1
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Zanetti C, Li L, Gaspar RDL, Santovito E, Elisseeva S, Collins SG, Maguire AR, Papkovsky DB. Susceptibility of the Different Oxygen-Sensing Probes to Interferences in Respirometric Bacterial Assays with Complex Media. SENSORS (BASEL, SWITZERLAND) 2024; 24:267. [PMID: 38203132 PMCID: PMC10781214 DOI: 10.3390/s24010267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/20/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024]
Abstract
Respirometric microbial assays are gaining popularity, but their uptake is limited by the availability of optimal O2 sensing materials and the challenge of validating assays with complex real samples. We conducted a comparative evaluation of four different O2-sensing probes based on Pt-porphyrin phosphors in respirometric bacterial assays performed on standard time-resolved fluorescence reader. The macromolecular MitoXpress, nanoparticle NanO2 and small molecule PtGlc4 and PtPEG4 probes were assessed with E. coli cells in five growth media: nutrient broth (NB), McConkey (MC), Rapid Coliform ChromoSelect (RCC), M-Lauryl lauryl sulfate (MLS), and Minerals-Modified Glutamate (MMG) media. Respiration profiles of the cells were recorded and analyzed, along with densitometry profiles and quenching studies of individual media components. This revealed several limiting factors and interferences impacting assay performance, which include probe quenched lifetime, instrument temporal resolution, inner filter effects (mainly by indicator dyes), probe binding to lipophilic components, and dynamic and static quenching by media components. The study allowed for the ranking of the probes based on their ruggedness, resilience to interferences and overall performance in respirometric bacterial assays. The 'shielded' probe NanO2 outperformed the established MitoXpress probe and the small molecule probes PtGlc4 and PtPEG4.
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Affiliation(s)
- Chiara Zanetti
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, T12 K8AF Cork, Ireland; (C.Z.); (L.L.)
| | - Liang Li
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, T12 K8AF Cork, Ireland; (C.Z.); (L.L.)
| | | | - Elisa Santovito
- National Research Council of Italy, Institute of Sciences of Food Production, Via Amendola 122/O, 70126 Bari, Italy;
| | - Sophia Elisseeva
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, T12 K8AF Cork, Ireland; (C.Z.); (L.L.)
| | - Stuart G. Collins
- School of Chemistry, University College Cork, Pharmacy Building, College Road, T12 YN60 Cork, Ireland; (S.G.C.); (A.R.M.)
| | - Anita R. Maguire
- School of Chemistry, University College Cork, Pharmacy Building, College Road, T12 YN60 Cork, Ireland; (S.G.C.); (A.R.M.)
| | - Dmitri B. Papkovsky
- School of Biochemistry and Cell Biology, University College Cork, Pharmacy Building, College Road, T12 K8AF Cork, Ireland; (C.Z.); (L.L.)
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2
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Banik R, Das S, Ghosh A, Ghosh S. Comparative studies on the aggregate formation of synthesized zwitterionic gemini and monomeric surfactants in the presence of the amphiphilic antipsychotic drug chlorpromazine hydrochloride in aqueous solution: an experimental and theoretical approach. SOFT MATTER 2023; 19:7995-8010. [PMID: 37819269 DOI: 10.1039/d3sm00907f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
The formation of aggregates, which are widely used in the field of biochemistry and the medical industry, was studied with different compositions of alkyl betaine gemini surfactant (C14Ab) in conjugation with chlorpromazine hydrochloride (CPZ). The results were compared with those of a single-chain zwitterionic surfactant (C12DmCB) of the same type with CPZ. Dynamic light scattering (DLS), confocal laser scanning microscopy (CLSM), and transmission electron microscopy (TEM) methods were used to distinguish the aggregates for the CPZ/C14Ab system in aqueous solutions above a certain mole fraction of the drug CPZ (αCPZ = 0.2). Time-resolved fluorescence decay measurements of acridine orange revealed relative polarity near the head group regions of mixed micelle (CPZ/C14Ab and CPZ/C12DmCB) systems. The hydrophilic environment around the head group regions of the CPZ/C14Ab system was different from that in the case of the CPZ/C12DmCB system. On the other hand, several theoretical models were employed (Clint, Rubingh, Motomura, and SPB) for mixed micellar systems to elucidate the different interaction parameters. Such a systematic study of a zwitterionic gemini amphiphile and its interaction with other amphiphiles and an amphiphilic drug molecule is rare in the literature.
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Affiliation(s)
- Rajesh Banik
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata-700032, West Bengal, India.
| | - Sourav Das
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata-700032, West Bengal, India.
| | - Asitanga Ghosh
- Department of Chemistry, Hooghly Mohsin College, Chinsurah, Hooghly, 712101, West Bengal, India
| | - Soumen Ghosh
- Centre for Surface Science, Physical Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata-700032, West Bengal, India.
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3
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Pilipović A, Vapa I, Tepavčević V, Puača G, Poša M. Ternary Mixed Micelle Hexadecyltrimethylammonium Bromide-Dodecyltrimethylammonium Bromide-Sodium Deoxycholate: Gibbs Free Energy of Mixing and Excess Gibbs Energy of Mixing. Molecules 2023; 28:6722. [PMID: 37764498 PMCID: PMC10535795 DOI: 10.3390/molecules28186722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
Pharmaceutical, food, and cosmetic formulations often contain binary or ternary surfactant mixtures with synergistic interactions amongst micellar building blocks. Here, a ternary mixture of the surfactants hexadecyltrimethylammonium bromide, dodecyltrimethylammonium bromide, and sodium deoxycholate is examined to see if the molar fractions of the surfactants in the ternary mixed micellar pseudophase are determined by the interaction coefficients between various pairs of the surfactants or by their propensity to self-associate. Critical micelle concentrations (CMC) of the analyzed ternary mixtures are determined experimentally (spectrofluorimetrically using pyrene as the probe molecule). Thermodynamic parameters of ternary mixtures are calculated from CMC values using the Regular Solution protocol. The tendency for monocomponent surfactants to self-associate (lower value of CMC) determines the molar fractions of surfactant in the mixed micelle if there is no issue with the packing of the micelle building units of the ternary mixed micelle. If a more hydrophobic surfactant is incorporated into the mixed micelle, the system (an aqueous solution of surfactants) is then the most thermodynamically stabilized.
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Affiliation(s)
- Ana Pilipović
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljka 3, 21000 Novi Sad, Serbia; (I.V.); (V.T.); (G.P.)
| | | | | | | | - Mihalj Poša
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Hajduk Veljka 3, 21000 Novi Sad, Serbia; (I.V.); (V.T.); (G.P.)
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4
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Rovnyak D, He J, Kong S, Eckenroad KW, Manley GA, Geffert RM, Krout MR, Strein TG. Determining sequential micellization steps of bile salts with multi-CMC modeling. J Colloid Interface Sci 2023; 644:496-508. [PMID: 37146486 DOI: 10.1016/j.jcis.2023.03.146] [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: 11/01/2022] [Revised: 03/02/2023] [Accepted: 03/23/2023] [Indexed: 05/07/2023]
Abstract
HYPOTHESIS Bile salts exhibit complex concentration-dependent micellization in aqueous solution, rooted in a long-standing hypothesis of increasing size in bile aggregation that has historically focused on the measurement of only one CMC detected by a given method, without resolving successive stepwise aggregates. Whether bile aggregation is continuous or discrete, at what concentration does the first aggregate form, and how many aggregation steps occur, all remain as open questions. EXPERIMENTS Bile salt critical micelle concentrations (CMCs) were investigated with NMR chemical shift titrations and a multi-CMC phase separation modeling approach developed herein. The proposed strategy is to establish a correspondence of the phase separation and mass action models to treat the first CMC; subsequent micellization steps, involving larger micelles, are then treated as phase separation events. FINDINGS The NMR data and the proposed multi-CMC model reveal and resolve multiple closely spaced sequential preliminary, primary, and secondary discrete CMCs in dihydroxy and trihydroxy bile salt systems in basic (pH 12) solutions with a single model of one NMR data set. Complex NMR data are closely explained by the model. Four CMCs are established in deoxycholate below 100 mM (298 K, pH 12): 3.8 ± 0.5 mM, 9.1 ± 0.3 mM, 27 ± 2 mM, and 57 ± 4 mM, while three CMCs were observed in multiple bile systems, also under basic conditions. Global fitting leverages the sensitivity of different protons to different aggregation stages. In resolving these closely spaced CMCs, the method also obtains chemical shifts of these spectroscopically inaccessible (aka dark) states of the distinct micelles.
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Affiliation(s)
- David Rovnyak
- Dent Drive, Department of Chemistry, Bucknell University, Lewisburg, PA 17837, USA.
| | - Jiayi He
- University of Pennsylvania, Department of Chemistry, 231 S. 34 Street, Philadelphia, PA 19104-6323, USA.
| | - Sophie Kong
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of California San Francisco, 1700 4th St, San Francisco, CA 94158, USA.
| | - Kyle W Eckenroad
- Bristol Myers Squibb, 1 Squibb Drive, 92-218 New Brunswick, NJ 08901, USA.
| | - Gregory A Manley
- AB SCIEX LLC, 500 Old Connecticut Path, Framingham, MA 01701, USA
| | - Raeanne M Geffert
- The University of North Carolina at Chapel Hill, UNC Eshelman School of Pharmacy, Division of Pharmacotherapy and Experimental Therapeutics, Kerr Hall, Campus Box 7569, Chapel Hill, NC 27599-7569, USA
| | - Michael R Krout
- Dent Drive, Department of Chemistry, Bucknell University, Lewisburg, PA 17837, USA.
| | - Timothy G Strein
- Dent Drive, Department of Chemistry, Bucknell University, Lewisburg, PA 17837, USA.
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5
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Tan J, Gjerde N, Del Giudice A, Knudsen KD, Galantini L, Du G, Schillén K, Sande SA, Nyström B. Interactions in Aqueous Mixtures of Cationic Hydroxyethyl Cellulose and Different Anionic Bile Salts. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3732-3741. [PMID: 36791398 PMCID: PMC9983013 DOI: 10.1021/acs.jafc.3c00076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
It is known that the reduction of blood cholesterol can be accomplished through foods containing a large number of dietary fibers; this process is partially related to the binding of bile salt to fibers. To gain new insights into the interactions between dietary fibers and bile salts, this study investigates the interactions between cationic hydroxyethyl cellulose (catHEC) and sodium deoxycholate (NaDC) or sodium cholate (NaC), which have a similar structure. Turbidity measurements reveal strong interactions between catHEC and NaDC, and under some conditions, macroscopic phase separation occurs. In contrast, the interactions with NaC are weak. At a catHEC concentration of 2 wt %, incipient phase separation is approached at concentrations of NaC and NaDC of 32.5 and 19.3 mM, respectively. The rheological results show strong interactions and a prominent viscosification effect for the catHEC/NaDC system but only moderate interactions for the catHEC/NaC system. Both cryogenic transmission electron microscopy and small-angle X-ray scattering results display fundamental structural differences between the two systems, which may explain the stronger interactions in the presence of NaDC. The surmise is that the extended structures formed in the presence of NaDC can easily form connections and entanglements in the network.
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Affiliation(s)
- Julia
Jianwei Tan
- School
of Pharmacy, Department of Pharmaceutics, University of Oslo, P.O. Box 1068, Blindern, N-0316 Oslo, Norway
| | - Natalie Gjerde
- Department
of Chemistry, ‘‘Sapienza’’
University of Rome, P.O. Box 34, Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | - Alessandra Del Giudice
- Department
of Chemistry, ‘‘Sapienza’’
University of Rome, P.O. Box 34, Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | | | - Luciano Galantini
- Department
of Chemistry, ‘‘Sapienza’’
University of Rome, P.O. Box 34, Roma 62, Piazzale A. Moro 5, I-00185 Roma, Italy
| | - Guanqun Du
- Division
of Physical Chemistry, Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Karin Schillén
- Division
of Physical Chemistry, Department of Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Sverre Arne Sande
- School
of Pharmacy, Department of Pharmaceutics, University of Oslo, P.O. Box 1068, Blindern, N-0316 Oslo, Norway
| | - Bo Nyström
- Department
of Chemistry, University of Oslo, P.O. Box 1033, Blindern, N-0315 Oslo, Norway
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6
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A comparative study on photophysics of meso-substituted mono- and bis-BODIPY carbazoles. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Heterologous Expression of Recombinant Human Cytochrome P450 (CYP) in Escherichia coli: N-Terminal Modification, Expression, Isolation, Purification, and Reconstitution. BIOTECH 2023; 12:biotech12010017. [PMID: 36810444 PMCID: PMC9944785 DOI: 10.3390/biotech12010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Cytochrome P450 (CYP) enzymes play important roles in metabolising endogenous and xenobiotic substances. Characterisations of human CYP proteins have been advanced with the rapid development of molecular technology that allows heterologous expression of human CYPs. Among several hosts, bacteria systems such as Escherichia coli (E. coli) have been widely used thanks to their ease of use, high level of protein yields, and affordable maintenance costs. However, the levels of expression in E. coli reported in the literature sometimes differ significantly. This paper aims to review several contributing factors, including N-terminal modifications, co-expression with a chaperon, selections of vectors and E. coli strains, bacteria culture and protein expression conditions, bacteria membrane preparations, CYP protein solubilizations, CYP protein purifications, and reconstitution of CYP catalytic systems. The common factors that would most likely lead to high expression of CYPs were identified and summarised. Nevertheless, each factor may still require careful evaluation for individual CYP isoforms to achieve a maximal expression level and catalytic activity. Recombinant E. coli systems have been evidenced as a useful tool in obtaining the ideal level of human CYP proteins, which ultimately allows for subsequent characterisations of structures and functions.
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8
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Mohanty S, Tirkey B, Jena SR, Samanta L, Subuddhi U. Exploring Steroidal Surfactants as Potential Drug Carriers for an Anticancer Drug Curcumin: An Insight into the Effect of Surfactants' Structure on the Photophysical Properties, Stability, and Activity of Curcumin. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1852-1869. [PMID: 36691916 DOI: 10.1021/acs.langmuir.2c02797] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Despite having tremendous medicinal benefits, the practical applications of curcumin are limited, owing to two major challenges: poor aqueous solubility and lack of bioavailability. In this regard, biosurfactant-based micellar systems have surged recently for the development of novel and more effective formulations because of their biological relevance. This study deals with a comprehensive and comparative investigation on the effect of seven structurally different steroidal surfactants on the photophysical properties of curcumin and also evaluates these steroidal surfactants as possible drug delivery media for curcumin. The photophysical properties of curcumin exhibited a strong dependence on the structure of the steroidal surfactant; the extent of excited-state proton transfer between curcumin and the surfactants depends strongly on the type of the side chain in the surfactants, which mostly dictates the photophysics of curcumin in the presence of these structural variants. The solubility of curcumin and its stability at different pHs and temperatures and in the presence of salt are significantly enhanced in the presence of these surfactants. Furthermore, the curcumin-loaded micelles exhibited improved intracellular uptake and cytotoxicity against MCF-7 cancer cells than pristine curcumin. Among these steroidal surfactants, CHAPS, the zwitterionic derivative of cholic acid, was the most efficient one to offer better solubility and stability to curcumin under all conditions, and the death rate of MCF-7 cells by curcumin was found to be the highest in the presence of CHAPS, indicating the enhanced bioavailability of curcumin. Therefore, CHAPS-based colloids are found to be promising candidates as potential drug carriers for curcumin.
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Affiliation(s)
- Subhrajit Mohanty
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha769008, India
| | - Binita Tirkey
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha769008, India
| | - Soumya Ranjan Jena
- Department of Zoology, Ravenshaw University, Cuttack, Odisha753003, India
| | - Luna Samanta
- Department of Zoology, Ravenshaw University, Cuttack, Odisha753003, India
| | - Usharani Subuddhi
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha769008, India
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9
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Pan L, Yu Z, Liang X, Yao J, Fu Y, He X, Ren X, Chen J, Li X, Lu M, Lan T. Sodium cholate ameliorates nonalcoholic steatohepatitis by activation of FXR signaling. Hepatol Commun 2023; 7:e0039. [PMID: 36706173 PMCID: PMC9988322 DOI: 10.1097/hc9.0000000000000039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/25/2022] [Indexed: 01/29/2023] Open
Abstract
Non-alcoholic steatohepatitis (NASH) has become a major cause of liver transplantation and liver-associated death. The gut-liver axis is a potential therapy for NASH. Sodium cholate (SC) is a choleretic drug whose main component is bile acids and has anti-inflammatory, antifibrotic, and hepatoprotective effects. This study aimed to investigate whether SC exerts anti-NASH effects by the gut-liver axis. Mice were fed with an high-fat and high-cholesterol (HFHC) diet for 20 weeks to induce NASH. Mice were daily intragastric administrated with SC since the 11th week after initiation of HFHC feeding. The toxic effects of SC on normal hepatocytes were determined by CCK8 assay. The lipid accumulation in hepatocytes was virtualized by Oil Red O staining. The mRNA levels of genes were determined by real-time quantitative PCR assay. SC alleviated hepatic injury, abnormal cholesterol synthesis, and hepatic steatosis and improved serum lipid profile in NASH mice. In addition, SC decreased HFHC-induced hepatic inflammatory cell infiltration and collagen deposition. The target protein-protein interaction network was established through Cytoscape software, and NR1H4 [farnesoid x receptor (FXR)] was identified as a potential target gene for SC treatment in NASH mice. SC-activated hepatic FXR and inhibited CYP7A1 expression to reduce the levels of bile acid. In addition, high-dose SC attenuated the abnormal expression of cancer markers in NASH mouse liver. Finally, SC significantly increased the expression of FXR and FGF15 in NASH mouse intestine. Taken together, SC ameliorates steatosis, inflammation, and fibrosis in NASH mice by activating hepatic and intestinal FXR signaling so as to suppress the levels of bile acid in NASH mouse liver and intestine.
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Affiliation(s)
- Linyu Pan
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Ze Yu
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Xiaolin Liang
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Jiyou Yao
- Department of HBP Surgery II, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Yanfang Fu
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Xu He
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Xiaoling Ren
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Jiajia Chen
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Xuejuan Li
- Shenzhen Children’s Hospital of China Medical University, Shenzhen, Guangdong, China
| | - Minqiang Lu
- Department of HBP Surgery II, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Tian Lan
- Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
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10
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Parekh PY, Patel VI, Khimani MR, Bahadur P. Self-assembly of bile salts and their mixed aggregates as building blocks for smart aggregates. Adv Colloid Interface Sci 2023; 312:102846. [PMID: 36736167 DOI: 10.1016/j.cis.2023.102846] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 01/11/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023]
Abstract
The present communication offers a comprehensive overview of the self-assembly of bile salts emphasizing their mixed smart aggregates with a variety of amphiphiles. Using an updated literature survey, we have explored the dissimilar interactions of bile salts with different types of surfactants, phospholipids, ionic liquids, drugs, and a variety of natural and synthetic polymers. While assembling this review, special attention was also provided to the potency of bile salts to alter the size/shape of aggregates formed by several amphiphiles to use these aggregates for solubility improvement of medicinally important compounds, active pharmaceutical ingredients, and also to develop their smart delivery vehicles. A fundamental understanding of bile salt mixed aggregates will enable the development of new strategies for improving the bioavailability of drugs solubilized in newly developed potential hosts and to formulate smart aggregates of desired morphology for specific targeted applications. It enriches our existing knowledge of the distinct interactions exerted in mixed systems of bile salts with variety of amphiphiles. By virtue of this, researchers can get innovative ideas to construct novel nanoaggregates from bile salts by incorporating various amphiphiles that serve as a building block for smart aggregates for their numerous industrial applications.
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Affiliation(s)
- Paresh Y Parekh
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
| | - Vijay I Patel
- Department of Chemistry, Navyug Science College, Rander Road, Surat 395009, Gujarat, India.
| | - Mehul R Khimani
- Countryside International School, Nr. Bhesan Railway Crossing, CIS Barbodhan Road, Surat 394125, Gujarat, India
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, Gujarat, India
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11
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Determination of β-blocking receptor drugs in silica gel TLC systems with the mobile phase containing surfactant. CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2022. [DOI: 10.2478/cipms-2022-0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Abstract
Eight drugs blocking beta-adrenergic receptors activity (acebutolol, alprenolol, atenolol, oxprenolol, labetalol, metoprolol, propranolol and sotalol) were investigated through the use of the thin-layer technique with its mobile phase containing surfactant. Assessment of the effect of surfactant presence and 1-propanol concentration in the mobile phase on the retention and separation of investigated solutes was then carried out wherein the effect of the surfactant concentration on the zone shape properties (asymmetry and tailing coefficient) was investigated. The method was applied for the quantitative analysis of the chosen solutes, and the LOD and LOQ values of chosen were determined. These were as follows: acebutolol – 1.11 and 3.36 μg/spot, metoprolol 1.45 μg/spot, 4.4 μg/spot. The chosen system is environmentally friendly due to using silica gel plates and only 5% of propanol in water.
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12
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Kumari S, Chauhan S, Umar A, Fouad H, Akhtar MS. Conductometric and Fluorescence Probe Analysis to Investigate the Interaction between Bioactive Peptide and Bile Salts: A Micellar State Study. Molecules 2022; 27:7561. [PMID: 36364390 PMCID: PMC9654833 DOI: 10.3390/molecules27217561] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 10/30/2022] [Accepted: 10/31/2022] [Indexed: 09/29/2023] Open
Abstract
The present work deals with the micellar state study of sodium cholate and sodium deoxycholate in the aqueous solution of a bioactive peptide, namely glycyl dipeptide, having different concentrations through conductivity and fluorescence methods at different temperatures. The data obtained from conductivity is plotted against the concentration of Bile salts, and CMC (critical micelle concentration) values are calculated. The results realized have been elucidated with reference to Glycyl dipeptide-bile salts hydrophobic/hydrophilic interactions existing in solution. In addition, the CMC values converted to mole fraction (Xcmc) values have been used to evaluate the standard thermodynamic factors of micellization viz., enthalpy H, free energy ΔGm0, and entropy (ΔSm0) which extract information regarding thermodynamic feasibility of micellar state, energy alteration, and the assorted interactions established in the existing (bile salts-water-glycyl dipeptide) system. Furthermore, the pyrene fluorescence spectrum has also been utilized to study the change in micro polarity induced by the interactions of bile salts with glycyl dipeptide and the aggregation action of bile salts. The decrease in modification in the ratio of intensities of first and third peaks i.e., (I1/I3) for the pyrene molecules in aqueous bile salts solution by the addition of dipeptide, demonstrates that the micelle polarity is affected by glycyl dipeptide. This ratio has also been utilized to determine CMC values for the studied system, and the results have been found to be in good correlation with observations made in conductivity studies.
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Affiliation(s)
- Santosh Kumari
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| | - Suvarcha Chauhan
- Department of Chemistry, Himachal Pradesh University, Summer Hill, Shimla 171005, India
| | - Ahmad Umar
- Department of Chemistry, College of Science and Arts, Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - Hassan Fouad
- Applied Medical Science Department, Community College, King Saud University, Riyadh 11433, Saudi Arabia
| | - Mohammad Shaheer Akhtar
- School of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Korea
- Graduate School of Integrated Energy-AI, Jeonbuk National University, Jeonju 54896, Korea
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13
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Chakrabarti C, Malek N, Ray D, Aswal VK, Pillai SA. A meticulous study on the interaction of bile salts with star block copolymeric micelles. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Behera SK, Mohapatra M. Exploring the interaction of dietary fiber hydroxypropyl methylcellulose and biosurfactant sodium deoxycholate. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05025-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Photophysical Behaviour of Novel Quaternary Pyrenoyl Salts and Their Sensitivity Towards Bile Salt Micellization. J Fluoresc 2022; 32:1557-1563. [PMID: 35553318 DOI: 10.1007/s10895-022-02955-w] [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: 02/02/2022] [Accepted: 04/11/2022] [Indexed: 10/18/2022]
Abstract
The present work describes the synthesis and characterization of pyrene derivatives, N-(1-Pyrenoylmethyl) pyridinium bromide (PM-PB) and N-(1-Pyrenoylmethyl)-N,N,N-triethylammonium bromide (PM-TAB). The photophysical behavior of these molecules has been studied in various protic and aprotic solvents. Using steady state fluorescence intensity, fluorescence anisotropy and dynamic fluorescence lifetime studies, the sensitivity of these molecules towards the micellization process of bile salts has been monitored. These derivatives have been effectively used in estimating critical micellar concentration (CMC) of bile salt, sodium deoxycholate (NaDC).
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16
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Sahu AK, Mishra AK. Curcumin-Induced Membrane Property Changes in DMPC Multilamellar Vesicles and the Effects of Membrane-Destabilizing Molecules on Curcumin-Loaded Multilamellar Vesicles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12753-12766. [PMID: 34694126 DOI: 10.1021/acs.langmuir.1c02407] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Curcumin (CUR) is the major bioactive component of turmeric (Curcuma longa), commonly used as a spice and traditional medicine in India. CUR possesses a wide range of pharmacological benefits, including antioxidant, anticarcinogenic, antimutagenic, anti-inflammatory, anti-Alzheimer, and anti-Parkinson effects. The CUR-membrane interaction is believed to be the reason for such biological activity of CUR. Several research groups have modeled the interaction of CUR with artificial model lipid membranes using various techniques such as nuclear magnetic resonance (NMR), small-angle X-ray scattering (SAXS), and differential scanning calorimetry (DSC). However, the mechanism of its action is still unclear. A fluorescent-probe-based technique could be advantageous to study the CUR-lipid membrane interaction due to its sensitivity toward the local environment and its multiparametric nature. In this work, we have used the intrinsic fluorescence properties of CUR to investigate CUR-induced physical property changes in 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) multilamellar vesicles (MLVs) at various CUR concentrations. By rationalizing the results of steady-state fluorescence intensity, fluorescence anisotropy, temperature-dependent fluorescence intensity, temperature-dependent fluorescence anisotropy, and quenching experiments, we have proposed a model showing concentration-dependent effects of CUR on the DMPC bilayer membrane. We suggest that at low concentrations (≤1 mol %), CUR is homogeneously distributed in the DMPC bilayer membrane in both the solid gel (SG) and liquid crystalline (LC) phases. At high concentrations (>1 mol %), CUR molecules form segregated domains that fluidize both membrane phases. However, the CUR-induced fluidization is less pronounced in the LC phase as some CUR molecules from the domain partition into the bilayer core. Further, the effects of membrane-destabilizing molecules such as bile salts, capsaicin (CAP), and piperine (PIP) on CUR-loaded DMPC multilamellar vesicles were studied. Our work also shows that CUR has a stabilizing effect on the DMPC membrane at high concentrations.
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Affiliation(s)
- Anand Kumar Sahu
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Ashok Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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Dening TJ, Douglas JT, Hageman MJ. Do Macrocyclic Peptide Drugs Interact with Bile Salts under Simulated Gastrointestinal Conditions? Mol Pharm 2021; 18:3086-3098. [PMID: 34255531 DOI: 10.1021/acs.molpharmaceut.1c00309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Peptide drugs face several barriers to oral delivery, including enzymatic degradation in the gastrointestinal tract and low membrane permeability. Importantly, the direct interaction between various biorelevant colloids (i.e., bile salt micelles and bile salt-phospholipid mixed micelles) present in the aqueous gastrointestinal environment and peptide drug molecules has not been studied. In this work, we systematically characterized interactions between a water-soluble model peptide drug, octreotide, and a range of physiologically relevant bile salts in solution. Octreotide membrane flux in pure bile salt solutions and commercially available biorelevant media, i.e., fasted state simulated intestinal fluid (FaSSIF) and fed state simulated intestinal fluid (FeSSIF), was evaluated using a side-by-side diffusion cell equipped with a cellulose dialysis membrane. All seven micellar bile salt solutions as well as FaSSIF and FeSSIF decreased octreotide membrane flux, and dihydroxy bile salts were found to have a much larger effect than trihydroxy bile salts. An inverse relationship between octreotide membrane flux and pancreatic enzymatic stability was also observed; bile salt micelles and bile salt-phospholipid mixed micelles provided a protective effect toward enzymatic degradation and prolonged octreotide half-life in vitro. Diffusion ordered nuclear magnetic resonance (DOSY NMR) spectroscopy and dynamic light scattering (DLS) were used as complementary experimental techniques to confirm peptide-micelle interactions in solution. Experiments were also performed using desmopressin as a second model peptide drug; desmopressin interacted with bile salts in solution, albeit to a lower extent relative to octreotide. The findings described herein demonstrate that amphiphilic, water-soluble peptide drugs do interact with bile salts and phospholipids in solution, with an effect on peptide membrane flux and enzymatic stability. Correspondingly, oral peptide drug absorption and bioavailability may be impacted.
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Affiliation(s)
- Tahnee J Dening
- Department of Pharmaceutical Chemistry, School of Pharmacy, The University of Kansas, 2093 Constant Avenue, Lawrence, Kansas 66047, United States
| | - Justin T Douglas
- Nuclear Magnetic Resonance Core Laboratory, The University of Kansas, Lawrence, Kansas 66047, United States
| | - Michael J Hageman
- Department of Pharmaceutical Chemistry, School of Pharmacy, The University of Kansas, 2093 Constant Avenue, Lawrence, Kansas 66047, United States
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18
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Unravelling the aggregation behaviour and micellar properties of CHAPS (3-[(3-cholamidopropyl)-dimethylamino]-1-propanesulfonate), a zwitterionic derivative of cholic acid, using Coumarin 1 photophysics. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Pawar G, Papadatou-Soulou E, Mason J, Muhammed R, Watson A, Cotter C, Abdallah M, Harrad S, Mackie C, Arien T, Inghelbrecht S, Batchelor H. Characterisation of fasted state gastric and intestinal fluids collected from children. Eur J Pharm Biopharm 2020; 158:156-165. [PMID: 33259897 DOI: 10.1016/j.ejpb.2020.11.010] [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: 09/17/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
Fundamental knowledge about the composition of intestinal fluids in paediatric populations is currently unavailable. This study aimed to characterise gastric and intestinal fluid from paediatric populations. Gastric and intestinal fluid samples were obtained during routine clinical endoscopy from paediatric patients at a large teaching hospital. These fluids were characterised to measure the pH; buffer capacity; osmolality; bile acid concentration and composition. A total of 55 children were recruited to the study aged from 11 months to 15 years of age where 53 gastric fluid samples and 40 intestinal fluid samples were obtained. pH values recorded ranged from pH 0.57 to 11.05 (median: 2.50) in gastric fluids and from 0.89 to 8.97 (median: 3.27) in intestinal fluids. The buffer capacity did not change significantly between gastric and intestinal fluids with median values of 12 mM/L/ΔpH for both fluids. Gastric fluid osmolality values ranged from 1 to 615 mOsm/kg, while intestinal fluid values ranged from 35 to 631 mOsm/kg. Gastric fluid bile acid concentrations ranged from 0.002 to 2.3 mM with a median value of 0.017 mM whilst intestinal fluid bile acid concentrations ranged from 0.0008 to 3.3 mM with a median value of 0.178 mM. Glycocholate; taurocholic acid; glycochenodeoxycholate and taurochenodeoxycholate were the most commonly identified bile acids within paediatric intestinal fluids. All compositional components were associated with large inter-individual variability. Further work is required to develop simulated paediatric media and to explore the impact of these media on drug solubility and dissolution.
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Affiliation(s)
- Gopal Pawar
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston B15 2TT, United Kingdom
| | - Eleni Papadatou-Soulou
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston B15 2TT, United Kingdom
| | - Julie Mason
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston B15 2TT, United Kingdom
| | - Rafeeq Muhammed
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - Alison Watson
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - Catherine Cotter
- Birmingham Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, United Kingdom
| | - Mohamed Abdallah
- School of Geography, Earth, and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom; Department of Analytical Chemistry, Faculty of Pharmacy, Assiut University, 71526 Assiut, Egypt
| | - Stuart Harrad
- School of Geography, Earth, and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Claire Mackie
- Janssen Research and Development, Turnhoutseweg 34, 2340 Beerse, Belgium
| | - Tina Arien
- Janssen Research and Development, Turnhoutseweg 34, 2340 Beerse, Belgium
| | | | - Hannah Batchelor
- School of Pharmacy, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston B15 2TT, United Kingdom; Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom.
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20
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Das S, Patra N, Banerjee A, Das B, Ghosh S. Studies on the self-aggregation, interfacial and thermodynamic properties of a surface active imidazolium-based ionic liquid in aqueous solution: Effects of salt and temperature. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114497] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Microencapsulation of Coenzyme Q10 and bile acids using ionic gelation vibrational jet flow technology for oral delivery. Ther Deliv 2020; 11:791-805. [PMID: 33225829 DOI: 10.4155/tde-2020-0082] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Developing new delivery dosage forms with robust delivery and safety profiles remains a challenge to the pharmaceutical industry in terms of optimum gut absorption, consistent dosing and bioavailability; particularly for orally administered drugs that are poorly water soluble. Coenzyme Q10 is an example of a poorly water-soluble compound with low bioavailability, and significant inter-individual variation after oral administration; limiting its optimum efficacy, as a powerful antioxidant with significant promise in treating hearing disorders. Microencapsulation technology is one way to optimize drug bioavailability and absorption profile. One example is Ionic Gelation Vibrational Jet Flow techniques, using new encapsulating parameters to determine the nature of formed capsules. Bile acids are an example of an excipient that can be used to improve membrane permeability; and will be examined. This review addresses the applications of microencapsulation technology on oral delivery and efficacy profiles of poorly water-soluble drugs, focusing on Coenzyme Q10.
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22
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Singh K, Chauhan S. Temperature dependent micellar behaviour of sodium cholate and sodium deoxycholate in the presence of ceftriaxone sodium: A physicochemical study. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Singh K, Chauhan S. Study on aggregation properties and interactive nature of bile salts in the presence of drugs: a comparative approach. Chem Ind 2020. [DOI: 10.1080/00194506.2020.1820911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Kuldeep Singh
- Department of Chemistry, Himachal Pradesh University, Shimla, India
| | - Suvarcha Chauhan
- Department of Chemistry, Himachal Pradesh University, Shimla, India
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24
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Sundralingam U, Muniyandy S, Radhakrishnan AK, Palanisamy UD. Ratite oils for local transdermal therapy of 4-OH tamoxifen: development, characterization, and ex vivo evaluation. J Liposome Res 2020; 31:217-229. [PMID: 32648792 DOI: 10.1080/08982104.2020.1777155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The anti-inflammatory property of ratite oils as well as its ability to act as a penetration enhancer makes it an ideal agent to be used in transdermal formulations. The present study aims to develop an effective transfersomal delivery of 4-hydroxytamoxifen (4-OHT), an anti-cancer drug, using ratite oil as a carrier agent for the treatment of breast cancer (BC). The 4-OHT transfersomes were prepared with and without ratite oils using soy phosphatidylcholine and three different edge activators (EAs) in five different molar ratios using the rotary evaporation-ultrasonication method. Optimal transfersome formulations were selected using physical-chemical characterization and ex vivo studies. Results from physical-chemical characterization of the developed formulations found sodium taurocholate to be the most suitable EA, which recorded highest entrapment efficiency of 95.1 ± 2.70% with 85:15, (w/w) and lowest vesicle size of 82.3 ± 0.02 nm with 75:25, (w/w) molar ratios. TEM and DSC studies showed that the vesicles were readily identified and present in a nearly perfect spherical shape. In addition, formulations with emu oil had better stability than formulations with ostrich oil. Physical stability studies at 4 °C showed that ratite oil transfersomes were stable up to 4 weeks, while transfersomes without ratite oils were stable for 8 weeks. Ex vivo permeability studies using porcine skin concluded that 4-OHT transfersomal formulations with (85:15, w/w) without emu oil have the potential to be used in transdermal delivery approach to enhance permeation of 4-OHT, which may be beneficial in the treatment of BC.
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Affiliation(s)
- Usha Sundralingam
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Subang Jaya, Malaysia
| | | | - Ammu K Radhakrishnan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Subang Jaya, Malaysia
| | - Uma D Palanisamy
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Jalan Lagoon Selatan, Subang Jaya, Malaysia
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25
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Gupta R, Kumar A. Transfersomes: The Ultra-Deformable Carrier System for Non-Invasive Delivery of Drug. Curr Drug Deliv 2020; 18:408-420. [PMID: 32753015 DOI: 10.2174/1567201817666200804105416] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/11/2020] [Accepted: 04/18/2020] [Indexed: 11/22/2022]
Abstract
Vesicular systems have many advantages like prolonging the existence of the drug in the systemic circulation, minimizing the undesirable side-effects and helping the active moieties to reach their target sites using the carriers. However, the main drawback related to transdermal delivery is to cross stratum corneum, which can be overcome by the utilization of novel carrier systems e.g., transfersomes, which are ultra-deformable carrier systems composed of phospholipid (phosphatidylcholine) and edge activators (surfactants). Edge activators are responsible for the flexibility of the bilayer membranes of transfersomes. Different edge activators used in transfersomes include tween, span, bile salts (sodium cholate and sodium deoxycholate) and dipotassium glycyrrhizinate. These activators decrease the interfacial tension, thereby, increasing the deformability of the carrier system. Transfersomes can encapsulate both hydrophilic and hydrophobic drugs into a vesicular structure, which consists of one or more concentric bilayers. Due to the elastic nature of transfersomes, they can easily cross the natural physiological barriers i.e., skin and deliver the drug to its active site. The main benefit of using transfersomes as a carrier is the delivery of macromolecules through the skin by non-invasive route thereby increasing the patient's compliance. The transfersomal formulations can be used in the treatment of ocular diseases, alopecia, vulvovaginal candidiasis, osteoporosis, atopic dermatitis, tumor, leishmaniasis. It is also used in the delivery of growth hormones, anaesthesia, insulin, proteins, and herbal drugs. This review also focuses on the patents and clinical studies for various transfersomal products.
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Affiliation(s)
- Ritika Gupta
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Uttar Pradesh, 201310, India
| | - Amrish Kumar
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Uttar Pradesh, 201310, India
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26
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Singh A, Pati AK, Mishra AK. Photophysics and photoreactivity of cross-conjugated enediynyl aggregates: Applications to multi-parametric sensing of microheterogeneity and reversible fluorescence switching. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2019.110579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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27
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Mishra J, Mishra AK. Significant bile salt induced perturbation of niosome membrane: A molecular level interaction study using 1-Naphthol fluorescence. Colloids Surf B Biointerfaces 2020; 185:110594. [PMID: 31715455 DOI: 10.1016/j.colsurfb.2019.110594] [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: 07/26/2019] [Revised: 10/06/2019] [Accepted: 10/15/2019] [Indexed: 11/26/2022]
Abstract
This study demonstrates that significant perturbation of tween20:cholesterol(1:1) niosome membrane takes place even at premicellar concentration of bile salts. Here, 1-naphthol (1-NpOH), a known and sensitive excited state proton transfer (ESPT) probe, was used to understand the nature of perturbation of the membrane in an unbuffered medium. The significant decrease in 1-NpOH fluorescence intensity in niosome-bile salt mixed system at both lower (10 °C) and higher (50 °C) temperatures indicates the bile salts [sodium cholate (NaC) and sodium deoxycholate (NaDC)] induce perturbation of niosome membranes. Variations in the fluorescence lifetime values of both the prototropic emissions (neutral and anionic species) along with the proton transfer rate of 1-NpOH confirm the bile salts perturb up to the hydrophobic core domain of the niosomal membranes. Bile salts induce size change of the niosomal membrane is confirmed through dynamic light scattering study.
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Affiliation(s)
- Jhili Mishra
- Department of Chemistry Indian Institute of Technology Madras, India
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28
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Mishra SS, Mohanty S, Mishra J, Subuddhi U. Photophysical Properties of Coumarin 1 in Bile Salt Aggregates: An Insight into the Role of Bile Salt Structure on the Aggregation Behavior. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:16555-16567. [PMID: 31742410 DOI: 10.1021/acs.langmuir.9b02664] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The photophysical behavior of Coumarin 1 (Cou1), a well-known 7-aminocoumarin derivative, is very sensitive to the microenvironment in which it resides. In the present study, the effect of six bile salt variants on the photophysical behavior of Cou1 has been investigated. Dihydroxy (deoxycholates) as well as trihydroxy (cholates) bile salts with conjugated and unconjugated side chains have been chosen to get insight into the role of bile salt structure on the microenvironment of Cou1. Cou1 photophysics was found to be extremely sensitive to the aggregation process of the bile salt variants. The reduced polarity of the micellar environment stabilizes the planar intramolecular charge transferred state of Cou1, resulting in significant modulation in its photophysics in the bile salt media. The changes in the fluorescence parameters such as fluorescence intensity, emission energy, fluorescence quantum yield, anisotropy, and lifetime of Cou1 reveal that there is a distinct difference in the aggregation behavior of deoxycholates from that of cholates. The deoxycholates form micelles more or less critically similar to those of conventional surfactants, whereas the cholates self-assemble rather noncritically over a wide concentration range, thus signifying the vital role of the extra hydroxyl group in the aggregation pattern of trihydroxy bile salts. The conjugated bile salts are found to provide a relatively more compact, rigid, and hydrophobic microenvironment to Cou1 as compared to their unconjugated counterparts. Considering the significant modulation in the photophysical properties of Cou1, it has been employed as a molecular reporter for monitoring the aggregation process of bile salt variants and important information could be obtained about the effect of bile salt structure on the aggregation pattern and also about the micellar properties.
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Affiliation(s)
- Smruti Snigdha Mishra
- Department of Chemistry , National Institute of Technology , Rourkela , 769008 Odisha , India
| | - Subhrajit Mohanty
- Department of Chemistry , National Institute of Technology , Rourkela , 769008 Odisha , India
| | - Jhili Mishra
- Department of Chemistry , Indian Institute of Technology , Madras , Chennai 600036 , India
| | - Usharani Subuddhi
- Department of Chemistry , National Institute of Technology , Rourkela , 769008 Odisha , India
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29
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Banipal PK, Sohal P, Banipal TS. Physicochemical and spectral evaluation of the interactional behavior of nicotinic acid (vitamin B3) with mixed [sodium deoxycholate (bile salt) + cetyltrimethylammonium bromide] surfactants. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1699426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Pallavi Sohal
- Department of Chemistry, Guru Nanak Dev University, Amritsar, India
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30
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Swain J, Mishra J, Ghosh G, Mishra AK. Quantification of micropolarity and microviscosity of aggregation and salt-induced gelation of sodium deoxycholate (NaDC) using Nile red fluorescence. Photochem Photobiol Sci 2019; 18:2773-2781. [DOI: 10.1039/c9pp00293f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Nile red fluorescence properties can be used for the estimation of micropolarity and microviscosity of the gel medium.
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Affiliation(s)
- Jitendriya Swain
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600 036
- India
| | - Jhili Mishra
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600 036
- India
| | - Goutam Ghosh
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600 036
- India
| | - Ashok Kumar Mishra
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600 036
- India
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31
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Ibatullina MR, Zhil’tsova EP, Lukashenko SS, Voloshina AD, Sapunova AS, Lenina OA, Nizameev IR, Kutyreva MP, Zakharova LY. Metallomicellar Systems Based on the Complexes of 1-Hexadecyl-4-aza-1-azoniabicyclo[2.2.2]octane Bromide with Transition Metal Nitrates. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s107036321811018x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Chauhan S, Sharma V, Singh K, Chauhan M. Effect of Maltodextrin and Temperature on Micellar Behavior of Bile Salts in Aqueous Medium: Conductometric and Spectrofluorimetric Studies. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2017-1060] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Conductivity and fluorescence probe techniques have been employed to study the micellar behavior of bile salts i.e. sodium cholate (1–20 mmol⋅kg−1) and sodium deoxycholate (0.5–10.0 mmol⋅kg−1) in aqueous solutions of maltodextrin (0.0, 0.5, 1.1, and 1.6 mmol⋅kg−1) at different temperatures. The influence of maltodextrin on the micellization behavior of bile salts has been determined in terms of critical micelle concentration (CMC) values obtained from conductivity measurement. The variation in CMC values has been discussed by considering the alteration in the hydrophobic environment of maltodextrin-sodium cholate/sodium deoxycholate complex imparted by the carbohydrate molecules. In order to substantiate the CMC values determined from conductivity method, the fluorescence probe study of aqueous sodium cholate and sodium deoxycholate solutions in presence of fluorescent, pyrene has also been carried. The CMC values obtained from both techniques are in full agreement with each other. Moreover, application of charged pseudo-phase separation model has been made to discuss the thermodynamics of the system.
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Affiliation(s)
- Suvarcha Chauhan
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India , Tel.: +91 177 2830803, fax: +91 177 2830775
| | - Vivek Sharma
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India
| | - Kuldeep Singh
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India
| | - M.S. Chauhan
- Department of Chemistry , Himachal Pradesh University , Summer Hill, Shimla 171005 , India
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33
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Alok KT. Interaction of fatty acid-containing 9-aminoacridine derivative with surfactants and bio-surfactants: Synthesis and photophysical studies. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Chauhan S, Singh K, Sundaresan C. Physico-chemical characterization of drug–bio-surfactant micellar system: A road for developing better pharmaceutical formulations. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Priotti J, Leonardi D, Pico G, Lamas MC. Application of Fluorescence Emission for Characterization of Albendazole and Ricobendazole Micellar Systems: Elucidation of the Molecular Mechanism of Drug Solubilization Process. AAPS PharmSciTech 2018; 19:1152-1159. [PMID: 29218582 DOI: 10.1208/s12249-017-0927-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 11/25/2017] [Indexed: 11/30/2022] Open
Abstract
Albendazole (ABZ) and ricobendazole (RBZ) are referred to as class II compounds in the Biopharmaceutical Classification System. These drugs exhibit poor solubility, which profoundly affects their oral bioavailability. Micellar systems are excellent pharmaceutical tools to enhance solubilization and absorption of poorly soluble compounds. Polysorbate 80 (P80), poloxamer 407 (P407), sodium cholate (Na-C), and sodium deoxycholate (Na-DC) have been selected as surfactants to study the solubilization process of these drugs. Fluorescence emission was applied in order to obtain surfactant/fluorophore (S/F) ratio, critical micellar concentration, protection efficiency of micelles, and thermodynamic parameters. Systems were characterized by their size and zeta potential. A blue shift from 350 to 345 nm was observed when ABZ was included in P80, Na-DC, and Na-C micelles, while RBZ showed a slight change in the fluorescence band. P80 showed a significant solubilization capacity: S/F values were 688 for ABZ at pH 4 and 656 for RBZ at pH 6. Additionally, P80 micellar systems presented the smallest size (10 nm) and their size was not affected by pH change. S/F ratio for bile salts was tenfold higher than for the other surfactants. Quenching plots were linear and their constant values (2.17/M for ABZ and 2.29/M for RBZ) decreased with the addition of the surfactants, indicating a protective effect of the micelles. Na-DC showed better protective efficacy for ABZ and RBZ than the other surfactants (constant values 0.54 and 1.57/M, respectively), showing the drug inclusion into the micelles. Entropic parameters were negative in agreement with micelle formation.
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Patel V, Ray D, Bahadur A, Ma J, Aswal VK, Bahadur P. Pluronic ®-bile salt mixed micelles. Colloids Surf B Biointerfaces 2018; 166:119-126. [PMID: 29554645 DOI: 10.1016/j.colsurfb.2018.03.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/21/2018] [Accepted: 03/01/2018] [Indexed: 11/28/2022]
Abstract
The present study was aimed to examine the interaction of two bile salts viz. sodium cholate (NaC) and sodium deoxycholate (NaDC) with three ethylene polyoxide-polypropylene polyoxide (PEO-PPO-PEO) triblock copolymers with similar PPO but varying PEO micelles with a focus on the effect of pH on mixed micelles. Mixed micelles of moderately hydrophobic Pluronic® P123 were examined in the presence of two bile salts and compared with those from very hydrophobic L121 and very hydrophilic F127. Both the bile salts increase the cloud point (CP) of copolymer solution and decreased apparent micelle hydrodynamic diameter (Dh). SANS study revealed that P123 forms small spherical micelles showing a decrease in size on progressive addition of bile salts. The negatively charged mixed micelles contained fewer P123 molecules but progressively rich in bile salt. NaDC being more hydrophobic displays more pronounced effect than NaC. Interestingly, NaC shows micellar growth in acidic media which has been attributed to the formation of bile acids by protonation of carboxylate ion and subsequent solubilization. In contrast, NaDC showed phase separation at higher concentration. Nuclear Overhauser effect spectroscopy (NOESY) experiments provided information on interaction and location of bile salts in micelles. Results are discussed in terms of hydrophobicity of bile salts and Pluronics® and the site of bile salt in polymer micelles. Proposed molecular interactions are useful to understand more about bile salts which play important role in physiological processes.
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Affiliation(s)
- Vijay Patel
- Department of Chemistry, Jamanaben Narottambhai Motiram Patel Science College, Bharthana (Vesu), Surat, 395017, India.
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
| | - Anita Bahadur
- Department of Zoology, Sir P.T. Sarvajanik College of Science, Surat, 395001, India.
| | - Junhe Ma
- Department of Chemistry, Ashland Incorporation, Wilmington, DE 19808, USA.
| | - V K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, 400085, India.
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, 395007, India.
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Zhang X, Wu Y, Zhang M, Mao J, Wu Y, Zhang Y, Yao J, Xu C, Guo W, Yu B. Sodium cholate-enhanced polymeric micelle system for tumor-targeting delivery of paclitaxel. Int J Nanomedicine 2017; 12:8779-8799. [PMID: 29263668 PMCID: PMC5732553 DOI: 10.2147/ijn.s150196] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Polymeric micelles are attractive nanocarriers for tumor-targeted delivery of paclitaxel (PTX). High antitumor efficacy and low toxicity require that PTX mainly accumulated in tumors with little drug exposure to normal tissues. However, many PTX-loaded micelle formulations suffer from low stability, fast drug release, and lack of tumor-targeting capability in the circulation. To overcome these challenges, we developed a micellar formulation that consists of sodium cholate (NaC) and monomethoxy poly (ethylene glycol)-block-poly (d,l-lactide) (mPEG-PDLLA). METHODS PTX-loaded NaC-mPEG-PDLLA micelles (PTX-CMs) and PTX-loaded mPEG-PDLLA micelles (PTX-Ms) were formulated, and their characteristics, particle size, surface morphology, release behavior in vitro, pharmacokinetics and in vivo biodistributions were researched. In vitro and in vivo tumor inhibition effects were systematically investigated. Furthermore, the hemolysis and acute toxicity of PTX-CMs were also evaluated. RESULTS The size of PTX-CMs was 53.61±0.75 nm and the ζ-potential was -19.73±0.68 mV. PTX was released much slower from PTX-CMs than PTX-Ms in vitro. Compared with PTX-Ms, the cellular uptake of PTX-CMs was significantly reduced in macrophages and significantly increased in human cancer cells, and therefore, PTX-CMs showed strong growth inhibitory effects on human cancer cells. In vivo, the plasma AUC0-t of PTX-CMs was 1.8-fold higher than that of PTX-Ms, and 5.2-fold higher than that of Taxol. The biodistribution study indicated that more PTX-CMs were accumulated in tumor than PTX-Ms and Taxol. Furthermore, the significant antitumor efficacy of PTX-CMs was observed in mice bearing BEL-7402 hepatocellular carcinoma and A549 lung carcinoma. Results from drug safety assessment studies including acute toxicity and hemolysis test revealed that the PTX-CMs were safe for in vivo applications. CONCLUSION These results strongly revealed that NaC-mPEG-PDLLA micelles can tumor-target delivery of PTX and enhance drug penetration in tumor, suggesting that NaC-mPEG-PDLLA micelles are promising nanocarrier systems for anticancer drugs delivery.
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Affiliation(s)
- Xiaomin Zhang
- Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, Beijing
- Push-Kang Biotechnology, Hangzhou
| | - Yibo Wu
- Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, Beijing
| | - Min Zhang
- Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, Beijing
| | - Jing Mao
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, China
| | - Yun Wu
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, NY, USA
| | | | - Ju Yao
- Push-Kang Biotechnology, Hangzhou
| | - Chang Xu
- Push-Kang Biotechnology, Hangzhou
| | - Wenli Guo
- Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, Beijing
| | - Bo Yu
- Push-Kang Biotechnology, Hangzhou
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Maher S, Mrsny RJ, Brayden DJ. Intestinal permeation enhancers for oral peptide delivery. Adv Drug Deliv Rev 2016; 106:277-319. [PMID: 27320643 DOI: 10.1016/j.addr.2016.06.005] [Citation(s) in RCA: 218] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 06/07/2016] [Accepted: 06/09/2016] [Indexed: 12/15/2022]
Abstract
Intestinal permeation enhancers (PEs) are one of the most widely tested strategies to improve oral delivery of therapeutic peptides. This article assesses the intestinal permeation enhancement action of over 250 PEs that have been tested in intestinal delivery models. In depth analysis of pre-clinical data is presented for PEs as components of proprietary delivery systems that have progressed to clinical trials. Given the importance of co-presentation of sufficiently high concentrations of PE and peptide at the small intestinal epithelium, there is an emphasis on studies where PEs have been formulated with poorly permeable molecules in solid dosage forms and lipoidal dispersions.
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Alenaizi R, Radiman S, Rahman IA, Mohamed F. Zwitterionic betaine transition from micelles to vesicles induced by cholesterol. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.09.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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40
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Molecular level investigation on the interaction of pluronic F127 and human intestinal bile salts using excited state prototropism of 1-naphthol. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 160:61-7. [PMID: 27093000 DOI: 10.1016/j.jphotobiol.2016.03.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 03/11/2016] [Accepted: 03/24/2016] [Indexed: 11/21/2022]
Abstract
Pluronic F127 (PF127), a surfactant polymer is used as a drug delivery system and has been introduced recently in the food research to delay lipid digestion process. In this context study the interaction of this polymer with human intestinal bile salts assumes important. The studies involving interaction of PF127 with human intestinal bile salts sodium taurocholic acid (NaTC) and sodium cholate acid (NaC) by using differential scanning calorimetry (DSC) and 1-naphthol as a fluorescent molecular probe show that the bile salts induce decrease of sol-gel phase transition temperature of the PF127 to lower temperature, from ~21°C to ~18°C. Variation of neutral form fluorescence intensity of 1-naphthol with bile salts in water confirmed efficient micellar aggregation with critical micellar concentration (CMC) values of 12.6mM for NaTC and 12.7mM for NaC. Fluorescence parameters like fluorescence intensity and fluorescence lifetime of the two excited state prototropic forms {neutral form emission (λem=370nm), anion form emission (λem=470nm)} of 1-naphthol suggested that the NaTC (below critical micellar concentration 12mM) and NaC (above critical micellar concentration 12mM) induce appreciable dehydration of the hydrophilic corona as well as core region PF127 hydrogel. The micropolarity of the hydrogel microenvironment decreases with increase in concentration of both the bile salts.
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Solubilization and Interaction Studies of Bile Salts with Surfactants and Drugs: a Review. Appl Biochem Biotechnol 2016; 179:179-201. [PMID: 26781714 DOI: 10.1007/s12010-016-1987-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 01/10/2016] [Indexed: 01/10/2023]
Abstract
In this review, bile salt, bile salt-surfactant, and bile salt-drug interactions and their solubilization studies are mainly focused. Usefulness of bile salts in digestion, absorption, and excretion of various compounds and their rare properties in ordering the shape and size of the micelles owing to the presence of hydrophobic and hydrophilic faces are taken into consideration while compiling this review. Bile salts as potential bio-surfactants to solubilize drugs of interest are also highlighted. This review will give an insight into the selection of drugs in different applications as their properties get modified by interaction with bile salts, thus influencing their solution behavior which, in turn, modifies the phase-forming behavior, microemulsion, and clouding phenomenon, besides solubilization. Finally, their future perspectives are taken into consideration to assess their possible uses as bio-surfactants without side effects to human beings.
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Pillai SA, Patel VI, Ray D, Parikh JK, Aswal VK, Bahadur P. Microstructural micellar transition in bile salt–ionic liquid mixed systems in water: a DLS and SANS study. RSC Adv 2016. [DOI: 10.1039/c6ra22418k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bile salt assisted morphological changes of ionic liquid micelles.
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Affiliation(s)
- Sadafara A. Pillai
- Department of Chemistry
- Veer Narmad South Gujarat University
- Surat-395007
- India
| | - Vijay I. Patel
- Department of Chemistry
- Jamanaben Narottambhai Motiram Patel Science College
- Surat-395007
- India
| | - Debes Ray
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Jigisha K. Parikh
- Department of Chemical Engineering
- Sardar Vallabhbhai National Institute of Technology
- Surat-395007
- India
| | - Vinod K. Aswal
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Pratap Bahadur
- Department of Chemistry
- Veer Narmad South Gujarat University
- Surat-395007
- India
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43
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Padasala S, Patel V, Ray D, Singh K, Aswal VK, Bahadur P. Bile salt assisted morphological changes of cationic gemini surfactant (12-4-12) micelles. RSC Adv 2016. [DOI: 10.1039/c6ra17212a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
pH and concentration dependent growth of gemini surfactant (12-4-12) micelles in the presence of bile salts.
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Affiliation(s)
- Shailesh Padasala
- Department of Chemistry
- Veer Narmad South Gujarat University
- Surat-395007
- India
| | - Vijay Patel
- Department of Chemistry
- Jamanaben Narottambhai Motiram Patel Science College
- Surat-395007
- India
| | - Debes Ray
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Kulbir Singh
- Department of Chemistry
- St. Francis Xavier University
- Canada
| | - Vinod K. Aswal
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai-400085
- India
| | - Pratap Bahadur
- Department of Chemistry
- Veer Narmad South Gujarat University
- Surat-395007
- India
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Ge Y, Zhao Y, Li L. Preparation of sodium cholate-based micelles through non-covalent ıbonding interaction and application as oral delivery systems for paclitaxel. Drug Deliv 2015; 23:2555-2565. [DOI: 10.3109/10717544.2015.1028604] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yanxiu Ge
- Department of Pharmaceutics, School of Pharmacy, Shandong University, Jinan, Shandong Province, China
| | - Yanli Zhao
- Department of Pharmaceutics, School of Pharmacy, Shandong University, Jinan, Shandong Province, China
| | - Lingbing Li
- Department of Pharmaceutics, School of Pharmacy, Shandong University, Jinan, Shandong Province, China
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Patel V, Bharatiya B, Ray D, Aswal V, Bahadur P. Investigations on microstructural changes in pH responsive mixed micelles of Triton X-100 and bile salt. J Colloid Interface Sci 2015; 441:106-12. [DOI: 10.1016/j.jcis.2014.11.027] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 11/07/2014] [Accepted: 11/08/2014] [Indexed: 01/18/2023]
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46
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Palakollu V, Kanvah S. Cholesterol-tethered AIEE fluorogens: formation of self-assembled nanostructures. RSC Adv 2015. [DOI: 10.1039/c5ra04417k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Design and synthesis of cholesterol conjugated chromophores exhibiting intramolecular charge transfer (ICT) and Aggregation Induced Enhanced Emission (AIEE) and their self-assembling behavior is described.
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Affiliation(s)
| | - Sriram Kanvah
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Ahmedabad 382424
- India
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47
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Tripathi AK, Mohapatra M, Mishra AK. Fluorescence of N-acylated dansylamide with a long hydrophobic tail: sensitive response to premicellar aggregation of sodium deoxycholate. Phys Chem Chem Phys 2015; 17:29985-94. [DOI: 10.1039/c5cp04263a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The present work describes the synthesis and photophysical studies of two fluorescent dansylamide derivatives, in which the amine group is acylated by a long hydrophobic chain (a part of a biologically relevant palmitic acid) and by a short hydrophobic tail (a part of acetic acid).
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Affiliation(s)
- Alok Kumar Tripathi
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Monalisa Mohapatra
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Ashok Kumar Mishra
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai 600036
- India
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Mishra SS, Subuddhi U. Spectroscopic investigation of interaction of Nile Blue A, a potent photosensitizer, with bile salts in aqueous medium. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 141:67-75. [DOI: 10.1016/j.jphotobiol.2014.09.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 09/19/2014] [Accepted: 09/23/2014] [Indexed: 10/24/2022]
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49
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Jójárt B, Poša M, Fiser B, Szőri M, Farkaš Z, Viskolcz B. Mixed micelles of sodium cholate and sodium dodecylsulphate 1:1 binary mixture at different temperatures--experimental and theoretical investigations. PLoS One 2014; 9:e102114. [PMID: 25004142 PMCID: PMC4087020 DOI: 10.1371/journal.pone.0102114] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 06/16/2014] [Indexed: 11/18/2022] Open
Abstract
Micellisation process for sodium dodecyl sulphate and sodium cholate in 1∶1 molar ratio was investigated in a combined approach, including several experimental methods and coarse grained molecular dynamics simulation. The critical micelle concentration (cmc) of mixed micelle was determined by spectrofluorimetric and surface tension measurements in the temperature range of 0–50°C and the values obtained agreed with each other within the statistical error of the measurements. In range of 0–25°C the cmc values obtained are temperature independent while cmc values were increased at higher temperature, which can be explained by the intensive motion of the monomers due to increased temperature. The evidence of existing synergistic effect among different constituent units of the micelle is indicated clearly by the interaction parameter (β1,2) calculated from cmc values according to Rubingh. As the results of the conductivity measurements showed the negative surface charges of the SDS-NaCA micelle are not neutralized by counterions. Applying a 10 µs long coarse-grained molecular dynamics simulation for system including 30-30 SDS and CA (with appropriate number of Na+ cations and water molecules) we obtained semi-quantitative agreement with the experimental results. Spontaneous aggregation of the surfactant molecules was obtained and the key steps of the micelle formation are identified: First a stable SDS core was formed and thereafter due to the entering CA molecules the size of the micelle increased and the SDS content decreased. In addition the size distribution and composition as well as the shape and structure of micelles are also discussed.
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Affiliation(s)
- Balázs Jójárt
- Department of Chemical Informatics, Faculty of Education, University of Szeged, Szeged, Hungary
- * E-mail:
| | - Mihalj Poša
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Béla Fiser
- Department of Chemical Informatics, Faculty of Education, University of Szeged, Szeged, Hungary
| | - Milán Szőri
- Department of Chemical Informatics, Faculty of Education, University of Szeged, Szeged, Hungary
| | - Zita Farkaš
- Department of Pharmacy, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Béla Viskolcz
- Department of Chemical Informatics, Faculty of Education, University of Szeged, Szeged, Hungary
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Ćirin D, Poša M, Grbović L, Pavlović K, Vasiljević B. Aggregation Behavior and Micellar Properties of Sodium Salts of Naphthenic Acid Mixtures. J SURFACTANTS DETERG 2014. [DOI: 10.1007/s11743-014-1596-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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