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Lian S, Lamprou D, Zhao M. Electrospinning technologies for the delivery of Biopharmaceuticals: Current status and future trends. Int J Pharm 2024; 651:123641. [PMID: 38029864 DOI: 10.1016/j.ijpharm.2023.123641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/15/2023] [Accepted: 11/26/2023] [Indexed: 12/01/2023]
Abstract
This review provides an in-depth exploration of electrospinning techniques employed to produce micro- or nanofibres of biopharmaceuticals using polymeric solutions or melts with high-voltage electricity. Distinct from prior reviews, the current work narrows its focus on the recent developments and advanced applications in biopharmaceutical formulations. It begins with an overview of electrospinning principles, covering both solution and melt modes. Various methods for incorporating biopharmaceuticals into electrospun fibres, such as surface adsorption, blending, emulsion, co-axial, and high-throughput electrospinning, are elaborated. The review also surveys a wide array of biopharmaceuticals formulated through electrospinning, thereby identifying both opportunities and challenges in this emerging field. Moreover, it outlines the analytical techniques for characterizing electrospun fibres and discusses the legal and regulatory requirements for their production. This work aims to offer valuable insights into the evolving realm of electrospun biopharmaceutical delivery systems.
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Affiliation(s)
- Shangjie Lian
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK
| | | | - Min Zhao
- School of Pharmacy, Queen's University Belfast, Belfast BT9 7BL, UK; China Medical University- Queen's University Belfast Joint College (CQC), China Medical University, Shenyang 110000, China
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Baltas C, Mylonas T, Lamprou D, Koskiniotis AE, Arnaoutoglou C. Dorsal Dislocation of Intermediate Cuneiform With Multiple Cuneiform and Cuboid Fractures Combined With Lisfranc Injury: A Case Report. Cureus 2023; 15:e50689. [PMID: 38229780 PMCID: PMC10791154 DOI: 10.7759/cureus.50689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2023] [Indexed: 01/18/2024] Open
Abstract
Multiple cuneiform fractures combined with isolated intermediate cuneiform dorsal dislocation and cuboid fracture, with disruption of the Lisfranc ligament, are rare injuries. In this study, we present a polytrauma patient who sustained these injuries, his treatment course, and the follow-up period. The patient was operated on the day of the injury and six months after that the results are very satisfactory.
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Affiliation(s)
- Christos Baltas
- Department of Orthopaedics and Traumatology, General University Hospital of Larissa, Larissa, GRC
| | - Theodoros Mylonas
- Department of Orthopaedics and Traumatology, General University Hospital Of Larissa, Larissa, GRC
| | - Dimitrios Lamprou
- Department of Orthopaedics and Traumatology, General University Hospital of Larissa, Larissa, GRC
| | - Alexandros E Koskiniotis
- Department of Orthopaedics and Traumatology, General University Hospital of Larissa, Larissa, GRC
| | - Christina Arnaoutoglou
- Department of Orthopaedics and Traumatology, General University Hospital of Larissa, Larissa, GRC
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Ghodke J, Ekonomou SI, Weaver E, Lamprou D, Doran O, Stratakos AC. The Manufacturing and Characterisation of Eugenol-Enclosed Liposomes Produced by Microfluidic Method. Foods 2023; 12:2940. [PMID: 37569209 PMCID: PMC10418319 DOI: 10.3390/foods12152940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
In this study, liposomes enclosing eugenol were prepared using microfluidics. Two lipids-1,2-dimyristoyl-sn-glycero-3-phosphocholine, 18:0 (DSPC) and 2-dimyristoyl-sn-glycero-3-phosphocholine, 14:0 (DMPC)-and microfluidic chips with serpentine and Y-shaped micromixing designs were used for the liposomal formulation. Minimum bactericidal concentration (MBC) values indicated that eugenol was more effective against Gram-negative than Gram-positive bacteria. Four different flow-rate ratios (FRR 2:1, 3:1, 4:1, 5:1) were explored. All liposomes' encapsulation efficiency (EE) was determined: 94.34% for DSPC 3:1 and 78.63% for DMPC 5:1. The highest eugenol release of 99.86% was observed at pH 4, DMPC 3:1 (Y-shaped chip). Liposomes were physically stable at 4, 20 and 37 °C for 60 days as determined by their size, polydispersity index (PDI) and zeta potential (ZP). The most stable liposomes were observed at FRR 5:1 for DSPC. EE, stability, and eugenol release studies proved that the liposomal formulations produced can be used as delivery vehicles to increase food safety.
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Affiliation(s)
- Jessica Ghodke
- College of Health, Science and Society, University of the West of England, Coldharbour Ln, Bristol BS16 1QY, UK; (J.G.); (S.I.E.); (O.D.)
| | - Sotirios I. Ekonomou
- College of Health, Science and Society, University of the West of England, Coldharbour Ln, Bristol BS16 1QY, UK; (J.G.); (S.I.E.); (O.D.)
| | - Edward Weaver
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (E.W.); (D.L.)
| | - Dimitrios Lamprou
- School of Pharmacy, Queen’s University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; (E.W.); (D.L.)
| | - Olena Doran
- College of Health, Science and Society, University of the West of England, Coldharbour Ln, Bristol BS16 1QY, UK; (J.G.); (S.I.E.); (O.D.)
| | - Alexandros Ch. Stratakos
- College of Health, Science and Society, University of the West of England, Coldharbour Ln, Bristol BS16 1QY, UK; (J.G.); (S.I.E.); (O.D.)
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Lamprou D, Ryan KB. Drug formulation and delivery: a UK and Ireland perspective. Drug Deliv Transl Res 2023:10.1007/s13346-023-01358-z. [PMID: 37129849 DOI: 10.1007/s13346-023-01358-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- Dimitrios Lamprou
- School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Katie B Ryan
- School of Pharmacy, University College Cork, Cork, Ireland.
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Grenier‐Pleau I, Tyryshkin K, Le TD, Rudan J, Bonneil E, Thibault P, Zeng K, Lässer C, Mallinson D, Lamprou D, Hui J, Postovit L, Chan EYW, Abraham SA. Blood extracellular vesicles from healthy individuals regulate hematopoietic stem cells as humans age. Aging Cell 2020; 19:e13245. [PMID: 33029858 PMCID: PMC7681054 DOI: 10.1111/acel.13245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 08/08/2020] [Accepted: 08/30/2020] [Indexed: 12/11/2022] Open
Abstract
Hematopoietic stem cells (HSCs) maintain balanced blood cell production in a process called hematopoiesis. As humans age, their HSCs acquire mutations that allow some HSCs to disproportionately contribute to normal blood production. This process, known as age‐related clonal hematopoiesis, predisposes certain individuals to cancer, cardiovascular and pulmonary pathologies. There is a growing body of evidence suggesting that factors outside cells, such as extracellular vesicles (EVs), contribute to the disruption of stem cell homeostasis during aging. We have characterized blood EVs from humans and determined that they are remarkably consistent with respect to size, concentration, and total protein content, across healthy subjects aged 20–85 years. When analyzing EV protein composition from mass spectroscopy data, our machine‐learning‐based algorithms are able to distinguish EV proteins based on age and suggest that different cell types dominantly produce EVs released into the blood, which change over time. Importantly, our data show blood EVs from middle and older age groups (>40 years) significantly stimulate HSCs in contrast to untreated and EVs sourced from young subjects. Our study establishes for the first time that although EV particle size, concentration, and total protein content remain relatively consistent over an adult lifespan in humans, EV content evolves during aging and potentially influences HSC regulation.
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Affiliation(s)
| | - Kathrin Tyryshkin
- Department of Pathology and Molecular Medicine Queen's University Kingston ON Canada
| | - Tri Dung Le
- Department of Biomedical and Molecular Sciences Queen's University Kingston ON Canada
| | - John Rudan
- Department of Surgery Kingston Health Sciences Centre Queen's University Kingston ON Canada
| | - Eric Bonneil
- Proteomics and Bioanalytical Mass Spectrometry Research Unit Institute for Research in Immunology and Cancer of the Université de Montréal Montréal QC Canada
| | - Pierre Thibault
- Proteomics and Bioanalytical Mass Spectrometry Research Unit Institute for Research in Immunology and Cancer of the Université de Montréal Montréal QC Canada
| | - Karen Zeng
- Department of Biomedical and Molecular Sciences Queen's University Kingston ON Canada
| | - Cecilia Lässer
- Krefting Research Centre Institute of Medicine at Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
| | - David Mallinson
- Strathclyde Institute of Pharmacy and Biomedical Sciences University of Strathclyde Glasgow UK
| | | | - Jialui Hui
- Department of Oncology University of Alberta Edmonton AB Canada
| | - Lynne‐Marie Postovit
- Department of Biomedical and Molecular Sciences Queen's University Kingston ON Canada
- Department of Oncology University of Alberta Edmonton AB Canada
| | - Edmond Y. W. Chan
- Department of Biomedical and Molecular Sciences Queen's University Kingston ON Canada
| | - Sheela A. Abraham
- Department of Biomedical and Molecular Sciences Queen's University Kingston ON Canada
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Akanda MH, Rai R, Slipper IJ, Chowdhry BZ, Lamprou D, Getti G, Douroumis D. Delivery of retinoic acid to LNCap human prostate cancer cells using solid lipid nanoparticles. Int J Pharm 2015. [DOI: 10.1016/j.ijpharm.2015.07.042] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Kemp O, Grant H, Lamprou D. Atomic force microscopy (AFM) analysis of nanocarrier–cell interaction. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Pottinger SJ, Lamprou D, Knoll AK, Lappas VJ. Impact of plasma noise on a direct thrust measurement system. Rev Sci Instrum 2012; 83:033504. [PMID: 22462919 DOI: 10.1063/1.3692740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In order to evaluate the accuracy and sensitivity of a pendulum-type thrust measurement system, a linear variable differential transformer (LVDT) and a laser optical displacement sensor have been used simultaneously to determine the displacement resulting from an applied thrust. The LVDT sensor uses an analog interface, whereas the laser sensor uses a digital interface to communicate the displacement readings to the data acquisition equipment. The data collected by both sensors show good agreement for static mass calibrations and validation with a cold gas thruster. However, the data obtained using the LVDT deviate significantly from that of the laser sensor when operating two varieties of plasma thrusters: a radio frequency (RF) driven plasma thruster, and a DC powered plasma thruster. Results establish that even with appropriate shielding and signal filtering the LVDT sensor is subject to plasma noise and radio frequency interactions which result in anomalous thrust readings. Experimental data show that the thrust determined using the LVDT system in a direct current plasma environment and a RF discharge is approximately a factor of three higher than the thrust values obtained using a laser sensor system for the operating conditions investigated. These findings are of significance to the electric propulsion community as LVDT sensors are often utilized in thrust measurement systems and accurate thrust measurement and the reproducibility of thrust data is key to analyzing thruster performance. Methods are proposed to evaluate system susceptibility to plasma noise and an effective filtering scheme presented for DC discharges.
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Affiliation(s)
- S J Pottinger
- Surrey Space Centre, University of Surrey, Guildford GU2 7XH, United Kingdom
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Lekakou C, Lamprou D, Vidyarthi U, Karopoulou E, Zhdan P. Structural hierarchy of biomimetic materials for tissue engineered vascular and orthopedic grafts. J Biomed Mater Res B Appl Biomater 2008; 85:461-8. [DOI: 10.1002/jbm.b.30966] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lamprou D, Tzamouranis A, Anagnou-Vareltzidou A, Manti F, Diamanti-Kipioti A. [Periodontal diseases in children]. Odontostomatol Proodos 1981; 35:59-61. [PMID: 6791070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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