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Ogata Y, Kuroiwa T, Ichikawa S. Facilitated encapsulation of a nonionic contrast agent for X-ray computed tomography into lipid vesicles by the multiple emulsification-solvent evaporation method. Colloids Surf B Biointerfaces 2023; 227:113360. [PMID: 37230050 DOI: 10.1016/j.colsurfb.2023.113360] [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: 03/08/2023] [Revised: 05/10/2023] [Accepted: 05/16/2023] [Indexed: 05/27/2023]
Abstract
We studied the encapsulation of iohexol (Ihex), a nonionic contrast agent used for X-ray computational tomography, into lipid vesicles using the multiple emulsification-solvent evaporation method to formulate a nanosized contrast agent. This lipid vesicle preparation method consists of three steps: (1) primary emulsification for producing water-in-oil (W/O) emulsions containing fine water droplets that will be converted to the internal water phase of the lipid vesicles, (2) secondary emulsification for formulating multiple water-in-oil-in-water (W/O/W) emulsions encapsulating the fine water droplets containing Ihex, and (3) solvent evaporation to remove the oil phase solvent (n-hexane) and to form lipid bilayers surrounding the fine inner droplets, resulting in the formation of lipid vesicles encapsulating Ihex. As the diameter and Ihex concentration of the primary W/O emulsion droplets decreased, a higher Ihex encapsulation yield was obtained for the final lipid vesicles. The entrapment yield of Ihex in the final lipid vesicles varied significantly with the emulsifier (Pluronic® F-68) concentration in the external water phase of W/O/W emulsion, and the highest yield (65%) was obtained when the emulsifier concentration was 0.1 wt%. We also investigated the powderization of lipid vesicles encapsulating Ihex via lyophilization. The powderized vesicles were dispersed in water after rehydration and maintained their controlled diameters. The entrapment yield of Ihex in powderized lipid vesicles was maintained for over 1 month at 25 ˚C, while significant leakage of Ihex was observed in the lipid vesicles suspended in the aqueous phase.
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Affiliation(s)
- Yumeto Ogata
- Department of Applied Chemistry, Faculty of Science and Engineering, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo 158-8557, Japan
| | - Takashi Kuroiwa
- Department of Applied Chemistry, Faculty of Science and Engineering, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo 158-8557, Japan.
| | - Sosaku Ichikawa
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
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Su Y, Lu C, Chang C, Li J, Sun Y, Zhang W, Gong L, Gu L, Yang Y. Preparation and characterization of W 1 /O/W 2 emulsions stabilized by glycated and heat-modified egg white proteins. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:5795-5807. [PMID: 35411595 DOI: 10.1002/jsfa.11929] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/03/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Water-in-oil-in-water (W1 /O/W2 ) emulsions stabilized by protein-carbohydrate complexes were prepared from an inner water phase (W1 ), an oil phase (O) and an outer water phase (W2 ). The complexes consisted of heat-induced aggregates (HIAs) of isomalto-oligosaccharide/egg white protein Maillard conjugates. The effects of polyglycerol ester of polyricinoleic acid (PGPR) concentration, HIA concentration, W1 -to-O volume ratio and W1 /O-to-W2 volume ratio on the properties of the W1 /O/W2 emulsions were systematically investigated. RESULTS At sufficiently high PGPR concentrations (>2%), the emulsions possess a high negative charge (≈-44 mV). The encapsulation efficiency of the emulsions, which was determined by incorporating a hydrophilic yellow dye in the inner water phase prior to homogenization, was relatively high (up to 93%) and did not change significantly during 14-day storage at 4 °C. All emulsions were fluids that exhibited shear thinning behavior. CONCLUSION Overall, this study shows that nature-derived emulsifiers can be used to create W1 /O/W2 emulsions suitable for application in the food industry. In addition, we provided a viable strategy to encapsulate water-soluble nutrients. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Yujie Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Cheng Lu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Cuihua Chang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Junhua Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yujia Sun
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wanqiu Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Lin Gong
- Hunan Engineering and Technology Research Center for Food Flavors and Flavorings, Jinshi, China
| | - Luping Gu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Yanjun Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Food Science and Technology, Jiangnan University, Wuxi, China
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Ossai EC, Eze AA, Ogugofor MO. Plant-derived compounds for the treatment of schistosomiasis: Improving efficacy via nano-drug delivery. Niger J Clin Pract 2022; 25:747-764. [DOI: 10.4103/njcp.njcp_1322_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ossai EC, Madueke AC, Amadi BE, Ogugofor MO, Momoh AM, Okpala COR, Anosike CA, Njoku OU. Potential Enhancement of Metformin Hydrochloride in Lipid Vesicles Targeting Therapeutic Efficacy in Diabetic Treatment. Int J Mol Sci 2021; 22:2852. [PMID: 33799652 PMCID: PMC8001634 DOI: 10.3390/ijms22062852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 03/01/2021] [Accepted: 03/09/2021] [Indexed: 12/27/2022] Open
Abstract
The potential enhancement of metformin hydrochloride (MH) loaded in lipid vesicles targeting therapeutic efficacy on alloxan-induced diabetic rats was investigated. This involved lipid vesicles formulated with homogenously distributed nano-sized particles by a novel integrated process of multiple emulsification by membrane and solvent evaporation. The average diameter of the water-in-oil (W1/O), W1/O/W2 emulsion droplets, and lipid vesicles was 192 nm, 52 µm, and 173 nm, respectively. The entrapment yield of metformin hydrochloride (MH) in the prepared lipid vesicles was 40.12%. The metformin hydrochloride-loaded lipid vesicles (MH-LLVs) sustained the release of the entrapped drug over a 12-h period and reduced the plasma glucose level of diabetic rats by 77.4% compared with free MH solution (2-h period and 58.2%, respectively) after one week post-diabetic treatment through oral administration of MH-LLV and the free drug. The remarkable improvement in the biochemical parameters recorded in the MH-LLV-treated animals compared with those that received free MH solutions depicted an enhanced kidney function, liver function, as well as oxidative stress status. Pancreatic histology depicted a pancreas with intralobular ducts (ID) and exocrine secretory acini that characterize an intact pancreas, which suggests the ability of the MH-LLVs to restore pancreatic cells to normal, on a continued treatment. Overall, MH-LLV appears an encouraging extended-release formulation with enhanced bioavailability, sustained release, and improved antihyperglycemic potentials.
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Affiliation(s)
- Emmanuel Chekwube Ossai
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Enugu, Nigeria; (A.C.M.); (B.E.A.); (M.O.O.); (C.A.A.); (O.U.N.)
| | - Augustine Chidi Madueke
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Enugu, Nigeria; (A.C.M.); (B.E.A.); (M.O.O.); (C.A.A.); (O.U.N.)
| | - Benjamin Emenike Amadi
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Enugu, Nigeria; (A.C.M.); (B.E.A.); (M.O.O.); (C.A.A.); (O.U.N.)
| | - Martins Obinna Ogugofor
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Enugu, Nigeria; (A.C.M.); (B.E.A.); (M.O.O.); (C.A.A.); (O.U.N.)
| | - Audu Mumuni Momoh
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, University of Nigeria, Nsukka 410001, Enugu, Nigeria;
| | - Charles Odilichukwu R. Okpala
- Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, 51-630 Wrocław, Poland
| | - Chioma Assumpta Anosike
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Enugu, Nigeria; (A.C.M.); (B.E.A.); (M.O.O.); (C.A.A.); (O.U.N.)
| | - Obioma Uzoma Njoku
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka 410001, Enugu, Nigeria; (A.C.M.); (B.E.A.); (M.O.O.); (C.A.A.); (O.U.N.)
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Liposomes: Advancements and innovation in the manufacturing process. Adv Drug Deliv Rev 2020; 154-155:102-122. [PMID: 32650041 DOI: 10.1016/j.addr.2020.07.002] [Citation(s) in RCA: 213] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 06/13/2020] [Accepted: 07/02/2020] [Indexed: 12/18/2022]
Abstract
Liposomes are well recognised as effective drug delivery systems, with a range of products approved, including follow on generic products. Current manufacturing processes used to produce liposomes are generally complex multi-batch processes. Furthermore, liposome preparation processes adopted in the laboratory setting do not offer easy translation to large scale production, which may delay the development and adoption of new liposomal systems. To promote advancement and innovation in liposome manufacturing processes, this review considers the range of manufacturing processes available for liposomes, from laboratory scale and scale up, through to large-scale manufacture and evaluates their advantages and limitations. The regulatory considerations associated with the manufacture of liposomes is also discussed. New innovations that support leaner scalable technologies for liposome fabrication are outlined including self-assembling liposome systems and microfluidic production. The critical process attributes that impact on the liposome product attributes are outlined to support potential wider adoption of these innovations.
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