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Han S, Zhang X, Li Z, Cui G, Xue B, Yu Y, Guo J, Zhang H, Yang J, Teng L. A ginsenoside G-Rg3 PEGylated long-circulating liposome for hyperglycemia and insulin resistance therapy in streptozotocin-induced type 2 diabetes mice. Eur J Pharm Biopharm 2024; 201:114350. [PMID: 38848783 DOI: 10.1016/j.ejpb.2024.114350] [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: 01/19/2024] [Revised: 05/21/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024]
Abstract
Ginsenoside (GS), one of the main active components in ginseng, can enhance insulin sensitivity, improve the function of islet β cells, and reduce cell apoptosis in the treatment of diabetes. However, the drawbacks of high lipid solubility, poor water solubility, and low oral availability in Ginsenoside Rg3 (G-Rg3) seriously limit further application of GS. In this work, a G-Rg3 PEGylated long-circulating liposome (PEG-L-Rg3) is designed and developed to improve symptoms in type 2 diabetic mice. The as-prepared PEG-L-Rg3 with a spherical structure shows a particle size of ∼ 140.5 ± 1.4 nm, the zeta potential of -0.10 ± 0.05 mV, and a high encapsulation rate of 99.8 %. Notably, in vivo experimental results demonstrate that PEG-L-Rg3 exhibits efficient ability to improve body weight and food intake in streptozotocin-induced type 2 diabetic mice. Moreover, PEG-L-Rg3 also enhances fasting insulin (FINS) and insulin sensitivity index (ISI). In addition, the glucose tolerance of mice is significantly improved after the treatment of PEG-L-Rg3, indicating that PEG-L-Rg3 can be a potential drug for the treatment of type 2 diabetes, which provides a new way for the treatment of type 2 diabetes using ginsenosides.
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Affiliation(s)
- Songren Han
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Xueyan Zhang
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Ziwei Li
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Guilin Cui
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Beilin Xue
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Yang Yu
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Jiaqing Guo
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Huan Zhang
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
| | - Jie Yang
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
| | - Lesheng Teng
- School of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
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Precipitation of Calcium Phosphates and Calcium Carbonates in the Presence of Differently Charged Liposomes. MINERALS 2022. [DOI: 10.3390/min12020208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Liposomes (lipid vesicles) are often considered to be a versatile tool for the synthesis of advanced materials, as they allow various control mechanisms to tune the materials’ properties. Among diverse materials, the synthesis of calcium phosphates (CaPs) and calcium carbonates (CaCO3) using liposomes has attracted particular attention in the development of novel (bio)materials and biomineralization research. However, the preparation of materials using liposomes has not yet been fully exploited. Most of the liposomes used have been anionic and/or zwitterionic, while data on the influence of cationic liposomes are limited. Therefore, the aim of this study was to investigate and compare the influence of differently charged liposomes on CaPs and CaCO3 formation. Zwitterionic 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC), negatively charged 1,2-dimyristoyl-sn-glycero-3-phospho-L-serine (DMPS), and positively charged 1,2-dioleoyl-sn-glycero-3-ethylphosphocholine (EPC) lipids were used to prepare the respective liposomes. The presence of liposomes during the spontaneous precipitation of CaPs and CaCO3 affected both the precipitation and transformation kinetics, as well as the morphology of the precipitates formed. The most prominent effect was noted for both materials in the presence of DMPS liposomes, as (nano) shell structures were formed in both cases. The obtained results indicate possible strategies to fine-tune the precipitation process of CaPs and CaCO3, which may be of interest for the production of novel materials.
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Earnden L, Marangoni AG, Gregori S, Paschos A, Pensini E. Zein-Bonded Graphene and Biosurfactants Enable the Electrokinetic Clean-Up of Hydrocarbons. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11153-11169. [PMID: 34514802 DOI: 10.1021/acs.langmuir.1c02018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nonaqueous phase liquids (NAPL, e.g., hydrocarbons and chlorinated compounds) are common groundwater pollutants. Electrokinetic remediation of NAPLs uses electric fields to draw them toward electrodes and remove them from groundwater. The treatment requires NAPL mobility. Emulsification increases mobility, but at a risk for downstream receptors. We propose using alkaline aqueous solutions of zein and graphene nanoparticles (GNP) to form conductive materials, which could also act as barriers to control NAPL migration. Alkaline zein-GNP solutions can be injected in the polluted soil and solidified by neutralizing the pH (e.g., with glacial acetic acid, GAA). Shear rheology experiments showed that zein-GNP composites were cohesive, and voltammetry showed that GNP increased electrical conductivity of zein-based materials by 3.5 times. Gas chromatography-mass spectroscopy (GC-MS) demonstrated that the electrokinetic treatment of model sandy aquifers yielded >60% and ∼47% removal of emulsified toluene in freshwater and in salt solutions, respectively (with 30 min treatment using a 10 V differential voltage between a zein-GNP and an aluminum electrode. NaCl was used as model salt contaminant. The conductivity of surfactant solutions was lower in saline water than in freshwater, explaining differences in toluene removal. Toluene-water emulsions were stabilized using the natural surfactants lecithin and saponin. These surfactants acted synergistically in stabilizing emulsions in either freshwater or salt solutions. Lecithin and saponin likely interacted at toluene-water interfaces, as indicated by the morphology, interfacial tension and compressional rigidity of toluene-water interfaces with both components (relative to interfaces of either lecithin or saponin alone). The compressional behavior of interfacial films was well-described by the Marczak model. Electrokinetic treatment of saturated model sandy aquifers also decreased the turbidity of emulsions of water and either tricholoroethylene (TCE, by ∼41%) or diesel (by ∼75%), in the presence of a bacterial biosurfactant. This decrease was used as semiquantitative indicator of NAPL removal from water.
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Affiliation(s)
- Laura Earnden
- University of Guelph, School of Engineering, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
| | - Alejandro G Marangoni
- University of Guelph, Food Science Department, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
| | - Stefano Gregori
- University of Guelph, School of Engineering, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
| | - Athanasios Paschos
- McMaster University, Department of Biology, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
- Mohawk College, School of Engineering and Technology, 135 Fennell Ave W, Hamilton, Ontario L9C 0E5, Canada
| | - Erica Pensini
- University of Guelph, School of Engineering, 50 Stone Road East, Guelph, Ontario N1G 2W1, Canada
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Pyo CE, Song M, Chang JH. Preparation and In Vitro Cytotoxicity Assessments of Spherical Silica-Encapsulated Liposome Particles for Highly Efficient Drug Carriers. ACS APPLIED BIO MATERIALS 2021; 4:1350-1359. [DOI: 10.1021/acsabm.0c01240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chae Eun Pyo
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology (KICET), Chungbuk 28160, South Korea
| | - Min Song
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology (KICET), Chungbuk 28160, South Korea
| | - Jeong Ho Chang
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology (KICET), Chungbuk 28160, South Korea
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Meldrum FC, O'Shaughnessy C. Crystallization in Confinement. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001068. [PMID: 32583495 DOI: 10.1002/adma.202001068] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 05/23/2023]
Abstract
Many crystallization processes of great importance, including frost heave, biomineralization, the synthesis of nanomaterials, and scale formation, occur in small volumes rather than bulk solution. Here, the influence of confinement on crystallization processes is described, drawing together information from fields as diverse as bioinspired mineralization, templating, pharmaceuticals, colloidal crystallization, and geochemistry. Experiments are principally conducted within confining systems that offer well-defined environments, varying from droplets in microfluidic devices, to cylindrical pores in filtration membranes, to nanoporous glasses and carbon nanotubes. Dramatic effects are observed, including a stabilization of metastable polymorphs, a depression of freezing points, and the formation of crystals with preferred orientations, modified morphologies, and even structures not seen in bulk. Confinement is also shown to influence crystallization processes over length scales ranging from the atomic to hundreds of micrometers, and to originate from a wide range of mechanisms. The development of an enhanced understanding of the influence of confinement on crystal nucleation and growth will not only provide superior insight into crystallization processes in many real-world environments, but will also enable this phenomenon to be used to control crystallization in applications including nanomaterial synthesis, heavy metal remediation, and the prevention of weathering.
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Affiliation(s)
- Fiona C Meldrum
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
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Ji X, Tian M, Ma D, Zhu Y, Zhou ZH, Zhang Q, Wang Y. Effects of Calcium Ions on the Solubility and Rheological Behavior of a C22-Tailed Hydroxyl Sulfobetaine Surfactant in Aqueous Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:291-301. [PMID: 29228778 DOI: 10.1021/acs.langmuir.7b03614] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Effects of calcium ions (Ca2+) on the solubility, aggregate structure, and rheological behavior of a C22-tailed zwitterionic surfactant, erucyl dimethyl amidopropyl hydroxyl sulfobetaine (EHSB), have been investigated in aqueous solution. In comparison with sodium ions (Na+), Ca2+ ions exhibit a much higher efficiency in decreasing the Krafft temperature (TK) of EHSB. Specifically, contrary to Na+ ions which have no obvious effect on the rheological properties of the EHSB solution, Ca2+ ions increase the viscosity of the EHSB solution at lower EHSB concentration, and enhance its elasticity at higher EHSB concentration. Moreover, Ca2+ ions raise the temperature needed for the elastic-to-viscous transition of the EHSB solution at higher concentration. At lower EHSB concentration, the hydrophobic interaction between the ultralong hydrocarbon chains induces a tighter packing of the hydrophobic chains by forming a more stretched configuration, while at higher EHSB concentration, the electrostatic attraction between Ca2+ ions and the sulfonate groups of EHSB induces a tighter packing of the headgroups by forming Ca2+-mediated bridges among the EHSB headgroups. Besides, the above interactions may strengthen the hydrogen bonding of OH groups and/or of C═O amide groups, which in turn facilitates the compact packing of the surfactant molecules in aggregates and promotes the growth and entanglement of wormlike micelles. Thus, the EHSB solution shows Ca2+-dependent rheological behaviors. The solubility and rheological properties of the ultralong chain surfactant solution can be simultaneously improved with the addition of divalent Ca2+ ions.
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Affiliation(s)
- Xiuling Ji
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Maozhang Tian
- State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development , Beijing 100083, People's Republic of China
| | - Desheng Ma
- State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development , Beijing 100083, People's Republic of China
| | - Youyi Zhu
- State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development , Beijing 100083, People's Republic of China
| | - Zhao-Hui Zhou
- State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development , Beijing 100083, People's Republic of China
| | - Qun Zhang
- State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development , Beijing 100083, People's Republic of China
| | - Yilin Wang
- Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
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7
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Yu PT, Tsao C, Wang CC, Chang CY, Wang CH, Chan JCC. High-Magnesium Calcite Mesocrystals: Formation in Aqueous Solution under Ambient Conditions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pao-Tao Yu
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
| | - Chieh Tsao
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
| | - Chun-Chieh Wang
- National Synchrotron Radiation Research Center; Hsinchu 30076 Taiwan
| | - Chun-Yu Chang
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
| | - Chia-Hsin Wang
- National Synchrotron Radiation Research Center; Hsinchu 30076 Taiwan
| | - Jerry Chun Chung Chan
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
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8
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Yu PT, Tsao C, Wang CC, Chang CY, Wang CH, Chan JCC. High-Magnesium Calcite Mesocrystals: Formation in Aqueous Solution under Ambient Conditions. Angew Chem Int Ed Engl 2017; 56:16202-16206. [DOI: 10.1002/anie.201708507] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/26/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Pao-Tao Yu
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
| | - Chieh Tsao
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
| | - Chun-Chieh Wang
- National Synchrotron Radiation Research Center; Hsinchu 30076 Taiwan
| | - Chun-Yu Chang
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
| | - Chia-Hsin Wang
- National Synchrotron Radiation Research Center; Hsinchu 30076 Taiwan
| | - Jerry Chun Chung Chan
- Department of Chemistry; National (Taiwan) University; No. 1, Section 4, Roosevelt Road Taipei 10617 Taiwan
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Maeshima K, Yoshimoto M. Preparation and characterization of carbonic anhydrase-conjugated liposomes for catalytic synthesis of calcium carbonate particles. Enzyme Microb Technol 2017; 105:9-17. [PMID: 28756864 DOI: 10.1016/j.enzmictec.2017.06.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 05/15/2017] [Accepted: 06/03/2017] [Indexed: 11/27/2022]
Abstract
The biomimetic approach using immobilized enzymes is useful for the synthesis of structurally defined inorganic materials. In this work, carbonic anhydrase (CA) from bovine erythrocytes was covalently conjugated at 25°C to the liposomes composed of 15mol% 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine-N-(glutaryl) (NG-POPE), and the zwitterionic and anionic phospholipids with the same acyl chains as NG-POPE. For the conjugation, the carboxyl groups of liposomal NG-POPE were activated with 11mM 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and 4.6mM N-hydroxysulfosuccinimide (sulfo-NHS). The carbonic anhydrase-conjugated liposomes (CALs) with the mean hydrodynamic diameter of 149nm showed the esterase activity corresponding to on average 5.5×102 free CA molecules per liposome. On the other hand, the intrinsic fluorescence and absorbance measurements consistently revealed that on average 1.4×103 CA molecules were conjugated to a liposome, suggesting that the molecular orientation of enzyme affected its activity. The formation of calcium carbonate particles was significantly accelerated by the CALs ([lipid]=50μ M) in the 0.3M Tris solution at 10-40°C with dissolved CO2 (≈17mM) and CaCl2 (46mM). The anionic CALs were adsorbed with calcium as revealed with the ζ-potential measurements. The CAL system offered the calcium-rich colloidal interface where the bicarbonate ions were catalytically produced by the liposome-conjugated CA molecules. The CALs also functioned in the external loop airlift bubble column operated with a model flue gas (10vol/vo% CO2), yielding partly agglomerated calcium carbonate particles as observed with the scanning electron microscopy (SEM).
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Affiliation(s)
- Keisuke Maeshima
- Department of Applied Molecular Bioscience, Yamaguchi University, Tokiwadai 2-16-1, Ube 755-8611, Japan
| | - Makoto Yoshimoto
- Department of Applied Molecular Bioscience, Yamaguchi University, Tokiwadai 2-16-1, Ube 755-8611, Japan.
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10
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Can Spherical Vaterite Be Biomimetic Synthesized by Using Histidine-Grafted-Chitosan as an Organic Matrix? J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0549-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Szcześ A. Effect of the enzymatically modified supported dipalmitoylphosphatidylcholine (DPPC) bilayers on calcium carbonate formation. Colloid Polym Sci 2016; 294:409-419. [PMID: 26855469 PMCID: PMC4733140 DOI: 10.1007/s00396-015-3796-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/21/2015] [Accepted: 10/20/2015] [Indexed: 11/25/2022]
Abstract
After an hour contact with a phospholipase A2 (PLA2) solution, only the outer leaflet of the dipalmitoylphosphatidylcholine (DPPC) bilayers supported on mica surface underwent hydrolysis whose products, i.e., palmitic acid and lysophospholipid, accumulated on the bilayer surface. Only calcite was present on the bare mica and enzymatically unmodified and modified supported DPPC bilayers soaked for 2 weeks at 25 and 37 °C in a solution of initial pH equals to 7.4 and 9.2 containing calcium and bicarbonate ions at their concentrations about those of human blood plasma. The DPPC bilayers accelerate the crystal growth at lower pH and favors CaCO3 nucleation at higher pH. Enzymatic modification of bilayers does not affect crystal morphology and its organization on the examined surface but causes a slight crystal size increase at lower pH and significantly reduces crystal size at alkaline pH. The temperature increase leads to the formation of bigger crystals under physiological pH and has almost no effect on crystal size at alkaline pH. The obtained results are probably attributed to Ca2+ interaction with a specific polar site on the surface of the membrane and DPPC hydrolysis products acting as nucleation centers.
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Affiliation(s)
- Aleksandra Szcześ
- Department of Physical Chemistry-Interfacial Phenomena, Faculty of Chemistry, Maria Curie-Skłodowska University, Lublin, 20-031 Poland
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12
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Stratulat I, Britten M, Salmieri S, Fustier P, St-Gelais D, Champagne CP, Lacroix M. Enrichment of cheese with vitamin D3 and vegetable omega-3. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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13
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Tomasini C, Castellucci N, Caputo VC, Milli L, Battistelli G, Fermani S, Falini G. Shaping calcite crystals by customized self-assembling pseudopeptide foldamers. CrystEngComm 2015. [DOI: 10.1039/c4ce01569j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Wu T, Shi H, Ye J. Effect of PLGA/lecithin hybrid microspheres and β-tricalcium phosphate granules on the physicochemical properties, in vitro degradation and biocompatibility of calcium phosphate cement. RSC Adv 2015. [DOI: 10.1039/c5ra06861d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
CPC with beta-TCP granules and PLGA/Lec microspheres reveals better degradability and cell affinity along with proper physicochemical properties.
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Affiliation(s)
- Tingting Wu
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - Haishan Shi
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - Jiandong Ye
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
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15
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Beato C, Fernández MS, Fermani S, Reggi M, Neira-Carrillo A, Rao A, Falini G, Arias JL. Calcium carbonate crystallization in tailored constrained environments. CrystEngComm 2015. [DOI: 10.1039/c5ce00783f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This research shows that by tailoring the assembly of lecithin molecules it is possible to modulate the texture, polymorphism, size and shape of calcium carbonate crystals.
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Affiliation(s)
- C. Beato
- Faculty of Veterinary Sciences
- University of Chile
- Santiago, Chile
| | - M. S. Fernández
- Faculty of Veterinary Sciences
- University of Chile
- Santiago, Chile
| | - S. Fermani
- Department of Chemistry “Giacomo Ciamician”
- Alma Mater Studiorum University of Bologna
- Italy
| | - M. Reggi
- Department of Chemistry “Giacomo Ciamician”
- Alma Mater Studiorum University of Bologna
- Italy
| | | | - A. Rao
- Department of Chemistry
- University of Konstanz
- Constance, Germany
| | - G. Falini
- Department of Chemistry “Giacomo Ciamician”
- Alma Mater Studiorum University of Bologna
- Italy
| | - J. L. Arias
- Faculty of Veterinary Sciences
- University of Chile
- Santiago, Chile
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16
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Huang W, Li X, Shi X, Lai C. Microsphere based scaffolds for bone regenerative applications. Biomater Sci 2014; 2:1145-1153. [DOI: 10.1039/c4bm00161c] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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17
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Yoshimoto M, Koyama T. Sequestration of Carbon Dioxide with Simultaneous Formation of Fine Calcium Carbonate Particles in Liposomes. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Effects of DPPC/Cholesterol liposomes on the properties of freshly precipitated calcium carbonate. Colloids Surf B Biointerfaces 2013; 101:44-8. [DOI: 10.1016/j.colsurfb.2012.06.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 06/14/2012] [Accepted: 06/16/2012] [Indexed: 11/18/2022]
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19
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Perttu EK, Kohli AG, Szoka FC. Inverse-phosphocholine lipids: a remix of a common phospholipid. J Am Chem Soc 2012; 134:4485-8. [PMID: 22364493 DOI: 10.1021/ja210989h] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Zwitterionic inverse-phosphocholine (iPC) lipids contain headgroups with an inverted charge orientation relative to phosphocholine (PC) lipids. The iPC lipid headgroup has a quaternary amine adjacent to the bilayer interface and a phosphate that extends into the aqueous phase. Neutral iPC lipids with ethylated phosphate groups (CPe) and anionic iPC lipids nonethylated phosphate groups (CP) were synthesized. The surface potential of CPe liposomes remains negative across a broad pH range and in the presence of up to 10 mM Ca(2+). CP liposomes aggregate in the presence of Ca(2+), but at a slower rate than other anionic lipids. Hydrolysis of CP lipids by alkaline phosphatases generates a cationic lipid. CPe liposomes release encapsulated anionic carboxyfluorescein (CF) 20 times faster than PC liposomes and release uncharged glucose twice as fast as PC liposomes. As such, iPC lipids afford a unique opportunity to investigate the biophysical and bioactivity-related ramifications of a charge inversion at the bilayer surface.
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Affiliation(s)
- Emily K Perttu
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, California 94143-0912, United States
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Herrera-Robledo M, Arenas C, Morgan-Sagastume JM, Castaño V, Noyola A. Chitosan/albumin/CaCO3 as mimics for membrane bioreactor fouling: genesis of structural mineralized-EPS-building blocks and cake layer compressibility. CHEMOSPHERE 2011; 84:191-198. [PMID: 21600628 DOI: 10.1016/j.chemosphere.2011.04.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 04/20/2011] [Accepted: 04/21/2011] [Indexed: 05/30/2023]
Abstract
Membrane bioreactor biofouling is usually described as an extracellular matrix in which biopolymers, inorganic salts and active microbes co-exist. For that reason, biomineralization (BM) models can be useful to describe the spatial organization and environmental constraints within the referred scenario. BM arguments were utilized as background in order to (1) evaluate CaCO(3) influence on flux decline; pore blocking and cake layer properties (resistance, permeability and compressibility) in a wide range of Chitosan/Bovine serum albumin (BSA) mixtures during step-pressure runs and, (2) perform membrane autopsies in order to explore the genesis of mineralized extracellular building blocks (MEBB) during cake layer build up. Using low molecular weight chitosan (LC) and BSA, 2 L of 5 LC/BSA mixtures (0.25-1.85 ratio) were pumped to an external ultra filtration (UF) membrane (23.5cm(2), hydrophobic, piezoelectric, 100kDa as molecular weight cut-off). Eight different pressure steps (40±7 to 540±21kPa) were applied. Each pressure step was held for 900 s. CaCO(3) was added to LC/BSA mixtures at 0.5, 1.5 and 3mM in order to create MEBB during the filtration tests. Membrane autopsies were performed after the filtration tests using thermo gravimetric, scanning microscopy and specific membrane mass (mgcm(-2)) analyses. Biopolymer-CaCO(3) step-pressure filtration created compressible cake layers (with inner voids). The formation of an internal skeleton of MEBB may contribute to irreversible fouling consolidation. A hypothesis for MEBB genesis and development was set forth.
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Affiliation(s)
- Miguel Herrera-Robledo
- Grupo de Investigación en Procesos Anaerobios, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Apartado Postal 70-472, 04510, Ciudad Universitaria, Coyoacán, México, DF, Mexico.
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Perttu EK, Szoka FC. Zwitterionic sulfobetaine lipids that form vesicles with salt-dependent thermotropic properties. Chem Commun (Camb) 2011; 47:12613-5. [DOI: 10.1039/c1cc15804j] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Donnet M, Aimable A, Lemaître J, Bowen P. Contribution of aggregation to the growth mechanism of seeded calcium carbonate precipitation in the presence of polyacrylic acid. J Phys Chem B 2010; 114:12058-67. [PMID: 20795717 DOI: 10.1021/jp103787p] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Our work investigates the precipitation mechanism of a seeded calcium carbonate reaction, by using cryogenic TEM to observe the early stages of the reaction. The early precipitation of a hydrated phase is proposed as an intermediate phase before transformation into calcite. Thermodynamic modeling in conjunction with pH, surface potential measurements, and colloidal stability modeling demonstrate that calcite growth is dominated by agglomeration. This is in agreement with the cryogenic TEM observations, which suggest oriented attachment dominates early aggregation. The final stage of the reaction is described by a ripening mechanism that is significantly inhibited when high concentrations of polyacrylic acid (PAA) are used. The different concentrations of PAA lead to significant differences in the final particle substructure observed using cross section TEM. At low PAA concentrations, single crystal particles result, coherent with the proposed early oriented attachment mechanism and interfacial energy calculations. A core shell model is proposed for high PAA concentrations, whereas internal ripening of nanosized pores has been observed for low PAA concentrations, suggesting trapped solvent during the rapid initial particle formation at the relatively high supersaturations (S = 30) investigated.
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Affiliation(s)
- Marcel Donnet
- Powder Technology Laboratory (LTP), Swiss Federal Institute of Technology, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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Shi X, Wang Y, Ren L, Lai C, Gong Y, Wang DA. A novel hydrophilic poly(lactide-co-glycolide)/lecithin hybrid microspheres sintered scaffold for bone repair. J Biomed Mater Res A 2010; 92:963-72. [PMID: 19291688 DOI: 10.1002/jbm.a.32423] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Novel 3-D porous scaffolds made of sintered poly(lacide-co-glycolide) (PLGA)/lecithin hybrid microspheres (PLGA/Lec-SMS) were developed and investigated. The addition of lecithin in PLGA bulk successfully managed the desired hydrophilic modification without sacrificing bulk properties. The outcomes were verified with infrared (ATR-FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and contact angle analyses. Specifically, this model of scaffold gained significant improvement in mechanical (mainly compressive) strength upon an optimization of lecithin fractions aligning with sintering conditions. Given a perspective of bone tissue engineering use, human fetal osteoblasts were seeded into a series of these PLGA/Lec-SMS scaffolds upon which key parameters of cytocompatibility and osteoconductivity (including cell viability, alkaline phosphatase activity, calcium secretion, and osteogenic genes expression) were assessed. Osteoblasts seeded on PLGA scaffolds with 5 wt % lecithin demonstrated high cell viability and alkaline phosphatase activity. Moreover, elevated lecithin also enhanced the expression of type I collagen. Taken together, these results suggest PLGA/Lec-SMS are promising scaffolds for bone repair.
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Affiliation(s)
- Xuetao Shi
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
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