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Poór M, Dombi Á, Fliszár-Nyúl E, Pedroni L, Dellafiora L. Effects of Chrysin and Chrysin-7-sulfate on Ochratoxin A-Albumin Interactions and on the Plasma and Kidney Levels of the Mycotoxin in Rats. ACS OMEGA 2024; 9:17655-17666. [PMID: 38645364 PMCID: PMC11024961 DOI: 10.1021/acsomega.4c01738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/20/2024] [Accepted: 03/25/2024] [Indexed: 04/23/2024]
Abstract
The nephrotoxic mycotoxin ochratoxin A (OTA) is a common food contaminant. OTA binds to the Sudlow's Site I region of serum albumin with very high affinity, resulting in its slow elimination. The displacement of OTA from albumin may be beneficial due to the faster excretion of the mycotoxin, while it may also lead to the increased tissue uptake of OTA. Furthermore, it is challenging to displace the mycotoxin from albumin even with high-affinity Site I ligands. In this study, we tested the impacts of Site I and Heme site ligands on OTA-albumin interactions by applying fluorescence spectroscopic, ultracentrifugation, and modeling studies. Chrysin-7-sulfate (C7S) strongly displaced OTA from both human and rat albumins; therefore, the impacts of C7S (single intravenous administration) and the parent flavonoid chrysin (repeated peroral treatment) were examined on the plasma and kidney levels of OTA in rats. Chrysin barely influenced the concentrations of mycotoxin in plasma and kidneys. In the first few hours, C7S significantly decreased the plasma levels of OTA compared to the control animals; while after 24 h, only minor differences were noticed. Our study highlights the superior displacing ability of C7S vs OTA regarding human and rat albumins.
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Affiliation(s)
- Miklós Poór
- Department
of Laboratory Medicine, Medical School, University of Pécs, Ifjúság útja 13, Pécs H-7624, Hungary
- Molecular
Medicine Research Group, János Szentágothai Research
Centre, University of Pécs, Ifjúság útja
20, Pécs H-7624, Hungary
- Department
of Pharmacology, Faculty of Pharmacy, University
of Pécs, Rókus u. 2, Pécs H-7624, Hungary
| | - Ágnes Dombi
- Department
of Pharmacology, Faculty of Pharmacy, University
of Pécs, Rókus u. 2, Pécs H-7624, Hungary
| | - Eszter Fliszár-Nyúl
- Department
of Pharmacology, Faculty of Pharmacy, University
of Pécs, Rókus u. 2, Pécs H-7624, Hungary
| | - Lorenzo Pedroni
- Department
of Food and Drug, University of Parma, Via G.P. Usberti 27/A, Parma 43124, Italy
| | - Luca Dellafiora
- Department
of Food and Drug, University of Parma, Via G.P. Usberti 27/A, Parma 43124, Italy
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2
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Sookai S, Akerman MP, Munro OQ. Chiral Au(III) chelates exhibit unique NCI-60 cytotoxicity profiles and interactions with human serum albumin. Dalton Trans 2024; 53:5089-5104. [PMID: 38375922 DOI: 10.1039/d3dt04024k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Au(III) bis(pyrrolide-imine) chelates are emerging as a class of versatile, efficacious metallodrug candidates. Here, we synthesised two enantiopure chiral ligands H2L1 and H2L2 (tetradentate cyclohexane-1,2-diamine-bridged bis(pyrrole-imine) derivatives). Metallation of the ligands with Au(III) afforded the chiral cationic complexes AuL1 and AuL2. The in vitro cytotoxicities of AuL1 and AuL2 determined in the NCI-60 single-dose drug screen were 56.5% and 89.1%, respectively. AuL1 was subsequently selected for a five-dose NCI-60 screen, attaining GI50, IC50, and LC50 values of 4.7, 9.3 and 39.8 μM, respectively. Hierarchical cluster analysis of the NCI-60 data indicated that the profile for AuL1 was similar to that of vinblastine sulfate, a microtubule-targeting vinca alkaloid. Reactions of AuL1 with glutathione (GSH) in vitro confirmed its susceptibility to reduction, Au(III) → Au(I), by intracellular thiols. Because human serum albumin (HSA) is responsible for transporting clinically deployed and investigational drugs, we studied the uptake of AuL1 and AuL2 by HSA to delineate how chirality impacts their protein-binding affinity. Steady-state fluorescence quenching data acquired on the native protein and data from site-specific probes showed that the compounds bind at sites close enough to Trp-214 (subdomain IIA) of HSA to quench the fluorophore. The bimolecular quenching rate constants, Kq, were ca. 102 times higher than the maximum diffusion-controlled collision constant of a biomolecule in water (1010 M-1 s-1), confirming that static fluorescence quenching was the dominant mechanism. The Stern-Volmer constants, KSV, were ∼104 M-1 at 37 °C, while the affinity constants, Ka (37 °C), measured ∼2.1 × 104 M-1 (AuL1) and ∼1.2 × 104 M-1 (AuL2) for enthalpy-driven ligand uptake targeting Sudlow's site I. Although far- and near-UV CD spectroscopy indicated that both complexes minimally perturb the secondary and tertiary structure of HSA, substantial shifts in the CD spectra were recorded for both protein-bound ligands. This study highlights the role of chirality in determining the cytotoxicity profiles and protein binding behaviour of enantiomeric Au(III) chelates.
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Affiliation(s)
- Sheldon Sookai
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO WITS 2050, Johannesburg, South Africa.
| | - Matthew P Akerman
- School of Chemistry and Physics, University of KwaZulu-Natal, Pietermaritzburg, 3201, South Africa
| | - Orde Q Munro
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO WITS 2050, Johannesburg, South Africa.
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
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3
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Alexander N, McDonald L, Wesdemiotis C, Pang Y. Native mass spectrometry analysis of conjugated HSA and BSA complexes with various flavonoids. Analyst 2024; 149:1929-1938. [PMID: 38376111 PMCID: PMC10926777 DOI: 10.1039/d3an02070c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 01/10/2024] [Indexed: 02/21/2024]
Abstract
Mass spectrometry was used to study the binding interaction between serum albumin proteins (BSA and HSA) and flavone dyes, which is known to induce large fluorescence signals for protein detection. By electrospray ionization mass spectrometry (ESI-MS), multiple charged species/states could be produced in ammonium acetate buffer, while preserving the native structures of the proteins. Subsequent introduction of a flavone dye into the buffered solution resulted in an immediate interaction, forming the respective protein-dye conjugates associated by non-covalent interactions. Formation of protein-dye conjugates induced a notable response in the ESI-MS spectra, including changes in both the charge states and molecular mass of the protein species. The resulting data pointed out that the protein-flavone dye maintained a 1 : 1 ratio in the conjugate, although multiple binding sites for drug molecules are present in albumin proteins.
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Affiliation(s)
| | - Lucas McDonald
- Department of Chemistry, The University of Akron, OH 44325, USA.
| | | | - Yi Pang
- Department of Chemistry, The University of Akron, OH 44325, USA.
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4
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Patanè GT, Lombardo L, Putaggio S, Tellone E, Ficarra S, Barreca D, Laganà G, De Luca L, Calderaro A. Anti-Aggregative and Protective Effects of Vicenin-2 on Heat and Oxidative Stress-Induced Damage on Protein Structures. Int J Mol Sci 2023; 24:17222. [PMID: 38139052 PMCID: PMC10743203 DOI: 10.3390/ijms242417222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/30/2023] [Accepted: 12/03/2023] [Indexed: 12/24/2023] Open
Abstract
Vicenin-2, a flavonoid categorized as a flavones subclass, exhibits a distinctive and uncommon C-glycosidic linkage. Emerging evidence challenges the notion that deglycosylation is not a prerequisite for the absorption of C-glycosyl flavonoid in the small intestine. Capitalizing on this experimental insight and considering its biological attributes, we conducted different assays to test the anti-aggregative and antioxidant capabilities of vicenin-2 on human serum albumin under stressful conditions. Within the concentration range of 0.1-25.0 μM, vicenin-2 effectively thwarted the heat-induced HSA fibrillation and aggregation of HSA. Furthermore, in this study, we have observed that vicenin-2 demonstrated protective effects against superoxide anion and hydroxyl radicals, but it did not provide defense against active chlorine. To elucidate the underlying mechanisms, behind this biological activity, various spectroscopy techniques were employed. UV-visible spectroscopy revealed an interaction between HSA and vicenin-2. This interaction involves the cinnamoyl system found in vicenin-2, with a peak of absorbance observed at around 338 nm. Further evidence of the interaction comes from circular dichroism spectrum, which shows that the formation of bimolecular complex causes a reduction in α-helix structures. Fluorescence and displacement investigations indicated modifications near Trp214, identifying Sudlow's site I, similarly to the primary binding site. Molecular modeling revealed that vicenin-2, in nonplanar conformation, generated hydrophobic interactions, Pi-pi stacking, and hydrogen bonds inside Sudlow's site I. These findings expand our understanding of how flavonoids bind to HSA, demonstrating the potential of the complex to counteract fibrillation and oxidative stress.
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Affiliation(s)
| | | | | | | | | | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166 Messina, Italy; (G.T.P.); (L.L.); (S.P.); (E.T.); (S.F.); (L.D.L.); (A.C.)
| | - Giuseppina Laganà
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166 Messina, Italy; (G.T.P.); (L.L.); (S.P.); (E.T.); (S.F.); (L.D.L.); (A.C.)
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5
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Spanakis M, Alon-Ellenbogen D, Ioannou P, Spernovasilis N. Antibiotics and Lipid-Modifying Agents: Potential Drug-Drug Interactions and Their Clinical Implications. PHARMACY 2023; 11:130. [PMID: 37624085 PMCID: PMC10457919 DOI: 10.3390/pharmacy11040130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/30/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023] Open
Abstract
Evidence-based prescribing requires taking into consideration the many aspects of optimal drug administration (e.g., dosage, comorbidities, co-administered drugs, etc.). A key issue is the administration of drugs for acute disorders that may potentially interfere with previously prescribed long-term medications. Initiating an antibiotic for an acute bacterial infection constitutes a common example. Hence, appropriate knowledge and awareness of the potential DDIs of antibiotics would lead to proper adjustments, thus preventing over- or under-treatment. For example, some statins, which are the most prescribed lipid-modifying agent (LMA), can lead to clinically important drug-drug interactions (DDIs) with the concurrent administration of antibiotics, e.g., macrolides. This review discusses the clinically significant DDIs of antibiotics associated with co-administrated lipid-lowering therapy and highlights common cases where regimen modifications may or may not be necessary.
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Affiliation(s)
- Marios Spanakis
- Department Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece;
- Computational Biomedicine Laboratory, Institute of Computer Science, Foundation for Research & Technology-Hellas (FORTH), 70013 Heraklion, Greece
| | - Danny Alon-Ellenbogen
- Department of Basic and Clinical Sciences, University of Nicosia Medical School, 2417 Nicosia, Cyprus;
| | - Petros Ioannou
- Department of Internal Medicine & Infectious Diseases, University Hospital of Heraklion, 71110 Heraklion, Greece;
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6
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Kanis E, Parks J, Austin DL. Structural Analysis and Protein Binding of Cephalosporins. ACS Pharmacol Transl Sci 2023; 6:88-91. [PMID: 36654755 PMCID: PMC9841772 DOI: 10.1021/acsptsci.2c00168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Indexed: 12/12/2022]
Abstract
Cephalosporins are a widely used subclass of β-lactam antibiotics that demonstrate variable protein binding independent of generation or antibiotic coverage. Prior work analyzed carbon 3 (C3) and carbon 7 (C7) substituents (locations of R2 and R1 groups respectively) for protein binding interactions. This study builds upon these results with statistical analysis of additional agents of the class. Chemical structures of 23 cephalosporins were used to identify the presence of 40 functional groups, and correlative relationships were identified using established protein binding data. Four functional groups were significantly correlated with protein binding: tetrazole (positive association), pyridinium, primary amine, and quaternary amine (negative associations). Cephalosporins with a negative charge at physiological pH were associated with increased protein binding. Analysis of tetrazole-containing cephalosporins and ceftriaxone indicates the need for further study of the potential role in protein binding of neutral or negatively charged aromatic nitrogen heterocycles linked at the C3 position by a thiomethylene group.
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Affiliation(s)
- Emily Kanis
- School of Pharmacy, Lake Erie College of Osteopathic Medicine, 1858 West Grandview Boulevard, Erie, Pennsylvania 16509, United States
| | - Jessica Parks
- School of Pharmacy, Lake Erie College of Osteopathic Medicine, 1858 West Grandview Boulevard, Erie, Pennsylvania 16509, United States
| | - Daniel L. Austin
- School of Pharmacy, Lake Erie College of Osteopathic Medicine, 1858 West Grandview Boulevard, Erie, Pennsylvania 16509, United States
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7
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Kaci H, Bodnárová S, Fliszár-Nyúl E, Lemli B, Pelantová H, Valentová K, Bakos É, Özvegy-Laczka C, Poór M. Interaction of luteolin, naringenin, and their sulfate and glucuronide conjugates with human serum albumin, cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) enzymes and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. Biomed Pharmacother 2023; 157:114078. [PMID: 36481402 DOI: 10.1016/j.biopha.2022.114078] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/28/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Luteolin and naringenin are flavonoids found in various foods/beverages and present in certain dietary supplements. After a high intake of these flavonoids, their sulfate and glucuronide conjugates reach micromolar concentrations in the bloodstream. Some pharmacokinetic interactions of luteolin and naringenin have been investigated in previous studies; however, only limited data are available in regard to their metabolites. In this study, we aimed to investigate the interactions of the sulfate and glucuronic acid conjugates of luteolin and naringenin with human serum albumin, cytochrome P450 (CYP2C9, 2C19, and 3A4) enzymes, and organic anion transporting polypeptide (OATP1B1 and OATP2B1) transporters. Our main findings are as follows: (1) Sulfate conjugates formed more stable complexes with albumin than the parent flavonoids. (2) Luteolin and naringenin conjugates showed no or only weak inhibitory action on the CYP enzymes examined. (3) Certain conjugates of luteolin and naringenin are potent inhibitors of OATP1B1 and/or OATP2B1 enzymes. (4) Conjugated metabolites of luteolin and naringenin may play an important role in the pharmacokinetic interactions of these flavonoids.
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Affiliation(s)
- Hana Kaci
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2., H-1117 Budapest, Hungary; Doctoral School of Biology, Institute of Biology, Eötvös Loránd University, Pázmány P. stny. 1/C, H-1117 Budapest, Hungary
| | - Slávka Bodnárová
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary
| | - Eszter Fliszár-Nyúl
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary
| | - Beáta Lemli
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary; Green Chemistry Research Group, János Szentágothai Research Center, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary
| | - Helena Pelantová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic
| | - Kateřina Valentová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic
| | - Éva Bakos
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
| | - Csilla Özvegy-Laczka
- Drug Resistance Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Eötvös Loránd Research Network, Magyar tudósok krt. 2., H-1117 Budapest, Hungary
| | - Miklós Poór
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Rókus u. 2, H-7624 Pécs, Hungary; Food Biotechnology Research Group, János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary.
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8
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Ximenes VF. Concomitant binding of two fluorescent probes at site-I of human serum albumin: The protein acting as a scaffold enabling fluorescence resonance energy transfer. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 234:112542. [PMID: 35973286 DOI: 10.1016/j.jphotobiol.2022.112542] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 07/25/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Human serum albumin (HSA) is the primary drug carrier in the blood plasma. Here, I aimed to show that two ligands can be accommodated simultaneously in the binding site-I of HSA. To do so, I studied the interaction inside the protein among site-I ligands of HSA via fluorescence resonance energy transfer (FRET), synchronous fluorescence, red edge excitation shift (REES), and induced circular dichroism (ICD). Warfarin (WAR), coumarin-153 (C153), 6-(p-toluidino)-2-naphthalenesulfonic acid sodium salt (TNS), dansylglycine (DGY), and 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM) were enrolled in the investigation. I found that WAR can transfer energy to C153 only in the presence of the protein. In addition, the presence of WAR at site-I altered the protein microenvironment felt by C153. The alteration was detected by measuring the synchronous fluorescence, REES, and ICD in C153. The findings were validated by measuring the energy transfer from TNS to DCM and the alteration in synchronous fluorescence and REES. FRET was not observed using WAR as donor and DGY as acceptor. The result is consistent, as DGY is a site-II ligand at a higher WAR distance. In all studied cases, the effects were only observed in the presence of HSA. In conclusion, the protein acted as a scaffold approximating the ligands. These findings prove that more than one ligand can simultaneously be complex at site-I of HSA.
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Affiliation(s)
- Valdecir Farias Ximenes
- Department of Chemistry, Faculty of Sciences, UNESP - São Paulo State University, 17033-360 Bauru, São Paulo, Brazil.
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9
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Madden E, McLachlan C, Oketch-Rabah H, Calderón AI. United States Pharmacopeia comprehensive safety review of Styphnolobium japonicum flower and flower bud. Phytother Res 2022; 36:2061-2071. [PMID: 35307893 DOI: 10.1002/ptr.7438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 02/16/2022] [Accepted: 02/25/2022] [Indexed: 11/05/2022]
Abstract
The dried flower and flower bud of Styphnolobium japonicum (L.) Schott (Japanese Sophora flower and Japanese Sophora flower bud, respectively) have long been used as herbal medicines in Asia. Today, they are marketed as dietary supplements in the United States for their anti-oxidative properties and as a source of flavonoids, including rutin and quercetin. This review focused on the safety of S. japonicum flower and flower bud as dietary supplement ingredients. No serious adverse events or toxicity were reported in the clinical or experimental animal studies we reviewed. Although some studies indicated that rutin or quercetin may have potential for drug interactions, none were identified for S. japonicum flower or flower bud. S. japonicum flower and flower bud are not known to have been associated with serious health risks when appropriately consumed in dietary supplements and have been admitted to the U.S. Pharmacopeial Convention monograph development process. However, pregnant and breastfeeding women should seek the advice of a healthcare professional because no data are available on their use by these special populations.
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Affiliation(s)
- Emily Madden
- United States Pharmacopeial Convention, Rockville, Maryland, USA
| | - Caleb McLachlan
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, Alabama, USA.,College of Science and Mathematics, Auburn University, Auburn, Alabama, USA
| | | | - Angela I Calderón
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, Alabama, USA.,United States Pharmacopeia Botanical Dietary Supplements and Herbal Medicines Expert Committee, Rockville, Maryland, USA
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10
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HPLC-DAD phenolics screening and in vitro investigation of haemostatic, antidiabetic, antioxidant and photoprotective properties of Centaurea tougourensis Boiss. & Reut. HERBA POLONICA 2022. [DOI: 10.2478/hepo-2021-0023] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Summary
Introduction
Traditional medicine has an important place in human history and this since antiquity. Indeed, during Egyptian and Chinese civilization era, many detailed manuscripts, describing the therapeutic effect of plants, were found which suggest that folk medicine is the basis of the actual medicine.
Objective
To investigate the phytochemical and pharmacological properties of the n-butanol (n-BuOH) and ethyl acetate (EA) extracts of the aerial part of Centaurea tougourensis.
Methods
The phytochemical evaluation was done based on HPLC-DAD approach. The antioxidant activity was determined by DPPH and cupric ion reducing antioxidant capacity (CUPRAC), while the hemostatic effect was performed using plasma recalcification time (PRT) method. The antidiabetic capacity was investigated by alpha-amylase inhibition assay and the photoprotective test was evaluated by the measurement of sun protection factor (SPF).
Results
13 phenolic compounds were identified in both extracts of C. tougourensis. These extracts showed antioxidant, haemostatic, antidiabetic and photoprotective properties with a dose-dependent manner. Amounts of n-BuOH activities were found higher, with a respective IC50 value of 0.72±0.07 μg/ml in DPPH assay, an A0.50 value lower than 3.125 μg/ml in CUPRAC assay besides a shortening rate percentage of coagulation (86.71%) in haemostatic assay, a moderate inhibition effect on alpha amylase activity with an IC50 value of (711.5±0.03 μg/ml) and a maximum sun protection factor of (56.035). These results were mostly found highly significant (p<0.001) when compared to respective standards.
Conclusion
This study demonstrated some pharmacological effects of C. tougourensis which suggests that our plant could be a good candidate to treat some illnesses related to oxidative stress, bleeding or skin cancer.
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11
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Progress of albumin-polymer conjugates as efficient drug carriers. PURE APPL CHEM 2022. [DOI: 10.1515/pac-2021-2006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Albumin is a protein that has garnered wide attention in nanoparticle-based drug delivery of cancer therapeutics due to its natural abundance and unique cancer-targeting ability. The propensity of albumin to naturally accumulate in tumours, further augmented by the incorporation of targeting ligands, has made the field of albumin-polymer conjugate development a much pursued one. Polymerization techniques such as RAFT and ATRP have paved the path to incorporate various polymers in the design of albumin-polymer hybrids, indicating the advancement of the field since the first instance of PEGylated albumin in 1977. The synergistic combination of albumin and polymer endows manifold features to these macromolecular hybrids to evolve as next generation therapeutics. The current review is successive to our previously published review on drug delivery vehicles based on albumin-polymer conjugates and aims to provide an update on the progress of albumin-polymer conjugates. This review also highlights the alternative of exploring albumin-polymer conjugates formed via supramolecular, non-covalent interactions. Albumin-based supramolecular polymer systems provide a versatile platform for functionalization, thereby, holding great potential in enhancing cytotoxicity and controlled delivery of therapeutic agents.
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12
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Exploring the interaction of bavachin and its glycoside derivatives with bovine serum albumin using spectroscopic and molecular docking approaches. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Molecular Basis of Interactions between the Antibiotic Nitrofurantoin and Human Serum Albumin: A Mechanism for the Rapid Drug Blood Transportation. Int J Mol Sci 2021; 22:ijms22168740. [PMID: 34445446 PMCID: PMC8395721 DOI: 10.3390/ijms22168740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/06/2021] [Accepted: 08/11/2021] [Indexed: 11/30/2022] Open
Abstract
Nitrofurantoin is an antimicrobial agent obtained through the addition of a nitro group and a side chain containing hydantoin to a furan ring. The interactions of the antibiotic with human serum albumin (HSA) have been investigated by fluorescence, UV-VIS, Fourier transform infrared spectroscopy (FTIR) spectroscopy, and protein-ligand docking studies. The fluorescence studies indicate that the binding site of the additive involves modifications of the environment around Trp214 at the level of subdomain IIA. Fluorescence and UV-VIS spectroscopy, displacement studies, and FTIR experiments show the association mode of nitrofurantoin to HSA, suggesting that the primary binding site of the antibiotic is located in Sudlow’s site I. Molecular modeling suggests that nitrofurantoin is involved in the formation of hydrogen bonds with Trp214, Arg218, and Ser454, and is located in the hydrophobic cavity of subdomain IIA. Moreover, the curve-fitting results of the infrared Amide I’ band indicate that the binding of nitrofurantoin induces little change in the protein secondary structure. Overall, these data clarify the blood transportation process of nitrofurantoin and its rapid transfer to the kidney for its elimination, hence leading to a better understanding of its biological effects and being able to design other molecules, based on nitrofurantoin, with a higher biological potential.
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14
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Wzorek J, Bednarek R, Watala C, Boncler M. Efficacy of a Combined Antiplatelet Therapy Is Not Affected by a Simultaneous Binding of Cangrelor and PSB 0777 to Albumin. Front Pharmacol 2021; 12:638257. [PMID: 33776774 PMCID: PMC7990796 DOI: 10.3389/fphar.2021.638257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 02/02/2021] [Indexed: 01/25/2023] Open
Abstract
Concurrent administration of two drugs may complicate the management of acute coronary syndromes: competitive drug displacement diminishes drug binding and alters drug pharmacodynamics. We investigated the interaction of two antiplatelet compounds (PSB 0777 and cangrelor) with human serum albumin (HSA) to determine whether they compete with one another for the binding to albumin. Both examined compounds have been earlier claimed to bind to HSA (PSB 0777) or plasma proteins (cangrelor). Fluorescence spectroscopy, surface plasmon resonance spectroscopy and molecular modeling indicated that PSB 0777 and cangrelor interacted with HSA with moderate affinity (KD∼10−5 M). The binding of cangrelor to HSA involved primarily hydrophobic interactions, while the interaction of PSB 0777 with HSA was driven by hydrophobic and electrostatic forces. It was found that PSB 0777 and cangrelor do not share the same binding site on the protein. Our findings highlight the importance of albumin in the transport of PSB 0777 and cangrelor and suggest that the antiplatelet activity of the examined compounds used in combination is not affected by competition-induced changes in drug binding to HSA.
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Affiliation(s)
- Joanna Wzorek
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Lodz, Poland
| | - Radosław Bednarek
- Department of Cytobiology and Proteomics, Medical University of Lodz, Lodz, Poland
| | - Cezary Watala
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Lodz, Poland
| | - Magdalena Boncler
- Department of Haemostasis and Haemostatic Disorders, Medical University of Lodz, Lodz, Poland
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15
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Wani TA, Bakheit AH, Zargar S, Alanazi ZS, Al-Majed AA. Influence of antioxidant flavonoids quercetin and rutin on the in-vitro binding of neratinib to human serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:118977. [PMID: 33017787 DOI: 10.1016/j.saa.2020.118977] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
This study was designed to examine the interaction of neratinib (NRB) with human serum albumin (HSA) in presence of flavonoids quercetin and rutin. Both quercetin and rutin can compete with NRB to bind to HSA and displace NRB from its binding site. The interaction mechanism was studied with several spectroscopic techniques and molecular docking. Static fluorescence quenching mechanism was observed on interaction of HSA with NRB. van der Waals force and hydrogen bond were involved in the HSA-NRB interaction as per the results of thermodynamic parameters. Further, the conformational changes were observed in the HSA on its interaction with NRB. Interaction of NRB with HSA in presence of quercetin and rutin resulted in changes in the binding constants of HSA-NRB suggesting some impact on the binding of NRB in the presence of flavonoids.
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Affiliation(s)
- Tanveer A Wani
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia.
| | - Ahmed H Bakheit
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Seema Zargar
- Department of Biochemistry, College of Science, King Saud University, PO Box 22452, Riyadh 11451, Saudi Arabia
| | - Zahi Saad Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdulrahman A Al-Majed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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16
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López-Yerena A, Perez M, Vallverdú-Queralt A, Escribano-Ferrer E. Insights into the Binding of Dietary Phenolic Compounds to Human Serum Albumin and Food-Drug Interactions. Pharmaceutics 2020; 12:E1123. [PMID: 33233356 PMCID: PMC7700232 DOI: 10.3390/pharmaceutics12111123] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 02/06/2023] Open
Abstract
The distribution of drugs and dietary phenolic compounds in the systemic circulation de-pends on, among other factors, unspecific/specific reversible binding to plasma proteins such as human serum albumin (HSA). Phenolic substances, present in plant-derived feeds, foods, beverages, herbal medicines, and dietary supplements, are of great interest due to their biological activity. Recently, considerable research has been directed at the formation of phenol-HSA complexes, focusing above all on structure-affinity relationships. The nucleophilicity and planarity of molecules can be altered by the number and position of hydroxyl groups on the aromatic ring and by hydrogenation. Binding affinities towards HSA may also differ between phenolic compounds in their native form and conjugates derived from phase II reactions. On the other hand, food-drug interactions may increase the concentration of free drugs in the blood, affecting their transport and/or disposition and in some cases provoking adverse or toxic effects. This is caused mainly by a decrease in drug binding affinities for HSA in the presence of flavonoids. Accordingly, to avoid the side effects arising from changes in plasma protein binding, the intake of flavonoid-rich food and beverages should be taken into consideration when treating certain pathologies.
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Affiliation(s)
- Anallely López-Yerena
- Department of Nutrition, Food Science and Gastronomy XaRTA, Faculty of Pharmacy and Food Sciences, Institute of Nutrition and Food Safety (INSA-UB), University of Barcelona, 08028 Barcelona, Spain; (A.L.-Y.); (M.P.); (A.V.-Q.)
| | - Maria Perez
- Department of Nutrition, Food Science and Gastronomy XaRTA, Faculty of Pharmacy and Food Sciences, Institute of Nutrition and Food Safety (INSA-UB), University of Barcelona, 08028 Barcelona, Spain; (A.L.-Y.); (M.P.); (A.V.-Q.)
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Anna Vallverdú-Queralt
- Department of Nutrition, Food Science and Gastronomy XaRTA, Faculty of Pharmacy and Food Sciences, Institute of Nutrition and Food Safety (INSA-UB), University of Barcelona, 08028 Barcelona, Spain; (A.L.-Y.); (M.P.); (A.V.-Q.)
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, 28029 Madrid, Spain
| | - Elvira Escribano-Ferrer
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III, 28029 Madrid, Spain
- Pharmaceutical Nanotechnology Group I+D+I Associated Unit to CSIC, Biopharmaceutics and Pharmacokinetics Unit, Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Institute of Nanoscience and Nanotechnology (IN2UB), Pharmacy and Food Sciences School, University of Barcelona, 08028 Barcelona, Spain
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17
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Cholesterol-lowering drugs the simvastatin and atorvastatin change the protease activity of pepsin: An experimental and computational study. Int J Biol Macromol 2020; 167:1414-1423. [PMID: 33202264 DOI: 10.1016/j.ijbiomac.2020.11.095] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 11/20/2022]
Abstract
In this study, the effect of long-term use drugs of cholesterol-lowering atorvastatin and simvastatin on the activity and molecular structure of pepsin as important gastric enzyme was investigated by various experimental and computational methods. Based on the results obtained from fluorescence experiments, both drugs can bond to pepsin and quench the fluorescence intensity of protein through the static quenching mechanism. Also analysis of the thermodynamic parameters of binding the drugs to pepsin showed that the main forces in the complex formation for both are hydrophobic interactions and van der Waals forces. The effects of the drugs on the enzymatic activity of pepsin were then investigated and results showed that in the presence of both drugs the catalytic activity of the enzyme was significantly increased in lower (0.3-0.6 mM) concentrations however about the atorvastatin, increasing the concentration (0.9 mM) decreased the protease activity of pepsin. Also as a result of the FTIR studies, it was found that binding of the drugs to protein did not significant alteration in the structure of the protein. In order to obtain the atomic details of drug-protein interactions, the computational calculations were performed. The results in good agreement with those obtained from the experimental for interaction; confirm that the drugs both are bind to a cleft near the active site of the protein without any change in the structure of pepsin. Overall from the results obtained in this study, it can be concluded that both simvastatin and atorvastatin can strongly bond to a location close to the active site of pepsin and the binding change the enzymatic activity of protein.
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18
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Xue P, Zhang G, Zhang J, Ren L. Interaction of flavonoids with serum albumin: A review. Curr Protein Pept Sci 2020; 22:CPPS-EPUB-111278. [PMID: 33167830 DOI: 10.2174/1389203721666201109112220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/23/2020] [Accepted: 10/02/2020] [Indexed: 11/22/2022]
Abstract
Flavonoids are plant products abundant in every day diet and claimed to be beneficial for human health. After absorption, flavonoids are transported by the serum albumin (SA), the most abundant carrier blood protein, through formation of flavonoids-SA complex. This review deals with the current state of knowledge on flavonoids-SA complex over the past 10 years, mainly involved multi-spectroscopic techniques and molecular dynamics simulation studies to explore the binding mechanism, thermodynamics and structural aspects of flavonoids binding to SA. Especially, the novel method, capillary electrophoresis, high performance affinity chromatography approach, native mass spectrometry and microscale thermophoresis used in characterization of the interaction between flavonoids and SA as well as flavonoid-based fluorescent probe for SA measurement are also included in this review.
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Affiliation(s)
- Peiyu Xue
- School of Biology and Food Engineering, Anyang Institute of Technology, Anyang 455000. China
| | - Guangjie Zhang
- School of Biology and Food Engineering, Anyang Institute of Technology, Anyang 455000. China
| | - Jie Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130062. China
| | - Li Ren
- College of Food Science and Engineering, Jilin University, Changchun 130062. China
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19
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Saito M, Maeda T, Ichihara T, Iwao T, Suzuki T. [The Effect of Increased Free Concentrations of Warfarin Due to Protein-binding Substitution in a Combination of Tolvaptan on the PT-INR]. YAKUGAKU ZASSHI 2020; 140:1269-1274. [PMID: 32684555 DOI: 10.1248/yakushi.20-00016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We previously reported that tolvaptan may influence warfarin pharmacodynamics in vivo; however, the mechanism responsible for this influence was not clear. In this study, we investigated the drug-drug interactions between warfarin and tolvaptan by measuring warfarin blood concentrations in 18 patients who received warfarin therapy and in 24 who received warfarin+tolvaptan therapy. The free warfarin concentrations significantly increased in patients who were also receiving oral tolvaptan (p=0.04). In vitro albumin-binding experiments showed that the free warfarin concentrations significantly increased with the addition of tolvaptan, in a dose-dependent manner, through albumin-binding substitution (approximately 2.5 times). Both clinical and in vitro data showed that tolvaptan increased the unbound warfarin serum concentration. The prothrombin time-international normalized ratio (PT-INR) tended to increase within 2 weeks when tolvaptan was added at clinically used doses (p=0.14). Special attention is warranted in cases with a serum tolvaptan concentration of ≥125 ng/mL (≥7.5 mg/d) for at least 2 weeks following oral tolvaptan administration.
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Affiliation(s)
- Masayuki Saito
- Department of Pharmacy, Tosei General Hospital.,Department of Clinical Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Tohru Maeda
- College of Pharmacy, Kinjo Gakuin University
| | | | - Takahiro Iwao
- Department of Clinical Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University
| | - Tadashi Suzuki
- Department of Clinical Pharmacy, Graduate School of Pharmaceutical Sciences, Nagoya City University
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20
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Rimac H, Tandarić T, Vianello R, Bojić M. Indomethacin Increases Quercetin Affinity for Human Serum Albumin: A Combined Experimental and Computational Study and Its Broader Implications. Int J Mol Sci 2020; 21:ijms21165740. [PMID: 32785199 PMCID: PMC7460863 DOI: 10.3390/ijms21165740] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 12/17/2022] Open
Abstract
Human serum albumin (HSA) is the most abundant carrier protein in the human body. Competition for the same binding site between different ligands can lead to an increased active concentration or a faster elimination of one or both ligands. Indomethacin and quercetin both bind to the binding site located in the IIA subdomain. To determine the nature of the HSA-indomethacin-quercetin interactions, spectrofluorometric, docking, molecular dynamics studies, and quantum chemical calculations were performed. The results show that the indomethacin and quercetin binding sites do not overlap. Moreover, the presence of quercetin does not influence the binding constant and position of indomethacin in the pocket. However, binding of quercetin is much more favorable in the presence of indomethacin, with its position and interactions with HSA significantly changed. These results provide a new insight into drug-drug interactions, which can be important in situations when displacement from HSA or other proteins is undesirable or even desirable. This principle could also be used to deliberately prolong or shorten the xenobiotics' half-life in the body, depending on the desired outcomes.
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Affiliation(s)
- Hrvoje Rimac
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia;
- Laboratory of Computational Modelling of Drugs, South Ural State University, 454008 Chelyabinsk, Russia
- Correspondence:
| | - Tana Tandarić
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (T.T.); (R.V.)
| | - Robert Vianello
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia; (T.T.); (R.V.)
| | - Mirza Bojić
- Department of Medicinal Chemistry, University of Zagreb Faculty of Pharmacy and Biochemistry, 10000 Zagreb, Croatia;
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21
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Gecibesler IH, Aydin M. Plasma Protein Binding of Herbal-Flavonoids to Human Serum Albumin and Their Anti-proliferative Activities. AN ACAD BRAS CIENC 2020; 92:e20190819. [PMID: 32491127 DOI: 10.1590/0001-3765202020190819] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022] Open
Abstract
Herbal-flavonoids (HF) as polyphenolic secondary metabolites are taken in the daily diet to join in many metabolic processes in the human organism. Anti-proliferative activities and human serum albumin (HSA) binding capacities of herbal-flavonoids namely 7,5'-dimethoxyisoetin (HF1), homoorientin-6''-4-O-methyl-myo-inositol (HF2), (2R, 3R)-(+)-dihydrokaempferol-7,4'-dimethylether (HF3), eriodictyol-7,4'-dimethylether (HF4) and flavonoids isoorientin (HF5) and genkwanin (HF6) were investigated. Anti-proliferative activities were determined by the xCELLigence system by treatment with human prostate (PC3) and cervical cancer (HeLa) cells. The binding capacities were studied by two-dimensional (2D-FL) and three-dimensional (3D-FL) fluorescence spectroscopy. HeLa and PC3 cell lines were treated with flavonoids at 10, 50 and 100 μg/mL concentrations over a 48 hour period. Stable anti-proliferative efficacy plots were obtained for tested flavonoids. From the flavonoids, HF3 and HF4 showed the strongest anti-proliferative effect against PC3 and HeLa cell line. HF1 and HF2 exhibited the strongest binding capacity to the HSA corresponding to Kb values of 3.81 x 104 M-1 and 6.00 x 104 M-1, respectively. The studies revealed that the flavonoids form the basis of in vivo preclinical studies as important nutraceuticals of the daily diet, as well as modelled in medical and pharmacological applications.
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Affiliation(s)
| | - Murat Aydin
- Faculty of Science and Art, Bingol University, Bingol, Turkey
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22
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Interactions of 7,8-Dihydroxyflavone with Serum Albumin as well as with CYP2C9, CYP2C19, CYP3A4, and Xanthine Oxidase Biotransformation Enzymes. Biomolecules 2019; 9:biom9110655. [PMID: 31731555 PMCID: PMC6920897 DOI: 10.3390/biom9110655] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/15/2019] [Accepted: 10/23/2019] [Indexed: 02/06/2023] Open
Abstract
7,8-dihydroxyflavone (DHF) is a flavone aglycone which has beneficial effects in several central nervous system diseases. Most of the pharmacokinetic properties of DHF have been characterized, while only limited information is available regarding its interactions with serum albumin and biotransformation enzymes. In this study, the interactions of DHF with albumin was examined employing fluorescence spectroscopy and ultrafiltration. Furthermore, the inhibitory effects of DHF on cytochrome P450 (CYP2C9, CYP2C19, and CYP3A4) and xanthine oxidase (XO) enzymes were also tested using in vitro models. Our results demonstrate that DHF forms a stable complex with albumin (K = 4.9 × 105 L/mol) and that it is able to displace both Site I and Site II ligands. Moreover, DHF proved to be a potent inhibitor of each enzyme tested, showing similar or slightly weaker effects than the positive controls used. Considering the above-listed observations, the coadministration of DHF with drugs may interfere with the drug therapy due to the development of pharmacokinetic interactions.
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23
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Fliszár-Nyúl E, Lemli B, Kunsági-Máté S, Dellafiora L, Dall'Asta C, Cruciani G, Pethő G, Poór M. Interaction of Mycotoxin Alternariol with Serum Albumin. Int J Mol Sci 2019; 20:ijms20092352. [PMID: 31083629 PMCID: PMC6539399 DOI: 10.3390/ijms20092352] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 05/08/2019] [Accepted: 05/08/2019] [Indexed: 01/29/2023] Open
Abstract
Alternariol (AOH) is a mycotoxin produced by Alternaria species. In vitro studies suggest the genotoxic, mutagenic, and endocrine disruptor effects of AOH, and an increased incidence of esophageal cancer has been reported related to higher AOH exposure. Human serum albumin (HSA) is the most abundant plasma protein in the circulation, it is able to affect toxicokinetic properties of numerous xenobiotics. HSA forms stable complexes with several mycotoxins, however, the interaction of AOH with albumin has not been examined. In this study, the complex formation of AOH with HSA was tested, employing fluorescence spectroscopy, ultrafiltration, and molecular modeling. Each spectroscopic measurement shows the formation of stable AOH-HSA complexes (K = 4 × 105 L/mol). Investigations with site markers (in spectroscopic and ultrafiltration models) as well as modeling studies suggest that AOH occupies Sudlow’s site I as a high-affinity binding site in HSA. The binding affinity of AOH towards bovine, porcine, and rat albumins was also tested, suggesting that AOH binds to rat albumin with considerably higher affinity than other albumins tested. Our results demonstrate the strong interaction of AOH with serum albumins, suggesting the potential in vivo importance of these interactions.
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Affiliation(s)
- Eszter Fliszár-Nyúl
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Szigeti út 12, H-7642 Pécs; Hungary.
- János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7642 Pécs; Hungary.
| | - Beáta Lemli
- János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7642 Pécs; Hungary.
- Institute of Organic and Medicinal Chemistry, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary.
| | - Sándor Kunsági-Máté
- János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7642 Pécs; Hungary.
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Pécs, Rókus utca 2, H-7642 Pécs, Hungary.
| | - Luca Dellafiora
- Department of Food and Drug, University of Parma, Via G.P. 7 Usberti 17/A, 43124 Parma, Italy.
| | - Chiara Dall'Asta
- Department of Food and Drug, University of Parma, Via G.P. 7 Usberti 17/A, 43124 Parma, Italy.
| | - Gabriele Cruciani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy.
| | - Gábor Pethő
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Szigeti út 12, H-7642 Pécs; Hungary.
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Szigeti út 12, H-7624 Pécs, Hungary.
| | - Miklós Poór
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Szigeti út 12, H-7642 Pécs; Hungary.
- János Szentágothai Research Centre, University of Pécs, Ifjúság útja 20, H-7642 Pécs; Hungary.
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24
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Li H, Jiang Y, Wang Y, Lv H, Xie H, Yang G, Guo C, Tang J, Tang T. The Effects of Warfarin on the Pharmacokinetics of Senkyunolide I in a Rat Model of Biliary Drainage After Administration of Chuanxiong. Front Pharmacol 2019; 9:1461. [PMID: 30631279 PMCID: PMC6315196 DOI: 10.3389/fphar.2018.01461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 11/29/2018] [Indexed: 11/13/2022] Open
Abstract
The aim of this study was to elucidate the effects of warfarin on senkyunolide I in a rat model of biliary drainage after oral administration Chuanxiong extract based on pharmacokinetics. Thirty-two rats were randomly divided into four groups: CN, healthy rats after a single administration of Chuanxiong; CO, rats with biliary drainage after a single administration of Chuanxiong; WCN, healthy rats after the administration of Chuanxiong and warfarin; WCO, rats with biliary drainage after the administration of Chuanxiong and warfarin. A series of blood samples were collected at different time points before and after oral administration. An ultra-performance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) method for quantification of the main components of Chuanxiong and methyclothiazide (internal standard) have been established. The validated method was successfully applied to a comparative pharmacokinetics study. After calculated by the DAS 2.1.1 software, the pharmacokinetics parameters of senkyunolide I showed a significant difference between the CN and CO groups, the AUC0-t, and Cmax of CO group increased by 5.45, 4.02 folds, respectively. There was a significant difference between the WCO and WCN groups, the Tmax of WCO group prolonged 67%; compared to the CN group, the AUC0-t, and Cmax of WCN group raised 4.84, 3.49 folds, respectively; the Tmax and Cmax between the CO and WCO groups also showed a significant difference. The drug warfarin significantly affected the senkyunolide I disposition, which partly due to its enterohepatic circulation process in rat plasma after oral administration of Chuanxiong. The present study highlights an urgent evidence for drug-herb interactions.
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Affiliation(s)
- Haigang Li
- Department of Pharmacy, Changsha Medical University, Changsha, China.,Institute of Integrative Chinese Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Yu Jiang
- Department of Gerontology, Affiliated Hospital of T.C.M. of Xinjiang Medical University, Urumqi, China
| | - Yang Wang
- Institute of Integrative Chinese Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Huiying Lv
- Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Haitang Xie
- Anhui Provincial Centre for Drug Clinical Evaluation, The First Affiliated Hospital of Wannan Medical College, Wuhu, China
| | - Guoping Yang
- Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Chengxian Guo
- Center of Clinical Pharmacology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Jing Tang
- Department of Pharmacy, Changsha Medical University, Changsha, China
| | - Tao Tang
- Institute of Integrative Chinese Medicine, Xiangya Hospital, Central South University, Changsha, China
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25
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Balaei F, Ghobadi S. Hydrochlorothiazide binding to human serum albumin induces some compactness in the molecular structure of the protein: A multi-spectroscopic and computational study. J Pharm Biomed Anal 2019; 162:1-8. [DOI: 10.1016/j.jpba.2018.09.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 08/21/2018] [Accepted: 09/03/2018] [Indexed: 10/28/2022]
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26
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Stepanić V, Matić S, Amić A, Lučić B, Milenković D, Marković Z. Effects of conjugation metabolism on radical scavenging and transport properties of quercetin – In silico study. J Mol Graph Model 2019; 86:278-285. [DOI: 10.1016/j.jmgm.2018.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/22/2018] [Accepted: 10/24/2018] [Indexed: 11/29/2022]
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27
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Interactions of Bromocarbazoles with Human Serum Albumin Using Spectroscopic Methods. Molecules 2018; 23:molecules23123120. [PMID: 30487451 PMCID: PMC6321538 DOI: 10.3390/molecules23123120] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 11/26/2018] [Accepted: 11/26/2018] [Indexed: 01/01/2023] Open
Abstract
The 1,3,6,8-tetrabromocarbazole and 3-bromocarbazole have attracted great attention in the ecotoxicology field recently as hazardous environmental contaminants. In this study, the quenching mechanism of these two substances binding with human serum albumin (HSA) has been investigated with spectroscopic methods. Through fluorescence quenching and binding site experiments with steady-state fluorescence and UV-Vis spectra, the intrinsic fluorescence of HSA quenched by 1,3,6,8-tetrabromocarbazole and 3-bromocarbazole both in static process, are activated by binding to site II (subdomain IIIA) of the HSA. In addition, it was not only found that the conformation and secondary structure of the proteins changes, but also that their spontaneous binding processes were driven by electrostatic interactions as well as hydrophobic forces for HSA-1,3,6,8-tetrabromocarbazole, and by typical hydrophobic forces for HSA-3-bromocarbazole. The above studies are beneficial to enhance our understanding of the ecotoxicology and environmental behaviors of halogenated carbazoles.
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The Influence of In Vivo Metabolic Modifications on ADMET Properties of Green Tea Catechins–In Silico Analysis. J Pharm Sci 2018; 107:2957-2964. [DOI: 10.1016/j.xphs.2018.07.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 11/17/2022]
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Mohos V, Bencsik T, Boda G, Fliszár-Nyúl E, Lemli B, Kunsági-Máté S, Poór M. Interactions of casticin, ipriflavone, and resveratrol with serum albumin and their inhibitory effects on CYP2C9 and CYP3A4 enzymes. Biomed Pharmacother 2018; 107:777-784. [DOI: 10.1016/j.biopha.2018.08.068] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/15/2018] [Accepted: 08/15/2018] [Indexed: 01/17/2023] Open
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He X, Sui Y, Wang S. Stepwise frontal affinity chromatography model for drug and protein interaction. Anal Bioanal Chem 2018; 410:5807-5815. [DOI: 10.1007/s00216-018-1194-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/30/2018] [Accepted: 06/11/2018] [Indexed: 12/12/2022]
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Poór M, Boda G, Mohos V, Kuzma M, Bálint M, Hetényi C, Bencsik T. Pharmacokinetic interaction of diosmetin and silibinin with other drugs: Inhibition of CYP2C9-mediated biotransformation and displacement from serum albumin. Biomed Pharmacother 2018; 102:912-921. [DOI: 10.1016/j.biopha.2018.03.146] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 03/20/2018] [Accepted: 03/23/2018] [Indexed: 01/05/2023] Open
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Liang GW, Chen YC, Wang Y, Wang HM, Pan XY, Chen PH, Niu QX. Interaction between Saikosaponin D, Paeoniflorin, and Human Serum Albumin. Molecules 2018; 23:molecules23020249. [PMID: 29382045 PMCID: PMC6017552 DOI: 10.3390/molecules23020249] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 01/19/2018] [Accepted: 01/22/2018] [Indexed: 02/05/2023] Open
Abstract
Saikosaponin D (SSD) and paeoniflorin (PF) are the major active constituents of Bupleuri Radix and Paeonia lactiflora Pall, respectively, and have been widely used in China to treat liver and other diseases for many centuries. We explored the binding of SSD/PF to human serum albumin (HSA) by using fluorospectrophotometry, circular dichroism (CD) and molecular docking. Both SSD and PF produced a conformational change in HSA. Fluorescence quenching was accompanied by a blue shift in the fluorescence spectra. Co-binding of PF and SSD also induced quenching and a conformational change in HSA. The Stern-Volmer equation showed that quenching was dominated by static quenching. The binding constant for ternary interaction was below that for binary interaction. Site-competitive experiments demonstrated that SSD/PF bound to site I (subdomain IIA) and site II (subdomain IIIA) in HSA. Analysis of thermodynamic parameters indicated that hydrogen bonding and van der Waals forces were mostly responsible for the binary association. Also, there was energy transfer upon binary interaction. Molecular docking supported the experimental findings in conformation, binding sites and binding forces.
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Affiliation(s)
- Guo-Wu Liang
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Yi-Cun Chen
- Department of Pharmacology, Traditional Chinese Medicine Laboratory, Shantou University Medical College, Guangdong 515041, China.
| | - Yi Wang
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Hong-Mei Wang
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Xiang-Yu Pan
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
| | - Pei-Hong Chen
- Department of Pharmacology, Traditional Chinese Medicine Laboratory, Shantou University Medical College, Guangdong 515041, China.
| | - Qing-Xia Niu
- Department of Pathophysiology, Key Immunopharmacology Laboratory, Institute of Inflammation and Immune Diseases, Shantou University Medical College, Guangdong 515041, China.
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