dialysis binding studies of the compounds, conducted in whole blood and suspended erythrocyte systems, did not lend themselves to analysis by classical methods. Hemolysis and alteration in the nature of the protein binding sites during the binding studies were shown to be factors that could explain the unusual binding observed in the whole blood system.
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Kanfer I, Cooper DR. The use of empirical equations to describe dynamic dialysis "escape curves" in drug-macromolecule binding measurements. J Pharm Pharmacol 1976; 28:58-60. [PMID: 6652 DOI: 10.1111/j.2042-7158.1976.tb04024.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Henry RA, Wosilait WD. Drug displacement of warfarin from human serum albumin: a fluorometric analysis. Toxicol Appl Pharmacol 1975; 33:267-75. [PMID: 1237182 DOI: 10.1016/0041-008x(75)90093-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Zia H, Price JC. Binding study of sulfonylureas and phenothiazines to bovine serum albumin using difference spectrophotometry. J Pharm Sci 1975; 64:1177-81. [PMID: 1171217 DOI: 10.1002/jps.2600640710] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
2-(4'-Hydroxybenzeneazo)benzoic acid is a spectrophotometric probe which shows absorption spectrum changes upon binding to protein. Difference absorption spectra of this probe were used as an indirect measurement of the binding of selected sulfonylurea and phenothiazine drugs to bovine serum albumin. The results obtained using the spectrophotometric probe were similar to data obtained from other methods, especially fluorescent methods. Of the four sulfonylureas studied, tolbutamide showed the highest binding affinity, followed by glyburide, glipizide, and acetohexamide, in that order. The data collected for phenothiazine drugs indicated that chlorpromazine has the highest affinity, followed in order by trifluoperazine, perphenazine, fluphenazine, and promazine. Correlation of these results with chemical composition indicated that the interaction of phenothiazine drugs with bovine serum albumin was of a hydrophobic nature.
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Shen D, Gibaldi M. Critical evaluation of use of effective protein fractions in developing pharmacokinetic models for drug distribution. J Pharm Sci 1974; 63:1698-703. [PMID: 4372337 DOI: 10.1002/jps.2600631106] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Hinderling PH, Bres J, Garrett ER. Protein binding and erythrocyte partitioning of disopyramide and its monodealkylated metabolite. J Pharm Sci 1974; 63:1684-90. [PMID: 4427225 DOI: 10.1002/jps.2600631103] [Citation(s) in RCA: 82] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Abstract
Abstract
The interaction of tolbutamide, glibenclamide, chlorpropamide and tolazamide with serum albumin has been examined. Glibenclamide, the most strongly bound of the four compounds, is bound to only one class of sites. The other three compounds are bound to at least two. The interaction between glibenclamide and albumin was independent of pH and increased markedly with decreasing temperature suggesting that a non-ionic mechanism is involved. In contrast, the overall interaction of tolbutamide with albumin showed little temperature dependence and, in addition, binding of both tolbutamide and chlorpropamide decreased with pH. These findings imply that the predominantly bound species is the anion. Binding parameters corrected for electrostatic effects were found to fit binding data for tolbutamide, chlorpropamide and tolazamide better than uncorrected parameters. Electrostatic correction of binding of glibenclamide is unnecessary.
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